Emit workAreaResized() in X11 when it changes

Emit the QDesktopWidget::workAreaResized() signal when the _NET_WORKAREA
property of the root window changes.

Merge-request: 1111
Reviewed-by: Denis Dzyubenko <denis.dzyubenko@nokia.com>

2 files changed, 6 insertions, 9 deletions

diff --git a/src/gui/kernel/qapplication_x11.cpp b/src/gui/kernel/qapplication_x11.cpp
index bf95684..c6d188b 100644
--- a/src/gui/kernel/qapplication_x11.cpp
+++ b/src/gui/kernel/qapplication_x11.cpp
@@ -3750,6 +3750,12 @@ int QApplication::x11ProcessEvent(XEvent* event)
                 qt_get_net_virtual_roots();
             } else if (event->xproperty.atom == ATOM(_NET_WORKAREA)) {
                 qt_desktopwidget_update_workarea();
+
+                // emit the workAreaResized() signal
+                QDesktopWidget *desktop = QApplication::desktop();
+                int numScreens = desktop->numScreens();
+                for (int i = 0; i < numScreens; ++i)
+                    emit desktop->workAreaResized(i);
             }
         } else if (widget) {
             widget->translatePropertyEvent(event);
diff --git a/src/gui/kernel/qdesktopwidget_x11.cpp b/src/gui/kernel/qdesktopwidget_x11.cpp
index 02a2c82..14eb976 100644
--- a/src/gui/kernel/qdesktopwidget_x11.cpp
+++ b/src/gui/kernel/qdesktopwidget_x11.cpp
@@ -384,10 +384,8 @@ void QDesktopWidget::resizeEvent(QResizeEvent *event)
     Q_D(QDesktopWidget);
     int oldScreenCount = d->screenCount;
     QVector<QRect> oldRects(oldScreenCount);
-    QVector<QRect> oldWorks(oldScreenCount);
     for (int i = 0; i < oldScreenCount; ++i) {
         oldRects[i] = d->rects[i];
-        oldWorks[i] = d->workareas[i];
     }
 
     d->init();
@@ -397,13 +395,6 @@ void QDesktopWidget::resizeEvent(QResizeEvent *event)
             emit resized(i);
     }
 
-    // ### workareas are just reset by init, not filled with new values
-    // ### so this will not work correctly
-    for (int j = 0; j < qMin(oldScreenCount, d->screenCount); ++j) {
-        if (oldWorks.at(j) != d->workareas[j])
-            emit workAreaResized(j);
-    }
-
     if (oldScreenCount != d->screenCount) {
         emit screenCountChanged(d->screenCount);
     }