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, 6 insertions, 0 deletions

diff --git a/src/settings/general/previewssettingspage.cpp b/src/settings/general/previewssettingspage.cpp
index c2f21dfab..a41515c25 100644
--- a/src/settings/general/previewssettingspage.cpp
+++ b/src/settings/general/previewssettingspage.cpp
@@ -19,6 +19,7 @@
 #include <QLabel>
 #include <QListView>
 #include <QPainter>
+#include <QScroller>
 #include <QShowEvent>
 #include <QSortFilterProxyModel>
 #include <QSpinBox>
@@ -42,6 +43,7 @@ PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
     QLabel* showPreviewsLabel = new QLabel(i18nc("@title:group", "Show previews in the view for:"), this);
 
     m_listView = new QListView(this);
+    QScroller::grabGesture(m_listView->viewport(), QScroller::TouchGesture);
 
     ServiceItemDelegate* delegate = new ServiceItemDelegate(m_listView, m_listView);
     connect(delegate, &ServiceItemDelegate::requestServiceConfiguration,
@@ -56,6 +58,7 @@ PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
     m_listView->setModel(proxyModel);
     m_listView->setItemDelegate(delegate);
     m_listView->setVerticalScrollMode(QListView::ScrollPerPixel);
+    m_listView->setUniformItemSizes(true);
 
     QLabel* localFileSizeLabel = new QLabel(i18n("Skip previews for local files above:"), this);
 
diff --git a/src/settings/services/servicessettingspage.cpp b/src/settings/services/servicessettingspage.cpp
index 6ce5e1fc9..fa064d8a1 100644
--- a/src/settings/services/servicessettingspage.cpp
+++ b/src/settings/services/servicessettingspage.cpp
@@ -23,6 +23,7 @@
 #include <QGridLayout>
 #include <QLabel>
 #include <QListWidget>
+#include <QScroller>
 #include <QShowEvent>
 #include <QSortFilterProxyModel>
 #include <QLineEdit>
@@ -56,6 +57,8 @@ ServicesSettingsPage::ServicesSettingsPage(QWidget* parent) :
     });
 
     m_listView = new QListView(this);
+    QScroller::grabGesture(m_listView->viewport(), QScroller::TouchGesture);
+
     auto *delegate = new ServiceItemDelegate(m_listView, m_listView);
     m_serviceModel = new ServiceModel(this);
     m_sortModel = new QSortFilterProxyModel(this);