Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "SkiaCanvasProxy.h" |
| 18 | |
| 19 | #include <cutils/log.h> |
| 20 | #include <SkPatchUtils.h> |
Tom Hudson | 17c5adf | 2015-06-09 15:46:04 -0400 | [diff] [blame^] | 21 | #include <SkPixelRef.h> |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 22 | |
| 23 | namespace android { |
| 24 | namespace uirenderer { |
| 25 | |
Tom Hudson | b1476ae | 2015-03-05 10:30:18 -0500 | [diff] [blame] | 26 | SkiaCanvasProxy::SkiaCanvasProxy(Canvas* canvas, bool filterHwuiCalls) |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 27 | : INHERITED(canvas->width(), canvas->height()) |
Tom Hudson | b1476ae | 2015-03-05 10:30:18 -0500 | [diff] [blame] | 28 | , mCanvas(canvas) |
| 29 | , mFilterHwuiCalls(filterHwuiCalls) {} |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 30 | |
| 31 | void SkiaCanvasProxy::onDrawPaint(const SkPaint& paint) { |
| 32 | mCanvas->drawPaint(paint); |
| 33 | } |
| 34 | |
| 35 | void SkiaCanvasProxy::onDrawPoints(PointMode pointMode, size_t count, const SkPoint pts[], |
| 36 | const SkPaint& paint) { |
Tom Hudson | b1476ae | 2015-03-05 10:30:18 -0500 | [diff] [blame] | 37 | if (!pts || count == 0) { |
| 38 | return; |
| 39 | } |
| 40 | |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 41 | // convert the SkPoints into floats |
| 42 | SK_COMPILE_ASSERT(sizeof(SkPoint) == sizeof(float)*2, SkPoint_is_no_longer_2_floats); |
| 43 | const size_t floatCount = count << 1; |
| 44 | const float* floatArray = &pts[0].fX; |
| 45 | |
| 46 | switch (pointMode) { |
| 47 | case kPoints_PointMode: { |
| 48 | mCanvas->drawPoints(floatArray, floatCount, paint); |
| 49 | break; |
| 50 | } |
| 51 | case kLines_PointMode: { |
| 52 | mCanvas->drawLines(floatArray, floatCount, paint); |
| 53 | break; |
| 54 | } |
| 55 | case kPolygon_PointMode: { |
| 56 | SkPaint strokedPaint(paint); |
| 57 | strokedPaint.setStyle(SkPaint::kStroke_Style); |
| 58 | |
| 59 | SkPath path; |
| 60 | for (size_t i = 0; i < count - 1; i++) { |
| 61 | path.moveTo(pts[i]); |
| 62 | path.lineTo(pts[i+1]); |
| 63 | this->drawPath(path, strokedPaint); |
| 64 | path.rewind(); |
| 65 | } |
| 66 | break; |
| 67 | } |
| 68 | default: |
| 69 | LOG_ALWAYS_FATAL("Unknown point type"); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | void SkiaCanvasProxy::onDrawOval(const SkRect& rect, const SkPaint& paint) { |
| 74 | mCanvas->drawOval(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, paint); |
| 75 | } |
| 76 | |
| 77 | void SkiaCanvasProxy::onDrawRect(const SkRect& rect, const SkPaint& paint) { |
| 78 | mCanvas->drawRect(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, paint); |
| 79 | } |
| 80 | |
| 81 | void SkiaCanvasProxy::onDrawRRect(const SkRRect& roundRect, const SkPaint& paint) { |
| 82 | if (!roundRect.isComplex()) { |
| 83 | const SkRect& rect = roundRect.rect(); |
| 84 | SkVector radii = roundRect.getSimpleRadii(); |
| 85 | mCanvas->drawRoundRect(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, |
| 86 | radii.fX, radii.fY, paint); |
| 87 | } else { |
| 88 | SkPath path; |
| 89 | path.addRRect(roundRect); |
| 90 | mCanvas->drawPath(path, paint); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | void SkiaCanvasProxy::onDrawPath(const SkPath& path, const SkPaint& paint) { |
| 95 | mCanvas->drawPath(path, paint); |
| 96 | } |
| 97 | |
