| /* |
| * 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" |
| |
| extern GrContext* GetGr(); |
| |
| 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(surface->width(), 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"); |
| } |
| |
| virtual SkISize onISize() { |
| return SkISize::Make(640, 480); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| drawJpeg(canvas, this->getISize()); |
| |
| canvas->translate(10, 10); |
| canvas->scale(2, 2); |
| |
| // 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, NULL, fBuffer, RB)); |
| SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info, NULL)); |
| SkAutoTUnref<SkSurface> surf2(SkSurface::NewPicture(info.fWidth, info.fHeight)); |
| |
| test_surface(canvas, surf0); |
| canvas->translate(80, 0); |
| test_surface(canvas, surf1); |
| canvas->translate(80, 0); |
| test_surface(canvas, surf2); |
| } |
| |
| 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); |
| |