feat: touchscreen support

Change-Id: Ica912c5e672d0e02f6e9540fd95d12d916dd5d74

frame/item/appitem.cpp

@@ -290,6 +290,11 @@ void AppItem::mouseReleaseEvent(QMouseEvent *e)
     if (e->button() == Qt::MiddleButton) {
         m_itemEntryInter->NewInstance(QX11Info::getTimestamp());
     } else if (e->button() == Qt::LeftButton) {
+        if (checkAndResetTapHoldGestureState()) {
+            qDebug() << "tap and hold gesture detected, ignore the synthesized mouse release event";
+            return;
+        }
+
         qDebug() << "app item clicked, name:" << m_itemEntryInter->name()
             << "id:" << m_itemEntryInter->id() << "my-id:" << m_id << "icon:" << m_itemEntryInter->icon();
 

frame/item/dockitem.cpp

@@ -35,6 +35,7 @@ DockItem::DockItem(QWidget *parent)
     : QWidget(parent),
       m_hover(false),
       m_popupShown(false),
+      m_tapAndHold(false),
 
       m_hoverEffect(new HoverHighlightEffect(this)),
 
@@ -65,6 +66,8 @@ DockItem::DockItem(QWidget *parent)
 
     connect(m_popupTipsDelayTimer, &QTimer::timeout, this, &DockItem::showHoverTips);
     connect(m_popupAdjustDelayTimer, &QTimer::timeout, this, &DockItem::updatePopupPosition, Qt::QueuedConnection);
+
+    grabGesture(Qt::TapAndHoldGesture);
 }
 
 DockItem::~DockItem()
@@ -83,6 +86,21 @@ void DockItem::setDockDisplayMode(const DisplayMode mode)
     DockDisplayMode = mode;
 }
 
+void DockItem::gestureEvent(QGestureEvent *event)
+{
+    if (!event)
+        return;
+
+    QGesture *gesture = event->gesture(Qt::TapAndHoldGesture);
+
+    if (!gesture)
+        return;
+
+    qDebug() << "got TapAndHoldGesture";
+
+    m_tapAndHold = true;
+}
+
 bool DockItem::event(QEvent *event)
 {
     if (m_popupShown)
@@ -97,6 +115,9 @@ bool DockItem::event(QEvent *event)
         }
     }
 
+    if (event->type() == QEvent::Gesture)
+        gestureEvent(static_cast<QGestureEvent*>(event));
+
     return QWidget::event(event);
 }
 
@@ -307,6 +328,18 @@ QWidget *DockItem::popupTips()
     return nullptr;
 }
 
+/*!
+ * \brief DockItem::checkAndResetTapHoldGestureState checks if a QTapAndHoldGesture
+ * happens during the mouse press and release event pair.
+ * \return true if yes, otherwise false.
+ */
+bool DockItem::checkAndResetTapHoldGestureState()
+{
+    bool ret = m_tapAndHold;
+    m_tapAndHold = false;
+    return ret;
+}
+
 const QPoint DockItem::popupMarkPoint() const
 {
     QPoint p(topleftPoint());

frame/item/dockitem.h

@@ -28,6 +28,7 @@
 
 #include <QFrame>
 #include <QPointer>
+#include <QGestureEvent>
 
 #include <memory>
 
@@ -88,6 +89,9 @@ protected:
     virtual const QString contextMenu() const;
     virtual QWidget *popupTips();
 
+    bool checkAndResetTapHoldGestureState();
+    virtual void gestureEvent(QGestureEvent *event);
+
 protected slots:
     void showContextMenu();
     void onContextMenuAccepted();
@@ -98,6 +102,7 @@ private:
 protected:
     bool m_hover;
     bool m_popupShown;
+    bool m_tapAndHold;
 
     QPointer<QWidget> m_lastPopupWidget;
     QPointer<HoverHighlightEffect> m_hoverEffect;

frame/item/launcheritem.cpp

@@ -87,20 +87,17 @@ void LauncherItem::mousePressEvent(QMouseEvent *e)
 {
     hidePopup();
 
-    if (e->button() == Qt::RightButton/* && !perfectIconRect().contains(e->pos())*/)
-        return QWidget::mousePressEvent(e);
+    return QWidget::mousePressEvent(e);
+}
 
+void LauncherItem::mouseReleaseEvent(QMouseEvent *e)
+{
     if (e->button() != Qt::LeftButton)
         return;
 
-    QProcess *proc = new QProcess;
-
-    connect(proc, static_cast<void (QProcess::*)(int)>(&QProcess::finished), proc, &QProcess::deleteLater);
-
     if (!m_launcherInter->IsVisible()) {
         m_launcherInter->Show();
     }
-
 }
 
 QWidget *LauncherItem::popupTips()

frame/item/launcheritem.h

@@ -44,6 +44,7 @@ private:
     void paintEvent(QPaintEvent *e);
     void resizeEvent(QResizeEvent *e);
     void mousePressEvent(QMouseEvent *e);
+    void mouseReleaseEvent(QMouseEvent *e);
 
     QWidget *popupTips();
 

frame/item/pluginsitem.cpp

@@ -150,6 +150,11 @@ void PluginsItem::mouseReleaseEvent(QMouseEvent *e)
     if (e->button() != Qt::LeftButton)
         return;
 
+    if (checkAndResetTapHoldGestureState()) {
+        qDebug() << "tap and hold gesture detected, ignore the synthesized mouse release event";
+        return;
+    }
+
     e->accept();
 
     const QPoint distance = e->pos() - MousePressPoint;