eric6/UI/PixmapCache.py

Sat, 27 Feb 2021 12:08:23 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 27 Feb 2021 12:08:23 +0100
changeset 8138
169e65a6787c
parent 7923
91e843545d9a
child 8143
2c730d5fd177
permissions
-rw-r--r--

Shell: added functionality to show a prompt when the main client process has exited (e.g. a script ended).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2004 - 2021 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing a pixmap cache for icons.
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8 """
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9
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10 import os
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11
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12 from PyQt5.QtCore import Qt, QSize
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13 from PyQt5.QtGui import QPixmap, QIcon, QPainter
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14
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15
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16 class PixmapCache(object):
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17 """
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18 Class implementing a pixmap cache for icons.
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19 """
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parents: 6645
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20 SupportedExtensions = [".svgz", ".svg", ".png"]
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parents: 6645
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21
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22 def __init__(self):
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23 """
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24 Constructor
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25 """
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26 self.pixmapCache = {}
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27 self.searchPath = []
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28
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29 def getPixmap(self, key, size=None):
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30 """
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31 Public method to retrieve a pixmap.
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32
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33 @param key name of the wanted pixmap
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parents: 6645
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34 @type str
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35 @param size requested size
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parents: 6645
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36 @type QSize
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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37 @return the requested pixmap
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38 @rtype QPixmap
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39 """
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40 if key:
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41 basename, ext = os.path.splitext(key)
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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parents: 6645
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42 if size and not size.isEmpty():
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3de088ae0782 PixmapCache: fixed a format issue generating the pixmap key when a size was given.
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43 key = "{0}_{1}_{2}".format(
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44 basename, size.width(), size.height())
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parents: 6645
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45 else:
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46 key = basename
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47
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48 try:
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49 return self.pixmapCache[key]
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50 except KeyError:
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51 pm = QPixmap()
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52 for extension in self.SupportedExtensions:
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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53 filename = basename + extension
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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54 if not os.path.isabs(filename):
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55 for path in self.searchPath:
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56 pm = QPixmap(path + "/" + filename)
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57 if not pm.isNull():
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58 break
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59 else:
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60 pm = QPixmap(filename)
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61 if not pm.isNull():
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62 if size and not size.isEmpty():
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63 pm = pm.scaled(size)
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64 break
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65 else:
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66 pm = QPixmap()
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67
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68 self.pixmapCache[key] = pm
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69 return self.pixmapCache[key]
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70
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71 return QPixmap()
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72
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73 def addSearchPath(self, path):
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74 """
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75 Public method to add a path to the search path.
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76
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77 @param path path to add
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78 @type str
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79 """
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80 if path not in self.searchPath:
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81 self.searchPath.append(path)
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82
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83 def removeSearchPath(self, path):
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84 """
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85 Public method to remove a path from the search path.
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86
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87 @param path path to remove
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88 @type str
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parents: 7360
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89 """
36ec7469f492 PixmapCache: added a method to remove a path from the pixmap search path.
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parents: 7360
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90 if path in self.searchPath:
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91 self.searchPath.remove(path)
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92
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93 pixCache = PixmapCache()
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94
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95
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96 def getPixmap(key, size=None, cache=pixCache):
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97 """
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98 Module function to retrieve a pixmap.
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99
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100 @param key name of the wanted pixmap
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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101 @type str
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102 @param size requested size
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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103 @type QSize
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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104 @param cache reference to the pixmap cache object
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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105 @type PixmapCache
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106 @return the requested pixmap
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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107 @rtype QPixmap
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108 """
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109 return cache.getPixmap(key, size=size)
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110
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parents: 791
diff changeset
111
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
diff changeset
112 def getIcon(key, size=None, cache=pixCache):
0
de9c2efb9d02 Started porting eric4 to Python3
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parents:
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113 """
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
114 Module function to retrieve an icon.
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parents:
diff changeset
115
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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116 @param key name of the wanted pixmap
