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
109 lines
3.3 KiB
C++
109 lines
3.3 KiB
C++
/*
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* Copyright 2013 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 "SkCanvas.h"
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#include "SkCornerPathEffect.h"
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#include "SkDashPathEffect.h"
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#include "SkPathUtils.h"
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#include "SkRandom.h"
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#include "SkView.h"
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typedef void (*BitsToPath)(SkPath*, const char*, int, int, int);
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static const BitsToPath gBitsToPath_fns[] = {
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SkPathUtils::BitsToPath_Path,
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SkPathUtils::BitsToPath_Region,
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};
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// hardcoded bitmap patterns
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static const uint8_t gBits[][16] = {
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{ 0x18, 0x00, 0x3c, 0x00, 0x7e, 0x00, 0xdb, 0x00,
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0xff, 0x00, 0x24, 0x00, 0x5a, 0x00, 0xa5, 0x00 },
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{ 0x20, 0x80, 0x91, 0x20, 0xbf, 0xa0, 0xee, 0xe0,
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0xff, 0xe0, 0x7f, 0xc0, 0x20, 0x80, 0x40, 0x40 },
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{ 0x0f, 0x00, 0x7f, 0xe0, 0xff, 0xf0, 0xe6, 0x70,
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0xff, 0xf0, 0x19, 0x80, 0x36, 0xc0, 0xc0, 0x30 }
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};
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class SamplePathUtils : public SampleView {
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public:
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static const int fNumBits = 3;
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static const int fH = 8, fW = 12;
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static const size_t fRowBytes = 2;
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static const int fNumChars = fH * fRowBytes;
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SkPaint fBmpPaint;
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SkScalar fPhase;
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SamplePathUtils() {
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fBmpPaint.setAntiAlias(true); // Black paint for bitmap
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fBmpPaint.setStyle(SkPaint::kFill_Style);
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fPhase = 0.0f; // to animate the dashed path
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "PathUtils");
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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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/////////////////////////////////////////////////////////////
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virtual void onDrawContent(SkCanvas* canvas) {
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SkScalar intervals[8] = { .5f, .3f, .5f, .3f, .5f, .3f, .5f, .3f };
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SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, fPhase));
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SkAutoTUnref<SkCornerPathEffect> corner(SkCornerPathEffect::Create(.25f));
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SkAutoTUnref<SkComposePathEffect> compose(SkComposePathEffect::Create(dash, corner));
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SkPaint outlinePaint;
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outlinePaint.setAntiAlias(true); // dashed paint for bitmap
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outlinePaint.setStyle(SkPaint::kStroke_Style);
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outlinePaint.setPathEffect(compose);
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canvas->scale(10.0f, 10.0f); // scales up
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for (int i = 0; i < fNumBits; ++i) {
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canvas->save();
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for (size_t j = 0; j < SK_ARRAY_COUNT(gBitsToPath_fns); ++j) {
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SkPath path;
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gBitsToPath_fns[j](&path, (char*) &gBits[i], fW, fH, fRowBytes);
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//draw skPath and outline
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canvas->drawPath(path, fBmpPaint);
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canvas->translate(1.5f * fW, 0); // translates past previous bitmap
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canvas->drawPath(path, outlinePaint);
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canvas->translate(1.5f * fW, 0); // translates past previous bitmap
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}
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canvas->restore();
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canvas->translate(0, 1.5f * fH); //translate to next row
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}
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// for animated pathEffect
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fPhase += .01f;
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this->inval(NULL);
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}
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private:
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typedef SkView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new SamplePathUtils; }
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static SkViewRegister reg(MyFactory)
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;
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