forked from openlp/openlp
543 lines
22 KiB
Python
543 lines
22 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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# --------------------------------------------------------------------------- #
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# Copyright (c) 2008-2010 Raoul Snyman #
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# Portions copyright (c) 2008-2010 Tim Bentley, Jonathan Corwin, Michael #
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# Gorven, Scott Guerrieri, Meinert Jordan, Andreas Preikschat, Christian #
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# Richter, Philip Ridout, Maikel Stuivenberg, Martin Thompson, Jon Tibble, #
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# Carsten Tinggaard, Frode Woldsund #
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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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Provides the generic functions for interfacing plugins with the Media Manager.
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"""
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import logging
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import os
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from PyQt4 import QtCore, QtGui
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from openlp.core.lib import context_menu_action, context_menu_separator, \
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SettingsManager, OpenLPToolbar, ServiceItem, build_icon, translate
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log = logging.getLogger(__name__)
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class MediaManagerItem(QtGui.QWidget):
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"""
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MediaManagerItem is a helper widget for plugins.
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None of the following *need* to be used, feel free to override
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them completely in your plugin's implementation. Alternatively,
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call them from your plugin before or after you've done extra
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things that you need to.
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**Constructor Parameters**
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``parent``
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The parent widget. Usually this will be the *Media Manager*
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itself. This needs to be a class descended from ``QWidget``.
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``icon``
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Either a ``QIcon``, a resource path, or a file name. This is
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the icon which is displayed in the *Media Manager*.
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``title``
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The title visible on the item in the *Media Manager*.
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**Member Variables**
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When creating a descendant class from this class for your plugin,
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the following member variables should be set.
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``self.PluginNameShort``
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The shortened (usually singular) name for the plugin e.g. *'Song'*
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for the Songs plugin.
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``self.pluginNameVisible``
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The user visible name for a plugin which should use a suitable
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translation function.
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``self.OnNewPrompt``
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Defaults to *'Select Image(s)'*.
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``self.OnNewFileMasks``
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Defaults to *'Images (*.jpg *jpeg *.gif *.png *.bmp)'*. This
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assumes that the new action is to load a file. If not, you
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need to override the ``OnNew`` method.
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``self.ListViewWithDnD_class``
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This must be a **class**, not an object, descended from
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``openlp.core.lib.BaseListWithDnD`` that is not used in any
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other part of OpenLP.
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``self.PreviewFunction``
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This must be a method which returns a QImage to represent the
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item (usually a preview). No scaling is required, that is
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performed automatically by OpenLP when necessary. If this
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method is not defined, a default will be used (treat the
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filename as an image).
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"""
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log.info(u'Media Item loaded')
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def __init__(self, parent=None, icon=None, title=None):
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"""
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Constructor to create the media manager item.
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"""
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QtGui.QWidget.__init__(self)
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self.parent = parent
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self.settingsSection = title.lower()
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if isinstance(icon, QtGui.QIcon):
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self.icon = icon
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elif isinstance(icon, basestring):
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self.icon.addPixmap(QtGui.QPixmap.fromImage(QtGui.QImage(icon)),
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QtGui.QIcon.Normal, QtGui.QIcon.Off)
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else:
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self.icon = None
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if title:
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self.title = title
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self.toolbar = None
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self.remoteTriggered = None
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self.serviceItemIconName = None
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self.singleServiceItem = True
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self.pageLayout = QtGui.QVBoxLayout(self)
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self.pageLayout.setSpacing(0)
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self.pageLayout.setContentsMargins(4, 0, 4, 0)
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self.requiredIcons()
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self.setupUi()
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self.retranslateUi()
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def requiredIcons(self):
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"""
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This method is called to define the icons for the plugin.
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It provides a default set and the plugin is able to override
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the if required.
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"""
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self.hasImportIcon = False
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self.hasNewIcon = True
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self.hasEditIcon = True
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self.hasFileIcon = False
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self.hasDeleteIcon = True
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self.addToServiceItem = False
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def retranslateUi(self):
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"""
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This method is called automatically to provide OpenLP with the
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opportunity to translate the ``MediaManagerItem`` to another
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language.
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"""
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pass
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def addToolbar(self):
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"""
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A method to help developers easily add a toolbar to the media
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manager item.
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"""
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if self.toolbar is None:
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self.toolbar = OpenLPToolbar(self)
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self.pageLayout.addWidget(self.toolbar)
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def addToolbarButton(
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self, title, tooltip, icon, slot=None, checkable=False):
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"""
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A method to help developers easily add a button to the toolbar.
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``title``
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The title of the button.
