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/*
* Copyright 2011 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 "SkSurface.h"
#include "SkCanvas.h"
#include "SkStream.h"
#include "SkData.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
namespace skiagm {
extern GrContext* GetGr();
};
#endif
static SkData* fileToData(const char path[]) {
SkFILEStream stream(path);
if (!stream.isValid()) {
return SkData::NewEmpty();
}
size_t size = stream.getLength();
void* mem = sk_malloc_throw(size);
stream.read(mem, size);
return SkData::NewFromMalloc(mem, size);
}
static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
SkAutoDataUnref data(fileToData("/Users/mike/Downloads/skia.google.jpeg"));
SkImage* image = SkImage::NewEncodedData(data);
if (image) {
SkAutoCanvasRestore acr(canvas, true);
canvas->scale(size.width() * 1.0f / image->width(),
size.height() * 1.0f / image->height());
image->draw(canvas,0, 0, NULL);
image->unref();
}
}
static void drawContents(SkSurface* surface, SkColor fillC) {
SkSize size = SkSize::Make(SkIntToScalar(surface->width()),
SkIntToScalar(surface->height()));
SkCanvas* canvas = surface->getCanvas();
SkScalar stroke = size.fWidth / 10;
SkScalar radius = (size.fWidth - stroke) / 2;
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(fillC);
canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(stroke);
paint.setColor(SK_ColorBLACK);
canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
}
static void test_surface(SkCanvas* canvas, SkSurface* surf) {
drawContents(surf, SK_ColorRED);
SkImage* imgR = surf->newImageShapshot();
if (true) {
SkImage* imgR2 = surf->newImageShapshot();
SkASSERT(imgR == imgR2);
imgR2->unref();
}
drawContents(surf, SK_ColorGREEN);
SkImage* imgG = surf->newImageShapshot();
// since we've drawn after we snapped imgR, imgG will be a different obj
SkASSERT(imgR != imgG);
drawContents(surf, SK_ColorBLUE);
SkPaint paint;
// paint.setFilterBitmap(true);
// paint.setAlpha(0x80);
imgR->draw(canvas, 0, 0, &paint);
imgG->draw(canvas, 0, 80, &paint);
surf->draw(canvas, 0, 160, &paint);
imgG->unref();
imgR->unref();
}
class ImageGM : public skiagm::GM {
void* fBuffer;
size_t fBufferSize;
SkSize fSize;
enum {
W = 64,
H = 64,
RB = W * 4 + 8,
};
public:
ImageGM() {
fBufferSize = RB * H;
fBuffer = sk_malloc_throw(fBufferSize);
fSize.set(SkIntToScalar(W), SkIntToScalar(H));
}
virtual ~ImageGM() {
sk_free(fBuffer);
}
protected:
virtual SkString onShortName() {
return SkString("image-surface");
}
virtual SkISize onISize() {
return SkISize::Make(800, 500);
}
virtual void onDraw(SkCanvas* canvas) {
drawJpeg(canvas, this->getISize());
canvas->scale(2, 2);
static const char* kLabel1 = "Original Img";
static const char* kLabel2 = "Modified Img";
static const char* kLabel3 = "Cur Surface";
static const char* kLabel4 = "Pre-Alloc Img";
static const char* kLabel5 = "New Alloc Img";
static const char* kLabel6 = "SkPicture";
static const char* kLabel7 = "GPU";
SkPaint textPaint;
canvas->drawText(kLabel1, strlen(kLabel1), 10, 60, textPaint);
canvas->drawText(kLabel2, strlen(kLabel2), 10, 140, textPaint);
canvas->drawText(kLabel3, strlen(kLabel3), 10, 220, textPaint);
canvas->drawText(kLabel4, strlen(kLabel4), 80, 10, textPaint);
canvas->drawText(kLabel5, strlen(kLabel5), 160, 10, textPaint);
canvas->drawText(kLabel6, strlen(kLabel6), 250, 10, textPaint);
canvas->drawText(kLabel7, strlen(kLabel7), 340, 10, textPaint);
canvas->translate(80, 20);
// since we draw into this directly, we need to start fresh
sk_bzero(fBuffer, fBufferSize);
SkImage::Info info;
info.fWidth = W;
info.fHeight = H;
info.fColorType = SkImage::kPMColor_ColorType;
info.fAlphaType = SkImage::kPremul_AlphaType;
SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, fBuffer, RB));
SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info));
SkAutoTUnref<SkSurface> surf2(SkSurface::NewPicture(info.fWidth, info.fHeight));
#if SK_SUPPORT_GPU
GrContext* ctx = skiagm::GetGr();
SkAutoTUnref<SkSurface> surf3(SkSurface::NewRenderTarget(ctx, info, 0));
#endif
test_surface(canvas, surf0);
canvas->translate(80, 0);
test_surface(canvas, surf1);
canvas->translate(80, 0);
test_surface(canvas, surf2);
#if SK_SUPPORT_GPU
if (NULL != ctx) {
canvas->translate(80, 0);
test_surface(canvas, surf3);
}
#endif
}
virtual uint32_t onGetFlags() const SK_OVERRIDE {
return GM::kSkipPicture_Flag | GM::kSkipPipe_Flag;
}
private:
typedef skiagm::GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static skiagm::GM* MyFactory(void*) { return new ImageGM; }
static skiagm::GMRegistry reg(MyFactory);
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