skia2/samplecode/SampleIdentityScale.cpp
Hal Canary 8a027312cd Samples: add name() virtual
Change-Id: I9b6e39bc7e35346bb73dfe014de1c8daa5a92f2a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/225428
Auto-Submit: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
2019-07-03 17:41:16 +00:00

75 lines
2.1 KiB
C++

/*
* 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 "include/core/SkCanvas.h"
#include "include/core/SkColorPriv.h"
#include "include/core/SkFont.h"
#include "include/core/SkPath.h"
#include "include/core/SkStream.h"
#include "include/core/SkTime.h"
#include "include/effects/SkBlurMaskFilter.h"
#include "include/utils/SkRandom.h"
#include "samplecode/DecodeFile.h"
#include "samplecode/Sample.h"
#include "src/core/SkClipOpPriv.h"
#include "tools/Resources.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 Sample {
public:
IdentityScaleView(const char imageFilename[]) {
if (!DecodeDataToBitmap(GetResourceAsData(imageFilename), &fBM)) {
fBM.allocN32Pixels(1, 1);
*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
}
}
protected:
SkBitmap fBM;
SkString name() override { return SkString("IdentityScale"); }
void onDrawContent(SkCanvas* canvas) override {
SkFont font(nullptr, 48);
SkPaint paint;
paint.setAntiAlias(true);
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, kIntersect_SkClipOp, true);
text = "Scaled = 0";
}
canvas->drawBitmap( fBM, 100, 100, &paint );
canvas->restore();
canvas->drawString(text, 100, 400, font, paint);
}
private:
typedef Sample INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_SAMPLE( return new IdentityScaleView("images/mandrill_256.png"); )