93 lines
2.5 KiB
C++
93 lines
2.5 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 "SampleCode.h"
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#include "SkBlurMaskFilter.h"
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#include "SkCanvas.h"
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#include "SkColorPriv.h"
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#include "SkImageDecoder.h"
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#include "SkRandom.h"
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#include "SkStream.h"
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#include "SkTime.h"
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// Intended to exercise pixel snapping observed with scaled images (and
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// with non-scaled images, but for a different reason): Bug 1145
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class IdentityScaleView : public SampleView {
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public:
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IdentityScaleView(const char imageFilename[]) {
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SkString resourcePath = GetResourcePath(imageFilename);
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SkImageDecoder* codec = NULL;
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SkFILEStream stream(resourcePath.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, kN32_SkColorType, 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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}
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protected:
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SkBitmap fBM;
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) SK_OVERRIDE {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "IdentityScale");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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virtual void onDrawContent(SkCanvas* canvas) SK_OVERRIDE {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setTextSize(48);
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paint.setFilterLevel(SkPaint::kHigh_FilterLevel);
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SkTime::DateTime time;
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SkTime::GetDateTime(&time);
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bool use_scale = (time.fSecond % 2 == 1);
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const char *text;
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canvas->save();
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if (use_scale) {
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text = "Scaled = 1";
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} else {
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SkRect r = { 100, 100, 356, 356 };
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SkPath clipPath;
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clipPath.addRoundRect(r, SkIntToScalar(5), SkIntToScalar(5));
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canvas->clipPath(clipPath, SkRegion::kIntersect_Op, SkToBool(1));
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text = "Scaled = 0";
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}
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canvas->drawBitmap( fBM, 100, 100, &paint );
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canvas->restore();
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canvas->drawText( text, strlen(text), 100, 400, paint );
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this->inval(NULL);
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}
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private:
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new IdentityScaleView("mandrill_256.png"); }
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static SkViewRegister reg(MyFactory);
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