epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2006 The Android Open Source Project |
| 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 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | #include "SkLayerRasterizer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | #include "SkDraw.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 10 | #include "SkReadBuffer.h" |
| 11 | #include "SkWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 12 | #include "SkMask.h" |
| 13 | #include "SkMaskFilter.h" |
| 14 | #include "SkPaint.h" |
| 15 | #include "SkPath.h" |
reed@google.com | 75a0972 | 2012-05-10 12:56:16 +0000 | [diff] [blame] | 16 | #include "SkPathEffect.h" |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 17 | #include "../core/SkRasterClip.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 18 | #include "SkXfermode.h" |
| 19 | #include <new> |
| 20 | |
| 21 | struct SkLayerRasterizer_Rec { |
| 22 | SkPaint fPaint; |
| 23 | SkVector fOffset; |
| 24 | }; |
| 25 | |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 26 | SkLayerRasterizer::SkLayerRasterizer() |
| 27 | : fLayers(SkNEW_ARGS(SkDeque, (sizeof(SkLayerRasterizer_Rec)))) |
| 28 | { |
| 29 | } |
| 30 | |
| 31 | SkLayerRasterizer::SkLayerRasterizer(SkDeque* layers) : fLayers(layers) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 32 | { |
| 33 | } |
| 34 | |
commit-bot@chromium.org | 6573ce7 | 2014-04-10 20:42:53 +0000 | [diff] [blame] | 35 | // Helper function to call destructors on SkPaints held by layers and delete layers. |
| 36 | static void clean_up_layers(SkDeque* layers) { |
| 37 | SkDeque::F2BIter iter(*layers); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 38 | SkLayerRasterizer_Rec* rec; |
| 39 | |
| 40 | while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) |
| 41 | rec->fPaint.~SkPaint(); |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 42 | |
commit-bot@chromium.org | 6573ce7 | 2014-04-10 20:42:53 +0000 | [diff] [blame] | 43 | SkDELETE(layers); |
| 44 | } |
| 45 | |
| 46 | SkLayerRasterizer::~SkLayerRasterizer() { |
| 47 | SkASSERT(fLayers); |
| 48 | clean_up_layers(const_cast<SkDeque*>(fLayers)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 49 | } |
| 50 | |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 51 | static bool compute_bounds(const SkDeque& layers, const SkPath& path, |
| 52 | const SkMatrix& matrix, |
| 53 | const SkIRect* clipBounds, SkIRect* bounds) { |
reed@google.com | 4c09d5c | 2011-02-22 13:16:38 +0000 | [diff] [blame] | 54 | SkDeque::F2BIter iter(layers); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 55 | SkLayerRasterizer_Rec* rec; |
| 56 | |
| 57 | bounds->set(SK_MaxS32, SK_MaxS32, SK_MinS32, SK_MinS32); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 58 | |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 59 | while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 60 | const SkPaint& paint = rec->fPaint; |
| 61 | SkPath fillPath, devPath; |
| 62 | const SkPath* p = &path; |
| 63 | |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 64 | if (paint.getPathEffect() || paint.getStyle() != SkPaint::kFill_Style) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 65 | paint.getFillPath(path, &fillPath); |
| 66 | p = &fillPath; |
| 67 | } |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 68 | if (p->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 69 | continue; |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 70 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 71 | |
| 72 | // apply the matrix and offset |
| 73 | { |
| 74 | SkMatrix m = matrix; |
| 75 | m.preTranslate(rec->fOffset.fX, rec->fOffset.fY); |
| 76 | p->transform(m, &devPath); |
| 77 | } |
| 78 | |
| 79 | SkMask mask; |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 80 | if (!SkDraw::DrawToMask(devPath, clipBounds, paint.getMaskFilter(), |
| 81 | &matrix, &mask, |
junov@chromium.org | 2ac4ef5 | 2012-04-04 15:16:51 +0000 | [diff] [blame] | 82 | SkMask::kJustComputeBounds_CreateMode, |
| 83 | SkPaint::kFill_Style)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 84 | return false; |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 85 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 86 | |
