Designer: Cannot edit menus in an RTL form when Designer uses LTR.

Use widget->layoutDirection() instead of QApplication::layoutDirection()
where applicable, which caused it to break for the case that Designer's
layoutDirection does not match that of a widget [property].
In addition, position the submenu correctly on the left side in the case
of RTL.

Reviewed-by: Jarek Kobus <jkobus@trolltech.com>
Task-number: 259238

9 files changed, 114 insertions, 62 deletions

diff --git a/tools/designer/src/components/buddyeditor/buddyeditor.cpp b/tools/designer/src/components/buddyeditor/buddyeditor.cpp
index 9984b0d..d5c8670 100644
--- a/tools/designer/src/components/buddyeditor/buddyeditor.cpp
+++ b/tools/designer/src/components/buddyeditor/buddyeditor.cpp
@@ -404,7 +404,7 @@ QWidget *BuddyEditor::findBuddy(QLabel *l, const QWidgetList &existingBuddies) c
     const QRect geom = l->geometry();
     const int y = geom.center().y();
     QWidget *neighbour = 0;
-    switch (QApplication::layoutDirection()) {
+    switch (l->layoutDirection()) {
     case Qt::LeftToRight: { // Walk right to find next managed neighbour
         const int xEnd = parent->size().width();
         for (int x = geom.right() + 1; x < xEnd; x += DeltaX)
diff --git a/tools/designer/src/components/formeditor/default_actionprovider.cpp b/tools/designer/src/components/formeditor/default_actionprovider.cpp
index 42d1f81..41333f8 100644
--- a/tools/designer/src/components/formeditor/default_actionprovider.cpp
+++ b/tools/designer/src/components/formeditor/default_actionprovider.cpp
@@ -73,9 +73,8 @@ enum { indicatorSize = 2 };
 
 // Position an indicator horizontally over the rectangle, indicating
 // 'Insert before' (left or right according to layout direction)
-static inline QRect horizontalIndicatorRect(const QRect &rect)
+static inline QRect horizontalIndicatorRect(const QRect &rect, Qt::LayoutDirection layoutDirection)
 {
-    const Qt::LayoutDirection layoutDirection = QApplication::layoutDirection();
     // Position right?
     QRect rc = QRect(rect.x(), 0, indicatorSize, rect.height() - 1);
     if (layoutDirection == Qt::RightToLeft)
@@ -91,13 +90,13 @@ static inline QRect verticalIndicatorRect(const QRect &rect)
 
 // Determine the geometry of the indicator by retrieving
 // the action under mouse and positioning the bar within its geometry.
-QRect ActionProviderBase::indicatorGeometry(const QPoint &pos) const
+QRect ActionProviderBase::indicatorGeometry(const QPoint &pos, Qt::LayoutDirection layoutDirection) const
 {
     QAction *action = actionAt(pos);
     if (!action)
         return QRect();
     QRect rc = actionGeometry(action);
-    return orientation() == Qt::Horizontal ? horizontalIndicatorRect(rc) : verticalIndicatorRect(rc);
+    return orientation() == Qt::Horizontal ? horizontalIndicatorRect(rc, layoutDirection) : verticalIndicatorRect(rc);
 }
 
 // Adjust the indicator while dragging. (-1,1) is called to finish a DND operation
@@ -107,7 +106,7 @@ void ActionProviderBase::adjustIndicator(const QPoint &pos)
         m_indicator->hide();
         return;
     }
-    const QRect ig = indicatorGeometry(pos);
+    const QRect ig = indicatorGeometry(pos, m_indicator->layoutDirection());
     if (ig.isValid()) {
         m_indicator->setGeometry(ig);
         QPalette p = m_indicator->palette();
@@ -145,9 +144,9 @@ Qt::Orientation QToolBarActionProvider::orientation() const
     return m_widget->orientation();
 }
 
-QRect QToolBarActionProvider::indicatorGeometry(const QPoint &pos) const
+QRect QToolBarActionProvider::indicatorGeometry(const QPoint &pos, Qt::LayoutDirection layoutDirection) const
 {
-    const QRect actionRect = ActionProviderBase::indicatorGeometry(pos);
+    const QRect actionRect = ActionProviderBase::indicatorGeometry(pos, layoutDirection);
     if (actionRect.isValid())
         return actionRect;
     // Toolbar differs in that is has no dummy placeholder to 'insert before'
@@ -155,7 +154,7 @@ QRect QToolBarActionProvider::indicatorGeometry(const QPoint &pos) const
     const QRect freeArea = ToolBarEventFilter::freeArea(m_widget);
     if (!freeArea.contains(pos))
         return QRect();
-    return orientation() == Qt::Horizontal ? horizontalIndicatorRect(freeArea) : verticalIndicatorRect(freeArea);
+    return orientation() == Qt::Horizontal ? horizontalIndicatorRect(freeArea, layoutDirection) : verticalIndicatorRect(freeArea);
 }
 
