# -*- coding: utf-8 -*- # vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4 ############################################################################### # OpenLP - Open Source Lyrics Projection # # --------------------------------------------------------------------------- # # Copyright (c) 2008-2014 Raoul Snyman # # Portions copyright (c) 2008-2014 Tim Bentley, Gerald Britton, Jonathan # # Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub, # # Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer. # # Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru, # # Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, # # Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock, # # Frode Woldsund, Martin Zibricky, Patrick Zimmermann # # --------------------------------------------------------------------------- # # 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 distributed 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 # ############################################################################### """ The :mod:`listpreviewwidget` is a widget that lists the slides in the slide controller. It is based on a QTableWidget but represents its contents in list form. """ from PyQt4 import QtCore, QtGui from openlp.core.common import RegistryProperties from openlp.core.lib import ImageSource, ServiceItem class ListPreviewWidget(QtGui.QTableWidget, RegistryProperties): def __init__(self, parent, screen_ratio): """ Initializes the widget to default state. An empty ServiceItem is used per default. One needs to call replace_service_manager_item() to make this widget display something. """ super(QtGui.QTableWidget, self).__init__(parent) # Set up the widget. self.setColumnCount(1) self.horizontalHeader().setVisible(False) self.setColumnWidth(0, parent.width()) self.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows) self.setSelectionMode(QtGui.QAbstractItemView.SingleSelection) self.setEditTriggers(QtGui.QAbstractItemView.NoEditTriggers) self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff) self.setAlternatingRowColors(True) # Initialize variables. self.service_item = ServiceItem() self.screen_ratio = screen_ratio def resizeEvent(self, QResizeEvent): """ Overloaded method from QTableWidget. Will recalculate the layout. """ self.__recalculate_layout() def __recalculate_layout(self): """ Recalculates the layout of the table widget. It will set height and width of the table cells. QTableWidget does not adapt the cells to the widget size on its own. """ self.setColumnWidth(0, self.viewport().width()) if self.service_item: # Sort out songs, bibles, etc. if self.service_item.is_text(): self.resizeRowsToContents() else: # Sort out image heights. for frame_number in range(len(self.service_item.get_frames())): height = self.viewport().width() // self.screen_ratio self.setRowHeight(frame_number, height) def screen_size_changed(self, screen_ratio): """ To be called whenever the live screen size changes. Because this makes a layout recalculation necessary. """ self.screen_ratio = screen_ratio self.__recalculate_layout() def replace_service_item(self, service_item, width, slide_number): """ Replaces the current preview items with the ones in service_item. Displays the given slide. """ self.service_item = service_item self.setRowCount(0) self.clear() self.setColumnWidth(0, width) row = 0 text = [] for frame_number, frame in enumerate(self.service_item.get_frames()): self.setRowCount(self.slide_count() + 1) item = QtGui.QTableWidgetItem() slide_height = 0 if self.service_item.is_text(): if frame['verseTag']: # These tags are already translated. verse_def = frame['verseTag'] verse_def = '%s%s' % (verse_def[0], verse_def[1:]) two_line_def = '%s\n%s' % (verse_def[0], verse_def[1:]) row = two_line_def else: row += 1 item.setText(frame['text']) else: label = QtGui.QLabel() label.setMargin(4) if self.service_item.is_media(): label.setAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter) else: label.setScaledContents(True) if self.service_item.is_command(): label.setPixmap(QtGui.QPixmap(frame['image'])) else: image = self.image_manager.get_image(frame['path'], ImageSource.ImagePlugin) label.setPixmap(QtGui.QPixmap.fromImage(image)) self.setCellWidget(frame_number, 0, label) slide_height = width // self.screen_ratio row += 1 text.append(str(row)) self.setItem(frame_number, 0, item) if slide_height: self.setRowHeight(frame_number, slide_height) self.setVerticalHeaderLabels(text) if self.service_item.is_text(): self.resizeRowsToContents() self.setColumnWidth(0, self.viewport().width()) self.change_slide(slide_number) def change_slide(self, slide): """ Switches to the given row. """ if slide >= self.slide_count(): slide = self.slide_count() - 1 # Scroll to next item if possible. if slide + 1 < self.slide_count(): self.scrollToItem(self.item(slide + 1, 0)) self.selectRow(slide) def current_slide_number(self): """ Returns the position of the currently active item. Will return -1 if the widget is empty. """ return super(ListPreviewWidget, self).currentRow() def slide_count(self): """ Returns the number of slides this widget holds. """ return super(ListPreviewWidget, self).rowCount()