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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 "sk_tool_utils.h"
#include "SkBlurDrawLooper.h"
#include "SkBlurMask.h"
#include "SkColorFilter.h"
#include "SkMaskFilter.h"
#include "SkPath.h"
namespace skiagm {
///////////////////////////////////////////////////////////////////////////////
static void setup(SkPaint* paint, SkColor c, SkScalar strokeWidth) {
paint->setColor(c);
if (strokeWidth < 0) {
paint->setStyle(SkPaint::kFill_Style);
} else {
paint->setStyle(SkPaint::kStroke_Style);
paint->setStrokeWidth(strokeWidth);
}
}
class ShadowsGM : public GM {
public:
SkPath fCirclePath;
SkRect fRect;
SkBitmap fBitmap;
protected:
void onOnceBeforeDraw() override {
this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
fCirclePath.addCircle(SkIntToScalar(20), SkIntToScalar(20), SkIntToScalar(10) );
fRect.set(SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30));
fBitmap.allocPixels(SkImageInfo::Make(20, 20, SkColorType::kAlpha_8_SkColorType,
kPremul_SkAlphaType));
SkCanvas canvas(fBitmap);
canvas.clear(0x0);
SkPaint p;
canvas.drawRect(SkRect::MakeXYWH(10, 0, 10, 10), p);
canvas.drawRect(SkRect::MakeXYWH(0, 10, 10, 10), p);
}
SkString onShortName() override {
return SkString("shadows");
}
SkISize onISize() override {
return SkISize::Make(200, 200);
}
void onDraw(SkCanvas* canvas) override {
sk_sp<SkDrawLooper> shadowLoopers[] = {
SkBlurDrawLooper::Make(SK_ColorBLUE,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(10)),
SkIntToScalar(5), SkIntToScalar(10)),
SkBlurDrawLooper::Make(SK_ColorBLUE,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(10)),
SkIntToScalar(5), SkIntToScalar(10)),
SkBlurDrawLooper::Make(SK_ColorBLACK,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
SkIntToScalar(5),
SkIntToScalar(10)),
SkBlurDrawLooper::Make(0x7FFF0000,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
SkIntToScalar(-5), SkIntToScalar(-10)),
SkBlurDrawLooper::Make(SK_ColorBLACK, SkIntToScalar(0),
SkIntToScalar(5), SkIntToScalar(5)),
};
constexpr struct {
SkColor fColor;
SkScalar fStrokeWidth;
} gRec[] = {
{ SK_ColorRED, -SK_Scalar1 },
{ SK_ColorGREEN, SkIntToScalar(4) },
{ SK_ColorBLUE, SkIntToScalar(0)},
};
SkPaint paint;
paint.setAntiAlias(true);
for (size_t i = 0; i < SK_ARRAY_COUNT(shadowLoopers); ++i) {
SkAutoCanvasRestore acr(canvas, true);
paint.setLooper(shadowLoopers[i]);
canvas->translate(SkIntToScalar((unsigned int)i*40), SkIntToScalar(0));
setup(&paint, gRec[0].fColor, gRec[0].fStrokeWidth);
canvas->drawRect(fRect, paint);
canvas->translate(SkIntToScalar(0), SkIntToScalar(40));
setup(&paint, gRec[1].fColor, gRec[1].fStrokeWidth);
canvas->drawPath(fCirclePath, paint);
canvas->translate(SkIntToScalar(0), SkIntToScalar(40));
setup(&paint, gRec[2].fColor, gRec[2].fStrokeWidth);
canvas->drawPath(fCirclePath, paint);
// see bug.skia.org/562 (reference, draws correct)
canvas->translate(0, 40);
paint.setColor(SK_ColorBLACK);
canvas->drawBitmap(fBitmap, 10, 10, &paint);
canvas->translate(0, 40);
paint.setShader(SkShader::MakeBitmapShader(
fBitmap, SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode));
// see bug.skia.org/562 (shows bug as reported)
paint.setStyle(SkPaint::kFill_Style);
canvas->drawRect(SkRect::MakeXYWH(10, 10, 20, 20), paint);
paint.setShader(nullptr);
}
}
private:
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new ShadowsGM; }
static GMRegistry reg(MyFactory);
}
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