Improve Touch support

With this patch dolphin now supports the following touch gestures:

* Tap gesture to interact/open with directories, files and so on
* TapAndHold and release gesture for access to the context menu (main window, panel folder, places and information)
* TapAndHold and moving gesture for drag and drop action (main windows, panel folder and places)
* pinch gesture for zoom in main window
* kinetic scrolling (QScroller) for main window, panel folder, panel places, panel information, setting preview and service
* two fingers swipe gesture to left, right and up as shortcut to navigate back, forward and up
* two finger tap gesture to toggle item selection, similar to Ctrl and left mouse click

FEATURE: 385066
FIXED-IN: 20.11.80

 You are currently rebasing branch 'touch' on '85241a924'.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/panels/information/informationpanelcontent.h b/src/panels/information/informationpanelcontent.h
index 7b83e5d41..abdfdeb35 100644
--- a/src/panels/information/informationpanelcontent.h
+++ b/src/panels/information/informationpanelcontent.h
@@ -23,6 +23,7 @@ class QDialogButtonBox;
 class QString;
 class QLabel;
 class QScrollArea;
+class QGestureEvent;
 
 namespace KIO {
   class PreviewJob;
@@ -78,6 +79,7 @@ public:
 signals:
     void urlActivated( const QUrl& url );
     void configurationFinished();
+    void contextMenuRequested(const QPoint& pos);
 
 public slots:
     /**
@@ -90,6 +92,8 @@ protected:
     /** @see QObject::eventFilter() */
     bool eventFilter(QObject* obj, QEvent* event) override;
 
+    bool event(QEvent * event) override;
+
 private slots:
     /**
      * Is invoked if no preview is available for the item. In this
@@ -131,6 +135,8 @@ private:
      */
     void refreshPixmapView();
 
+    bool gestureEvent(QGestureEvent* event);
+
 private:
     KFileItem m_item;