Implement alertion state for windows.

Add QWindow::alert() and QPlatformWindow::setAlertState().
Add logic to clear alertion state when the window becomes
active. The platform plugins then only need to implement a setter
and a cheap getter and need not handle activation.

Prototypically implement X11 and Windows.

Task-number: QTBUG-30416
Change-Id: Ia70c4722d812462a21f4034b7d52735c9f2bc49c
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/src/gui/kernel/qplatformwindow.cpp b/src/gui/kernel/qplatformwindow.cpp
index bfb6ab5a68..1e8ac60cca 100644
--- a/src/gui/kernel/qplatformwindow.cpp
+++ b/src/gui/kernel/qplatformwindow.cpp
@@ -463,6 +463,32 @@ QString QPlatformWindow::formatWindowTitle(const QString &title, const QString &
 }
 
 /*!
+    Reimplement this method to set whether the window demands attention
+    (for example, by flashing the taskbar icon) depending on \a enabled.
+
+    \sa isAlertState()
+    \since 5.1
+*/
+
+void QPlatformWindow::setAlertState(bool enable)
+{
+    Q_UNUSED(enable)
+}
+
+/*!
+    Reimplement this method return whether the window is in
+    an alert state.
+
+    \sa setAlertState()
+    \since 5.1
+*/
+
+bool QPlatformWindow::isAlertState() const
+{
+    return false;
+}
+
+/*!
     Helper function to get initial geometry on windowing systems which do not
     do smart positioning and also do not provide a means of centering a
     transient window w.r.t. its parent. For example this is useful on Windows