d829b5cbff
git-svn-id: http://skia.googlecode.com/svn/trunk@4845 2bbb7eff-a529-9590-31e7-b0007b416f81
142 lines
3.8 KiB
C++
142 lines
3.8 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkSurface.h"
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#include "SkCanvas.h"
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#include "SkStream.h"
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#include "SkData.h"
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static SkData* fileToData(const char path[]) {
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SkFILEStream stream(path);
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if (!stream.isValid()) {
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return SkData::NewEmpty();
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}
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size_t size = stream.getLength();
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void* mem = sk_malloc_throw(size);
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stream.read(mem, size);
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return SkData::NewFromMalloc(mem, size);
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}
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static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
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SkAutoDataUnref data(fileToData("/Users/mike/Downloads/skia.google.jpeg"));
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SkImage* image = SkImage::NewEncodedData(data);
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if (image) {
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SkAutoCanvasRestore acr(canvas, true);
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canvas->scale(size.width() * 1.0f / image->width(),
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size.height() * 1.0f / image->height());
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image->draw(canvas,0, 0, NULL);
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image->unref();
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}
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}
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static void drawContents(SkSurface* surface, SkColor fillC) {
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SkSize size = SkSize::Make(surface->width(), surface->height());
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SkCanvas* canvas = surface->getCanvas();
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SkScalar stroke = size.fWidth / 10;
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SkScalar radius = (size.fWidth - stroke) / 2;
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(fillC);
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canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(stroke);
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paint.setColor(SK_ColorBLACK);
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canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
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}
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static void test_surface(SkCanvas* canvas, SkSurface* surf) {
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drawContents(surf, SK_ColorRED);
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SkImage* imgR = surf->newImageShapshot();
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drawContents(surf, SK_ColorGREEN);
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SkImage* imgG = surf->newImageShapshot();
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drawContents(surf, SK_ColorBLUE);
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SkPaint paint;
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// paint.setFilterBitmap(true);
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// paint.setAlpha(0x80);
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imgR->draw(canvas, 0, 0, &paint);
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imgG->draw(canvas, 0, 80, &paint);
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surf->draw(canvas, 0, 160, &paint);
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imgG->unref();
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imgR->unref();
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}
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class ImageGM : public skiagm::GM {
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void* fBuffer;
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size_t fBufferSize;
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SkSize fSize;
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enum {
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W = 64,
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H = 64,
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RB = W * 4 + 8,
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};
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public:
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ImageGM() {
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fBufferSize = RB * H;
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fBuffer = sk_malloc_throw(fBufferSize);
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fSize.set(SkIntToScalar(W), SkIntToScalar(H));
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}
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virtual ~ImageGM() {
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sk_free(fBuffer);
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}
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protected:
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virtual SkString onShortName() {
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return SkString("image");
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}
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virtual SkISize onISize() {
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return SkISize::Make(640, 480);
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}
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virtual void onDraw(SkCanvas* canvas) {
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drawJpeg(canvas, this->getISize());
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canvas->translate(10, 10);
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canvas->scale(2, 2);
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// since we draw into this directly, we need to start fresh
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sk_bzero(fBuffer, fBufferSize);
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SkImage::Info info;
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info.fWidth = W;
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info.fHeight = H;
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info.fColorType = SkImage::kPMColor_ColorType;
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info.fAlphaType = SkImage::kPremul_AlphaType;
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SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, NULL, fBuffer, RB));
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SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info, NULL));
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SkAutoTUnref<SkSurface> surf2(SkSurface::NewPicture(info.fWidth, info.fHeight));
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test_surface(canvas, surf0);
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canvas->translate(80, 0);
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test_surface(canvas, surf1);
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canvas->translate(80, 0);
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test_surface(canvas, surf2);
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}
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private:
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typedef skiagm::GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static skiagm::GM* MyFactory(void*) { return new ImageGM; }
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static skiagm::GMRegistry reg(MyFactory);
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