kwin/effects/highlightwindow/highlightwindow.cpp

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2009 Lucas Murray <lmurray@undefinedfire.com>
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.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "highlightwindow.h"
#include <kdebug.h>
namespace KWin
{
KWIN_EFFECT( highlightwindow, HighlightWindowEffect )
HighlightWindowEffect::HighlightWindowEffect()
: m_finishing( false )
, m_fadeDuration( double( animationTime( 150 )))
, m_monitorWindow( NULL )
{
m_atom = XInternAtom( display(), "_KDE_WINDOW_HIGHLIGHT", False );
effects->registerPropertyType( m_atom, true );
// Announce support by creating a dummy version on the root window
unsigned char dummy = 0;
XChangeProperty( display(), rootWindow(), m_atom, m_atom, 8, PropModeReplace, &dummy, 1 );
}
HighlightWindowEffect::~HighlightWindowEffect()
{
XDeleteProperty( display(), rootWindow(), m_atom );
effects->registerPropertyType( m_atom, false );
}
void HighlightWindowEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
{
// Calculate window opacities
if( !m_highlightedWindows.isEmpty() )
{ // Initial fade out and changing highlight animation
double oldOpacity = m_windowOpacity[w];
if( m_highlightedWindows.contains( w ) )
m_windowOpacity[w] = qMin( 1.0, m_windowOpacity[w] + time / m_fadeDuration );
else if( w->isNormalWindow() || w->isDialog() ) // Only fade out windows
m_windowOpacity[w] = qMax( 0.15, m_windowOpacity[w] - time / m_fadeDuration );
if( m_windowOpacity[w] != 1.0 )
data.setTranslucent();
if( oldOpacity != m_windowOpacity[w] )
w->addRepaintFull();
}
else if( m_finishing && m_windowOpacity.contains( w ))
{ // Final fading back in animation
double oldOpacity = m_windowOpacity[w];
m_windowOpacity[w] = qMin( 1.0, m_windowOpacity[w] + time / m_fadeDuration );
if( m_windowOpacity[w] != 1.0 )
data.setTranslucent();
if( oldOpacity != m_windowOpacity[w] )
w->addRepaintFull();
if( m_windowOpacity[w] == 1.0 )
m_windowOpacity.remove( w ); // We default to 1.0
}
effects->prePaintWindow( w, data, time );
}
void HighlightWindowEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
{
if( m_windowOpacity.contains( w ))
data.opacity *= m_windowOpacity[w];
effects->paintWindow( w, mask, region, data );
}
void HighlightWindowEffect::windowAdded( EffectWindow* w )
{
if( !m_highlightedWindows.isEmpty() )
{ // The effect is activated thus we need to add it to the opacity hash
if( w->isNormalWindow() || w->isDialog() ) // Only fade out windows
m_windowOpacity[w] = 0.15;
else
m_windowOpacity[w] = 1.0;
}
propertyNotify( w, m_atom ); // Check initial value
}
void HighlightWindowEffect::windowClosed( EffectWindow* w )
{
if( m_monitorWindow == w ) // The monitoring window was destroyed
finishHighlighting();
}
void HighlightWindowEffect::windowDeleted( EffectWindow* w )
{
m_windowOpacity.remove( w );
}
void HighlightWindowEffect::propertyNotify( EffectWindow* w, long a )
{
if( a != m_atom )
return; // Not our atom
QByteArray byteData = w->readProperty( m_atom, m_atom, 32 );
if( byteData.length() < 1 )
{ // Property was removed, clearing highlight
finishHighlighting();
return;
}
long* data = reinterpret_cast<long*>( byteData.data() );
if( !data[0] )
{ // Purposely clearing highlight by issuing a NULL target
finishHighlighting();
return;
}
m_monitorWindow = w;
bool found = false;
int length = byteData.length() / sizeof( data[0] );
for( int i=0; i<length; i++ )
{
EffectWindow* foundWin = effects->findWindow( data[i] );
if( !foundWin )
{
kDebug(1212) << "Invalid window targetted for highlight. Requested:" << data[i];
continue;
}
