You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
143 lines
3.3 KiB
143 lines
3.3 KiB
/***************************************************************** |
|
KWin - the KDE window manager |
|
This file is part of the KDE project. |
|
|
|
Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org> |
|
|
|
You can Freely distribute this program under the GNU General Public |
|
License. See the file "COPYING" for the exact licensing terms. |
|
******************************************************************/ |
|
|
|
#include "trackmouse.h" |
|
|
|
#include <config-X11.h> |
|
|
|
#include <kglobal.h> |
|
#include <kstandarddirs.h> |
|
|
|
#include <math.h> |
|
|
|
#ifdef HAVE_OPENGL |
|
#include <GL/gl.h> |
|
#endif |
|
|
|
#include <kdebug.h> |
|
|
|
namespace KWin |
|
{ |
|
|
|
KWIN_EFFECT( trackmouse, TrackMouseEffect ) |
|
|
|
const int STARS = 5; |
|
const int DIST = 50; |
|
|
|
TrackMouseEffect::TrackMouseEffect() |
|
: active( false ) |
|
, angle( 0 ) |
|
, texture( NULL ) |
|
{ |
|
} |
|
|
|
TrackMouseEffect::~TrackMouseEffect() |
|
{ |
|
delete texture; |
|
} |
|
|
|
void TrackMouseEffect::prePaintScreen( ScreenPrePaintData& data, int time ) |
|
{ |
|
if( active ) |
|
angle = ( angle + time / 10 ) % 360; |
|
effects->prePaintScreen( data, time ); |
|
} |
|
|
|
void TrackMouseEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data ) |
|
{ |
|
effects->paintScreen( mask, region, data ); // paint normal screen |
|
if( !active ) |
|
return; |
|
#ifdef HAVE_OPENGL |
|
if( texture ) |
|
{ |
|
glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT ); |
|
texture->bind(); |
|
glEnable( GL_BLEND ); |
|
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); |
|
for( int i = 0; |
|
i < STARS; |
|
++i ) |
|
{ |
|
QRect r = starRect( i ); |
|
texture->render( mask, region, r ); |
|
} |
|
texture->unbind(); |
|
glPopAttrib(); |
|
} |
|
#endif |
|
} |
|
|
|
void TrackMouseEffect::postPaintScreen() |
|
{ |
|
if( active ) |
|
{ |
|
for( int i = 0; |
|
i < STARS; |
|
++i ) |
|
effects->addRepaint( starRect( i )); |
|
} |
|
effects->postPaintScreen(); |
|
} |
|
|
|
void TrackMouseEffect::mouseChanged( const QPoint&, const QPoint&, Qt::MouseButtons, |
|
Qt::KeyboardModifiers modifiers ) |
|
{ |
|
if( modifiers == ( Qt::CTRL | Qt::META )) |
|
{ |
|
if( !active ) |
|
{ |
|
if( texture == NULL ) |
|
loadTexture(); |
|
if( texture == NULL ) |
|
return; |
|
active = true; |
|
angle = 0; |
|
} |
|
for( int i = 0; |
|
i < STARS; |
|
++i ) |
|
effects->addRepaint( starRect( i )); |
|
} |
|
else |
|
{ |
|
if( active ) |
|
{ |
|
for( int i = 0; |
|
i < STARS; |
|
++i ) |
|
effects->addRepaint( starRect( i )); |
|
active = false; |
|
} |
|
} |
|
} |
|
|
|
QRect TrackMouseEffect::starRect( int num ) const |
|
{ |
|
int a = angle + 360 / STARS * num; |
|
int x = cursorPos().x() + int( DIST * cos( a * ( 2 * M_PI / 360 ))); |
|
int y = cursorPos().y() + int( DIST * sin( a * ( 2 * M_PI / 360 ))); |
|
return QRect( QPoint( x - textureSize.width() / 2, |
|
y - textureSize.height() / 2 ), textureSize ); |
|
} |
|
|
|
void TrackMouseEffect::loadTexture() |
|
{ |
|
#ifdef HAVE_OPENGL |
|
QString file = KGlobal::dirs()->findResource( "appdata", "trackmouse.png" ); |
|
if( file.isEmpty()) |
|
return; |
|
QImage im( file ); |
|
texture = new GLTexture( im ); |
|
textureSize = im.size(); |
|
#endif |
|
} |
|
|
|
} // namespace
|
|
|