0e51577a14
BUG= Review URL: https://codereview.appspot.com/7065050 git-svn-id: http://skia.googlecode.com/svn/trunk@7061 2bbb7eff-a529-9590-31e7-b0007b416f81
129 lines
3.1 KiB
C++
129 lines
3.1 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 "SkAAClip.h"
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static void testop(const SkIRect& r0, const SkIRect& r1, SkRegion::Op op,
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const SkIRect& expectedR) {
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SkAAClip c0, c1, c2;
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c0.setRect(r0);
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c1.setRect(r1);
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c2.op(c0, c1, op);
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SkDEBUGCODE(SkIRect r2 = c2.getBounds());
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SkASSERT(r2 == expectedR);
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}
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static const struct {
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SkIRect r0;
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SkIRect r1;
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SkRegion::Op op;
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SkIRect expectedR;
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} gRec[] = {
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{{ 1, 2, 9, 3 }, { -3, 2, 5, 11 }, SkRegion::kDifference_Op, { 5, 2, 9, 3 }},
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{{ 1, 10, 5, 13 }, { 1, 2, 5, 11 }, SkRegion::kDifference_Op, { 1, 11, 5, 13 }},
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{{ 1, 10, 5, 13 }, { 1, 2, 5, 11 }, SkRegion::kReverseDifference_Op, { 1, 2, 5, 10 }},
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};
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static void testop() {
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for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) {
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testop(gRec[i].r0, gRec[i].r1, gRec[i].op, gRec[i].expectedR);
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}
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}
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static void drawClip(SkCanvas* canvas, const SkAAClip& clip) {
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SkMask mask;
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SkBitmap bm;
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clip.copyToMask(&mask);
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SkAutoMaskFreeImage amfi(mask.fImage);
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bm.setConfig(SkBitmap::kA8_Config, mask.fBounds.width(),
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mask.fBounds.height(), mask.fRowBytes);
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bm.setPixels(mask.fImage);
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SkPaint paint;
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canvas->drawBitmap(bm,
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SK_Scalar1 * mask.fBounds.fLeft,
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SK_Scalar1 * mask.fBounds.fTop,
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&paint);
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}
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class AAClipView : public SampleView {
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public:
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AAClipView() {
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testop();
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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, "AAClip");
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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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#if 1
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SkAAClip aaclip;
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SkPath path;
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SkRect bounds;
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bounds.set(0, 0, 20, 20);
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bounds.inset(SK_ScalarHalf, SK_ScalarHalf);
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// path.addRect(bounds);
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// path.addOval(bounds);
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path.addRoundRect(bounds, 4, 4);
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aaclip.setPath(path);
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canvas->translate(30, 30);
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drawClip(canvas, aaclip);
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SkAAClip aaclip2;
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path.offset(10, 10);
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aaclip2.setPath(path);
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canvas->translate(30, 0);
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drawClip(canvas, aaclip2);
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SkAAClip aaclip3;
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aaclip3.op(aaclip, aaclip2, SkRegion::kIntersect_Op);
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canvas->translate(30, 0);
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drawClip(canvas, aaclip3);
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#endif
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#if 0
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SkRect r;
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r.set(0, 0, this->width(), this->height());
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r.inset(20, 20);
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canvas->clipRect(r);
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SkPath path;
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path.addRect(r);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorRED);
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canvas->drawPath(path, paint);
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#endif
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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 AAClipView; }
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static SkViewRegister reg(MyFactory);
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