 // ------------- QMenuBarActionProvider
diff --git a/tools/designer/src/components/formeditor/default_actionprovider.h b/tools/designer/src/components/formeditor/default_actionprovider.h
index 3660f11..270ea36 100644
--- a/tools/designer/src/components/formeditor/default_actionprovider.h
+++ b/tools/designer/src/components/formeditor/default_actionprovider.h
@@ -66,7 +66,7 @@ public:
     virtual Qt::Orientation orientation() const = 0;
 
 protected:
-    virtual QRect indicatorGeometry(const QPoint &pos) const;
+    virtual QRect indicatorGeometry(const QPoint &pos, Qt::LayoutDirection layoutDirection) const;
 
 private:
     QWidget *m_indicator;
@@ -84,7 +84,7 @@ public:
     Qt::Orientation orientation() const;
 
 protected:
-    virtual QRect indicatorGeometry(const QPoint &pos) const;
+    virtual QRect indicatorGeometry(const QPoint &pos, Qt::LayoutDirection layoutDirection) const;
 
 private:
     QToolBar *m_widget;
diff --git a/tools/designer/src/lib/shared/actionprovider_p.h b/tools/designer/src/lib/shared/actionprovider_p.h
index b43dee9..5f9b7a0 100644
--- a/tools/designer/src/lib/shared/actionprovider_p.h
+++ b/tools/designer/src/lib/shared/actionprovider_p.h
@@ -86,7 +86,7 @@ template <class Widget>
     // actionGeometry() can be wrong sometimes; it returns a geometry that
     // stretches to the end of the toolbar/menu bar. So, check from the beginning
     // in the case of a horizontal right-to-left orientation.
-    const bool checkTopRight = orientation == Qt::Horizontal && QApplication::layoutDirection() == Qt::RightToLeft;
+    const bool checkTopRight = orientation == Qt::Horizontal && w->layoutDirection() == Qt::RightToLeft;
     const QPoint topRight = QPoint(w->rect().width(), 0);
     for (int index = 0; index < actionCount; ++index) {
         QRect g = w->actionGeometry(actions.at(index));
diff --git a/tools/designer/src/lib/shared/qdesigner_menu.cpp b/tools/designer/src/lib/shared/qdesigner_menu.cpp
index c727d8e..6aba65b 100644
--- a/tools/designer/src/lib/shared/qdesigner_menu.cpp
+++ b/tools/designer/src/lib/shared/qdesigner_menu.cpp
@@ -73,6 +73,19 @@ QT_BEGIN_NAMESPACE
 
 using namespace qdesigner_internal;
 
+// give the user a little more space to click on the sub menu rectangle
+static inline void extendClickableArea(QRect *subMenuRect, Qt::LayoutDirection dir)
+{
+    switch (dir) {
+    case Qt::LeftToRight:
+        subMenuRect->setLeft(subMenuRect->left() - 20);
+        break;
+    case Qt::RightToLeft:
+        subMenuRect->setRight(subMenuRect->right() + 20);
+        break;
+    }
+}
+
 QDesignerMenu::QDesignerMenu(QWidget *parent) :
     QMenu(parent),
     m_currentIndex(0),
@@ -325,8 +338,7 @@ bool QDesignerMenu::handleMouseDoubleClickEvent(QWidget *, QMouseEvent *event)
     QRect pm_rect;
     if (action->menu() || hasSubMenuPixmap(action)) {
         pm_rect = subMenuPixmapRect(action);
-        pm_rect.setLeft(pm_rect.left() - 20); // give the user a little more
-                                              // space to click
+        extendClickableArea(&pm_rect, layoutDirection());
     }
 
     if (!pm_rect.contains(event->pos()) && m_currentIndex != -1)
@@ -381,7 +393,7 @@ bool QDesignerMenu::handleMousePressEvent(QWidget * /*widget*/, QMouseEvent *eve
 
     QAction *action = safeActionAt(index);
     QRect pm_rect = subMenuPixmapRect(action);
-    pm_rect.setLeft(pm_rect.left() - 20); // give the user a little more space to click
+    extendClickableArea(&pm_rect, layoutDirection());
 
     const int old_index = m_currentIndex;
     m_currentIndex = index;
@@ -540,7 +552,7 @@ QRect QDesignerMenu::subMenuPixmapRect(QAction *action) const
 {
     static const QPixmap pm(QLatin1String(":/trolltech/formeditor/images/submenu.png"));
     const QRect g = actionGeometry(action);
-    const int x = g.right() - pm.width() - 2;
+    const int x = layoutDirection() == Qt::LeftToRight ? (g.right() - pm.width() - 2) : 2;
     const int y = g.top() + (g.height() - pm.height())/2 + 1;
     return QRect(x, y, pm.width(), pm.height());
 }
@@ -863,38 +875,52 @@ void QDesignerMenu::closeMenuChain()
     m_lastSubMenuIndex = -1;
 }
 
