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/*
* Copyright 2015 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 "SkCanvas.h"
#include "SkImage.h"
#include "SkImageCacherator.h"
#include "SkPictureRecorder.h"
#include "SkSurface.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrTexture.h"
#include "../src/image/SkImage_Gpu.h"
#endif
static void draw_something(SkCanvas* canvas, const SkRect& bounds) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorRED);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(10);
canvas->drawRect(bounds, paint);
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(SK_ColorBLUE);
canvas->drawOval(bounds, paint);
}
/*
* Exercise drawing pictures inside an image, showing that the image version is pixelated
* (correctly) when it is inside an image.
*/
class ImagePictGM : public skiagm::GM {
SkAutoTUnref<SkPicture> fPicture;
SkAutoTUnref<SkImage> fImage0;
SkAutoTUnref<SkImage> fImage1;
public:
ImagePictGM() {}
protected:
SkString onShortName() override {
return SkString("image-picture");
}
SkISize onISize() override {
return SkISize::Make(850, 450);
}
void onOnceBeforeDraw() override {
const SkRect bounds = SkRect::MakeXYWH(100, 100, 100, 100);
SkPictureRecorder recorder;
draw_something(recorder.beginRecording(bounds), bounds);
fPicture.reset(recorder.endRecording());
// extract enough just for the oval.
const SkISize size = SkISize::Make(100, 100);
SkMatrix matrix;
matrix.setTranslate(-100, -100);
fImage0.reset(SkImage::NewFromPicture(fPicture, size, &matrix, nullptr));
matrix.postTranslate(-50, -50);
matrix.postRotate(45);
matrix.postTranslate(50, 50);
fImage1.reset(SkImage::NewFromPicture(fPicture, size, &matrix, nullptr));
}
void drawSet(SkCanvas* canvas) const {
SkMatrix matrix = SkMatrix::MakeTrans(-100, -100);
canvas->drawPicture(fPicture, &matrix, nullptr);
canvas->drawImage(fImage0, 150, 0);
canvas->drawImage(fImage1, 300, 0);
}
void onDraw(SkCanvas* canvas) override {
canvas->translate(20, 20);
this->drawSet(canvas);
canvas->save();
canvas->translate(0, 130);
canvas->scale(0.25f, 0.25f);
this->drawSet(canvas);
canvas->restore();
canvas->save();
canvas->translate(0, 200);
canvas->scale(2, 2);
this->drawSet(canvas);
canvas->restore();
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new ImagePictGM; )
///////////////////////////////////////////////////////////////////////////////////////////////////
class ImageCacheratorGM : public skiagm::GM {
SkAutoTUnref<SkPicture> fPicture;
SkAutoTDelete<SkImageCacherator> fCache;
public:
ImageCacheratorGM() {}
protected:
SkString onShortName() override {
return SkString("image-cacherator");
}
SkISize onISize() override {
return SkISize::Make(850, 450);
}
void onOnceBeforeDraw() override {
const SkRect bounds = SkRect::MakeXYWH(100, 100, 100, 100);
SkPictureRecorder recorder;
draw_something(recorder.beginRecording(bounds), bounds);
fPicture.reset(recorder.endRecording());
// extract enough just for the oval.
const SkISize size = SkISize::Make(100, 100);
SkMatrix matrix;
matrix.setTranslate(-100, -100);
auto gen = SkImageGenerator::NewFromPicture(size, fPicture, &matrix, nullptr);
fCache.reset(SkImageCacherator::NewFromGenerator(gen));
}
void drawSet(SkCanvas* canvas) const {
SkMatrix matrix = SkMatrix::MakeTrans(-100, -100);
canvas->drawPicture(fPicture, &matrix, nullptr);
{
SkBitmap bitmap;
fCache->lockAsBitmap(&bitmap);
canvas->drawBitmap(bitmap, 150, 0);
}
#if SK_SUPPORT_GPU
{
SkAutoTUnref<GrTexture> texture(fCache->lockAsTexture(canvas->getGrContext(),
kUntiled_SkImageUsageType));
if (!texture) {
return;
}
// No API to draw a GrTexture directly, so we cheat and create a private image subclass
SkAutoTUnref<SkImage> image(new SkImage_Gpu(100, 100, fCache->generator()->uniqueID(),
kPremul_SkAlphaType, texture, 0,
SkSurface::kNo_Budgeted));
canvas->drawImage(image, 300, 0);
}
#endif
}
void onDraw(SkCanvas* canvas) override {
canvas->translate(20, 20);
this->drawSet(canvas);
canvas->save();
canvas->translate(0, 130);
canvas->scale(0.25f, 0.25f);
this->drawSet(canvas);
canvas->restore();
canvas->save();
canvas->translate(0, 200);
canvas->scale(2, 2);
this->drawSet(canvas);
canvas->restore();
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new ImageCacheratorGM; )
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