Add effect that highlights the mouse when one

presses left and right mouse button. There needs to be
found a better way of activating this though :-/.


svn path=/branches/work/kwin_composite/; revision=654750

CMakeLists.txt

@@ -97,8 +97,6 @@ install(TARGETS kwin DESTINATION bin)
 install( FILES kwin.kcfg  DESTINATION  ${KCFG_INSTALL_DIR} )
 install( FILES kwin.notifyrc  DESTINATION  ${DATA_INSTALL_DIR}/kwin )
 
-install( FILES effects/data/explosion.frag effects/data/explosion.vert effects/data/explosion-start.png effects/data/explosion-end.png   DESTINATION  ${DATA_INSTALL_DIR}/kwin )
-
 kde4_install_icons( ${ICON_INSTALL_DIR} )
 
 

COMPOSITE_TODO

@@ -245,3 +245,7 @@ Effects TODO
     - or whatever
 
 * DimInactive flickers when switching between windows (temporarily no window becomes active)
+
++ TrackMouse needs a better way of activating
+    - LMB+RMB is problematic, some systems handle that as MMB, and LMB+RMB press is still
+        two consequent events

effects/CMakeLists.txt

@@ -41,13 +41,23 @@ if(OPENGL_FOUND)
     SET(kwin4_effect_builtins_sources ${kwin4_effect_builtins_sources}
         magnifier.cpp
         shadow.cpp
+        trackmouse.cpp
         wavywindows.cpp
         )
     install( FILES
         magnifier.desktop
         shadow.desktop
+        trackmouse.desktop
         wavywindows.desktop
         DESTINATION ${DATA_INSTALL_DIR}/kwin/effects )
+
+    install( FILES
+        data/trackmouse.png
+        data/explosion.frag
+        data/explosion.vert
+        data/explosion-start.png
+        data/explosion-end.png
+        DESTINATION  ${DATA_INSTALL_DIR}/kwin )
 endif(OPENGL_FOUND)
 
 if (X11_Xrender_FOUND)
@@ -108,3 +118,4 @@ if( HAVE_CAPTURY )
     target_link_libraries(kwin4_effect_videorecord ${CAPTURY_LDFLAGS})
     install( FILES videorecord.desktop DESTINATION ${DATA_INSTALL_DIR}/kwin/effects )
 endif( HAVE_CAPTURY )
+

effects/trackmouse.cpp

@@ -0,0 +1,162 @@
+/*****************************************************************
+ 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 <config.h>
+
+#include "trackmouse.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( int* mask, QRegion* region, int time )
+    {
+    if( active )
+        angle = ( angle + time / 10 ) % 360;
+    effects->prePaintScreen( mask, region, 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 );
+            glEnableClientState( GL_VERTEX_ARRAY );
+            int verts[ 4 * 2 ] =
+                {
+                r.x(), r.y(),
+                r.x(), r.y() + r.height(),
+                r.x() + r.width(), r.y() + r.height(),
+                r.x() + r.width(), r.y()
+                };
+            glVertexPointer( 2, GL_INT, 0, verts );
+            glEnableClientState( GL_TEXTURE_COORD_ARRAY );
+            int texcoords[ 4 * 2 ] =
+                {
+                0, 1,
+                0, 0,
+                1, 0,
+                1, 1
+                };
+            glTexCoordPointer( 2, GL_INT, 0, texcoords );
+            glDrawArrays( GL_QUADS, 0, 4 );
+            glDisableClientState( GL_TEXTURE_COORD_ARRAY );
+            glDisableClientState( GL_VERTEX_ARRAY );
+            }
+        texture->unbind();
+        glPopAttrib();
+        }
+#endif
+    }
+
+void TrackMouseEffect::postPaintScreen()
+    {
+    if( active )
+        {
+        for( int i = 0;
+             i < STARS;
+             ++i )
+            effects->addRepaint( starRect( i ));
+        }
+    effects->postPaintScreen();
+    }
+
+void TrackMouseEffect::cursorMoved( const QPoint&, Qt::MouseButtons buttons )
+    {
+    if( buttons == ( Qt::LeftButton | Qt::RightButton ))
+        {
+        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

effects/trackmouse.desktop

@@ -0,0 +1,4 @@
+[Desktop Entry]
+Encoding=UTF-8
+Name=TrackMouse
+X-KDE-Library=kwin4_effect_builtins

effects/trackmouse.h

@@ -0,0 +1,41 @@
+/*****************************************************************
+ KWin - the KDE window manager
+ This file is part of the KDE project.
+
+Copyright (C) 2007 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.
+******************************************************************/
+
+#ifndef KWIN_TRACKMOUSE_H
+#define KWIN_TRACKMOUSE_H
+
+#include <kwineffects.h>
+#include <kwinglutils.h>
+
+namespace KWin
+{
+
+class TrackMouseEffect
+    : public Effect
+    {
+    public:
+        TrackMouseEffect();
+        virtual ~TrackMouseEffect();
+        virtual void prePaintScreen( int* mask, QRegion* region, int time );
+        virtual void paintScreen( int mask, QRegion region, ScreenPaintData& data );
+        virtual void postPaintScreen();
+        virtual void cursorMoved( const QPoint& pos, Qt::MouseButtons buttons );
+    private:
+        QRect starRect( int num ) const;
+        void loadTexture();
+        bool active;
+        int angle;
+        GLTexture* texture;
+        QSize textureSize;
+    };
+
+} // namespace
+
+#endif