Android: Differ between ShowMaximized and ShowFullScreen

The default is now ShowMaximized which behaves as it did before,
i.e. each window will fill the screen but the status bar will be
visible. Calling showFullScreen() explicitly will now hide the
status bar to maximize the amount of screen real estate occupied
by the application.

Task-number: QTBUG-33135
Change-Id: If0d0a2ab72f8026e76818290e2b953dbc0dec156
Reviewed-by: BogDan Vatra <bogdan@kde.org>

3 files changed, 48 insertions, 1 deletions

diff --git a/src/plugins/platforms/android/src/raster/qandroidplatformscreen.cpp b/src/plugins/platforms/android/src/raster/qandroidplatformscreen.cpp
index 0250a6122c..2e59c307c3 100644
--- a/src/plugins/platforms/android/src/raster/qandroidplatformscreen.cpp
+++ b/src/plugins/platforms/android/src/raster/qandroidplatformscreen.cpp
@@ -43,6 +43,7 @@
 #include "qandroidplatformintegration.h"
 #include "androidjnimain.h"
 #include "androidjnimenu.h"
+#include "qandroidplatformwindow.h"
 
 QAndroidPlatformScreen::QAndroidPlatformScreen():QFbScreen()
 {
@@ -57,6 +58,12 @@ QAndroidPlatformScreen::QAndroidPlatformScreen():QFbScreen()
 void QAndroidPlatformScreen::topWindowChanged(QWindow *w)
 {
     QtAndroidMenu::setActiveTopLevelWindow(w);
+
+    if (w != 0) {
+        QAndroidPlatformWindow *platformWindow = static_cast<QAndroidPlatformWindow *>(w->handle());
+        if (platformWindow != 0)
+            platformWindow->updateStatusBarVisibility();
+    }
 }
 
 QRegion QAndroidPlatformScreen::doRedraw()
diff --git a/src/plugins/platforms/android/src/raster/qandroidplatformwindow.cpp b/src/plugins/platforms/android/src/raster/qandroidplatformwindow.cpp
index f5fce0ae34..2dedc77027 100644
--- a/src/plugins/platforms/android/src/raster/qandroidplatformwindow.cpp
+++ b/src/plugins/platforms/android/src/raster/qandroidplatformwindow.cpp
@@ -44,7 +44,9 @@
 #include "androidjnimain.h"
 #include <qpa/qwindowsysteminterface.h>
 
-QAndroidPlatformWindow::QAndroidPlatformWindow(QWindow *window) : QFbWindow(window)
+QAndroidPlatformWindow::QAndroidPlatformWindow(QWindow *window)
+    : QFbWindow(window)
+    , m_state(Qt::WindowNoState)
 {
 }
 
@@ -58,8 +60,41 @@ void QAndroidPlatformWindow::propagateSizeHints()
     //shut up warning from default implementation
 }
 
+void QAndroidPlatformWindow::updateStatusBarVisibility()
+{
+    Qt::WindowFlags flags = window()->flags();
+    bool isNonRegularWindow = flags & (Qt::Popup | Qt::Dialog | Qt::Sheet) & ~Qt::Window;
+    if (!isNonRegularWindow) {
+        if (m_state & Qt::WindowFullScreen)
+            QtAndroid::hideStatusBar();
+        else if (m_state & Qt::WindowMaximized)
+            QtAndroid::showStatusBar();
+    }
+}
+
+void QAndroidPlatformWindow::raise()
+{
+    updateStatusBarVisibility();
+    QFbWindow::raise();
+}
+
+void QAndroidPlatformWindow::setWindowState(Qt::WindowState state)
+{
+    if (m_state == state)
+        return;
+
+    m_state = state;
+    if (window()->isVisible())
+        updateStatusBarVisibility();
+
+    QFbWindow::setWindowState(state);
+}
+
 void QAndroidPlatformWindow::setVisible(bool visible)
 {
+    if (visible)
+        updateStatusBarVisibility();
+
     QFbWindow::setVisible(visible);
 
     // The Android Activity is activated before Qt is initialized, causing the application state to
diff --git a/src/plugins/platforms/android/src/raster/qandroidplatformwindow.h b/src/plugins/platforms/android/src/raster/qandroidplatformwindow.h
index 58e6451ea1..87626b982a 100644
--- a/src/plugins/platforms/android/src/raster/qandroidplatformwindow.h
+++ b/src/plugins/platforms/android/src/raster/qandroidplatformwindow.h
@@ -52,11 +52,16 @@ public:
 
     void propagateSizeHints();
 
+    void raise();
+    void setWindowState(Qt::WindowState state);
     void setVisible(bool visible);
+    void updateStatusBarVisibility();
 
 public slots:
     void setGeometry(const QRect &rect);
 
+private:
+    Qt::WindowState m_state;
 };
 
 #endif // ANDROIDPLATFORMWINDOW_H