blob: e96b9b2dac5da1ac9d19ee3fbb9bd538ae8a2ddb [file] [log] [blame]
epoger@google.comec3ed6a2011-07-28 14:26:00 +00001
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 */
reed@android.com8a1c16f2008-12-17 15:59:43 +00008#ifndef SkProxyCanvas_DEFINED
9#define SkProxyCanvas_DEFINED
10
11#include "SkCanvas.h"
12
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.
16
17 There must be a proxy installed before the proxycanvas can be used (i.e.
18 before its virtual methods can be called).
19 */
20class SkProxyCanvas : public SkCanvas {
21public:
22 SkProxyCanvas() : fProxy(NULL) {}
23 SkProxyCanvas(SkCanvas* proxy);
24 virtual ~SkProxyCanvas();
25
26 SkCanvas* getProxy() const { return fProxy; }
27 void setProxy(SkCanvas* proxy);
28
reed@google.com2d4297c2011-10-06 13:14:12 +000029 virtual int save(SaveFlags flags = kMatrixClip_SaveFlag) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000030 virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
reed@google.com2d4297c2011-10-06 13:14:12 +000031 SaveFlags flags = kARGB_ClipLayer_SaveFlag) SK_OVERRIDE;
32 virtual void restore() SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000033
reed@google.com2d4297c2011-10-06 13:14:12 +000034 virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
35 virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
36 virtual bool rotate(SkScalar degrees) SK_OVERRIDE;
37 virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE;
38 virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE;
39 virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000040
reed@google.com071eef92011-10-12 11:52:53 +000041 virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE;
42 virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000043 virtual bool clipRegion(const SkRegion& deviceRgn,
reed@google.com2d4297c2011-10-06 13:14:12 +000044 SkRegion::Op op = SkRegion::kIntersect_Op) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000045
reed@google.com2d4297c2011-10-06 13:14:12 +000046 virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000047 virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
reed@google.com2d4297c2011-10-06 13:14:12 +000048 const SkPaint& paint) SK_OVERRIDE;
49 virtual void drawRect(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
50 virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000051 virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
reed@google.com2d4297c2011-10-06 13:14:12 +000052 const SkPaint* paint = NULL) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000053 virtual void drawBitmapRect(const SkBitmap& bitmap, const SkIRect* src,
reed@google.com2d4297c2011-10-06 13:14:12 +000054 const SkRect& dst, const SkPaint* paint = NULL) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000055 virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
reed@google.com2d4297c2011-10-06 13:14:12 +000056 const SkPaint* paint = NULL) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000057 virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
reed@google.com2d4297c2011-10-06 13:14:12 +000058 const SkPaint* paint = NULL) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000059 virtual void drawText(const void* text, size_t byteLength, SkScalar x,
reed@google.com2d4297c2011-10-06 13:14:12 +000060 SkScalar y, const SkPaint& paint) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000061 virtual void drawPosText(const void* text, size_t byteLength,
reed@google.com2d4297c2011-10-06 13:14:12 +000062 const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000063 virtual void drawPosTextH(const void* text, size_t byteLength,
64 const SkScalar xpos[], SkScalar constY,
reed@google.com2d4297c2011-10-06 13:14:12 +000065 const SkPaint& paint) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000066 virtual void drawTextOnPath(const void* text, size_t byteLength,
67 const SkPath& path, const SkMatrix* matrix,
reed@google.com2d4297c2011-10-06 13:14:12 +000068 const SkPaint& paint) SK_OVERRIDE;
69 virtual void drawPicture(SkPicture&) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000070 virtual void drawVertices(VertexMode vmode, int vertexCount,
71 const SkPoint vertices[], const SkPoint texs[],
72 const SkColor colors[], SkXfermode* xmode,
73 const uint16_t indices[], int indexCount,
reed@google.com2d4297c2011-10-06 13:14:12 +000074 const SkPaint& paint) SK_OVERRIDE;
75 virtual void drawData(const void* data, size_t length) SK_OVERRIDE;
reed@android.comcb608442009-12-04 21:32:27 +000076
reed@google.com2d4297c2011-10-06 13:14:12 +000077 virtual SkBounder* setBounder(SkBounder* bounder) SK_OVERRIDE;
78 virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) SK_OVERRIDE;
reed@android.com8a1c16f2008-12-17 15:59:43 +000079
reed@android.com8a1c16f2008-12-17 15:59:43 +000080private:
81 SkCanvas* fProxy;
82
83 typedef SkCanvas INHERITED;
84};
85
86#endif