| 98 | void SkiaCanvasProxy::onDrawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top, |
| 99 | const SkPaint* paint) { |
Tom Hudson | 17c5adf | 2015-06-09 15:46:04 -0400 | [diff] [blame^] | 100 | SkPixelRef* pxRef = bitmap.pixelRef(); |
| 101 | |
| 102 | // HWUI doesn't support extractSubset(), so convert any subsetted bitmap into |
| 103 | // a drawBitmapRect(); pass through an un-subsetted bitmap. |
| 104 | if (pxRef && bitmap.dimensions() != pxRef->info().dimensions()) { |
| 105 | SkBitmap fullBitmap; |
| 106 | fullBitmap.setInfo(pxRef->info()); |
| 107 | fullBitmap.setPixelRef(pxRef, 0, 0); |
| 108 | SkIPoint origin = bitmap.pixelRefOrigin(); |
| 109 | mCanvas->drawBitmap(fullBitmap, origin.fX, origin.fY, |
| 110 | origin.fX + bitmap.dimensions().width(), |
| 111 | origin.fY + bitmap.dimensions().height(), |
| 112 | left, top, |
| 113 | left + bitmap.dimensions().width(), |
| 114 | top + bitmap.dimensions().height(), |
| 115 | paint); |
| 116 | } else { |
| 117 | mCanvas->drawBitmap(bitmap, left, top, paint); |
| 118 | } |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | void SkiaCanvasProxy::onDrawBitmapRect(const SkBitmap& bitmap, const SkRect* srcPtr, |
| 122 | const SkRect& dst, const SkPaint* paint, DrawBitmapRectFlags) { |
| 123 | SkRect src = (srcPtr) ? *srcPtr : SkRect::MakeWH(bitmap.width(), bitmap.height()); |
Tom Hudson | 17c5adf | 2015-06-09 15:46:04 -0400 | [diff] [blame^] | 124 | // TODO: if bitmap is a subset, do we need to add pixelRefOrigin to src? |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 125 | mCanvas->drawBitmap(bitmap, src.fLeft, src.fTop, src.fRight, src.fBottom, |
| 126 | dst.fLeft, dst.fTop, dst.fRight, dst.fBottom, paint); |
| 127 | } |
| 128 | |
| 129 | void SkiaCanvasProxy::onDrawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, |
| 130 | const SkRect& dst, const SkPaint*) { |
| 131 | //TODO make nine-patch drawing a method on Canvas.h |
| 132 | SkDEBUGFAIL("SkiaCanvasProxy::onDrawBitmapNine is not yet supported"); |
| 133 | } |
| 134 | |
| 135 | void SkiaCanvasProxy::onDrawSprite(const SkBitmap& bitmap, int left, int top, |
| 136 | const SkPaint* paint) { |
Tom Hudson | 17c5adf | 2015-06-09 15:46:04 -0400 | [diff] [blame^] | 137 | // TODO: if bitmap is a subset, do we need to add pixelRefOrigin to src? |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 138 | mCanvas->save(SkCanvas::kMatrixClip_SaveFlag); |
| 139 | mCanvas->setMatrix(SkMatrix::I()); |
| 140 | mCanvas->drawBitmap(bitmap, left, top, paint); |
| 141 | mCanvas->restore(); |
| 142 | } |
| 143 | |
| 144 | void SkiaCanvasProxy::onDrawVertices(VertexMode mode, int vertexCount, const SkPoint vertices[], |
| 145 | const SkPoint texs[], const SkColor colors[], SkXfermode*, const uint16_t indices[], |
| 146 | int indexCount, const SkPaint& paint) { |
Tom Hudson | b1476ae | 2015-03-05 10:30:18 -0500 | [diff] [blame] | 147 | if (mFilterHwuiCalls) { |
| 148 | return; |
| 149 | } |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 150 | // convert the SkPoints into floats |
| 151 | SK_COMPILE_ASSERT(sizeof(SkPoint) == sizeof(float)*2, SkPoint_is_no_longer_2_floats); |
| 152 | const int floatCount = vertexCount << 1; |
| 153 | const float* vArray = &vertices[0].fX; |
| 154 | const float* tArray = (texs) ? &texs[0].fX : NULL; |
| 155 | const int* cArray = (colors) ? (int*)colors : NULL; |
