add more spacing
[personal-kdebase.git] / workspace / kwin / effects / lookingglass.cpp
bloba594dc3f52fb296f2c7e05193984413d9fd08c13
1 /********************************************************************
2 KWin - the KDE window manager
3 This file is part of the KDE project.
5 Copyright (C) 2007 Rivo Laks <rivolaks@hot.ee>
6 Copyright (C) 2007 Christian Nitschkowski <christian.nitschkowski@kdemail.net>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 *********************************************************************/
22 #include "lookingglass.h"
24 #include <kwinglutils.h>
26 #include <kactioncollection.h>
27 #include <kaction.h>
28 #include <kconfiggroup.h>
29 #include <klocale.h>
30 #include <kdebug.h>
32 #include <kmessagebox.h>
34 namespace KWin
37 KWIN_EFFECT( lookingglass, LookingGlassEffect )
38 KWIN_EFFECT_SUPPORTED( lookingglass, ShaderEffect::supported() )
41 LookingGlassEffect::LookingGlassEffect() : QObject(), ShaderEffect("lookingglass")
43 zoom = 1.0f;
44 target_zoom = 1.0f;
46 actionCollection = new KActionCollection( this );
47 actionCollection->setConfigGlobal(true);
48 actionCollection->setConfigGroup("LookingGlass");
50 KAction* a;
51 a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ZoomIn, this, SLOT( zoomIn())));
52 a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_Plus));
53 a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ZoomOut, this, SLOT( zoomOut())));
54 a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_Minus));
55 a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ActualSize, this, SLOT( toggle())));
56 a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_0));
57 reconfigure( ReconfigureAll );
60 LookingGlassEffect::~LookingGlassEffect()
64 void LookingGlassEffect::reconfigure( ReconfigureFlags )
66 KConfigGroup conf = EffectsHandler::effectConfig("LookingGlass");
67 initialradius = conf.readEntry("Radius", 200);
68 radius = initialradius;
69 kDebug(1212) << QString("Radius from config: %1").arg(radius) << endl;
70 actionCollection->readSettings();
73 void LookingGlassEffect::toggle()
75 if( target_zoom == 1.0f )
76 target_zoom = 2.0f;
77 else
78 target_zoom = 1.0f;
79 setEnabled( true );
82 void LookingGlassEffect::zoomIn()
84 target_zoom = qMin(7.0, target_zoom + 0.5);
85 setEnabled( true );
86 effects->addRepaint( cursorPos().x() - radius, cursorPos().y() - radius, 2*radius, 2*radius );
89 void LookingGlassEffect::zoomOut()
91 target_zoom -= 0.5;
92 if( target_zoom < 1 )
94 target_zoom = 1;
95 setEnabled( false );
97 effects->addRepaint( cursorPos().x() - radius, cursorPos().y() - radius, 2*radius, 2*radius );
100 void LookingGlassEffect::prePaintScreen( ScreenPrePaintData& data, int time )
102 if( zoom != target_zoom )
104 double diff = time / animationTime( 500.0 );
105 if( target_zoom > zoom )
106 zoom = qMin( zoom * qMax( 1.0 + diff, 1.2 ), target_zoom );
107 else
108 zoom = qMax( zoom * qMin( 1.0 - diff, 0.8 ), target_zoom );
109 kDebug(1212) << "zoom is now " << zoom;
110 radius = qBound((double)initialradius, initialradius * zoom, 3.5*initialradius);
112 if( zoom > 1.0f )
114 shader()->bind();
115 shader()->setUniform("zoom", (float)zoom);
116 shader()->setUniform("radius", (float)radius);
117 shader()->unbind();
119 else
121 setEnabled( false );
124 effects->addRepaint( cursorPos().x() - radius, cursorPos().y() - radius, 2*radius, 2*radius );
127 ShaderEffect::prePaintScreen( data, time );
130 void LookingGlassEffect::mouseChanged( const QPoint& pos, const QPoint& old, Qt::MouseButtons,
131 Qt::MouseButtons, Qt::KeyboardModifiers, Qt::KeyboardModifiers )
133 if( pos != old && isEnabled() )
135 effects->addRepaint( pos.x() - radius, pos.y() - radius, 2*radius, 2*radius );
136 effects->addRepaint( old.x() - radius, old.y() - radius, 2*radius, 2*radius );
140 } // namespace
142 #include "lookingglass.moc"