C++/Qt/QSplitter
Paint QSplitter
<source lang="cpp"> /****************************************************************************
- Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
- All rights reserved.
- 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 1.1, 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.
- $QT_END_LICENSE$
-
- /
- ifndef SPLITTER_H
- define SPLITTER_H
- include <QLinearGradient>
- include <QSplitter>
- include <QSplitterHandle>
class QPaintEvent;
class Splitter : public QSplitter { public:
Splitter(Qt::Orientation orientation, QWidget *parent = 0);
protected:
QSplitterHandle *createHandle();
};
class SplitterHandle : public QSplitterHandle { public:
SplitterHandle(Qt::Orientation orientation, QSplitter *parent);
protected:
void paintEvent(QPaintEvent *event);
private:
QLinearGradient gradient;
};
- endif
- include <QtGui>
- include "splitter.h"
SplitterHandle::SplitterHandle(Qt::Orientation orientation, QSplitter *parent)
: QSplitterHandle(orientation, parent)
{
gradient.setColorAt(0.0, Qt::darkGreen); gradient.setColorAt(0.25, Qt::white); gradient.setColorAt(1.0, Qt::darkGreen);
}
void SplitterHandle::paintEvent(QPaintEvent *event) {
QPainter painter(this); if (orientation() == Qt::Horizontal) { gradient.setStart(rect().left(), rect().height()/2); gradient.setFinalStop(rect().right(), rect().height()/2); } else { gradient.setStart(rect().width()/2, rect().top()); gradient.setFinalStop(rect().width()/2, rect().bottom()); } painter.fillRect(event->rect(), QBrush(gradient));
}
Splitter::Splitter(Qt::Orientation orientation, QWidget *parent)
: QSplitter(orientation, parent)
{ }
QSplitterHandle *Splitter::createHandle() {
return new SplitterHandle(orientation(), this);
}
- include <QApplication>
- include <QLabel>
- include "splitter.h"
int main(int argc, char *argv[]) {
QApplication app(argc, argv); Splitter splitter(Qt::Horizontal); splitter.addWidget(new QLabel("Hello")); splitter.addWidget(new QLabel("World")); Splitter verticalSplitter(Qt::Vertical, &splitter); verticalSplitter.addWidget(new QLabel("A")); verticalSplitter.addWidget(new QLabel("B")); splitter.show(); return app.exec();
}
</source>
QSplitter, QListView and QTreeView
<source lang="cpp"> /****************************************************************************
- Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
- All rights reserved.
- 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 1.1, 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.
- $QT_END_LICENSE$
-
- /
- include <QtGui>
void processSize(int) { } int main() {
QWidget *parent = 0;
QSplitter *splitter = new QSplitter(parent); QListView *listview = new QListView; QTreeView *treeview = new QTreeView; QTextEdit *textedit = new QTextEdit; splitter->addWidget(listview); splitter->addWidget(treeview); splitter->addWidget(textedit);
{ // SAVE STATE QSettings settings; settings.setValue("splitterSizes", splitter->saveState()); } { // RESTORE STATE QSettings settings; splitter->restoreState(settings.value("splitterSizes").toByteArray()); }
QListIterator<int> it(splitter->sizes()); while (it.hasNext()) processSize(it.next());
return 0;
}
</source>
Set Stretch Factor for QSplitter
<source lang="cpp">
- include <QtGui>
int main(int argc, char *argv[]){
QApplication a(argc, argv); QSplitter s; QTextEdit *txtEdit = 0; for (int stretch = 1; stretch <= 5; stretch++) { txtEdit = new QTextEdit(&s); s.addWidget(txtEdit); s.setStretchFactor(s.indexOf(txtEdit), stretch); } s.show(); return a.exec();
}
</source>