Copyright | Will Thompson and Iñaki García Etxebarria |
---|---|
License | LGPL-2.1 |
Maintainer | Iñaki García Etxebarria |
Safe Haskell | Safe-Inferred |
Language | Haskell2010 |
- Exported types
- Methods
- actionSetEnabled
- activate
- activateAction
- activateDefault
- addController
- addCssClass
- addMnemonicLabel
- addTickCallback
- allocate
- childFocus
- computeBounds
- computeExpand
- computePoint
- computeTransform
- contains
- createPangoContext
- createPangoLayout
- dragCheckThreshold
- errorBell
- getAllocatedBaseline
- getAllocatedHeight
- getAllocatedWidth
- getAllocation
- getAncestor
- getCanFocus
- getCanTarget
- getChildVisible
- getClipboard
- getCssClasses
- getCssName
- getCursor
- getDefaultDirection
- getDirection
- getDisplay
- getFirstChild
- getFocusChild
- getFocusOnClick
- getFocusable
- getFontMap
- getFontOptions
- getFrameClock
- getHalign
- getHasTooltip
- getHeight
- getHexpand
- getHexpandSet
- getLastChild
- getLayoutManager
- getMapped
- getMarginBottom
- getMarginEnd
- getMarginStart
- getMarginTop
- getName
- getNative
- getNextSibling
- getOpacity
- getOverflow
- getPangoContext
- getParent
- getPreferredSize
- getPrevSibling
- getPrimaryClipboard
- getRealized
- getReceivesDefault
- getRequestMode
- getRoot
- getScaleFactor
- getSensitive
- getSettings
- getSize
- getSizeRequest
- getStateFlags
- getStyleContext
- getTemplateChild
- getTooltipMarkup
- getTooltipText
- getValign
- getVexpand
- getVexpandSet
- getVisible
- getWidth
- grabFocus
- hasCssClass
- hasDefault
- hasFocus
- hasVisibleFocus
- hide
- inDestruction
- initTemplate
- insertActionGroup
- insertAfter
- insertBefore
- isAncestor
- isDrawable
- isFocus
- isSensitive
- isVisible
- keynavFailed
- listMnemonicLabels
- map
- measure
- mnemonicActivate
- observeChildren
- observeControllers
- pick
- queueAllocate
- queueDraw
- queueResize
- realize
- removeController
- removeCssClass
- removeMnemonicLabel
- removeTickCallback
- setCanFocus
- setCanTarget
- setChildVisible
- setCssClasses
- setCursor
- setCursorFromName
- setDefaultDirection
- setDirection
- setFocusChild
- setFocusOnClick
- setFocusable
- setFontMap
- setFontOptions
- setHalign
- setHasTooltip
- setHexpand
- setHexpandSet
- setLayoutManager
- setMarginBottom
- setMarginEnd
- setMarginStart
- setMarginTop
- setName
- setOpacity
- setOverflow
- setParent
- setReceivesDefault
- setSensitive
- setSizeRequest
- setStateFlags
- setTooltipMarkup
- setTooltipText
- setValign
- setVexpand
- setVexpandSet
- setVisible
- shouldLayout
- show
- sizeAllocate
- snapshotChild
- translateCoordinates
- triggerTooltipQuery
- unmap
- unparent
- unrealize
- unsetStateFlags
- Properties
- canFocus
- canTarget
- cssClasses
- cssName
- cursor
- focusOnClick
- focusable
- halign
- hasDefault
- hasFocus
- hasTooltip
- heightRequest
- hexpand
- hexpandSet
- layoutManager
- marginBottom
- marginEnd
- marginStart
- marginTop
- name
- opacity
- overflow
- parent
- receivesDefault
- root
- scaleFactor
- sensitive
- tooltipMarkup
- tooltipText
- valign
- vexpand
- vexpandSet
- visible
- widthRequest
- Signals
The base class for all widgets.
GtkWidget
is the base class all widgets in GTK derive from. It manages the
widget lifecycle, layout, states and style.
Height-for-width Geometry Management
GTK uses a height-for-width (and width-for-height) geometry management system. Height-for-width means that a widget can change how much vertical space it needs, depending on the amount of horizontal space that it is given (and similar for width-for-height). The most common example is a label that reflows to fill up the available width, wraps to fewer lines, and therefore needs less height.
Height-for-width geometry management is implemented in GTK by way of two virtual methods:
There are some important things to keep in mind when implementing height-for-width and when using it in widget implementations.
If you implement a direct GtkWidget
subclass that supports
height-for-width or width-for-height geometry management for itself
or its child widgets, the Widget
.get_request_mode
() virtual
function must be implemented as well and return the widget's preferred
request mode. The default implementation of this virtual function
returns SizeRequestModeConstantSize
, which means that the widget will
only ever get -1 passed as the for_size value to its
Widget
.measure
() implementation.
The geometry management system will query a widget hierarchy in
only one orientation at a time. When widgets are initially queried
for their minimum sizes it is generally done in two initial passes
in the SizeRequestMode
chosen by the toplevel.
For example, when queried in the normal SizeRequestModeHeightForWidth
mode:
First, the default minimum and natural width for each widget
in the interface will be computed using widgetMeasure
with an
orientation of OrientationHorizontal
and a for_size of -1.
Because the preferred widths for each widget depend on the preferred
widths of their children, this information propagates up the hierarchy,
and finally a minimum and natural width is determined for the entire
toplevel. Next, the toplevel will use the minimum width to query for the
minimum height contextual to that width using widgetMeasure
with an
orientation of OrientationVertical
and a for_size of the just computed
width. This will also be a highly recursive operation. The minimum height
for the minimum width is normally used to set the minimum size constraint
on the toplevel.
After the toplevel window has initially requested its size in both
dimensions it can go on to allocate itself a reasonable size (or a size
previously specified with windowSetDefaultSize
). During the
recursive allocation process it’s important to note that request cycles
will be recursively executed while widgets allocate their children.
Each widget, once allocated a size, will go on to first share the
space in one orientation among its children and then request each child's
height for its target allocated width or its width for allocated height,
depending. In this way a GtkWidget
will typically be requested its size
a number of times before actually being allocated a size. The size a
widget is finally allocated can of course differ from the size it has
requested. For this reason, GtkWidget
caches a small number of results
to avoid re-querying for the same sizes in one allocation cycle.
If a widget does move content around to intelligently use up the
allocated size then it must support the request in both
GtkSizeRequestMode
s even if the widget in question only
trades sizes in a single orientation.
For instance, a Label
that does height-for-width word wrapping
will not expect to have Widget
.measure
() with an orientation of
OrientationVertical
called because that call is specific to a
width-for-height request. In this case the label must return the height
required for its own minimum possible width. By following this rule any
widget that handles height-for-width or width-for-height requests will
always be allocated at least enough space to fit its own content.
Here are some examples of how a SizeRequestModeHeightForWidth
widget
generally deals with width-for-height requests:
c code
static void foo_widget_measure (GtkWidget *widget, GtkOrientation orientation, int for_size, int *minimum_size, int *natural_size, int *minimum_baseline, int *natural_baseline) { if (orientation == GTK_ORIENTATION_HORIZONTAL) { // Calculate minimum and natural width } else // VERTICAL { if (i_am_in_height_for_width_mode) { int min_width, dummy; // First, get the minimum width of our widget GTK_WIDGET_GET_CLASS (widget)->measure (widget, GTK_ORIENTATION_HORIZONTAL, -1, &min_width, &dummy, &dummy, &dummy); // Now use the minimum width to retrieve the minimum and natural height to display // that width. GTK_WIDGET_GET_CLASS (widget)->measure (widget, GTK_ORIENTATION_VERTICAL, min_width, minimum_size, natural_size, &dummy, &dummy); } else { // ... some widgets do both. } } }
Often a widget needs to get its own request during size request or allocation. For example, when computing height it may need to also compute width. Or when deciding how to use an allocation, the widget may need to know its natural size. In these cases, the widget should be careful to call its virtual methods directly, like in the code example above.
It will not work to use the wrapper function widgetMeasure
inside your own Widget
.size_allocate
() implementation.
These return a request adjusted by SizeGroup
, the widget's
align and expand flags, as well as its CSS style.
If a widget used the wrappers inside its virtual method implementations, then the adjustments (such as widget margins) would be applied twice. GTK therefore does not allow this and will warn if you try to do it.
Of course if you are getting the size request for another widget, such
as a child widget, you must use widgetMeasure
; otherwise, you
would not properly consider widget margins, SizeGroup
, and
so forth.
GTK also supports baseline vertical alignment of widgets. This
means that widgets are positioned such that the typographical baseline of
widgets in the same row are aligned. This happens if a widget supports
baselines, has a vertical alignment of AlignBaseline
, and is inside
a widget that supports baselines and has a natural “row” that it aligns to
the baseline, or a baseline assigned to it by the grandparent.
Baseline alignment support for a widget is also done by the
Widget
.measure
() virtual function. It allows you to report
both a minimum and natural size.
If a widget ends up baseline aligned it will be allocated all the space in
the parent as if it was AlignFill
, but the selected baseline can be
found via widgetGetAllocatedBaseline
. If the baseline has a
value other than -1 you need to align the widget such that the baseline
appears at the position.
GtkWidget as GtkBuildable
The GtkWidget
implementation of the GtkBuildable
interface
supports various custom elements to specify additional aspects of widgets
that are not directly expressed as properties.
If the widget uses a LayoutManager
, GtkWidget
supports
a custom <layout>
element, used to define layout properties:
xml code
<object class="GtkGrid" id="my_grid"> <child> <object class="GtkLabel" id="label1"> <property name="label">Description</property> <layout> <property name="column">0</property> <property name="row">0</property> <property name="row-span">1</property> <property name="column-span">1</property> </layout> </object> </child> <child> <object class="GtkEntry" id="description_entry"> <layout> <property name="column">1</property> <property name="row">0</property> <property name="row-span">1</property> <property name="column-span">1</property> </layout> </object> </child> </object>
GtkWidget
allows style information such as style classes to
be associated with widgets, using the custom <style>
element:
xml code
<object class="GtkButton" id="button1"> <style> <class name="my-special-button-class"/> <class name="dark-button"/> </style> </object>
GtkWidget
allows defining accessibility information, such as properties,
relations, and states, using the custom <accessibility>
element:
xml code
<object class="GtkButton" id="button1"> <accessibility> <property name="label">Download</property> <relation name="labelled-by">label1</relation> </accessibility> </object>
Building composite widgets from template XML
GtkWidget
exposes some facilities to automate the procedure
of creating composite widgets using "templates".
To create composite widgets with GtkBuilder
XML, one must associate
the interface description with the widget class at class initialization
time using widgetClassSetTemplate
.
The interface description semantics expected in composite template descriptions
is slightly different from regular Builder
XML.
Unlike regular interface descriptions, widgetClassSetTemplate
will
expect a <template>
tag as a direct child of the toplevel <interface>
tag. The <template>
tag must specify the “class” attribute which must be
the type name of the widget. Optionally, the “parent” attribute may be
specified to specify the direct parent type of the widget type, this is
ignored by GtkBuilder
but required for UI design tools like
Glade to introspect what kind of properties and
internal children exist for a given type when the actual type does not exist.
The XML which is contained inside the <template>
tag behaves as if it were
added to the <object>
tag defining the widget itself. You may set properties
on a widget by inserting <property>
tags into the <template>
tag, and also
add <child>
tags to add children and extend a widget in the normal way you
would with <object>
tags.
Additionally, <object>
tags can also be added before and after the initial
<template>
tag in the normal way, allowing one to define auxiliary objects
which might be referenced by other widgets declared as children of the
<template>
tag.
