Constructor.

Destructor.

Adds buffer that contains more canvas drawing commands, those will be executed after the buffers that has been added previously.

Constructs and appends a new Canvas visual to the owner control.

Adds partial buffer that contains more canvas drawing commands. These commands are appended to the commands set previously with this method until param aLastPart has value ETrue. After that whole command set will be added among possibly already existing command sets and it will be drawable.

Gets canvas flags

Gets reference to canvas gc

From CHuiVisual

New virtual method. Determines the position of a child visual according to the layout. The child position is determined using the base units of the layout. Derived layout classes should refer to InnerSize() and InnerTopLeft() to determine the area suitable for placing children into.

New virtual method. Determines the position and size of a child visual according to the layout. The child position is determined using the base units of the layout. Derived layout classes should refer to InnerSize() and InnerTopLeft() to determine the area suitable for placing children into.

New virtual method. Determines the size of a child visual according to the layout. The child size is determined using the base units of the layout. Derived layout classes should refer to InnerSize() and InnerTopLeft() to determine the area suitable for placing children into.

Clears internal cached texts and images.

Clears canvas flags

From CHuiVisual

Clears buffer(s) that contains canvas drawing commands.

Second-phase constructor.

From CHuiVisual . Draws (renders) this layout.

The default implementataion applies transformations (affects the positions of the layout), draws brushes and of course children.

Layout clipping is not affected by transformation.

TodoClipping doesn't work if there is a transformation? No need to draw children that won't be visible.

Draw the visual.

Expands the dirty region of the visual depending on the content of the visual. This includes any brushes attached to the visual. Used during dirty region reporting.

Return external content visual of the canvas visual. NULL return value means there is no external content.

Returns true if shape is different than display rect.

Returns information of the painted area at given index.

PaintedAreaCount() ()

Returns the number of rectangular areas which contain something that is drawn by the visual.

PaintedArea()

Prepares internal cached texts and images.

From CHuiVisual . Prepares all children of this layout for drawing. The preparation is done in drawing order.

Actually this default implementation is not leaving, since it traps the prepare errors inside and handles the errors by calling the visual owners "prepare draw failed" -callback.

MHuiVisualOwner::VisualPrepareDrawFailed()

Sets the background color, if background clearing has been enabled.

SetClearBackgroundL()

Sets the items that specify how to clear display before display refresh. Items may have overlapping rectangles, drawing order is same as item order in the parameter array. But having lots of overlapping drawing causes negative performance impact.

This method is alternative to SetClearBackgroundL and SetBackgroundColor methods.

SetBackgroundColor() SetClearBackgroundL()

Sets canvas flags

Draws content of the window in pixel format to the given bitmap. This method may not be supported in all commanbuffertype/renderer combinations.

Raises the change flag for this visual. Visual will be updated as soon as possible.

Sets the flag that tells the canvas to clear the background before doing a refresh.

Note1: EClearWithSkinBackground is not (yet) supported. Note2: EClearWithColor does not do alphablending, it just clears the area and writes alpha values to the rendering surface.

SetBackgroundColor()

Sets buffer that contains canvas drawing commands. This method clears previous buffer(s).

Sets the type of commands in the buffer.

Set external content visual to be drawn to the canvas visual. Giving a NULL pointer as a parameter removes the external content.

Set parent canvas visual. Parent is used for determining clipping region incase canvasflag EHuiCanvasFlagEnableCanvasClipping is set.

Sets shape. This affects only visible area calculation.

From CHuiVisual . Change the size of the layout. Children's positions and sizes are updated accordingly. Each layout class is responsible for determining how to update children's layout.

Returns origin of window shape.

Returns shape as region.

! From HuiVisual