Preferences/PreferencesLexer.py

Wed, 01 Jan 2014 14:38:45 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Wed, 01 Jan 2014 14:38:45 +0100
changeset 3160
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parent 3025
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child 3178
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permissions
-rw-r--r--

Updated copyright for 2014.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2002 - 2014 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 special QextScintilla lexer to handle the preferences.
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8 """
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9
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10 from PyQt4.QtGui import QColor, QFont, QApplication
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11 from PyQt4.Qsci import QsciLexer
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12
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13 import Preferences
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14 import Globals
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16
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17 class PreferencesLexerError(Exception):
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18 """
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19 Class defining a special error for the PreferencesLexer class.
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20 """
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21 def __init__(self):
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22 """
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23 Constructor
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24 """
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25 self._errorMessage = QApplication.translate(
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26 "PreferencesLexerError",
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27 "Unspecific PreferencesLexer error.")
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28
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29 def __repr__(self):
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30 """
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31 Private method returning a representation of the exception.
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32
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33 @return string representing the error message
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34 """
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35 return repr(self._errorMessage)
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36
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37 def __str__(self):
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38 """
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39 Private method returning a string representation of the exception.
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40
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41 @return string representing the error message
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42 """
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43 return self._errorMessage
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44
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45
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46 class PreferencesLexerLanguageError(PreferencesLexerError):
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47 """
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48 Class defining a special error for the PreferencesLexer class.
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49 """
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50 def __init__(self, language):
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51 """
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52 Constructor
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53
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54 @param language lexer language (string)
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55 """
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56 PreferencesLexerError.__init__(self)
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57 self._errorMessage = QApplication.translate(
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58 "PreferencesLexerError",
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59 'Unsupported Lexer Language: {0}').format(language)
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60
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61
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62 class PreferencesLexer(QsciLexer):
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63 """
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64 Subclass of QsciLexer to implement preferences specific lexer methods.
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65 """
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66 def __init__(self, language, parent=None):
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67 """
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68 Constructor
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69
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70 @param language The lexer language. (string)
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71 @param parent The parent widget of this lexer. (QextScintilla)
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72 @exception PreferencesLexerLanguageError raised to indicate an invalid
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73 lexer language
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74 """
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75 super().__init__(parent)
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76
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77 # These default font families are taken from QScintilla
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78 if Globals.isWindowsPlatform():
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79 self.__defaultFontFamily = "Courier New"
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80 elif Globals.isMacPlatform():
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81 self.__defaultFontFamily = "Courier"
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82 else:
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83 self.__defaultFontFamily = "Bitstream Vera Sans Mono"
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84
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85 # instantiate a lexer object for the given language
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86 import QScintilla.Lexers
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87 lex = QScintilla.Lexers.getLexer(language)
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88 if lex is None:
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89 raise PreferencesLexerLanguageError(language)
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90
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91 # define the local store
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92 self.colours = {}
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93 self.defaultColours = {}
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94 self.papers = {}
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95 self.defaultPapers = {}
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96 self.eolFills = {}
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97 self.defaultEolFills = {}
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98 self.fonts = {}
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99 self.defaultFonts = {}
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100 self.descriptions = {}
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101 self.ind2style = {}
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102 self.styles = []
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103
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104 # fill local store with default values from lexer
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105 # and built up styles list and conversion table from index to style
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106 self.__language = lex.language()
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107
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108 index = 0
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109 for i in range(128):
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110 desc = lex.description(i)
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111 if desc:
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112 self.descriptions[i] = desc
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113 self.styles.append(desc)
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114
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115 self.colours[i] = lex.defaultColor(i)
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116 self.papers[i] = lex.defaultPaper(i)
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117 self.eolFills[i] = lex.defaultEolFill(i)
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118 self.fonts[i] = lex.defaultFont(i)
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119 # Override QScintilla's default font family to
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120 # always use a monospaced font
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121 self.fonts[i].setFamily(self.__defaultFontFamily)
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122
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123 self.defaultColours[i] = lex.defaultColor(i)
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124 self.defaultPapers[i] = lex.defaultPaper(i)
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125 self.defaultEolFills[i] = lex.defaultEolFill(i)
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126 self.defaultFonts[i] = lex.defaultFont(i)
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127 self.defaultFonts[i].setFamily(self.__defaultFontFamily)
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128
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129 self.ind2style[index] = i
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130 index += 1
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131
500
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132 self.colorChanged.connect(self.setColor)
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133 self.eolFillChanged.connect(self.setEolFill)
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parents: 97
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134 self.fontChanged.connect(self.setFont)
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135 self.paperChanged.connect(self.setPaper)
0
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136
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137 # read the last stored values from preferences file
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138 self.readSettings(Preferences.Prefs.settings, "Scintilla")
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139
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140 def defaultColor(self, style):
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parents:
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141 """
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parents:
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142 Public method to get the default colour of a style.
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143
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144 @param style the style number (int)
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145 @return colour
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parents:
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146 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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147 return self.defaultColours[style]