| 87 | bounds->join(mask.fBounds); |
| 88 | } |
| 89 | return true; |
| 90 | } |
| 91 | |
| 92 | bool SkLayerRasterizer::onRasterize(const SkPath& path, const SkMatrix& matrix, |
| 93 | const SkIRect* clipBounds, |
reed@google.com | fdba404 | 2012-12-18 16:57:03 +0000 | [diff] [blame] | 94 | SkMask* mask, SkMask::CreateMode mode) const { |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 95 | SkASSERT(fLayers); |
| 96 | if (fLayers->empty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 97 | return false; |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 98 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 99 | |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 100 | if (SkMask::kJustRenderImage_CreateMode != mode) { |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 101 | if (!compute_bounds(*fLayers, path, matrix, clipBounds, &mask->fBounds)) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 102 | return false; |
| 103 | } |
| 104 | |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 105 | if (SkMask::kComputeBoundsAndRenderImage_CreateMode == mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 106 | mask->fFormat = SkMask::kA8_Format; |
reed@android.com | 49f0ff2 | 2009-03-19 21:52:42 +0000 | [diff] [blame] | 107 | mask->fRowBytes = mask->fBounds.width(); |
reed@android.com | 543ed93 | 2009-04-24 12:43:40 +0000 | [diff] [blame] | 108 | size_t size = mask->computeImageSize(); |
| 109 | if (0 == size) { |
| 110 | return false; // too big to allocate, abort |
| 111 | } |
| 112 | mask->fImage = SkMask::AllocImage(size); |
| 113 | memset(mask->fImage, 0, size); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 114 | } |
| 115 | |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 116 | if (SkMask::kJustComputeBounds_CreateMode != mode) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 117 | SkBitmap device; |
| 118 | SkRasterClip rectClip; |
| 119 | SkDraw draw; |
| 120 | SkMatrix translatedMatrix; // this translates us to our local pixels |
| 121 | SkMatrix drawMatrix; // this translates the path by each layer's offset |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 122 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 123 | rectClip.setRect(SkIRect::MakeWH(mask->fBounds.width(), mask->fBounds.height())); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 124 | |
| 125 | translatedMatrix = matrix; |
| 126 | translatedMatrix.postTranslate(-SkIntToScalar(mask->fBounds.fLeft), |
| 127 | -SkIntToScalar(mask->fBounds.fTop)); |
| 128 | |
commit-bot@chromium.org | dac5225 | 2014-02-17 21:21:46 +0000 | [diff] [blame] | 129 | device.installMaskPixels(*mask); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 130 | |
| 131 | draw.fBitmap = &device; |
| 132 | draw.fMatrix = &drawMatrix; |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 133 | draw.fRC = &rectClip; |
| 134 | draw.fClip = &rectClip.bwRgn(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 135 | // we set the matrixproc in the loop, as the matrix changes each time (potentially) |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 136 | |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 137 | SkDeque::F2BIter iter(*fLayers); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 138 | SkLayerRasterizer_Rec* rec; |
| 139 | |
| 140 | while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) { |
| 141 | drawMatrix = translatedMatrix; |
| 142 | drawMatrix.preTranslate(rec->fOffset.fX, rec->fOffset.fY); |
| 143 | draw.drawPath(path, rec->fPaint); |
| 144 | } |
| 145 | } |
| 146 | return true; |
| 147 | } |
| 148 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 149 | SkLayerRasterizer::SkLayerRasterizer(SkReadBuffer& buffer) |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 150 | : SkRasterizer(buffer), fLayers(ReadLayers(buffer)) {} |
| 151 | |
| 152 | SkDeque* SkLayerRasterizer::ReadLayers(SkReadBuffer& buffer) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 153 | int count = buffer.readInt(); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 154 | |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 155 | SkDeque* layers = SkNEW_ARGS(SkDeque, (sizeof(SkLayerRasterizer_Rec))); |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 156 | for (int i = 0; i < count; i++) { |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 157 | SkLayerRasterizer_Rec* rec = (SkLayerRasterizer_Rec*)layers->push_back(); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 158 | |
