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'.

2 files changed, 23 insertions, 0 deletions

diff --git a/src/views/dolphinview.cpp b/src/views/dolphinview.cpp
index f102e9acb..2b4970eeb 100644
--- a/src/views/dolphinview.cpp
+++ b/src/views/dolphinview.cpp
@@ -134,6 +134,9 @@ DolphinView::DolphinView(const QUrl& url, QWidget* parent) :
     connect(controller, &KItemListController::escapePressed, this, &DolphinView::stopLoading);
     connect(controller, &KItemListController::modelChanged, this, &DolphinView::slotModelChanged);
     connect(controller, &KItemListController::selectedItemTextPressed, this, &DolphinView::slotSelectedItemTextPressed);
+    connect(controller, &KItemListController::increaseZoom, this, &DolphinView::slotIncreaseZoom);
+    connect(controller, &KItemListController::decreaseZoom, this, &DolphinView::slotDecreaseZoom);
+    connect(controller, &KItemListController::swipeUp, this, &DolphinView::slotSwipeUp);
 
     connect(m_model, &KFileItemModel::directoryLoadingStarted,       this, &DolphinView::slotDirectoryLoadingStarted);
     connect(m_model, &KFileItemModel::directoryLoadingCompleted,     this, &DolphinView::slotDirectoryLoadingCompleted);
@@ -1954,3 +1957,18 @@ void DolphinView::copyPathToClipboard()
     }
     clipboard->setText(path);
 }
+
+void DolphinView::slotIncreaseZoom()
+{
+    setZoomLevel(zoomLevel() + 1);
+}
+
+void DolphinView::slotDecreaseZoom()
+{
+    setZoomLevel(zoomLevel() - 1);
+}
+
+void DolphinView::slotSwipeUp()
+{
+    emit goUpRequested();
+}
diff --git a/src/views/dolphinview.h b/src/views/dolphinview.h
index 50a88e936..1d0ebe0fe 100644
--- a/src/views/dolphinview.h
+++ b/src/views/dolphinview.h
@@ -582,6 +582,8 @@ signals:
      */
     void urlActivated(const QUrl& url);
 
+    void goUpRequested();
+
 protected:
     /** Changes the zoom level if Control is pressed during a wheel event. */
     void wheelEvent(QWheelEvent* event) override;
@@ -611,6 +613,9 @@ private slots:
     void slotRenameDialogRenamingFinished(const QList<QUrl>& urls);
     void slotSelectedItemTextPressed(int index);
     void slotCopyingDone(KIO::Job *, const QUrl &, const QUrl &to);
+    void slotIncreaseZoom();
+    void slotDecreaseZoom();
+    void slotSwipeUp();
 
     /*
      * Is called when new items get pasted or dropped.