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annotate engine/extensions/pychan/internal.py @ 205:54bfd1015b35

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* PyChan event handling rework (part I) ** Unified listeners ** ...hopefully more robust attach/detach code. * Added compat, layout and also the new autopsition feature. * Documentation * Minor style fixes in core.
author phoku@33b003aa-7bff-0310-803a-e67f0ece8222
date Sat, 14 Mar 2009 12:13:29 +0000
parents
children 40257a6dc57d
rev   line source
205
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1 # coding: utf-8
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2
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3 from compat import guichan, in_fife
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4 import widgets
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5 import fonts
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6 from exceptions import *
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7 from traceback import print_exc
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8
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9 def get_manager():
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10 """
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11 Get the manager from inside pychan.
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12
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13 To avoid cyclic imports write::
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14 from internal import get_manager
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15 """
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16 return Manager.manager
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17
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18 def screen_width():
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19 return get_manager().hook.screen_width
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20
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21 def screen_height():
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22 return get_manager().hook.screen_height
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23
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24 class Manager(object):
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25 manager = None
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26
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27 def __init__(self, hook, debug = False):
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28 super(Manager,self).__init__()
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29 self.hook = hook
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30 self.debug = debug
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31
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32 if in_fife:
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33 if not hook.engine.getEventManager():
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34 raise InitializationError("No event manager installed.")
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35 if not hook.engine.getGuiManager():
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36 raise InitializationError("No GUI manager installed.")
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37
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38 self.fonts = {}
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39 #glyphs = ' abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.,!?-+/:();%`\'*#=[]"'
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40 self.fonts['default'] = hook.default_font
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41
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42 self.styles = {}
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43 self.addStyle('default',DEFAULT_STYLE)
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44
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45 Manager.manager = self
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46
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47 # Setup synchronous dialogs
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48 self.mainLoop = None
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49 self.breakFromMainLoop = None
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50 self.can_execute = False
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51
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52 # Autopos
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53 from autoposition import placeWidget
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54 self.placeWidget = placeWidget
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55
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56 def setupModalExecution(self,mainLoop,breakFromMainLoop):
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57 """
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58 Setup synchronous execution of dialogs.
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59 """
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60 self.mainLoop = mainLoop
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61 self.breakFromMainLoop = breakFromMainLoop
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62 self.can_execute = True
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63
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64 def show(self,widget):
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65 """
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66 Shows a widget on screen. Used by L{Widget.show} - do not use directly.
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67 """
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68 self.placeWidget(widget, widget.position_technique)
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69 self.hook.add_widget( widget.real_widget )
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70
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71 def hide(self,widget):
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72 """
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73 Hides a widget again. Used by L{Widget.hide} - do not use directly.
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74 """
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75 self.hook.remove_widget( widget.real_widget )
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76
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77 def setDefaultFont(self,name):
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78 self.fonts['default'] = self.getFont(name)
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79
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80 def getFont(self,name):
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81 """
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82 B{pending deprecation}
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83
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84 Returns a GuiFont identified by its name.
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85
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86 @param name: A string identifier from the font definitions in pychans config files.
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87 """
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88 if in_fife:
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89 font = self.fonts.get(name)
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90 if isinstance(font,guichan.GuiFont):
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91 return font
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92 if hasattr(font,"font") and isinstance(getattr(font,"font"),guichan.GuiFont):
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93 return font.font
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94 return fonts.parseFontSpec(name)
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95 else:
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96 return self.hook.get_font(name)
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97
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98 def addFont(self,font):
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99 """
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100 B{deprecated}
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101
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102 Add a font to the font registry. It's not necessary to call this directly.
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103 But it expects a L{Font} instance and throws an L{InitializationError}
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104 otherwise.
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105
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106 @param font: A L{Font} instance.
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107 """
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108 if not isinstance(font,fonts.Font):
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109 raise InitializationError("PyChan Manager expected a fonts.Font instance, not %s." % repr(font))
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110 self.fonts[font.name] = font
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111
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112 def addStyle(self,name,style):
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113 style = self._remapStyleKeys(style)
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114
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115 for k,v in self.styles.get('default',{}).items():
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116 style[k] = style.get(k,v)
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117 self.styles[name] = style
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118
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119 def stylize(self,widget, style, **kwargs):
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120 style = self.styles[style]
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121 for k,v in style.get('default',{}).items():
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122 v = kwargs.get(k,v)
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123 setattr(widget,k,v)
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124
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125 cls = widget.__class__
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126 for applicable,specstyle in style.items():
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127 if not isinstance(applicable,tuple):
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128 applicable = (applicable,)
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129 if cls in applicable:
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130 for k,v in specstyle.items():
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131 v = kwargs.get(k,v)
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132 setattr(widget,k,v)
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133
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134 def _remapStyleKeys(self,style):
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135 # Remap class names, create copy:
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136 def _toClass(class_):
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137 if class_ == "default":
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138 return class_
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139
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140 if type(class_) == type(widgets.Widget) and issubclass(class_,widgets.Widget):
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141 return class_
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142 if not widgets.WIDGETS.has_key(str(class_)):
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143 raise InitializationError("Can't resolve %s to a widget class." % repr(class_))
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144 return widgets.WIDGETS[str(class_)]
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145
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146 style_copy = {}
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147 for k,v in style.items():
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148 if isinstance(k,tuple):
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149 new_k = tuple(map(_toClass,k))
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150 else:
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151 new_k = _toClass(k)
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152 style_copy[new_k] = v
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153 return style_copy
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154
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155 def loadImage(self,filename):
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156 if not filename:
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157 raise InitializationError("Empty Image file.")
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158 return self.hook.load_image(filename)
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159
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160 # Default Widget style.
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161
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162 DEFAULT_STYLE = {
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163 'default' : {
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164 'border_size': 0,
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165 'margins': (0,0),
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166 'base_color' : guichan.Color(28,28,28),
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167 'foreground_color' : guichan.Color(255,255,255),
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168 'background_color' : guichan.Color(50,50,50),
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169 },
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170 'Button' : {
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171 'border_size': 2,
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172 'margins' : (5,2),
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173 'min_size' : (15,10),
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174 },
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175 'CheckBox' : {
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176 'border_size': 0,
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177 },
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178 'RadioButton' : {
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179 'border_size': 0,
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180 'background_color' : guichan.Color(0,0,0),
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181 },
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182 'Label' : {
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183 'border_size': 0,
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184 },
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185 'ClickLabel' : {
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186 'border_size': 0,
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187 },
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188 'ListBox' : {
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189 'border_size': 0,
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190 },
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191 'Window' : {
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192 'border_size': 0,
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193 'margins': (5,5),
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194 'opaque' : 1,
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195 'titlebar_height' : 12,
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196 'vexpanding' : 1,
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197 #'background_image' : 'gui/backgrounds/background.png',
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198 #'font' : 'samanata_large'
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199 },
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200 'TextBox' : {
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201 },
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202 ('Container','HBox','VBox') : {
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203 'border_size': 0,
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204 'margins': (0,0),
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205 'padding':2,
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206 #'background_image' : 'gui/backgrounds/background.png',
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207 }
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208 }