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78 lines
2.4 KiB
78 lines
2.4 KiB
4 months ago
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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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#include "SkCodec.h"
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#include "SkImage.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-legacy");
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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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const char* path = "images/mandrill_512_q075.jpg";
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sk_sp<SkImage> image = GetResourceAsImage(path);
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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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std::unique_ptr<SkCodec> codec(SkCodec::MakeFromStream(GetResourceAsStream(path)));
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SkBitmap bitmap;
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bitmap.allocPixels(codec->getInfo());
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codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes());
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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 legacy canvas.
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SkImageInfo linearInfo = SkImageInfo::MakeN32(2*kSize, kSize, kOpaque_SkAlphaType);
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SkBitmap legacyBMCanvas;
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legacyBMCanvas.allocPixels(linearInfo);
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SkCanvas legacyCanvas(legacyBMCanvas);
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legacyCanvas.drawImage(image, 0.0f, 0.0f, nullptr);
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legacyCanvas.translate(SkScalar(kSize), 0.0f);
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legacyCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
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canvas->drawBitmap(legacyBMCanvas, 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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DEF_GM( return new BitmapImageGM; )
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}
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