Safe Haskell	None
Language	Haskell98

HTk.Components.Image

Description

This module provides access to image resources from files or base64 encoded strings.

Synopsis

Documentation

class GUIObject w => HasPhoto w where Source #

Image containers instantiate the class HasPhoto.

Methods

photo :: Image -> Config w Source #

getPhoto :: w -> IO (Maybe Image) Source #

Instances

HasPhoto MenuCascade Source #	A menu cascade item can contain an image (instead of text or a bitmap).
Methods photo :: Image -> Config MenuCascade Source # getPhoto :: MenuCascade -> IO (Maybe Image) Source #
HasPhoto MenuCheckButton Source #	A menu checkbutton can contain an image (instead of text or a bitmap).
Methods photo :: Image -> Config MenuCheckButton Source # getPhoto :: MenuCheckButton -> IO (Maybe Image) Source #
HasPhoto MenuCommand Source #	A menu command can contain an image (instead of text or a bitmap).
Methods photo :: Image -> Config MenuCommand Source # getPhoto :: MenuCommand -> IO (Maybe Image) Source #
HasPhoto MenuRadioButton Source #	You can specify the size of a menu radiobutton.
Methods photo :: Image -> Config MenuRadioButton Source # getPhoto :: MenuRadioButton -> IO (Maybe Image) Source #
HasPhoto Button Source #	A button can contain an image.
Methods photo :: Image -> Config Button Source # getPhoto :: Button -> IO (Maybe Image) Source #
HasPhoto Label Source #	A label can contain an image.
Methods photo :: Image -> Config Label Source # getPhoto :: Label -> IO (Maybe Image) Source #
HasPhoto MenuButton Source #	A menubutton can contain an image.
Methods photo :: Image -> Config MenuButton Source # getPhoto :: MenuButton -> IO (Maybe Image) Source #
HasPhoto ImageItem Source #	An image item is a container for an image object.
Methods photo :: Image -> Config ImageItem Source # getPhoto :: ImageItem -> IO (Maybe Image) Source #
(HasIndicator w, SelectButton w) => HasPhoto (Indicator w) Source #	You can specify specify an alternate image for the selector of menu checkbuttons and menu radiobuttons.
Methods photo :: Image -> Config (Indicator w) Source # getPhoto :: Indicator w -> IO (Maybe Image) Source #
HasPhoto (CheckButton a) Source #	A checkbutton can contain an image.
Methods photo :: Image -> Config (CheckButton a) Source # getPhoto :: CheckButton a -> IO (Maybe Image) Source #
HasPhoto (RadioButton a) Source #	A radiobutton can contain an image.
Methods photo :: Image -> Config (RadioButton a) Source # getPhoto :: RadioButton a -> IO (Maybe Image) Source #
HasPhoto (Dialog a) Source #	A dialog can have an image
Methods photo :: Image -> Config (Dialog a) Source # getPhoto :: Dialog a -> IO (Maybe Image) Source #

data Image Source #

The Image datatype.

Instances

Eq Image Source #
Methods (==) :: Image -> Image -> Bool # (/=) :: Image -> Image -> Bool #
Destroyable Image Source #	An image object can be destroyed.
Methods destroy :: Image -> IO () #
Synchronized Image Source #	You can synchronize on an image object.
Methods synchronize :: Image -> IO b -> IO b #
GUIObject Image Source #	Internal.
Methods toGUIObject :: Image -> GUIOBJECT Source # cname :: Image -> String Source # cset :: GUIValue a => Image -> ConfigID -> a -> IO Image Source # cget :: GUIValue a => Image -> ConfigID -> IO a Source #
HasFile Image Source #	Images can be read from files.
Methods filename :: String -> Config Image Source # getFileName :: Image -> IO String Source #
HasBorder Image Source #	An image object has a configureable border (if implicitely displayed inside a label widget).
Methods borderwidth :: Distance -> Config Image Source # getBorderwidth :: Image -> IO Distance Source # relief :: Relief -> Config Image Source # getRelief :: Image -> IO Relief Source #
HasSize Image Source #	You can specify the size of the containing label, if the image is implicitely displayed inside a label widget.
Methods width :: Distance -> Config Image Source # getWidth :: Image -> IO Distance Source # height :: Distance -> Config Image Source # getHeight :: Image -> IO Distance Source # size :: Size -> Config Image Source # getSize :: Image -> IO Size Source #
HasColour Image Source #	An image object has a configureable foreground and background colour (if implicitely displayed inside a label widget).
Methods legalColourID :: Image -> ConfigID -> Bool Source # setColour :: Image -> ConfigID -> Colour -> IO Image Source # getColour :: Image -> ConfigID -> IO Colour Source #
Widget Image Source #	An image object has standard widget properties (concerning focus, cursor / if implicitely displayed inside a label widget).
Methods cursor :: CursorDesignator ch => ch -> Config Image Source # getCursor :: Image -> IO Cursor Source # takeFocus :: Bool -> Config Image Source # getTakeFocus :: Image -> IO Bool Source #
FormLabel Image Source #
Methods formLabel :: Frame -> Image -> IO (IO ()) Source #

newImage Source #

Arguments

:: [Config Image]	the list of configuration options for this image object.
-> IO Image	An image object.

Constructs a new image object and returns a handler. The image object can be packed like a widget, then it is implicitely displayed inside a label widget.

intToImage :: Int -> IO (Maybe Image) Source #

Internal.

imageToInt :: Image -> IO Int Source #

Internal.

data Format Source #

The Format datatype - represents the format of a base64 encoded image (see Image.imgData).

Constructors

GIF
PPM
PGM

imgData :: Format -> String -> Config Image Source #

Sets the image data from a base64 encoded string.

imgGamma :: Double -> Config Image Source #

The gamma correction factor. Values less than one darken the image, values greater than one brighten up the image.

imgPalette :: PaletteSpec p => p -> Config Image Source #