| 156 | mCanvas->drawVertices(mode, floatCount, vArray, tArray, cArray, indices, indexCount, paint); |
| 157 | } |
| 158 | |
| 159 | SkSurface* SkiaCanvasProxy::onNewSurface(const SkImageInfo&, const SkSurfaceProps&) { |
| 160 | SkDEBUGFAIL("SkiaCanvasProxy::onNewSurface is not supported"); |
| 161 | return NULL; |
| 162 | } |
| 163 | |
| 164 | void SkiaCanvasProxy::willSave() { |
| 165 | mCanvas->save(SkCanvas::kMatrixClip_SaveFlag); |
| 166 | } |
| 167 | |
| 168 | SkCanvas::SaveLayerStrategy SkiaCanvasProxy::willSaveLayer(const SkRect* rectPtr, |
| 169 | const SkPaint* paint, SaveFlags flags) { |
| 170 | SkRect rect; |
| 171 | if (rectPtr) { |
| 172 | rect = *rectPtr; |
| 173 | } else if(!mCanvas->getClipBounds(&rect)) { |
| 174 | rect = SkRect::MakeEmpty(); |
| 175 | } |
| 176 | mCanvas->saveLayer(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, paint, flags); |
| 177 | return SkCanvas::kNoLayer_SaveLayerStrategy; |
| 178 | } |
| 179 | |
| 180 | void SkiaCanvasProxy::willRestore() { |
| 181 | mCanvas->restore(); |
| 182 | } |
| 183 | |
| 184 | void SkiaCanvasProxy::didConcat(const SkMatrix& matrix) { |
| 185 | mCanvas->concat(matrix); |
| 186 | } |
| 187 | |
| 188 | void SkiaCanvasProxy::didSetMatrix(const SkMatrix& matrix) { |
| 189 | mCanvas->setMatrix(matrix); |
| 190 | } |
| 191 | |
| 192 | void SkiaCanvasProxy::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, |
| 193 | const SkPaint& paint) { |
| 194 | SkPath path; |
| 195 | path.addRRect(outer); |
| 196 | path.addRRect(inner); |
| 197 | path.setFillType(SkPath::kEvenOdd_FillType); |
| 198 | this->drawPath(path, paint); |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Utility class that converts the incoming text & paint from the given encoding |
| 203 | * into glyphIDs. |
| 204 | */ |
| 205 | class GlyphIDConverter { |
| 206 | public: |
| 207 | GlyphIDConverter(const void* text, size_t byteLength, const SkPaint& origPaint) { |
| 208 | paint = origPaint; |
| 209 | if (paint.getTextEncoding() == SkPaint::kGlyphID_TextEncoding) { |
| 210 | glyphIDs = (uint16_t*)text; |
| 211 | count = byteLength >> 1; |
| 212 | } else { |
| 213 | storage.reset(byteLength); // ensures space for one glyph per ID given UTF8 encoding. |
| 214 | glyphIDs = storage.get(); |
| 215 | count = paint.textToGlyphs(text, byteLength, storage.get()); |
| 216 | paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | SkPaint paint; |
| 221 | uint16_t* glyphIDs; |
| 222 | int count; |
| 223 | private: |
| 224 | SkAutoSTMalloc<32, uint16_t> storage; |
| 225 | }; |
| 226 | |
| 227 | void SkiaCanvasProxy::onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, |
| 228 | const SkPaint& origPaint) { |
| 229 | // convert to glyphIDs if necessary |
| 230 | GlyphIDConverter glyphs(text, byteLength, origPaint); |
| 231 | |
| 232 | // compute the glyph positions |
| 233 | SkAutoSTMalloc<32, SkPoint> pointStorage(glyphs.count); |
| 234 | SkAutoSTMalloc<32, SkScalar> glyphWidths(glyphs.count); |
| 235 | glyphs.paint.getTextWidths(glyphs.glyphIDs, glyphs.count << 1, glyphWidths.get()); |
| 236 | |
| 237 | // compute conservative bounds |
| 238 | // NOTE: We could call the faster paint.getFontBounds for a less accurate, |
| 239 | // but even more conservative bounds if this is too slow. |
| 240 | SkRect bounds; |
| 241 | glyphs.paint.measureText(glyphs.glyphIDs, glyphs.count << 1, &bounds); |
