eric6/IconEditor/IconEditorPalette.py

Sat, 31 Aug 2019 12:58:11 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 31 Aug 2019 12:58:11 +0200
branch
without_py2_and_pyqt4
changeset 7192
a22eee00b052
parent 6942
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child 7229
53054eb5b15a
permissions
-rw-r--r--

Started removing runtime support for Python2 and PyQt4.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing a palette widget for the icon editor.
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8 """
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9
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10 from __future__ import unicode_literals
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11
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12 from PyQt5.QtCore import pyqtSignal, Qt
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13 from PyQt5.QtGui import QColor, QPainter, QPixmap
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14 from PyQt5.QtWidgets import QWidget, QBoxLayout, QLabel, QFrame, QPushButton, \
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15 QSpinBox, QGroupBox, QVBoxLayout, QRadioButton, QSpacerItem, QSizePolicy, \
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16 QColorDialog
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17
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18
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19 class IconEditorPalette(QWidget):
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20 """
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21 Class implementing a palette widget for the icon editor.
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22
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23 @signal colorSelected(QColor) emitted after a new color has been selected
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24 @signal compositingChanged(QPainter.CompositionMode) emitted to signal a
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25 change of the compositing mode
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26 """
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27 colorSelected = pyqtSignal(QColor)
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28 compositingChanged = pyqtSignal(QPainter.CompositionMode)
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29
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30 def __init__(self, parent=None):
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31 """
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32 Constructor
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33
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34 @param parent reference to the parent widget (QWidget)
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35 """
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36 super(IconEditorPalette, self).__init__(parent)
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37
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38 if self.layoutDirection == Qt.Horizontal:
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39 direction = QBoxLayout.LeftToRight
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40 else:
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41 direction = QBoxLayout.TopToBottom
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42 self.__layout = QBoxLayout(direction, self)
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43 self.setLayout(self.__layout)
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44
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45 self.__preview = QLabel(self)
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46 self.__preview.setFrameStyle(QFrame.Panel | QFrame.Sunken)
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47 self.__preview.setFixedHeight(64)
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48 self.__preview.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
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49 self.__preview.setWhatsThis(self.tr(
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50 """<b>Preview</b>"""
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51 """<p>This is a 1:1 preview of the current icon.</p>"""
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52 ))
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53 self.__layout.addWidget(self.__preview)
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54
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55 self.__color = QLabel(self)
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56 self.__color.setFrameStyle(QFrame.Panel | QFrame.Sunken)
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57 self.__color.setFixedHeight(24)
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58 self.__color.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
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59 self.__color.setWhatsThis(self.tr(
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60 """<b>Current Color</b>"""
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61 """<p>This is the currently selected color used for drawing.</p>"""
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62 ))
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63 self.__layout.addWidget(self.__color)
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64
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65 self.__colorTxt = QLabel(self)
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66 self.__colorTxt.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
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67 self.__colorTxt.setWhatsThis(self.tr(
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68 """<b>Current Color Value</b>"""
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69 """<p>This is the currently selected color value used for"""
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70 """ drawing.</p>"""
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71 ))
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72 self.__layout.addWidget(self.__colorTxt)
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73
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74 self.__colorButton = QPushButton(self.tr("Select Color"), self)
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75 self.__colorButton.setWhatsThis(self.tr(
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76 """<b>Select Color</b>"""
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77 """<p>Select the current drawing color via a color selection"""
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78 """ dialog.</p>"""
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79 ))
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80 self.__colorButton.clicked.connect(self.__selectColor)
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81 self.__layout.addWidget(self.__colorButton)
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82
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83 self.__colorAlpha = QSpinBox(self)
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84 self.__colorAlpha.setRange(0, 255)
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85 self.__colorAlpha.setWhatsThis(self.tr(
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86 """<b>Select alpha channel value</b>"""
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87 """<p>Select the value for the alpha channel of the current"""
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88 """ color.</p>"""
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89 ))
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90 self.__layout.addWidget(self.__colorAlpha)
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91 self.__colorAlpha.valueChanged[int].connect(self.__alphaChanged)
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92
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93 self.__compositingGroup = QGroupBox(self.tr("Compositing"), self)
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94 self.__compositingGroupLayout = QVBoxLayout(self.__compositingGroup)
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95 self.__compositingGroup.setLayout(self.__compositingGroupLayout)
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96 self.__sourceButton = QRadioButton(self.tr("Replace"),
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97 self.__compositingGroup)
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98 self.__sourceButton.setWhatsThis(self.tr(
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99 """<b>Replace</b>"""
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100 """<p>Replace the existing pixel with a new color.</p>"""
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101 ))
