1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkPaintFilterCanvas.h" 9 10 #include "SkPaint.h" 11 #include "SkTLazy.h" 12 13 class SkPaintFilterCanvas::AutoPaintFilter { 14 public: 15 AutoPaintFilter(const SkPaintFilterCanvas* canvas, Type type, const SkPaint* paint) 16 : fPaint(paint) { 17 fShouldDraw = canvas->onFilter(&fPaint, type); 18 } 19 20 AutoPaintFilter(const SkPaintFilterCanvas* canvas, Type type, const SkPaint& paint) 21 : AutoPaintFilter(canvas, type, &paint) { } 22 23 const SkPaint* paint() const { return fPaint; } 24 25 bool shouldDraw() const { return fShouldDraw; } 26 27 private: 28 SkTCopyOnFirstWrite<SkPaint> fPaint; 29 bool fShouldDraw; 30 }; 31 32 SkPaintFilterCanvas::SkPaintFilterCanvas(int width, int height) : INHERITED(width, height) { } 33 34 SkPaintFilterCanvas::SkPaintFilterCanvas(SkCanvas *canvas) 35 : INHERITED(canvas->imageInfo().width(), canvas->imageInfo().height()) { 36 37 // Transfer matrix & clip state before adding the target canvas. 38 SkIRect devClip; 39 canvas->getClipDeviceBounds(&devClip); 40 this->clipRect(SkRect::Make(devClip)); 41 this->setMatrix(canvas->getTotalMatrix()); 42 43 this->addCanvas(canvas); 44 } 45 46 void SkPaintFilterCanvas::onDrawPaint(const SkPaint& paint) { 47 AutoPaintFilter apf(this, kPaint_Type, paint); 48 if (apf.shouldDraw()) { 49 this->INHERITED::onDrawPaint(*apf.paint()); 50 } 51 } 52 53 void SkPaintFilterCanvas::onDrawPoints(PointMode mode, size_t count, const SkPoint pts[], 54 const SkPaint& paint) { 55 AutoPaintFilter apf(this, kPoint_Type, paint); 56 if (apf.shouldDraw()) { 57 this->INHERITED::onDrawPoints(mode, count, pts, *apf.paint()); 58 } 59 } 60 61 void SkPaintFilterCanvas::onDrawRect(const SkRect& rect, const SkPaint& paint) { 62 AutoPaintFilter apf(this, kRect_Type, paint); 63 if (apf.shouldDraw()) { 64 this->INHERITED::onDrawRect(rect, *apf.paint()); 65 } 66 } 67 68 void SkPaintFilterCanvas::onDrawRRect(const SkRRect& rrect, const SkPaint& paint) { 69 AutoPaintFilter apf(this, kRRect_Type, paint); 70 if (apf.shouldDraw()) { 71 this->INHERITED::onDrawRRect(rrect, *apf.paint()); 72 } 73 } 74 75 void SkPaintFilterCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, 76 const SkPaint& paint) { 77 AutoPaintFilter apf(this, kDRRect_Type, paint); 78 if (apf.shouldDraw()) { 79 this->INHERITED::onDrawDRRect(outer, inner, *apf.paint()); 80 } 81 } 82 83 void SkPaintFilterCanvas::onDrawOval(const SkRect& rect, const SkPaint& paint) { 84 AutoPaintFilter apf(this, kOval_Type, paint); 85 if (apf.shouldDraw()) { 86 this->INHERITED::onDrawOval(rect, *apf.paint()); 87 } 88 } 89 90 void SkPaintFilterCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) { 91 AutoPaintFilter apf(this, kPath_Type, paint); 92 if (apf.shouldDraw()) { 93 this->INHERITED::onDrawPath(path, *apf.paint()); 94 } 95 } 96 97 void SkPaintFilterCanvas::onDrawBitmap(const SkBitmap& bm, SkScalar left, SkScalar top, 98 const SkPaint* paint) { 99 AutoPaintFilter apf(this, kBitmap_Type, paint); 100 if (apf.shouldDraw()) { 101 this->INHERITED::onDrawBitmap(bm, left, top, apf.paint()); 102 } 103 } 104 105 void SkPaintFilterCanvas::onDrawBitmapRect(const SkBitmap& bm, const SkRect* src, const SkRect& dst, 106 const SkPaint* paint, SrcRectConstraint constraint) { 107 AutoPaintFilter apf(this, kBitmap_Type, paint); 108 if (apf.shouldDraw()) { 109 this->INHERITED::onDrawBitmapRect(bm, src, dst, apf.paint(), constraint); 110 } 111 } 112 113 void SkPaintFilterCanvas::onDrawBitmapNine(const SkBitmap& bm, const SkIRect& center, 114 const SkRect& dst, const SkPaint* paint) { 115 AutoPaintFilter apf(this, kBitmap_Type, paint); 