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The Power in your Hands |
PaintContext Class Reference
#include <Pt/Gfx/PaintContext.h>
Active painting session for a surface. More...
Inherits NonCopyable.
Inherited by PaintContext.
Public Member Functions | |
| PaintContext (PaintSurface &surface) | |
| Constructs a context using the paint surface. | |
| PaintContext (PaintSurface &surface, const RectF &clip) | |
| Constructs a context using the paint surface and an initial clip rect. | |
| virtual | ~PaintContext () |
| Destructor. | |
| const Gfx::ImageFormat & | format () const |
| Returns the image format. | |
| const Gfx::SizeF & | size () const |
| Returns the size in physical pixels. | |
| const Scaling & | scaling () const |
| Returns the scaling from logical to physical pixels. | |
| const RectF * | clip () const |
| Returns the default clip rect or null if clipping is disabled. | |
| void | setClip (const RectF &clip) |
| Sets the default clip rect for painters on this context. | |
| void | resetClip () |
| Resets the default clip rect. | |
| Canvas * | getCanvas (Canvas *canvas) |
| Returns a canvas for backend drawing. | |
| void | sync () |
| Synchronizes pending drawing operations. | |
| void | finish () |
| Finishes painting on the surface. | |
Protected Member Functions | |
| virtual void | onDetachSurface (PaintSurface &surface) |
| Handles detachment from the surface. | |
Detailed Description
PaintContext represents a prepared drawing session on a PaintSurface. It exposes target properties, provides access to a backend canvas and keeps painter and surface lifetime in sync while painting is active.