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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 "SkGradientShader.h" | |
13 #include "SkGraphics.h" | |
14 #include "SkImageDecoder.h" | |
15 #include "SkKernel33MaskFilter.h" | |
16 #include "SkPath.h" | |
17 #include "SkRandom.h" | |
18 #include "SkRegion.h" | |
19 #include "SkShader.h" | |
20 #include "SkUtils.h" | |
21 #include "SkColorPriv.h" | |
22 #include "SkColorFilter.h" | |
23 #include "SkTime.h" | |
24 #include "SkTypeface.h" | |
25 #include "SkXfermode.h" | |
26 | |
27 static void lettersToBitmap(SkBitmap* dst, const char chars[], | |
28 const SkPaint& original, SkBitmap::Config config) { | |
29 SkPath path; | |
30 SkScalar x = 0; | |
31 SkScalar width; | |
32 SkPath p; | |
33 for (size_t i = 0; i < strlen(chars); i++) { | |
34 original.getTextPath(&chars[i], 1, x, 0, &p); | |
35 path.addPath(p); | |
36 original.getTextWidths(&chars[i], 1, &width); | |
37 x += width; | |
38 } | |
39 SkRect bounds = path.getBounds(); | |
40 SkScalar sw = -original.getStrokeWidth(); | |
41 bounds.inset(sw, sw); | |
42 path.offset(-bounds.fLeft, -bounds.fTop); | |
43 bounds.offset(-bounds.fLeft, -bounds.fTop); | |
44 | |
45 int w = SkScalarRound(bounds.width()); | |
46 int h = SkScalarRound(bounds.height()); | |
47 SkPaint paint(original); | |
48 SkBitmap src; | |
49 src.setConfig(config, w, h); | |
50 src.allocPixels(); | |
51 src.eraseColor(SK_ColorTRANSPARENT); | |
52 { | |
53 SkCanvas canvas(src); | |
54 paint.setAntiAlias(true); | |
55 paint.setColor(SK_ColorBLACK); | |
56 paint.setStyle(SkPaint::kFill_Style); | |
57 canvas.drawPath(path, paint); | |
58 } | |
59 | |
60 dst->setConfig(config, w, h); | |
61 dst->allocPixels(); | |
62 dst->eraseColor(SK_ColorWHITE); | |
63 { | |
64 SkCanvas canvas(*dst); | |
65 paint.setXfermodeMode(SkXfermode::kDstATop_Mode); | |
66 canvas.drawBitmap(src, 0, 0, &paint); | |
67 paint.setColor(original.getColor()); | |
68 paint.setStyle(SkPaint::kStroke_Style); | |
69 canvas.drawPath(path, paint); | |
70 } | |
71 } | |
72 | |
73 static void lettersToBitmap2(SkBitmap* dst, const char chars[], | |
74 const SkPaint& original, SkBitmap::Config config) { | |
75 SkPath path; | |
76 SkScalar x = 0; | |
77 SkScalar width; | |
78 SkPath p; | |
79 for (size_t i = 0; i < strlen(chars); i++) { | |
80 original.getTextPath(&chars[i], 1, x, 0, &p); | |
81 path.addPath(p); | |
82 original.getTextWidths(&chars[i], 1, &width); | |
83 x += width; | |
84 } | |
85 SkRect bounds = path.getBounds(); | |
86 SkScalar sw = -original.getStrokeWidth(); | |
87 bounds.inset(sw, sw); | |
88 path.offset(-bounds.fLeft, -bounds.fTop); | |
89 bounds.offset(-bounds.fLeft, -bounds.fTop); | |
90 | |
91 int w = SkScalarRound(bounds.width()); | |
92 int h = SkScalarRound(bounds.height()); | |
93 SkPaint paint(original); | |
94 | |
95 paint.setAntiAlias(true); | |
96 paint.setXfermodeMode(SkXfermode::kDstATop_Mode); | |
97 paint.setColor(original.getColor()); | |
98 paint.setStyle(SkPaint::kStroke_Style); | |
99 | |
100 dst->setConfig(config, w, h); | |
101 dst->allocPixels(); | |
102 dst->eraseColor(SK_ColorWHITE); | |
103 | |
104 SkCanvas canvas(*dst); | |
105 canvas.drawPath(path, paint); | |
106 } | |
107 | |
108 class StrokeTextView : public SampleView { | |
109 public: | |
110 StrokeTextView() { | |
111 this->setBGColor(0xFFCC8844); | |
112 } | |
113 | |
114 protected: | |
115 // overrides from SkEventSink | |
116 virtual bool onQuery(SkEvent* evt) { | |
117 if (SampleCode::TitleQ(*evt)) { | |
118 SampleCode::TitleR(evt, "StrokeText"); | |
119 return true; | |
120 } | |
121 return this->INHERITED::onQuery(evt); | |
122 } | |
123 | |
124 virtual void onDrawContent(SkCanvas* canvas) { | |
125 SkBitmap bm; | |
126 SkPaint paint; | |
127 | |
128 paint.setStrokeWidth(SkIntToScalar(6)); | |
129 paint.setTextSize(SkIntToScalar(80)); | |
130 // paint.setTypeface(Typeface.DEFAULT_BOLD); | |
131 | |
132 lettersToBitmap(&bm, "Test Case", paint, SkBitmap::kARGB_4444_Config); | |
133 if (false) { // avoid bit rot, suppress warning | |
134 lettersToBitmap2(&bm, "Test Case", paint, SkBitmap::kARGB_4444_Confi
g); | |
135 } | |
136 canvas->drawBitmap(bm, 0, 0); | |
137 } | |
138 | |
139 private: | |
140 | |
141 typedef SampleView INHERITED; | |
142 }; | |
143 | |
144 ////////////////////////////////////////////////////////////////////////////// | |
145 | |
146 static SkView* MyFactory() { return new StrokeTextView; } | |
147 static SkViewRegister reg(MyFactory); | |
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