An example of a template definition:
xml code
<interface> <template class="FooWidget" parent="GtkBox"> <property name="orientation">horizontal</property> <property name="spacing">4</property> <child> <object class="GtkButton" id="hello_button"> <property name="label">Hello World</property> <signal name="clicked" handler="hello_button_clicked" object="FooWidget" swapped="yes"/> </object> </child> <child> <object class="GtkButton" id="goodbye_button"> <property name="label">Goodbye World</property> </object> </child> </template> </interface>
Typically, you'll place the template fragment into a file that is
bundled with your project, using GResource
. In order to load the
template, you need to call widgetClassSetTemplateFromResource
from the class initialization of your GtkWidget
type:
c code
static void foo_widget_class_init (FooWidgetClass *klass) { // ... gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (klass), "/com/example/ui/foowidget.ui"); }
You will also need to call widgetInitTemplate
from the
instance initialization function:
c code
static void foo_widget_init (FooWidget *self) { // ... gtk_widget_init_template (GTK_WIDGET (self)); }
You can access widgets defined in the template using the
widgetGetTemplateChild
function, but you will typically declare
a pointer in the instance private data structure of your type using the same
name as the widget in the template definition, and call
widgetClassBindTemplateChildFull
(or one of its wrapper macros
Gtk.widget_class_bind_template_child
and Gtk.widget_class_bind_template_child_private
)
with that name, e.g.
c code
typedef struct { GtkWidget *hello_button; GtkWidget *goodbye_button; } FooWidgetPrivate; G_DEFINE_TYPE_WITH_PRIVATE (FooWidget, foo_widget, GTK_TYPE_BOX) static void foo_widget_class_init (FooWidgetClass *klass) { // ... gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (klass), "/com/example/ui/foowidget.ui"); gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (klass), FooWidget, hello_button); gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (klass), FooWidget, goodbye_button); } static void foo_widget_init (FooWidget *widget) { }
You can also use widgetClassBindTemplateCallbackFull
(or
is wrapper macro Gtk.widget_class_bind_template_callback
) to connect
a signal callback defined in the template with a function visible in the
scope of the class, e.g.
c code
// the signal handler has the instance and user data swapped // because of the swapped="yes" attribute in the template XML static void hello_button_clicked (FooWidget *self, GtkButton *button) { g_print ("Hello, world!\n"); } static void foo_widget_class_init (FooWidgetClass *klass) { // ... gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (klass), "/com/example/ui/foowidget.ui"); gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (klass), hello_button_clicked); }
Synopsis
- newtype Widget = Widget (ManagedPtr Widget)
- class (GObject o, IsDescendantOf Widget o) => IsWidget o
- toWidget :: (MonadIO m, IsWidget o) => o -> m Widget
- widgetActionSetEnabled :: (HasCallStack, MonadIO m, IsWidget a) => a -> Text -> Bool -> m ()
- widgetActivate :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetActivateAction :: (HasCallStack, MonadIO m, IsWidget a) => a -> Text -> Maybe GVariant -> m Bool
- widgetActivateDefault :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetAddController :: (HasCallStack, MonadIO m, IsWidget a, IsEventController b) => a -> b -> m ()
- widgetAddCssClass :: (HasCallStack, MonadIO m, IsWidget a) => a -> Text -> m ()
- widgetAddMnemonicLabel :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> b -> m ()
- widgetAddTickCallback :: (HasCallStack, MonadIO m, IsWidget a) => a -> TickCallback -> m Word32
- widgetAllocate :: (HasCallStack, MonadIO m, IsWidget a) => a -> Int32 -> Int32 -> Int32 -> Maybe Transform -> m ()
- widgetChildFocus :: (HasCallStack, MonadIO m, IsWidget a) => a -> DirectionType -> m Bool
- widgetComputeBounds :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> b -> m (Bool, Rect)
- widgetComputeExpand :: (HasCallStack, MonadIO m, IsWidget a) => a -> Orientation -> m Bool
- widgetComputePoint :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> b -> Point -> m (Bool, Point)
- widgetComputeTransform :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> b -> m (Bool, Matrix)
- widgetContains :: (HasCallStack, MonadIO m, IsWidget a) => a -> Double -> Double -> m Bool
- widgetCreatePangoContext :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Context
- widgetCreatePangoLayout :: (HasCallStack, MonadIO m, IsWidget a) => a -> Maybe Text -> m Layout
- widgetDragCheckThreshold :: (HasCallStack, MonadIO m, IsWidget a) => a -> Int32 -> Int32 -> Int32 -> Int32 -> m Bool
- widgetErrorBell :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetGetAllocatedBaseline :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetAllocatedHeight :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetAllocatedWidth :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetAllocation :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Rectangle
- widgetGetAncestor :: (HasCallStack, MonadIO m, IsWidget a) => a -> GType -> m (Maybe Widget)
- widgetGetCanFocus :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetCanTarget :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetChildVisible :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetClipboard :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Clipboard
- widgetGetCssClasses :: (HasCallStack, MonadIO m, IsWidget a) => a -> m [Text]
- widgetGetCssName :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Text
- widgetGetCursor :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Cursor)
- widgetGetDefaultDirection :: (HasCallStack, MonadIO m) => m TextDirection
- widgetGetDirection :: (HasCallStack, MonadIO m, IsWidget a) => a -> m TextDirection
- widgetGetDisplay :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Display
- widgetGetFirstChild :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Widget)
- widgetGetFocusChild :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Widget)
- widgetGetFocusOnClick :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetFocusable :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetFontMap :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe FontMap)
- widgetGetFontOptions :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe FontOptions)
- widgetGetFrameClock :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe FrameClock)
- widgetGetHalign :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Align
- widgetGetHasTooltip :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetHeight :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetHexpand :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetHexpandSet :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetLastChild :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Widget)
- widgetGetLayoutManager :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe LayoutManager)
- widgetGetMapped :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetMarginBottom :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetMarginEnd :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetMarginStart :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetMarginTop :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetName :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Text
- widgetGetNative :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Native)
- widgetGetNextSibling :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Widget)
- widgetGetOpacity :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Double
- widgetGetOverflow :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Overflow
- widgetGetPangoContext :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Context
- widgetGetParent :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Widget)
- widgetGetPreferredSize :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Requisition, Requisition)
- widgetGetPrevSibling :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Widget)
- widgetGetPrimaryClipboard :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Clipboard
- widgetGetRealized :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetReceivesDefault :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetRequestMode :: (HasCallStack, MonadIO m, IsWidget a) => a -> m SizeRequestMode
- widgetGetRoot :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Root)
- widgetGetScaleFactor :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGetSensitive :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetSettings :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Settings
- widgetGetSize :: (HasCallStack, MonadIO m, IsWidget a) => a -> Orientation -> m Int32
- widgetGetSizeRequest :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Int32, Int32)
- widgetGetStateFlags :: (HasCallStack, MonadIO m, IsWidget a) => a -> m [StateFlags]
- widgetGetStyleContext :: (HasCallStack, MonadIO m, IsWidget a) => a -> m StyleContext
- widgetGetTemplateChild :: (HasCallStack, MonadIO m, IsWidget a) => a -> GType -> Text -> m Object
- widgetGetTooltipMarkup :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Text)
- widgetGetTooltipText :: (HasCallStack, MonadIO m, IsWidget a) => a -> m (Maybe Text)
- widgetGetValign :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Align
- widgetGetVexpand :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetVexpandSet :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetVisible :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetGetWidth :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Int32
- widgetGrabFocus :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetHasCssClass :: (HasCallStack, MonadIO m, IsWidget a) => a -> Text -> m Bool
- widgetHasDefault :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetHasFocus :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetHasVisibleFocus :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetHide :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetInDestruction :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetInitTemplate :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetInsertActionGroup :: (HasCallStack, MonadIO m, IsWidget a, IsActionGroup b) => a -> Text -> Maybe b -> m ()
- widgetInsertAfter :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b, IsWidget c) => a -> b -> Maybe c -> m ()
- widgetInsertBefore :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b, IsWidget c) => a -> b -> Maybe c -> m ()
- widgetIsAncestor :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> b -> m Bool
- widgetIsDrawable :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetIsFocus :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetIsSensitive :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetIsVisible :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetKeynavFailed :: (HasCallStack, MonadIO m, IsWidget a) => a -> DirectionType -> m Bool
- widgetListMnemonicLabels :: (HasCallStack, MonadIO m, IsWidget a) => a -> m [Widget]
- widgetMap :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetMeasure :: (HasCallStack, MonadIO m, IsWidget a) => a -> Orientation -> Int32 -> m (Int32, Int32, Int32, Int32)
- widgetMnemonicActivate :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m Bool
- widgetObserveChildren :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ListModel
- widgetObserveControllers :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ListModel
- widgetPick :: (HasCallStack, MonadIO m, IsWidget a) => a -> Double -> Double -> [PickFlags] -> m (Maybe Widget)
- widgetQueueAllocate :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetQueueDraw :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetQueueResize :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetRealize :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetRemoveController :: (HasCallStack, MonadIO m, IsWidget a, IsEventController b) => a -> b -> m ()
- widgetRemoveCssClass :: (HasCallStack, MonadIO m, IsWidget a) => a -> Text -> m ()
- widgetRemoveMnemonicLabel :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> b -> m ()
- widgetRemoveTickCallback :: (HasCallStack, MonadIO m, IsWidget a) => a -> Word32 -> m ()
- widgetSetCanFocus :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetCanTarget :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetChildVisible :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetCssClasses :: (HasCallStack, MonadIO m, IsWidget a) => a -> [Text] -> m ()
- widgetSetCursor :: (HasCallStack, MonadIO m, IsWidget a, IsCursor b) => a -> Maybe b -> m ()
- widgetSetCursorFromName :: (HasCallStack, MonadIO m, IsWidget a) => a -> Maybe Text -> m ()
- widgetSetDefaultDirection :: (HasCallStack, MonadIO m) => TextDirection -> m ()
- widgetSetDirection :: (HasCallStack, MonadIO m, IsWidget a) => a -> TextDirection -> m ()
- widgetSetFocusChild :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> Maybe b -> m ()
- widgetSetFocusOnClick :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetFocusable :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetFontMap :: (HasCallStack, MonadIO m, IsWidget a, IsFontMap b) => a -> Maybe b -> m ()
- widgetSetFontOptions :: (HasCallStack, MonadIO m, IsWidget a) => a -> Maybe FontOptions -> m ()
- widgetSetHalign :: (HasCallStack, MonadIO m, IsWidget a) => a -> Align -> m ()
- widgetSetHasTooltip :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetHexpand :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetHexpandSet :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetLayoutManager :: (HasCallStack, MonadIO m, IsWidget a, IsLayoutManager b) => a -> Maybe b -> m ()
- widgetSetMarginBottom :: (HasCallStack, MonadIO m, IsWidget a) => a -> Int32 -> m ()
- widgetSetMarginEnd :: (HasCallStack, MonadIO m, IsWidget a) => a -> Int32 -> m ()
- widgetSetMarginStart :: (HasCallStack, MonadIO m, IsWidget a) => a -> Int32 -> m ()
- widgetSetMarginTop :: (HasCallStack, MonadIO m, IsWidget a) => a -> Int32 -> m ()
- widgetSetName :: (HasCallStack, MonadIO m, IsWidget a) => a -> Text -> m ()
- widgetSetOpacity :: (HasCallStack, MonadIO m, IsWidget a) => a -> Double -> m ()
- widgetSetOverflow :: (HasCallStack, MonadIO m, IsWidget a) => a -> Overflow -> m ()
- widgetSetParent :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> b -> m ()
- widgetSetReceivesDefault :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetSensitive :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetSizeRequest :: (HasCallStack, MonadIO m, IsWidget a) => a -> Int32 -> Int32 -> m ()
- widgetSetStateFlags :: (HasCallStack, MonadIO m, IsWidget a) => a -> [StateFlags] -> Bool -> m ()
- widgetSetTooltipMarkup :: (HasCallStack, MonadIO m, IsWidget a) => a -> Maybe Text -> m ()
- widgetSetTooltipText :: (HasCallStack, MonadIO m, IsWidget a) => a -> Maybe Text -> m ()
- widgetSetValign :: (HasCallStack, MonadIO m, IsWidget a) => a -> Align -> m ()
- widgetSetVexpand :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetVexpandSet :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetSetVisible :: (HasCallStack, MonadIO m, IsWidget a) => a -> Bool -> m ()
- widgetShouldLayout :: (HasCallStack, MonadIO m, IsWidget a) => a -> m Bool
- widgetShow :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetSizeAllocate :: (HasCallStack, MonadIO m, IsWidget a) => a -> Rectangle -> Int32 -> m ()
- widgetSnapshotChild :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b, IsSnapshot c) => a -> b -> c -> m ()
- widgetTranslateCoordinates :: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) => a -> b -> Double -> Double -> m (Bool, Double, Double)
- widgetTriggerTooltipQuery :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetUnmap :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetUnparent :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetUnrealize :: (HasCallStack, MonadIO m, IsWidget a) => a -> m ()
- widgetUnsetStateFlags :: (HasCallStack, MonadIO m, IsWidget a) => a -> [StateFlags] -> m ()
- constructWidgetCanFocus :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetCanFocus :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetCanFocus :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetCanTarget :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetCanTarget :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetCanTarget :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetCssClasses :: (IsWidget o, MonadIO m) => [Text] -> m (GValueConstruct o)
- getWidgetCssClasses :: (MonadIO m, IsWidget o) => o -> m (Maybe [Text])
- setWidgetCssClasses :: (MonadIO m, IsWidget o) => o -> [Text] -> m ()
