samplecode/SampleStrokeText.cpp - Issue 17335008: remove dst/rendertarget support for kARGB_4444_Config

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Issue 17335008: remove dst/rendertarget support for kARGB_4444_Config (Closed) Base URL: https://skia.googlecode.com/svn/trunk

Patch Set: Created 7 years, 6 months ago

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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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