| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "Test.h" |
| #include "SkBitmapDevice.h" |
| #include "SkCanvas.h" |
| #include "SkCanvasStateUtils.h" |
| #include "SkDrawFilter.h" |
| #include "SkError.h" |
| #include "SkPaint.h" |
| #include "SkRect.h" |
| #include "SkRRect.h" |
| |
| static void test_complex_layers(skiatest::Reporter* reporter) { |
| const int WIDTH = 400; |
| const int HEIGHT = 400; |
| const int SPACER = 10; |
| |
| SkRect rect = SkRect::MakeXYWH(SkIntToScalar(SPACER), SkIntToScalar(SPACER), |
| SkIntToScalar(WIDTH-(2*SPACER)), |
| SkIntToScalar((HEIGHT-(2*SPACER)) / 7)); |
| |
| const SkBitmap::Config configs[] = { SkBitmap::kRGB_565_Config, |
| SkBitmap::kARGB_8888_Config |
| }; |
| const int configCount = sizeof(configs) / sizeof(SkBitmap::Config); |
| |
| const int layerAlpha[] = { 255, 255, 0 }; |
| const SkCanvas::SaveFlags flags[] = { SkCanvas::kARGB_NoClipLayer_SaveFlag, |
| SkCanvas::kARGB_ClipLayer_SaveFlag, |
| SkCanvas::kARGB_NoClipLayer_SaveFlag |
| }; |
| REPORTER_ASSERT(reporter, sizeof(layerAlpha) == sizeof(flags)); |
| const int layerCombinations = sizeof(layerAlpha) / sizeof(int); |
| |
| for (int i = 0; i < configCount; ++i) { |
| SkBitmap bitmaps[2]; |
| for (int j = 0; j < 2; ++j) { |
| bitmaps[j].setConfig(configs[i], WIDTH, HEIGHT); |
| bitmaps[j].allocPixels(); |
| |
| SkCanvas canvas(bitmaps[j]); |
| |
| canvas.drawColor(SK_ColorRED); |
| |
| for (int k = 0; k < layerCombinations; ++k) { |
| // draw a rect within the layer's bounds and again outside the layer's bounds |
| canvas.saveLayerAlpha(&rect, layerAlpha[k], flags[k]); |
| |
| SkCanvasState* state = NULL; |
| SkCanvas* tmpCanvas = NULL; |
| if (j) { |
| state = SkCanvasStateUtils::CaptureCanvasState(&canvas); |
| REPORTER_ASSERT(reporter, state); |
| tmpCanvas = SkCanvasStateUtils::CreateFromCanvasState(state); |
| REPORTER_ASSERT(reporter, tmpCanvas); |
| } else { |
| tmpCanvas = SkRef(&canvas); |
| } |
| |
| SkPaint bluePaint; |
| bluePaint.setColor(SK_ColorBLUE); |
| bluePaint.setStyle(SkPaint::kFill_Style); |
| |
| tmpCanvas->drawRect(rect, bluePaint); |
| tmpCanvas->translate(0, rect.height() + SPACER); |
| tmpCanvas->drawRect(rect, bluePaint); |
| |
| tmpCanvas->unref(); |
| SkCanvasStateUtils::ReleaseCanvasState(state); |
| |
| canvas.restore(); |
| |
| // translate the canvas for the next iteration |
| canvas.translate(0, 2*(rect.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())); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| static void test_complex_clips(skiatest::Reporter* 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::SaveFlags flags[] = { SkCanvas::kARGB_NoClipLayer_SaveFlag, |
| SkCanvas::kARGB_ClipLayer_SaveFlag, |
| SkCanvas::kARGB_NoClipLayer_SaveFlag, |
| }; |
| REPORTER_ASSERT(reporter, sizeof(clipOps) == sizeof(flags)); |
| const int layerCombinations = sizeof(flags) / sizeof(SkCanvas::SaveFlags); |
| |
| SkBitmap bitmaps[2]; |
| for (int i = 0; i < 2; ++i) { |