- constructWidgetCssName :: (IsWidget o, MonadIO m) => Text -> m (GValueConstruct o)
- getWidgetCssName :: (MonadIO m, IsWidget o) => o -> m Text
- clearWidgetCursor :: (MonadIO m, IsWidget o) => o -> m ()
- constructWidgetCursor :: (IsWidget o, MonadIO m, IsCursor a) => a -> m (GValueConstruct o)
- getWidgetCursor :: (MonadIO m, IsWidget o) => o -> m (Maybe Cursor)
- setWidgetCursor :: (MonadIO m, IsWidget o, IsCursor a) => o -> a -> m ()
- constructWidgetFocusOnClick :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetFocusOnClick :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetFocusOnClick :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetFocusable :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetFocusable :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetFocusable :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetHalign :: (IsWidget o, MonadIO m) => Align -> m (GValueConstruct o)
- getWidgetHalign :: (MonadIO m, IsWidget o) => o -> m Align
- setWidgetHalign :: (MonadIO m, IsWidget o) => o -> Align -> m ()
- getWidgetHasDefault :: (MonadIO m, IsWidget o) => o -> m Bool
- getWidgetHasFocus :: (MonadIO m, IsWidget o) => o -> m Bool
- constructWidgetHasTooltip :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetHasTooltip :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetHasTooltip :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetHeightRequest :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o)
- getWidgetHeightRequest :: (MonadIO m, IsWidget o) => o -> m Int32
- setWidgetHeightRequest :: (MonadIO m, IsWidget o) => o -> Int32 -> m ()
- constructWidgetHexpand :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetHexpand :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetHexpand :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetHexpandSet :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetHexpandSet :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetHexpandSet :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- clearWidgetLayoutManager :: (MonadIO m, IsWidget o) => o -> m ()
- constructWidgetLayoutManager :: (IsWidget o, MonadIO m, IsLayoutManager a) => a -> m (GValueConstruct o)
- getWidgetLayoutManager :: (MonadIO m, IsWidget o) => o -> m (Maybe LayoutManager)
- setWidgetLayoutManager :: (MonadIO m, IsWidget o, IsLayoutManager a) => o -> a -> m ()
- constructWidgetMarginBottom :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o)
- getWidgetMarginBottom :: (MonadIO m, IsWidget o) => o -> m Int32
- setWidgetMarginBottom :: (MonadIO m, IsWidget o) => o -> Int32 -> m ()
- constructWidgetMarginEnd :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o)
- getWidgetMarginEnd :: (MonadIO m, IsWidget o) => o -> m Int32
- setWidgetMarginEnd :: (MonadIO m, IsWidget o) => o -> Int32 -> m ()
- constructWidgetMarginStart :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o)
- getWidgetMarginStart :: (MonadIO m, IsWidget o) => o -> m Int32
- setWidgetMarginStart :: (MonadIO m, IsWidget o) => o -> Int32 -> m ()
- constructWidgetMarginTop :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o)
- getWidgetMarginTop :: (MonadIO m, IsWidget o) => o -> m Int32
- setWidgetMarginTop :: (MonadIO m, IsWidget o) => o -> Int32 -> m ()
- constructWidgetName :: (IsWidget o, MonadIO m) => Text -> m (GValueConstruct o)
- getWidgetName :: (MonadIO m, IsWidget o) => o -> m Text
- setWidgetName :: (MonadIO m, IsWidget o) => o -> Text -> m ()
- constructWidgetOpacity :: (IsWidget o, MonadIO m) => Double -> m (GValueConstruct o)
- getWidgetOpacity :: (MonadIO m, IsWidget o) => o -> m Double
- setWidgetOpacity :: (MonadIO m, IsWidget o) => o -> Double -> m ()
- constructWidgetOverflow :: (IsWidget o, MonadIO m) => Overflow -> m (GValueConstruct o)
- getWidgetOverflow :: (MonadIO m, IsWidget o) => o -> m Overflow
- setWidgetOverflow :: (MonadIO m, IsWidget o) => o -> Overflow -> m ()
- getWidgetParent :: (MonadIO m, IsWidget o) => o -> m (Maybe Widget)
- constructWidgetReceivesDefault :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetReceivesDefault :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetReceivesDefault :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- getWidgetRoot :: (MonadIO m, IsWidget o) => o -> m (Maybe Root)
- getWidgetScaleFactor :: (MonadIO m, IsWidget o) => o -> m Int32
- constructWidgetSensitive :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetSensitive :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetSensitive :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- clearWidgetTooltipMarkup :: (MonadIO m, IsWidget o) => o -> m ()
- constructWidgetTooltipMarkup :: (IsWidget o, MonadIO m) => Text -> m (GValueConstruct o)
- getWidgetTooltipMarkup :: (MonadIO m, IsWidget o) => o -> m (Maybe Text)
- setWidgetTooltipMarkup :: (MonadIO m, IsWidget o) => o -> Text -> m ()
- clearWidgetTooltipText :: (MonadIO m, IsWidget o) => o -> m ()
- constructWidgetTooltipText :: (IsWidget o, MonadIO m) => Text -> m (GValueConstruct o)
- getWidgetTooltipText :: (MonadIO m, IsWidget o) => o -> m (Maybe Text)
- setWidgetTooltipText :: (MonadIO m, IsWidget o) => o -> Text -> m ()
- constructWidgetValign :: (IsWidget o, MonadIO m) => Align -> m (GValueConstruct o)
- getWidgetValign :: (MonadIO m, IsWidget o) => o -> m Align
- setWidgetValign :: (MonadIO m, IsWidget o) => o -> Align -> m ()
- constructWidgetVexpand :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetVexpand :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetVexpand :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetVexpandSet :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetVexpandSet :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetVexpandSet :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetVisible :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o)
- getWidgetVisible :: (MonadIO m, IsWidget o) => o -> m Bool
- setWidgetVisible :: (MonadIO m, IsWidget o) => o -> Bool -> m ()
- constructWidgetWidthRequest :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o)
- getWidgetWidthRequest :: (MonadIO m, IsWidget o) => o -> m Int32
- setWidgetWidthRequest :: (MonadIO m, IsWidget o) => o -> Int32 -> m ()
- type WidgetDestroyCallback = IO ()
- afterWidgetDestroy :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetDestroyCallback) -> m SignalHandlerId
- onWidgetDestroy :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetDestroyCallback) -> m SignalHandlerId
- type WidgetDirectionChangedCallback = TextDirection -> IO ()
- afterWidgetDirectionChanged :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetDirectionChangedCallback) -> m SignalHandlerId
- onWidgetDirectionChanged :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetDirectionChangedCallback) -> m SignalHandlerId
- type WidgetHideCallback = IO ()
- afterWidgetHide :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetHideCallback) -> m SignalHandlerId
- onWidgetHide :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetHideCallback) -> m SignalHandlerId
- type WidgetKeynavFailedCallback = DirectionType -> IO Bool
- afterWidgetKeynavFailed :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetKeynavFailedCallback) -> m SignalHandlerId
- onWidgetKeynavFailed :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetKeynavFailedCallback) -> m SignalHandlerId
- type WidgetMapCallback = IO ()
- afterWidgetMap :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMapCallback) -> m SignalHandlerId
- onWidgetMap :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMapCallback) -> m SignalHandlerId
- type WidgetMnemonicActivateCallback = Bool -> IO Bool
- afterWidgetMnemonicActivate :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMnemonicActivateCallback) -> m SignalHandlerId
- onWidgetMnemonicActivate :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMnemonicActivateCallback) -> m SignalHandlerId
- type WidgetMoveFocusCallback = DirectionType -> IO ()
- afterWidgetMoveFocus :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMoveFocusCallback) -> m SignalHandlerId
- onWidgetMoveFocus :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMoveFocusCallback) -> m SignalHandlerId
- type WidgetQueryTooltipCallback = Int32 -> Int32 -> Bool -> Tooltip -> IO Bool
- afterWidgetQueryTooltip :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetQueryTooltipCallback) -> m SignalHandlerId
- onWidgetQueryTooltip :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetQueryTooltipCallback) -> m SignalHandlerId
- type WidgetRealizeCallback = IO ()
- afterWidgetRealize :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetRealizeCallback) -> m SignalHandlerId
- onWidgetRealize :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetRealizeCallback) -> m SignalHandlerId
- type WidgetShowCallback = IO ()
- afterWidgetShow :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetShowCallback) -> m SignalHandlerId
- onWidgetShow :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetShowCallback) -> m SignalHandlerId
- type WidgetStateFlagsChangedCallback = [StateFlags] -> IO ()
- afterWidgetStateFlagsChanged :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetStateFlagsChangedCallback) -> m SignalHandlerId
- onWidgetStateFlagsChanged :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetStateFlagsChangedCallback) -> m SignalHandlerId
- type WidgetUnmapCallback = IO ()
- afterWidgetUnmap :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetUnmapCallback) -> m SignalHandlerId
- onWidgetUnmap :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetUnmapCallback) -> m SignalHandlerId
- type WidgetUnrealizeCallback = IO ()
- afterWidgetUnrealize :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetUnrealizeCallback) -> m SignalHandlerId
- onWidgetUnrealize :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetUnrealizeCallback) -> m SignalHandlerId
Exported types
Memory-managed wrapper type.
Instances
Eq Widget Source # | |
GObject Widget Source # | |
Defined in GI.Gtk.Objects.Widget | |
ManagedPtrNewtype Widget Source # | |
Defined in GI.Gtk.Objects.Widget toManagedPtr :: Widget -> ManagedPtr Widget # | |
TypedObject Widget Source # | |
Defined in GI.Gtk.Objects.Widget | |
HasParentTypes Widget Source # | |
Defined in GI.Gtk.Objects.Widget | |
IsGValue (Maybe Widget) Source # | Convert |
Defined in GI.Gtk.Objects.Widget | |
type ParentTypes Widget Source # | |
Defined in GI.Gtk.Objects.Widget |
class (GObject o, IsDescendantOf Widget o) => IsWidget o Source #
Instances
(GObject o, IsDescendantOf Widget o) => IsWidget o Source # | |
Defined in GI.Gtk.Objects.Widget |
Methods
Click to display all available methods, including inherited ones
Methods
actionSetEnabled, activate, activateAction, activateDefault, addController, addCssClass, addMnemonicLabel, addTickCallback, allocate, bindProperty, bindPropertyFull, childFocus, computeBounds, computeExpand, computePoint, computeTransform, contains, createPangoContext, createPangoLayout, dragCheckThreshold, errorBell, forceFloating, freezeNotify, getv, grabFocus, hasCssClass, hasDefault, hasFocus, hasVisibleFocus, hide, inDestruction, initTemplate, insertActionGroup, insertAfter, insertBefore, isAncestor, isDrawable, isFloating, isFocus, isSensitive, isVisible, keynavFailed, listMnemonicLabels, map, measure, mnemonicActivate, notify, notifyByPspec, observeChildren, observeControllers, pick, queueAllocate, queueDraw, queueResize, realize, ref, refSink, removeController, removeCssClass, removeMnemonicLabel, removeTickCallback, resetProperty, resetRelation, resetState, runDispose, shouldLayout, show, sizeAllocate, snapshotChild, stealData, stealQdata, thawNotify, translateCoordinates, triggerTooltipQuery, unmap, unparent, unrealize, unref, unsetStateFlags, updateProperty, updateRelation, updateState, watchClosure.
Getters
getAccessibleRole, getAllocatedBaseline, getAllocatedHeight, getAllocatedWidth, getAllocation, getAncestor, getBuildableId, getCanFocus, getCanTarget, getChildVisible, getClipboard, getCssClasses, getCssName, getCursor, getData, getDirection, getDisplay, getFirstChild, getFocusChild, getFocusOnClick, getFocusable, getFontMap, getFontOptions, getFrameClock, getHalign, getHasTooltip, getHeight, getHexpand, getHexpandSet, getLastChild, getLayoutManager, getMapped, getMarginBottom, getMarginEnd, getMarginStart, getMarginTop, getName, getNative, getNextSibling, getOpacity, getOverflow, getPangoContext, getParent, getPreferredSize, getPrevSibling, getPrimaryClipboard, getProperty, getQdata, getRealized, getReceivesDefault, getRequestMode, getRoot, getScaleFactor, getSensitive, getSettings, getSize, getSizeRequest, getStateFlags, getStyleContext, getTemplateChild, getTooltipMarkup, getTooltipText, getValign, getVexpand, getVexpandSet, getVisible, getWidth.
Setters
setCanFocus, setCanTarget, setChildVisible, setCssClasses, setCursor, setCursorFromName, setData, setDataFull, setDirection, setFocusChild, setFocusOnClick, setFocusable, setFontMap, setFontOptions, setHalign, setHasTooltip, setHexpand, setHexpandSet, setLayoutManager, setMarginBottom, setMarginEnd, setMarginStart, setMarginTop, setName, setOpacity, setOverflow, setParent, setProperty, setReceivesDefault, setSensitive, setSizeRequest, setStateFlags, setTooltipMarkup, setTooltipText, setValign, setVexpand, setVexpandSet, setVisible.
actionSetEnabled
widgetActionSetEnabled Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Text |
|
-> Bool |
|
-> m () |
Enable or disable an action installed with
widgetClassInstallAction
.
activate
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
For widgets that can be “activated” (buttons, menu items, etc.), this function activates them.
The activation will emit the signal set using
widgetClassSetActivateSignal
during class initialization.
Activation is what happens when you press <kbd>Enter</kbd> on a widget during key navigation.
If you wish to handle the activation keybinding yourself, it is
recommended to use widgetClassAddShortcut
with an action
created with signalActionNew
.
If widget
isn't activatable, the function returns False
.
activateAction
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Text |
|
-> Maybe GVariant |
|
-> m Bool | Returns: |
Looks up the action in the action groups associated with
widget
and its ancestors, and activates it.
If the action is in an action group added with
widgetInsertActionGroup
, the name
is expected
to be prefixed with the prefix that was used when the group was
inserted.
The arguments must match the actions expected parameter type,
as returned by g_action_get_parameter_type()
.
activateDefault
widgetActivateDefault Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Activates the default.activate
action from widget
.
addController
:: (HasCallStack, MonadIO m, IsWidget a, IsEventController b) | |
=> a |
|
-> b |
|
-> m () |
Adds controller
to widget
so that it will receive events.
You will usually want to call this function right after
creating any kind of EventController
.
addCssClass
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Text |
|
-> m () |
Adds a style class to widget
.
After calling this function, the widgets style will match
for cssClass
, according to CSS matching rules.
Use widgetRemoveCssClass
to remove the
style again.
addMnemonicLabel
widgetAddMnemonicLabel Source #
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> b |
|
-> m () |
Adds a widget to the list of mnemonic labels for this widget.
See widgetListMnemonicLabels
. Note the
list of mnemonic labels for the widget is cleared when the
widget is destroyed, so the caller must make sure to update
its internal state at this point as well.
addTickCallback
widgetAddTickCallback Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> TickCallback |
|
-> m Word32 | Returns: an id for the connection of this callback. Remove the callback
by passing the id returned from this function to
|
Queues an animation frame update and adds a callback to be called before each frame.
Until the tick callback is removed, it will be called frequently
(usually at the frame rate of the output device or as quickly as
the application can be repainted, whichever is slower). For this
reason, is most suitable for handling graphics that change every
frame or every few frames. The tick callback does not automatically
imply a relayout or repaint. If you want a repaint or relayout, and
aren’t changing widget properties that would trigger that (for example,
changing the text of a GtkLabel
), then you will have to call
widgetQueueResize
or widgetQueueDraw
yourself.
frameClockGetFrameTime
should generally be used
for timing continuous animations and
frameTimingsGetPredictedPresentationTime
if you are
trying to display isolated frames at particular times.
