SkAutoCanvasRestore Class Reference

#include <SkCanvas.h>

Public Member Functions
	SkAutoCanvasRestore (SkCanvas *canvas, bool doSave)
	~SkAutoCanvasRestore ()
void	restore ()

Detailed Description

Stack helper class calls SkCanvas::restoreToCount when SkAutoCanvasRestore goes out of scope. Use this to guarantee that the canvas is restored to a known state.

Definition at line 2639 of file SkCanvas.h.

Constructor & Destructor Documentation

SkAutoCanvasRestore()

SkAutoCanvasRestore::SkAutoCanvasRestore ( SkCanvas *  canvas, bool  doSave  )

inline

Preserves SkCanvas::save() count. Optionally saves SkCanvas clip and SkCanvas matrix.

Parameters

canvas	SkCanvas to guard
doSave	call SkCanvas::save()

Returns

utility to restore SkCanvas state on destructor

Definition at line 2648 of file SkCanvas.h.

                                                       : fCanvas(canvas), fSaveCount(0) {
        if (fCanvas) {
            fSaveCount = canvas->getSaveCount();
            if (doSave) {
                canvas->save();
            }
        }
    }

~SkAutoCanvasRestore()

SkAutoCanvasRestore::~SkAutoCanvasRestore ( )

inline

Restores SkCanvas to saved state. Destructor is called when container goes out of scope.

Definition at line 2660 of file SkCanvas.h.

                           {
        if (fCanvas) {
            fCanvas->restoreToCount(fSaveCount);
        }
    }

Member Function Documentation

restore()

void SkAutoCanvasRestore::restore ( )

inline

Restores SkCanvas to saved state immediately. Subsequent calls and ~SkAutoCanvasRestore() have no effect.

Definition at line 2669 of file SkCanvas.h.

                   {
        if (fCanvas) {
            fCanvas->restoreToCount(fSaveCount);
            fCanvas = nullptr;
        }
    }

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The documentation for this class was generated from the following file:

• third_party/skia/include/core/SkCanvas.h