From f9672ff39472d92be20fe7f262d54718f4220a63 Mon Sep 17 00:00:00 2001
From: Marco Martin <notmart@gmail.com>
Date: Sat, 31 Oct 2009 10:58:06 +0000
Subject: [PATCH] new effect: highlightWindows, uses _KDE_WINDOW_HIGHLIGHT atom

svn path=/trunk/KDE/kdelibs/; revision=1042972
---
 windoweffects.cpp | 35 +++++++++++++++++++++++++++++++++++
 windoweffects.h   | 24 ++++++++++++++++++------
 2 files changed, 53 insertions(+), 6 deletions(-)

diff --git a/windoweffects.cpp b/windoweffects.cpp
index aac872313..29009757a 100644
--- a/windoweffects.cpp
+++ b/windoweffects.cpp
@@ -56,6 +56,9 @@ bool isEffectAvailable(Effect effect)
     case PresentWindowsGroup:
         effectName = "_KDE_PRESENT_WINDOWS_GROUP";
         break;
+    case HighlightWindows:
+        effectName = "_KDE_WINDOW_HIGHLIGHT";
+        break;
     default:
         return false;
     }
@@ -242,6 +245,38 @@ void presentWindows(WId controler, int desktop)
 #endif
 }
 
+void highlightWindows(WId controller, const QList<WId> &ids)
+{
+#ifdef Q_WS_X11
+    const int numWindows = ids.count();
+    Display *dpy = QX11Info::display();
+    Atom atom = XInternAtom(dpy, "_KDE_WINDOW_HIGHLIGHT", False);
+
+    if (numWindows == 0) {
+        Atom atom = XInternAtom(dpy, "_KDE_WINDOW_HIGHLIGHT", False);
+        XDeleteProperty(dpy, controller, atom);
+    }
+
+    QVarLengthArray<long, 32> data(numWindows);
+    int actualCount = 0;
+
+    for (int i = 0; i < numWindows; ++i) {
+        data[i] = ids.at(i);
+        ++actualCount;
+
+    }
+
+    if (actualCount != numWindows) {
+        data.resize(actualCount);
+    }
+
+    if (!data.isEmpty()) {
+        XChangeProperty(dpy, controller, atom, atom, 32, PropModeReplace,
+                        reinterpret_cast<unsigned char *>(data.data()), data.size());
+    }
+#endif
+}
+
 }
 
 }
diff --git a/windoweffects.h b/windoweffects.h
index 43c4ea23d..fcb381cab 100644
--- a/windoweffects.h
+++ b/windoweffects.h
@@ -39,7 +39,8 @@ namespace WindowEffects
         Slide = 1,
         WindowPreview = 2,
         PresentWindows = 3,
-        PresentWindowsGroup = 4
+        PresentWindowsGroup = 4,
+        HighlightWindows = 5
     };
 
     /**
@@ -96,21 +97,32 @@ namespace WindowEffects
     /**
     * Activate the Present Windows effect for the given groups of windows.
     *
-    * @param controler The window which is the controler of this effect. The property
+    * @param controller The window which is the controller of this effect. The property
     *                   will be set on this window. It will be removed by the effect
     * @param ids all the windows which should be presented.
     * @since 4.4
     */
-    PLASMA_EXPORT void presentWindows(WId controler, const QList<WId> &ids);
-    /**
+    PLASMA_EXPORT void presentWindows(WId controller, const QList<WId> &ids);
+
+   /**
     * Activate the Present Windows effect for the windows of the given desktop.
     *
-    * @param controler The window which is the controler of this effect. The property
+    * @param controller The window which is the controller of this effect. The property
     *                   will be set on this window. It will be removed by the effect
     * @param desktop The desktop whose windows should be presented. -1 for all desktops
     * @since 4.4
     */
-    PLASMA_EXPORT void presentWindows(WId controler, int desktop = -1);
+    PLASMA_EXPORT void presentWindows(WId controller, int desktop = -1);
+
+   /**
+    * Highlight the selected windos, making all the others translucent
+    *
+    * @param controller The window which is the controller of this effect. The property
+    *                   will be set on this window. It will be removed by the effect
+    * @param ids all the windows which should be highlighted.
+    * @since 4.4
+    */
+    PLASMA_EXPORT void highlightWindows(WId controller, const QList<WId> &ids);
 }
 
 } // namespace Plasma