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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117 @type str
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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118 @param size requested size
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
diff changeset
119 @type QSize
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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120 @param cache reference to the pixmap cache object
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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121 @type PixmapCache
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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122 @return the requested icon
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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123 @rtype QIcon
0
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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124 """
6756
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parents: 6645
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125 return QIcon(cache.getPixmap(key, size=size))
0
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126
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127
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parents: 6645
diff changeset
128 def getSymlinkIcon(key, size=None, cache=pixCache):
103
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
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129 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
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130 Module function to retrieve a symbolic link icon.
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131
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132 @param key name of the wanted pixmap
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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133 @type str
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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134 @param size requested size
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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135 @type QSize
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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136 @param cache reference to the pixmap cache object
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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137 @type PixmapCache
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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138 @return the requested icon
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
diff changeset
139 @rtype QIcon
103
59137afca666 Added code to indicate directories and files being symbolic links.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
140 """
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parents: 6645
diff changeset
141 pix1 = QPixmap(cache.getPixmap(key, size=size))
7533
88261c96484b Removed the '.png' extension from all call to get an icon or a pixmap from the PixmapCache because this is not needed anymore.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7488
diff changeset
142 pix2 = cache.getPixmap("symlink")
103
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
143 painter = QPainter(pix1)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
144 painter.drawPixmap(0, 10, pix2)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
145 painter.end()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
146 return QIcon(pix1)
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diff changeset
147
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148
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149 def getCombinedIcon(keys, size=None, cache=pixCache):
3270
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150 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 3160
diff changeset
151 Module function to retrieve a symbolic link icon.
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152
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153 @param keys list of names of icons
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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154 @type list of str
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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155 @param size requested size of individual icons
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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156 @type QSize
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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157 @param cache reference to the pixmap cache object
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6645
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158 @type PixmapCache
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
Detlev Offenbach <detlev@die-offenbachs.de>
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159 @return the requested icon
7556c951dce8 PixmapCache: prepared the pixmap cache to be able to load SVG files. Order of precedence is .svgz, .svg and .png. The key is calculated from the basename and the size.
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160 @rtype QIcon
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161 """
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diff changeset
162 height = width = 0
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Detlev Offenbach <detlev@die-offenbachs.de>
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163 pixmaps = []
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164 for key in keys:
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165 pix = cache.getPixmap(key, size=size)
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166 if not pix.isNull():
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167 height = max(height, pix.height())
d8532d902e76 Extended Tabview and Listview to show an editor's state using two icons (modified, syntax error/warning).
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168 width = max(width, pix.width())
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diff changeset
169 pixmaps.append(pix)
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diff changeset
170 if pixmaps:
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171 pix = QPixmap(len(pixmaps) * width, height)
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diff changeset
172 pix.fill(Qt.transparent)
d8532d902e76 Extended Tabview and Listview to show an editor's state using two icons (modified, syntax error/warning).
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173 painter = QPainter(pix)
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174 x = 0
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 3160
diff changeset
175 for pixmap in pixmaps:
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parents: 3160
diff changeset
176 painter.drawPixmap(x, 0, pixmap.scaled(QSize(width, height)))
d8532d902e76 Extended Tabview and Listview to show an editor's state using two icons (modified, syntax error/warning).
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diff changeset
177 x += width
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diff changeset
178 painter.end()
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diff changeset
179 icon = QIcon(pix)
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diff changeset
180 else:
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diff changeset
181 icon = QIcon()
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182 return icon
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183
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184
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Detlev Offenbach <detlev@die-offenbachs.de>
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185 def addSearchPath(path, cache=pixCache):
0
de9c2efb9d02 Started porting eric4 to Python3
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parents:
diff changeset
186 """
de9c2efb9d02 Started porting eric4 to Python3
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parents:
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187 Module function to add a path to the search path.
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188
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189 @param path path to add
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190 @type str
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191 @param cache reference to the pixmap cache object
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192 @type PixmapCache
0
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193 """
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parents:
diff changeset
194 cache.addSearchPath(path)
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195
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Detlev Offenbach <detlev@die-offenbachs.de>
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196
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
197 def removeSearchPath(path, cache=pixCache):
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198 """
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
199 Public method to remove a path from the search path.
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
200
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
201 @param path path to remove
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
202 @type str
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
203 @param cache reference to the pixmap cache object
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diff changeset
204 @type PixmapCache
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
205 """
36ec7469f492 PixmapCache: added a method to remove a path from the pixmap search path.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7360
diff changeset
206 cache.removeSearchPath(path)

eric ide

mercurial