| 242 | |
| 243 | // adjust for non-left alignment |
| 244 | if (glyphs.paint.getTextAlign() != SkPaint::kLeft_Align) { |
| 245 | SkScalar stop = 0; |
| 246 | for (int i = 0; i < glyphs.count; i++) { |
| 247 | stop += glyphWidths[i]; |
| 248 | } |
| 249 | if (glyphs.paint.getTextAlign() == SkPaint::kCenter_Align) { |
| 250 | stop = SkScalarHalf(stop); |
| 251 | } |
| 252 | if (glyphs.paint.isVerticalText()) { |
| 253 | y -= stop; |
| 254 | } else { |
| 255 | x -= stop; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | // setup the first glyph position and adjust bounds if needed |
Tom Hudson | 806a6f0 | 2015-02-19 17:11:32 -0500 | [diff] [blame] | 260 | int xBaseline = 0; |
| 261 | int yBaseline = 0; |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 262 | if (mCanvas->drawTextAbsolutePos()) { |
| 263 | bounds.offset(x,y); |
Tom Hudson | 806a6f0 | 2015-02-19 17:11:32 -0500 | [diff] [blame] | 264 | xBaseline = x; |
| 265 | yBaseline = y; |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 266 | } |
Tom Hudson | 806a6f0 | 2015-02-19 17:11:32 -0500 | [diff] [blame] | 267 | pointStorage[0].set(xBaseline, yBaseline); |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 268 | |
| 269 | // setup the remaining glyph positions |
| 270 | if (glyphs.paint.isVerticalText()) { |
| 271 | for (int i = 1; i < glyphs.count; i++) { |
Tom Hudson | 806a6f0 | 2015-02-19 17:11:32 -0500 | [diff] [blame] | 272 | pointStorage[i].set(xBaseline, glyphWidths[i-1] + pointStorage[i-1].fY); |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 273 | } |
| 274 | } else { |
| 275 | for (int i = 1; i < glyphs.count; i++) { |
Tom Hudson | 806a6f0 | 2015-02-19 17:11:32 -0500 | [diff] [blame] | 276 | pointStorage[i].set(glyphWidths[i-1] + pointStorage[i-1].fX, yBaseline); |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 277 | } |
| 278 | } |
| 279 | |
| 280 | SK_COMPILE_ASSERT(sizeof(SkPoint) == sizeof(float)*2, SkPoint_is_no_longer_2_floats); |
| 281 | mCanvas->drawText(glyphs.glyphIDs, &pointStorage[0].fX, glyphs.count, glyphs.paint, |
| 282 | x, y, bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom, 0); |
| 283 | } |
| 284 | |
| 285 | void SkiaCanvasProxy::onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[], |
| 286 | const SkPaint& origPaint) { |
| 287 | // convert to glyphIDs if necessary |
| 288 | GlyphIDConverter glyphs(text, byteLength, origPaint); |
| 289 | |
| 290 | // convert to relative positions if necessary |
| 291 | int x, y; |
| 292 | const SkPoint* posArray; |
| 293 | SkAutoSTMalloc<32, SkPoint> pointStorage; |
| 294 | if (mCanvas->drawTextAbsolutePos()) { |
| 295 | x = 0; |
| 296 | y = 0; |
| 297 | posArray = pos; |
| 298 | } else { |
| 299 | x = pos[0].fX; |
| 300 | y = pos[0].fY; |
| 301 | posArray = pointStorage.reset(glyphs.count); |
| 302 | for (int i = 0; i < glyphs.count; i++) { |
| 303 | pointStorage[i].fX = pos[i].fX- x; |
| 304 | pointStorage[i].fY = pos[i].fY- y; |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | // compute conservative bounds |
| 309 | // NOTE: We could call the faster paint.getFontBounds for a less accurate, |
| 310 | // but even more conservative bounds if this is too slow. |
| 311 | SkRect bounds; |
| 312 | glyphs.paint.measureText(glyphs.glyphIDs, glyphs.count << 1, &bounds); |
