extern "C" bool complex_clips_draw_from_canvas_state(SkCanvasState* state, int32_t left, int32_t top, int32_t right, int32_t bottom, int32_t clipOp, int32_t regionRects, int32_t* rectCoords) { std::unique_ptr<SkCanvas> canvas = SkCanvasStateUtils::MakeFromCanvasState(state); if (!canvas) { return false; } SkRegion localRegion; for (int32_t i = 0; i < regionRects; ++i) { localRegion.op(rectCoords[0], rectCoords[1], rectCoords[2], rectCoords[3], SkRegion::kUnion_Op); rectCoords += 4; } complex_clips_draw(canvas.get(), left, top, right, bottom, clipOp, localRegion); return true; }
DEF_TEST(CanvasState_test_complex_clips, reporter) { const int WIDTH = 400; const int HEIGHT = 400; const int SPACER = 10; SkIRect layerRect = SkIRect::MakeWH(WIDTH, HEIGHT / 4); layerRect.inset(2*SPACER, 2*SPACER); SkIRect clipRect = layerRect; clipRect.fRight = clipRect.fLeft + (clipRect.width() / 2) - (2*SPACER); clipRect.outset(SPACER, SPACER); SkIRect regionBounds = clipRect; regionBounds.offset(clipRect.width() + (2*SPACER), 0); SkIRect regionInterior = regionBounds; regionInterior.inset(SPACER*3, SPACER*3); SkRegion clipRegion; clipRegion.setRect(regionBounds); clipRegion.op(regionInterior, SkRegion::kDifference_Op); const SkRegion::Op clipOps[] = { SkRegion::kIntersect_Op, SkRegion::kIntersect_Op, SkRegion::kReplace_Op, }; const SkCanvas::SaveLayerFlags flags[] = { static_cast<SkCanvas::SaveLayerFlags>(SkCanvas::kDontClipToLayer_Legacy_SaveLayerFlag), 0, static_cast<SkCanvas::SaveLayerFlags>(SkCanvas::kDontClipToLayer_Legacy_SaveLayerFlag), }; REPORTER_ASSERT(reporter, sizeof(clipOps) == sizeof(flags)); bool (*drawFn)(SkCanvasState* state, int32_t l, int32_t t, int32_t r, int32_t b, int32_t clipOp, int32_t regionRects, int32_t* rectCoords); OpenLibResult openLibResult(reporter); if (openLibResult.handle() != nullptr) { *(void**) (&drawFn) = dlsym(openLibResult.handle(), "complex_clips_draw_from_canvas_state"); } else { drawFn = complex_clips_draw_from_canvas_state; } REPORTER_ASSERT(reporter, drawFn); if (!drawFn) { return; } SkBitmap bitmaps[2]; for (int i = 0; i < 2; ++i) { bitmaps[i].allocN32Pixels(WIDTH, HEIGHT); SkCanvas canvas(bitmaps[i]); canvas.drawColor(SK_ColorRED); SkRegion localRegion = clipRegion; SkPaint paint; paint.setAlpha(128); for (size_t j = 0; j < SK_ARRAY_COUNT(flags); ++j) { SkRect layerBounds = SkRect::Make(layerRect); canvas.saveLayer(SkCanvas::SaveLayerRec(&layerBounds, &paint, flags[j])); if (i) { SkCanvasState* state = SkCanvasStateUtils::CaptureCanvasState(&canvas); REPORTER_ASSERT(reporter, state); SkRegion::Iterator iter(localRegion); SkTDArray<int32_t> rectCoords; for (; !iter.done(); iter.next()) { const SkIRect& rect = iter.rect(); *rectCoords.append() = rect.fLeft; *rectCoords.append() = rect.fTop; *rectCoords.append() = rect.fRight; *rectCoords.append() = rect.fBottom; } bool success = drawFn(state, clipRect.fLeft, clipRect.fTop, clipRect.fRight, clipRect.fBottom, clipOps[j], rectCoords.count() / 4, rectCoords.begin()); REPORTER_ASSERT(reporter, success); SkCanvasStateUtils::ReleaseCanvasState(state); } else { complex_clips_draw(&canvas, clipRect.fLeft, clipRect.fTop, clipRect.fRight, clipRect.fBottom, clipOps[j], localRegion); } canvas.restore(); // translate the canvas and region for the next iteration canvas.translate(0, SkIntToScalar(2*(layerRect.height() + (SPACER)))); localRegion.translate(0, 2*(layerRect.height() + SPACER)); } } // now we memcmp the two bitmaps REPORTER_ASSERT(reporter, bitmaps[0].getSize() == bitmaps[1].getSize()); REPORTER_ASSERT(reporter, !memcmp(bitmaps[0].getPixels(), bitmaps[1].getPixels(), bitmaps[0].getSize())); }