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Diffstat (limited to 'kcontrol/background/bgmonitor.cpp')
-rw-r--r-- | kcontrol/background/bgmonitor.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/kcontrol/background/bgmonitor.cpp b/kcontrol/background/bgmonitor.cpp new file mode 100644 index 000000000..c05e70e5f --- /dev/null +++ b/kcontrol/background/bgmonitor.cpp @@ -0,0 +1,220 @@ +/* vi: ts=8 sts=4 sw=4 + kate: space-indent on; indent-width 4; indent-mode cstyle; + + 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(), TQT_SIGNAL(imageDropped(const TQString &)), this, TQT_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" |