This is a more convenient alternative to connecting directly to the
FrameClock::update signal of GdkFrameClock
, since you
don't have to worry about when a GdkFrameClock
is assigned to a widget.
allocate
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Int32 |
|
-> Int32 |
|
-> Int32 |
|
-> Maybe Transform |
|
-> m () |
This function is only used by GtkWidget
subclasses, to
assign a size, position and (optionally) baseline to their
child widgets.
In this function, the allocation and baseline may be adjusted. The given allocation will be forced to be bigger than the widget's minimum size, as well as at least 0×0 in size.
For a version that does not take a transform, see
widgetSizeAllocate
.
childFocus
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> DirectionType |
|
-> m Bool | Returns: |
Called by widgets as the user moves around the window using keyboard shortcuts.
The direction
argument indicates what kind of motion is taking place (up,
down, left, right, tab forward, tab backward).
This function calls the Widget
.focus
() virtual function; widgets
can override the virtual function in order to implement appropriate focus
behavior.
The default focus()
virtual function for a widget should return TRUE
if
moving in direction
left the focus on a focusable location inside that
widget, and FALSE
if moving in direction
moved the focus outside the
widget. When returning TRUE
, widgets normallycall widgetGrabFocus
to place the focus accordingly; when returning FALSE
, they don’t modify
the current focus location.
This function is used by custom widget implementations; if you're
writing an app, you’d use widgetGrabFocus
to move
the focus to a particular widget.
computeBounds
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> b |
|
-> m (Bool, Rect) | Returns: |
Computes the bounds for widget
in the coordinate space of target
.
FIXME: Explain what "bounds" are.
If the operation is successful, True
is returned. If widget
has no
bounds or the bounds cannot be expressed in target
's coordinate space
(for example if both widgets are in different windows), False
is
returned and bounds
is set to the zero rectangle.
It is valid for widget
and target
to be the same widget.
computeExpand
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Orientation |
|
-> m Bool | Returns: whether widget tree rooted here should be expanded |
Computes whether a container should give this widget extra space when possible.
Containers should check this, rather than looking at
widgetGetHexpand
or widgetGetVexpand
.
This function already checks whether the widget is visible, so visibility does not need to be checked separately. Non-visible widgets are not expanded.
The computed expand value uses either the expand setting explicitly set on the widget itself, or, if none has been explicitly set, the widget may expand if some of its children do.
computePoint
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> b |
|
-> Point |
|
-> m (Bool, Point) | Returns: |
Translates the given point
in widget
's coordinates to coordinates
relative to target
’s coordinate system.
In order to perform this operation, both widgets must share a common ancestor.
computeTransform
widgetComputeTransform Source #
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> b |
|
-> m (Bool, Matrix) | Returns: |
Computes a matrix suitable to describe a transformation from
widget
's coordinate system into target
's coordinate system.
The transform can not be computed in certain cases, for example
when widget
and target
do not share a common ancestor. In that
case outTransform
gets set to the identity matrix.
contains
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Double |
|
-> Double |
|
-> m Bool | Returns: |
Tests if the point at (x
, y
) is contained in widget
.
The coordinates for (x
, y
) must be in widget coordinates, so
(0, 0) is assumed to be the top left of widget
's content area.
createPangoContext
widgetCreatePangoContext Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Context | Returns: the new |
Creates a new PangoContext
with the appropriate font map,
font options, font description, and base direction for drawing
text for this widget.
See also widgetGetPangoContext
.
createPangoLayout
widgetCreatePangoLayout Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Maybe Text |
|
-> m Layout | Returns: the new |
Creates a new PangoLayout
with the appropriate font map,
font description, and base direction for drawing text for
this widget.
If you keep a PangoLayout
created in this way around,
you need to re-create it when the widget PangoContext
is replaced. This can be tracked by listening to changes
of the Widget:root property on the widget.
dragCheckThreshold
widgetDragCheckThreshold Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Int32 |
|
-> Int32 |
|
-> Int32 |
|
-> Int32 |
|
-> m Bool | Returns: |
Checks to see if a drag movement has passed the GTK drag threshold.
errorBell
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Notifies the user about an input-related error on this widget.
If the Settings:gtkErrorBell setting is True
,
it calls surfaceBeep
, otherwise it does nothing.
Note that the effect of surfaceBeep
can be configured
in many ways, depending on the windowing backend and the desktop
environment or window manager that is used.
getAllocatedBaseline
widgetGetAllocatedBaseline Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: the baseline of the |
Returns the baseline that has currently been allocated to widget
.
This function is intended to be used when implementing handlers
for the GtkWidget
Class.snapshot()
function, and when allocating
child widgets in GtkWidget
Class.size_allocate()
.
getAllocatedHeight
widgetGetAllocatedHeight Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: the height of the |
Returns the height that has currently been allocated to widget
.
getAllocatedWidth
widgetGetAllocatedWidth Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: the width of the |
Returns the width that has currently been allocated to widget
.
getAllocation
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Rectangle |
Retrieves the widget’s allocation.
Note, when implementing a layout container: a widget’s allocation
will be its “adjusted” allocation, that is, the widget’s parent
typically calls widgetSizeAllocate
with an allocation,
and that allocation is then adjusted (to handle margin
and alignment for example) before assignment to the widget.
widgetGetAllocation
returns the adjusted allocation that
was actually assigned to the widget. The adjusted allocation is
guaranteed to be completely contained within the
widgetSizeAllocate
allocation, however.
So a layout container is guaranteed that its children stay inside the assigned bounds, but not that they have exactly the bounds the container assigned.
getAncestor
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> GType |
|
-> m (Maybe Widget) | Returns: the ancestor widget |
Gets the first ancestor of widget
with type widgetType
.
For example, gtk_widget_get_ancestor (widget, GTK_TYPE_BOX)
gets the first GtkBox
that’s an ancestor of widget
. No
reference will be added to the returned widget; it should
not be unreferenced.
Note that unlike widgetIsAncestor
, this function
considers widget
to be an ancestor of itself.
getCanFocus
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines whether the input focus can enter widget
or any
of its children.
See widgetSetFocusable
.
getCanTarget
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Queries whether widget
can be the target of pointer events.
getChildVisible
widgetGetChildVisible Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Gets the value set with widgetSetChildVisible
.
If you feel a need to use this function, your code probably needs reorganization.
This function is only useful for container implementations and should never be called by an application.
getClipboard
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Clipboard | Returns: the appropriate clipboard object |
Gets the clipboard object for widget
.
This is a utility function to get the clipboard object for the
GdkDisplay
that widget
is using.
Note that this function always works, even when widget
is not
realized yet.
getCssClasses
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m [Text] | Returns: a |
Returns the list of style classes applied to widget
.
getCssName
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Text | Returns: the CSS name |
Returns the CSS name that is used for self
.
getCursor
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Cursor) | Returns: the cursor
currently in use or |
Queries the cursor set on widget
.
See widgetSetCursor
for details.
getDefaultDirection
widgetGetDefaultDirection Source #
:: (HasCallStack, MonadIO m) | |
=> m TextDirection | Returns: the current default direction. |
Obtains the current default reading direction.
See [funcgtk
.Widget.set_default_direction].
getDirection
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m TextDirection | Returns: the reading direction for the widget. |
Gets the reading direction for a particular widget.
See widgetSetDirection
.
getDisplay
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Display | Returns: the |
Get the GdkDisplay
for the toplevel window associated with
this widget.
This function can only be called after the widget has been
added to a widget hierarchy with a GtkWindow
at the top.
In general, you should only create display specific resources when a widget has been realized, and you should free those resources when the widget is unrealized.
getFirstChild
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Widget) | Returns: The widget's first child |
Returns the widgets first child.
This API is primarily meant for widget implementations.
getFocusChild
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Widget) | Returns: The current focus
child of |
Returns the current focus child of widget
.
getFocusOnClick
widgetGetFocusOnClick Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Returns whether the widget should grab focus when it is clicked with the mouse.
getFocusable
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines whether widget
can own the input focus.
See widgetSetFocusable
.
getFontMap
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe FontMap) | Returns: A |
Gets the font map of widget
.
See widgetSetFontMap
.
getFontOptions
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe FontOptions) | Returns: the |
Returns the cairo_font_options_t
of widget.
Seee widgetSetFontOptions
.
getFrameClock
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe FrameClock) | Returns: a |
Obtains the frame clock for a widget.
The frame clock is a global “ticker” that can be used to drive
animations and repaints. The most common reason to get the frame
clock is to call frameClockGetFrameTime
, in order
to get a time to use for animating. For example you might record
the start of the animation with an initial value from
frameClockGetFrameTime
, and then update the animation
by calling frameClockGetFrameTime
again during each repaint.
frameClockRequestPhase
will result in a new frame on the
clock, but won’t necessarily repaint any widgets. To repaint a
widget, you have to use widgetQueueDraw
which invalidates
the widget (thus scheduling it to receive a draw on the next
frame). widgetQueueDraw
will also end up requesting a frame
on the appropriate frame clock.
A widget’s frame clock will not change while the widget is mapped. Reparenting a widget (which implies a temporary unmap) can change the widget’s frame clock.
Unrealized widgets do not have a frame clock.
getHalign
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Align | Returns: the horizontal alignment of |
Gets the horizontal alignment of widget
.
For backwards compatibility reasons this method will never return
AlignBaseline
, but instead it will convert it to
AlignFill
. Baselines are not supported for horizontal
alignment.
getHasTooltip
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: current value of |
Returns the current value of the has-tooltip
property.
getHeight
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: The height of |
Returns the content height of the widget.
This function returns the height passed to its
size-allocate implementation, which is the height you
should be using in Widget
.snapshot
().
For pointer events, see widgetContains
.
getHexpand
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: whether hexpand flag is set |
Gets whether the widget would like any available extra horizontal space.
When a user resizes a GtkWindow
, widgets with expand=TRUE
generally receive the extra space. For example, a list or
scrollable area or document in your window would often be set to
expand.
Containers should use widgetComputeExpand
rather
than this function, to see whether a widget, or any of its children,
has the expand flag set. If any child of a widget wants to
expand, the parent may ask to expand also.
This function only looks at the widget’s own hexpand flag, rather than computing whether the entire widget tree rooted at this widget wants to expand.
getHexpandSet
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: whether hexpand has been explicitly set |
Gets whether widgetSetHexpand
has been used
to explicitly set the expand flag on this widget.
If Widget:hexpand property is set, then it
overrides any computed expand value based on child widgets.
If hexpand
is not set, then the expand value depends on
whether any children of the widget would like to expand.
There are few reasons to use this function, but it’s here for completeness and consistency.
getLastChild
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Widget) | Returns: The widget's last child |
Returns the widgets last child.
This API is primarily meant for widget implementations.
getLayoutManager
widgetGetLayoutManager Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe LayoutManager) | Returns: a |
Retrieves the layout manager used by widget
.
getMapped
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool |
Whether the widget is mapped.
getMarginBottom
widgetGetMarginBottom Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: The bottom margin of |
Gets the bottom margin of widget
.
getMarginEnd
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: The end margin of |
Gets the end margin of widget
.
getMarginStart
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: The start margin of |
Gets the start margin of widget
.
getMarginTop
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: The top margin of |
Gets the top margin of widget
.
getName
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Text | Returns: name of the widget. This string is owned by GTK and should not be modified or freed |
Retrieves the name of a widget.
See widgetSetName
for the significance of widget names.
getNative
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Native) | Returns: the |
Returns the nearest GtkNative
ancestor of widget
.
This function will return Nothing
if the widget is not
contained inside a widget tree with a native ancestor.
GtkNative
widgets will return themselves here.
getNextSibling
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Widget) | Returns: The widget's next sibling |
Returns the widgets next sibling.
This API is primarily meant for widget implementations.
getOpacity
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Double | Returns: the requested opacity for this widget. |
Fetches
the requested opacity for this widget.
See widgetSetOpacity
.
getOverflow
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Overflow | Returns: The widget's overflow. |
Returns the widgets overflow value.
getPangoContext
widgetGetPangoContext Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Context | Returns: the |
Gets a PangoContext
with the appropriate font map, font description,
and base direction for this widget.
Unlike the context returned by widgetCreatePangoContext
,
this context is owned by the widget (it can be used until the screen
for the widget changes or the widget is removed from its toplevel),
and will be updated to match any changes to the widget’s attributes.
This can be tracked by listening to changes of the
Widget:root property on the widget.
getParent
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Widget) | Returns: the parent widget of |
Returns the parent widget of widget
.
getPreferredSize
widgetGetPreferredSize Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Requisition, Requisition) |
Retrieves the minimum and natural size of a widget, taking into account the widget’s preference for height-for-width management.
This is used to retrieve a suitable size by container widgets which do
not impose any restrictions on the child placement. It can be used
to deduce toplevel window and menu sizes as well as child widgets in
free-form containers such as GtkFixed
.
Handle with care. Note that the natural height of a height-for-width widget will generally be a smaller size than the minimum height, since the required height for the natural width is generally smaller than the required height for the minimum width.
Use widgetMeasure
if you want to support baseline alignment.
getPrevSibling
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Widget) | Returns: The widget's previous sibling |
Returns the widgets previous sibling.
This API is primarily meant for widget implementations.
getPrimaryClipboard
widgetGetPrimaryClipboard Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Clipboard | Returns: the appropriate clipboard object |
Gets the primary clipboard of widget
.
This is a utility function to get the primary clipboard object
for the GdkDisplay
that widget
is using.
