Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 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 "SkColorFilter.h" |
Matt Sarett | be3bdd9 | 2016-12-12 18:35:43 -0500 | [diff] [blame] | 9 | #include "SkDrawable.h" |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 10 | #include "SkFindAndPlaceGlyph.h" |
Herb Derby | 2e83b13 | 2017-02-10 11:47:58 -0500 | [diff] [blame] | 11 | #include "SkImagePriv.h" |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 12 | #include "SkLatticeIter.h" |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 13 | #include "SkOverdrawCanvas.h" |
| 14 | #include "SkPatchUtils.h" |
| 15 | #include "SkPath.h" |
| 16 | #include "SkRRect.h" |
| 17 | #include "SkRSXform.h" |
| 18 | #include "SkTextBlob.h" |
| 19 | #include "SkTextBlobRunIterator.h" |
| 20 | |
| 21 | namespace { |
| 22 | class ProcessOneGlyphBounds { |
| 23 | public: |
| 24 | ProcessOneGlyphBounds(SkOverdrawCanvas* canvas) |
| 25 | : fCanvas(canvas) |
| 26 | {} |
| 27 | |
| 28 | void operator()(const SkGlyph& glyph, SkPoint position, SkPoint rounding) { |
| 29 | int left = SkScalarFloorToInt(position.fX) + glyph.fLeft; |
| 30 | int top = SkScalarFloorToInt(position.fY) + glyph.fTop; |
| 31 | int right = left + glyph.fWidth; |
| 32 | int bottom = top + glyph.fHeight; |
| 33 | fCanvas->onDrawRect(SkRect::MakeLTRB(left, top, right, bottom), SkPaint()); |
| 34 | } |
| 35 | |
| 36 | private: |
| 37 | SkOverdrawCanvas* fCanvas; |
| 38 | }; |
| 39 | }; |
| 40 | |
| 41 | SkOverdrawCanvas::SkOverdrawCanvas(SkCanvas* canvas) |
| 42 | : INHERITED(canvas->onImageInfo().width(), canvas->onImageInfo().height()) |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 43 | { |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 44 | // Non-drawing calls that SkOverdrawCanvas does not override (translate, save, etc.) |
| 45 | // will pass through to the input canvas. |
| 46 | this->addCanvas(canvas); |
| 47 | |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 48 | static constexpr float kIncrementAlpha[] = { |
| 49 | 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, |
| 50 | 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, |
| 51 | 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, |
| 52 | 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, |
| 53 | }; |
| 54 | |
| 55 | fPaint.setAntiAlias(false); |
| 56 | fPaint.setBlendMode(SkBlendMode::kPlus); |
| 57 | fPaint.setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(kIncrementAlpha)); |
| 58 | } |
| 59 | |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 60 | void SkOverdrawCanvas::onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, |
| 61 | const SkPaint& paint) { |
| 62 | ProcessOneGlyphBounds processBounds(this); |
| 63 | SkSurfaceProps props(0, kUnknown_SkPixelGeometry); |
| 64 | this->getProps(&props); |
| 65 | SkAutoGlyphCache cache(paint, &props, 0, &this->getTotalMatrix()); |
| 66 | SkFindAndPlaceGlyph::ProcessText(paint.getTextEncoding(), (const char*) text, byteLength, |
| 67 | SkPoint::Make(x, y), SkMatrix(), paint.getTextAlign(), |
| 68 | cache.get(), processBounds); |
| 69 | } |
| 70 | |
| 71 | void SkOverdrawCanvas::drawPosTextCommon(const void* text, size_t byteLength, const SkScalar pos[], |
| 72 | int scalarsPerPos, const SkPoint& offset, |
| 73 | const SkPaint& paint) { |
| 74 | ProcessOneGlyphBounds processBounds(this); |
| 75 | SkSurfaceProps props(0, kUnknown_SkPixelGeometry); |
| 76 | this->getProps(&props); |
| 77 | SkAutoGlyphCache cache(paint, &props, 0, &this->getTotalMatrix()); |
| 78 | SkFindAndPlaceGlyph::ProcessPosText(paint.getTextEncoding(), (const char*) text, byteLength, |
| 79 | SkPoint::Make(0, 0), SkMatrix(), (const SkScalar*) pos, 2, |
| 80 | paint.getTextAlign(), cache.get(), processBounds); |
| 81 | } |
| 82 | |
| 83 | void SkOverdrawCanvas::onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[], |
| 84 | const SkPaint& paint) { |
