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/*
* Copyright 2011 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 "SkBlurMask.h"
#include "SkBlurMaskFilter.h"
#include "SkPath.h"
class BlursGM : public skiagm::GM {
public:
BlursGM() {
this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
}
protected:
SkString onShortName() override {
return SkString("blurs");
}
SkISize onISize() override {
return SkISize::Make(700, 500);
}
void onDraw(SkCanvas* canvas) override {
SkBlurStyle NONE = SkBlurStyle(-999);
static const struct {
SkBlurStyle fStyle;
int fCx, fCy;
} gRecs[] = {
{ NONE, 0, 0 },
{ kInner_SkBlurStyle, -1, 0 },
{ kNormal_SkBlurStyle, 0, 1 },
{ kSolid_SkBlurStyle, 0, -1 },
{ kOuter_SkBlurStyle, 1, 0 },
};
SkPaint paint;
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(SkIntToScalar(25));
canvas->translate(SkIntToScalar(-40), SkIntToScalar(0));
SkBlurMaskFilter::BlurFlags flags = SkBlurMaskFilter::kNone_BlurFlag;
for (int j = 0; j < 2; j++) {
canvas->save();
paint.setColor(SK_ColorBLUE);
for (size_t i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
if (gRecs[i].fStyle != NONE) {
SkMaskFilter* mf = SkBlurMaskFilter::Create(gRecs[i].fStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(20)),
flags);
paint.setMaskFilter(mf)->unref();
} else {
paint.setMaskFilter(NULL);
}
canvas->drawCircle(SkIntToScalar(200 + gRecs[i].fCx*100),
SkIntToScalar(200 + gRecs[i].fCy*100),
SkIntToScalar(50),
paint);
}
// draw text
{
SkMaskFilter* mf = SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(4)),
flags);
paint.setMaskFilter(mf)->unref();
SkScalar x = SkIntToScalar(70);
SkScalar y = SkIntToScalar(400);
paint.setColor(SK_ColorBLACK);
canvas->drawText("Hamburgefons Style", 18, x, y, paint);
canvas->drawText("Hamburgefons Style", 18,
x, y + SkIntToScalar(50), paint);
paint.setMaskFilter(NULL);
paint.setColor(SK_ColorWHITE);
x -= SkIntToScalar(2);
y -= SkIntToScalar(2);
canvas->drawText("Hamburgefons Style", 18, x, y, paint);
}
canvas->restore();
flags = SkBlurMaskFilter::kHighQuality_BlurFlag;
canvas->translate(SkIntToScalar(350), SkIntToScalar(0));
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new BlursGM; )
//////////////////////////////////////////////////////////////////////////////////////////////
// exercise a special-case of blurs, which is two nested rects. These are drawn specially,
// and possibly cached.
//
// in particular, we want to notice that the 2nd rect draws slightly differently, since it
// is translated a fractional amount.
//
class Blur2RectsGM : public skiagm::GM {
public:
SkString onShortName() override {
return SkString("blur2rects");
}
SkISize onISize() override {
return SkISize::Make(700, 500);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
2.3f))->unref();
SkRect outer = SkRect::MakeXYWH(10.125f, 10.125f, 100.125f, 100);
SkRect inner = SkRect::MakeXYWH(20.25f, 20.125f, 80, 80);
SkPath path;
path.addRect(outer, SkPath::kCW_Direction);
path.addRect(inner, SkPath::kCCW_Direction);
canvas->drawPath(path, paint);
// important to translate by a factional amount to exercise a different "phase"
// of the same path w.r.t. the pixel grid
SkScalar dx = SkScalarRoundToScalar(path.getBounds().width()) + 14 + 0.25f;
canvas->translate(dx, 0);
canvas->drawPath(path, paint);
}
};
DEF_GM( return new Blur2RectsGM; )
class Blur2RectsNonNinePatchGM : public skiagm::GM {
public:
SkString onShortName() override {
return SkString("blur2rectsnonninepatch");
}
SkISize onISize() override {
return SkISize::Make(700, 500);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
4.3f))->unref();
SkRect outer = SkRect::MakeXYWH(10, 110, 100, 100);
SkRect inner = SkRect::MakeXYWH(50, 150, 10, 10);
SkPath path;
path.addRect(outer, SkPath::kCW_Direction);
path.addRect(inner, SkPath::kCW_Direction);
canvas->drawPath(path, paint);
SkScalar dx = SkScalarRoundToScalar(path.getBounds().width()) + 40 + 0.25f;
canvas->translate(dx, 0);
canvas->drawPath(path, paint);
// Translate to outside of clip bounds.
canvas->translate(-dx, 0);
canvas->translate(-30, -150);
canvas->drawPath(path, paint);
}
};
DEF_GM( return new Blur2RectsNonNinePatchGM; )
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