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102 self.__sourceButton.clicked[bool].connect(self.__compositingChanged)
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103 self.__compositingGroupLayout.addWidget(self.__sourceButton)
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104 self.__sourceOverButton = QRadioButton(self.tr("Blend"),
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105 self.__compositingGroup)
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106 self.__sourceOverButton.setWhatsThis(self.tr(
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107 """<b>Blend</b>"""
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108 """<p>Blend the new color over the existing pixel.</p>"""
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109 ))
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110 self.__sourceOverButton.setChecked(True)
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111 self.__sourceOverButton.clicked[bool].connect(
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112 self.__compositingChanged)
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113 self.__compositingGroupLayout.addWidget(self.__sourceOverButton)
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114 self.__layout.addWidget(self.__compositingGroup)
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115
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116 spacer = QSpacerItem(
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117 10, 10, QSizePolicy.Minimum, QSizePolicy.Expanding)
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118 self.__layout.addItem(spacer)
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119
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120 def previewChanged(self, pixmap):
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121 """
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122 Public slot to update the preview.
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123
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124 @param pixmap new preview pixmap (QPixmap)
0
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125 """
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126 self.__preview.setPixmap(pixmap)
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127
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128 def colorChanged(self, color):
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129 """
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130 Public slot to update the color preview.
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131
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132 @param color new color (QColor)
0
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133 """
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134 self.__currentColor = color
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135 self.__currentAlpha = color.alpha()
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136
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137 pm = QPixmap(90, 18)
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138 pm.fill(color)
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139 self.__color.setPixmap(pm)
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140
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141 self.__colorTxt.setText(
414
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142 "{0:d}, {1:d}, {2:d}, {3:d}".format(
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143 color.red(), color.green(), color.blue(), color.alpha()))
0
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144
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145 self.__colorAlpha.setValue(self.__currentAlpha)
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146
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147 def __selectColor(self):
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148 """
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149 Private slot to select a new drawing color.
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150 """
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151 col = QColorDialog.getColor(self.__currentColor)
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152 col.setAlpha(self.__currentAlpha)
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153
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154 if col.isValid():
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155 self.colorSelected.emit(col)
0
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156
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157 def __alphaChanged(self, val):
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158 """
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159 Private slot to track changes of the alpha channel.
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160
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161 @param val value of the alpha channel
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162 """
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163 if val != self.__currentAlpha:
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8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
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parents: 826
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164 col = QColor(self.__currentColor)
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165 col.setAlpha(val)
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166 self.colorSelected.emit(col)
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167
619
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168 def setCompositingMode(self, mode):
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169 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 618
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170 Public method to set the compositing mode.
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parents: 618
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171
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172 @param mode compositing mode to set (QPainter.CompositionMode)
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173 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 618
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174 if mode == QPainter.CompositionMode_Source:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 618
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175 self.__sourceButton.setChecked(True)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 618
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176 elif mode == QPainter.CompositionMode_SourceOver:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 618
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177 self.__sourceOverButton.setChecked(True)
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178
618
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179 def __compositingChanged(self, on):
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Detlev Offenbach <detlev@die-offenbachs.de>
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180 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 495
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181 Private slot to handle a change of the compositing mode.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 495
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182
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parents: 2957
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183 @param on flag indicating the checked state of the compositing button
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184 (boolean)
618
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185 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 495
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186 if on:
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187 if self.__sourceButton.isChecked():
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2957
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188 self.compositingChanged.emit(
dbdf27746da5 Continued to shorten the code lines to max. 79 characters.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2957
diff changeset
189 QPainter.CompositionMode_Source)
618
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 495
diff changeset
190 elif self.__sourceOverButton.isChecked():
2992
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2957
diff changeset
191 self.compositingChanged.emit(
dbdf27746da5 Continued to shorten the code lines to max. 79 characters.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2957
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192 QPainter.CompositionMode_SourceOver)

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