Note that this function always works, even when widget
is not
realized yet.
getRealized
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool |
Determines whether widget
is realized.
getReceivesDefault
widgetGetReceivesDefault Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines whether widget
is always treated as the default widget
within its toplevel when it has the focus, even if another widget
is the default.
getRequestMode
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m SizeRequestMode | Returns: The |
Gets whether the widget prefers a height-for-width layout or a width-for-height layout.
Single-child widgets generally propagate the preference of their child, more complex widgets need to request something either in context of their children or in context of their allocation capabilities.
getRoot
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Root) | Returns: the root widget of |
Returns the GtkRoot
widget of widget
.
This function will return Nothing
if the widget is not contained
inside a widget tree with a root widget.
GtkRoot
widgets will return themselves here.
getScaleFactor
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: the scale factor for |
Retrieves the internal scale factor that maps from window coordinates to the actual device pixels.
On traditional systems this is 1, on high density outputs, it can be a higher value (typically 2).
getSensitive
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Returns the widget’s sensitivity.
This function returns the value that has been set using
widgetSetSensitive
).
The effective sensitivity of a widget is however determined
by both its own and its parent widget’s sensitivity.
See widgetIsSensitive
.
getSettings
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Settings | Returns: the relevant |
Gets the settings object holding the settings used for this widget.
Note that this function can only be called when the GtkWidget
is attached to a toplevel, since the settings object is specific
to a particular GdkDisplay
. If you want to monitor the widget for
changes in its settings, connect to the notify::display
signal.
getSize
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Orientation |
|
-> m Int32 | Returns: The size of |
Returns the content width or height of the widget.
Which dimension is returned depends on orientation
.
This is equivalent to calling widgetGetWidth
for OrientationHorizontal
or widgetGetHeight
for OrientationVertical
, but can be used when
writing orientation-independent code, such as when
implementing Orientable
widgets.
getSizeRequest
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Int32, Int32) |
Gets the size request that was explicitly set for the widget using
widgetSetSizeRequest
.
A value of -1 stored in width
or height
indicates that that
dimension has not been set explicitly and the natural requisition
of the widget will be used instead. See
widgetSetSizeRequest
. To get the size a widget will
actually request, call widgetMeasure
instead of
this function.
getStateFlags
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m [StateFlags] | Returns: The state flags for widget |
Returns the widget state as a flag set.
It is worth mentioning that the effective StateFlagsInsensitive
state will be returned, that is, also based on parent insensitivity,
even if widget
itself is sensitive.
Also note that if you are looking for a way to obtain the
[flagsgtk
.StateFlags] to pass to a StyleContext
method, you should look at styleContextGetState
.
getStyleContext
widgetGetStyleContext Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m StyleContext | Returns: the widgets |
Returns the style context associated to widget
.
The returned object is guaranteed to be the same
for the lifetime of widget
.
getTemplateChild
widgetGetTemplateChild Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> GType |
|
-> Text |
|
-> m Object | Returns: The object built in the template XML with
the id |
Fetch an object build from the template XML for widgetType
in
this widget
instance.
This will only report children which were previously declared
with widgetClassBindTemplateChildFull
or one of its
variants.
This function is only meant to be called for code which is private
to the widgetType
which declared the child and is meant for language
bindings which cannot easily make use of the GObject structure offsets.
getTooltipMarkup
widgetGetTooltipMarkup Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Text) | Returns: the tooltip text |
Gets the contents of the tooltip for widget
.
If the tooltip has not been set using
widgetSetTooltipMarkup
, this
function returns Nothing
.
getTooltipText
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m (Maybe Text) | Returns: the tooltip text |
Gets the contents of the tooltip for widget
.
If the widget
's tooltip was set using
widgetSetTooltipMarkup
,
this function will return the escaped text.
getValign
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Align | Returns: the vertical alignment of |
Gets the vertical alignment of widget
.
getVexpand
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: whether vexpand flag is set |
Gets whether the widget would like any available extra vertical space.
See widgetGetHexpand
for more detail.
getVexpandSet
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: whether vexpand has been explicitly set |
Gets whether widgetSetVexpand
has been used to
explicitly set the expand flag on this widget.
See widgetGetHexpandSet
for more detail.
getVisible
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines whether the widget is visible.
If you want to take into account whether the widget’s
parent is also marked as visible, use
widgetIsVisible
instead.
This function does not check if the widget is obscured in any way.
See widgetSetVisible
.
getWidth
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Int32 | Returns: The width of |
Returns the content width of the widget.
This function returns the width passed to its
size-allocate implementation, which is the width you
should be using in Widget
.snapshot
().
For pointer events, see widgetContains
.
grabFocus
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Causes widget
to have the keyboard focus for the GtkWindow
it's inside.
If widget
is not focusable, or its Widget
.grab_focus
()
implementation cannot transfer the focus to a descendant of widget
that is focusable, it will not take focus and False
will be returned.
Calling widgetGrabFocus
on an already focused widget
is allowed, should not have an effect, and return True
.
hasCssClass
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Text |
|
-> m Bool | Returns: |
Returns whether cssClass
is currently applied to widget
.
hasDefault
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines whether widget
is the current default widget
within its toplevel.
hasFocus
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines if the widget has the global input focus.
See widgetIsFocus
for the difference between
having the global input focus, and only having the focus
within a toplevel.
hasVisibleFocus
widgetHasVisibleFocus Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines if the widget should show a visible indication that it has the global input focus.
This is a convenience function that takes into account whether
focus indication should currently be shown in the toplevel window
of widget
. See windowGetFocusVisible
for more
information about focus indication.
To find out if the widget has the global input focus, use
widgetHasFocus
.
hide
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Reverses the effects of widgetShow
.
This is causing the widget to be hidden (invisible to the user).
inDestruction
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Returns whether the widget is currently being destroyed.
This information can sometimes be used to avoid doing unnecessary work.
initTemplate
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Creates and initializes child widgets defined in templates.
This function must be called in the instance initializer
for any class which assigned itself a template using
widgetClassSetTemplate
.
It is important to call this function in the instance initializer
of a GtkWidget
subclass and not in GObject.constructed()
or
GObject.constructor()
for two reasons:
- derived widgets will assume that the composite widgets defined by its parent classes have been created in their relative instance initializers
- when calling
g_object_new()
on a widget with composite templates, it’s important to build the composite widgets before the construct properties are set. Properties passed tog_object_new()
should take precedence over properties set in the private template XML
A good rule of thumb is to call this function as the first thing in an instance initialization function.
insertActionGroup
widgetInsertActionGroup Source #
:: (HasCallStack, MonadIO m, IsWidget a, IsActionGroup b) | |
=> a |
|
-> Text |
|
-> Maybe b |
|
-> m () |
Inserts group
into widget
.
Children of widget
that implement Actionable
can
then be associated with actions in group
by setting their
“action-name” to prefix
.action-name
.
Note that inheritance is defined for individual actions. I.e.
even if you insert a group with prefix prefix
, actions with
the same prefix will still be inherited from the parent, unless
the group contains an action with the same name.
If group
is Nothing
, a previously inserted group for name
is
removed from widget
.
insertAfter
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b, IsWidget c) | |
=> a |
|
-> b |
|
-> Maybe c |
|
-> m () |
Inserts widget
into the child widget list of parent
.
It will be placed after previousSibling
, or at the beginning if
previousSibling
is Nothing
.
After calling this function, gtk_widget_get_prev_sibling(widget)
will return previousSibling
.
If parent
is already set as the parent widget of widget
, this
function can also be used to reorder widget
in the child widget
list of parent
.
This API is primarily meant for widget implementations; if you are just using a widget, you *must* use its own API for adding children.
insertBefore
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b, IsWidget c) | |
=> a |
|
-> b |
|
-> Maybe c |
|
-> m () |
Inserts widget
into the child widget list of parent
.
It will be placed before nextSibling
, or at the end if
nextSibling
is Nothing
.
After calling this function, gtk_widget_get_next_sibling(widget)
will return nextSibling
.
If parent
is already set as the parent widget of widget
, this function
can also be used to reorder widget
in the child widget list of parent
.
This API is primarily meant for widget implementations; if you are just using a widget, you *must* use its own API for adding children.
isAncestor
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> b |
|
-> m Bool | Returns: |
Determines whether widget
is somewhere inside ancestor
,
possibly with intermediate containers.
isDrawable
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool |
Determines whether widget
can be drawn to.
A widget can be drawn if it is mapped and visible.
isFocus
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines if the widget is the focus widget within its toplevel.
This does not mean that the Widget:hasFocus property is necessarily set; Widget:hasFocus will only be set if the toplevel widget additionally has the global input focus.
isSensitive
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Returns the widget’s effective sensitivity.
This means it is sensitive itself and also its parent widget is sensitive.
isVisible
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Determines whether the widget and all its parents are marked as visible.
This function does not check if the widget is obscured in any way.
See also widgetGetVisible
and
widgetSetVisible
.
keynavFailed
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> DirectionType |
|
-> m Bool | Returns: |
Emits the ::keynav-failed
signal on the widget.
This function should be called whenever keyboard navigation within a single widget hits a boundary.
The return value of this function should be interpreted
in a way similar to the return value of
widgetChildFocus
. When True
is returned,
stay in the widget, the failed keyboard navigation is OK
and/or there is nowhere we can/should move the focus to.
When False
is returned, the caller should continue with
keyboard navigation outside the widget, e.g. by calling
widgetChildFocus
on the widget’s toplevel.
The default Widget::keynavFailed handler returns
False
for DirectionTypeTabForward
and DirectionTypeTabBackward
.
For the other values of GtkDirectionType
it returns True
.
Whenever the default handler returns True
, it also calls
widgetErrorBell
to notify the user of the
failed keyboard navigation.
A use case for providing an own implementation of keynavFailed
(either by connecting to it or by overriding it) would be a row of
Entry
widgets where the user should be able to navigate
the entire row with the cursor keys, as e.g. known from user
interfaces that require entering license keys.
listMnemonicLabels
widgetListMnemonicLabels Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m [Widget] | Returns: the list
of mnemonic labels; free this list with |
Returns the widgets for which this widget is the target of a mnemonic.
Typically, these widgets will be labels. See, for example,
labelSetMnemonicWidget
.
The widgets in the list are not individually referenced.
If you want to iterate through the list and perform actions
involving callbacks that might destroy the widgets, you
must call g_list_foreach (result, (GFunc)g_object_ref, NULL)
first, and then unref all the widgets afterwards.
map
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Causes a widget to be mapped if it isn’t already.
This function is only for use in widget implementations.
measure
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Orientation |
|
-> Int32 |
|
-> m (Int32, Int32, Int32, Int32) |
Measures widget
in the orientation orientation
and for the given forSize
.
As an example, if orientation
is OrientationHorizontal
and forSize
is 300, this functions will compute the minimum and natural width of widget
if it is allocated at a height of 300 pixels.
See GtkWidget’s geometry management section for
a more details on implementing GtkWidgetClass.measure()
.
mnemonicActivate
widgetMnemonicActivate Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m Bool | Returns: |
Emits the mnemonicActivate signal.
observeChildren
widgetObserveChildren Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m ListModel | Returns:
a |
Returns a GListModel
to track the children of widget
.
Calling this function will enable extra internal bookkeeping to track children and emit signals on the returned listmodel. It may slow down operations a lot.
Applications should try hard to avoid calling this function because of the slowdowns.
observeControllers
widgetObserveControllers Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m ListModel | Returns:
a |
Returns a GListModel
to track the EventController
s
of widget
.
Calling this function will enable extra internal bookkeeping to track controllers and emit signals on the returned listmodel. It may slow down operations a lot.
Applications should try hard to avoid calling this function because of the slowdowns.
pick
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Double |
|
-> Double |
|
-> [PickFlags] |
|
-> m (Maybe Widget) | Returns: The widget descendant at the given point |
Finds the descendant of widget
closest to the point (x
, y
).
The point must be given in widget coordinates, so (0, 0) is assumed
to be the top left of widget
's content area.
Usually widgets will return Nothing
if the given coordinate is not
contained in widget
checked via widgetContains
.
Otherwise they will recursively try to find a child that does
not return Nothing
. Widgets are however free to customize their
picking algorithm.
This function is used on the toplevel to determine the widget below the mouse cursor for purposes of hover highlighting and delivering events.
queueAllocate
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Flags the widget for a rerun of the Widget
.size_allocate
()
function.
Use this function instead of widgetQueueResize
when the widget
's size request didn't change but it wants to
reposition its contents.
An example user of this function is widgetSetHalign
.
This function is only for use in widget implementations.
queueDraw
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Schedules this widget to be redrawn in the paint phase of the current or the next frame.
This means widget
's Widget
.snapshot
()
implementation will be called.
queueResize
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Flags a widget to have its size renegotiated.
This should be called when a widget for some reason has a new
size request. For example, when you change the text in a
Label
, the label queues a resize to ensure there’s
enough space for the new text.
Note that you cannot call widgetQueueResize
on a widget
from inside its implementation of the Widget
.size_allocate
()
virtual method. Calls to widgetQueueResize
from inside
Widget
.size_allocate
() will be silently ignored.
This function is only for use in widget implementations.
realize
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Creates the GDK resources associated with a widget.
Normally realization happens implicitly; if you show a widget and all its parent containers, then the widget will be realized and mapped automatically.
Realizing a widget requires all the widget’s parent widgets to be
realized; calling this function realizes the widget’s parents
in addition to widget
itself. If a widget is not yet inside a
toplevel window when you realize it, bad things will happen.
