eb9a46cbbb
This is an intermediate api, but might help us quickly get to a point where no one is creating bitmaps in a 2-step process (setConfig + alloc). BUG=skia: R=halcanary@google.com Review URL: https://codereview.chromium.org/140593005 git-svn-id: http://skia.googlecode.com/svn/trunk@13182 2bbb7eff-a529-9590-31e7-b0007b416f81
112 lines
3.0 KiB
C++
112 lines
3.0 KiB
C++
/*
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* Copyright 2013 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 "SkImageDecoder.h"
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#include "SkStream.h"
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class ScaleBitmapGM : public skiagm::GM {
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public:
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ScaleBitmapGM(const char filename[], float scale)
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: fFilename(filename), fScale(scale)
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{
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this->setBGColor(0xFFDDDDDD);
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fName.printf("scalebitmap_%s_%f", filename, scale);
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SkString path(skiagm::GM::gResourcePath);
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path.append("/");
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path.append(fFilename);
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SkImageDecoder *codec = NULL;
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SkFILEStream stream(path.c_str());
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if (stream.isValid()) {
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codec = SkImageDecoder::Factory(&stream);
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}
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if (codec) {
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stream.rewind();
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codec->decode(&stream, &fBM, SkBitmap::kARGB_8888_Config,
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SkImageDecoder::kDecodePixels_Mode);
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SkDELETE(codec);
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} else {
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fBM.allocN32Pixels(1, 1);
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*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
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}
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fSize = fBM.height();
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}
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protected:
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SkBitmap fBM;
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SkString fName;
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SkString fFilename;
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int fSize;
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float fScale;
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virtual SkString onShortName() SK_OVERRIDE {
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return fName;
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}
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virtual SkISize onISize() SK_OVERRIDE {
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return SkISize::Make(fBM.width() * fScale, fBM.height() * fScale);
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}
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virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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SkBitmap dst;
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dst.allocN32Pixels(fBM.width() * fScale, fBM.height() * fScale);
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fBM.scale(&dst);
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canvas->drawBitmap(dst, 0, 0);
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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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class ScaleBitmapMipmapGM: public ScaleBitmapGM {
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SkMatrix fMatrix;
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public:
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ScaleBitmapMipmapGM(const char filename[], float scale)
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: INHERITED(filename, scale)
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{
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fName.printf("scalebitmap_mipmap_%s_%f", filename, scale);
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fBM.buildMipMap();
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fMatrix.setScale(scale, scale);
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}
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protected:
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virtual void onDraw(SkCanvas *canvas) SK_OVERRIDE {
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SkPaint paint;
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paint.setFilterBitmap(true);
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canvas->drawBitmapMatrix(fBM, fMatrix, &paint);
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}
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private:
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typedef ScaleBitmapGM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new ScaleBitmapGM("mandrill_128.png", 2); )
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DEF_GM( return new ScaleBitmapGM("mandrill_64.png", 4); )
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DEF_GM( return new ScaleBitmapGM("mandrill_32.png", 8); )
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DEF_GM( return new ScaleBitmapGM("mandrill_16.png", 16); )
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DEF_GM( return new ScaleBitmapGM("nature.jpg", 0.5f); )
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DEF_GM( return new ScaleBitmapGM("nature.jpg", 0.25f); )
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DEF_GM( return new ScaleBitmapGM("nature.jpg", 0.125f); )
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DEF_GM( return new ScaleBitmapGM("nature.jpg", 0.0625f); )
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DEF_GM( return new ScaleBitmapMipmapGM("nature.jpg", 0.5f); )
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DEF_GM( return new ScaleBitmapMipmapGM("nature.jpg", 0.25f); )
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DEF_GM( return new ScaleBitmapMipmapGM("nature.jpg", 0.125f); )
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DEF_GM( return new ScaleBitmapMipmapGM("nature.jpg", 0.0625f); )
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