The Tor Browser: gfx/skia/trunk/src/utils/SkCanvasStack.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     2 /*

     3  * Copyright 2013 Google Inc.

     4  *

     5  * Use of this source code is governed by a BSD-style license that can be

     6  * found in the LICENSE file.

     7  */

     9 #ifndef SkCanvasStack_DEFINED

    10 #define SkCanvasStack_DEFINED

    12 #include "SkNWayCanvas.h"

    13 #include "SkTArray.h"

    15 class SkCanvasStack : public SkNWayCanvas {

    16 public:

    17     SkCanvasStack(int width, int height);

    18     virtual ~SkCanvasStack();

    20     void pushCanvas(SkCanvas* canvas, const SkIPoint& origin);

    21     virtual void removeAll() SK_OVERRIDE;

    23     /*

    24      * The following add/remove canvas methods are overrides from SkNWayCanvas

    25      * that do not make sense in the context of our CanvasStack, but since we

    26      * can share most of the other implementation of NWay we override those

    27      * methods to be no-ops.

    28      */

    29     virtual void addCanvas(SkCanvas*) SK_OVERRIDE { SkDEBUGFAIL("Invalid Op"); }

    30     virtual void removeCanvas(SkCanvas*) SK_OVERRIDE { SkDEBUGFAIL("Invalid Op"); }

    32 protected:

    33     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;

    35     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;

    36     virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;

    37     virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;

    38     virtual void onClipRegion(const SkRegion&, SkRegion::Op) SK_OVERRIDE;

    40 private:

    41     void clipToZOrderedBounds();

    43     struct CanvasData {

    44         SkIPoint origin;

    45         SkRegion requiredClip;

    46     };

    48     SkTArray<CanvasData> fCanvasData;

    50     typedef SkNWayCanvas INHERITED;

    51 };

    53 #endif

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