This function is primarily used in widget implementations, and isn’t very useful otherwise. Many times when you think you might need it, a better approach is to connect to a signal that will be called after the widget is realized automatically, such as Widget::realize.
removeController
widgetRemoveController Source #
:: (HasCallStack, MonadIO m, IsWidget a, IsEventController b) | |
=> a |
|
-> b |
|
-> m () |
Removes controller
from widget
, so that it doesn't process
events anymore.
It should not be used again.
Widgets will remove all event controllers automatically when they are destroyed, there is normally no need to call this function.
removeCssClass
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Text |
|
-> m () |
Removes a style from widget
.
After this, the style of widget
will stop matching for cssClass
.
removeMnemonicLabel
widgetRemoveMnemonicLabel Source #
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> b |
|
-> m () |
Removes a widget from the list of mnemonic labels for this widget.
See widgetListMnemonicLabels
. The widget must
have previously been added to the list with
widgetAddMnemonicLabel
.
removeTickCallback
widgetRemoveTickCallback Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Word32 |
|
-> m () |
Removes a tick callback previously registered with
widgetAddTickCallback
.
setCanFocus
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Specifies whether the input focus can enter the widget or any of its children.
Applications should set canFocus
to False
to mark a
widget as for pointer/touch use only.
Note that having canFocus
be True
is only one of the
necessary conditions for being focusable. A widget must
also be sensitive and focusable and not have an ancestor
that is marked as not can-focus in order to receive input
focus.
See widgetGrabFocus
for actually setting
the input focus on a widget.
setCanTarget
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets whether widget
can be the target of pointer events.
setChildVisible
widgetSetChildVisible Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets whether widget
should be mapped along with its parent.
The child visibility can be set for widget before it is added
to a container with widgetSetParent
, to avoid
mapping children unnecessary before immediately unmapping them.
However it will be reset to its default state of True
when the
widget is removed from a container.
Note that changing the child visibility of a widget does not queue a resize on the widget. Most of the time, the size of a widget is computed from all visible children, whether or not they are mapped. If this is not the case, the container can queue a resize itself.
This function is only useful for container implementations and should never be called by an application.
setCssClasses
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> [Text] |
|
-> m () |
Clear all style classes applied to widget
and replace them with classes
.
setCursor
:: (HasCallStack, MonadIO m, IsWidget a, IsCursor b) | |
=> a |
|
-> Maybe b |
|
-> m () |
Sets the cursor to be shown when pointer devices point
towards widget
.
If the cursor
is NULL, widget
will use the cursor
inherited from the parent widget.
setCursorFromName
widgetSetCursorFromName Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Maybe Text |
|
-> m () |
Sets a named cursor to be shown when pointer devices point
towards widget
.
This is a utility function that creates a cursor via
cursorNewFromName
and then sets it on widget
with widgetSetCursor
. See those functions for
details.
On top of that, this function allows name
to be Nothing
, which
will do the same as calling widgetSetCursor
with a Nothing
cursor.
setDefaultDirection
widgetSetDefaultDirection Source #
:: (HasCallStack, MonadIO m) | |
=> TextDirection |
|
-> m () |
Sets the default reading direction for widgets.
See widgetSetDirection
.
setDirection
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> TextDirection |
|
-> m () |
Sets the reading direction on a particular widget.
This direction controls the primary direction for widgets containing text, and also the direction in which the children of a container are packed. The ability to set the direction is present in order so that correct localization into languages with right-to-left reading directions can be done. Generally, applications will let the default reading direction present, except for containers where the containers are arranged in an order that is explicitly visual rather than logical (such as buttons for text justification).
If the direction is set to TextDirectionNone
, then the value
set by [funcgtk
.Widget.set_default_direction] will be used.
setFocusChild
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> Maybe b |
|
-> m () |
Set child
as the current focus child of widget
.
This function is only suitable for widget implementations.
If you want a certain widget to get the input focus, call
widgetGrabFocus
on it.
setFocusOnClick
widgetSetFocusOnClick Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets whether the widget should grab focus when it is clicked with the mouse.
Making mouse clicks not grab focus is useful in places like toolbars where you don’t want the keyboard focus removed from the main area of the application.
setFocusable
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Specifies whether widget
can own the input focus.
Widget implementations should set focusable
to True
in
their init()
function if they want to receive keyboard input.
Note that having focusable
be True
is only one of the
necessary conditions for being focusable. A widget must
also be sensitive and can-focus and not have an ancestor
that is marked as not can-focus in order to receive input
focus.
See widgetGrabFocus
for actually setting
the input focus on a widget.
setFontMap
:: (HasCallStack, MonadIO m, IsWidget a, IsFontMap b) | |
=> a |
|
-> Maybe b |
|
-> m () |
Sets the font map to use for Pango rendering.
The font map is the object that is used to look up fonts. Setting a custom font map can be useful in special situations, e.g. when you need to add application-specific fonts to the set of available fonts.
When not set, the widget will inherit the font map from its parent.
setFontOptions
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Maybe FontOptions |
|
-> m () |
Sets the cairo_font_options_t
used for Pango rendering
in this widget.
When not set, the default font options for the GdkDisplay
will be used.
setHalign
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Align |
|
-> m () |
Sets the horizontal alignment of widget
.
setHasTooltip
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets the has-tooltip
property on widget
to hasTooltip
.
setHexpand
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets whether the widget would like any available extra horizontal space.
When a user resizes a GtkWindow
, widgets with expand=TRUE
generally receive the extra space. For example, a list or
scrollable area or document in your window would often be set to
expand.
Call this function to set the expand flag if you would like your widget to become larger horizontally when the window has extra room.
By default, widgets automatically expand if any of their children
want to expand. (To see if a widget will automatically expand given
its current children and state, call widgetComputeExpand
.
A container can decide how the expandability of children affects the
expansion of the container by overriding the compute_expand virtual
method on GtkWidget
.).
Setting hexpand explicitly with this function will override the automatic expand behavior.
This function forces the widget to expand or not to expand,
regardless of children. The override occurs because
widgetSetHexpand
sets the hexpand-set property (see
widgetSetHexpandSet
) which causes the widget’s hexpand
value to be used, rather than looking at children and widget state.
setHexpandSet
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets whether the hexpand flag will be used.
The Widget:hexpandSet property will be set
automatically when you call widgetSetHexpand
to set hexpand, so the most likely reason to use this function
would be to unset an explicit expand flag.
If hexpand is set, then it overrides any computed expand value based on child widgets. If hexpand is not set, then the expand value depends on whether any children of the widget would like to expand.
There are few reasons to use this function, but it’s here for completeness and consistency.
setLayoutManager
widgetSetLayoutManager Source #
:: (HasCallStack, MonadIO m, IsWidget a, IsLayoutManager b) | |
=> a |
|
-> Maybe b |
|
-> m () |
Sets the layout manager delegate instance that provides an
implementation for measuring and allocating the children of widget
.
setMarginBottom
widgetSetMarginBottom Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Int32 |
|
-> m () |
Sets the bottom margin of widget
.
setMarginEnd
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Int32 |
|
-> m () |
Sets the end margin of widget
.
setMarginStart
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Int32 |
|
-> m () |
Sets the start margin of widget
.
setMarginTop
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Int32 |
|
-> m () |
Sets the top margin of widget
.
setName
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Text |
|
-> m () |
Sets a widgets name.
Setting a name allows you to refer to the widget from a
CSS file. You can apply a style to widgets with a particular name
in the CSS file. See the documentation for the CSS syntax (on the
same page as the docs for StyleContext
.
Note that the CSS syntax has certain special characters to delimit and represent elements in a selector (period, #, >, *...), so using these will make your widget impossible to match by name. Any combination of alphanumeric symbols, dashes and underscores will suffice.
setOpacity
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Double |
|
-> m () |
Request the widget
to be rendered partially transparent.
An opacity of 0 is fully transparent and an opacity of 1 is fully opaque.
Opacity works on both toplevel widgets and child widgets, although
there are some limitations: For toplevel widgets, applying opacity
depends on the capabilities of the windowing system. On X11, this
has any effect only on X displays with a compositing manager,
see displayIsComposited
. On Windows and Wayland it should
always work, although setting a window’s opacity after the window
has been shown may cause some flicker.
Note that the opacity is inherited through inclusion — if you set
a toplevel to be partially translucent, all of its content will
appear translucent, since it is ultimatively rendered on that
toplevel. The opacity value itself is not inherited by child
widgets (since that would make widgets deeper in the hierarchy
progressively more translucent). As a consequence, Popover
s
and other Native
widgets with their own surface will use their
own opacity value, and thus by default appear non-translucent,
even if they are attached to a toplevel that is translucent.
setOverflow
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Overflow |
|
-> m () |
Sets how widget
treats content that is drawn outside the
widget's content area.
See the definition of Overflow
for details.
This setting is provided for widget implementations and should not be used by application code.
The default value is OverflowVisible
.
setParent
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> b |
|
-> m () |
Sets parent
as the parent widget of widget
.
This takes care of details such as updating the state and style
of the child to reflect its new location and resizing the parent.
The opposite function is widgetUnparent
.
This function is useful only when implementing subclasses of
GtkWidget
.
setReceivesDefault
widgetSetReceivesDefault Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Specifies whether widget
will be treated as the default
widget within its toplevel when it has the focus, even if
another widget is the default.
setSensitive
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets the sensitivity of a widget.
A widget is sensitive if the user can interact with it. Insensitive widgets are “grayed out” and the user can’t interact with them. Insensitive widgets are known as “inactive”, “disabled”, or “ghosted” in some other toolkits.
setSizeRequest
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Int32 |
|
-> Int32 |
|
-> m () |
Sets the minimum size of a widget.
That is, the widget’s size request will be at least width
by height
. You can use this function to force a widget to
be larger than it normally would be.
In most cases, windowSetDefaultSize
is a better
choice for toplevel windows than this function; setting the default
size will still allow users to shrink the window. Setting the size
request will force them to leave the window at least as large as
the size request.
Note the inherent danger of setting any fixed size - themes, translations into other languages, different fonts, and user action can all change the appropriate size for a given widget. So, it's basically impossible to hardcode a size that will always be correct.
The size request of a widget is the smallest size a widget can accept while still functioning well and drawing itself correctly. However in some strange cases a widget may be allocated less than its requested size, and in many cases a widget may be allocated more space than it requested.
If the size request in a given direction is -1 (unset), then the “natural” size request of the widget will be used instead.
The size request set here does not include any margin from the
properties
Widget:marginStart,
Widget:marginEnd,
Widget:marginTop, and
Widget:marginBottom, but it does include pretty
much all other padding or border properties set by any subclass
of GtkWidget
.
setStateFlags
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> [StateFlags] |
|
-> Bool |
|
-> m () |
Turns on flag values in the current widget state.
Typical widget states are insensitive, prelighted, etc.
This function accepts the values StateFlagsDirLtr
and
StateFlagsDirRtl
but ignores them. If you want to set
the widget's direction, use widgetSetDirection
.
This function is for use in widget implementations.
setTooltipMarkup
widgetSetTooltipMarkup Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Maybe Text |
|
-> m () |
Sets markup
as the contents of the tooltip, which is marked
up with Pango markup.
This function will take care of setting the Widget:hasTooltip as a side effect, and of the default handler for the Widget::queryTooltip signal.
See also tooltipSetMarkup
.
setTooltipText
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Maybe Text |
|
-> m () |
Sets text
as the contents of the tooltip.
If text
contains any markup, it will be escaped.
This function will take care of setting Widget:hasTooltip as a side effect, and of the default handler for the Widget::queryTooltip signal.
See also tooltipSetText
.
setValign
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Align |
|
-> m () |
Sets the vertical alignment of widget
.
setVexpand
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets whether the widget would like any available extra vertical space.
See widgetSetHexpand
for more detail.
setVexpandSet
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets whether the vexpand flag will be used.
See widgetSetHexpandSet
for more detail.
setVisible
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Bool |
|
-> m () |
Sets the visibility state of widget
.
Note that setting this to True
doesn’t mean the widget is
actually viewable, see widgetGetVisible
.
This function simply calls widgetShow
or
widgetHide
but is nicer to use when the
visibility of the widget depends on some condition.
shouldLayout
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m Bool | Returns: |
Returns whether widget
should contribute to
the measuring and allocation of its parent.
This is False
for invisible children, but also
for children that have their own surface.
show
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Flags a widget to be displayed.
Any widget that isn’t shown will not appear on the screen.
Remember that you have to show the containers containing a widget, in addition to the widget itself, before it will appear onscreen.
When a toplevel container is shown, it is immediately realized and mapped; other shown widgets are realized and mapped when their toplevel container is realized and mapped.
sizeAllocate
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> Rectangle |
|
-> Int32 |
|
-> m () |
Allocates widget with a transformation that translates
the origin to the position in allocation
.
This is a simple form of widgetAllocate
.
snapshotChild
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b, IsSnapshot c) | |
=> a |
|
-> b |
|
-> c |
|
-> m () |
Snapshot the a child of widget
.
When a widget receives a call to the snapshot function,
it must send synthetic Widget
.snapshot
() calls
to all children. This function provides a convenient way
of doing this. A widget, when it receives a call to its
Widget
.snapshot
() function, calls
widgetSnapshotChild
once for each child, passing in
the snapshot
the widget received.
widgetSnapshotChild
takes care of translating the origin of
snapshot
, and deciding whether the child needs to be snapshot.
This function does nothing for children that implement GtkNative
.
translateCoordinates
widgetTranslateCoordinates Source #
:: (HasCallStack, MonadIO m, IsWidget a, IsWidget b) | |
=> a |
|
-> b |
|
-> Double |
|
-> Double |
|
-> m (Bool, Double, Double) | Returns: |
Translate coordinates relative to srcWidget
’s allocation
to coordinates relative to destWidget
’s allocations.
