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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/codec/SkCodec.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "tools/Resources.h"
#include <memory>
namespace skiagm {
class BitmapImageGM : public GM {
public:
BitmapImageGM() {}
protected:
SkString onShortName() override {
return SkString("bitmap-image-srgb-legacy");
}
SkISize onISize() override {
return SkISize::Make(2*kSize, 2*kSize);
}
DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
// Create image.
const char* path = "images/mandrill_512_q075.jpg";
sk_sp<SkImage> image = GetResourceAsImage(path);
if (!image) {
*errorMsg = "Couldn't load images/mandrill_512_q075.jpg. "
"Did you forget to set the resource path?";
return DrawResult::kFail;
}
// Create matching bitmap.
std::unique_ptr<SkCodec> codec(SkCodec::MakeFromStream(GetResourceAsStream(path)));
SkBitmap bitmap;
bitmap.allocPixels(codec->getInfo());
codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes());
// The GM will be displayed in a 2x2 grid.
// The top two squares show an sRGB image, then bitmap, drawn to a legacy canvas.
SkImageInfo linearInfo = SkImageInfo::MakeN32(2*kSize, kSize, kOpaque_SkAlphaType);
SkBitmap legacyBMCanvas;
legacyBMCanvas.allocPixels(linearInfo);
SkCanvas legacyCanvas(legacyBMCanvas);
legacyCanvas.drawImage(image, 0.0f, 0.0f, nullptr);
legacyCanvas.translate(SkScalar(kSize), 0.0f);
legacyCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
canvas->drawBitmap(legacyBMCanvas, 0.0f, 0.0f, nullptr);
canvas->translate(0.0f, SkScalar(kSize));
// The bottom two squares show an sRGB image, then bitmap, drawn to a srgb canvas.
SkImageInfo srgbInfo = SkImageInfo::MakeS32(2*kSize, kSize, kOpaque_SkAlphaType);
SkBitmap srgbBMCanvas;
srgbBMCanvas.allocPixels(srgbInfo);
SkCanvas srgbCanvas(srgbBMCanvas);
srgbCanvas.drawImage(image, 0.0f, 0.0f, nullptr);
srgbCanvas.translate(SkScalar(kSize), 0.0f);
srgbCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
canvas->drawBitmap(srgbBMCanvas, 0.0f, 0.0f, nullptr);
return DrawResult::kOk;
}
private:
static constexpr int kSize = 512;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new BitmapImageGM; )
}