Qt: add fullscreen feature.

The feature activates/deactivates fullscreen mode of Qt UI.
A new menu item has been added as well as a shortcut (F11 or Ctrl+Cmd+F)
according to browsers common shortcut.

Change-Id: I01906b494d0a13ce70d27c00ebbe03e6ec87cbd7
Reviewed-on: https://code.wireshark.org/review/18332
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Dario Lombardo <lomato@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Roland Knall <rknall@gmail.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/ui/qt/main_window_slots.cpp b/ui/qt/main_window_slots.cpp
index 8b0b31df95..388ab77ab4 100644
--- a/ui/qt/main_window_slots.cpp
+++ b/ui/qt/main_window_slots.cpp
@@ -1394,6 +1394,9 @@ void MainWindow::applyGlobalCommandLineOptions()
             }
         }
     }
+    if (global_commandline_info.full_screen) {
+        this->showFullScreen();
+    }
 }
 
 void MainWindow::redissectPackets()
@@ -3829,6 +3832,21 @@ void MainWindow::on_actionContextFilterFieldReference_triggered()
     QDesktopServices::openUrl(dfref_url);
 }
 
+void MainWindow::on_actionViewFullScreen_triggered(bool checked)
+{
+    if (checked) {
+        // Save the state for future restore
+        was_maximized_ = this->isMaximized();
+        this->showFullScreen();
+    } else {
+        // Restore the previous state
+        if (was_maximized_)
+            this->showMaximized();
+        else
+            this->showNormal();
+    }
+}
+
 #ifdef _MSC_VER
 #pragma warning(pop)
 #endif