In order to perform this operation, both widget must share a common ancestor.
triggerTooltipQuery
widgetTriggerTooltipQuery Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Triggers a tooltip query on the display where the toplevel
of widget
is located.
unmap
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Causes a widget to be unmapped if it’s currently mapped.
This function is only for use in widget implementations.
unparent
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Dissociate widget
from its parent.
This function is only for use in widget implementations, typically in dispose.
unrealize
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> m () |
Causes a widget to be unrealized (frees all GDK resources associated with the widget).
This function is only useful in widget implementations.
unsetStateFlags
widgetUnsetStateFlags Source #
:: (HasCallStack, MonadIO m, IsWidget a) | |
=> a |
|
-> [StateFlags] |
|
-> m () |
Turns off flag values for the current widget state.
See widgetSetStateFlags
.
This function is for use in widget implementations.
Properties
canFocus
Whether the widget or any of its descendents can accept the input focus.
This property is meant to be set by widget implementations, typically in their instance init function.
constructWidgetCanFocus :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “can-focus
” property. This is rarely needed directly, but it is used by new
.
getWidgetCanFocus :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “can-focus
” property.
When overloading is enabled, this is equivalent to
get
widget #canFocus
setWidgetCanFocus :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “can-focus
” property.
When overloading is enabled, this is equivalent to
set
widget [ #canFocus:=
value ]
canTarget
Whether the widget can receive pointer events.
constructWidgetCanTarget :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “can-target
” property. This is rarely needed directly, but it is used by new
.
getWidgetCanTarget :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “can-target
” property.
When overloading is enabled, this is equivalent to
get
widget #canTarget
setWidgetCanTarget :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “can-target
” property.
When overloading is enabled, this is equivalent to
set
widget [ #canTarget:=
value ]
cssClasses
A list of css classes applied to this widget.
constructWidgetCssClasses :: (IsWidget o, MonadIO m) => [Text] -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “css-classes
” property. This is rarely needed directly, but it is used by new
.
getWidgetCssClasses :: (MonadIO m, IsWidget o) => o -> m (Maybe [Text]) Source #
Get the value of the “css-classes
” property.
When overloading is enabled, this is equivalent to
get
widget #cssClasses
setWidgetCssClasses :: (MonadIO m, IsWidget o) => o -> [Text] -> m () Source #
Set the value of the “css-classes
” property.
When overloading is enabled, this is equivalent to
set
widget [ #cssClasses:=
value ]
cssName
The name of this widget in the CSS tree.
This property is meant to be set by widget implementations, typically in their instance init function.
constructWidgetCssName :: (IsWidget o, MonadIO m) => Text -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “css-name
” property. This is rarely needed directly, but it is used by new
.
getWidgetCssName :: (MonadIO m, IsWidget o) => o -> m Text Source #
Get the value of the “css-name
” property.
When overloading is enabled, this is equivalent to
get
widget #cssName
cursor
The cursor used by widget
.
clearWidgetCursor :: (MonadIO m, IsWidget o) => o -> m () Source #
Set the value of the “cursor
” property to Nothing
.
When overloading is enabled, this is equivalent to
clear
#cursor
constructWidgetCursor :: (IsWidget o, MonadIO m, IsCursor a) => a -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “cursor
” property. This is rarely needed directly, but it is used by new
.
getWidgetCursor :: (MonadIO m, IsWidget o) => o -> m (Maybe Cursor) Source #
Get the value of the “cursor
” property.
When overloading is enabled, this is equivalent to
get
widget #cursor
setWidgetCursor :: (MonadIO m, IsWidget o, IsCursor a) => o -> a -> m () Source #
Set the value of the “cursor
” property.
When overloading is enabled, this is equivalent to
set
widget [ #cursor:=
value ]
focusOnClick
Whether the widget should grab focus when it is clicked with the mouse.
This property is only relevant for widgets that can take focus.
constructWidgetFocusOnClick :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “focus-on-click
” property. This is rarely needed directly, but it is used by new
.
getWidgetFocusOnClick :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “focus-on-click
” property.
When overloading is enabled, this is equivalent to
get
widget #focusOnClick
setWidgetFocusOnClick :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “focus-on-click
” property.
When overloading is enabled, this is equivalent to
set
widget [ #focusOnClick:=
value ]
focusable
Whether this widget itself will accept the input focus.
constructWidgetFocusable :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “focusable
” property. This is rarely needed directly, but it is used by new
.
getWidgetFocusable :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “focusable
” property.
When overloading is enabled, this is equivalent to
get
widget #focusable
setWidgetFocusable :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “focusable
” property.
When overloading is enabled, this is equivalent to
set
widget [ #focusable:=
value ]
halign
How to distribute horizontal space if widget gets extra space.
constructWidgetHalign :: (IsWidget o, MonadIO m) => Align -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “halign
” property. This is rarely needed directly, but it is used by new
.
getWidgetHalign :: (MonadIO m, IsWidget o) => o -> m Align Source #
Get the value of the “halign
” property.
When overloading is enabled, this is equivalent to
get
widget #halign
setWidgetHalign :: (MonadIO m, IsWidget o) => o -> Align -> m () Source #
Set the value of the “halign
” property.
When overloading is enabled, this is equivalent to
set
widget [ #halign:=
value ]
hasDefault
Whether the widget is the default widget.
getWidgetHasDefault :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “has-default
” property.
When overloading is enabled, this is equivalent to
get
widget #hasDefault
hasFocus
Whether the widget has the input focus.
getWidgetHasFocus :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “has-focus
” property.
When overloading is enabled, this is equivalent to
get
widget #hasFocus
hasTooltip
Enables or disables the emission of the queryTooltip signal on widget
.
A value of True
indicates that widget
can have a tooltip, in this case
the widget will be queried using Widget::queryTooltip to
determine whether it will provide a tooltip or not.
constructWidgetHasTooltip :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “has-tooltip
” property. This is rarely needed directly, but it is used by new
.
getWidgetHasTooltip :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “has-tooltip
” property.
When overloading is enabled, this is equivalent to
get
widget #hasTooltip
setWidgetHasTooltip :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “has-tooltip
” property.
When overloading is enabled, this is equivalent to
set
widget [ #hasTooltip:=
value ]
heightRequest
Override for height request of the widget.
If this is -1, the natural request will be used.
constructWidgetHeightRequest :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “height-request
” property. This is rarely needed directly, but it is used by new
.
getWidgetHeightRequest :: (MonadIO m, IsWidget o) => o -> m Int32 Source #
Get the value of the “height-request
” property.
When overloading is enabled, this is equivalent to
get
widget #heightRequest
setWidgetHeightRequest :: (MonadIO m, IsWidget o) => o -> Int32 -> m () Source #
Set the value of the “height-request
” property.
When overloading is enabled, this is equivalent to
set
widget [ #heightRequest:=
value ]
hexpand
Whether to expand horizontally.
constructWidgetHexpand :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “hexpand
” property. This is rarely needed directly, but it is used by new
.
getWidgetHexpand :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “hexpand
” property.
When overloading is enabled, this is equivalent to
get
widget #hexpand
setWidgetHexpand :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “hexpand
” property.
When overloading is enabled, this is equivalent to
set
widget [ #hexpand:=
value ]
hexpandSet
Whether to use the hexpand
property.
constructWidgetHexpandSet :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “hexpand-set
” property. This is rarely needed directly, but it is used by new
.
getWidgetHexpandSet :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “hexpand-set
” property.
When overloading is enabled, this is equivalent to
get
widget #hexpandSet
setWidgetHexpandSet :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “hexpand-set
” property.
When overloading is enabled, this is equivalent to
set
widget [ #hexpandSet:=
value ]
layoutManager
The GtkLayoutManager
instance to use to compute the preferred size
of the widget, and allocate its children.
This property is meant to be set by widget implementations, typically in their instance init function.
clearWidgetLayoutManager :: (MonadIO m, IsWidget o) => o -> m () Source #
Set the value of the “layout-manager
” property to Nothing
.
When overloading is enabled, this is equivalent to
clear
#layoutManager
constructWidgetLayoutManager :: (IsWidget o, MonadIO m, IsLayoutManager a) => a -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “layout-manager
” property. This is rarely needed directly, but it is used by new
.
getWidgetLayoutManager :: (MonadIO m, IsWidget o) => o -> m (Maybe LayoutManager) Source #
Get the value of the “layout-manager
” property.
When overloading is enabled, this is equivalent to
get
widget #layoutManager
setWidgetLayoutManager :: (MonadIO m, IsWidget o, IsLayoutManager a) => o -> a -> m () Source #
Set the value of the “layout-manager
” property.
When overloading is enabled, this is equivalent to
set
widget [ #layoutManager:=
value ]
marginBottom
Margin on bottom side of widget.
This property adds margin outside of the widget's normal size
request, the margin will be added in addition to the size from
widgetSetSizeRequest
for example.
constructWidgetMarginBottom :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “margin-bottom
” property. This is rarely needed directly, but it is used by new
.
getWidgetMarginBottom :: (MonadIO m, IsWidget o) => o -> m Int32 Source #
Get the value of the “margin-bottom
” property.
When overloading is enabled, this is equivalent to
get
widget #marginBottom
setWidgetMarginBottom :: (MonadIO m, IsWidget o) => o -> Int32 -> m () Source #
Set the value of the “margin-bottom
” property.
When overloading is enabled, this is equivalent to
set
widget [ #marginBottom:=
value ]
marginEnd
Margin on end of widget, horizontally.
This property supports left-to-right and right-to-left text directions.
This property adds margin outside of the widget's normal size
request, the margin will be added in addition to the size from
widgetSetSizeRequest
for example.
constructWidgetMarginEnd :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “margin-end
” property. This is rarely needed directly, but it is used by new
.
getWidgetMarginEnd :: (MonadIO m, IsWidget o) => o -> m Int32 Source #
Get the value of the “margin-end
” property.
When overloading is enabled, this is equivalent to
get
widget #marginEnd
setWidgetMarginEnd :: (MonadIO m, IsWidget o) => o -> Int32 -> m () Source #
Set the value of the “margin-end
” property.
When overloading is enabled, this is equivalent to
set
widget [ #marginEnd:=
value ]
marginStart
Margin on start of widget, horizontally.
This property supports left-to-right and right-to-left text directions.
This property adds margin outside of the widget's normal size
request, the margin will be added in addition to the size from
widgetSetSizeRequest
for example.
constructWidgetMarginStart :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “margin-start
” property. This is rarely needed directly, but it is used by new
.
getWidgetMarginStart :: (MonadIO m, IsWidget o) => o -> m Int32 Source #
Get the value of the “margin-start
” property.
When overloading is enabled, this is equivalent to
get
widget #marginStart
setWidgetMarginStart :: (MonadIO m, IsWidget o) => o -> Int32 -> m () Source #
Set the value of the “margin-start
” property.
When overloading is enabled, this is equivalent to
set
widget [ #marginStart:=
value ]
marginTop
Margin on top side of widget.
This property adds margin outside of the widget's normal size
request, the margin will be added in addition to the size from
widgetSetSizeRequest
for example.
constructWidgetMarginTop :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “margin-top
” property. This is rarely needed directly, but it is used by new
.
getWidgetMarginTop :: (MonadIO m, IsWidget o) => o -> m Int32 Source #
Get the value of the “margin-top
” property.
When overloading is enabled, this is equivalent to
get
widget #marginTop
setWidgetMarginTop :: (MonadIO m, IsWidget o) => o -> Int32 -> m () Source #
Set the value of the “margin-top
” property.
When overloading is enabled, this is equivalent to
set
widget [ #marginTop:=
value ]
name
The name of the widget.
constructWidgetName :: (IsWidget o, MonadIO m) => Text -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “name
” property. This is rarely needed directly, but it is used by new
.
getWidgetName :: (MonadIO m, IsWidget o) => o -> m Text Source #
Get the value of the “name
” property.
When overloading is enabled, this is equivalent to
get
widget #name
setWidgetName :: (MonadIO m, IsWidget o) => o -> Text -> m () Source #
Set the value of the “name
” property.
When overloading is enabled, this is equivalent to
set
widget [ #name:=
value ]
opacity
The requested opacity of the widget.
constructWidgetOpacity :: (IsWidget o, MonadIO m) => Double -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “opacity
” property. This is rarely needed directly, but it is used by new
.
getWidgetOpacity :: (MonadIO m, IsWidget o) => o -> m Double Source #
Get the value of the “opacity
” property.
When overloading is enabled, this is equivalent to
get
widget #opacity
setWidgetOpacity :: (MonadIO m, IsWidget o) => o -> Double -> m () Source #
Set the value of the “opacity
” property.
When overloading is enabled, this is equivalent to
set
widget [ #opacity:=
value ]
overflow
How content outside the widget's content area is treated.
This property is meant to be set by widget implementations, typically in their instance init function.
constructWidgetOverflow :: (IsWidget o, MonadIO m) => Overflow -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “overflow
” property. This is rarely needed directly, but it is used by new
.
getWidgetOverflow :: (MonadIO m, IsWidget o) => o -> m Overflow Source #
Get the value of the “overflow
” property.
When overloading is enabled, this is equivalent to
get
widget #overflow
setWidgetOverflow :: (MonadIO m, IsWidget o) => o -> Overflow -> m () Source #
Set the value of the “overflow
” property.
When overloading is enabled, this is equivalent to
set
widget [ #overflow:=
value ]
parent
The parent widget of this widget.
getWidgetParent :: (MonadIO m, IsWidget o) => o -> m (Maybe Widget) Source #
Get the value of the “parent
” property.