| 85 | this->drawPosTextCommon(text, byteLength, (SkScalar*) pos, 2, SkPoint::Make(0, 0), paint); |
| 86 | } |
| 87 | |
| 88 | void SkOverdrawCanvas::onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xs[], |
| 89 | SkScalar y, const SkPaint& paint) { |
| 90 | this->drawPosTextCommon(text, byteLength, (SkScalar*) xs, 1, SkPoint::Make(0, y), paint); |
| 91 | } |
| 92 | |
| 93 | void SkOverdrawCanvas::onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path, |
| 94 | const SkMatrix* matrix, const SkPaint& paint) { |
| 95 | SkASSERT(false); |
| 96 | return; |
| 97 | } |
| 98 | |
| 99 | typedef int (*CountTextProc)(const char* text); |
| 100 | static int count_utf16(const char* text) { |
| 101 | const uint16_t* prev = (uint16_t*)text; |
| 102 | (void)SkUTF16_NextUnichar(&prev); |
| 103 | return SkToInt((const char*)prev - text); |
| 104 | } |
| 105 | static int return_4(const char* text) { return 4; } |
| 106 | static int return_2(const char* text) { return 2; } |
| 107 | |
| 108 | void SkOverdrawCanvas::onDrawTextRSXform(const void* text, size_t byteLength, |
| 109 | const SkRSXform xform[], const SkRect*, |
| 110 | const SkPaint& paint) { |
| 111 | CountTextProc proc = nullptr; |
| 112 | switch (paint.getTextEncoding()) { |
| 113 | case SkPaint::kUTF8_TextEncoding: |
| 114 | proc = SkUTF8_CountUTF8Bytes; |
| 115 | break; |
| 116 | case SkPaint::kUTF16_TextEncoding: |
| 117 | proc = count_utf16; |
| 118 | break; |
| 119 | case SkPaint::kUTF32_TextEncoding: |
| 120 | proc = return_4; |
| 121 | break; |
| 122 | case SkPaint::kGlyphID_TextEncoding: |
| 123 | proc = return_2; |
| 124 | break; |
| 125 | } |
| 126 | SkASSERT(proc); |
| 127 | |
| 128 | SkMatrix matrix; |
| 129 | const void* stopText = (const char*)text + byteLength; |
| 130 | while ((const char*)text < (const char*)stopText) { |
| 131 | matrix.setRSXform(*xform++); |
| 132 | matrix.setConcat(this->getTotalMatrix(), matrix); |
| 133 | int subLen = proc((const char*)text); |
| 134 | |
| 135 | this->save(); |
| 136 | this->concat(matrix); |
| 137 | this->drawText(text, subLen, 0, 0, paint); |
| 138 | this->restore(); |
| 139 | |
| 140 | text = (const char*)text + subLen; |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | void SkOverdrawCanvas::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, |
| 145 | const SkPaint& paint) { |
| 146 | SkPaint runPaint = paint; |
| 147 | SkTextBlobRunIterator it(blob); |
| 148 | for (;!it.done(); it.next()) { |
| 149 | size_t textLen = it.glyphCount() * sizeof(uint16_t); |
| 150 | const SkPoint& offset = it.offset(); |
| 151 | it.applyFontToPaint(&runPaint); |
| 152 | switch (it.positioning()) { |
| 153 | case SkTextBlob::kDefault_Positioning: |
| 154 | this->onDrawText(it.glyphs(), textLen, x + offset.x(), y + offset.y(), runPaint); |
| 155 | break; |
| 156 | case SkTextBlob::kHorizontal_Positioning: |
| 157 | this->drawPosTextCommon(it.glyphs(), textLen, it.pos(), 1, |
| 158 | SkPoint::Make(x, y + offset.y()), runPaint); |
| 159 | break; |
| 160 | case SkTextBlob::kFull_Positioning: |
| 161 | this->drawPosTextCommon(it.glyphs(), textLen, it.pos(), 2, SkPoint::Make(x, y), |
| 162 | runPaint); |
| 163 | break; |
| 164 | default: |
| 165 | SkASSERT(false); |
| 166 | break; |
| 167 | } |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | void SkOverdrawCanvas::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], |
| 172 | const SkPoint texCoords[4], SkBlendMode blendMode, |
| 173 | const SkPaint&) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 174 | fList[0]->onDrawPatch(cubics, colors, texCoords, blendMode, fPaint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 175 | } |
| 176 | |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 177 | void SkOverdrawCanvas::onDrawPaint(const SkPaint& paint) { |
| 178 | if (0 == paint.getColor() && !paint.getColorFilter() && !paint.getShader()) { |
| 179 | // This is a clear, ignore it. |
