Documents toolview: Remove margins in toolbar

With this patch, the toolbar of the Document's toolview has the
same height as the navbar. With KToolBar, this was unfortunately
not possible, since it seems KToolbar always adds a top margin,
this seems a bug in KToolBar.

Still, with QToolBar, no functionality should be lost.

addons/filetree/katefiletreeplugin.cpp

@@ -20,14 +20,15 @@
 #include <KConfigGroup>
 #include <KLocalizedString>
 #include <KPluginFactory>
-#include <KToolBar>
 #include <KXMLGUIFactory>
 #include <KXmlGuiWindow>
 
 #include <QAction>
 #include <QApplication>
+#include <QLayout>
 #include <QLineEdit>
 #include <QStyle>
+#include <QToolBar>
 
 #include "katefiletreedebug.h"
 
@@ -136,10 +137,11 @@ KateFileTreePluginView::KateFileTreePluginView(KTextEditor::MainWindow *mainWind
                                             i18n("Documents"));
 
     // create toolbar
-    m_toolbar = new KToolBar(m_toolView);
+    m_toolbar = new QToolBar(m_toolView);
     m_toolbar->setMovable(false);
     m_toolbar->setToolButtonStyle(Qt::ToolButtonIconOnly);
     m_toolbar->setContextMenuPolicy(Qt::NoContextMenu);
+    m_toolbar->layout()->setContentsMargins(0, 0, 0, 0);
 
     // ensure reasonable icons sizes, like e.g. the quick-open and co. icons
     // the normal toolbar sizes are TOO large, e.g. for scaled stuff even more!

addons/filetree/katefiletreeplugin.h

@@ -21,7 +21,7 @@
 
 #include <KXMLGUIClient>
 
-class KToolBar;
+class QToolBar;
 
 class KateFileTree;
 class KateFileTreeModel;
@@ -111,7 +111,7 @@ protected:
 
 private:
     QWidget *m_toolView;
-    KToolBar *m_toolbar;
+    QToolBar *m_toolbar;
     KateFileTree *m_fileTree;
     KateFileTreeProxyModel *m_proxyModel;
     QLineEdit *m_filter;