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148
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149 def color(self, style):
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parents:
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150 """
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parents:
diff changeset
151 Public method to get the colour of a style.
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152
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153 @param style the style number (int)
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154 @return colour
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parents:
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155 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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156 return self.colours[style]
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157
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158 def setColor(self, c, style):
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parents:
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159 """
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parents:
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160 Public method to set the colour for a style.
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161
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162 @param c colour (int)
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163 @param style the style number (int)
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164 """
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parents:
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165 self.colours[style] = QColor(c)
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166
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167 def defaultPaper(self, style):
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168 """
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parents:
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169 Public method to get the default background for a style.
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170
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171 @param style the style number (int)
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172 @return colour
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parents:
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173 """
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parents:
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174 return self.defaultPapers[style]
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175
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176 def paper(self, style):
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parents:
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177 """
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parents:
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178 Public method to get the background for a style.
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179
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180 @param style the style number (int)
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181 @return colour
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parents:
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182 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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183 return self.papers[style]
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parents:
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184
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parents:
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185 def setPaper(self, c, style):
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parents:
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186 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
187 Public method to set the background for a style.
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parents:
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188
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parents:
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189 @param c colour (int)
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parents:
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190 @param style the style number (int)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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191 """
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parents:
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192 self.papers[style] = QColor(c)
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193
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parents:
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194 def defaulEolFill(self, style):
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parents:
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195 """
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parents:
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196 Public method to get the default eolFill flag for a style.
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197
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parents:
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198 @param style the style number (int)
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199 @return eolFill flag
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parents:
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200 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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201 return self.defaultEolFills[style]
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parents:
diff changeset
202
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
203 def eolFill(self, style):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
204 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
205 Public method to get the eolFill flag for a style.
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parents:
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206
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parents:
diff changeset
207 @param style the style number (int)
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parents:
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208 @return eolFill flag
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parents:
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209 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
210 return self.eolFills[style]
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211
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parents:
diff changeset
212 def setEolFill(self, eolfill, style):
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diff changeset
213 """
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parents:
diff changeset
214 Public method to set the eolFill flag for a style.
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215
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parents:
diff changeset
216 @param eolfill eolFill flag (boolean)
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parents:
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217 @param style the style number (int)
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parents:
diff changeset
218 """
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parents:
diff changeset
219 self.eolFills[style] = eolfill
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220
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parents:
diff changeset
221 def defaultFont(self, style):
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parents:
diff changeset
222 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
223 Public method to get the default font for a style.
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parents:
diff changeset
224
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parents:
diff changeset
225 @param style the style number (int)
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parents:
diff changeset
226 @return font
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parents:
diff changeset
227 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
228 return self.defaultFonts[style]
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parents:
diff changeset
229
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diff changeset
230 def font(self, style):
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parents:
diff changeset
231 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
232 Public method to get the font for a style.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
233
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parents:
diff changeset
234 @param style the style number (int)
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parents:
diff changeset
235 @return font
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parents:
diff changeset
236 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
237 return self.fonts[style]
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parents:
diff changeset
238
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parents:
diff changeset
239 def setFont(self, f, style):
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parents:
diff changeset
240 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
241 Public method to set the font for a style.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
242
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
243 @param f font
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parents:
diff changeset
244 @param style the style number (int)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
245 """
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parents:
diff changeset
246 self.fonts[style] = QFont(f)
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parents:
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247
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parents:
diff changeset
248 def language(self):
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parents:
diff changeset
249 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
250 Public method to get the lexers programming language.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
251
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parents:
diff changeset
252 @return language
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parents:
diff changeset
253 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
254 return self.__language
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diff changeset
255
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parents:
diff changeset
256 def description(self, style):
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parents:
diff changeset
257 """
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parents:
diff changeset
258 Public method to get a descriptive string for a style.
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parents:
diff changeset
259
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parents:
diff changeset
260 @param style the style number (int)
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parents:
diff changeset
261 @return description of the style (string)
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parents:
diff changeset
262 """
12
1d8dd9706f46 First commit after changing to Python 3.1.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 0
diff changeset
263 if style in self.descriptions:
0
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parents:
diff changeset
264 return self.descriptions[style]
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parents:
diff changeset
265 else:
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parents:
diff changeset
266 return ""

eric ide

mercurial