| 180 | } else { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 181 | fList[0]->onDrawPaint(this->overdrawPaint(paint)); |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 182 | } |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 183 | } |
| 184 | |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 185 | void SkOverdrawCanvas::onDrawRect(const SkRect& rect, const SkPaint& paint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 186 | fList[0]->onDrawRect(rect, this->overdrawPaint(paint)); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | void SkOverdrawCanvas::onDrawRegion(const SkRegion& region, const SkPaint& paint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 190 | fList[0]->onDrawRegion(region, this->overdrawPaint(paint)); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 191 | } |
| 192 | |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 193 | void SkOverdrawCanvas::onDrawOval(const SkRect& oval, const SkPaint& paint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 194 | fList[0]->onDrawOval(oval, this->overdrawPaint(paint)); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | void SkOverdrawCanvas::onDrawArc(const SkRect& arc, SkScalar startAngle, SkScalar sweepAngle, |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 198 | bool useCenter, const SkPaint& paint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 199 | fList[0]->onDrawArc(arc, startAngle, sweepAngle, useCenter, this->overdrawPaint(paint)); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 200 | } |
| 201 | |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 202 | void SkOverdrawCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, |
| 203 | const SkPaint& paint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 204 | fList[0]->onDrawDRRect(outer, inner, this->overdrawPaint(paint)); |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | void SkOverdrawCanvas::onDrawRRect(const SkRRect& rect, const SkPaint& paint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 208 | fList[0]->onDrawRRect(rect, this->overdrawPaint(paint)); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | void SkOverdrawCanvas::onDrawPoints(PointMode mode, size_t count, const SkPoint points[], |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 212 | const SkPaint& paint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 213 | fList[0]->onDrawPoints(mode, count, points, this->overdrawPaint(paint)); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 214 | } |
| 215 | |
Mike Reed | fed9cfd | 2017-03-17 12:09:04 -0400 | [diff] [blame] | 216 | void SkOverdrawCanvas::onDrawVerticesObject(const SkVertices* vertices, SkBlendMode blendMode, |
| 217 | const SkPaint& paint) { |
| 218 | fList[0]->onDrawVerticesObject(vertices, blendMode, this->overdrawPaint(paint)); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | void SkOverdrawCanvas::onDrawAtlas(const SkImage* image, const SkRSXform xform[], |
| 222 | const SkRect texs[], const SkColor colors[], int count, |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 223 | SkBlendMode mode, const SkRect* cull, const SkPaint* paint) { |
| 224 | SkPaint* paintPtr = &fPaint; |
| 225 | SkPaint storage; |
| 226 | if (paint) { |
| 227 | storage = this->overdrawPaint(*paint); |
| 228 | paintPtr = &storage; |
| 229 | } |
| 230 | |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 231 | fList[0]->onDrawAtlas(image, xform, texs, colors, count, mode, cull, paintPtr); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 232 | } |
| 233 | |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 234 | void SkOverdrawCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 235 | fList[0]->onDrawPath(path, fPaint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | void SkOverdrawCanvas::onDrawImage(const SkImage* image, SkScalar x, SkScalar y, const SkPaint*) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 239 | fList[0]->onDrawRect(SkRect::MakeXYWH(x, y, image->width(), image->height()), fPaint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | void SkOverdrawCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst, |
