Login effect.

svn path=/trunk/KDE/kdebase/workspace/; revision=736359

effects/CMakeLists.txt

@@ -41,6 +41,7 @@ SET(kwin4_effect_builtins_sources
     diminactive.cpp
     fade.cpp
     fallapart.cpp
+    login.cpp
     logout.cpp
     maketransparent.cpp
     minimizeanimation.cpp
@@ -58,6 +59,7 @@ install( FILES
     diminactive.desktop
     fade.desktop
     fallapart.desktop
+    login.desktop
     logout.desktop
     maketransparent.desktop
     minimizeanimation.desktop

effects/login.cpp

@@ -0,0 +1,112 @@
+/*****************************************************************
+ 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.
+******************************************************************/
+
+#include "login.h"
+
+#include <kdebug.h>
+
+namespace KWin
+{
+
+KWIN_EFFECT( login, LoginEffect )
+
+LoginEffect::LoginEffect()
+    : progress( 1 )
+    , login_window( NULL )
+    {
+    }
+
+void LoginEffect::prePaintScreen( ScreenPrePaintData& data, int time )
+    {
+    if( login_window != NULL )
+        {
+        if( progress != 1 )
+            {
+            progress = qBound( 0., progress + time / 2000., 1. );
+            if( progress == 1 )
+                {
+                login_window->unrefWindow();
+                login_window = NULL;
+                effects->prePaintScreen( data, time );
+                return;
+                }
+            }
+        }
+    effects->prePaintScreen( data, time );
+    }
+
+void LoginEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
+    {
+    if( progress != 1 && w == login_window )
+        {
+        w->enablePainting( EffectWindow::PAINT_DISABLED_BY_DELETE );
+        data.setTranslucent();
+        }
+    effects->prePaintWindow( w, data, time );
+    }
+
+void LoginEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
+    {
+    if( login_window != NULL )
+        {
+        if( progress == 1 )
+            {
+            if( w != login_window )
+                data.brightness = 0; // not visible
+            }
+        else
+            {
+            if( w == login_window )
+                data.opacity *= ( 1 - progress );
+            else
+                data.brightness *= progress;
+            }
+        }
+    effects->paintWindow( w, mask, region, data );
+    }
+
+void LoginEffect::postPaintScreen()
+    {
+    if( login_window != NULL && progress != 1 )
+        effects->addRepaintFull();
+    effects->postPaintScreen();
+    }
+
+void LoginEffect::windowAdded( EffectWindow* w )
+    {
+    if( isLoginSplash( w ))
+        {
+        login_window = w;
+        progress = 1;
+        effects->addRepaintFull();
+        }
+    }
+
+void LoginEffect::windowClosed( EffectWindow* w )
+    {
+    if( w == login_window )
+        {
+        login_window->refWindow();
+        progress = 0;
+        effects->addRepaintFull();
+        }
+    }
+
+bool LoginEffect::isLoginSplash( EffectWindow* w )
+    { // TODO there should be probably a better way (window type?)
+    if( w->windowClass() == "ksplashx ksplashx"
+        || w->windowClass() == "ksplashsimple ksplashsimple" )
+        {
+        return true;
+        }
+    return false;
+    }
+
+} // namespace

effects/login.desktop

@@ -0,0 +1,18 @@
+[Desktop Entry]
+Encoding=UTF-8
+Name=Login
+Icon=preferences-system-windows-effect-login
+Comment=Login visual effect
+
+Type=Service
+ServiceTypes=KWin/Effect
+X-KDE-PluginInfo-Author=Lubos Lunak
+X-KDE-PluginInfo-Email=l.lunak@kde.org
+X-KDE-PluginInfo-Name=kwin4_effect_login
+X-KDE-PluginInfo-Version=0.1.0
+X-KDE-PluginInfo-Category=Appearance
+X-KDE-PluginInfo-Depends=
+X-KDE-PluginInfo-License=GPL
+X-KDE-PluginInfo-EnabledByDefault=true
+X-KDE-Library=kwin4_effect_builtins
+X-Ordering=40

effects/login.h

@@ -0,0 +1,39 @@
+/*****************************************************************
+ 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_LOGIN_H
+#define KWIN_LOGIN_H
+
+#include <kwineffects.h>
+
+
+namespace KWin
+{
+
+class LoginEffect
+    : public Effect
+    {
+    public:
+        LoginEffect();
+        virtual void prePaintScreen( ScreenPrePaintData& data, int time );
+        virtual void postPaintScreen();
+        virtual void prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time );
+        virtual void paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
+        virtual void windowAdded( EffectWindow* w );
+        virtual void windowClosed( EffectWindow* w );
+    private:
+        bool isLoginSplash( EffectWindow* w );
+        double progress; // 0-1
+        EffectWindow* login_window;
+    };
+
+} // namespace
+
+#endif