Merge remote branch 'origin/4.7' into qt-master-from-4.7

1 files changed, 40 insertions, 12 deletions

diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 920000e..6caa7ee 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -70,6 +70,10 @@
 #include "qmessagebox.h"
 #include <QtGui/qgraphicsproxywidget.h>
 
+#ifdef QT_GRAPHICSSYSTEM_RUNTIME
+#include "private/qgraphicssystem_runtime_p.h"
+#endif
+
 #include "qinputcontext.h"
 #include "qkeymapper_p.h"
 
@@ -440,6 +444,7 @@ QPalette *QApplicationPrivate::set_pal = 0;        // default palette set by pro
 
 QGraphicsSystem *QApplicationPrivate::graphics_system = 0; // default graphics system
 QString QApplicationPrivate::graphics_system_name;         // graphics system id - for delayed initialization
+bool QApplicationPrivate::runtime_graphics_system = false;
 
 Q_GLOBAL_STATIC(QMutex, applicationFontMutex)
 QFont *QApplicationPrivate::app_font = 0;        // default application font
@@ -664,7 +669,8 @@ void QApplicationPrivate::process_cmdline()
         \o  -geometry \e geometry, sets the client geometry of the first window
             that is shown.
         \o  -fn or \c -font \e font, defines the application font. The font
-            should be specified using an X logical font description.
+            should be specified using an X logical font description. Note that
+            this option is ignored when Qt is built with fontconfig support enabled.
         \o  -bg or \c -background \e color, sets the default background color
             and an application palette (light and dark shades are calculated).
         \o  -fg or \c -foreground \e color, sets the default foreground color.
@@ -772,6 +778,9 @@ void QApplicationPrivate::construct(
 
     qt_is_gui_used = (qt_appType != QApplication::Tty);
     process_cmdline();
+    // the environment variable has the lowest precedence of runtime graphicssystem switches
+    if (graphics_system_name.isEmpty())
+        graphics_system_name = QString::fromLocal8Bit(qgetenv("QT_GRAPHICSSYSTEM"));
     // Must be called before initialize()
     qt_init(this, qt_appType
 #ifdef Q_WS_X11
@@ -1552,10 +1561,18 @@ QStyle* QApplication::setStyle(const QString& style)
     on-screen widgets and QPixmaps. The available systems are \c{"native"},
     \c{"raster"} and \c{"opengl"}.
 
-    This function call overrides both the application commandline
-    \c{-graphicssystem} switch and the configure \c{-graphicssystem} switch.
+    There are several ways to set the graphics backend, in order of decreasing
+    precedence:
+    \list
+        \o the application commandline \c{-graphicssystem} switch
+        \o QApplication::setGraphicsSystem()
+        \o the QT_GRAPHICSSYSTEM environment variable
+        \o the Qt configure \c{-graphicssystem} switch
+    \endlist
+    If the highest precedence switch sets an invalid name, the error will be
+    ignored and the default backend will be used.
 
-    \warning This function must be called before the QApplication constructor
+    \warning This function is only effective before the QApplication constructor
     is called.
 
     \note The \c{"opengl"} option is currently experimental.
@@ -1563,7 +1580,14 @@ QStyle* QApplication::setStyle(const QString& style)
 
 void QApplication::setGraphicsSystem(const QString &system)
 {
-    QApplicationPrivate::graphics_system_name = system;
+#ifdef QT_GRAPHICSSYSTEM_RUNTIME
+    if (QApplicationPrivate::graphics_system_name == QLatin1String("runtime")) {
+        QRuntimeGraphicsSystem *r =
+                static_cast<QRuntimeGraphicsSystem *>(QApplicationPrivate::graphics_system);
+        r->setGraphicsSystem(system);
+    } else
+#endif
+        QApplicationPrivate::graphics_system_name = system;
 }
 
 /*!
@@ -2216,15 +2240,17 @@ void QApplication::closeAllWindows()
 {
     bool did_close = true;
     QWidget *w;
-    while((w = activeModalWidget()) && did_close) {
-        if(!w->isVisible())
+    while ((w = activeModalWidget()) && did_close) {
+        if (!w->isVisible() || w->data->is_closing)
             break;
         did_close = w->close();
     }
     QWidgetList list = QApplication::topLevelWidgets();
     for (int i = 0; did_close && i < list.size(); ++i) {
         w = list.at(i);
-        if (w->isVisible() && w->windowType() != Qt::Desktop) {
+        if (w->isVisible()
+            && w->windowType() != Qt::Desktop
+            && !w->data->is_closing) {
             did_close = w->close();
             list = QApplication::topLevelWidgets();
             i = -1;
@@ -5261,18 +5287,20 @@ bool QApplication::keypadNavigationEnabled()
     This function replaces the QInputContext instance used by the application
     with \a inputContext.
 
+    Qt takes ownership of the given \a inputContext.
+
     \sa inputContext()
 */
 void QApplication::setInputContext(QInputContext *inputContext)
 {
-    Q_D(QApplication);
-    Q_UNUSED(d);// only static members being used.
+    if (inputContext == QApplicationPrivate::inputContext)
+        return;
     if (!inputContext) {
         qWarning("QApplication::setInputContext: called with 0 input context");
         return;
     }
-    delete d->inputContext;
-    d->inputContext = inputContext;
+    delete QApplicationPrivate::inputContext;
+    QApplicationPrivate::inputContext = inputContext;
 }
 
 /*!