| bitmaps[i].setConfig(SkBitmap::kARGB_8888_Config, WIDTH, HEIGHT); |
| bitmaps[i].allocPixels(); |
| |
| SkCanvas canvas(bitmaps[i]); |
| |
| canvas.drawColor(SK_ColorRED); |
| |
| SkRegion localRegion = clipRegion; |
| |
| for (int j = 0; j < layerCombinations; ++j) { |
| SkRect layerBounds = SkRect::Make(layerRect); |
| canvas.saveLayerAlpha(&layerBounds, 128, flags[j]); |
| |
| SkCanvasState* state = NULL; |
| SkCanvas* tmpCanvas = NULL; |
| if (i) { |
| state = SkCanvasStateUtils::CaptureCanvasState(&canvas); |
| REPORTER_ASSERT(reporter, state); |
| tmpCanvas = SkCanvasStateUtils::CreateFromCanvasState(state); |
| REPORTER_ASSERT(reporter, tmpCanvas); |
| } else { |
| tmpCanvas = SkRef(&canvas); |
| } |
| |
| tmpCanvas->save(); |
| tmpCanvas->clipRect(SkRect::Make(clipRect), clipOps[j]); |
| tmpCanvas->drawColor(SK_ColorBLUE); |
| tmpCanvas->restore(); |
| |
| tmpCanvas->clipRegion(localRegion, clipOps[j]); |
| tmpCanvas->drawColor(SK_ColorBLUE); |
| |
| tmpCanvas->unref(); |
| SkCanvasStateUtils::ReleaseCanvasState(state); |
| |
| 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())); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| class TestDrawFilter : public SkDrawFilter { |
| public: |
| virtual bool filter(SkPaint*, Type) SK_OVERRIDE { return true; } |
| }; |
| |
| static void test_draw_filters(skiatest::Reporter* reporter) { |
| TestDrawFilter drawFilter; |
| SkBitmapDevice device(SkBitmap::kARGB_8888_Config, 10, 10); |
| SkCanvas canvas(&device); |
| |
| canvas.setDrawFilter(&drawFilter); |
| |
| SkCanvasState* state = SkCanvasStateUtils::CaptureCanvasState(&canvas); |
| REPORTER_ASSERT(reporter, state); |
| SkCanvas* tmpCanvas = SkCanvasStateUtils::CreateFromCanvasState(state); |
| REPORTER_ASSERT(reporter, tmpCanvas); |
| |
| REPORTER_ASSERT(reporter, NULL != canvas.getDrawFilter()); |
| REPORTER_ASSERT(reporter, NULL == tmpCanvas->getDrawFilter()); |
| |
| tmpCanvas->unref(); |
| SkCanvasStateUtils::ReleaseCanvasState(state); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| // we need this function to prevent SkError from printing to stdout |
| static void error_callback(SkError code, void* ctx) {} |
| |
| static void test_soft_clips(skiatest::Reporter* reporter) { |
| SkBitmapDevice device(SkBitmap::kARGB_8888_Config, 10, 10); |
| SkCanvas canvas(&device); |
| |
| SkRRect roundRect; |
| roundRect.setOval(SkRect::MakeWH(5, 5)); |
| |
| canvas.clipRRect(roundRect, SkRegion::kIntersect_Op, true); |
| |
| SkSetErrorCallback(error_callback, NULL); |
| |
| SkCanvasState* state = SkCanvasStateUtils::CaptureCanvasState(&canvas); |
| REPORTER_ASSERT(reporter, !state); |
| |
| REPORTER_ASSERT(reporter, kInvalidOperation_SkError == SkGetLastError()); |
| SkClearLastError(); |
| } |
| |
| DEF_TEST(CanvasState, reporter) { |
| test_complex_layers(reporter); |
| test_complex_clips(reporter); |
| test_draw_filters(reporter); |
| test_soft_clips(reporter); |
| } |