Outline effect to replace rendering of the outline

It just uses the selection of the EffectFrame for the outline.
FEATURE: 247316
FIXED-IN: 4.7.0

effects/CMakeLists.txt

@@ -69,6 +69,7 @@ include( login/CMakeLists.txt )
 include( magiclamp/CMakeLists.txt )
 include( translucency/CMakeLists.txt )
 include( minimizeanimation/CMakeLists.txt )
+include( outline/CMakeLists.txt )
 include( presentwindows/CMakeLists.txt )
 include( resize/CMakeLists.txt )
 include( scalein/CMakeLists.txt )

effects/outline/CMakeLists.txt

@@ -0,0 +1,12 @@
+#######################################
+# Effect
+
+# Source files
+set( kwin4_effect_builtins_sources ${kwin4_effect_builtins_sources}
+    outline/outline.cpp
+    )
+
+# .desktop files
+install( FILES
+    outline/outline.desktop
+    DESTINATION ${SERVICES_INSTALL_DIR}/kwin )

effects/outline/outline.cpp

@@ -0,0 +1,78 @@
+/********************************************************************
+ KWin - the KDE window manager
+ This file is part of the KDE project.
+
+Copyright (C) 2011 Martin Gräßlin <mgraesslin@kde.org>
+
+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 "outline.h"
+
+namespace KWin
+{
+
+KWIN_EFFECT(outline, OutlineEffect)
+
+OutlineEffect::OutlineEffect()
+    : Effect()
+    , m_active(false)
+{
+    m_outline = effects->effectFrame(EffectFrameNone);
+    connect(effects, SIGNAL(showOutline(const QRect&)), SLOT(slotShowOutline(const QRect&)));
+    connect(effects, SIGNAL(hideOutline()), SLOT(slotHideOutline()));
+}
+
+OutlineEffect::~OutlineEffect()
+{
+    delete m_outline;
+}
+
+void OutlineEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
+{
+    effects->paintScreen(mask, region, data);
+    if (m_active) {
+        m_outline->render();
+    }
+}
+
+bool OutlineEffect::provides(Feature feature)
+{
+    if (feature == Outline) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+
+void OutlineEffect::slotHideOutline()
+{
+    m_active = false;
+    effects->addRepaint(m_geometry);
+}
+
+void OutlineEffect::slotShowOutline(const QRect& geometry)
+{
+    if (m_active) {
+        effects->addRepaint(m_geometry);
+    }
+    m_active = true;
+    m_geometry = geometry;
+    m_outline->setGeometry(geometry);
+    m_outline->setSelection(geometry);
+    effects->addRepaint(geometry);
+}
+
+} // namespace

effects/outline/outline.desktop

@@ -0,0 +1,17 @@
+[Desktop Entry]
+Name=Outline
+Icon=preferences-system-windows-effect-outline
+Comment=Helper effect to render an outline
+
+Type=Service
+X-KDE-ServiceTypes=KWin/Effect
+X-KDE-PluginInfo-Author=Martin Gräßlin
+X-KDE-PluginInfo-Email=mgraesslin@kde.org
+X-KDE-PluginInfo-Name=kwin4_effect_outline
+X-KDE-PluginInfo-Version=0.1.0
+X-KDE-PluginInfo-Category=Window Management
+X-KDE-PluginInfo-Depends=
+X-KDE-PluginInfo-License=GPL
+X-KDE-PluginInfo-EnabledByDefault=true
+X-KDE-Library=kwin4_effect_builtins
+X-KDE-Ordering=90

effects/outline/outline.h

@@ -0,0 +1,51 @@
+/********************************************************************
+ KWin - the KDE window manager
+ This file is part of the KDE project.
+
+Copyright (C) 2011 Martin Gräßlin <mgraesslin@kde.org>
+
+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/>.
+*********************************************************************/
+
+#ifndef KWIN_OUTLINE_H
+#define KWIN_OUTLINE_H
+
+#include <kwineffects.h>
+
+namespace KWin
+{
+
+class OutlineEffect : public Effect
+{
+    Q_OBJECT
+public:
+    OutlineEffect();
+    virtual ~OutlineEffect();
+
+    virtual void paintScreen(int mask, QRegion region, ScreenPaintData& data);
+    virtual bool provides(Feature feature);
+
+public Q_SLOTS:
+    void slotShowOutline(const QRect &geometry);
+    void slotHideOutline();
+
+private:
+    QRect m_geometry;
+    bool m_active;
+    EffectFrame *m_outline;
+};
+
+} // namespace
+
+#endif // KWIN_OUTLINE_H