UIBufferedElementRaw

Extending the UIElement with an owned drawing buffer. This is intended to have easier dirtyrect-compliant widgets. Also caches expensive drawing, but it's not free at all.

No less than three additional opacity channels must be filled to be able to blend the widgets explicitely. The semantic of the opacity channels are: opacity left at 0 => pixel untouched opacity > 0 => pixel is touched, blending will occur

class UIBufferedElementRaw : UIElement {

this(UIContext context, uint flags);

~this();

void doNotClearBuffers();

void setDirty(box2i rect, UILayer layer);

void setDirtyWhole(UILayer layer);

void onDrawRaw(ImageRef!RGBA rawMap, box2i[] dirtyRects);

void onDrawBufferedRaw(ImageRef!RGBA rawMap, ImageRef!L8 opacity);

}

Constructors

this this(UIContext context, uint flags): Undocumented in source.

Destructor

~this ~this(): Undocumented in source.

Members

Functions

doNotClearBuffers void doNotClearBuffers(): Does not initialize buffers. onDrawBufferedRaw will be returned the same content, unless the buffer size has changed. This is needed for widgets might want their own Raw and Opacity buffer to stay unchanged, if their size didn't change. This is typically an optimization.
onDrawBufferedRaw void onDrawBufferedRaw(ImageRef!RGBA rawMap, ImageRef!L8 opacity): Redraws the whole widget without consideration for drawing only in dirty rects.
onDrawRaw void onDrawRaw(ImageRef!RGBA rawMap, box2i[] dirtyRects): Undocumented in source. Be warned that the author may not have intended to support it.
setDirty void setDirty(box2i rect, UILayer layer): Undocumented in source. Be warned that the author may not have intended to support it.
setDirtyWhole void setDirtyWhole(UILayer layer): Undocumented in source. Be warned that the author may not have intended to support it.

UIBufferedElementRaw

Constructors

Destructor

Members

Functions

Meta

Source