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/*
This file is part of the KDE project, module kcmbackground.
Copyright (C) 2002 Laurent Montel <montell@club-internet.fr>
Copyright (C) 2003 Waldo Bastian <bastian@kde.org>
Copyright (C) 2005 David Saxton <david@bluehaze.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <kdebug.h>
#include <tdelocale.h>
#include <kpixmap.h>
#include <kstandarddirs.h>
#include <kurldrag.h>
#include <tqapplication.h>
#include <tqpixmap.h>
#include <tqwhatsthis.h>
#include "bgmonitor.h"
// Constants used (should they be placed somewhere?)
// Size of monitor image: 200x186
// Geometry of "display" part of monitor image: (23,14)-[151x115]
//BEGIN class BGMonitorArrangement
BGMonitorArrangement::BGMonitorArrangement(TQWidget *parent, const char *name)
: TQWidget(parent, name)
{
m_pBGMonitor.resize( TQApplication::desktop()->numScreens(), 0l );
for (int screen = 0; screen < TQApplication::desktop()->numScreens(); ++screen)
{
BGMonitorLabel * label = new BGMonitorLabel(this);
m_pBGMonitor[screen] = label;
connect( label->monitor(), TQ_SIGNAL(imageDropped(const TQString &)), this, TQ_SIGNAL(imageDropped(const TQString &)) );
}
parent->setFixedSize(200, 186);
setFixedSize(200, 186);
updateArrangement();
}
BGMonitor * BGMonitorArrangement::monitor( unsigned screen ) const
{
return m_pBGMonitor[screen]->monitor();
}
TQRect BGMonitorArrangement::expandToPreview( TQRect r ) const
{
double scaleX = 200.0 / 151.0;
double scaleY = 186.0 / 115.0;
return TQRect( int(r.x()*scaleX), int(r.y()*scaleY), int(r.width()*scaleX), int(r.height()*scaleY) );
}
TQSize BGMonitorArrangement::expandToPreview( TQSize s ) const
{
double scaleX = 200.0 / 151.0;
double scaleY = 186.0 / 115.0;
return TQSize( int(s.width()*scaleX), int(s.height()*scaleY) );
}
TQPoint BGMonitorArrangement::expandToPreview( TQPoint p ) const
{
double scaleX = 200.0 / 151.0;
double scaleY = 186.0 / 115.0;
return TQPoint( int(p.x()*scaleX), int(p.y()*scaleY) );
}
void BGMonitorArrangement::updateArrangement()
{
// In this function, sizes, etc have a normal value, and their "expanded"
// value. The expanded value is used for setting the size of the monitor
// image that contains the preview of the background. The monitor image
// will set the background preview back to the normal value.
TQRect overallGeometry;
for (int screen = 0; screen < TQApplication::desktop()->numScreens(); ++screen)
overallGeometry |= TQApplication::desktop()->screenGeometry(screen);
TQRect expandedOverallGeometry = expandToPreview(overallGeometry);
double scale = TQMIN(
double(width()) / double(expandedOverallGeometry.width()),
double(height()) / double(expandedOverallGeometry.height())
);
m_combinedPreviewSize = overallGeometry.size() * scale;
m_maxPreviewSize = TQSize(0,0);
int previousMax = 0;
for (int screen = 0; screen < TQApplication::desktop()->numScreens(); ++screen)
{
TQPoint topLeft = (TQApplication::desktop()->screenGeometry(screen).topLeft() - overallGeometry.topLeft()) * scale;
TQPoint expandedTopLeft = expandToPreview(topLeft);
TQSize previewSize = TQApplication::desktop()->screenGeometry(screen).size() * scale;
TQSize expandedPreviewSize = expandToPreview(previewSize);
if ( (previewSize.width() * previewSize.height()) > previousMax )
{
previousMax = previewSize.width() * previewSize.height();
m_maxPreviewSize = previewSize;
}
m_pBGMonitor[screen]->setPreviewPosition( TQRect( topLeft, previewSize ) );
m_pBGMonitor[screen]->setGeometry( TQRect( expandedTopLeft, expandedPreviewSize ) );
m_pBGMonitor[screen]->updateMonitorGeometry();
}
}
void BGMonitorArrangement::resizeEvent( TQResizeEvent * e )
{
TQWidget::resizeEvent(e);
updateArrangement();
}
void BGMonitorArrangement::setPixmap( const KPixmap & pm )
{
for (unsigned screen = 0; screen < m_pBGMonitor.size(); ++screen)
{
TQRect position = m_pBGMonitor[screen]->previewPosition();
TQPixmap monitorPixmap( position.size(), pm.depth() );
copyBlt( &monitorPixmap, 0, 0, &pm, position.x(), position.y(), position.width(), position.height() );
m_pBGMonitor[screen]->monitor()->setPixmap(monitorPixmap);
}
}
//END class BGMonitorArrangement
//BEGIN class BGMonitorLabel
BGMonitorLabel::BGMonitorLabel(TQWidget *parent, const char *name)
: TQLabel(parent, name)
{
setAlignment(AlignCenter);
setScaledContents(true);
setPixmap( TQPixmap( locate("data", "kcontrol/pics/monitor.png") ) );
m_pBGMonitor = new BGMonitor(this);
TQWhatsThis::add( this, i18n("This picture of a monitor contains a preview of what the current settings will look like on your desktop.") );
}
void BGMonitorLabel::updateMonitorGeometry()
{
double scaleX = double(width()) / double(sizeHint().width());
double scaleY = double(height()) / double(sizeHint().height());
kdDebug() << k_funcinfo << " Setting geometry to " << TQRect( int(23*scaleX), int(14*scaleY), int(151*scaleX), int(115*scaleY) ) << endl;
m_pBGMonitor->setGeometry( int(23*scaleX), int(14*scaleY), int(151*scaleX), int(115*scaleY) );
}
void BGMonitorLabel::resizeEvent( TQResizeEvent * e )
{
TQWidget::resizeEvent(e);
updateMonitorGeometry();
}
//END class BGMonitorLabel
//BEGIN class BGMonitor
BGMonitor::BGMonitor(TQWidget *parent, const char *name)
: TQLabel(parent, name)
{
setAlignment(AlignCenter);
setScaledContents(true);
setAcceptDrops(true);
}
void BGMonitor::dropEvent(TQDropEvent *e)
{
if (!KURLDrag::canDecode(e))
return;
KURL::List uris;
if (KURLDrag::decode(e, uris) && (uris.count() > 0)) {
// TODO: Download remote file
if (uris.first().isLocalFile())
emit imageDropped(uris.first().path());
}
}
void BGMonitor::dragEnterEvent(TQDragEnterEvent *e)
{
if (KURLDrag::canDecode(e))
e->accept(rect());
else
e->ignore(rect());
}
//END class BGMonitor
#include "bgmonitor.moc"
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