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reed@google.com32287892011-10-05 16:27:44 +00001
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9#include "SampleCode.h"
10#include "SkView.h"
11#include "SkCanvas.h"
12#include "SkAAClip.h"
13
reed@google.comc9041912011-10-27 16:58:46 +000014static void testop(const SkIRect& r0, const SkIRect& r1, SkRegion::Op op,
15 const SkIRect& expectedR) {
16 SkAAClip c0, c1, c2;
17 c0.setRect(r0);
18 c1.setRect(r1);
19 c2.op(c0, c1, op);
rmistry@google.comae933ce2012-08-23 18:19:56 +000020
humper@google.com0e515772013-01-07 19:54:40 +000021 SkDEBUGCODE(SkIRect r2 = c2.getBounds());
reed@google.comc9041912011-10-27 16:58:46 +000022 SkASSERT(r2 == expectedR);
23}
24
25static const struct {
26 SkIRect r0;
27 SkIRect r1;
28 SkRegion::Op op;
29 SkIRect expectedR;
30} gRec[] = {
31 {{ 1, 2, 9, 3 }, { -3, 2, 5, 11 }, SkRegion::kDifference_Op, { 5, 2, 9, 3 }},
32 {{ 1, 10, 5, 13 }, { 1, 2, 5, 11 }, SkRegion::kDifference_Op, { 1, 11, 5, 13 }},
33 {{ 1, 10, 5, 13 }, { 1, 2, 5, 11 }, SkRegion::kReverseDifference_Op, { 1, 2, 5, 10 }},
34};
35
36static void testop() {
37 for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) {
38 testop(gRec[i].r0, gRec[i].r1, gRec[i].op, gRec[i].expectedR);
39 }
40}
41
reed@google.com32287892011-10-05 16:27:44 +000042static void drawClip(SkCanvas* canvas, const SkAAClip& clip) {
43 SkMask mask;
44 SkBitmap bm;
rmistry@google.comae933ce2012-08-23 18:19:56 +000045
reed@google.com32287892011-10-05 16:27:44 +000046 clip.copyToMask(&mask);
reed@google.com045e62d2011-10-24 12:19:46 +000047 SkAutoMaskFreeImage amfi(mask.fImage);
48
reed@google.com32287892011-10-05 16:27:44 +000049 bm.setConfig(SkBitmap::kA8_Config, mask.fBounds.width(),
50 mask.fBounds.height(), mask.fRowBytes);
51 bm.setPixels(mask.fImage);
52
53 SkPaint paint;
bsalomon@google.com820e80a2011-10-24 21:09:40 +000054 canvas->drawBitmap(bm,
55 SK_Scalar1 * mask.fBounds.fLeft,
56 SK_Scalar1 * mask.fBounds.fTop,
57 &paint);
reed@google.com32287892011-10-05 16:27:44 +000058}
59
60class AAClipView : public SampleView {
61public:
62 AAClipView() {
reed@google.comc9041912011-10-27 16:58:46 +000063 testop();
reed@google.com32287892011-10-05 16:27:44 +000064 }
65
66protected:
67 // overrides from SkEventSink
68 virtual bool onQuery(SkEvent* evt) {
69 if (SampleCode::TitleQ(*evt)) {
70 SampleCode::TitleR(evt, "AAClip");
71 return true;
72 }
73 return this->INHERITED::onQuery(evt);
74 }
75
76 virtual void onDrawContent(SkCanvas* canvas) {
77#if 1
78 SkAAClip aaclip;
79 SkPath path;
80 SkRect bounds;
rmistry@google.comae933ce2012-08-23 18:19:56 +000081
reed@google.com32287892011-10-05 16:27:44 +000082 bounds.set(0, 0, 20, 20);
83 bounds.inset(SK_ScalarHalf, SK_ScalarHalf);
84
85// path.addRect(bounds);
86// path.addOval(bounds);
87 path.addRoundRect(bounds, 4, 4);
88 aaclip.setPath(path);
89 canvas->translate(30, 30);
90 drawClip(canvas, aaclip);
91
92 SkAAClip aaclip2;
93 path.offset(10, 10);
94 aaclip2.setPath(path);
95 canvas->translate(30, 0);
96 drawClip(canvas, aaclip2);
97
98 SkAAClip aaclip3;
99 aaclip3.op(aaclip, aaclip2, SkRegion::kIntersect_Op);
100 canvas->translate(30, 0);
101 drawClip(canvas, aaclip3);
rmistry@google.comae933ce2012-08-23 18:19:56 +0000102
reed@google.com32287892011-10-05 16:27:44 +0000103#endif
rmistry@google.comae933ce2012-08-23 18:19:56 +0000104
reed@google.com32287892011-10-05 16:27:44 +0000105#if 0
106 SkRect r;
107 r.set(0, 0, this->width(), this->height());
108 r.inset(20, 20);
109 canvas->clipRect(r);
rmistry@google.comae933ce2012-08-23 18:19:56 +0000110
reed@google.com32287892011-10-05 16:27:44 +0000111 SkPath path;
112 path.addRect(r);
113 SkPaint paint;
114 paint.setAntiAlias(true);
115 paint.setColor(SK_ColorRED);
116 canvas->drawPath(path, paint);
117#endif
118 }
119
120private:
121 typedef SkView INHERITED;
122};
123
124//////////////////////////////////////////////////////////////////////////////
125
126static SkView* MyFactory() { return new AAClipView; }
127static SkViewRegister reg(MyFactory);