2a475eae62
Many tests and examples use drawText with a guess of how long the text is in bytes, or a call to strlen(). Add a helper to SkCanvas to simplify these examples. Add another helper for SkString. R=reed@google.com Change-Id: I0204a31e938f065606f08ee7cd9a6b36db791ee2 Reviewed-on: https://skia-review.googlesource.com/13642 Commit-Queue: Cary Clark <caryclark@google.com> Reviewed-by: Cary Clark <caryclark@google.com> Reviewed-by: Mike Reed <reed@google.com> Reviewed-by: Cary Clark <caryclark@skia.org>
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/*
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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 "SkBlurMaskFilter.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 "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(sk_tool_utils::color_to_565(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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sk_tool_utils::set_portable_typeface(&paint);
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paint.setTextSize(SkIntToScalar(72));
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paint.setLooper(fLooper);
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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, 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(SkBlurMaskFilter::Make(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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