SkAutoCanvasRestore Reference

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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.

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

Parameters

Return Value

utility to restore SkCanvas state on destructor

Example

See Also

SkCanvas::save SkCanvas::restore

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

See Also

SkCanvas::save SkCanvas::restore

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

Example

Example Output

saveCanvas: false  before restore: 2
saveCanvas: false  after restore: 2
saveCanvas: true  before restore: 2
saveCanvas: true  after restore: 2
saveCanvas: false  before restore: 2
saveCanvas: false  after restore: 1
saveCanvas: true  before restore: 2
saveCanvas: true  after restore: 1
final count: 1

See Also

SkCanvas::save SkCanvas::restore