From 82c48b13249fbcd96d8287f3cd1fdfd61802523c Mon Sep 17 00:00:00 2001
From: Thierry Bastian <thierry.bastian@nokia.com>
Date: Mon, 29 Jun 2009 15:38:06 +0200
Subject: QMenuBar: adding autotest and simplify/fix geometry calculation

---
 src/gui/widgets/qmenubar.cpp         | 21 +++++++-----------
 src/gui/widgets/qmenubar_p.h         |  3 +--
 tests/auto/qmenubar/tst_qmenubar.cpp | 43 ++++++++++++++++++++++++++++++++++++
 3 files changed, 52 insertions(+), 15 deletions(-)

diff --git a/src/gui/widgets/qmenubar.cpp b/src/gui/widgets/qmenubar.cpp
index a31dc67..5a8c0e2 100644
--- a/src/gui/widgets/qmenubar.cpp
+++ b/src/gui/widgets/qmenubar.cpp
@@ -198,8 +198,6 @@ void QMenuBarPrivate::updateGeometries()
     }
 #endif
     calcActionRects(q_width, q_start);
-    itemsWidth = q_width;
-    itemsStart = q_start;
     currentAction = 0;
 #ifndef QT_NO_SHORTCUT
     if(itemsDirty) {
@@ -271,6 +269,9 @@ QRect QMenuBarPrivate::actionRect(QAction *act) const
     if (index == -1)
         return QRect();
 
+    //makes sure the geometries are up-to-date
+    const_cast<QMenuBarPrivate*>(this)->updateGeometries();
+
     QRect ret = actionRects.at(index);
     const int fw = q->style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, q);
     ret.translate(fw, fw);
@@ -415,9 +416,9 @@ void QMenuBarPrivate::calcActionRects(int max_width, int start) const
 {
     Q_Q(const QMenuBar);
 
-    if(!itemsDirty && itemsWidth == max_width && itemsStart == start) {
+    if(!itemsDirty)
         return;
-    }
+
     //let's reinitialize the buffer
     actionRects.resize(actions.count());
     actionRects.fill(QRect());
@@ -1658,17 +1659,11 @@ QSize QMenuBar::sizeHint() const
     int fw = style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, this);
     int spaceBelowMenuBar = style()->styleHint(QStyle::SH_MainWindow_SpaceBelowMenuBar, 0, this);
     if(as_gui_menubar) {
-        QMap<QAction*, QRect> actionRects;
-        QList<QAction*> actionList;
         const int w = parentWidget() ? parentWidget()->width() : QApplication::desktop()->width();
         d->calcActionRects(w - (2 * fw), 0);
-        for (QMap<QAction*, QRect>::const_iterator i = actionRects.constBegin();
-             i != actionRects.constEnd(); ++i) {
-            QRect actionRect(i.value());
-            if(actionRect.x() + actionRect.width() > ret.width())
-                ret.setWidth(actionRect.x() + actionRect.width());
-            if(actionRect.y() + actionRect.height() > ret.height())
-                ret.setHeight(actionRect.y() + actionRect.height());
+        for (int i = 0; i < d->actionRects.count(); ++i) {
+            const QRect &actionRect = d->actionRects.at(i);
+            ret = ret.expandedTo(QSize(actionRect.x() + actionRect.width(), actionRect.y() + actionRect.height()));
         }
         ret += QSize(2*fw + 2*hmargin, 2*fw + 2*vmargin);
     }
diff --git a/src/gui/widgets/qmenubar_p.h b/src/gui/widgets/qmenubar_p.h
index 5b209b2..bac1912 100644
--- a/src/gui/widgets/qmenubar_p.h
+++ b/src/gui/widgets/qmenubar_p.h
@@ -69,7 +69,7 @@ class QMenuBarPrivate : public QWidgetPrivate
 {
     Q_DECLARE_PUBLIC(QMenuBar)
 public:
-    QMenuBarPrivate() : itemsDirty(0), itemsWidth(0), itemsStart(-1), currentAction(0), mouseDown(0),
+    QMenuBarPrivate() : itemsDirty(0), currentAction(0), mouseDown(0),
                          closePopupMode(0), defaultPopDown(1), popupState(0), keyboardState(0), altPressed(0),
                          nativeMenuBar(-1)
 #ifdef Q_WS_MAC
@@ -95,7 +95,6 @@ public:
 
     //item calculations
     uint itemsDirty : 1;
-    int itemsWidth, itemsStart;
 
     QVector<int> shortcutIndexMap;
     mutable QVector<QRect> actionRects;
diff --git a/tests/auto/qmenubar/tst_qmenubar.cpp b/tests/auto/qmenubar/tst_qmenubar.cpp
index 8a38782..f6f5873 100644
--- a/tests/auto/qmenubar/tst_qmenubar.cpp
+++ b/tests/auto/qmenubar/tst_qmenubar.cpp
@@ -50,6 +50,7 @@
 #include <qstyle.h>
 #include <qdesktopwidget.h>
 #include <qaction.h>
+#include <qstyleoption.h>
 
 #ifdef Q_WS_WIN
 #include <windows.h>
@@ -150,6 +151,7 @@ private slots:
     void check_menuPosition();
     void task223138_triggered();
     void task256322_highlight();
+    void menubarSizeHint();
     
 #if defined(QT3_SUPPORT)
     void indexBasedInsertion_data();
@@ -1556,6 +1558,47 @@ void tst_QMenuBar::task256322_highlight()
     QVERIFY(!win.menuBar()->activeAction());
 }
 
+void tst_QMenuBar::menubarSizeHint()
+{
+    QMenuBar mb;
+    //this is a list of arbitrary strings so that we check the geometry
+    QStringList list = QStringList() << "trer" << "ezrfgtgvqd" << "sdgzgzerzerzer" << "eerzertz"  << "er";
+    foreach(QString str, list)
+        mb.addAction(str);
+
+    int left, top, right, bottom;
+    mb.getContentsMargins(&left, &top, &right, &bottom);
+    const int panelWidth = mb.style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, &mb);
+
+    mb.show();
+    QRect result;
+    foreach(QAction *action, mb.actions()) {
+        result |= mb.actionGeometry(action);
+        QCOMPARE(result.x(), left + panelWidth);
+        QCOMPARE(result.y(), top + panelWidth);
+    }
+
+    //this code is copied from QMenuBar
+    //there is no public member that allows to initialize a styleoption instance
+    QStyleOptionMenuItem opt;
+    opt.rect = mb.rect();
+    opt.menuRect = mb.rect();
+    opt.state = QStyle::State_None;
+    opt.menuItemType = QStyleOptionMenuItem::Normal;
+    opt.checkType = QStyleOptionMenuItem::NotCheckable;
+    opt.palette = mb.palette();
+
+    QSize resSize = QSize(result.x(), result.y()) + result.size()
+        + QSize(right + panelWidth, top + panelWidth);
+
+
+    resSize = mb.style()->sizeFromContents(QStyle::CT_MenuBar, &opt,
+                                         resSize.expandedTo(QApplication::globalStrut()),
+                                         &mb);
+
+    QCOMPARE(resSize, mb.sizeHint());
+}
+
 
 #if defined(QT3_SUPPORT)
 void tst_QMenuBar::indexBasedInsertion_data()
-- 
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