| 243 | const SkPaint*, SrcRectConstraint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 244 | fList[0]->onDrawRect(dst, fPaint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | void SkOverdrawCanvas::onDrawImageNine(const SkImage*, const SkIRect&, const SkRect& dst, |
| 248 | const SkPaint*) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 249 | fList[0]->onDrawRect(dst, fPaint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 250 | } |
| 251 | |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 252 | void SkOverdrawCanvas::onDrawImageLattice(const SkImage* image, const Lattice& lattice, |
| 253 | const SkRect& dst, const SkPaint*) { |
| 254 | SkIRect bounds; |
| 255 | Lattice latticePlusBounds = lattice; |
| 256 | if (!latticePlusBounds.fBounds) { |
| 257 | bounds = SkIRect::MakeWH(image->width(), image->height()); |
| 258 | latticePlusBounds.fBounds = &bounds; |
| 259 | } |
| 260 | |
| 261 | if (SkLatticeIter::Valid(image->width(), image->height(), latticePlusBounds)) { |
| 262 | SkLatticeIter iter(latticePlusBounds, dst); |
| 263 | |
| 264 | SkRect dummy, iterDst; |
| 265 | while (iter.next(&dummy, &iterDst)) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 266 | fList[0]->onDrawRect(iterDst, fPaint); |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 267 | } |
| 268 | } else { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 269 | fList[0]->onDrawRect(dst, fPaint); |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 270 | } |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | void SkOverdrawCanvas::onDrawBitmap(const SkBitmap& bitmap, SkScalar x, SkScalar y, |
| 274 | const SkPaint*) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 275 | fList[0]->onDrawRect(SkRect::MakeXYWH(x, y, bitmap.width(), bitmap.height()), fPaint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | void SkOverdrawCanvas::onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect& dst, |
| 279 | const SkPaint*, SrcRectConstraint) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 280 | fList[0]->onDrawRect(dst, fPaint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | void SkOverdrawCanvas::onDrawBitmapNine(const SkBitmap&, const SkIRect&, const SkRect& dst, |
| 284 | const SkPaint*) { |
Matt Sarett | 25d6c83 | 2016-11-28 18:41:01 -0500 | [diff] [blame] | 285 | fList[0]->onDrawRect(dst, fPaint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 286 | } |
| 287 | |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 288 | void SkOverdrawCanvas::onDrawBitmapLattice(const SkBitmap& bitmap, const Lattice& lattice, |
| 289 | const SkRect& dst, const SkPaint* paint) { |
| 290 | sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(bitmap, kNever_SkCopyPixelsMode); |
| 291 | this->onDrawImageLattice(image.get(), lattice, dst, paint); |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 292 | } |
| 293 | |
Matt Sarett | be3bdd9 | 2016-12-12 18:35:43 -0500 | [diff] [blame] | 294 | void SkOverdrawCanvas::onDrawDrawable(SkDrawable* drawable, const SkMatrix* matrix) { |
| 295 | drawable->draw(this, matrix); |
| 296 | } |
| 297 | |
Matt Sarett | 22886c4 | 2016-11-22 11:31:41 -0500 | [diff] [blame] | 298 | void SkOverdrawCanvas::onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) { |
| 299 | SkASSERT(false); |
| 300 | return; |
| 301 | } |
Matt Sarett | 84503cc | 2016-11-23 13:13:42 -0500 | [diff] [blame] | 302 | |
| 303 | inline SkPaint SkOverdrawCanvas::overdrawPaint(const SkPaint& paint) { |
| 304 | SkPaint newPaint = fPaint; |
| 305 | newPaint.setStyle(paint.getStyle()); |
| 306 | newPaint.setStrokeWidth(paint.getStrokeWidth()); |
| 307 | return newPaint; |
| 308 | } |