Mercurial Repositories > eric / file comparison
comparison: UI/PixmapCache.py
UI/PixmapCache.py
- changeset 0
- de9c2efb9d02
- child 13
- 1af94a91f439
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2004 - 2009 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a pixmap cache for icons. | |
| 8 """ | |
| 9 | |
| 10 import os | |
| 11 | |
| 12 from PyQt4.QtGui import QPixmap, QIcon | |
| 13 | |
| 14 class PixmapCache(object): | |
| 15 """ | |
| 16 Class implementing a pixmap cache for icons. | |
| 17 """ | |
| 18 def __init__(self): | |
| 19 """ | |
| 20 Constructor | |
| 21 """ | |
| 22 self.pixmapCache = {} | |
| 23 self.searchPath = [] | |
| 24 | |
| 25 def getPixmap(self, key): | |
| 26 """ | |
| 27 Public method to retrieve a pixmap. | |
| 28 | |
| 29 @param key name of the wanted pixmap (string) | |
| 30 @return the requested pixmap (QPixmap) | |
| 31 """ | |
| 32 if key: | |
| 33 try: | |
| 34 return self.pixmapCache[key] | |
| 35 except KeyError: | |
| 36 if not os.path.isabs(key): | |
| 37 for path in self.searchPath: | |
| 38 pm = QPixmap(path + "/" + key) | |
| 39 if not pm.isNull(): | |
| 40 break | |
| 41 else: | |
| 42 pm = QPixmap() | |
| 43 else: | |
| 44 pm = QPixmap(key) | |
| 45 self.pixmapCache[key] = pm | |
| 46 return self.pixmapCache[key] | |
| 47 return QPixmap() | |
| 48 | |
| 49 def addSearchPath(self, path): | |
| 50 """ | |
| 51 Public method to add a path to the search path. | |
| 52 | |
| 53 @param path path to add (string) | |
| 54 """ | |
| 55 if not path in self.searchPath: | |
| 56 self.searchPath.append(path) | |
| 57 | |
| 58 pixCache = PixmapCache() | |
| 59 | |
| 60 def getPixmap(key, cache = pixCache): | |
| 61 """ | |
| 62 Module function to retrieve a pixmap. | |
| 63 | |
| 64 @param key name of the wanted pixmap (string) | |
| 65 @return the requested pixmap (QPixmap) | |
| 66 """ | |
| 67 return cache.getPixmap(key) | |
| 68 | |
| 69 def getIcon(key, cache = pixCache): | |
| 70 """ | |
| 71 Module function to retrieve an icon. | |
| 72 | |
| 73 @param key name of the wanted icon (string) | |
| 74 @return the requested icon (QIcon) | |
| 75 """ | |
| 76 return QIcon(cache.getPixmap(key)) | |
| 77 | |
| 78 def addSearchPath(path, cache = pixCache): | |
| 79 """ | |
| 80 Module function to add a path to the search path. | |
| 81 | |
| 82 @param path path to add (string) | |
| 83 """ | |
| 84 cache.addSearchPath(path) |
