The Tor Browser: gfx/skia/trunk/include/utils/SkProxyCanvas.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 2011 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  */

     8 #ifndef SkProxyCanvas_DEFINED

     9 #define SkProxyCanvas_DEFINED

    11 #include "SkCanvas.h"

    13 /** This class overrides all virtual methods on SkCanvas, and redirects them

    14     to a "proxy", another SkCanvas instance. It can be the basis for

    15     intercepting (and possibly modifying) calls to a canvas.

    17     There must be a proxy installed before the proxycanvas can be used (i.e.

    18     before its virtual methods can be called).

    19  */

    20 class SK_API SkProxyCanvas : public SkCanvas {

    21 public:

    22     SkProxyCanvas() : fProxy(NULL) {}

    23     SkProxyCanvas(SkCanvas* proxy);

    24     virtual ~SkProxyCanvas();

    26     SkCanvas*   getProxy() const { return fProxy; }

    27     void        setProxy(SkCanvas* proxy);

    29     virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;

    30     virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],

    31                             const SkPaint& paint) SK_OVERRIDE;

    32     virtual void drawOval(const SkRect&, const SkPaint& paint) SK_OVERRIDE;

    33     virtual void drawRect(const SkRect&, const SkPaint& paint) SK_OVERRIDE;

    34     virtual void drawRRect(const SkRRect&, const SkPaint& paint) SK_OVERRIDE;

    35     virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;

    36     virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,

    37                             const SkPaint* paint = NULL) SK_OVERRIDE;

    38     virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,

    39                                       const SkRect& dst, const SkPaint* paint,

    40                                       DrawBitmapRectFlags flags) SK_OVERRIDE;

    41     virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,

    42                                   const SkPaint* paint = NULL) SK_OVERRIDE;

    43     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,

    44                             const SkPaint* paint = NULL) SK_OVERRIDE;

    45     virtual void drawText(const void* text, size_t byteLength, SkScalar x,

    46                           SkScalar y, const SkPaint& paint) SK_OVERRIDE;

    47     virtual void drawPosText(const void* text, size_t byteLength,

    48                              const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;

    49     virtual void drawPosTextH(const void* text, size_t byteLength,

    50                               const SkScalar xpos[], SkScalar constY,

    51                               const SkPaint& paint) SK_OVERRIDE;

    52     virtual void drawTextOnPath(const void* text, size_t byteLength,

    53                                 const SkPath& path, const SkMatrix* matrix,

    54                                 const SkPaint& paint) SK_OVERRIDE;

    55     virtual void drawPicture(SkPicture&) SK_OVERRIDE;

    56     virtual void drawVertices(VertexMode vmode, int vertexCount,

    57                               const SkPoint vertices[], const SkPoint texs[],

    58                               const SkColor colors[], SkXfermode* xmode,

    59                               const uint16_t indices[], int indexCount,

    60                               const SkPaint& paint) SK_OVERRIDE;

    61     virtual void drawData(const void* data, size_t length) SK_OVERRIDE;

    63     virtual void beginCommentGroup(const char* description) SK_OVERRIDE;

    64     virtual void addComment(const char* kywd, const char* value) SK_OVERRIDE;

    65     virtual void endCommentGroup() SK_OVERRIDE;

    67     virtual SkBounder* setBounder(SkBounder* bounder) SK_OVERRIDE;

    68     virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) SK_OVERRIDE;

    70 protected:

    71     virtual void willSave(SaveFlags) SK_OVERRIDE;

    72     virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) SK_OVERRIDE;

    73     virtual void willRestore() SK_OVERRIDE;

    75     virtual void didTranslate(SkScalar, SkScalar) SK_OVERRIDE;

    76     virtual void didScale(SkScalar, SkScalar) SK_OVERRIDE;

    77     virtual void didRotate(SkScalar) SK_OVERRIDE;

    78     virtual void didSkew(SkScalar, SkScalar) SK_OVERRIDE;

    79     virtual void didConcat(const SkMatrix&) SK_OVERRIDE;

    80     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;

    82     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;

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

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

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

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

    89 private:

    90     SkCanvas*   fProxy;

    92     typedef SkCanvas INHERITED;

    93 };

    95 #endif

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