| /* |
| * 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 "include/core/SkAlphaType.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorType.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageGenerator.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkTypes.h" |
| #include "include/private/SkColorData.h" |
| #include "src/core/SkOpts.h" |
| #include "tests/Test.h" |
| #include "tools/ToolUtils.h" |
| |
| #include <array> |
| #include <cstddef> |
| #include <cstdint> |
| #include <memory> |
| #include <utility> |
| |
| class TestImageGenerator : public SkImageGenerator { |
| public: |
| enum TestType { |
| kFailGetPixels_TestType, |
| kSucceedGetPixels_TestType, |
| kLast_TestType = kSucceedGetPixels_TestType |
| }; |
| static int Width() { return 10; } |
| static int Height() { return 10; } |
| // value choosen so that there is no loss when converting to to RGB565 and back |
| static SkColor Color() { return ToolUtils::color_to_565(0xffaabbcc); } |
| static SkPMColor PMColor() { return SkPreMultiplyColor(Color()); } |
| |
| TestImageGenerator(TestType type, skiatest::Reporter* reporter, |
| SkColorType colorType = kN32_SkColorType) |
| : INHERITED(GetMyInfo(colorType)), fType(type), fReporter(reporter) { |
| SkASSERT((fType <= kLast_TestType) && (fType >= 0)); |
| } |
| ~TestImageGenerator() override {} |
| |
| protected: |
| static SkImageInfo GetMyInfo(SkColorType colorType) { |
| return SkImageInfo::Make(TestImageGenerator::Width(), TestImageGenerator::Height(), |
| colorType, kOpaque_SkAlphaType); |
| } |
| |
| bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, |
| const Options& options) override { |
| REPORTER_ASSERT(fReporter, pixels != nullptr); |
| REPORTER_ASSERT(fReporter, rowBytes >= info.minRowBytes()); |
| if (fType != kSucceedGetPixels_TestType) { |
| return false; |
| } |
| if (info.colorType() != kN32_SkColorType && info.colorType() != getInfo().colorType()) { |
| return false; |
| } |
| char* bytePtr = static_cast<char*>(pixels); |
| switch (info.colorType()) { |
| case kN32_SkColorType: |
| for (int y = 0; y < info.height(); ++y) { |
| SkOpts::memset32((uint32_t*)bytePtr, |
| TestImageGenerator::PMColor(), info.width()); |
| bytePtr += rowBytes; |
| } |
| break; |
| case kRGB_565_SkColorType: |
| for (int y = 0; y < info.height(); ++y) { |
| SkOpts::memset16((uint16_t*)bytePtr, |
| SkPixel32ToPixel16(TestImageGenerator::PMColor()), info.width()); |
| bytePtr += rowBytes; |
| } |
| break; |
| default: |
| return false; |
| } |
| return true; |
| } |
| |
| private: |
| const TestType fType; |
| skiatest::Reporter* const fReporter; |
| |
| using INHERITED = SkImageGenerator; |
| }; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_TEST(Image_NewFromGenerator, r) { |
| const TestImageGenerator::TestType testTypes[] = { |
| TestImageGenerator::kFailGetPixels_TestType, |
| TestImageGenerator::kSucceedGetPixels_TestType, |
| }; |
| const SkColorType testColorTypes[] = { |
| kN32_SkColorType, |
| kRGB_565_SkColorType |
| }; |
| for (size_t i = 0; i < std::size(testTypes); ++i) { |
| TestImageGenerator::TestType test = testTypes[i]; |
| for (const SkColorType testColorType : testColorTypes) { |
| auto gen = std::make_unique<TestImageGenerator>(test, r, testColorType); |
| sk_sp<SkImage> image(SkImage::MakeFromGenerator(std::move(gen))); |
| if (nullptr == image) { |
| ERRORF(r, "SkImage::NewFromGenerator unexpecedly failed [%zu]", i); |
| continue; |
| } |
| REPORTER_ASSERT(r, TestImageGenerator::Width() == image->width()); |
| REPORTER_ASSERT(r, TestImageGenerator::Height() == image->height()); |
| REPORTER_ASSERT(r, image->isLazyGenerated()); |
| |
| SkBitmap bitmap; |
| bitmap.allocN32Pixels(TestImageGenerator::Width(), TestImageGenerator::Height()); |
| SkCanvas canvas(bitmap); |
| const SkColor kDefaultColor = 0xffabcdef; |
| canvas.clear(kDefaultColor); |
| canvas.drawImage(image, 0, 0); |
| if (TestImageGenerator::kSucceedGetPixels_TestType == test) { |
| REPORTER_ASSERT( |
| r, TestImageGenerator::Color() == bitmap.getColor(0, 0)); |
| } |
| else { |
| REPORTER_ASSERT(r, kDefaultColor == bitmap.getColor(0, 0)); |
| } |
| } |
| } |
| } |