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131 lines
4.5 KiB
131 lines
4.5 KiB
/*
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* Copyright 2011 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 "SkBlurDrawLooper.h"
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#include "SkBlurMask.h"
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#include "SkColorFilter.h"
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#include "SkMaskFilter.h"
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#include "SkPath.h"
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namespace skiagm {
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///////////////////////////////////////////////////////////////////////////////
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static void setup(SkPaint* paint, SkColor c, SkScalar strokeWidth) {
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paint->setColor(c);
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if (strokeWidth < 0) {
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paint->setStyle(SkPaint::kFill_Style);
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} else {
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paint->setStyle(SkPaint::kStroke_Style);
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paint->setStrokeWidth(strokeWidth);
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}
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}
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class ShadowsGM : public GM {
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public:
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SkPath fCirclePath;
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SkRect fRect;
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SkBitmap fBitmap;
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protected:
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void onOnceBeforeDraw() override {
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this->setBGColor(0xFFDDDDDD);
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fCirclePath.addCircle(SkIntToScalar(20), SkIntToScalar(20), SkIntToScalar(10) );
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fRect.set(SkIntToScalar(10), SkIntToScalar(10),
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SkIntToScalar(30), SkIntToScalar(30));
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fBitmap.allocPixels(SkImageInfo::Make(20, 20, SkColorType::kAlpha_8_SkColorType,
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kPremul_SkAlphaType));
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SkCanvas canvas(fBitmap);
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canvas.clear(0x0);
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SkPaint p;
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canvas.drawRect(SkRect::MakeXYWH(10, 0, 10, 10), p);
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canvas.drawRect(SkRect::MakeXYWH(0, 10, 10, 10), p);
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}
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SkString onShortName() override {
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return SkString("shadows");
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}
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SkISize onISize() override {
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return SkISize::Make(200, 200);
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}
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void onDraw(SkCanvas* canvas) override {
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sk_sp<SkDrawLooper> shadowLoopers[] = {
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SkBlurDrawLooper::Make(SK_ColorBLUE,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(10)),
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SkIntToScalar(5), SkIntToScalar(10)),
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SkBlurDrawLooper::Make(SK_ColorBLUE,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(10)),
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SkIntToScalar(5), SkIntToScalar(10)),
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SkBlurDrawLooper::Make(SK_ColorBLACK,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
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SkIntToScalar(5),
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SkIntToScalar(10)),
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SkBlurDrawLooper::Make(0x7FFF0000,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
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SkIntToScalar(-5), SkIntToScalar(-10)),
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SkBlurDrawLooper::Make(SK_ColorBLACK, SkIntToScalar(0),
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SkIntToScalar(5), SkIntToScalar(5)),
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};
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constexpr struct {
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SkColor fColor;
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SkScalar fStrokeWidth;
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} gRec[] = {
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{ SK_ColorRED, -SK_Scalar1 },
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{ SK_ColorGREEN, SkIntToScalar(4) },
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{ SK_ColorBLUE, SkIntToScalar(0)},
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};
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SkPaint paint;
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paint.setAntiAlias(true);
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for (size_t i = 0; i < SK_ARRAY_COUNT(shadowLoopers); ++i) {
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SkAutoCanvasRestore acr(canvas, true);
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paint.setLooper(shadowLoopers[i]);
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canvas->translate(SkIntToScalar((unsigned int)i*40), SkIntToScalar(0));
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setup(&paint, gRec[0].fColor, gRec[0].fStrokeWidth);
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canvas->drawRect(fRect, paint);
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canvas->translate(SkIntToScalar(0), SkIntToScalar(40));
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setup(&paint, gRec[1].fColor, gRec[1].fStrokeWidth);
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canvas->drawPath(fCirclePath, paint);
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canvas->translate(SkIntToScalar(0), SkIntToScalar(40));
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setup(&paint, gRec[2].fColor, gRec[2].fStrokeWidth);
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canvas->drawPath(fCirclePath, paint);
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// see bug.skia.org/562 (reference, draws correct)
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canvas->translate(0, 40);
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paint.setColor(SK_ColorBLACK);
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canvas->drawBitmap(fBitmap, 10, 10, &paint);
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canvas->translate(0, 40);
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paint.setShader(SkShader::MakeBitmapShader(
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fBitmap, SkShader::kRepeat_TileMode,
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SkShader::kRepeat_TileMode));
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// see bug.skia.org/562 (shows bug as reported)
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paint.setStyle(SkPaint::kFill_Style);
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canvas->drawRect(SkRect::MakeXYWH(10, 10, 20, 20), paint);
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paint.setShader(nullptr);
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}
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}
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private:
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typedef GM INHERITED;
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};
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///////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new ShadowsGM; )
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}
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