1
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 #include "SampleCode.h"
9 #include "SkView.h"
10 #include "SkCanvas.h"
11 #include "Sk64.h"
12 #include "SkCornerPathEffect.h"
13 #include "SkGradientShader.h"
14 #include "SkGraphics.h"
15 #include "SkImageDecoder.h"
16 #include "SkKernel33MaskFilter.h"
17 #include "SkPath.h"
18 #include "SkRandom.h"
19 #include "SkRegion.h"
20 #include "SkShader.h"
21 #include "SkUtils.h"
22 #include "SkColorPriv.h"
23 #include "SkColorFilter.h"
24 #include "SkTime.h"
25 #include "SkTypeface.h"
26 #include "SkXfermode.h"
27
28 #include "SkStream.h"
29 #include "SkXMLParser.h"
30 #include "SkColorPriv.h"
31 #include "SkImageDecoder.h"
32
33 class LinesView : public SampleView {
34 public:
LinesView()35 LinesView() {}
36
37 protected:
38 // overrides from SkEventSink
onQuery(SkEvent * evt)39 virtual bool onQuery(SkEvent* evt) {
40 if (SampleCode::TitleQ(*evt)) {
41 SampleCode::TitleR(evt, "Lines");
42 return true;
43 }
44 return this->INHERITED::onQuery(evt);
45 }
46
47 /*
48 0x1F * x + 0x1F * (32 - x)
49 */
drawRings(SkCanvas * canvas)50 void drawRings(SkCanvas* canvas) {
51 canvas->scale(SkIntToScalar(1)/2, SkIntToScalar(1)/2);
52
53 SkRect r;
54 SkScalar x = SkIntToScalar(10);
55 SkScalar y = SkIntToScalar(10);
56 r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
57
58 SkPaint paint;
59 // paint.setAntiAlias(true);
60 paint.setStyle(SkPaint::kStroke_Style);
61 paint.setStrokeWidth(SkScalarHalf(SkIntToScalar(3)));
62 paint.setColor(0xFFFF8800);
63 // paint.setColor(0xFFFFFFFF);
64 canvas->drawRect(r, paint);
65 }
66
onDrawContent(SkCanvas * canvas)67 virtual void onDrawContent(SkCanvas* canvas) {
68 SkBitmap bm;
69 SkImageDecoder::DecodeFile("/kill.gif", &bm);
70 canvas->drawBitmap(bm, 0, 0, NULL);
71
72 this->drawRings(canvas);
73 return;
74
75 SkPaint paint;
76
77 // fAlpha = 0x80;
78 paint.setColor(SK_ColorWHITE);
79 paint.setAlpha(fAlpha & 0xFF);
80 SkRect r;
81
82 SkScalar x = SkIntToScalar(10);
83 SkScalar y = SkIntToScalar(10);
84 r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
85 canvas->drawRect(r, paint);
86 return;
87
88 paint.setColor(0xffffff00); // yellow
89 paint.setStyle(SkPaint::kStroke_Style);
90 paint.setStrokeWidth(SkIntToScalar(2));
91
92 // y += SK_Scalar1/2;
93
94 canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
95
96 paint.setAntiAlias(true); // with anti-aliasing
97 y += SkIntToScalar(10);
98 canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
99 }
100
onFindClickHandler(SkScalar x,SkScalar y)101 virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
102 fAlpha = SkScalarRound(y);
103 this->inval(NULL);
104 return NULL;
105 }
106 private:
107
108 int fAlpha;
109 typedef SampleView INHERITED;
110 };
111
112 //////////////////////////////////////////////////////////////////////////////
113
MyFactory()114 static SkView* MyFactory() { return new LinesView; }
115 static SkViewRegister reg(MyFactory);
116
117