qcolormap.cpp

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/home/qt/qt5_coco/qt5/qtbase/src/widgets/util/qcolormap.cpp

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Line Source Count

1 -

2 -

3 -

4 class QColormapPrivate -

5 { -

6 public: -

7 inline QColormapPrivate() -

8 : ref(1), mode(QColormap::Direct), depth(0), numcolors(0) -

9 { } -

10 -

11 QAtomicInt ref; -

12 -

13 QColormap::Mode mode; -

14 int depth; -

15 int numcolors; -

16 }; -

17 -

18 static QColormapPrivate *screenMap = 0; -

19 -

20 void QColormap::initialize() -

21 { -

22 screenMap = new QColormapPrivate; -

if (!(__builtin_expect(!!(!

__builtin_expe...een()), false)	Description
TRUE	never evaluated
FALSE	never evaluated

QGuiApplication::primaryScreen())()), false)

__builtin_expe...een()), false)	Description
TRUE	never evaluated
FALSE	never evaluated

) {

24 QMessageLogger(__FILE__, 6268, __PRETTY_FUNCTION__).warning("no screens available, assuming 24-bit color"); -

25 screenMap->depth = 24; -

26 screenMap->mode = QColormap::Direct; -

return;

never executed: return;

28 } -

29 screenMap->depth = QGuiApplication::primaryScreen()->depth(); -

if (screenMap->depth < 8

screenMap->depth < 8	Description
TRUE	never evaluated
FALSE	never evaluated

) {

31 screenMap->mode = QColormap::Indexed; -

32 screenMap->numcolors = 256; -

}

never executed: end of block

else {

34 screenMap->mode = QColormap::Direct; -

35 screenMap->numcolors = -1; -

}

never executed: end of block

37 } -

38 -

39 void QColormap::cleanup() -

40 { -

41 delete screenMap; -

42 screenMap = 0; -

43 } -

44 -

45 QColormap QColormap::instance(int ) -

46 { -

47 return QColormap(); -

48 } -

49 -

50 QColormap::QColormap() -

51 : d(screenMap) -

52 { d->ref.ref(); } -

53 -

54 QColormap::QColormap(const QColormap &colormap) -

55 :d (colormap.d) -

56 { d->ref.ref(); } -

57 -

58 QColormap::~QColormap() -

59 { -

60 if (!d->ref.deref()) -

61 delete d; -

62 } -

63 -

64 QColormap::Mode QColormap::mode() const -

65 { return d->mode; } -

66 -

67 -

68 int QColormap::depth() const -

69 { return d->depth; } -

70 -

71 -

72 int QColormap::size() const -

73 { -

74 return d->numcolors; -

75 } -

76 -

77 -

78 -

79 -

80 static const int qt_rbits = (565/100); -

81 static const int qt_gbits = (565/10%10); -

82 static const int qt_bbits = (565%10); -

83 static const int qt_red_shift = qt_bbits+qt_gbits-(8-qt_rbits); -

84 static const int qt_green_shift = qt_bbits-(8-qt_gbits); -

85 static const int qt_neg_blue_shift = 8-qt_bbits; -

86 static const int qt_blue_mask = (1<<qt_bbits)-1; -

87 static const int qt_green_mask = (1<<(qt_gbits+qt_bbits))-(1<<qt_bbits); -

88 static const int qt_red_mask = (1<<(qt_rbits+qt_gbits+qt_bbits))-(1<<(qt_gbits+qt_bbits)); -

89 -

90 static const int qt_red_rounding_shift = qt_red_shift + qt_rbits; -

91 static const int qt_green_rounding_shift = qt_green_shift + qt_gbits; -

92 static const int qt_blue_rounding_shift = qt_bbits - qt_neg_blue_shift; -

93 -

94 inline ushort qt_convRgbTo16(QRgb c) -

95 { -

96 const int tr = qRed(c) << qt_red_shift; -

97 const int tg = qGreen(c) << qt_green_shift; -

98 const int tb = qBlue(c) >> qt_neg_blue_shift; -

99 -

100 return (tb & qt_blue_mask) | (tg & qt_green_mask) | (tr & qt_red_mask); -

101 } -

102 -

103 inline QRgb qt_conv16ToRgb(ushort c) -

104 { -

105 const int r=(c & qt_red_mask); -

106 const int g=(c & qt_green_mask); -

107 const int b=(c & qt_blue_mask); -

108 const int tr = r >> qt_red_shift | r >> qt_red_rounding_shift; -

109 const int tg = g >> qt_green_shift | g >> qt_green_rounding_shift; -

110 const int tb = b << qt_neg_blue_shift | b >> qt_blue_rounding_shift; -

111 -

112 return qRgb(tr,tg,tb); -

113 } -

114 -

115 uint QColormap::pixel(const QColor &color) const -

116 { -

117 QRgb rgb = color.rgba(); -

118 if (d->mode == QColormap::Direct) { -

119 switch(d->depth) { -

120 case 16: -

121 return qt_convRgbTo16(rgb); -

122 case 24: -

123 case 32: -

124 { -

125 const int r = qRed(rgb); -

126 const int g = qGreen(rgb); -

127 const int b = qBlue(rgb); -

128 const int red_shift = 16; -

129 const int green_shift = 8; -

130 const int red_mask = 0xff0000; -

131 const int green_mask = 0x00ff00; -

132 const int blue_mask = 0x0000ff; -

133 const int tg = g << green_shift; -

134 -

135 -

136 -

137 -

138 -

139 -

140 const int tr = r << red_shift; -

141 return 0xff000000 | (b & blue_mask) | (tg & green_mask) | (tr & red_mask); -

142 } -

143 } -

144 } -

145 -

146 -

147 return 0; -

148 } -

149 -

150 const QColor QColormap::colorAt(uint pixel) const -

151 { -

152 if (d->mode == Direct) { -

153 if (d->depth == 16) { -

154 pixel = qt_conv16ToRgb(pixel); -

155 } -

156 const int red_shift = 16; -

157 const int green_shift = 8; -

158 const int red_mask = 0xff0000; -

159 const int green_mask = 0x00ff00; -

160 const int blue_mask = 0x0000ff; -

161 -

162 -

163 -

164 -

165 -

166 -

167 -

168 return QColor((pixel & red_mask) >> red_shift, -

169 (pixel & green_mask) >> green_shift, -

170 (pixel & blue_mask)); -

171 } -

172 -

173 -

174 -

175 -

176 return QColor(); -

177 } -

178 -

179 const QVector<QColor> QColormap::colormap() const -

180 { -

181 return QVector<QColor>(); -

182 } -

183 -

184 QColormap &QColormap::operator=(const QColormap &colormap) -

185 { qAtomicAssign(d, colormap.d); return *this; } -

186 -

187 -

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