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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:`core` module provides all core application functions
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All the core functions of the OpenLP application including the GUI, settings,
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logging and a plugin framework are contained within the openlp.core module.
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The :mod:`lib` module contains most of the components and libraries that make
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OpenLP work.
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"""
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import logging
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import os.path
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import types
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from PyQt4 import QtCore, QtGui
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log = logging.getLogger(__name__)
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# TODO make external and configurable in alpha 4 via a settings dialog
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html_expands = []
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html_expands.append({u'desc':u'Red', u'start tag':u'{r}',
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u'start html':u'<span style="-webkit-text-fill-color:red">',
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u'end tag':u'{/r}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'Black', u'start tag':u'{b}',
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u'start html':u'<span style="-webkit-text-fill-color:black">',
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u'end tag':u'{/b}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'Blue', u'start tag':u'{bl}',
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u'start html':u'<span style="-webkit-text-fill-color:blue">',
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u'end tag':u'{/bl}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'Yellow', u'start tag':u'{y}',
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u'start html':u'<span style="-webkit-text-fill-color:yellow">',
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u'end tag':u'{/y}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'Green', u'start tag':u'{g}',
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u'start html':u'<span style="-webkit-text-fill-color:green">',
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u'end tag':u'{/g}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'Pink', u'start tag':u'{pk}',
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u'start html':u'<span style="-webkit-text-fill-color:#CC33CC">',
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u'end tag':u'{/pk}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'Orange', u'start tag':u'{o}',
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u'start html':u'<span style="-webkit-text-fill-color:#CC0033">',
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u'end tag':u'{/o}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'Purple', u'start tag':u'{pp}',
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u'start html':u'<span style="-webkit-text-fill-color:#9900FF">',
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u'end tag':u'{/pp}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'White', u'start tag':u'{w}',
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u'start html':u'<span style="-webkit-text-fill-color:white">',
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u'end tag':u'{/w}', u'end html':u'</span>', u'protected':False})
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html_expands.append({u'desc':u'Superscript', u'start tag':u'{su}',
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u'start html':u'<sup>', u'end tag':u'{/su}', u'end html':u'</sup>',
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u'protected':True})
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html_expands.append({u'desc':u'Subscript', u'start tag':u'{sb}',
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u'start html':u'<sub>', u'end tag':u'{/sb}', u'end html':u'</sub>',
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u'protected':True})
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html_expands.append({u'desc':u'Paragraph', u'start tag':u'{p}',
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u'start html':u'<p>', u'end tag':u'{/p}', u'end html':u'</p>',
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u'protected':True})
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html_expands.append({u'desc':u'Bold', u'start tag':u'{st}',
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u'start html':u'<strong>', u'end tag':u'{/st}', u'end html':u'</strong>',
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u'protected':True})
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html_expands.append({u'desc':u'Italics', u'start tag':u'{it}',
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u'start html':u'<em>', u'end tag':u'{/it}', u'end html':u'</em>',
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u'protected':True})
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def translate(context, text, comment=None):
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"""
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A special shortcut method to wrap around the Qt4 translation functions.
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This abstracts the translation procedure so that we can change it if at a
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later date if necessary, without having to redo the whole of OpenLP.
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``context``
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The translation context, used to give each string a context or a
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namespace.
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``text``
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The text to put into the translation tables for translation.
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``comment``
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An identifying string for when the same text is used in different roles
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within the same context.
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"""
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return QtCore.QCoreApplication.translate(context, text, comment)
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def get_text_file_string(text_file):
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"""
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Open a file and return its content as unicode string. If the supplied file
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name is not a file then the function returns False. If there is an error
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loading the file or the content can't be decoded then the function will
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return None.
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``textfile``
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The name of the file.
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"""
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if not os.path.isfile(text_file):
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return False
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file_handle = None
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content_string = None
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try:
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file_handle = open(text_file, u'r')
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content = file_handle.read()
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content_string = content.decode(u'utf-8')
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except (IOError, UnicodeError):
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log.exception(u'Failed to open text file %s' % text_file)
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finally:
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if file_handle:
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file_handle.close()
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return content_string
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def str_to_bool(stringvalue):
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"""
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Convert a string version of a boolean into a real boolean.
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``stringvalue``
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The string value to examine and convert to a boolean type.
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"""
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if isinstance(stringvalue, bool):
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return stringvalue
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return unicode(stringvalue).strip().lower() in (u'true', u'yes', u'y')
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def build_icon(icon):
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"""
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Build a QIcon instance from an existing QIcon, a resource location, or a
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physical file location. If the icon is a QIcon instance, that icon is
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simply returned. If not, it builds a QIcon instance from the resource or
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file name.
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``icon``
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The icon to build. This can be a QIcon, a resource string in the form
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``:/resource/file.png``, or a file location like ``/path/to/file.png``.
