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
lettersToBitmap(SkBitmap * dst,const char chars[],const SkPaint & original,SkBitmap::Config config)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(0);
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
lettersToBitmap2(SkBitmap * dst,const char chars[],const SkPaint & original,SkBitmap::Config config)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 bool fAA;
110 public:
StrokeTextView()111 StrokeTextView() : fAA(false) {
112 this->setBGColor(0xFFCC8844);
113 }
114
115 protected:
116 // overrides from SkEventSink
onQuery(SkEvent * evt)117 virtual bool onQuery(SkEvent* evt) {
118 if (SampleCode::TitleQ(*evt)) {
119 SampleCode::TitleR(evt, "StrokeText");
120 return true;
121 }
122 return this->INHERITED::onQuery(evt);
123 }
124
onDrawContent(SkCanvas * canvas)125 virtual void onDrawContent(SkCanvas* canvas) {
126 SkBitmap bm;
127 SkPaint paint;
128
129 paint.setStrokeWidth(SkIntToScalar(6));
130 paint.setTextSize(SkIntToScalar(80));
131 // paint.setTypeface(Typeface.DEFAULT_BOLD);
132
133 lettersToBitmap(&bm, "Test Case", paint, SkBitmap::kARGB_4444_Config);
134
135 canvas->drawBitmap(bm, 0, 0);
136 }
137
138 private:
139
140 typedef SampleView INHERITED;
141 };
142
143 //////////////////////////////////////////////////////////////////////////////
144
MyFactory()145 static SkView* MyFactory() { return new StrokeTextView; }
146 static SkViewRegister reg(MyFactory);
147
148