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#############################################################################
##
## Copyright (C) 2010 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:LGPL$
## Commercial Usage
## Licensees holding valid Qt Commercial licenses may use this file in
## accordance with the Qt Commercial License Agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and Nokia.
##
## GNU Lesser General Public License Usage
## Alternatively, this file may be used under the terms of the GNU Lesser
## General Public License version 2.1 as published by the Free Software
## Foundation and appearing in the file LICENSE.LGPL included in the
## packaging of this file. Please review the following information to
## ensure the GNU Lesser General Public License version 2.1 requirements
## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
##
## In addition, as a special exception, Nokia gives you certain additional
## rights. These rights are described in the Nokia Qt LGPL Exception
## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU
## General Public License version 3.0 as published by the Free Software
## Foundation and appearing in the file LICENSE.GPL included in the
## packaging of this file. Please review the following information to
## ensure the GNU General Public License version 3.0 requirements will be
## met: http://www.gnu.org/copyleft/gpl.html.
##
## If you have questions regarding the use of this file, please contact
## Nokia at qt-info@nokia.com.
## $QT_END_LICENSE$
##
#############################################################################
from PyQt4 import QtCore, QtGui, QtXml
from colors import Colors
from demoitem import DemoItem
from demoitemanimation import DemoItemAnimation
from demotextitem import DemoTextItem
from headingitem import HeadingItem
from imageitem import ImageItem
class ExampleContent(DemoItem):
def __init__(self, name, scene=None, parent=None):
super(ExampleContent, self).__init__(scene, parent)
# Prevent a circular import.
from menumanager import MenuManager
self._menu_manager = MenuManager.instance()
self.name = name
self.heading = None
self.description = None
self.screenshot = None
def prepare(self):
if not self.prepared:
self.prepared = True
self.createContent()
def animationStopped(self, id):
if id == DemoItemAnimation.ANIM_OUT:
# Free up some memory.
self.heading = None
self.description = None
self.screenshot = None
self.prepared = False
def loadDescription(self):
ba = self._menu_manager.getHtml(self.name)
exampleDoc = QtXml.QDomDocument()
exampleDoc.setContent(ba, False)
paragraphs = exampleDoc.elementsByTagName('p')
if paragraphs.length() < 1:
Colors.debug("- ExampleContent.loadDescription(): Could not load description:", self._menu_manager.info[self.name].get('docfile'))
description = Colors.contentColor + "Could not load description. Ensure that the documentation for Qt is built."
for p in range(paragraphs.length()):
description = self.extractTextFromParagraph(paragraphs.item(p))
if self.isSummary(description):
break
return Colors.contentColor + description
def isSummary(self, text):
re = QtCore.QRegExp("(In )?((The|This) )?(%s )?.*(tutorial|example|demo|application)" % self.name, QtCore.Qt.CaseInsensitive)
return ('[' not in text) and (re.indexIn(text) >= 0)
def extractTextFromParagraph(self, parentNode):
description = ''
node = parentNode.firstChild()
while not node.isNull():
if node.isText():
description += Colors.contentColor + node.nodeValue()
elif node.hasChildNodes():
if node.nodeName() == 'b':
beginTag = '<b>'
endTag = '</b>'
elif node.nodeName() == 'a':
beginTag = Colors.contentColor
endTag = '</font>'
elif node.nodeName() == 'i':
beginTag = '<i>'
endTag = '</i>'
elif node.nodeName() == 'tt':
beginTag = '<tt>'
endTag = '</tt>'
else:
beginTag = endTag = ''
description += beginTag + self.extractTextFromParagraph(node) + endTag
node = node.nextSibling()
return description
def createContent(self):
# Create the items.
self.heading = HeadingItem(self.name, self.scene(), self)
self.description = DemoTextItem(self.loadDescription(),
Colors.contentFont(), Colors.heading, 500, self.scene(), self)
imgHeight = 340 - int(self.description.boundingRect().height()) + 50
self.screenshot = ImageItem(QtGui.QImage.fromData(self._menu_manager.getImage(self.name)), 550, imgHeight, self.scene(), self)
# Place the items on screen.
self.heading.setPos(0, 3)
self.description.setPos(0, self.heading.pos().y() + self.heading.boundingRect().height() + 10)
self.screenshot.setPos(0, self.description.pos().y() + self.description.boundingRect().height() + 10)
def boundingRect(self):
return QtCore.QRectF(0, 0, 500, 100)
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