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comparison: gfx/skia/trunk/src/pdf/SkPDFDeviceFlattener.cpp
gfx/skia/trunk/src/pdf/SkPDFDeviceFlattener.cpp
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| -1:000000000000 | 0:fadca2859510 |
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| 1 /* | |
| 2 * Copyright 2013 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 "SkPDFDeviceFlattener.h" | |
| 9 | |
| 10 #include "SkDraw.h" | |
| 11 | |
| 12 static SkISize SkSizeToISize(const SkSize& size) { | |
| 13 return SkISize::Make(SkScalarRoundToInt(size.width()), SkScalarRoundToInt(size.height())); | |
| 14 } | |
| 15 | |
| 16 SkPDFDeviceFlattener::SkPDFDeviceFlattener(const SkSize& pageSize, const SkRect* trimBox) | |
| 17 : SkPDFDevice(SkSizeToISize(pageSize), | |
| 18 SkSizeToISize(pageSize), | |
| 19 SkMatrix::I()) { | |
| 20 // TODO(edisonn): store the trimbox on emit. | |
| 21 } | |
| 22 | |
| 23 SkPDFDeviceFlattener::~SkPDFDeviceFlattener() { | |
| 24 } | |
| 25 | |
| 26 static void flattenPaint(const SkDraw& d, SkPaint* paint) { | |
| 27 if (paint->getShader()) { | |
| 28 SkMatrix local = paint->getShader()->getLocalMatrix(); | |
| 29 local.preConcat(*d.fMatrix); | |
| 30 paint->getShader()->setLocalMatrix(local); | |
| 31 } | |
| 32 } | |
| 33 | |
| 34 void SkPDFDeviceFlattener::drawPoints(const SkDraw& d, SkCanvas::PointMode mode, | |
| 35 size_t count, const SkPoint points[], | |
| 36 const SkPaint& paint) { | |
| 37 if (!mustFlatten(d)) { | |
| 38 INHERITED::drawPoints(d, mode, count, points, paint); | |
| 39 return; | |
| 40 } | |
| 41 | |
| 42 SkPaint paintFlatten(paint); | |
| 43 flattenPaint(d, &paintFlatten); | |
| 44 | |
| 45 SkPoint* flattenedPoints = SkNEW_ARRAY(SkPoint, count); | |
| 46 d.fMatrix->mapPoints(flattenedPoints, points, SkToS32(count)); | |
| 47 SkDraw draw(d); | |
| 48 SkMatrix identity = SkMatrix::I(); | |
| 49 draw.fMatrix = &identity; | |
| 50 INHERITED::drawPoints(draw, mode, count, flattenedPoints, paintFlatten); | |
| 51 SkDELETE_ARRAY(flattenedPoints); | |
| 52 } | |
| 53 | |
| 54 void SkPDFDeviceFlattener::drawRect(const SkDraw& d, const SkRect& r, const SkPaint& paint) { | |
| 55 if (!mustFlatten(d)) { | |
| 56 INHERITED::drawRect(d, r, paint); | |
| 57 return; | |
| 58 } | |
| 59 | |
| 60 SkPath path; | |
| 61 path.addRect(r); | |
| 62 path.transform(*d.fMatrix); | |
| 63 SkDraw draw(d); | |
| 64 SkMatrix matrix = SkMatrix::I(); | |
| 65 draw.fMatrix = &matrix; | |
| 66 | |
| 67 SkPaint paintFlatten(paint); | |
| 68 flattenPaint(d, &paintFlatten); | |
| 69 | |
| 70 INHERITED::drawPath(draw, path, paintFlatten, NULL, true); | |
| 71 } | |
| 72 | |
| 73 void SkPDFDeviceFlattener::drawPath(const SkDraw& d, const SkPath& origPath, | |
| 74 const SkPaint& paint, const SkMatrix* prePathMatrix, | |
| 75 bool pathIsMutable) { | |
| 76 if (!mustFlatten(d) && !(prePathMatrix && prePathMatrix->hasPerspective())) { | |
