forked from openlp/openlp
163 lines
7.3 KiB
Python
163 lines
7.3 KiB
Python
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
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###############################################################################
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# OpenLP - Open Source Lyrics Projection #
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# --------------------------------------------------------------------------- #
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# Copyright (c) 2008-2014 Raoul Snyman #
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# Portions copyright (c) 2008-2014 Tim Bentley, Gerald Britton, Jonathan #
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# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub, #
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# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer. #
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# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru, #
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# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, #
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# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock, #
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# Frode Woldsund, Martin Zibricky, Patrick Zimmermann #
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# --------------------------------------------------------------------------- #
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# This program is free software; you can redistribute it and/or modify it #
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# under the terms of the GNU General Public License as published by the Free #
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# Software Foundation; version 2 of the License. #
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# #
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# This program is distributed in the hope that it will be useful, but WITHOUT #
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
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# more details. #
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# #
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# You should have received a copy of the GNU General Public License along #
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# with this program; if not, write to the Free Software Foundation, Inc., 59 #
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# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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###############################################################################
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"""
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The :mod:`listpreviewwidget` is a widget that lists the slides in the slide controller.
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It is based on a QTableWidget but represents its contents in list form.
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"""
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from PyQt4 import QtCore, QtGui
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from openlp.core.common import RegistryProperties
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from openlp.core.lib import ImageSource, ServiceItem
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class ListPreviewWidget(QtGui.QTableWidget, RegistryProperties):
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def __init__(self, parent, screen_ratio):
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"""
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Initializes the widget to default state.
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An empty ServiceItem is used per default.
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One needs to call replace_service_manager_item() to make this widget display something.
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"""
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super(QtGui.QTableWidget, self).__init__(parent)
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# Set up the widget.
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self.setColumnCount(1)
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self.horizontalHeader().setVisible(False)
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self.setColumnWidth(0, parent.width())
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self.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
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self.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
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self.setEditTriggers(QtGui.QAbstractItemView.NoEditTriggers)
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self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
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self.setAlternatingRowColors(True)
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# Initialize variables.
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self.service_item = ServiceItem()
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self.screen_ratio = screen_ratio
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def resizeEvent(self, QResizeEvent):
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"""
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Overloaded method from QTableWidget. Will recalculate the layout.
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"""
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self.__recalculate_layout()
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def __recalculate_layout(self):
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"""
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Recalculates the layout of the table widget. It will set height and width
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of the table cells. QTableWidget does not adapt the cells to the widget size on its own.
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"""
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self.setColumnWidth(0, self.viewport().width())
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if self.service_item:
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# Sort out songs, bibles, etc.
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if self.service_item.is_text():
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self.resizeRowsToContents()
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else:
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# Sort out image heights.
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for frame_number in range(len(self.service_item.get_frames())):
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height = self.viewport().width() // self.screen_ratio
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self.setRowHeight(frame_number, height)
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def screen_size_changed(self, screen_ratio):
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"""
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To be called whenever the live screen size changes.
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Because this makes a layout recalculation necessary.
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"""
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self.screen_ratio = screen_ratio
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self.__recalculate_layout()
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def replace_service_item(self, service_item, width, slide_number):
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"""
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Replaces the current preview items with the ones in service_item.
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Displays the given slide.
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"""
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self.service_item = service_item
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self.clear()
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self.setRowCount(0)
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self.setColumnWidth(0, width)
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row = 0
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text = []
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for frame_number, frame in enumerate(self.service_item.get_frames()):
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self.setRowCount(self.slide_count() + 1)
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item = QtGui.QTableWidgetItem()
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slide_height = 0
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if self.service_item.is_text():
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if frame['verseTag']:
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# These tags are already translated.
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verse_def = frame['verseTag']
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verse_def = '%s%s' % (verse_def[0], verse_def[1:])
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two_line_def = '%s\n%s' % (verse_def[0], verse_def[1:])
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row = two_line_def
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else:
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row += 1
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item.setText(frame['text'])
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else:
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label = QtGui.QLabel()
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label.setMargin(4)
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if self.service_item.is_media():
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label.setAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)
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else:
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label.setScaledContents(True)
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if self.service_item.is_command():
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label.setPixmap(QtGui.QPixmap(frame['image']))
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else:
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image = self.image_manager.get_image(frame['path'], ImageSource.ImagePlugin)
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label.setPixmap(QtGui.QPixmap.fromImage(image))
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self.setCellWidget(frame_number, 0, label)
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slide_height = width // self.screen_ratio
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row += 1
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text.append(str(row))
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self.setItem(frame_number, 0, item)
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if slide_height:
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self.setRowHeight(frame_number, slide_height)
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self.setVerticalHeaderLabels(text)
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if self.service_item.is_text():
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self.resizeRowsToContents()
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self.setColumnWidth(0, self.viewport().width())
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self.setFocus()
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self.change_slide(slide_number)
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def change_slide(self, slide):
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"""
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Switches to the given row.
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"""
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if slide >= self.slide_count():
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slide = self.slide_count() - 1
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# Scroll to next item if possible.
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if slide + 1 < self.slide_count():
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self.scrollToItem(self.item(slide + 1, 0))
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self.selectRow(slide)
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def current_slide_number(self):
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"""
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Returns the position of the currently active item. Will return -1 if the widget is empty.
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"""
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return super(ListPreviewWidget, self).currentRow()
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def slide_count(self):
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"""
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Returns the number of slides this widget holds.
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"""
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return super(ListPreviewWidget, self).rowCount() |