89 lines
2.0 KiB
C++
89 lines
2.0 KiB
C++
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/*
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* Copyright 2014 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 "Resources.h"
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#include "SkBitmap.h"
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#include "SkImageDecoder.h"
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#include "SkPaint.h"
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#include "SkShader.h"
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#include "SkStream.h"
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/***
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*
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* This GM reproduces Skia bug 2904, in which a tiled bitmap shader was failing to draw correctly
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* when fractional image scaling was ignored by the high quality bitmap scaler.
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*
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***/
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namespace skiagm {
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class TiledScaledBitmapGM : public GM {
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public:
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TiledScaledBitmapGM() {
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}
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protected:
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virtual SkString onShortName() {
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return SkString("tiledscaledbitmap");
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}
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virtual SkISize onISize() {
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return SkISize::Make(1016, 616);
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}
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virtual uint32_t onGetFlags() const SK_OVERRIDE {
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return kSkipTiled_Flag;
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}
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static SkBitmap make_bm(int width, int height) {
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SkBitmap bm;
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bm.allocN32Pixels(width, height);
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bm.eraseColor(SK_ColorTRANSPARENT);
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SkCanvas canvas(bm);
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SkPaint paint;
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paint.setAntiAlias(true);
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canvas.drawCircle(width/2.f, height/2.f, width/4.f, paint);
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return bm;
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}
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virtual void onOnceBeforeDraw() SK_OVERRIDE {
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fBitmap = make_bm(360, 288);
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}
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virtual void onDraw(SkCanvas* canvas) {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setFilterLevel(SkPaint::kHigh_FilterLevel);
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SkMatrix mat;
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mat.setScale(121.f/360.f, 93.f/288.f);
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mat.postTranslate(-72, -72);
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SkShader *shader = SkShader::CreateBitmapShader(fBitmap, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &mat);
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paint.setShader(shader);
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SkSafeUnref(shader);
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canvas->drawRectCoords(8,8,1008, 608, paint);
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}
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private:
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SkBitmap fBitmap;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return SkNEW(TiledScaledBitmapGM);)
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}
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