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``tooltip``
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The tooltip to be displayed when the mouse hovers over the
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button.
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``icon``
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The icon of the button. This can be an instance of QIcon, or a
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string cotaining either the absolute path to the image, or an
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internal resource path starting with ':/'.
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``slot``
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The method to call when the button is clicked.
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``objectname``
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The name of the button.
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"""
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# NB different order (when I broke this out, I didn't want to
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# break compatability), but it makes sense for the icon to
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# come before the tooltip (as you have to have an icon, but
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# not neccesarily a tooltip)
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self.toolbar.addToolbarButton(title, icon, tooltip, slot, checkable)
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def addToolbarSeparator(self):
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"""
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A very simple method to add a separator to the toolbar.
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"""
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self.toolbar.addSeparator()
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def setupUi(self):
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"""
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This method sets up the interface on the button. Plugin
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developers use this to add and create toolbars, and the rest
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of the interface of the media manager item.
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"""
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# Add a toolbar
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self.addToolbar()
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#Allow the plugin to define buttons at start of bar
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self.addStartHeaderBar()
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#Add the middle of the tool bar (pre defined)
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self.addMiddleHeaderBar()
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#Allow the plugin to define buttons at end of bar
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self.addEndHeaderBar()
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#Add the list view
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self.addListViewToToolBar()
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def addMiddleHeaderBar(self):
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"""
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Create buttons for the media item toolbar
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"""
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## Import Button ##
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if self.hasImportIcon:
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self.addToolbarButton(
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unicode(translate('OpenLP.MediaManagerItem', 'Import %s')) %
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self.PluginNameShort,
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unicode(translate('OpenLP.MediaManagerItem', 'Import a %s')) %
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self.pluginNameVisible,
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u':/general/general_import.png', self.onImportClick)
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## File Button ##
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if self.hasFileIcon:
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self.addToolbarButton(
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unicode(translate('OpenLP.MediaManagerItem', 'Load %s')) %
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self.PluginNameShort,
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unicode(translate('OpenLP.MediaManagerItem', 'Load a new %s')) %
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self.pluginNameVisible,
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u':/general/general_open.png', self.onFileClick)
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## New Button ##
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if self.hasNewIcon:
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self.addToolbarButton(
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unicode(translate('OpenLP.MediaManagerItem', 'New %s')) %
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self.PluginNameShort,
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unicode(translate('OpenLP.MediaManagerItem', 'Add a new %s')) %
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self.pluginNameVisible,
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u':/general/general_new.png', self.onNewClick)
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## Edit Button ##
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if self.hasEditIcon:
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self.addToolbarButton(
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unicode(translate('OpenLP.MediaManagerItem', 'Edit %s')) %
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self.PluginNameShort,
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unicode(translate(
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'OpenLP.MediaManagerItem', 'Edit the selected %s')) %
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self.pluginNameVisible,
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u':/general/general_edit.png', self.onEditClick)
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## Delete Button ##
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if self.hasDeleteIcon:
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self.addToolbarButton(
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unicode(translate('OpenLP.MediaManagerItem', 'Delete %s')) %
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self.PluginNameShort,
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translate('OpenLP.MediaManagerItem',
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'Delete the selected item'),
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u':/general/general_delete.png', self.onDeleteClick)
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## Separator Line ##
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self.addToolbarSeparator()
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## Preview ##
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self.addToolbarButton(
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unicode(translate('OpenLP.MediaManagerItem', 'Preview %s')) %
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self.PluginNameShort,
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translate('OpenLP.MediaManagerItem', 'Preview the selected item'),
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u':/general/general_preview.png', self.onPreviewClick)
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## Live Button ##
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self.addToolbarButton(
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u'Go Live',
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translate('OpenLP.MediaManagerItem', 'Send the selected item live'),
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u':/general/general_live.png', self.onLiveClick)
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## Add to service Button ##
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self.addToolbarButton(
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unicode(translate('OpenLP.MediaManagerItem', 'Add %s to Service')) %
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self.PluginNameShort,
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translate('OpenLP.MediaManagerItem',
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'Add the selected item(s) to the service'),
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u':/general/general_add.png', self.onAddClick)
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def addListViewToToolBar(self):
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"""
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Creates the main widget for listing items the media item is tracking
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"""
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#Add the List widget
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self.listView = self.ListViewWithDnD_class(self)
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self.listView.uniformItemSizes = True
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self.listView.setGeometry(QtCore.QRect(10, 100, 256, 591))
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self.listView.setSpacing(1)
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self.listView.setSelectionMode(
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QtGui.QAbstractItemView.ExtendedSelection)
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self.listView.setAlternatingRowColors(True)
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self.listView.setDragEnabled(True)
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self.listView.setObjectName(u'%sListView' % self.PluginNameShort)
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#Add to pageLayout
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self.pageLayout.addWidget(self.listView)
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#define and add the context menu
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self.listView.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)
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if self.hasEditIcon:
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self.listView.addAction(
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context_menu_action(
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self.listView, u':/general/general_edit.png',
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unicode(translate('OpenLP.MediaManagerItem', '&Edit %s')) %
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self.pluginNameVisible,