Tom Hudson | 20c2b3e | 2015-04-15 13:54:32 -0400 | [diff] [blame] | 313 | bounds.offset(x, y); |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 314 | |
| 315 | SK_COMPILE_ASSERT(sizeof(SkPoint) == sizeof(float)*2, SkPoint_is_no_longer_2_floats); |
| 316 | mCanvas->drawText(glyphs.glyphIDs, &posArray[0].fX, glyphs.count, glyphs.paint, x, y, |
| 317 | bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom, 0); |
| 318 | } |
| 319 | |
| 320 | void SkiaCanvasProxy::onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[], |
| 321 | SkScalar constY, const SkPaint& paint) { |
| 322 | const size_t pointCount = byteLength >> 1; |
| 323 | SkAutoSTMalloc<32, SkPoint> storage(pointCount); |
| 324 | SkPoint* pts = storage.get(); |
| 325 | for (size_t i = 0; i < pointCount; i++) { |
| 326 | pts[i].set(xpos[i], constY); |
| 327 | } |
| 328 | this->onDrawPosText(text, byteLength, pts, paint); |
| 329 | } |
| 330 | |
| 331 | void SkiaCanvasProxy::onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path, |
| 332 | const SkMatrix* matrix, const SkPaint& origPaint) { |
| 333 | // convert to glyphIDs if necessary |
| 334 | GlyphIDConverter glyphs(text, byteLength, origPaint); |
| 335 | mCanvas->drawTextOnPath(glyphs.glyphIDs, glyphs.count, path, 0, 0, glyphs.paint); |
| 336 | } |
| 337 | |
| 338 | void SkiaCanvasProxy::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, |
| 339 | const SkPaint& paint) { |
| 340 | SkDEBUGFAIL("SkiaCanvasProxy::onDrawTextBlob is not supported"); |
| 341 | } |
| 342 | |
| 343 | void SkiaCanvasProxy::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], |
| 344 | const SkPoint texCoords[4], SkXfermode* xmode, const SkPaint& paint) { |
Tom Hudson | b1476ae | 2015-03-05 10:30:18 -0500 | [diff] [blame] | 345 | if (mFilterHwuiCalls) { |
| 346 | return; |
| 347 | } |
Derek Sollenberger | 1db141f | 2014-12-16 08:37:20 -0500 | [diff] [blame] | 348 | SkPatchUtils::VertexData data; |
| 349 | |
| 350 | SkMatrix matrix; |
| 351 | mCanvas->getMatrix(&matrix); |
| 352 | SkISize lod = SkPatchUtils::GetLevelOfDetail(cubics, &matrix); |
| 353 | |
| 354 | // It automatically adjusts lodX and lodY in case it exceeds the number of indices. |
| 355 | // If it fails to generate the vertices, then we do not draw. |
| 356 | if (SkPatchUtils::getVertexData(&data, cubics, colors, texCoords, lod.width(), lod.height())) { |
| 357 | this->drawVertices(SkCanvas::kTriangles_VertexMode, data.fVertexCount, data.fPoints, |
| 358 | data.fTexCoords, data.fColors, xmode, data.fIndices, data.fIndexCount, |
| 359 | paint); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | void SkiaCanvasProxy::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle) { |
| 364 | mCanvas->clipRect(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, op); |
| 365 | } |
| 366 | |
| 367 | void SkiaCanvasProxy::onClipRRect(const SkRRect& roundRect, SkRegion::Op op, ClipEdgeStyle) { |
| 368 | SkPath path; |
| 369 | path.addRRect(roundRect); |
| 370 | mCanvas->clipPath(&path, op); |
| 371 | } |
| 372 | |
| 373 | void SkiaCanvasProxy::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle) { |
| 374 | mCanvas->clipPath(&path, op); |
| 375 | } |
| 376 | |
| 377 | void SkiaCanvasProxy::onClipRegion(const SkRegion& region, SkRegion::Op op) { |
| 378 | mCanvas->clipRegion(®ion, op); |
| 379 | } |
| 380 | |
| 381 | }; // namespace uirenderer |
| 382 | }; // namespace android |