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annotate pyntnclick/widgets/base.py @ 711:e9265818a96c pyntnclick

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Add image widget for rect_drawer
author Neil Muller <neil@dip.sun.ac.za>
date Sun, 05 Aug 2012 14:54:49 +0200
parents 58d78038a197
children 3b2d1adca59c
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1 import collections
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2
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3 import pygame
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4 from pygame.locals import (MOUSEBUTTONDOWN, MOUSEBUTTONUP,
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5 MOUSEMOTION, SRCALPHA, USEREVENT)
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6
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f9f04cb35697 s/mamba/pyntnclick/
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7 from pyntnclick.engine import UserEvent
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8
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9
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10 class Widget(object):
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11
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12 highlight_cursor = False
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13
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14 def __init__(self, rect, gd):
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15 if not isinstance(rect, pygame.Rect):
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16 rect = pygame.Rect(rect, (0, 0))
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17 self.rect = rect
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18 self.gd = gd
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19 self.resource = gd.resource
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20 self.modal = False
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21 self.parent = None
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22 self.disabled = False
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23 self.callbacks = collections.defaultdict(list)
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24 # To track which widget the mouse is over
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25 self.mouseover_widget = self
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26
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27 def set_parent(self, parent):
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28 self.parent = parent
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29
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30 def add_callback(self, eventtype, callback, *args):
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31 self.callbacks[eventtype].append((callback, args))
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32
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33 def event(self, ev):
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34 "Don't override this without damn good reason"
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35 if self.disabled:
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36 return True
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37
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38 type_ = ev.type
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39 if type_ == USEREVENT:
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40 for k in self.callbacks.iterkeys():
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41 if (isinstance(k, type) and issubclass(k, UserEvent)
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42 and k.matches(ev)):
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43 type_ = k
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44 break
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45
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46 for callback, args in self.callbacks[type_]:
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47 if callback(ev, self, *args):
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48 return True
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49 return False
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50
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51 def draw(self, surface):
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52 "Override me"
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53 pass
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54
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55 def disable(self):
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56 if not self.disabled:
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57 self.disabled = True
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58 if hasattr(self, 'prepare'):
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59 self.prepare()
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60
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61 def enable(self):
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62 if self.disabled:
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63 self.disabled = False
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64 if hasattr(self, 'prepare'):
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65 self.prepare()
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66
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67 def global_to_local(self, pos):
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68 x, y = pos
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69 return (x - self.rect.left, y - self.rect.top)
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70
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71
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72 class Button(Widget):
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73
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74 highlight_cursor = True
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75
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76 def event(self, ev):
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77 if super(Button, self).event(ev):
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78 return True
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79 if ev.type == MOUSEBUTTONDOWN:
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80 for callback, args in self.callbacks['clicked']:
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81 if callback(ev, self, *args):
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82 return True
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83 return False
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84
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85 def forced_click(self):
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86 """Force calling the clicked handler"""
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87 for callback, args in self.callbacks['clicked']:
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88 if callback(None, self, *args):
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89 return True
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90 return False
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91
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92
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93 class Container(Widget):
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94
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95 def __init__(self, rect, gd):
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96 if rect is None:
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97 rect = pygame.Rect(0, 0, 0, 0)
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98 super(Container, self).__init__(rect, gd)
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99 self.children = []
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100
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101 def event(self, ev):
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102 """Push an event down through the tree, and fire our own event as a
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103 last resort
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104 """
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105 self.mouseover_widget = self
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106 if ev.type in (MOUSEMOTION, MOUSEBUTTONUP, MOUSEBUTTONDOWN):
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107 for child in self.children[:]:
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108 if child.rect.collidepoint(ev.pos):
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109 result = child.event(ev)
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110 self.mouseover_widget = child.mouseover_widget
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111 if result:
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112 return True
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113
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114 else:
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115 # Other events go to all children first
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116 for child in self.children[:]:
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117 if child.event(ev):
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118 return True
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119 if super(Container, self).event(ev):
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120 return True
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121
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122 def add(self, widget):
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123 widget.set_parent(self)
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124 self.children.append(widget)
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125 self.rect = self.rect.union(widget.rect)
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126 return widget
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127
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128 def remove(self, widget):
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129 widget.set_parent(None)
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130 self.children.remove(widget)
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131
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132 def remove_all(self):
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133 for widget in reversed(self.children[:]):
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134 self.remove(widget)
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135
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136 def draw(self, surface):
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137 for child in self.children:
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138 child.draw(surface)
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139
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140
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141 class ModalStackContainer(Container):
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142
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143 def __init__(self, rect, gd, obscure_color=None):
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144 super(ModalStackContainer, self).__init__(rect, gd)
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145 if obscure_color is None:
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146 obscure_color = gd.constants.modal_obscure_color
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147 self.obscure_color = convert_color(obscure_color)
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148
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149 @property
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150 def top(self):
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151 if self.children:
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152 return self.children[-1]
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153 return None
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154
678
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155 def event(self, ev):
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156 """Only the topmost child gets events.
