74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
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/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "Resources.h"
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namespace skiagm {
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class BitmapImageGM : public GM {
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public:
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BitmapImageGM() {}
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protected:
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SkString onShortName() override {
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return SkString("bitmap-image-srgb-linear");
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}
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SkISize onISize() override {
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return SkISize::Make(2*kSize, 2*kSize);
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}
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void onDraw(SkCanvas* canvas) override {
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// Create image.
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sk_sp<SkImage> image = GetResourceAsImage("mandrill_512_q075.jpg");
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if (!image) {
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SkDebugf("Failure: Is the resource path set properly?");
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return;
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}
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// Create matching bitmap.
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SkBitmap bitmap;
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SkAssertResult(image->asLegacyBitmap(&bitmap, SkImage::kRO_LegacyBitmapMode));
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// The GM will be displayed in a 2x2 grid.
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// The top two squares show an sRGB image, then bitmap, drawn to a linear canvas.
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SkImageInfo linearInfo = SkImageInfo::MakeN32(2*kSize, kSize, kOpaque_SkAlphaType);
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SkBitmap linearBMCanvas;
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linearBMCanvas.allocPixels(linearInfo);
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SkCanvas linearCanvas(linearBMCanvas);
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linearCanvas.drawImage(image, 0.0f, 0.0f, nullptr);
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linearCanvas.translate(SkScalar(kSize), 0.0f);
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linearCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
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canvas->drawBitmap(linearBMCanvas, 0.0f, 0.0f, nullptr);
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canvas->translate(0.0f, SkScalar(kSize));
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// The bottom two squares show an sRGB image, then bitmap, drawn to a srgb canvas.
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SkImageInfo srgbInfo = SkImageInfo::MakeS32(2*kSize, kSize, kOpaque_SkAlphaType);
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SkBitmap srgbBMCanvas;
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srgbBMCanvas.allocPixels(srgbInfo);
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SkCanvas srgbCanvas(srgbBMCanvas);
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srgbCanvas.drawImage(image, 0.0f, 0.0f, nullptr);
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srgbCanvas.translate(SkScalar(kSize), 0.0f);
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srgbCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
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canvas->drawBitmap(srgbBMCanvas, 0.0f, 0.0f, nullptr);
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}
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private:
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static constexpr int kSize = 512;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new BitmapImageGM; }
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static GMRegistry reg(MyFactory);
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}
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