Fixes: Toolbar cosmetic problem

RevBy:    b_lindeijer
Details:
This resolves the problem with missing top-borders on
the find toolbar.

(cherry picked from commit e5c845fcc7)

src/plugins/coreplugin/manhattanstyle.cpp

@@ -871,10 +871,11 @@ void ManhattanStyle::drawControl(ControlElement element, const QStyleOption *opt
             painter->setPen(StyleHelper::borderColor());
 
             if (horizontal) {
-                // Note: This is a hack to determine if we are the topmost
-                // toolbar and menu bar should draw the outline
+                // Note: This is a hack to determine if the
+                // toolbar should draw the top or bottom outline
+                // (needed for the find toolbar for instance)
                 QColor lighter(255, 255, 255, 40);
-                if (widget->mapToParent(rect.topLeft()).y()) {
+                if (widget && widget->property("topBorder").toBool()) {
                     p->drawLine(rect.topLeft(), rect.topRight());
                     p->setPen(lighter);
                     p->drawLine(rect.topLeft() + QPoint(0, 1), rect.topRight() + QPoint(0, 1));

src/plugins/debugger/debuggerplugin.cpp

@@ -620,6 +620,7 @@ bool DebuggerPlugin::initialize(const QStringList &arguments, QString *error_mes
     m_debugMode->setWidget(splitter2);
 
     QToolBar *debugToolBar = new QToolBar;
+    debugToolBar->setProperty("topBorder", true);
     debugToolBar->addAction(am->command(ProjectExplorer::Constants::DEBUG)->action());
     debugToolBar->addAction(am->command(Constants::INTERRUPT)->action());
     debugToolBar->addAction(am->command(Constants::NEXT)->action());

src/plugins/find/findtoolbar.cpp

@@ -78,6 +78,7 @@ FindToolBar::FindToolBar(FindPlugin *plugin, CurrentDocumentFind *currentDocumen
     m_ui.setupUi(m_widget);
     addWidget(m_widget);
     setFocusProxy(m_ui.findEdit);
+    setProperty("topBorder", true);
 
     connect(m_ui.findEdit, SIGNAL(editingFinished()), this, SLOT(invokeResetIncrementalSearch()));
 
@@ -225,16 +226,6 @@ FindToolBar::~FindToolBar()
 {
 }
 
-void FindToolBar::paintEvent(QPaintEvent *event)
-{
-    QToolBar::paintEvent(event);
-
-    QPainter p(this);
-    const QRect r = rect();
-    p.setPen(StyleHelper::borderColor());
-    p.drawLine(r.topLeft(), r.topRight());
-}
-
 bool FindToolBar::eventFilter(QObject *obj, QEvent *event)
 {
     if ((obj == m_ui.findEdit || obj == m_findCompleter->popup())

src/plugins/find/findtoolbar.h

@@ -58,8 +58,6 @@ public:
 
     void invokeClearResults();
 
-    void paintEvent(QPaintEvent *event);
-
 private slots:
     void invokeFindNext();
     void invokeFindPrevious();