forked from openlp/openlp
116 lines
4.2 KiB
Python
116 lines
4.2 KiB
Python
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
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"""
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OpenLP - Open Source Lyrics Projection
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Copyright (c) 2008 Raoul Snyman
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Portions copyright (c) 2008-2009 Martin Thompson, Tim Bentley
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is diunicodeibuted in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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import os
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import logging
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from PyQt4 import QtCore, QtGui
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class ListWithPreviews(QtCore.QAbstractListModel):
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"""
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An abstract list of unicodeings and the preview icon to go with them
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"""
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global log
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log = logging.getLogger(u'ListWithPreviews')
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log.info(u'started')
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def __init__(self, new_preview_function=None):
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QtCore.QAbstractListModel.__init__(self)
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# will be a list of (full filename, QPixmap, shortname) tuples
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self.items = []
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self.rowheight = 50
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self.maximagewidth = self.rowheight * 16 / 9.0;
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self.preview_function = new_preview_function
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def make_preview(self, filename):
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if os.path.exists(filename):
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if self.preview_function is not None:
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preview=self.preview_function(filename)
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else:
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preview = QtGui.QImage(filename)
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else:
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preview = None
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if preview is not None:
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w = self.maximagewidth;
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h = self.rowheight
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preview = preview.scaled(w, h, QtCore.Qt.KeepAspectRatio, QtCore.Qt.SmoothTransformation)
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realw = preview.width();
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realh = preview.height()
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# and move it to the centre of the preview space
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p = QtGui.QImage(w, h, QtGui.QImage.Format_ARGB32_Premultiplied)
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p.fill(QtCore.Qt.transparent)
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painter = QtGui.QPainter(p)
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painter.drawImage((w-realw) / 2 , (h-realh) / 2, preview)
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else:
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w = self.maximagewidth;
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h = self.rowheight
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p = QtGui.QImage(w, h, QtGui.QImage.Format_ARGB32_Premultiplied)
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p.fill(QtCore.Qt.transparent)
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return p
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def rowCount(self, parent):
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return len(self.items)
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def insertRow(self, row, filename):
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self.beginInsertRows(QtCore.QModelIndex(), row, row)
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#log.info(u'insert row %d:%s' % (row,filename))
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# get short filename to display next to image
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filename = unicode(filename)
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(prefix, shortfilename) = os.path.split(filename)
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#log.info(u'shortfilename=%s' % (shortfilename))
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# create a preview image
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p=self.make_preview(filename)
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# finally create the row
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self.items.insert(row, (filename, p, shortfilename))
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self.endInsertRows()
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def removeRow(self, row):
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self.beginRemoveRows(QtCore.QModelIndex(), row, row)
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self.items.pop(row)
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self.endRemoveRows()
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def addRow(self, filename):
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self.insertRow(len(self.items), filename)
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def data(self, index, role):
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row = index.row()
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if row > len(self.items):
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# if the last row is selected and deleted, we then get called with an empty row!
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return QtCore.QVariant()
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if role == QtCore.Qt.DisplayRole:
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retval = self.items[row][2]
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elif role == QtCore.Qt.DecorationRole:
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retval = self.items[row][1]
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elif role == QtCore.Qt.ToolTipRole:
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retval = self.items[row][0]
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else:
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retval = QtCore.QVariant()
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if type(retval) is not type(QtCore.QVariant):
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return QtCore.QVariant(retval)
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else:
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return retval
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def getFileList(self):
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filelist = [item[0] for item in self.items];
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return filelist
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def getFilename(self, index):
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row = index.row()
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return self.items[row][0]
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