-void QDesignerMenu::moveLeft()
+// Close submenu using the left/right keys according to layoutDirection().
+// Return false to indicate the event must be propagated to the menu bar.
+bool QDesignerMenu::hideSubMenuOnCursorKey()
 {
     if (parentMenu()) {
         hide();
-    } else {
-        closeMenuChain();
-        if (QDesignerMenuBar *mb = parentMenuBar()) {
-            if (QApplication::layoutDirection() == Qt::LeftToRight)
-                mb->moveLeft();
-            else
-                mb->moveRight();
-        }
+        return true;
     }
+    closeMenuChain();
     update();
+    if (parentMenuBar())
+        return false;
+    return true;
 }
 
-void QDesignerMenu::moveRight()
+// Open a submenu using the left/right keys according to layoutDirection().
+// Return false to indicate the event must be propagated to the menu bar.
+bool QDesignerMenu::showSubMenuOnCursorKey()
 {
-    QAction *action = currentAction();
+    const QAction *action = currentAction();
 
-    if (qobject_cast<SpecialMenuAction*>(action) || action->isSeparator()) {
+    if (qobject_cast<const SpecialMenuAction*>(action) || action->isSeparator()) {
         closeMenuChain();
-        if (QDesignerMenuBar *mb = parentMenuBar()) {
-            if (QApplication::layoutDirection() == Qt::LeftToRight)
-                mb->moveRight();
-            else
-                mb->moveLeft();
-        }
-    } else {
-        m_lastSubMenuIndex = -1; // force a refresh
-        slotShowSubMenuNow();
+        if (parentMenuBar())
+            return false;
+        return true;
     }
+    m_lastSubMenuIndex = -1; // force a refresh
+    slotShowSubMenuNow();
+    return true;
+}
+
+void QDesignerMenu::moveLeft()
+{
+    const bool handled = layoutDirection() == Qt::LeftToRight ?
+                         hideSubMenuOnCursorKey() : showSubMenuOnCursorKey();
+    if (!handled)
+        parentMenuBar()->moveLeft();
+}
+
+void QDesignerMenu::moveRight()
+{
+    const bool handled = layoutDirection() == Qt::LeftToRight ?
+                         showSubMenuOnCursorKey() : hideSubMenuOnCursorKey();
+    if (!handled)
+        parentMenuBar()->moveRight();
 }
 
 void QDesignerMenu::moveUp(bool ctrl)
@@ -1053,7 +1079,15 @@ void QDesignerMenu::slotShowSubMenuNow()
             if ((menu->windowFlags() & Qt::Popup) != Qt::Popup)
                 menu->setWindowFlags(Qt::Popup);
             const QRect g = actionGeometry(action);
-            menu->move(mapToGlobal(g.topRight()));
+            if (layoutDirection() == Qt::LeftToRight) {
+                menu->move(mapToGlobal(g.topRight()));
+            } else {
+                // The position is not initially correct due to the unknown width,
+                // causing it to overlap a bit the first time it is invoked.
+                const QSize menuSize = menu->size();
+                QPoint point = g.topLeft() - QPoint(menu->width() + 10, 0);
+                menu->move(mapToGlobal(point));
+            }
             menu->show();
             menu->setFocus();
         } else {
diff --git a/tools/designer/src/lib/shared/qdesigner_menu_p.h b/tools/designer/src/lib/shared/qdesigner_menu_p.h
index 55d8bcd..93735e6 100644
--- a/tools/designer/src/lib/shared/qdesigner_menu_p.h
+++ b/tools/designer/src/lib/shared/qdesigner_menu_p.h
@@ -181,6 +181,9 @@ protected:
     void selectCurrentAction();
 
 private:
+    bool hideSubMenuOnCursorKey();
+    bool showSubMenuOnCursorKey();
+
     QPoint m_startPosition;
     int m_currentIndex;
     QAction *m_addItem;
diff --git a/tools/designer/src/lib/shared/qdesigner_menubar.cpp b/tools/designer/src/lib/shared/qdesigner_menubar.cpp
index b53bb8d..2b19142 100644
--- a/tools/designer/src/lib/shared/qdesigner_menubar.cpp
+++ b/tools/designer/src/lib/shared/qdesigner_menubar.cpp
@@ -219,18 +219,12 @@ bool QDesignerMenuBar::handleKeyPressEvent(QWidget *, QKeyEvent *e)
 
         case Qt::Key_Left:
             e->accept();
-            if (QApplication::layoutDirection() == Qt::LeftToRight)
-                moveLeft(e->modifiers() & Qt::ControlModifier);
-            else
-                moveRight(e->modifiers() & Qt::ControlModifier);
+            moveLeft(e->modifiers() & Qt::ControlModifier);
             return true;
 
         case Qt::Key_Right:
             e->accept();
-            if (QApplication::layoutDirection() == Qt::LeftToRight)
-                moveRight(e->modifiers() & Qt::ControlModifier);
-            else
-                moveLeft(e->modifiers() & Qt::ControlModifier);
+            moveRight(e->modifiers() & Qt::ControlModifier);
             return true; // no update
 
         case Qt::Key_Up:
@@ -741,28 +735,48 @@ int QDesignerMenuBar::realActionCount() const
     return actions().count() - 1; // 1 fake actions
 }
 
