sdrangel/sdrgui/gui/dialogpositioner.cpp

132 wiersze
4.4 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2022 Jon Beniston, M7RCE //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <QDebug>
#include <QApplication>
#include <QScreen>
#include <QTimer>
#include <QResizeEvent>
#include "dialogpositioner.h"
DialogPositioner::DialogPositioner(QWidget *dialog, bool center) :
QObject(dialog),
m_dialog(dialog),
m_center(center)
{
connect(dialog->screen(), &QScreen::orientationChanged, this, &DialogPositioner::orientationChanged);
dialog->screen()->setOrientationUpdateMask(Qt::PortraitOrientation
| Qt::LandscapeOrientation
| Qt::InvertedPortraitOrientation
| Qt::InvertedLandscapeOrientation);
if (m_center) {
DialogPositioner::centerDialog(m_dialog);
} else {
DialogPositioner::positionDialog(m_dialog);
}
dialog->installEventFilter(this);
}
void DialogPositioner::orientationChanged(Qt::ScreenOrientation orientation)
{
(void) orientation;
// Need a delay before geometry() reflects new orientation
// https://bugreports.qt.io/browse/QTBUG-109127
QTimer::singleShot(200, [this]() {
if (m_center) {
DialogPositioner::centerDialog(m_dialog);
} else {
DialogPositioner::positionDialog(m_dialog);
}
});
}
void DialogPositioner::centerDialog(QWidget *dialog)
{
// Restrict size of dialog to size of desktop
DialogPositioner::sizeToDesktop(dialog);
// Position in center of screen
QRect desktop = dialog->screen()->availableGeometry();
QSize size = dialog->size();
QPoint pos;
pos.setX((desktop.width() - size.width()) / 2);
pos.setY((desktop.height() - size.height()) / 2);
dialog->move(pos);
}
void DialogPositioner::positionDialog(QWidget *dialog)
{
// Restrict size of dialog to size of desktop
DialogPositioner::sizeToDesktop(dialog);
// Position so fully on screen
QRect desktop = dialog->screen()->availableGeometry();
QSize size = dialog->size();
QPoint pos = dialog->pos();
bool move = false;
if (pos.x() + size.width() > desktop.width())
{
pos.setX(desktop.width() - size.width());
move = true;
}
if (pos.y() + size.height() > desktop.height())
{
pos.setY(desktop.height() - size.height());
move = true;
}
if (move) {
dialog->move(pos);
}
}
void DialogPositioner::sizeToDesktop(QWidget *widget)
{
QRect desktop = widget->screen()->availableGeometry();
QSize size = widget->size();
bool resize = false;
if (size.width() > desktop.width())
{
size.setWidth(desktop.width());
resize = true;
}
if (size.height() > desktop.height())
{
size.setHeight(desktop.height());
resize = true;
}
if (resize) {
widget->resize(size);
}
}
bool DialogPositioner::eventFilter(QObject *obj, QEvent *event)
{
if (event->type() == QEvent::Show)
{
if (m_center) {
DialogPositioner::centerDialog(m_dialog);
} else {
DialogPositioner::positionDialog(m_dialog);
}
}
return QObject::eventFilter(obj, event);
}