epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 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.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | #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 | */ |
| 20 | class SkProxyCanvas : public SkCanvas { |
| 21 | public: |
| 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.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 29 | virtual int save(SaveFlags flags = kMatrixClip_SaveFlag) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 30 | virtual int saveLayer(const SkRect* bounds, const SkPaint* paint, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 31 | SaveFlags flags = kARGB_ClipLayer_SaveFlag) SK_OVERRIDE; |
| 32 | virtual void restore() SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 33 | |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 34 | 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.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 40 | |
reed@google.com | 071eef9 | 2011-10-12 11:52:53 +0000 | [diff] [blame^] | 41 | virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE; |
| 42 | virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 43 | virtual bool clipRegion(const SkRegion& deviceRgn, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 44 | SkRegion::Op op = SkRegion::kIntersect_Op) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 45 | |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 46 | virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 47 | virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[], |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 48 | 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.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 51 | virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 52 | const SkPaint* paint = NULL) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 53 | virtual void drawBitmapRect(const SkBitmap& bitmap, const SkIRect* src, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 54 | const SkRect& dst, const SkPaint* paint = NULL) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 55 | virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 56 | const SkPaint* paint = NULL) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 57 | virtual void drawSprite(const SkBitmap& bitmap, int left, int top, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 58 | const SkPaint* paint = NULL) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 59 | virtual void drawText(const void* text, size_t byteLength, SkScalar x, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 60 | SkScalar y, const SkPaint& paint) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 61 | virtual void drawPosText(const void* text, size_t byteLength, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 62 | const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 63 | virtual void drawPosTextH(const void* text, size_t byteLength, |
| 64 | const SkScalar xpos[], SkScalar constY, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 65 | const SkPaint& paint) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 66 | virtual void drawTextOnPath(const void* text, size_t byteLength, |
| 67 | const SkPath& path, const SkMatrix* matrix, |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 68 | const SkPaint& paint) SK_OVERRIDE; |
| 69 | virtual void drawPicture(SkPicture&) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 70 | 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.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 74 | const SkPaint& paint) SK_OVERRIDE; |
| 75 | virtual void drawData(const void* data, size_t length) SK_OVERRIDE; |
reed@android.com | cb60844 | 2009-12-04 21:32:27 +0000 | [diff] [blame] | 76 | |
reed@google.com | 2d4297c | 2011-10-06 13:14:12 +0000 | [diff] [blame] | 77 | virtual SkBounder* setBounder(SkBounder* bounder) SK_OVERRIDE; |
| 78 | virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 79 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 80 | private: |
| 81 | SkCanvas* fProxy; |
| 82 | |
| 83 | typedef SkCanvas INHERITED; |
| 84 | }; |
| 85 | |
| 86 | #endif |