annotate orpg/mapper/images.py @ 15:cab94a90f9dc traipse_dev

Added 1.8.0 fix to log. Fixed problem with images that do not load the first time. Problem was in the fetching dict. del path instead.
author sirebral
date Tue, 21 Jul 2009 02:34:21 -0500
parents 28ad6bd3ac71
children 83fb9a73a30f
rev   line source
0
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1 # Copyright (C) 2000-2001 The OpenRPG Project
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2 #
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3 # openrpg-dev@lists.sourceforge.net
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4 #
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5 # This program is free software; you can redistribute it and/or modify
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6 # it under the terms of the GNU General Public License as published by
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7 # the Free Software Foundation; either version 2 of the License, or
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8 # (at your option) any later version.
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9 #
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10 # This program is distributed in the hope that it will be useful,
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11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 # GNU General Public License for more details.
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14 #
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15 # You should have received a copy of the GNU General Public License
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16 # along with this program; if not, write to the Free Software
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17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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18 # --
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19 #
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20 # File: mapper/images.py
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21 # Author: OpenRPG
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22 # Maintainer:
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23 # Version:
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24 # $Id: images.py,v 1.21 2007/12/11 04:07:15 digitalxero Exp $
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25 #
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26 # Description:
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27 #
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28 __version__ = "$Id: images.py,v 1.21 2007/12/11 04:07:15 digitalxero Exp $"
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29
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30 import urllib
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31 import Queue
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32 import thread
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33 from threading import Lock
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34 import time
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35 from orpg.orpg_wx import *
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36 from orpg.orpgCore import *
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37
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38 def singleton(cls):
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39 instances = {}
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40 def getinstance():
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41 if cls not in instances:
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42 instances[cls] = cls()
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43 return instances[cls]
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44 return getinstance()
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45
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46 class ImageHandlerClass(object):
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47 __cache = {}
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48 __fetching = {}
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49 __queue = Queue.Queue(0)
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50 __lock = Lock()
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51
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52 def load(self, path, image_type, imageId):
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53 # Load an image, with a intermideary fetching image shown while it loads in a background thread
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54 if self.__cache.has_key(path):
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55 return wx.ImageFromMime(self.__cache[path][1], self.__cache[path][2]).ConvertToBitmap()
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56 if not self.__fetching.has_key(path):
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57 self.__fetching[path] = True
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58 #Start Image Loading Thread
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59 thread.start_new_thread(self.__loadThread, (path, image_type, imageId))
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60 else:
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61 if self.__fetching[path] is True:
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62 thread.start_new_thread(self.__loadCacheThread, (path, image_type, imageId))
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63 return wx.Bitmap(open_rpg.get_component("dir_struct")["icon"] + "fetching.png", wx.BITMAP_TYPE_PNG)
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64
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65 def directLoad(self, path):
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66 # Directly load an image, no threads
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67 if self.__cache.has_key(path):
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68 return wx.ImageFromMime(self.__cache[path][1], self.__cache[path][2]).ConvertToBitmap()
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69 uriPath = urllib.unquote(path)
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70 try:
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71 d = urllib.urlretrieve(uriPath)
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72 # We have to make sure that not only did we fetch something, but that
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73 # it was an image that we got back.
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74 if d[0] and d[1].getmaintype() == "image":
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75 self.__cache[path] = (path, d[0], d[1].gettype(), None)
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76 return wx.ImageFromMime(self.__cache[path][1], self.__cache[path][2]).ConvertToBitmap()
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77 else:
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78 open_rpg.get_component('log').log("Image refused to load or URI did not reference a valid image: " + path, ORPG_GENERAL, True)
0
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79 return None
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80 except IOError:
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81 open_rpg.get_component('log').log("Unable to resolve/open the specified URI; image was NOT loaded: " + path, ORPG_GENERAL, True)
0
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82 return None
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83
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84 def cleanCache(self):
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85 # Shrinks the Cache down to the proper size
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86 try:
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87 cacheSize = int(open_rpg.get_component('settings').get_setting("ImageCacheSize"))
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88 except:
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89 cacheSize = 32
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90 cache = self.__cache.keys()
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91 cache.sort()
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92 for key in cache[cacheSize:]:
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93 del self.__cache[key]
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94
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95 def flushCache(self):
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96 # This function will flush all images contained within the image cache.
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97 self.__lock.acquire()
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98 try:
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99 keyList = self.__cache.keys()
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100 for key in keyList:
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101 del self.__cache[key]
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102 finally:
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103 self.__lock.release()
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104 urllib.urlcleanup()
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105
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106 #Private Methods
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107 def __loadThread(self, path, image_type, imageId):
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108 uriPath = urllib.unquote(path)
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109 self.__lock.acquire()
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110 try:
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111 d = urllib.urlretrieve(uriPath)
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112 # We have to make sure that not only did we fetch something, but that
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113 # it was an image that we got back.
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114 if d[0] and d[1].getmaintype() == "image":
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115 self.__cache[path] = (path, d[0], d[1].gettype(), imageId)
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116 self.__queue.put((self.__cache[path], image_type, imageId))
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117 if self.__fetching.has_key(path):
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118 del self.__fetching[path]
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119 else:
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120 open_rpg.get_component('log').log("Image refused to load or URI did not reference a valid image: " + path, ORPG_GENERAL, True)
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121 del self.__fetching[path]
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122 except IOError:
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123 del self.__fetching[path]
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124 open_rpg.get_component('log').log("Unable to resolve/open the specified URI; image was NOT laoded: " + path, ORPG_GENERAL, False)
0
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125 finally:
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126 self.__lock.release()
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127
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128 def __loadCacheThread(self, path, image_type, imageId):
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129 try:
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130 st = time.time()
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131 while self.__fetching.has_key(path) and self.__fetching[path] is not False:
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132 time.sleep(0.025)
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133 if (time.time()-st) > 120:
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134 open_rpg.get_component('log').log("Timeout: " + path, ORPG_GENERAL, True)
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135 break
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136 except:
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137 self.__fetching[path] = False
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28ad6bd3ac71 Images fix did not work. Needs further testing. Moving test over to a RC trac.
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138 open_rpg.get_component('log').log("Unable to resolve/open the specified URI; image was NOT loaded: " + path, ORPG_GENERAL, True)
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139 return
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140 self.__lock.acquire()
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141 try:
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142 open_rpg.get_component('log').log("Adding Image to Queue from Cache: " + str(self.__cache[path]), ORPG_DEBUG)
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143 self.__queue.put((self.__cache[path], image_type, imageId))
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144 finally:
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145 self.__lock.release()
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146
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147 #Property Methods
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148 def _getCache(self):
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149 return self.__cache
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150
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151 def _getQueue(self):
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152 return self.__queue
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153
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154 #Properties
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155 Cache = property(_getCache)
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156 Queue = property(_getQueue)
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157
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158 ImageHandler = singleton(ImageHandlerClass)