kwin/effects/highlightwindow/highlightwindow.cpp
Lucas Murray dd28e15a1b Allow desktop effects to access the new DesktopLayout class. Replaced
all code that used calcDesktopLayout() so the function could be removed.
Minor changes to the DesktopLayout class itself.

svn path=/trunk/KDE/kdebase/workspace/; revision=925930
2009-02-14 14:49:46 +00:00

216 lines
8.7 KiB
C++

/********************************************************************
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_highlightedWindow( NULL )
, 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_highlightedWindow )
{ // Initial fade out and changing highlight animation
double oldOpacity = m_windowOpacity[w];
if( m_highlightedWindow == w )
m_windowOpacity[w] = qMin( 1.0, m_windowOpacity[w] + time / m_fadeDuration );
else if( w->isNormalWindow() ) // Only fade out normal 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_highlightedWindow )
{ // The effect is activated thus we need to add it to the opacity hash
if( w->isNormalWindow() ) // Only fade out normal 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;
m_highlightedWindow = effects->findWindow( data[0] );
if( !m_highlightedWindow )
{
kDebug(1212) << "Invalid window targetted for highlight. Requested:" << data[0];
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_highlightedWindow = NULL;
}
} // namespace