if( foundWin->isOnCurrentDesktop() && !foundWin->isMinimized() )
m_highlightedWindows.append( foundWin );
found = true;
}
if( !found )
return;
prepareHighlighting();
m_windowOpacity[w] = 1.0; // Because it's not in stackingOrder() yet
/* TODO: Finish thumbnails of offscreen windows, not sure if it's worth it though
if( !m_highlightedWindow->isOnCurrentDesktop() )
{ // Window is offscreen, determine thumbnail position
QRect screenArea = effects->clientArea( MaximizeArea ); // Workable area of the active screen
QRect outerArea = outerArea.adjusted( outerArea.width() / 10, outerArea.height() / 10,
-outerArea.width() / 10, -outerArea.height() / 10 ); // Add 10% margin around the edge
QRect innerArea = outerArea.adjusted( outerArea.width() / 40, outerArea.height() / 40,
-outerArea.width() / 40, -outerArea.height() / 40 ); // Outer edge of the thumbnail border (2.5%)
QRect thumbArea = outerArea.adjusted( 20, 20, -20, -20 ); // Outer edge of the thumbnail (20px)
// Determine the maximum size that we can make the thumbnail within the innerArea
double areaAspect = double( thumbArea.width() ) / double( thumbArea.height() );
double windowAspect = aspectRatio( m_highlightedWindow );
QRect thumbRect; // Position doesn't matter right now, but it will later
if( windowAspect > areaAspect )
// Top/bottom will touch first
thumbRect = QRect( 0, 0, widthForHeight( thumbArea.height() ), thumbArea.height() );
else // Left/right will touch first
thumbRect = QRect( 0, 0, thumbArea.width(), heightForWidth( thumbArea.width() ));
if( thumbRect.width() >= m_highlightedWindow->width() )
// Area is larger than the window, just use the window's size
thumbRect = m_highlightedWindow->geometry();
// Determine position of desktop relative to the current one
QPoint direction = effects->desktopGridCoords( m_highlightedWindow->desktop() ) -
effects->desktopGridCoords( effects->currentDesktop() );
// Draw a line from the center of the current desktop to the center of the target desktop.
QPointF desktopLine( 0, 0, direction.x() * screenArea.width(), direction.y() * screenArea.height() );
desktopLeft.translate( screenArea.width() / 2, screenArea.height() / 2 ); // Move to the screen center
// Take the point where the line crosses the outerArea, this will be the tip of our arrow
QPointF arrowTip;
QLineF testLine( // Top
outerArea.x(), outerArea.y(),
outerArea.x() + outerArea.width(), outerArea.y() );
if( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
{
testLine = QLineF( // Right
outerArea.x() + outerArea.width(), outerArea.y(),
outerArea.x() + outerArea.width(), outerArea.y() + outerArea.height() );
if( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
{
testLine = QLineF( // Bottom
outerArea.x() + outerArea.width(), outerArea.y() + outerArea.height(),
outerArea.x(), outerArea.y() + outerArea.height() );
if( desktopLine.intersect( testLine, &arrowTip ) != QLineF::BoundedIntersection )
{
testLine = QLineF( // Left
outerArea.x(), outerArea.y() + outerArea.height(),
outerArea.x(), outerArea.y() );
desktopLine.intersect( testLine, &arrowTip ); // Should never fail
}
}
}
m_arrowTip = arrowTip.toPoint();
} */
}
void HighlightWindowEffect::prepareHighlighting()
{
// Create window data for every window. Just calling [w] creates it.
m_finishing = false;
foreach( EffectWindow *w, effects->stackingOrder() )
if( !m_windowOpacity.contains( w )) // Just in case we are still finishing from last time
m_windowOpacity[w] = 1.0;
}
void HighlightWindowEffect::finishHighlighting()
{
m_finishing = true;
m_monitorWindow = NULL;
m_highlightedWindows.clear();
}
} // namespace