gi-atk-2.0.21: Atk bindings

CopyrightWill Thompson Iñaki García Etxebarria and Jonas Platte
LicenseLGPL-2.1
MaintainerIñaki García Etxebarria
Safe HaskellNone
LanguageHaskell2010

GI.Atk.Interfaces.Image

Contents

Description

tImage should be implemented by tObject subtypes on behalf of components which display image/pixmap information onscreen, and which provide information (other than just widget borders, etc.) via that image content. For instance, icons, buttons with icons, toolbar elements, and image viewing panes typically should implement tImage.

tImage primarily provides two types of information: coordinate information (useful for screen review mode of screenreaders, and for use by onscreen magnifiers), and descriptive information. The descriptive information is provided for alternative, text-only presentation of the most significant information present in the image.

Synopsis

Exported types

newtype Image Source #

Memory-managed wrapper type.

Constructors

Image (ManagedPtr Image) 
Instances
Eq Image Source # 
Instance details

Defined in GI.Atk.Interfaces.Image

Methods

(==) :: Image -> Image -> Bool

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

WrappedPtr Image Source # 
Instance details

Defined in GI.Atk.Interfaces.Image

Methods

wrappedPtrCalloc :: IO (Ptr Image)

wrappedPtrCopy :: Image -> IO Image

wrappedPtrFree :: Maybe (GDestroyNotify Image)

noImage :: Maybe Image Source #

A convenience alias for Nothing :: Maybe Image.

class (ManagedPtrNewtype o, IsDescendantOf Image o) => IsImage o Source #

Type class for types which implement Image.

Instances
(ManagedPtrNewtype o, IsDescendantOf Image o) => IsImage o Source # 
Instance details

Defined in GI.Atk.Interfaces.Image

Methods

Overloaded methods

getImageDescription

imageGetImageDescription Source #

Arguments

:: (HasCallStack, MonadIO m, IsImage a) 
=> a

image: a tObject instance that implements AtkImageIface

-> m Text

Returns: a string representing the image description

Get a textual description of this image.

getImageLocale

imageGetImageLocale Source #

Arguments

:: (HasCallStack, MonadIO m, IsImage a) 
=> a

image: An tImage

-> m (Maybe Text)

Returns: a string corresponding to the POSIX LC_MESSAGES locale used by the image description, or Nothing if the image does not specify a locale.

Retrieves the locale identifier associated to the tImage.

Since: 1.12

getImagePosition

imageGetImagePosition Source #

Arguments

:: (HasCallStack, MonadIO m, IsImage a) 
=> a

image: a tObject instance that implements AtkImageIface

-> CoordType

coordType: specifies whether the coordinates are relative to the screen or to the components top level window

-> m (Int32, Int32) 

Gets the position of the image in the form of a point specifying the images top-left corner.

If the position can not be obtained (e.g. missing support), x and y are set to -1.

getImageSize

imageGetImageSize Source #

Arguments

:: (HasCallStack, MonadIO m, IsImage a) 
=> a

image: a tObject instance that implements AtkImageIface

-> m (Int32, Int32) 

Get the width and height in pixels for the specified image. The values of width and height are returned as -1 if the values cannot be obtained (for instance, if the object is not onscreen).

If the size can not be obtained (e.g. missing support), x and y are set to -1.

setImageDescription

imageSetImageDescription Source #

Arguments

:: (HasCallStack, MonadIO m, IsImage a) 
=> a

image: a tObject instance that implements AtkImageIface

-> Text

description: a string description to set for image

-> m Bool

Returns: boolean TRUE, or FALSE if operation could not be completed.

Sets the textual description for this image.