OLD | NEW |
| (Empty) |
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 "SkDevice.h" | |
12 #include "SkPaint.h" | |
13 #include "SkShader.h" | |
14 | |
15 static SkBitmap createBitmap(int n) { | |
16 SkBitmap bitmap; | |
17 bitmap.allocN32Pixels(n, n); | |
18 bitmap.eraseColor(SK_ColorTRANSPARENT); | |
19 | |
20 SkCanvas canvas(bitmap); | |
21 SkRect r; | |
22 r.set(0, 0, SkIntToScalar(n), SkIntToScalar(n)); | |
23 SkPaint paint; | |
24 paint.setAntiAlias(true); | |
25 | |
26 paint.setColor(SK_ColorRED); | |
27 canvas.drawOval(r, paint); | |
28 paint.setColor(SK_ColorBLUE); | |
29 paint.setStrokeWidth(SkIntToScalar(n)/15); | |
30 paint.setStyle(SkPaint::kStroke_Style); | |
31 canvas.drawLine(0, 0, r.fRight, r.fBottom, paint); | |
32 canvas.drawLine(0, r.fBottom, r.fRight, 0, paint); | |
33 | |
34 return bitmap; | |
35 } | |
36 | |
37 class MipMapView : public SampleView { | |
38 SkBitmap fBitmap; | |
39 enum { | |
40 N = 64 | |
41 }; | |
42 bool fOnce; | |
43 public: | |
44 MipMapView() { | |
45 fOnce = false; | |
46 } | |
47 | |
48 void init() { | |
49 if (fOnce) { | |
50 return; | |
51 } | |
52 fOnce = true; | |
53 | |
54 fBitmap = createBitmap(N); | |
55 | |
56 fWidth = N; | |
57 } | |
58 | |
59 protected: | |
60 // overrides from SkEventSink | |
61 virtual bool onQuery(SkEvent* evt) { | |
62 if (SampleCode::TitleQ(*evt)) { | |
63 SampleCode::TitleR(evt, "MipMaps"); | |
64 return true; | |
65 } | |
66 return this->INHERITED::onQuery(evt); | |
67 } | |
68 | |
69 virtual void onDrawContent(SkCanvas* canvas) { | |
70 this->init(); | |
71 | |
72 static const SkPaint::FilterLevel gLevel[] = { | |
73 SkPaint::kNone_FilterLevel, | |
74 SkPaint::kLow_FilterLevel, | |
75 SkPaint::kMedium_FilterLevel, | |
76 SkPaint::kHigh_FilterLevel, | |
77 }; | |
78 | |
79 SkPaint paint; | |
80 | |
81 for (size_t i = 0; i < SK_ARRAY_COUNT(gLevel); ++i) { | |
82 SkScalar x = 10.0f + i * 100; | |
83 SkScalar y = 10.0f; | |
84 | |
85 paint.setFilterLevel(gLevel[i]); | |
86 | |
87 canvas->drawBitmap(fBitmap, x, y, &paint); | |
88 } | |
89 this->inval(NULL); | |
90 } | |
91 | |
92 private: | |
93 int fWidth; | |
94 | |
95 typedef SampleView INHERITED; | |
96 }; | |
97 | |
98 ////////////////////////////////////////////////////////////////////////////// | |
99 | |
100 static SkView* MyFactory() { return new MipMapView; } | |
101 static SkViewRegister reg(MyFactory); | |
OLD | NEW |