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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 1.0, 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 are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
from PySide.QtCore import *
from PySide.QtGui import *
import sys
class MyScrollArea (QAbstractScrollArea):
widget = None
def __init__(widget):
self.setWidget(widget);
def setWidget(w):
self.widget = w;
self.widget.setParent(viewport());
if not self.widget.testAttribute(Qt.WA_Resized):
self.widget.resize(widget.sizeHint())
self.verticalScrollBar().setValue(0)
self.verticalScrollBar().setValue(0)
self.updateArea()
def updateWidgetPosition():
//! [0]
hvalue = self.horizontalScrollBar().value()
vvalue = self.verticalScrollBar().value()
topLeft = self.viewport().rect().topLeft()
self.widget.move(topLeft.x() - hvalue, topLeft.y() - vvalue)
//! [0]
def scrollContentsBy(dx, dy):
self.updateWidgetPosition()
def updateArea():
//! [1]
areaSize = viewport().size()
widgetSize = widget.size()
self.verticalScrollBar().setPageStep(widgetSize.height())
self.horizontalScrollBar().setPageStep(widgetSize.width())
self.verticalScrollBar().setRange(0, widgetSize.height() - areaSize.height())
self.horizontalScrollBar().setRange(0, widgetSize.width() - areaSize.width())
self.updateWidgetPosition()
//! [1]
def resizeEvent(QResizeEvent):
self.updateArea()
app = QApplication(sys.argv)
pixmap = QPixmap("mypixmap.png")
label = QLabel()
label.setPixmap(pixmap)
area = MyScrollArea(label)
area.resize(300, 300)
area.show()
area.setWidget(label)
app.exec_();
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