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157 """
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158 self.mouseover_widget = self
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159 if self.top:
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160 self.mouseover_widget = self.top.mouseover_widget
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161 if self.top.event(ev):
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162 return True
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163
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164 # We skip Container's event() method and hop straight to its parent's.
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165 if super(Container, self).event(ev):
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166 return True
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167
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168 def is_top(self, widget):
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169 return self.top is widget
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170
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171 def draw(self, surface):
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172 obscure = pygame.Surface(self.rect.size, SRCALPHA)
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173 obscure.fill(self.obscure_color)
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174 for child in self.children:
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175 surface.blit(obscure, self.rect)
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176 child.draw(surface)
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177
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178
555
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179 class GridContainer(Container):
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180 """Hacky container that only supports grids, won't work with Container
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181 children, or modal children.
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182 """
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183
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184 def __init__(self, width, rect=None):
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185 super(GridContainer, self).__init__(rect)
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186 self.width = width
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187
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188 def add(self, widget):
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189 assert not isinstance(widget, Container)
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190 assert not widget.modal
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191 super(GridContainer, self).add(widget)
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192
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193
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194 class Box(Container):
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195 """A container that draws a filled background with a border"""
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196 padding = 4
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197
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198 def draw(self, surface):
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199 expandrect = self.rect.move((-self.padding, -self.padding))
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200 expandrect.width = self.rect.width + 2 * self.padding
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201 expandrect.height = self.rect.height + 2 * self.padding
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202 border = pygame.Surface(expandrect.size, SRCALPHA)
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203 border.fill(pygame.Color('black'))
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204 surface.blit(border, expandrect)
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205 background = pygame.Surface(self.rect.size, SRCALPHA)
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206 background.fill(pygame.Color('gray'))
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207 surface.blit(background, self.rect)
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208 super(Box, self).draw(surface)
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209
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210
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211 def convert_color(color):
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212 """Give me a pygame Color, dammit"""
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213 if isinstance(color, pygame.Color):
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214 return color
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215 if isinstance(color, basestring):
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216 return pygame.Color(color)
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217 return pygame.Color(*color)
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218
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219
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220 class ModalWrapper(Container):
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221 "A wrapper around a widget that removes itself when a mouse click occurs"
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222
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223 def __init__(self, widget, close_callback=None):
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224 super(ModalWrapper, self).__init__(widget.rect, widget.gd)
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225 self.close_callback = close_callback
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226 self.add(widget)
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227 self.add_callback(MOUSEBUTTONDOWN, self.close)
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228 widget.add_callback(MOUSEBUTTONDOWN, self.close)
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229
694
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230 def set_parent(self, parent):
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231 super(ModalWrapper, self).set_parent(parent)
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232 if parent:
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233 self.rect = self.parent.rect
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234
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235 def close(self, ev, widget):
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236 if self.parent:
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237 self.parent.remove(self)
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238 if self.close_callback:
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239 self.close_callback()
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diff changeset
240 return True
711
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241
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242
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243 class Image(Widget):
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244 """Basic widget that draws an image, with an associated rect"""
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245
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246 def __init__(self, rect, gd, image):
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247 super(Image, self).__init__(rect, gd)
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248 self.image = image
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249 self.rect.width = image.get_rect().width
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250 self.rect.height = image.get_rect().height
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251 self.visible = True
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252
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253 def draw(self, surface):
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254 if self.visible:
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255 surface.blit(self.image, self.rect)