0a2bf90dcc
This is part of an effort to ensure that all SkPaint effects can only be allocated on the heap. This patch makes the constructors of SkPathEffect, SkXfermode and their subclasses non-public and instead provides factory methods for creating these objects on the heap. We temporarily keep the constructors of the following classes public to not break Chrome/Blink: SkXfermode SkCornerPathEffect SkDashPathEffect BUG=skia:2187 R=scroggo@google.com, reed@google.com, mtklein@google.com, bungeman@google.com Author: dominikg@chromium.org Review URL: https://codereview.chromium.org/166583002 git-svn-id: http://skia.googlecode.com/svn/trunk@13519 2bbb7eff-a529-9590-31e7-b0007b416f81
106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
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/*
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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 "SampleCode.h"
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#include "SkView.h"
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#include "SkCanvas.h"
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#include "SkGradientShader.h"
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#include "SkAvoidXfermode.h"
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///////////////////////////////////////////////////////////////////////////////
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class AvoidView : public SampleView {
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SkShader* fShader;
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enum {
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W = 480,
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H = 320
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};
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public:
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AvoidView() {
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SkColor colors[] = { SK_ColorRED, SK_ColorYELLOW, SK_ColorGREEN, SK_ColorCYAN, SK_ColorBLUE };
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#if 0
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SkPoint pts[] = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) };
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fShader = SkGradientShader::CreateLinear(pts, colors, NULL,
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SK_ARRAY_COUNT(colors),
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SkShader::kMirror_TileMode);
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#else
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SkPoint pts[] = { { SkIntToScalar(W)/2, SkIntToScalar(H)/2 } };
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fShader = SkGradientShader::CreateRadial(pts[0], SkIntToScalar(H)/5,
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colors, NULL,
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SK_ARRAY_COUNT(colors),
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SkShader::kMirror_TileMode);
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#endif
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}
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virtual ~AvoidView() {
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fShader->unref();
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}
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protected:
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "AvoidXfermode");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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virtual void onDrawContent(SkCanvas* canvas) {
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SkPaint paint;
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SkRect r = { 0, 0, SkIntToScalar(W), SkIntToScalar(H) };
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canvas->translate(r.width() / 6, r.height() / 6);
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paint.setShader(fShader);
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canvas->drawRect(r, paint);
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static const struct {
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int fTolerance;
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SkAvoidXfermode::Mode fMode;
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float fDX, fDY;
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} gData[] = {
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{ 16, SkAvoidXfermode::kAvoidColor_Mode, 0, 0 },
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{ 255-16, SkAvoidXfermode::kAvoidColor_Mode, 1, 0 },
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{ 16, SkAvoidXfermode::kTargetColor_Mode, 0, 1 },
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{ 255-16, SkAvoidXfermode::kTargetColor_Mode, 1, 1 },
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};
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paint.setShader(NULL);
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paint.setColor(SK_ColorMAGENTA);
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SkPaint frameP;
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frameP.setStyle(SkPaint::kStroke_Style);
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for (size_t i = 0; i < SK_ARRAY_COUNT(gData); i++) {
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SkAutoTUnref<SkAvoidXfermode> mode(SkAvoidXfermode::Create(
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SK_ColorGREEN, gData[i].fTolerance, gData[i].fMode));
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paint.setXfermode(mode);
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int div = 3;
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SkRect rr = { 0, 0, r.width()/div, r.height()/div };
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rr.offset(r.width()/4 - rr.width()/2, r.height()/4 - rr.height()/2);
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rr.offset(r.width() * gData[i].fDX/2, r.height() * gData[i].fDY/2);
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canvas->drawRect(rr, paint);
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paint.setXfermode(NULL);
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canvas->drawRect(rr, frameP);
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}
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}
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private:
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() {
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return new AvoidView;
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}
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static SkViewRegister reg(MyFactory);
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