1 /*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "DecodeFile.h"
9 #include "SampleCode.h"
10 #include "SkView.h"
11 #include "SkCanvas.h"
12 #include "SkCornerPathEffect.h"
13 #include "SkGradientShader.h"
14 #include "SkGraphics.h"
15 #include "SkPath.h"
16 #include "SkRandom.h"
17 #include "SkRegion.h"
18 #include "SkShader.h"
19 #include "SkUtils.h"
20 #include "SkColorPriv.h"
21 #include "SkColorFilter.h"
22 #include "SkTime.h"
23 #include "SkTypeface.h"
24 #include "SkStream.h"
25 #include "SkColorPriv.h"
26
27 class LinesView : public SampleView {
28 public:
LinesView()29 LinesView() {}
30
31 protected:
32 // overrides from SkEventSink
onQuery(SkEvent * evt)33 bool onQuery(SkEvent* evt) override {
34 if (SampleCode::TitleQ(*evt)) {
35 SampleCode::TitleR(evt, "Lines");
36 return true;
37 }
38 return this->INHERITED::onQuery(evt);
39 }
40
41 /*
42 0x1F * x + 0x1F * (32 - x)
43 */
drawRings(SkCanvas * canvas)44 void drawRings(SkCanvas* canvas) {
45 canvas->scale(SkIntToScalar(1)/2, SkIntToScalar(1)/2);
46
47 SkRect r;
48 SkScalar x = SkIntToScalar(10);
49 SkScalar y = SkIntToScalar(10);
50 r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
51
52 SkPaint paint;
53 // paint.setAntiAlias(true);
54 paint.setStyle(SkPaint::kStroke_Style);
55 paint.setStrokeWidth(SkScalarHalf(SkIntToScalar(3)));
56 paint.setColor(0xFFFF8800);
57 // paint.setColor(0xFFFFFFFF);
58 canvas->drawRect(r, paint);
59 }
60
onDrawContent(SkCanvas * canvas)61 void onDrawContent(SkCanvas* canvas) override {
62 SkBitmap bm;
63 decode_file("/kill.gif", &bm);
64 canvas->drawBitmap(bm, 0, 0, nullptr);
65
66 this->drawRings(canvas);
67 return;
68
69 SkPaint paint;
70
71 // fAlpha = 0x80;
72 paint.setColor(SK_ColorWHITE);
73 paint.setAlpha(fAlpha & 0xFF);
74 SkRect r;
75
76 SkScalar x = SkIntToScalar(10);
77 SkScalar y = SkIntToScalar(10);
78 r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
79 canvas->drawRect(r, paint);
80 return;
81
82 paint.setColor(0xffffff00); // yellow
83 paint.setStyle(SkPaint::kStroke_Style);
84 paint.setStrokeWidth(SkIntToScalar(2));
85
86 // y += SK_Scalar1/2;
87
88 canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
89
90 paint.setAntiAlias(true); // with anti-aliasing
91 y += SkIntToScalar(10);
92 canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
93 }
94
onFindClickHandler(SkScalar x,SkScalar y,unsigned)95 SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) override {
96 fAlpha = SkScalarRoundToInt(y);
97 return nullptr;
98 }
99 private:
100
101 int fAlpha;
102 typedef SampleView INHERITED;
103 };
104
105 //////////////////////////////////////////////////////////////////////////////
106
MyFactory()107 static SkView* MyFactory() { return new LinesView; }
108 static SkViewRegister reg(MyFactory);
109