Mercurial > traipse_dev
annotate orpg/mapper/images.py @ 71:449a8900f9ac ornery-dev
Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
author | sirebral |
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date | Thu, 20 Aug 2009 03:00:39 -0500 |
parents | c54768cffbd4 |
children | 37a11fea3304 |
rev | line source |
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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 component |
66 | 37 from orpg.dirpath import dir_struct |
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38 from orpg.tools.orpg_log import logger |
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39 |
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40 def singleton(cls): |
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41 instances = {} |
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42 def getinstance(): |
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43 if cls not in instances: |
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44 instances[cls] = cls() |
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45 return instances[cls] |
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46 return getinstance() |
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47 |
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48 class ImageHandlerClass(object): |
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49 __cache = {} |
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50 __fetching = {} |
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51 __queue = Queue.Queue(0) |
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52 __lock = Lock() |
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53 |
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54 def load(self, path, image_type, imageId): |
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55 """Load an image, with a intermideary fetching image shown while it loads in a background thread""" |
20 | 56 if self.__cache.has_key(path): return wx.ImageFromMime(self.__cache[path][1], |
57 self.__cache[path][2]).ConvertToBitmap() | |
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58 if not self.__fetching.has_key(path): |
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59 self.__fetching[path] = True |
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60 """Start Image Loading Thread""" |
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61 thread.start_new_thread(self.__loadThread, (path, image_type, imageId)) |
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62 else: |
20 | 63 if self.__fetching[path] is True: thread.start_new_thread(self.__loadCacheThread, (path, image_type, imageId)) |
66 | 64 return wx.Bitmap(dir_struct["icon"] + "fetching.png", wx.BITMAP_TYPE_PNG) |
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65 |
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66 def directLoad(self, path): |
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67 """Directly load an image, no threads""" |
20 | 68 if self.__cache.has_key(path): return wx.ImageFromMime(self.__cache[path][1], |
69 self.__cache[path][2]).ConvertToBitmap() | |
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70 uriPath = urllib.unquote(path) |
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71 try: |
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72 d = urllib.urlretrieve(uriPath) |
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73 """We have to make sure that not only did we fetch something, but that |
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74 it was an image that we got back.""" |
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75 if d[0] and d[1].getmaintype() == "image": |
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76 self.__cache[path] = (path, d[0], d[1].gettype(), None) |
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77 return wx.ImageFromMime(self.__cache[path][1], self.__cache[path][2]).ConvertToBitmap() |
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78 else: |
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79 logger.general("Image refused to load or URI did not reference a valid image: " + path) ##logger.general |
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80 return None |
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81 except IOError: |
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82 logger.general("Unable to resolve/open the specified URI; image was NOT loaded: " + path) ##logger.general |
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83 return None |
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84 |
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85 def cleanCache(self): |
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86 """Shrinks the Cache down to the proper size""" |
66 | 87 try: cacheSize = int(component.get('settings').get_setting("ImageCacheSize")) |
20 | 88 except: cacheSize = 32 |
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89 cache = self.__cache.keys() |
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90 cache.sort() |
20 | 91 for key in cache[cacheSize:]: del self.__cache[key] |
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92 |
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93 def flushCache(self): |
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94 """This function will flush all images contained within the image cache.""" |
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95 self.__lock.acquire() |
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96 try: |
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97 keyList = self.__cache.keys() |
20 | 98 for key in keyList: del self.__cache[key] |
99 finally: self.__lock.release() | |
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100 urllib.urlcleanup() |
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101 |
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102 """Private Methods""" |
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103 def __loadThread(self, path, image_type, imageId): |
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104 uriPath = urllib.unquote(path) |
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105 self.__lock.acquire() |
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106 try: |
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107 d = urllib.urlretrieve(uriPath) |
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108 """We have to make sure that not only did we fetch something, but that |
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109 it was an image that we got back.""" |
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110 if d[0] and d[1].getmaintype() == "image": |
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111 self.__cache[path] = (path, d[0], d[1].gettype(), imageId) |
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112 self.__queue.put((self.__cache[path], image_type, imageId)) |
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113 if self.__fetching.has_key(path): self.__fetching[path] = False #Fix for failed multi-load? |
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114 else: |
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115 logger.general("Image refused to load or URI did not reference a valid image: " + path) ##logger.general |
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116 del self.__fetching[path] |
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117 except IOError: |
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118 del self.__fetching[path] |
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119 logger.general("Unable to resolve/open the specified URI; image was NOT laoded: " + path) ##logger.general |
20 | 120 finally: self.__lock.release() |
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121 |
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122 def __loadCacheThread(self, path, image_type, imageId): |
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123 if self.__cache.has_key(path): |
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124 try: |
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125 st = time.time() |
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126 while self.__fetching.has_key(path) and self.__fetching[path] is not False: |
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127 time.sleep(0.025) |
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128 if (time.time()-st) > 120: |
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129 logger.general("Timeout: " + path) |
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130 break |
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131 except: |
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132 del self.__fetching[path] |
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133 logger.general("Unable to resolve/open the specified URI; image was NOT loaded: " + path) ##logger.general |
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134 return |
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135 self.__lock.acquire() |
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136 try: |
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137 logger.debug("Adding Image to Queue from Cache: " + str(self.__cache[path])) |
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138 self.__queue.put((self.__cache[path], image_type, imageId)) |
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139 finally: self.__lock.release() |
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140 |
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141 """Property Methods""" |
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142 def _getCache(self): |
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143 return self.__cache |
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144 |
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145 def _getQueue(self): |
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146 return self.__queue |
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147 |
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148 """Properties""" |
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149 Cache = property(_getCache) |
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150 Queue = property(_getQueue) |
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151 |
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152 ImageHandler = singleton(ImageHandlerClass) |