When overloading is enabled, this is equivalent to
get
widget #parent
receivesDefault
Whether the widget will receive the default action when it is focused.
constructWidgetReceivesDefault :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “receives-default
” property. This is rarely needed directly, but it is used by new
.
getWidgetReceivesDefault :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “receives-default
” property.
When overloading is enabled, this is equivalent to
get
widget #receivesDefault
setWidgetReceivesDefault :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “receives-default
” property.
When overloading is enabled, this is equivalent to
set
widget [ #receivesDefault:=
value ]
root
The GtkRoot
widget of the widget tree containing this widget.
This will be Nothing
if the widget is not contained in a root widget.
getWidgetRoot :: (MonadIO m, IsWidget o) => o -> m (Maybe Root) Source #
Get the value of the “root
” property.
When overloading is enabled, this is equivalent to
get
widget #root
scaleFactor
The scale factor of the widget.
getWidgetScaleFactor :: (MonadIO m, IsWidget o) => o -> m Int32 Source #
Get the value of the “scale-factor
” property.
When overloading is enabled, this is equivalent to
get
widget #scaleFactor
sensitive
Whether the widget responds to input.
constructWidgetSensitive :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “sensitive
” property. This is rarely needed directly, but it is used by new
.
getWidgetSensitive :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “sensitive
” property.
When overloading is enabled, this is equivalent to
get
widget #sensitive
setWidgetSensitive :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “sensitive
” property.
When overloading is enabled, this is equivalent to
set
widget [ #sensitive:=
value ]
tooltipMarkup
Sets the text of tooltip to be the given string, which is marked up with Pango markup.
Also see tooltipSetMarkup
.
This is a convenience property which will take care of getting the
tooltip shown if the given string is not Nothing
:
Widget:hasTooltip will automatically be set to True
and there will be taken care of Widget::queryTooltip in
the default signal handler.
Note that if both Widget:tooltipText and Widget:tooltipMarkup are set, the last one wins.
clearWidgetTooltipMarkup :: (MonadIO m, IsWidget o) => o -> m () Source #
Set the value of the “tooltip-markup
” property to Nothing
.
When overloading is enabled, this is equivalent to
clear
#tooltipMarkup
constructWidgetTooltipMarkup :: (IsWidget o, MonadIO m) => Text -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “tooltip-markup
” property. This is rarely needed directly, but it is used by new
.
getWidgetTooltipMarkup :: (MonadIO m, IsWidget o) => o -> m (Maybe Text) Source #
Get the value of the “tooltip-markup
” property.
When overloading is enabled, this is equivalent to
get
widget #tooltipMarkup
setWidgetTooltipMarkup :: (MonadIO m, IsWidget o) => o -> Text -> m () Source #
Set the value of the “tooltip-markup
” property.
When overloading is enabled, this is equivalent to
set
widget [ #tooltipMarkup:=
value ]
tooltipText
Sets the text of tooltip to be the given string.
Also see tooltipSetText
.
This is a convenience property which will take care of getting the
tooltip shown if the given string is not Nothing
:
Widget:hasTooltip will automatically be set to True
and there will be taken care of Widget::queryTooltip in
the default signal handler.
Note that if both Widget:tooltipText and Widget:tooltipMarkup are set, the last one wins.
clearWidgetTooltipText :: (MonadIO m, IsWidget o) => o -> m () Source #
Set the value of the “tooltip-text
” property to Nothing
.
When overloading is enabled, this is equivalent to
clear
#tooltipText
constructWidgetTooltipText :: (IsWidget o, MonadIO m) => Text -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “tooltip-text
” property. This is rarely needed directly, but it is used by new
.
getWidgetTooltipText :: (MonadIO m, IsWidget o) => o -> m (Maybe Text) Source #
Get the value of the “tooltip-text
” property.
When overloading is enabled, this is equivalent to
get
widget #tooltipText
setWidgetTooltipText :: (MonadIO m, IsWidget o) => o -> Text -> m () Source #
Set the value of the “tooltip-text
” property.
When overloading is enabled, this is equivalent to
set
widget [ #tooltipText:=
value ]
valign
How to distribute vertical space if widget gets extra space.
constructWidgetValign :: (IsWidget o, MonadIO m) => Align -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “valign
” property. This is rarely needed directly, but it is used by new
.
getWidgetValign :: (MonadIO m, IsWidget o) => o -> m Align Source #
Get the value of the “valign
” property.
When overloading is enabled, this is equivalent to
get
widget #valign
setWidgetValign :: (MonadIO m, IsWidget o) => o -> Align -> m () Source #
Set the value of the “valign
” property.
When overloading is enabled, this is equivalent to
set
widget [ #valign:=
value ]
vexpand
Whether to expand vertically.
constructWidgetVexpand :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “vexpand
” property. This is rarely needed directly, but it is used by new
.
getWidgetVexpand :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “vexpand
” property.
When overloading is enabled, this is equivalent to
get
widget #vexpand
setWidgetVexpand :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “vexpand
” property.
When overloading is enabled, this is equivalent to
set
widget [ #vexpand:=
value ]
vexpandSet
Whether to use the vexpand
property.
constructWidgetVexpandSet :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “vexpand-set
” property. This is rarely needed directly, but it is used by new
.
getWidgetVexpandSet :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “vexpand-set
” property.
When overloading is enabled, this is equivalent to
get
widget #vexpandSet
setWidgetVexpandSet :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “vexpand-set
” property.
When overloading is enabled, this is equivalent to
set
widget [ #vexpandSet:=
value ]
visible
Whether the widget is visible.
constructWidgetVisible :: (IsWidget o, MonadIO m) => Bool -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “visible
” property. This is rarely needed directly, but it is used by new
.
getWidgetVisible :: (MonadIO m, IsWidget o) => o -> m Bool Source #
Get the value of the “visible
” property.
When overloading is enabled, this is equivalent to
get
widget #visible
setWidgetVisible :: (MonadIO m, IsWidget o) => o -> Bool -> m () Source #
Set the value of the “visible
” property.
When overloading is enabled, this is equivalent to
set
widget [ #visible:=
value ]
widthRequest
Override for width request of the widget.
If this is -1, the natural request will be used.
constructWidgetWidthRequest :: (IsWidget o, MonadIO m) => Int32 -> m (GValueConstruct o) Source #
Construct a GValueConstruct
with valid value for the “width-request
” property. This is rarely needed directly, but it is used by new
.
getWidgetWidthRequest :: (MonadIO m, IsWidget o) => o -> m Int32 Source #
Get the value of the “width-request
” property.
When overloading is enabled, this is equivalent to
get
widget #widthRequest
setWidgetWidthRequest :: (MonadIO m, IsWidget o) => o -> Int32 -> m () Source #
Set the value of the “width-request
” property.
When overloading is enabled, this is equivalent to
set
widget [ #widthRequest:=
value ]
Signals
destroy
type WidgetDestroyCallback = IO () Source #
Signals that all holders of a reference to the widget should release the reference that they hold.
May result in finalization of the widget if all references are released.
This signal is not suitable for saving widget state.
afterWidgetDestroy :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetDestroyCallback) -> m SignalHandlerId Source #
Connect a signal handler for the destroy signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #destroy callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetDestroy :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetDestroyCallback) -> m SignalHandlerId Source #
Connect a signal handler for the destroy signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #destroy callback
directionChanged
type WidgetDirectionChangedCallback Source #
= TextDirection |
|
-> IO () |
Emitted when the text direction of a widget changes.
afterWidgetDirectionChanged :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetDirectionChangedCallback) -> m SignalHandlerId Source #
Connect a signal handler for the directionChanged signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #directionChanged callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetDirectionChanged :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetDirectionChangedCallback) -> m SignalHandlerId Source #
Connect a signal handler for the directionChanged signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #directionChanged callback
hide
type WidgetHideCallback = IO () Source #
Emitted when widget
is hidden.
afterWidgetHide :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetHideCallback) -> m SignalHandlerId Source #
Connect a signal handler for the hide signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #hide callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetHide :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetHideCallback) -> m SignalHandlerId Source #
Connect a signal handler for the hide signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #hide callback
keynavFailed
type WidgetKeynavFailedCallback Source #
= DirectionType |
|
-> IO Bool | Returns: |
Emitted if keyboard navigation fails.
See widgetKeynavFailed
for details.
afterWidgetKeynavFailed :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetKeynavFailedCallback) -> m SignalHandlerId Source #
Connect a signal handler for the keynavFailed signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #keynavFailed callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetKeynavFailed :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetKeynavFailedCallback) -> m SignalHandlerId Source #
Connect a signal handler for the keynavFailed signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #keynavFailed callback
map
type WidgetMapCallback = IO () Source #
Emitted when widget
is going to be mapped.
A widget is mapped when the widget is visible (which is controlled with Widget:visible) and all its parents up to the toplevel widget are also visible.
The map signal can be used to determine whether a widget will be drawn, for instance it can resume an animation that was stopped during the emission of Widget::unmap.
afterWidgetMap :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMapCallback) -> m SignalHandlerId Source #
Connect a signal handler for the map signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #map callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetMap :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMapCallback) -> m SignalHandlerId Source #
Connect a signal handler for the map signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #map callback
mnemonicActivate
afterWidgetMnemonicActivate :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMnemonicActivateCallback) -> m SignalHandlerId Source #
Connect a signal handler for the mnemonicActivate signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #mnemonicActivate callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetMnemonicActivate :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMnemonicActivateCallback) -> m SignalHandlerId Source #
Connect a signal handler for the mnemonicActivate signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #mnemonicActivate callback
moveFocus
type WidgetMoveFocusCallback Source #
= DirectionType |
|
-> IO () |
Emitted when the focus is moved.
afterWidgetMoveFocus :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMoveFocusCallback) -> m SignalHandlerId Source #
Connect a signal handler for the moveFocus signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #moveFocus callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetMoveFocus :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetMoveFocusCallback) -> m SignalHandlerId Source #
Connect a signal handler for the moveFocus signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #moveFocus callback
queryTooltip
type WidgetQueryTooltipCallback Source #
= Int32 |
|
-> Int32 |
|
-> Bool |
|
-> Tooltip |
|
-> IO Bool | Returns: |
Emitted when the widgets tooltip is about to be shown.
This happens when the Widget:hasTooltip property
is True
and the hover timeout has expired with the cursor hovering
"above" widget
; or emitted when widget
got focus in keyboard mode.
Using the given coordinates, the signal handler should determine
whether a tooltip should be shown for widget
. If this is the case
True
should be returned, False
otherwise. Note that if
keyboardMode
is True
, the values of x
and y
are undefined and
should not be used.
The signal handler is free to manipulate tooltip
with the therefore
destined function calls.
afterWidgetQueryTooltip :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetQueryTooltipCallback) -> m SignalHandlerId Source #
Connect a signal handler for the queryTooltip signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #queryTooltip callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetQueryTooltip :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetQueryTooltipCallback) -> m SignalHandlerId Source #
Connect a signal handler for the queryTooltip signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #queryTooltip callback
realize
type WidgetRealizeCallback = IO () Source #
Emitted when widget
is associated with a GdkSurface
.
This means that widgetRealize
has been called
or the widget has been mapped (that is, it is going to be drawn).
afterWidgetRealize :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetRealizeCallback) -> m SignalHandlerId Source #
Connect a signal handler for the realize signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #realize callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetRealize :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetRealizeCallback) -> m SignalHandlerId Source #
Connect a signal handler for the realize signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #realize callback
show
type WidgetShowCallback = IO () Source #
Emitted when widget
is shown.
afterWidgetShow :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetShowCallback) -> m SignalHandlerId Source #
Connect a signal handler for the show signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #show callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetShow :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetShowCallback) -> m SignalHandlerId Source #
Connect a signal handler for the show signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #show callback
stateFlagsChanged
type WidgetStateFlagsChangedCallback Source #
= [StateFlags] |
|
-> IO () |
Emitted when the widget state changes.
See widgetGetStateFlags
.
afterWidgetStateFlagsChanged :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetStateFlagsChangedCallback) -> m SignalHandlerId Source #
Connect a signal handler for the stateFlagsChanged signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #stateFlagsChanged callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetStateFlagsChanged :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetStateFlagsChangedCallback) -> m SignalHandlerId Source #
Connect a signal handler for the stateFlagsChanged signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #stateFlagsChanged callback
unmap
type WidgetUnmapCallback = IO () Source #
Emitted when widget
is going to be unmapped.
A widget is unmapped when either it or any of its parents up to the toplevel widget have been set as hidden.
As unmap indicates that a widget will not be shown any longer, it can be used to, for example, stop an animation on the widget.
afterWidgetUnmap :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetUnmapCallback) -> m SignalHandlerId Source #
Connect a signal handler for the unmap signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #unmap callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetUnmap :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetUnmapCallback) -> m SignalHandlerId Source #
Connect a signal handler for the unmap signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #unmap callback
unrealize
type WidgetUnrealizeCallback = IO () Source #
Emitted when the GdkSurface
associated with widget
is destroyed.
This means that widgetUnrealize
has been called
or the widget has been unmapped (that is, it is going to be hidden).
afterWidgetUnrealize :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetUnrealizeCallback) -> m SignalHandlerId Source #
Connect a signal handler for the unrealize signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after
widget #unrealize callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self
parameter.
Note that this requires activating the ImplicitParams
GHC extension.
onWidgetUnrealize :: (IsWidget a, MonadIO m) => a -> ((?self :: a) => WidgetUnrealizeCallback) -> m SignalHandlerId Source #
Connect a signal handler for the unrealize signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on
widget #unrealize callback