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self.onEditClick))
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self.listView.addAction(context_menu_separator(self.listView))
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if self.hasDeleteIcon:
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self.listView.addAction(
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context_menu_action(
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self.listView, u':/general/general_delete.png',
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unicode(translate('OpenLP.MediaManagerItem',
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'&Delete %s')) %
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self.pluginNameVisible,
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self.onDeleteClick))
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self.listView.addAction(context_menu_separator(self.listView))
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self.listView.addAction(
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context_menu_action(
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self.listView, u':/general/general_preview.png',
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unicode(translate('OpenLP.MediaManagerItem', '&Preview %s')) %
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self.pluginNameVisible,
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self.onPreviewClick))
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self.listView.addAction(
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context_menu_action(
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self.listView, u':/general/general_live.png',
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translate('OpenLP.MediaManagerItem', '&Show Live'),
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self.onLiveClick))
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self.listView.addAction(
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context_menu_action(
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self.listView, u':/general/general_add.png',
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translate('OpenLP.MediaManagerItem', '&Add to Service'),
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self.onAddClick))
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if self.addToServiceItem:
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self.listView.addAction(
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context_menu_action(
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self.listView, u':/general/general_add.png',
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translate('OpenLP.MediaManagerItem',
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'&Add to selected Service Item'),
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self.onAddEditClick))
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if QtCore.QSettings().value(u'advanced/double click live',
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QtCore.QVariant(False)).toBool():
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QtCore.QObject.connect(self.listView,
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QtCore.SIGNAL(u'doubleClicked(QModelIndex)'),
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self.onLiveClick)
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else:
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QtCore.QObject.connect(self.listView,
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QtCore.SIGNAL(u'doubleClicked(QModelIndex)'),
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self.onPreviewClick)
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def initialise(self):
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"""
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Implement this method in your descendent media manager item to
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do any UI or other initialisation. This method is called automatically.
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"""
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pass
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def addStartHeaderBar(self):
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"""
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Slot at start of toolbar for plugin to addwidgets
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"""
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pass
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def addEndHeaderBar(self):
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"""
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Slot at end of toolbar for plugin to add widgets
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"""
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pass
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def onFileClick(self):
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"""
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Add a file to the list widget to make it available for showing
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"""
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files = QtGui.QFileDialog.getOpenFileNames(
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self, self.OnNewPrompt,
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SettingsManager.get_last_dir(self.settingsSection),
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self.OnNewFileMasks)
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log.info(u'New files(s) %s', unicode(files))
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if files:
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self.loadList(files)
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lastDir = os.path.split(unicode(files[0]))[0]
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SettingsManager.set_last_dir(self.settingsSection, lastDir)
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SettingsManager.set_list(self.settingsSection,
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self.settingsSection, self.getFileList())
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def getFileList(self):
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"""
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Return the current list of files
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"""
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count = 0
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filelist = []
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while count < self.listView.count():
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bitem = self.listView.item(count)
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filename = unicode(bitem.data(QtCore.Qt.UserRole).toString())
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filelist.append(filename)
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count += 1
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return filelist
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def validate(self, file, thumb):
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"""
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Validates to see if the file still exists or thumbnail is up to date
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"""
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if not os.path.exists(file):
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return False
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if os.path.exists(thumb):
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filedate = os.stat(file).st_mtime
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thumbdate = os.stat(thumb).st_mtime
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#if file updated rebuild icon
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if filedate > thumbdate:
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self.iconFromFile(file, thumb)
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else:
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self.iconFromFile(file, thumb)
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return True
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def iconFromFile(self, file, thumb):
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"""
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Create a thumbnail icon from a given file
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``file``
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The file to create the icon from
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``thumb``
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The filename to save the thumbnail to
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"""
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icon = build_icon(unicode(file))
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pixmap = icon.pixmap(QtCore.QSize(88, 50))
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ext = os.path.splitext(thumb)[1].lower()
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pixmap.save(thumb, ext[1:])
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return icon
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def loadList(self, list):
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raise NotImplementedError(u'MediaManagerItem.loadList needs to be '
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u'defined by the plugin')
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def onNewClick(self):
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raise NotImplementedError(u'MediaManagerItem.onNewClick needs to be '
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u'defined by the plugin')
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def onEditClick(self):
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raise NotImplementedError(u'MediaManagerItem.onEditClick needs to be '
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u'defined by the plugin')
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def onDeleteClick(self):
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raise NotImplementedError(u'MediaManagerItem.onDeleteClick needs to '
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u'be defined by the plugin')
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def generateSlideData(self, service_item, item=None):
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raise NotImplementedError(u'MediaManagerItem.generateSlideData needs '
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u'to be defined by the plugin')
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def onPreviewClick(self):
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"""
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Preview an item by building a service item then adding that service
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item to the preview slide controller.
