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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "Resources.h"
#include "SkCodec.h"
#include "SkColorSpace_Base.h"
#include "SkImage.h"
#include "SkImagePriv.h"
sk_sp<SkImage> make_raster_image(const char* path, SkTransferFunctionBehavior behavior) {
SkString resourcePath = GetResourcePath(path);
sk_sp<SkData> resourceData = SkData::MakeFromFileName(resourcePath.c_str());
std::unique_ptr<SkCodec> codec(SkCodec::NewFromData(resourceData));
SkBitmap bitmap;
bitmap.allocPixels(codec->getInfo());
SkCodec::Options opts;
opts.fPremulBehavior = behavior;
codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes(), &opts,
nullptr, nullptr);
return SkImage::MakeFromBitmap(bitmap);
}
sk_sp<SkImage> make_color_space(sk_sp<SkImage> orig, sk_sp<SkColorSpace> colorSpace,
SkTransferFunctionBehavior behavior) {
sk_sp<SkImage> xform = orig->makeColorSpace(colorSpace, behavior);
// Assign an sRGB color space on the xformed image, so we can see the effects of the xform
// when we draw.
sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
if (colorSpace->gammaIsLinear()) {
srgb = SkColorSpace::MakeSRGBLinear();
}
return SkImageMakeRasterCopyAndAssignColorSpace(xform.get(), srgb.get());
}
class MakeCSGM : public skiagm::GM {
public:
MakeCSGM() {}
protected:
SkString onShortName() override {
return SkString("makecolorspace");
}
SkISize onISize() override {
return SkISize::Make(128*3, 128*4);
}
void onDraw(SkCanvas* canvas) override {
SkTransferFunctionBehavior behavior = canvas->imageInfo().colorSpace() ?
SkTransferFunctionBehavior::kRespect : SkTransferFunctionBehavior::kIgnore;
sk_sp<SkColorSpace> wideGamut = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
SkColorSpace::kAdobeRGB_Gamut);
sk_sp<SkColorSpace> wideGamutLinear = as_CSB(wideGamut)->makeLinearGamma();
// Lazy images
sk_sp<SkImage> opaqueImage = GetResourceAsImage("mandrill_128.png");
sk_sp<SkImage> premulImage = GetResourceAsImage("color_wheel.png");
canvas->drawImage(opaqueImage, 0.0f, 0.0f);
canvas->drawImage(make_color_space(opaqueImage, wideGamut, behavior), 128.0f, 0.0f);
canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear, behavior), 256.0f, 0.0f);
canvas->drawImage(premulImage, 0.0f, 128.0f);
canvas->drawImage(make_color_space(premulImage, wideGamut, behavior), 128.0f, 128.0f);
canvas->drawImage(make_color_space(premulImage, wideGamutLinear, behavior), 256.0f, 128.0f);
canvas->translate(0.0f, 256.0f);
// Raster images
opaqueImage = make_raster_image("mandrill_128.png", behavior);
premulImage = make_raster_image("color_wheel.png", behavior);
canvas->drawImage(opaqueImage, 0.0f, 0.0f);
canvas->drawImage(make_color_space(opaqueImage, wideGamut, behavior), 128.0f, 0.0f);
canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear, behavior), 256.0f, 0.0f);
canvas->drawImage(premulImage, 0.0f, 128.0f);
canvas->drawImage(make_color_space(premulImage, wideGamut, behavior), 128.0f, 128.0f);
canvas->drawImage(make_color_space(premulImage, wideGamutLinear, behavior), 256.0f, 128.0f);
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM(return new MakeCSGM;)
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