forked from openlp/openlp
244 lines
9.2 KiB
Python
244 lines
9.2 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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# --------------------------------------------------------------------------- #
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# Copyright (c) 2008-2009 Raoul Snyman #
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# Portions copyright (c) 2008-2009 Martin Thompson, Tim Bentley, Carsten #
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# Tinggaard, Jon Tibble, Jonathan Corwin, Maikel Stuivenberg, Scott Guerrieri #
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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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import logging
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import os
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import time
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from PyQt4 import QtGui
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from openlp.core.lib import buildIcon
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class ServiceType(object):
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"""
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Defines the type of service item
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"""
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Text = 1
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Image = 2
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Command = 3
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class ServiceItem(object):
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"""
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The service item is a base class for the plugins to use to interact with
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the service manager, the slide controller, and the projection screen
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compositor.
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"""
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global log
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log = logging.getLogger(u'ServiceItem')
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log.info(u'Service Item created')
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def __init__(self, hostplugin=None):
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"""
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Set up the service item.
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``hostplugin``
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The plugin that this service item belongs to.
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"""
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self.plugin = hostplugin
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if hostplugin is not None:
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self.RenderManager = self.plugin.render_manager
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self.shortname = hostplugin.name
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self.name = self.plugin.name
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self.title = u''
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self.audit = u''
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self.items = []
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self.iconic_representation = None
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self.raw_slides = None
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self.frames = []
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self.raw_footer = None
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self.theme = None
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self.service_item_path = None
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self.service_item_type = None
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self.service_frames = []
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def addIcon(self, icon):
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"""
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Add an icon to the service item. This is used when displaying the
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service item in the service manager.
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``icon``
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An instance of QIcon or a string to an icon in the resource or on
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disk.
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"""
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self.icon = icon
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self.iconic_representation = buildIcon(icon)
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def render(self):
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"""
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The render method is what generates the frames for the screen.
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"""
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log.debug(u'Render called')
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self.frames = []
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if self.service_item_type == ServiceType.Text:
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log.debug(u'Formatting slides')
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if self.theme is None:
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self.RenderManager.set_override_theme(None)
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else:
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self.RenderManager.set_override_theme(self.theme)
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for slide in self.service_frames:
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before = time.time()
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formated = self.RenderManager.format_slide(slide[u'raw_slide'])
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for format in formated:
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frame = None
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lines = u''
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for line in format:
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lines += line + u'\n'
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title = lines.split(u'\n')[0]
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self.frames.append({u'title': title, u'text': lines,
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u'image': frame})
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log.info(u'Formatting took %4s' % (time.time() - before))
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elif self.service_item_type == ServiceType.Command:
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self.frames = self.service_frames
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elif self.service_item_type == ServiceType.Image:
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for slide in self.service_frames:
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slide[u'image'] = \
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self.RenderManager.resize_image(slide[u'image'])
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self.frames = self.service_frames
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else:
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log.error(u'Invalid value renderer :%s' % self.service_item_type)
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def render_individual(self, row):
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"""
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Takes an array of text and geneates an Image from the
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theme. It assumes the text will fit on the screen as it
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has generated by the render method above.
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"""
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log.debug(u'render individual')
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if self.theme is None:
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self.RenderManager.set_override_theme(None)
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else:
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self.RenderManager.set_override_theme(self.theme)
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format = self.frames[row][u'text'].split(u'\n')
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frame = self.RenderManager.generate_slide(format,
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self.raw_footer)
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return frame
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def add_from_image(self, path, frame_title, image):
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"""
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Add an image slide to the service item.
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``path``
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The directory in which the image file is located.
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``frame_title``
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A title for the slide in the service item.
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``image``
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The actual image file name.
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"""
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self.service_item_type = ServiceType.Image
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self.service_item_path = path
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self.service_frames.append(
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{u'title': frame_title, u'text':None, u'image': image})
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def add_from_text(self, frame_title, raw_slide):
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"""
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Add a text slide to the service item.
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``frame_title``
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The title of the slide in the service item.
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``raw_slide``
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The raw text of the slide.
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"""
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self.service_item_type = ServiceType.Text
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frame_title = frame_title.split(u'\n')[0]
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self.service_frames.append(
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{u'title': frame_title, u'raw_slide': raw_slide})
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def add_from_command(self, path, frame_title):
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"""
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Add a slide from a command.
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``frame_title``
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The title of the slide in the service item.
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``command``
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The command of/for the slide.
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"""
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self.service_item_type = ServiceType.Command
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self.service_item_path = path
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self.service_frames.append(
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{u'title': frame_title, u'command': None})
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def get_service_repr(self):
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"""
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This method returns some text which can be saved into the service
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file to represent this item.
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"""
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service_header = {
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u'name': self.name.lower(),
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u'plugin': self.shortname,
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u'theme':self.theme,
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u'title':self.title,
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u'icon':self.icon,
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u'footer':self.raw_footer,
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u'type':self.service_item_type,
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u'audit':self.audit
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}
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service_data = []
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if self.service_item_type == ServiceType.Text:
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for slide in self.service_frames:
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service_data.append(slide)
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elif self.service_item_type == ServiceType.Image:
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for slide in self.service_frames:
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service_data.append(slide[u'title'])
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elif self.service_item_type == ServiceType.Command:
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for slide in self.service_frames:
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service_data.append(slide[u'title'])
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return {u'header': service_header, u'data': service_data}
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def set_from_service(self, serviceitem, path=None):
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"""
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This method takes a service item from a saved service file (passed
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from the ServiceManager) and extracts the data actually required.
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``serviceitem``
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The item to extract data from.
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``path``
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Defaults to *None*. Any path data, usually for images.
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"""
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header = serviceitem[u'serviceitem'][u'header']
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self.title = header[u'title']
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self.name = header[u'name']
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self.service_item_type = header[u'type']
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self.shortname = header[u'plugin']
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self.theme = header[u'theme']
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self.addIcon(header[u'icon'])
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self.raw_footer = header[u'footer']
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self.audit = header[u'audit']
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if self.service_item_type == ServiceType.Text:
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for slide in serviceitem[u'serviceitem'][u'data']:
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self.service_frames.append(slide)
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elif self.service_item_type == ServiceType.Image:
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for text_image in serviceitem[u'serviceitem'][u'data']:
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filename = os.path.join(path, text_image)
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real_image = QtGui.QImage(unicode(filename))
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self.add_from_image(path, text_image, real_image)
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elif self.service_item_type == ServiceType.Command:
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for text_image in serviceitem[u'serviceitem'][u'data']:
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filename = os.path.join(path, text_image)
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self.add_from_command(path, text_image)
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