QWizard/Win: Support RTL layout in Aero style

Task-number: QTBUG-30462
Change-Id: Ie6b3ba4975542a9d92611eb9a8547215e41d3c2c
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Ahmed Saidi <justroftest@gmail.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

2 files changed, 25 insertions, 3 deletions

diff --git a/src/widgets/dialogs/qwizard.cpp b/src/widgets/dialogs/qwizard.cpp
index 72283451d7..b7a91a3d4b 100644
--- a/src/widgets/dialogs/qwizard.cpp
+++ b/src/widgets/dialogs/qwizard.cpp
@@ -3131,6 +3131,16 @@ bool QWizard::event(QEvent *event)
         d->handleAeroStyleChange();
     }
     else if (d->isVistaThemeEnabled()) {
+        if (event->type() == QEvent::Resize
+                || event->type() == QEvent::LayoutDirectionChange) {
+            const int buttonLeft = (layoutDirection() == Qt::RightToLeft
+                                    ? width() - d->vistaHelper->backButton()->sizeHint().width()
+                                    : 0);
+
+            d->vistaHelper->backButton()->move(buttonLeft,
+                                               d->vistaHelper->backButton()->y());
+        }
+
         d->vistaHelper->mouseEvent(event);
     }
 #endif
diff --git a/src/widgets/dialogs/qwizard_win.cpp b/src/widgets/dialogs/qwizard_win.cpp
index 001c21da61..b57614c018 100644
--- a/src/widgets/dialogs/qwizard_win.cpp
+++ b/src/widgets/dialogs/qwizard_win.cpp
@@ -240,7 +240,11 @@ void QVistaBackButton::paintEvent(QPaintEvent *)
     else if (underMouse())
         state = WIZ_NAV_BB_HOT;
 
-    pDrawThemeBackground(theme, hdc, WIZ_NAV_BACKBUTTON, state, &clipRect, &clipRect);
+    WIZ_NAVIGATIONPARTS buttonType = (layoutDirection() == Qt::LeftToRight
+                                      ? WIZ_NAV_BACKBUTTON
+                                      : WIZ_NAV_FORWARDBUTTON);
+
+    pDrawThemeBackground(theme, hdc, buttonType, state, &clipRect, &clipRect);
 }
 
 /******************************************************************************
@@ -385,7 +389,11 @@ void QVistaHelper::drawTitleBar(QPainter *painter)
         glowOffset = glowSize();
     }
 
-    const QRect textRectangle(titleOffset() - glowOffset, verticalCenter - textHeight / 2, textWidth, textHeight);
+    const int titleLeft = (wizard->layoutDirection() == Qt::LeftToRight
+                           ? titleOffset() - glowOffset
+                           : wizard->width() - titleOffset() - textWidth + glowOffset);
+
+    const QRect textRectangle(titleLeft, verticalCenter - textHeight / 2, textWidth, textHeight);
     if (isWindow) {
         drawTitleText(painter, text, textRectangle, hdc);
     } else {
@@ -397,7 +405,11 @@ void QVistaHelper::drawTitleBar(QPainter *painter)
 
     const QIcon windowIcon = wizard->windowIcon();
     if (!windowIcon.isNull()) {
-        const QRect rect(origin.x() + leftMargin(),
+        const int iconLeft = (wizard->layoutDirection() == Qt::LeftToRight
+                              ? leftMargin()
+                              : wizard->width() - leftMargin() - iconSize());
+
+        const QRect rect(origin.x() + iconLeft,
                          origin.y() + verticalCenter - iconSize() / 2, iconSize(), iconSize());
         const HICON hIcon = qt_pixmapToWinHICON(windowIcon.pixmap(iconSize()));
         DrawIconEx(hdc, rect.left(), rect.top(), hIcon, 0, 0, 0, NULL, DI_NORMAL | DI_COMPAT);