Merge branch '4.5' of [email protected]:qt/qt into 4.5

Author: Jason McDonald

src/corelib/tools/qvector.h

@@ -315,7 +315,7 @@ void QVector<T>::detach_helper()
 { realloc(d->size, d->alloc); }
 template <typename T>
 void QVector<T>::reserve(int asize)
-{ if (asize > d->alloc || d->ref != 1) realloc(d->size, asize); d->capacity = 1; }
+{ if (asize > d->alloc) realloc(d->size, asize); if (d->ref == 1) d->capacity = 1; }
 template <typename T>
 void QVector<T>::resize(int asize)
 { realloc(asize, (asize > d->alloc || (!d->capacity && asize < d->size && asize < (d->alloc >> 1))) ?

src/gui/widgets/qdockarealayout.cpp

@@ -1167,7 +1167,8 @@ bool QDockAreaLayoutInfo::insertGap(QList<int> path, QLayoutItem *dockWidgetItem
 
             QDockAreaLayoutInfo *subinfo = item.subinfo;
             QLayoutItem *widgetItem = item.widgetItem;
-            QRect r = subinfo == 0 ? dockedGeometry(widgetItem->widget()) : subinfo->rect;
+            QPlaceHolderItem *placeHolderItem = item.placeHolderItem;
+            QRect r = subinfo == 0 ? widgetItem ? dockedGeometry(widgetItem->widget()) : placeHolderItem->topLevelRect : subinfo->rect;
 
             Qt::Orientation opposite = o == Qt::Horizontal ? Qt::Vertical : Qt::Horizontal;
 #ifdef QT_NO_TABBAR
@@ -1176,13 +1177,15 @@ bool QDockAreaLayoutInfo::insertGap(QList<int> path, QLayoutItem *dockWidgetItem
             QDockAreaLayoutInfo *new_info
                 = new QDockAreaLayoutInfo(sep, dockPos, opposite, tabBarShape, mainWindow);
 
+            //item become a new top-level
             item.subinfo = new_info;
             item.widgetItem = 0;
+            item.placeHolderItem = 0;
 
             QDockAreaLayoutItem new_item
                 = widgetItem == 0
                     ? QDockAreaLayoutItem(subinfo)
-                    : QDockAreaLayoutItem(widgetItem);
+                    : widgetItem ? QDockAreaLayoutItem(widgetItem) : QDockAreaLayoutItem(placeHolderItem);
             new_item.size = pick(opposite, r.size());
             new_item.pos = pick(opposite, r.topLeft());
             new_info->item_list.append(new_item);

src/opengl/qgl.cpp

@@ -3530,7 +3530,7 @@ void QGLWidget::qglColor(const QColor& c) const
     const QGLContext *ctx = QGLContext::currentContext();
     if (ctx) {
         if (ctx->format().rgba())
-            glColor4ub(c.red(), c.green(), c.blue(), c.alpha());
+            glColor4f(c.redF(), c.greenF(), c.blueF(), c.alphaF());
         else if (!d->cmap.isEmpty()) { // QGLColormap in use?
             int i = d->cmap.find(c.rgb());
             if (i < 0)

src/opengl/qpaintengine_opengl.cpp

@@ -113,11 +113,7 @@ static bool DEBUG_TEMP_FLAG;
 
 static inline void qt_glColor4ubv(unsigned char *col)
 {
-#ifdef QT_OPENGL_ES
-        glColor4f(col[0]/255.0, col[1]/255.0, col[2]/255.0, col[3]/255.0);
-#else
-        glColor4ubv(col);
-#endif
+    glColor4f(col[0]/255.0f, col[1]/255.0f, col[2]/255.0f, col[3]/255.0f);
 }
 
 struct QT_PointF {