/**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ** the names of its contributors may be used to endorse or promote ** products derived from this software without specific prior written ** permission. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** $QT_END_LICENSE$ ** ****************************************************************************/ #include <QtGui> // ![0] #include <QtGui/QX11Info> #include <X11/Xlib.h> #include <X11/Xatom.h> // ![0] class ZoomWidget : public QWidget { Q_OBJECT public: ZoomWidget() { QVBoxLayout *layout = new QVBoxLayout(this); progressBar = new QProgressBar; progressBar->setValue(50); layout->addWidget(new QLabel("<p align=\"center\">Please press the zoom keys</p>")); layout->addWidget(progressBar); grabZoomKeys(true); } // ![1] void grabZoomKeys(bool grab) { if (!winId()) { qWarning("Can't grab keys unless we have a window id"); return; } unsigned long val = (grab) ? 1 : 0; Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False); if (!atom) { qWarning("Unable to obtain _HILDON_ZOOM_KEY_ATOM. This example will only work " "on a Maemo 5 device!"); return; } XChangeProperty (QX11Info::display(), winId(), atom, XA_INTEGER, 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1); } // ![1] protected: // ![2] void keyPressEvent(QKeyEvent* event) { switch (event->key()) { case Qt::Key_F7: progressBar->setValue(progressBar->value() + 1); event->accept(); break; case Qt::Key_F8: progressBar->setValue(progressBar->value() - 1); event->accept(); break; } QWidget::keyPressEvent(event); } // ![2] private: QProgressBar *progressBar; }; int main(int argc, char *argv[]) { QApplication app(argc, argv); ZoomWidget w; w.show(); return app.exec(); } #include "main.moc"