1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/include/utils/SkNoSaveLayerCanvas.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,47 @@
1.4 +/*
1.5 + * Copyright 2014 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef SkNoSaveLayerCanvas_DEFINED
1.12 +#define SkNoSaveLayerCanvas_DEFINED
1.13 +
1.14 +#include "SkCanvas.h"
1.15 +#include "SkRRect.h"
1.16 +
1.17 +// The NoSaveLayerCanvas is used to play back SkPictures when the saveLayer
1.18 +// functionality isn't required (e.g., during analysis of the draw calls).
1.19 +// It also simplifies the clipping calls to only use rectangles.
1.20 +class SK_API SkNoSaveLayerCanvas : public SkCanvas {
1.21 +public:
1.22 + SkNoSaveLayerCanvas(SkBaseDevice* device) : INHERITED(device) {}
1.23 +
1.24 +protected:
1.25 + virtual SaveLayerStrategy willSaveLayer(const SkRect* bounds, const SkPaint* paint,
1.26 + SaveFlags flags) SK_OVERRIDE {
1.27 + this->INHERITED::willSaveLayer(bounds, paint, flags);
1.28 + return kNoLayer_SaveLayerStrategy;
1.29 + }
1.30 +
1.31 + // disable aa for speed
1.32 + virtual void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
1.33 + this->INHERITED::onClipRect(rect, op, kHard_ClipEdgeStyle);
1.34 + }
1.35 +
1.36 + // for speed, just respect the bounds, and disable AA. May give us a few
1.37 + // false positives and negatives.
1.38 + virtual void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
1.39 + this->updateClipConservativelyUsingBounds(path.getBounds(), op,
1.40 + path.isInverseFillType());
1.41 + }
1.42 + virtual void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
1.43 + this->updateClipConservativelyUsingBounds(rrect.getBounds(), op, false);
1.44 + }
1.45 +
1.46 +private:
1.47 + typedef SkCanvas INHERITED;
1.48 +};
1.49 +
1.50 +#endif // SkNoSaveLayerCanvas_DEFINED