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"""
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button_icon = QtGui.QIcon()
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if isinstance(icon, QtGui.QIcon):
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button_icon = icon
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elif isinstance(icon, basestring):
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if icon.startswith(u':/'):
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button_icon.addPixmap(QtGui.QPixmap(icon), QtGui.QIcon.Normal,
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QtGui.QIcon.Off)
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else:
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button_icon.addPixmap(QtGui.QPixmap.fromImage(QtGui.QImage(icon)),
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QtGui.QIcon.Normal, QtGui.QIcon.Off)
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elif isinstance(icon, QtGui.QImage):
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button_icon.addPixmap(QtGui.QPixmap.fromImage(icon),
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QtGui.QIcon.Normal, QtGui.QIcon.Off)
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return button_icon
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def context_menu_action(base, icon, text, slot):
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"""
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Utility method to help build context menus for plugins
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``base``
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The parent menu to add this menu item to
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``icon``
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An icon for this action
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``text``
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The text to display for this action
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``slot``
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The code to run when this action is triggered
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"""
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action = QtGui.QAction(text, base)
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if icon:
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action.setIcon(build_icon(icon))
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QtCore.QObject.connect(action, QtCore.SIGNAL(u'triggered()'), slot)
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return action
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def context_menu(base, icon, text):
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"""
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Utility method to help build context menus for plugins
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``base``
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The parent object to add this menu to
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``icon``
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An icon for this menu
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``text``
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The text to display for this menu
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"""
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action = QtGui.QMenu(text, base)
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action.setIcon(build_icon(icon))
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return action
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def context_menu_separator(base):
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"""
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Add a separator to a context menu
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``base``
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The menu object to add the separator to
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"""
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action = QtGui.QAction(u'', base)
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action.setSeparator(True)
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return action
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def image_to_byte(image):
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"""
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Resize an image to fit on the current screen for the web and returns
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it as a byte stream.
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``image``
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The image to converted.
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"""
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byte_array = QtCore.QByteArray()
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# use buffer to store pixmap into byteArray
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buffie = QtCore.QBuffer(byte_array)
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buffie.open(QtCore.QIODevice.WriteOnly)
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if isinstance(image, QtGui.QImage):
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pixmap = QtGui.QPixmap.fromImage(image)
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else:
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pixmap = QtGui.QPixmap(image)
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pixmap.save(buffie, "PNG")
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# convert to base64 encoding so does not get missed!
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return byte_array.toBase64()
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def resize_image(image, width, height, background=QtCore.Qt.black):
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"""
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Resize an image to fit on the current screen.
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``image``
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The image to resize.
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``width``
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The new image width.
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``height``
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The new image height.
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``background``
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The background colour defaults to black.
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"""
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preview = QtGui.QImage(image)
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if not preview.isNull():
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# Only resize if different size
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if preview.width() == width and preview.height == height:
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return preview
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preview = preview.scaled(width, height, QtCore.Qt.KeepAspectRatio,
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QtCore.Qt.SmoothTransformation)
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realw = preview.width()
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realh = preview.height()
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# and move it to the centre of the preview space
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new_image = QtGui.QImage(width, height,
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QtGui.QImage.Format_ARGB32_Premultiplied)
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new_image.fill(background)
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painter = QtGui.QPainter(new_image)
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painter.drawImage((width - realw) / 2, (height - realh) / 2, preview)
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return new_image
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def check_item_selected(list_widget, message):
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"""
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Check if a list item is selected so an action may be performed on it
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``list_widget``
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The list to check for selected items
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``message``
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The message to give the user if no item is selected
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"""
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if not list_widget.selectedIndexes():
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QtGui.QMessageBox.information(list_widget.parent(),
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translate('OpenLP.MediaManagerItem', 'No Items Selected'), message)
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return False
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return True
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def clean_tags(text):
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"""
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Remove Tags from text for display
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"""
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text = text.replace(u'<br>', u'\n')
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for tag in html_expands:
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text = text.replace(tag[u'start tag'], u'')
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text = text.replace(tag[u'end tag'], u'')
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return text
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def expand_tags(text):
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"""
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Expand tags HTML for display
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"""
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for tag in html_expands:
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text = text.replace(tag[u'start tag'], tag[u'start html'])
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text = text.replace(tag[u'end tag'], tag[u'end html'])
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return text
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from spelltextedit import SpellTextEdit
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from eventreceiver import Receiver
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from settingsmanager import SettingsManager
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from plugin import PluginStatus, Plugin
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from pluginmanager import PluginManager
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from settingstab import SettingsTab
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from serviceitem import ServiceItem
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from serviceitem import ServiceItemType
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from serviceitem import ItemCapabilities
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from htmlbuilder import build_html, build_lyrics_format_css, \
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build_lyrics_outline_css
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from toolbar import OpenLPToolbar
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from dockwidget import OpenLPDockWidget
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from theme import ThemeLevel, ThemeXML
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from renderer import Renderer
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from rendermanager import RenderManager
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from mediamanageritem import MediaManagerItem
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from baselistwithdnd import BaseListWithDnD
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