tomhudson@google.com | 060ef18 | 2012-07-24 12:22:40 +0000 | [diff] [blame] | 159 | SkNEW_PLACEMENT(&rec->fPaint, SkPaint); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 160 | buffer.readPaint(&rec->fPaint); |
| 161 | buffer.readPoint(&rec->fOffset); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 162 | } |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 163 | return layers; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 164 | } |
| 165 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 166 | void SkLayerRasterizer::flatten(SkWriteBuffer& buffer) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 167 | this->INHERITED::flatten(buffer); |
| 168 | |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 169 | SkASSERT(fLayers); |
| 170 | buffer.writeInt(fLayers->count()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 171 | |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 172 | SkDeque::F2BIter iter(*fLayers); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 173 | const SkLayerRasterizer_Rec* rec; |
| 174 | |
mike@reedtribe.org | 3334c3a | 2011-04-20 11:39:28 +0000 | [diff] [blame] | 175 | while ((rec = (const SkLayerRasterizer_Rec*)iter.next()) != NULL) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 176 | buffer.writePaint(rec->fPaint); |
| 177 | buffer.writePoint(rec->fOffset); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 178 | } |
| 179 | } |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 180 | |
| 181 | SkLayerRasterizer::Builder::Builder() |
| 182 | : fLayers(SkNEW_ARGS(SkDeque, (sizeof(SkLayerRasterizer_Rec)))) |
| 183 | { |
| 184 | } |
| 185 | |
| 186 | SkLayerRasterizer::Builder::~Builder() |
| 187 | { |
commit-bot@chromium.org | 6573ce7 | 2014-04-10 20:42:53 +0000 | [diff] [blame] | 188 | if (fLayers != NULL) { |
| 189 | clean_up_layers(fLayers); |
| 190 | } |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | void SkLayerRasterizer::Builder::addLayer(const SkPaint& paint, SkScalar dx, |
| 194 | SkScalar dy) { |
| 195 | SkASSERT(fLayers); |
| 196 | SkLayerRasterizer_Rec* rec = (SkLayerRasterizer_Rec*)fLayers->push_back(); |
| 197 | |
| 198 | SkNEW_PLACEMENT_ARGS(&rec->fPaint, SkPaint, (paint)); |
| 199 | rec->fOffset.set(dx, dy); |
| 200 | } |
| 201 | |
| 202 | SkLayerRasterizer* SkLayerRasterizer::Builder::detachRasterizer() { |
scroggo | 65044bf | 2014-06-03 13:12:51 -0700 | [diff] [blame] | 203 | SkLayerRasterizer* rasterizer; |
| 204 | if (0 == fLayers->count()) { |
| 205 | rasterizer = NULL; |
| 206 | SkDELETE(fLayers); |
| 207 | } else { |
| 208 | rasterizer = SkNEW_ARGS(SkLayerRasterizer, (fLayers)); |
| 209 | } |
commit-bot@chromium.org | f792a1b | 2014-02-26 13:27:37 +0000 | [diff] [blame] | 210 | fLayers = NULL; |
| 211 | return rasterizer; |
| 212 | } |
commit-bot@chromium.org | 6573ce7 | 2014-04-10 20:42:53 +0000 | [diff] [blame] | 213 | |
| 214 | SkLayerRasterizer* SkLayerRasterizer::Builder::snapshotRasterizer() const { |
scroggo | 65044bf | 2014-06-03 13:12:51 -0700 | [diff] [blame] | 215 | if (0 == fLayers->count()) { |
| 216 | return NULL; |
| 217 | } |
commit-bot@chromium.org | 6573ce7 | 2014-04-10 20:42:53 +0000 | [diff] [blame] | 218 | SkDeque* layers = SkNEW_ARGS(SkDeque, (sizeof(SkLayerRasterizer_Rec), fLayers->count())); |
| 219 | SkDeque::F2BIter iter(*fLayers); |
| 220 | const SkLayerRasterizer_Rec* recOrig; |
| 221 | SkDEBUGCODE(int count = 0;) |
| 222 | while ((recOrig = static_cast<SkLayerRasterizer_Rec*>(iter.next())) != NULL) { |
| 223 | SkDEBUGCODE(count++); |
| 224 | SkLayerRasterizer_Rec* recCopy = static_cast<SkLayerRasterizer_Rec*>(layers->push_back()); |
| 225 | SkNEW_PLACEMENT_ARGS(&recCopy->fPaint, SkPaint, (recOrig->fPaint)); |
| 226 | recCopy->fOffset = recOrig->fOffset; |
| 227 | } |
| 228 | SkASSERT(fLayers->count() == count); |
| 229 | SkASSERT(layers->count() == count); |
| 230 | SkLayerRasterizer* rasterizer = SkNEW_ARGS(SkLayerRasterizer, (layers)); |
| 231 | return rasterizer; |
| 232 | } |