GI.Gtk.Objects.DragIcon

GtkDragIcon is a Root implementation with the sole purpose to serve as a drag icon during DND operations. A drag icon moves with the pointer during a drag operation and is destroyed when the drag ends.

To set up a drag icon and associate it with an ongoing drag operation, use dragIconGetForDrag to get the icon for a drag. You can then use it like any other widget and use dragIconSetChild to set whatever widget should be used for the drag icon.

Keep in mind that drag icons do not allow user input.

Exported types

newtype DragIcon

Memory-managed wrapper type.

Constructors

DragIcon (ManagedPtr DragIcon)

Instances

Eq DragIcon

Defined in GI.Gtk.Objects.DragIcon

Methods

(==) :: DragIcon -> DragIcon -> Bool

(/=) :: DragIcon -> DragIcon -> Bool

GObject DragIcon

Defined in GI.Gtk.Objects.DragIcon

ManagedPtrNewtype DragIcon

Defined in GI.Gtk.Objects.DragIcon

Methods

toManagedPtr :: DragIcon -> ManagedPtr DragIcon

TypedObject DragIcon

Defined in GI.Gtk.Objects.DragIcon

Methods

glibType :: IO GType

HasParentTypes DragIcon

Defined in GI.Gtk.Objects.DragIcon

IsGValue (Maybe DragIcon)

Convert DragIcon to and from GValue. See toGValue and fromGValue.

Defined in GI.Gtk.Objects.DragIcon

Methods

gvalueGType_ :: IO GType

gvalueSet_ :: Ptr GValue -> Maybe DragIcon -> IO ()

gvalueGet_ :: Ptr GValue -> IO (Maybe DragIcon)

type ParentTypes DragIcon

Defined in GI.Gtk.Objects.DragIcon

type ParentTypes DragIcon = '[Widget, Object, Accessible, Buildable, ConstraintTarget, Native, Root]

class (GObject o, IsDescendantOf DragIcon o) => IsDragIcon o

Type class for types which can be safely cast to DragIcon, for instance with toDragIcon.

Instances

(GObject o, IsDescendantOf DragIcon o) => IsDragIcon o

Defined in GI.Gtk.Objects.DragIcon

toDragIcon :: (MonadIO m, IsDragIcon o) => o -> m DragIcon

Cast to DragIcon, for types for which this is known to be safe. For general casts, use castTo.

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, getChild, getChildVisible, getClipboard, getCssClasses, getCssName, getCursor, getData, getDirection, getDisplay, getFirstChild, getFocus, 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, getRenderer, getRequestMode, getRoot, getScaleFactor, getSensitive, getSettings, getSize, getSizeRequest, getStateFlags, getStyleContext, getSurface, getSurfaceTransform, getTemplateChild, getTooltipMarkup, getTooltipText, getValign, getVexpand, getVexpandSet, getVisible, getWidth.

Setters

setCanFocus, setCanTarget, setChild, setChildVisible, setCssClasses, setCursor, setCursorFromName, setData, setDataFull, setDirection, setFocus, 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.

createWidgetForValue

dragIconCreateWidgetForValue

Arguments

:: (HasCallStack, MonadIO m)

=> GValue

value: a Value

-> m (Maybe Widget)

Returns: A new Widget for displaying value as a drag icon.

Creates a widget that can be used as a drag icon for the given value.

Supported types include strings, RGBA and TextBuffer. If GTK does not know how to create a widget for a given value, it will return Nothing.

This method is used to set the default drag icon on drag'n'drop operations started by DragSource, so you don't need to set a drag icon using this function there.

getChild

dragIconGetChild

Arguments

:: (HasCallStack, MonadIO m, IsDragIcon a)

=> a

self: a DragIcon

-> m (Maybe Widget)

Returns: The drag icon or Nothing if none.

Gets the widget currently used as drag icon.

getForDrag

dragIconGetForDrag

Arguments

:: (HasCallStack, MonadIO m, IsDrag a)

=> a

drag: a Drag

-> m Widget

Returns: the DragIcon

Gets the DragIcon in use with drag.

If no drag icon exists yet, a new one will be created and shown.

setChild

dragIconSetChild

Arguments

:: (HasCallStack, MonadIO m, IsDragIcon a, IsWidget b)

=> a

self: a DragIcon

-> Maybe b

child: a Widget or Nothing

-> m ()

Sets the widget to display as the drag icon.

setFromPaintable

dragIconSetFromPaintable

Arguments

:: (HasCallStack, MonadIO m, IsDrag a, IsPaintable b)

=> a

drag: a Drag

-> b

paintable: a Paintable to display

-> Int32

hotX: X coordinate of the hotspot

-> Int32

hotY: Y coordinate of the hotspot

-> m ()

Creates a DragIcon that shows paintable, and associates it with the drag operation. The hotspot position on the paintable is aligned with the hotspot of the cursor.

Properties

child

The widget to display as drag icon.

clearDragIconChild :: (MonadIO m, IsDragIcon o) => o -> m ()

Set the value of the “child” property to Nothing. When overloading is enabled, this is equivalent to

clear #child

constructDragIconChild :: (IsDragIcon o, MonadIO m, IsWidget a) => a -> m (GValueConstruct o)

Construct a GValueConstruct with valid value for the “child” property. This is rarely needed directly, but it is used by new.

getDragIconChild :: (MonadIO m, IsDragIcon o) => o -> m (Maybe Widget)

Get the value of the “child” property. When overloading is enabled, this is equivalent to

get dragIcon #child

setDragIconChild :: (MonadIO m, IsDragIcon o, IsWidget a) => o -> a -> m ()

Set the value of the “child” property. When overloading is enabled, this is equivalent to

set dragIcon [ #child := value ]