-void QDesignerMenuBar::moveLeft(bool ctrl)
+bool QDesignerMenuBar::dragging() const
 {
-    if (ctrl)
-        (void) swap(m_currentIndex, m_currentIndex - 1);
-
-    m_currentIndex = qMax(0, --m_currentIndex);
-    // Always re-select, swapping destroys order
-    updateCurrentAction(true);
+    return m_dragging;
 }
 
-bool QDesignerMenuBar::dragging() const
+void QDesignerMenuBar::moveLeft(bool ctrl)
 {
-    return m_dragging;
+    if (layoutDirection() == Qt::LeftToRight) {
+        movePrevious(ctrl);
+    } else {
+        moveNext(ctrl);
+    }
 }
 
 void QDesignerMenuBar::moveRight(bool ctrl)
 {
-    if (ctrl)
-        (void) swap(m_currentIndex + 1, m_currentIndex);
+    if (layoutDirection() == Qt::LeftToRight) {
+        moveNext(ctrl);
+    } else {
+        movePrevious(ctrl);
+    }
+}
+
+void QDesignerMenuBar::movePrevious(bool ctrl)
+{
+    const bool swapped = ctrl && swapActions(m_currentIndex, m_currentIndex - 1);
+    const int newIndex = qMax(0, m_currentIndex - 1);
+    // Always re-select, swapping destroys order
+    if (swapped || newIndex != m_currentIndex) {
+        m_currentIndex = newIndex;
+        updateCurrentAction(true);
+    }
+}
 
-    m_currentIndex = qMin(actions().count() - 1, ++m_currentIndex);
-    updateCurrentAction(!ctrl);
+void QDesignerMenuBar::moveNext(bool ctrl)
+{
+    const bool swapped = ctrl && swapActions(m_currentIndex + 1, m_currentIndex);
+    const int newIndex = qMin(actions().count() - 1, m_currentIndex + 1);
+    if (swapped || newIndex != m_currentIndex) {
+        m_currentIndex = newIndex;
+        updateCurrentAction(!ctrl);
+    }
 }
 
 void QDesignerMenuBar::moveUp()
@@ -869,7 +883,7 @@ QAction *QDesignerMenuBar::safeActionAt(int index) const
     return actions().at(index);
 }
 
-bool QDesignerMenuBar::swap(int a, int b)
+bool QDesignerMenuBar::swapActions(int a, int b)
 {
     const int left = qMin(a, b);
     int right = qMax(a, b);
diff --git a/tools/designer/src/lib/shared/qdesigner_menubar_p.h b/tools/designer/src/lib/shared/qdesigner_menubar_p.h
index 97a655b..fb820e1 100644
--- a/tools/designer/src/lib/shared/qdesigner_menubar_p.h
+++ b/tools/designer/src/lib/shared/qdesigner_menubar_p.h
@@ -155,10 +155,12 @@ protected:
 
     QAction *safeActionAt(int index) const;
 
-    bool swap(int a, int b);
+    bool swapActions(int a, int b);
 
 private:
     void updateCurrentAction(bool selectAction);
+    void movePrevious(bool ctrl);
+    void moveNext(bool ctrl);
 
     QAction *m_addMenu;
     QPointer<QMenu> m_activeMenu;
diff --git a/tools/designer/src/lib/shared/qdesigner_toolbar.cpp b/tools/designer/src/lib/shared/qdesigner_toolbar.cpp
index 2693452..8c0c61d 100644
--- a/tools/designer/src/lib/shared/qdesigner_toolbar.cpp
+++ b/tools/designer/src/lib/shared/qdesigner_toolbar.cpp
@@ -466,7 +466,7 @@ QRect ToolBarEventFilter::freeArea(const QToolBar *tb)
     QRect exclusionRectangle = actionList.empty() ? handleArea(tb) : tb->actionGeometry(actionList.back());
     switch (tb->orientation()) {
     case Qt::Horizontal:
-        switch (QApplication::layoutDirection()) {
+        switch (tb->layoutDirection()) {
         case Qt::LeftToRight:
             rc.setX(exclusionRectangle.right() + 1);
             break;