Blackberry: Fix crash when opening file dialog without parent.

If parent is null, we now use qqnxintegration->primaryScreen()

This simplifies ctors of QQnxTheme and QQnxFileDialogHelper which now
receive a QQnxIntegration pointer instead of receiving a font database
and a bps event filter.

Change-Id: I3b1ed4d99f738b980a4f19a98618341a14e0c222
Reviewed-by: Kevin Krammer <kevin.krammer@kdab.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>

src/plugins/platforms/qnx/qqnxfiledialoghelper.cpp

@@ -43,6 +43,7 @@
 
 #include "qqnxbpseventfilter.h"
 #include "qqnxscreen.h"
+#include "qqnxintegration.h"
 
 #include <QDebug>
 #include <QEventLoop>
@@ -58,9 +59,9 @@
 
 QT_BEGIN_NAMESPACE
 
-QQnxFileDialogHelper::QQnxFileDialogHelper(QQnxBpsEventFilter *eventFilter)
+QQnxFileDialogHelper::QQnxFileDialogHelper(const QQnxIntegration *integration)
     : QPlatformFileDialogHelper(),
-      m_eventFilter(eventFilter),
+      m_integration(integration),
       m_dialog(0),
       m_acceptMode(QFileDialogOptions::AcceptOpen),
       m_selectedFilter(),
@@ -144,8 +145,9 @@ bool QQnxFileDialogHelper::show(Qt::WindowFlags flags, Qt::WindowModality modali
     Q_UNUSED(flags);
     qFileDialogHelperDebug() << Q_FUNC_INFO;
 
+    QQnxBpsEventFilter *eventFilter = m_integration->bpsEventFilter();
     // We *really* need the bps event filter ;)
-    if (!m_eventFilter)
+    if (!eventFilter)
         return false;
 
     // Native dialogs can only handle application modal use cases so far
@@ -208,12 +210,15 @@ bool QQnxFileDialogHelper::show(Qt::WindowFlags flags, Qt::WindowModality modali
     m_acceptMode = opts->acceptMode();
 
     // Set the libscreen window group and common properties
-    QQnxScreen *nativeScreen = static_cast<QQnxScreen *>(parent->screen()->handle());
+
+    QQnxScreen *nativeScreen = parent ? static_cast<QQnxScreen *>(parent->screen()->handle()) :
+                                        m_integration->primaryDisplay();
+    Q_ASSERT(nativeScreen);
     dialog_set_group_id(m_dialog, nativeScreen->windowGroupName());
     dialog_set_title_text(m_dialog, opts->windowTitle().toLocal8Bit().constData());
 
     // Register ourselves for dialog domain events from bps
-    m_eventFilter->registerForDialogEvents(this);
+    eventFilter->registerForDialogEvents(this);
 
     // Show the dialog
     dialog_show(m_dialog);

src/plugins/platforms/qnx/qqnxfiledialoghelper.h

@@ -48,13 +48,13 @@
 
 QT_BEGIN_NAMESPACE
 
-class QQnxBpsEventFilter;
+class QQnxIntegration;
 
 class QQnxFileDialogHelper : public QPlatformFileDialogHelper
 {
     Q_OBJECT
 public:
-    explicit QQnxFileDialogHelper(QQnxBpsEventFilter *eventFilter);
+    explicit QQnxFileDialogHelper(const QQnxIntegration *);
     ~QQnxFileDialogHelper();
 
     bool handleEvent(bps_event_t *event);
@@ -81,7 +81,7 @@ Q_SIGNALS:
 private:
     void setNameFilter(const QString &filter);
 
-    QQnxBpsEventFilter *m_eventFilter;
+    const QQnxIntegration *m_integration;
     dialog_instance_t m_dialog;
     QFileDialogOptions::AcceptMode m_acceptMode;
     QString m_selectedFilter;

src/plugins/platforms/qnx/qqnxintegration.cpp

@@ -406,7 +406,7 @@ QPlatformTheme *QQnxIntegration::createPlatformTheme(const QString &name) const
 {
     qIntegrationDebug() << Q_FUNC_INFO << "name =" << name;
     if (name == QQnxTheme::name())
-        return new QQnxTheme(m_fontDatabase, m_bpsEventFilter);
+        return new QQnxTheme(this);
     return QPlatformIntegration::createPlatformTheme(name);
 }
 #endif

src/plugins/platforms/qnx/qqnxintegration.h

@@ -128,10 +128,10 @@ public:
 
     void createDisplay(screen_display_t display, bool isPrimary);
     void removeDisplay(QQnxScreen *screen);
+    QQnxScreen *primaryDisplay() const;
 private:
     void createDisplays();
     void destroyDisplays();
-    QQnxScreen *primaryDisplay() const;
 
     static void addWindow(screen_window_t qnxWindow, QWindow *window);
     static void removeWindow(screen_window_t qnxWindow);

src/plugins/platforms/qnx/qqnxtheme.cpp

@@ -43,13 +43,11 @@
 
 #include "qqnxfiledialoghelper.h"
 #include "qqnxsystemsettings.h"
+#include "qqnxintegration.h"
 
 QT_BEGIN_NAMESPACE
 
-QQnxTheme::QQnxTheme(QPlatformFontDatabase *fontDatabase,
+QQnxTheme::QQnxTheme(const QQnxIntegration *integration) : m_integration(integration)
-                     QQnxBpsEventFilter *eventFilter)
-    : m_fontDatabase(fontDatabase),
-      m_eventFilter(eventFilter)
 {
 }
 
@@ -77,7 +75,7 @@ QPlatformDialogHelper *QQnxTheme::createPlatformDialogHelper(DialogType type) co
 {
     switch (type) {
     case QPlatformTheme::FileDialog:
-        return new QQnxFileDialogHelper(m_eventFilter);
+        return new QQnxFileDialogHelper(m_integration);
 #ifndef QT_NO_COLORDIALOG
     case QPlatformTheme::ColorDialog:
 #endif
@@ -91,8 +89,10 @@ QPlatformDialogHelper *QQnxTheme::createPlatformDialogHelper(DialogType type) co
 
 const QFont *QQnxTheme::font(Font type) const
 {
-    if (m_fonts.isEmpty() && m_fontDatabase)
+    QPlatformFontDatabase *fontDatabase = m_integration->fontDatabase();
-        m_fonts = qt_qnx_createRoleFonts(m_fontDatabase);
+
+    if (fontDatabase && m_fonts.isEmpty())
+        m_fonts = qt_qnx_createRoleFonts(fontDatabase);
     return m_fonts.value(type, 0);
 }
 

src/plugins/platforms/qnx/qqnxtheme.h

@@ -51,14 +51,12 @@
 
 QT_BEGIN_NAMESPACE
 
-class QQnxBpsEventFilter;
+class QQnxIntegration;
-
-class QPlatformFontDatabase;
 
 class QQnxTheme : public QPlatformTheme
 {
 public:
-    QQnxTheme(QPlatformFontDatabase *fontDatabase, QQnxBpsEventFilter *eventFilter);
+    explicit QQnxTheme(const QQnxIntegration *);
     ~QQnxTheme();
 
     static QString name() { return QStringLiteral("blackberry"); }
@@ -69,9 +67,8 @@ public:
     const QFont *font(Font type = SystemFont) const;
 
 private:
-    QPlatformFontDatabase *m_fontDatabase;
-    QQnxBpsEventFilter *m_eventFilter;
     mutable QHash<QPlatformTheme::Font, QFont*> m_fonts;
+    const QQnxIntegration *m_integration;
 };
 
 QT_END_NAMESPACE