Memory-managed wrapper type.

Type class for types which can be safely cast to CairoTexture, for instance with toCairoTexture.

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

Clears self's internal drawing surface, so that the next upload will replace the previous contents of the CairoTexture rather than adding to it.

Calling this function from within a CairoTexture::draw signal handler will clear the invalidated area.

Since: 1.0

Creates a new Cairo context for the cairo texture. It is similar to using cairoTextureCreateRegion with xOffset and yOffset of 0, width equal to the cairo texture surface width and height equal to the cairo texture surface height.

Do not call this function within the paint virtual function or from a callback to the Actor::paint signal.

Since: 1.0

Creates a new Cairo context that will updat the region defined by xOffset, yOffset, width and height.

Do not call this function within the paint virtual function or from a callback to the Actor::paint signal.

Since: 1.0

Retrieves the value set using cairoTextureSetAutoResize.

Since: 1.8

Retrieves the surface width and height for self.

Since: 1.0

Invalidates the whole surface of a CairoTexture.

This function will cause the CairoTexture::draw signal to be emitted.

See also: cairoTextureInvalidateRectangle

Since: 1.8

Invalidates a rectangular region of a CairoTexture.

The invalidation will cause the CairoTexture::draw signal to be emitted.

See also: cairoTextureInvalidate

Since: 1.8

Creates a new CairoTexture actor, with a surface of width by height pixels.

Since: 1.0

Sets whether the CairoTexture should ensure that the backing Cairo surface used matches the allocation assigned to the actor. If the allocation changes, the contents of the CairoTexture will also be invalidated automatically.

Since: 1.8

Resizes the Cairo surface used by self to width and height.

This function will not invalidate the contents of the Cairo texture: you will have to explicitly call either cairoTextureInvalidateRectangle or cairoTextureInvalidate.

Since: 1.0

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

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

get cairoTexture #autoResize

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

set cairoTexture [ #autoResize := value ]

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

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

get cairoTexture #surfaceHeight

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

set cairoTexture [ #surfaceHeight := value ]

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

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

get cairoTexture #surfaceWidth

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

set cairoTexture [ #surfaceWidth := value ]

The createSurface signal is emitted when a CairoTexture news its surface (re)created, which happens either when the Cairo context is created with cairoTextureCreate or cairoTextureCreateRegion, or when the surface is resized through cairoTextureSetSurfaceSize.

The first signal handler that returns a non-Nothing, valid surface will stop any further signal emission, and the returned surface will be the one used.

Since: 1.6

Connect a signal handler for the createSurface signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after cairoTexture #createSurface 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.

Connect a signal handler for the createSurface signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on cairoTexture #createSurface callback

The draw signal is emitted each time a CairoTexture has been invalidated.

The passed Cairo context passed will be clipped to the invalidated area.

It is safe to connect multiple callbacks to this signals; the state of the Cairo context passed to each callback is automatically saved and restored, so it's not necessary to call cairo_save() and cairo_restore().

Since: 1.8

Connect a signal handler for the draw signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after cairoTexture #draw 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.

Connect a signal handler for the draw signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on cairoTexture #draw callback