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