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"""
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if not self.listView.selectedIndexes() and not self.remoteTriggered:
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QtGui.QMessageBox.information(self,
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translate('OpenLP.MediaManagerItem', 'No Items Selected'),
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translate('OpenLP.MediaManagerItem',
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'You must select one or more items to preview.'))
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else:
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log.debug(self.PluginNameShort + u' Preview requested')
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service_item = self.buildServiceItem()
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if service_item:
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service_item.from_plugin = True
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self.parent.previewController.addServiceItem(service_item)
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def onLiveClick(self):
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"""
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Send an item live by building a service item then adding that service
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item to the live slide controller.
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"""
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if not self.listView.selectedIndexes():
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QtGui.QMessageBox.information(self,
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translate('OpenLP.MediaManagerItem', 'No Items Selected'),
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translate('OpenLP.MediaManagerItem',
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'You must select one or more items to send live.'))
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else:
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log.debug(self.PluginNameShort + u' Live requested')
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service_item = self.buildServiceItem()
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if service_item:
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service_item.from_plugin = True
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self.parent.liveController.addServiceItem(service_item)
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def onAddClick(self):
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"""
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Add a selected item to the current service
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"""
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if not self.listView.selectedIndexes() and not self.remoteTriggered:
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QtGui.QMessageBox.information(self,
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translate('OpenLP.MediaManagerItem', 'No Items Selected'),
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translate('OpenLP.MediaManagerItem',
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'You must select one or more items.'))
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else:
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#Is it posssible to process multiple list items to generate multiple
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#service items?
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if self.singleServiceItem or self.remoteTriggered:
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log.debug(self.PluginNameShort + u' Add requested')
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service_item = self.buildServiceItem()
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if service_item:
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service_item.from_plugin = False
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self.parent.serviceManager.addServiceItem(service_item,
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replace=self.remoteTriggered)
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else:
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items = self.listView.selectedIndexes()
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for item in items:
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service_item = self.buildServiceItem(item)
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if service_item:
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service_item.from_plugin = False
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self.parent.serviceManager.addServiceItem(service_item)
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def onAddEditClick(self):
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"""
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Add a selected item to an existing item in the current service.
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"""
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if not self.listView.selectedIndexes() and not self.remoteTriggered:
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QtGui.QMessageBox.information(self,
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translate('OpenLP.MediaManagerItem', 'No items selected'),
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translate('OpenLP.MediaManagerItem',
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'You must select one or more items'))
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else:
|
|
log.debug(self.PluginNameShort + u' Add requested')
|
|
service_item = self.parent.serviceManager.getServiceItem()
|
|
if not service_item:
|
|
QtGui.QMessageBox.information(self,
|
|
translate('OpenLP.MediaManagerItem',
|
|
'No Service Item Selected'),
|
|
translate('OpenLP.MediaManagerItem',
|
|
'You must select an existing service item to add to.'))
|
|
elif self.title.lower() == service_item.name.lower():
|
|
self.generateSlideData(service_item)
|
|
self.parent.serviceManager.addServiceItem(service_item,
|
|
replace=True)
|
|
else:
|
|
#Turn off the remote edit update message indicator
|
|
QtGui.QMessageBox.information(self,
|
|
translate('OpenLP.MediaManagerItem',
|
|
'Invalid Service Item'),
|
|
unicode(translate('OpenLP.MediaManagerItem',
|
|
'You must select a %s service item.')) % self.title)
|
|
|
|
def buildServiceItem(self, item=None):
|
|
"""
|
|
Common method for generating a service item
|
|
"""
|
|
service_item = ServiceItem(self.parent)
|
|
if self.serviceItemIconName:
|
|
service_item.add_icon(self.serviceItemIconName)
|
|
else:
|
|
service_item.add_icon(self.parent.icon_path)
|
|
if self.generateSlideData(service_item, item):
|
|
return service_item
|
|
else:
|
|
return None
|