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/*
* Copyright 2014 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 "Resources.h"
#include "SampleCode.h"
#include "SkBlurMaskFilter.h"
#include "SkCanvas.h"
#include "SkColorPriv.h"
#include "SkImageDecoder.h"
#include "SkRandom.h"
#include "SkStream.h"
#include "SkTime.h"
// Intended to exercise pixel snapping observed with scaled images (and
// with non-scaled images, but for a different reason): Bug 1145
class IdentityScaleView : public SampleView {
public:
IdentityScaleView(const char imageFilename[]) {
SkString resourcePath = GetResourcePath(imageFilename);
SkImageDecoder* codec = NULL;
SkFILEStream stream(resourcePath.c_str());
if (stream.isValid()) {
codec = SkImageDecoder::Factory(&stream);
}
if (codec) {
stream.rewind();
codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
SkDELETE(codec);
} else {
fBM.allocN32Pixels(1, 1);
*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
}
}
protected:
SkBitmap fBM;
// overrides from SkEventSink
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "IdentityScale");
return true;
}
return this->INHERITED::onQuery(evt);
}
void onDrawContent(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(48);
paint.setFilterQuality(kHigh_SkFilterQuality);
SkTime::DateTime time;
SkTime::GetDateTime(&time);
bool use_scale = (time.fSecond % 2 == 1);
const char *text;
canvas->save();
if (use_scale) {
text = "Scaled = 1";
} else {
SkRect r = { 100, 100, 356, 356 };
SkPath clipPath;
clipPath.addRoundRect(r, SkIntToScalar(5), SkIntToScalar(5));
canvas->clipPath(clipPath, SkRegion::kIntersect_Op, SkToBool(1));
text = "Scaled = 0";
}
canvas->drawBitmap( fBM, 100, 100, &paint );
canvas->restore();
canvas->drawText( text, strlen(text), 100, 400, paint );
this->inval(NULL);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new IdentityScaleView("mandrill_256.png"); }
static SkViewRegister reg(MyFactory);
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