1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/utils/SkCanvasStack.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,53 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2013 Google Inc.
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +#ifndef SkCanvasStack_DEFINED
1.13 +#define SkCanvasStack_DEFINED
1.14 +
1.15 +#include "SkNWayCanvas.h"
1.16 +#include "SkTArray.h"
1.17 +
1.18 +class SkCanvasStack : public SkNWayCanvas {
1.19 +public:
1.20 + SkCanvasStack(int width, int height);
1.21 + virtual ~SkCanvasStack();
1.22 +
1.23 + void pushCanvas(SkCanvas* canvas, const SkIPoint& origin);
1.24 + virtual void removeAll() SK_OVERRIDE;
1.25 +
1.26 + /*
1.27 + * The following add/remove canvas methods are overrides from SkNWayCanvas
1.28 + * that do not make sense in the context of our CanvasStack, but since we
1.29 + * can share most of the other implementation of NWay we override those
1.30 + * methods to be no-ops.
1.31 + */
1.32 + virtual void addCanvas(SkCanvas*) SK_OVERRIDE { SkDEBUGFAIL("Invalid Op"); }
1.33 + virtual void removeCanvas(SkCanvas*) SK_OVERRIDE { SkDEBUGFAIL("Invalid Op"); }
1.34 +
1.35 +protected:
1.36 + virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
1.37 +
1.38 + virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
1.39 + virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
1.40 + virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
1.41 + virtual void onClipRegion(const SkRegion&, SkRegion::Op) SK_OVERRIDE;
1.42 +
1.43 +private:
1.44 + void clipToZOrderedBounds();
1.45 +
1.46 + struct CanvasData {
1.47 + SkIPoint origin;
1.48 + SkRegion requiredClip;
1.49 + };
1.50 +
1.51 + SkTArray<CanvasData> fCanvasData;
1.52 +
1.53 + typedef SkNWayCanvas INHERITED;
1.54 +};
1.55 +
1.56 +#endif
