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annotate engine/extensions/pychan/autoposition.py @ 366:dcf6f6091868

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Filebrowser: * Created a new function setDirectory. Separated the code from the _selectDir callback * Filebrowser will now refresh current directory after being reopened (Fixes #391)
author cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
date Thu, 29 Oct 2009 20:19:08 +0000
parents dfd48d49c044
children
rev   line source
331
48c99636453e Added Licence header to all pypthon modules in extension/
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1 # -*- coding: utf-8 -*-
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2
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3 # ####################################################################
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4 # Copyright (C) 2005-2009 by the FIFE team
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5 # http://www.fifengine.de
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6 # This file is part of FIFE.
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7 #
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8 # FIFE is free software; you can redistribute it and/or
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9 # modify it under the terms of the GNU Lesser General Public
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10 # License as published by the Free Software Foundation; either
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11 # version 2.1 of the License, or (at your option) any later version.
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12 #
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13 # This library is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 # Lesser General Public License for more details.
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17 #
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18 # You should have received a copy of the GNU Lesser General Public
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19 # License along with this library; if not, write to the
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20 # Free Software Foundation, Inc.,
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21 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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22 # ####################################################################
205
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23
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24 """
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25 Automatic widget positioning
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26 ============================
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27
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28 You can use the C{position_techinque} attribute
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29 on top level widgets which can also be set from xml.
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30
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31 For direct use call L{placeWidget}.
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32 """
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33
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34 from internal import screen_width, screen_height
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35 from exceptions import PyChanException
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36
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37 EXPLICIT = "explicit"
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38 AUTOMATIC = "automatic"
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39
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40 TOP = "top"
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41 LEFT = "left"
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42 RIGHT = "right"
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43 CENTER = "center"
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44 BOTTOM = "bottom"
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45
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46
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47 def _splicePosition(p):
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48 if "+" in p:
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49 technique,delta = p.split("+")
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50 elif "-" in p:
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51 technique,delta = p.split("-")
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52 delta = '-' + delta
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53 else:
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54 technique,delta = p,0
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55 delta = int(delta)
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56 return technique,delta
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57
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58 def _parsePosition(position):
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59 try:
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60 if position == AUTOMATIC:
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61 position = "center+0:center+0"
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62
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63 x_pos,y_pos = position.split(":")
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64 x_pos, x_delta = _splicePosition(x_pos)
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65 y_pos, y_delta = _splicePosition(y_pos)
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66
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67 if x_pos not in [EXPLICIT,LEFT,CENTER,RIGHT]:
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68 raise
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69 if y_pos not in [EXPLICIT,TOP,CENTER,BOTTOM]:
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70 raise
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71 except:
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72 raise PyChanException("Malformed position definition: " + repr(position))
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73 return x_pos,x_delta,y_pos,y_delta
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74
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75 def placeWidget(widget,position):
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76 """
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77 Place a widget according to a string defining relative coordinates to screen borders.
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78
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79 The position definition has to be of the form: C{"<x_pos><x_delta>:<y_pos><y_delta>"}
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80
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81 C{<x_pos>} may be one of:
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82 - left
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83 - right
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84 - center
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85 - explicit
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86
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87 C{<y_pos>} may be one of:
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88 - top
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89 - bottom
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90 - center
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91 - explicit
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92
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93 C{explicit} means that the widgets x or y position will not be touched. The rest should be
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94 self explanatory.
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95
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96 C{<x_delta>} and C{<y_delta>} must be of the form: +pixel_number or -pixel_number. Or comletely
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97 omitted. Note that the sign has to be there for for positive deltas, too.
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98
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99 For brevity two shortcuts exist:
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100 - "explict" -> "explict:explict"
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101 - "automatic" -> "center:center"
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102
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103 A few examples::
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104 "right-20:top"
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105 "center:top+10"
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106 "center:center"
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107
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108 @param widget: The PyChan widget.
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109 @param position: A position definition.
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110
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111 If the position cannot be parsed a L{PyChanException} is thrown.
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112
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113 """
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114 if position == EXPLICIT:
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115 return
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116 x_pos,x_delta,y_pos,y_delta = _parsePosition(position)
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117
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118 x,y = widget.position
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119 w,h = widget.size
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120
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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121 if x_pos == CENTER:
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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122 x = (screen_width()-w)/2 + x_delta
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123
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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124 if y_pos == CENTER:
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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125 y = (screen_height()-h)/2 + y_delta
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126
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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127 if x_pos == LEFT:
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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128 x = x_delta
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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129
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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130 if y_pos == TOP:
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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131 y = y_delta
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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132
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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133 if x_pos == RIGHT:
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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134 x = screen_width() - w + x_delta
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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135
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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136 if y_pos == BOTTOM:
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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137 y = screen_height() - h + y_delta
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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138
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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139 widget.position = x,y
54bfd1015b35 * PyChan event handling rework (part I)
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140
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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141
54bfd1015b35 * PyChan event handling rework (part I)
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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142