116 if (apf.shouldDraw()) { 117 this->INHERITED::onDrawBitmapNine(bm, center, dst, apf.paint()); 118 } 119 } 120 121 void SkPaintFilterCanvas::onDrawImage(const SkImage* image, SkScalar left, SkScalar top, 122 const SkPaint* paint) { 123 AutoPaintFilter apf(this, kBitmap_Type, paint); 124 if (apf.shouldDraw()) { 125 this->INHERITED::onDrawImage(image, left, top, apf.paint()); 126 } 127 } 128 129 void SkPaintFilterCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, 130 const SkRect& dst, const SkPaint* paint, 131 SrcRectConstraint constraint) { 132 AutoPaintFilter apf(this, kBitmap_Type, paint); 133 if (apf.shouldDraw()) { 134 this->INHERITED::onDrawImageRect(image, src, dst, apf.paint(), constraint); 135 } 136 } 137 138 void SkPaintFilterCanvas::onDrawImageNine(const SkImage* image, const SkIRect& center, 139 const SkRect& dst, const SkPaint* paint) { 140 AutoPaintFilter apf(this, kBitmap_Type, paint); 141 if (apf.shouldDraw()) { 142 this->INHERITED::onDrawImageNine(image, center, dst, apf.paint()); 143 } 144 } 145 146 void SkPaintFilterCanvas::onDrawVertices(VertexMode vmode, int vertexCount, 147 const SkPoint vertices[], const SkPoint texs[], 148 const SkColor colors[], SkXfermode* xmode, 149 const uint16_t indices[], int indexCount, 150 const SkPaint& paint) { 151 AutoPaintFilter apf(this, kVertices_Type, paint); 152 if (apf.shouldDraw()) { 153 this->INHERITED::onDrawVertices(vmode, vertexCount, vertices, texs, colors, xmode, indices, 154 indexCount, *apf.paint()); 155 } 156 } 157 158 void SkPaintFilterCanvas::onDrawPatch(const SkPoint cubics[], const SkColor colors[], 159 const SkPoint texCoords[], SkXfermode* xmode, 160 const SkPaint& paint) { 161 AutoPaintFilter apf(this, kPatch_Type, paint); 162 if (apf.shouldDraw()) { 163 this->INHERITED::onDrawPatch(cubics, colors, texCoords, xmode, *apf.paint()); 164 } 165 } 166 167 void SkPaintFilterCanvas::onDrawPicture(const SkPicture* picture, const SkMatrix* m, 168 const SkPaint* paint) { 169 AutoPaintFilter apf(this, kPicture_Type, paint); 170 if (apf.shouldDraw()) { 171 this->INHERITED::onDrawPicture(picture, m, apf.paint()); 172 } 173 } 174 175 void SkPaintFilterCanvas::onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, 176 const SkPaint& paint) { 177 AutoPaintFilter apf(this, kText_Type, paint); 178 if (apf.shouldDraw()) { 179 this->INHERITED::onDrawText(text, byteLength, x, y, *apf.paint()); 180 } 181 } 182 183 void SkPaintFilterCanvas::onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[], 184 const SkPaint& paint) { 185 AutoPaintFilter apf(this, kText_Type, paint); 186 if (apf.shouldDraw()) { 187 this->INHERITED::onDrawPosText(text, byteLength, pos, *apf.paint()); 188 } 189 } 190 191 void SkPaintFilterCanvas::onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[], 192 SkScalar constY, const SkPaint& paint) { 193 AutoPaintFilter apf(this, kText_Type, paint); 194 if (apf.shouldDraw()) { 195 this->INHERITED::onDrawPosTextH(text, byteLength, xpos, constY, *apf.paint()); 196 } 197 } 198 199 void SkPaintFilterCanvas::onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path, 200 const SkMatrix* matrix, const SkPaint& paint) { 201 AutoPaintFilter apf(this, kText_Type, paint); 202 if (apf.shouldDraw()) { 203 this->INHERITED::onDrawTextOnPath(text, byteLength, path, matrix, *apf.paint()); 204 } 205 } 206 207 void SkPaintFilterCanvas::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, 208 const SkPaint& paint) { 209 AutoPaintFilter apf(this, kTextBlob_Type, paint); 210 if (apf.shouldDraw()) { 211 this->INHERITED::onDrawTextBlob(blob, x, y, *apf.paint()); 212 } 213 } 214
