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/***************************************************************************
* Copyright (C) 2003-2005 by liuspider *
* liuspider@users.sourceforge.net *
* *
* 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 "scimdragableframe.h"
#include <qtimer.h>
//this variable should be shared by all instances of this class
static bool mousePressed = false;
ScimDragableFrame::ScimDragableFrame( QWidget *body, QWidget *parent, const char *name, WFlags f )
: QFrame( parent, name, f), m_keepVisible( FALSE ), m_bodyWidget( body ), m_timer( 0 )
{
// ctrlDown = FALSE;
m_screen = QApplication::desktop()->screenGeometry();
}
bool ScimDragableFrame::isMouseButtonPressed()
{
return mousePressed;
}
void ScimDragableFrame::reTopParent(QWidget *body)
{
m_bodyWidget = body;
}
void ScimDragableFrame::mousePressEvent( QMouseEvent *e )
{
// ctrlDown = ( e->state() & ControlButton ) == ControlButton;
e->ignore();
if ( e->button() == LeftButton )
{
e->accept();
m_hadDblClick = FALSE;
mousePressed = TRUE;
if(m_bodyWidget)
m_offset = mapTo(m_bodyWidget, e->pos());
}
QFrame::mousePressEvent(e);
}
void ScimDragableFrame::mouseMoveEvent( QMouseEvent *e )
{
if ( mousePressed && e->pos() != m_offset )
{
// ctrlDown = ( e->state() & ControlButton ) == ControlButton;
if(m_bodyWidget)
m_bodyWidget->move(e->globalPos()-m_offset);
}
QFrame::mouseMoveEvent(e);
}
void ScimDragableFrame::mouseReleaseEvent( QMouseEvent *e )
{
// ctrlDown = FALSE;
if ( mousePressed )
{
mousePressed = FALSE;
adjustSize();
}
QFrame::mouseReleaseEvent(e);
}
void ScimDragableFrame::mouseDoubleClickEvent( QMouseEvent *e )
{
e->ignore();
if ( e->button() != LeftButton )
return;
e->accept();
emit doubleClicked();
m_hadDblClick = TRUE;
}
bool ScimDragableFrame::scheduleAdjustSize()
{
if(!m_timer)
{
m_timer = new QTimer(this);
connect( m_timer, SIGNAL(timeout()), SLOT(adjustSize()) );
}
if(!m_timer->isActive()) {
m_timer->start( 0, true );
return true; //another is waiting
} else
return false;
}
void ScimDragableFrame::adjustSize()
{
if(isKeepVisible())
{
QFrame::adjustSize();
QRect visiblerect = frameGeometry();
if( !screenContainsRect(visiblerect) )
{
move( visiblerect.topLeft() );
}
}
else if(m_bodyWidget) //otherwise if this widget is not keepvisible in screen,
m_bodyWidget->adjustSize(); //then adjustSize() of m_bodyWidget should be called
else
QFrame::adjustSize();
}
bool ScimDragableFrame::screenContainsRect(QRect & visiblerect)
{
if( !m_screen.contains( visiblerect ) )
{
QRect intersect = m_screen & visiblerect;
if ( intersect.isEmpty() )
{
visiblerect.moveCenter( m_screen.center() );
}
else
{
if( intersect.contains( visiblerect.topLeft() ) )
{
visiblerect.moveBottomRight( intersect.bottomRight() );
}
else
{
visiblerect = intersect;
}
}
return false;
}
return true;
}
#include "scimdragableframe.moc"
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