| 77 INHERITED::drawPath(d, origPath, paint, prePathMatrix, pathIsMutable); | |
| 78 return; | |
| 79 } | |
| 80 | |
| 81 SkPath* pathPtr = (SkPath*)&origPath; | |
| 82 SkPath tmpPath; | |
| 83 | |
| 84 if (!pathIsMutable) { | |
| 85 tmpPath = origPath; | |
| 86 pathPtr = &tmpPath; | |
| 87 } | |
| 88 | |
| 89 if (prePathMatrix) { | |
| 90 pathPtr->transform(*prePathMatrix); | |
| 91 } | |
| 92 | |
| 93 SkPaint paintFlatten(paint); | |
| 94 flattenPaint(d, &paintFlatten); | |
| 95 | |
| 96 bool fill = paintFlatten.getFillPath(*pathPtr, &tmpPath); | |
| 97 SkDEBUGCODE(pathPtr = (SkPath*)0x12345678); // Don't use pathPtr after this point. | |
| 98 | |
| 99 paintFlatten.setPathEffect(NULL); | |
| 100 if (fill) { | |
| 101 paintFlatten.setStyle(SkPaint::kFill_Style); | |
| 102 } else { | |
| 103 paintFlatten.setStyle(SkPaint::kStroke_Style); | |
| 104 paintFlatten.setStrokeWidth(0); | |
| 105 } | |
| 106 | |
| 107 tmpPath.transform(*d.fMatrix); | |
| 108 | |
| 109 SkDraw draw(d); | |
| 110 SkMatrix matrix = SkMatrix::I(); | |
| 111 draw.fMatrix = &matrix; | |
| 112 | |
| 113 INHERITED::drawPath(draw, tmpPath, paintFlatten, NULL, true); | |
| 114 } | |
| 115 | |
| 116 void SkPDFDeviceFlattener::drawText(const SkDraw& d, const void* text, size_t len, | |
| 117 SkScalar x, SkScalar y, const SkPaint& paint) { | |
| 118 if (mustPathText(d, paint)) { | |
| 119 d.drawText_asPaths((const char*)text, len, x, y, paint); | |
| 120 return; | |
| 121 } | |
| 122 | |
| 123 INHERITED::drawText(d, text, len, x, y, paint); | |
| 124 } | |
| 125 | |
| 126 void SkPDFDeviceFlattener::drawPosText(const SkDraw& d, const void* text, size_t len, | |
| 127 const SkScalar pos[], SkScalar constY, | |
| 128 int scalarsPerPos, const SkPaint& paint) { | |
| 129 if (mustPathText(d, paint)) { | |
| 130 d.drawPosText_asPaths((const char*)text, len, pos, constY, scalarsPerPos, paint); | |
| 131 return; | |
| 132 } | |
| 133 INHERITED::drawPosText(d, text, len, pos, constY,scalarsPerPos, paint); | |
| 134 } | |
| 135 | |
| 136 void SkPDFDeviceFlattener::drawTextOnPath(const SkDraw& d, const void* text, size_t len, | |
| 137 const SkPath& path, const SkMatrix* matrix, | |
| 138 const SkPaint& paint) { | |
| 139 if (mustPathText(d, paint) || (matrix && matrix->hasPerspective())) { | |
| 140 d.drawTextOnPath((const char*)text, len, path, matrix, paint); | |
| 141 return; | |
| 142 } | |
| 143 INHERITED::drawTextOnPath(d, text, len, path, matrix, paint); | |
| 144 } | |
| 145 | |
| 146 bool SkPDFDeviceFlattener::mustFlatten(const SkDraw& d) const { | |
| 147 // TODO(edisonn): testability, add flag to force return true. | |
| 148 return d.fMatrix->hasPerspective(); | |
| 149 } | |
| 150 | |
| 151 bool SkPDFDeviceFlattener::mustPathText(const SkDraw& d, const SkPaint&) { | |
| 152 // TODO(edisonn): testability, add flag to force return true. | |
| 153 // TODO(edisonn): TBD: How to flatten MaskFilter. | |
| 154 return d.fMatrix->hasPerspective(); | |
| 155 } |
