--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/UI/PixmapCache.py Sun Apr 14 15:09:21 2019 +0200
@@ -0,0 +1,183 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2004 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a pixmap cache for icons.
+"""
+
+from __future__ import unicode_literals
+
+import os
+
+from PyQt5.QtCore import Qt, QSize
+from PyQt5.QtGui import QPixmap, QIcon, QPainter
+
+
+class PixmapCache(object):
+ """
+ Class implementing a pixmap cache for icons.
+ """
+ SupportedExtensions = [".svgz", ".svg", ".png"]
+
+ def __init__(self):
+ """
+ Constructor
+ """
+ self.pixmapCache = {}
+ self.searchPath = []
+
+ def getPixmap(self, key, size=None):
+ """
+ Public method to retrieve a pixmap.
+
+ @param key name of the wanted pixmap
+ @type str
+ @param size requested size
+ @type QSize
+ @return the requested pixmap
+ @rtype QPixmap
+ """
+ if key:
+ basename, ext = os.path.splitext(key)
+ if size and not size.isEmpty():
+ key = "{0}_{1}_{2}".format(
+ basename, size.width(), size.height())
+ else:
+ key = basename
+
+ try:
+ return self.pixmapCache[key]
+ except KeyError:
+ pm = QPixmap()
+ for extension in self.SupportedExtensions:
+ filename = basename + extension
+ if not os.path.isabs(filename):
+ for path in self.searchPath:
+ pm = QPixmap(path + "/" + filename)
+ if not pm.isNull():
+ break
+ else:
+ pm = QPixmap(filename)
+ if not pm.isNull():
+ if size and not size.isEmpty():
+ pm = pm.scaled(size)
+ break
+ else:
+ pm = QPixmap()
+
+ self.pixmapCache[key] = pm
+ return self.pixmapCache[key]
+
+ return QPixmap()
+
+ def addSearchPath(self, path):
+ """
+ Public method to add a path to the search path.
+
+ @param path path to add (string)
+ """
+ if path not in self.searchPath:
+ self.searchPath.append(path)
+
+pixCache = PixmapCache()
+
+
+def getPixmap(key, size=None, cache=pixCache):
+ """
+ Module function to retrieve a pixmap.
+
+ @param key name of the wanted pixmap
+ @type str
+ @param size requested size
+ @type QSize
+ @param cache reference to the pixmap cache object
+ @type PixmapCache
+ @return the requested pixmap
+ @rtype QPixmap
+ """
+ return cache.getPixmap(key, size=size)
+
+
+def getIcon(key, size=None, cache=pixCache):
+ """
+ Module function to retrieve an icon.
+
+ @param key name of the wanted pixmap
+ @type str
+ @param size requested size
+ @type QSize
+ @param cache reference to the pixmap cache object
+ @type PixmapCache
+ @return the requested icon
+ @rtype QIcon
+ """
+ return QIcon(cache.getPixmap(key, size=size))
+
+
+def getSymlinkIcon(key, size=None, cache=pixCache):
+ """
+ Module function to retrieve a symbolic link icon.
+
+ @param key name of the wanted pixmap
+ @type str
+ @param size requested size
+ @type QSize
+ @param cache reference to the pixmap cache object
+ @type PixmapCache
+ @return the requested icon
+ @rtype QIcon
+ """
+ pix1 = QPixmap(cache.getPixmap(key, size=size))
+ pix2 = cache.getPixmap("symlink.png")
+ painter = QPainter(pix1)
+ painter.drawPixmap(0, 10, pix2)
+ painter.end()
+ return QIcon(pix1)
+
+
+def getCombinedIcon(keys, size=None, cache=pixCache):
+ """
+ Module function to retrieve a symbolic link icon.
+
+ @param keys list of names of icons
+ @type list of str
+ @param size requested size of individual icons
+ @type QSize
+ @param cache reference to the pixmap cache object
+ @type PixmapCache
+ @return the requested icon
+ @rtype QIcon
+ """
+ height = width = 0
+ pixmaps = []
+ for key in keys:
+ pix = cache.getPixmap(key, size=size)
+ if not pix.isNull():
+ height = max(height, pix.height())
+ width = max(width, pix.width())
+ pixmaps.append(pix)
+ if pixmaps:
+ pix = QPixmap(len(pixmaps) * width, height)
+ pix.fill(Qt.transparent)
+ painter = QPainter(pix)
+ x = 0
+ for pixmap in pixmaps:
+ painter.drawPixmap(x, 0, pixmap.scaled(QSize(width, height)))
+ x += width
+ painter.end()
+ icon = QIcon(pix)
+ else:
+ icon = QIcon()
+ return icon
+
+
+def addSearchPath(path, cache=pixCache):
+ """
+ Module function to add a path to the search path.
+
+ @param path path to add (string)
+ @param cache reference to the pixmap cache object (PixmapCache)
+ """
+ cache.addSearchPath(path)
