epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 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 | */ |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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; |
reed@google.com | 261b8e2 | 2011-04-14 17:53:24 +0000 | [diff] [blame] | 33 | for (size_t i = 0; i < strlen(chars); i++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 34 | original.getTextPath(&chars[i], 1, x, 0, &p); |
| 35 | path.addPath(p); |
| 36 | original.getTextWidths(&chars[i], 1, &width); |
| 37 | x += width; |
| 38 | } |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 39 | SkRect bounds = path.getBounds(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 40 | SkScalar sw = -original.getStrokeWidth(); |
| 41 | bounds.inset(sw, sw); |
| 42 | path.offset(-bounds.fLeft, -bounds.fTop); |
| 43 | bounds.offset(-bounds.fLeft, -bounds.fTop); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 44 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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(); |
junov@google.com | dbfac8a | 2012-12-06 21:47:40 +0000 | [diff] [blame] | 51 | src.eraseColor(SK_ColorTRANSPARENT); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 59 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 60 | dst->setConfig(config, w, h); |
| 61 | dst->allocPixels(); |
| 62 | dst->eraseColor(SK_ColorWHITE); |
| 63 | { |
| 64 | SkCanvas canvas(*dst); |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 65 | paint.setXfermodeMode(SkXfermode::kDstATop_Mode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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; |
reed@google.com | 261b8e2 | 2011-04-14 17:53:24 +0000 | [diff] [blame] | 79 | for (size_t i = 0; i < strlen(chars); i++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 80 | original.getTextPath(&chars[i], 1, x, 0, &p); |
| 81 | path.addPath(p); |
| 82 | original.getTextWidths(&chars[i], 1, &width); |
| 83 | x += width; |
| 84 | } |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 85 | SkRect bounds = path.getBounds(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 86 | SkScalar sw = -original.getStrokeWidth(); |
| 87 | bounds.inset(sw, sw); |
| 88 | path.offset(-bounds.fLeft, -bounds.fTop); |
| 89 | bounds.offset(-bounds.fLeft, -bounds.fTop); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 90 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 91 | int w = SkScalarRound(bounds.width()); |
| 92 | int h = SkScalarRound(bounds.height()); |
| 93 | SkPaint paint(original); |
| 94 | |
| 95 | paint.setAntiAlias(true); |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 96 | paint.setXfermodeMode(SkXfermode::kDstATop_Mode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 97 | paint.setColor(original.getColor()); |
| 98 | paint.setStyle(SkPaint::kStroke_Style); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 99 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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 | |
mike@reedtribe.org | 5fd9243 | 2011-05-05 01:59:48 +0000 | [diff] [blame] | 108 | class StrokeTextView : public SampleView { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 109 | bool fAA; |
| 110 | public: |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 111 | StrokeTextView() : fAA(false) { |
mike@reedtribe.org | 5fd9243 | 2011-05-05 01:59:48 +0000 | [diff] [blame] | 112 | this->setBGColor(0xFFCC8844); |
| 113 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 114 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 115 | protected: |
| 116 | // overrides from SkEventSink |
| 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 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 124 | |
mike@reedtribe.org | 5fd9243 | 2011-05-05 01:59:48 +0000 | [diff] [blame] | 125 | virtual void onDrawContent(SkCanvas* canvas) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 126 | SkBitmap bm; |
| 127 | SkPaint paint; |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 128 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 129 | paint.setStrokeWidth(SkIntToScalar(6)); |
| 130 | paint.setTextSize(SkIntToScalar(80)); |
| 131 | // paint.setTypeface(Typeface.DEFAULT_BOLD); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 132 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 133 | lettersToBitmap(&bm, "Test Case", paint, SkBitmap::kARGB_4444_Config); |
caryclark@google.com | 02939ce | 2012-06-06 12:09:51 +0000 | [diff] [blame] | 134 | if (false) { // avoid bit rot, suppress warning |
| 135 | lettersToBitmap2(&bm, "Test Case", paint, SkBitmap::kARGB_4444_Config); |
| 136 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 137 | canvas->drawBitmap(bm, 0, 0); |
| 138 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 139 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 140 | private: |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 141 | |
mike@reedtribe.org | 5fd9243 | 2011-05-05 01:59:48 +0000 | [diff] [blame] | 142 | typedef SampleView INHERITED; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 143 | }; |
| 144 | |
| 145 | ////////////////////////////////////////////////////////////////////////////// |
| 146 | |
| 147 | static SkView* MyFactory() { return new StrokeTextView; } |
| 148 | static SkViewRegister reg(MyFactory); |