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qgspanelwidgetstack.cpp
176 lines (152 loc) · 4.85 KB
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qgspanelwidgetstack.cpp
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/***************************************************************************
qgspanelwidget.cpp
---------------------
begin : June 2016
copyright : (C) 2016 by Nathan Woodrow
email :
***************************************************************************
* *
* 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; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <QDialogButtonBox>
#include <QPushButton>
#include <QDialog>
#include <QSettings>
#include "qgslogger.h"
#include "qgspanelwidgetstack.h"
#include "qgspanelwidget.h"
QgsPanelWidgetStack::QgsPanelWidgetStack( QWidget *parent )
: QWidget( parent )
{
setupUi( this );
clear();
connect( mBackButton, &QAbstractButton::pressed, this, &QgsPanelWidgetStack::acceptCurrentPanel );
}
void QgsPanelWidgetStack::setMainPanel( QgsPanelWidget *panel )
{
// TODO Don't allow adding another main widget or else that would be strange for the user.
connect( panel, &QgsPanelWidget::showPanel, this, &QgsPanelWidgetStack::showPanel,
// using unique connection because addMainPanel() may be called multiple times
// for a panel, so showPanel() slot could be invoked more times from one signal
Qt::UniqueConnection );
mStackedWidget->insertWidget( 0, panel );
mStackedWidget->setCurrentIndex( 0 );
}
QgsPanelWidget *QgsPanelWidgetStack::mainPanel()
{
return qobject_cast<QgsPanelWidget *>( mStackedWidget->widget( 0 ) );
}
QgsPanelWidget *QgsPanelWidgetStack::takeMainPanel()
{
// clear out the current stack
acceptAllPanels();
QWidget *widget = mStackedWidget->widget( 0 );
mStackedWidget->removeWidget( widget );
return qobject_cast<QgsPanelWidget *>( widget );
}
void QgsPanelWidgetStack::clear()
{
for ( int i = mStackedWidget->count() - 1; i >= 0; i-- )
{
if ( QgsPanelWidget *panelWidget = qobject_cast<QgsPanelWidget *>( mStackedWidget->widget( i ) ) )
{
mStackedWidget->removeWidget( panelWidget );
if ( panelWidget->autoDelete() )
{
panelWidget->deleteLater();
}
}
else if ( QWidget *widget = mStackedWidget->widget( i ) )
{
mStackedWidget->removeWidget( widget );
widget->deleteLater();
}
}
mTitles.clear();
mTitleText->hide();
mBackButton->hide();
this->updateBreadcrumb();
}
QgsPanelWidget *QgsPanelWidgetStack::currentPanel()
{
return qobject_cast<QgsPanelWidget *>( mStackedWidget->currentWidget() );
}
void QgsPanelWidgetStack::acceptCurrentPanel()
{
// You can't accept the main panel.
if ( mStackedWidget->currentIndex() <= 0 )
return;
QgsPanelWidget *widget = currentPanel();
widget->acceptPanel();
}
void QgsPanelWidgetStack::acceptAllPanels()
{
//avoid messy multiple redraws
setUpdatesEnabled( false );
mStackedWidget->setUpdatesEnabled( false );
for ( int i = mStackedWidget->count() - 1; i > 0; --i )
{
if ( QgsPanelWidget *panelWidget = qobject_cast<QgsPanelWidget *>( mStackedWidget->widget( i ) ) )
{
panelWidget->acceptPanel();
}
}
setUpdatesEnabled( true );
mStackedWidget->setUpdatesEnabled( true );
}
void QgsPanelWidgetStack::showPanel( QgsPanelWidget *panel )
{
mTitles.push( panel->panelTitle() );
connect( panel, &QgsPanelWidget::panelAccepted, this, &QgsPanelWidgetStack::closePanel );
connect( panel, &QgsPanelWidget::showPanel, this, &QgsPanelWidgetStack::showPanel );
int index = mStackedWidget->addWidget( panel );
mStackedWidget->setCurrentIndex( index );
mBackButton->show();
mTitleText->show();
this->updateBreadcrumb();
}
void QgsPanelWidgetStack::closePanel( QgsPanelWidget *panel )
{
mTitles.pop();
mStackedWidget->setCurrentIndex( mStackedWidget->currentIndex() - 1 );
mStackedWidget->removeWidget( panel );
if ( panel->autoDelete() )
{
panel->deleteLater();
}
if ( mStackedWidget->currentIndex() == 0 )
{
mBackButton->hide();
mTitleText->hide();
}
this->updateBreadcrumb();
}
void QgsPanelWidgetStack::mouseReleaseEvent( QMouseEvent *e )
{
if ( e->button() == Qt::BackButton )
{
acceptCurrentPanel();
}
}
void QgsPanelWidgetStack::keyPressEvent( QKeyEvent *e )
{
if ( e->key() == Qt::Key_Escape )
{
acceptCurrentPanel();
}
}
void QgsPanelWidgetStack::updateBreadcrumb()
{
QString breadcrumb;
Q_FOREACH ( QString title, mTitles )
{
breadcrumb += QStringLiteral( " %1 >" ).arg( title );
}
// Remove the last
breadcrumb.chop( 1 );
mTitleText->setText( breadcrumb );
}