/*
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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 "sk_tool_utils.h"
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#include "SkBlurMask.h"
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#include "SkCanvas.h"
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#include "SkGraphics.h"
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#include "SkLayerDrawLooper.h"
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#include "SkMaskFilter.h"
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#include "SkRandom.h"
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#define WIDTH 200
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#define HEIGHT 200
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class DrawLooperGM : public skiagm::GM {
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public:
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DrawLooperGM() : fLooper(nullptr) {
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this->setBGColor(0xFFDDDDDD);
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}
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protected:
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virtual SkISize onISize() override {
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return SkISize::Make(520, 160);
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}
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SkString onShortName() override {
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return SkString("drawlooper");
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}
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void onDraw(SkCanvas* canvas) override {
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this->init();
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setLooper(fLooper);
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SkFont font(sk_tool_utils::create_portable_typeface(), 72);
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canvas->drawCircle(50, 50, 30, paint);
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canvas->drawRect({ 150, 50, 200, 100 }, paint);
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canvas->drawString("Looper", 230, 100, font, paint);
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}
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private:
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sk_sp<SkDrawLooper> fLooper;
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void init() {
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if (fLooper) return;
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constexpr struct {
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SkColor fColor;
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SkPaint::Style fStyle;
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SkScalar fWidth;
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SkScalar fOffset;
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SkScalar fBlur;
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} gParams[] = {
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{ SK_ColorWHITE, SkPaint::kStroke_Style, SkIntToScalar(1)*3/4, 0, 0 },
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{ SK_ColorRED, SkPaint::kStroke_Style, SkIntToScalar(4), 0, 0 },
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{ SK_ColorBLUE, SkPaint::kFill_Style, 0, 0, 0 },
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{ 0x88000000, SkPaint::kFill_Style, 0, SkIntToScalar(10), SkIntToScalar(3) }
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};
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SkLayerDrawLooper::Builder looperBuilder;
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SkLayerDrawLooper::LayerInfo info;
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info.fPaintBits = SkLayerDrawLooper::kStyle_Bit | SkLayerDrawLooper::kMaskFilter_Bit;
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info.fColorMode = SkBlendMode::kSrc;
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for (size_t i = 0; i < SK_ARRAY_COUNT(gParams); i++) {
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info.fOffset.set(gParams[i].fOffset, gParams[i].fOffset);
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SkPaint* paint = looperBuilder.addLayer(info);
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paint->setColor(gParams[i].fColor);
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paint->setStyle(gParams[i].fStyle);
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paint->setStrokeWidth(gParams[i].fWidth);
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if (gParams[i].fBlur > 0) {
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paint->setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle,
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SkBlurMask::ConvertRadiusToSigma(gParams[i].fBlur)));
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}
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}
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fLooper = looperBuilder.detach();
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}
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new DrawLooperGM; )
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