Viewport: Implemented item hover cursors

[pulseview.git] / pv / view / viewwidget.cpp

diff --git a/pv/view/viewwidget.cpp b/pv/view/viewwidget.cpp
index 816fbf513db042fa48dd6edd48fe7c68bd869453..e364d6385f61eb9768b5b0afc9995adda4840bee 100644 (file)
--- a/pv/view/viewwidget.cpp
+++ b/pv/view/viewwidget.cpp
@@ -51,6 +51,11 @@ void ViewWidget::clear_selection()
        update();
 }
 
+void ViewWidget::item_hover(const shared_ptr<ViewItem> &item)
+{
+       (void)item;
+}
+
 void ViewWidget::item_clicked(const shared_ptr<ViewItem> &item)
 {
        (void)item;
@@ -85,7 +90,8 @@ bool ViewWidget::accept_drag() const
                return true;
        }
 
-       return false;
+       // A background drag is beginning
+       return true;
 }
 
 bool ViewWidget::mouse_down() const
@@ -96,6 +102,8 @@ bool ViewWidget::mouse_down() const
 
 void ViewWidget::drag_items(const QPoint &delta)
 {
+       bool item_dragged = false;
+
        // Drag the row items
        RowItemOwner *item_owner = nullptr;
        for (std::shared_ptr<RowItem> r : view_)
@@ -108,6 +116,7 @@ void ViewWidget::drag_items(const QPoint &delta)
                }
 
        if (item_owner) {
+               item_dragged = true;
                item_owner->restack_items();
                for (const auto &r : *item_owner)
                        r->animate_to_layout_v_offset();
@@ -116,8 +125,27 @@ void ViewWidget::drag_items(const QPoint &delta)
        // Drag the time items
        const vector< shared_ptr<TimeItem> > items(view_.time_items());
        for (auto &i : items)
-               if (i->dragging())
+               if (i->dragging()) {
                        i->drag_by(delta);
+                       item_dragged = true;
+               }
+
+       // Do the background drag
+       if (!item_dragged)
+               drag_by(delta);
+}
+
+void ViewWidget::drag()
+{
+}
+
+void ViewWidget::drag_by(const QPoint &delta)
+{
+       (void)delta;
+}
+
+void ViewWidget::drag_release()
+{
 }
 
 void ViewWidget::mouse_left_press_event(QMouseEvent *event)
@@ -141,10 +169,17 @@ void ViewWidget::mouse_left_press_event(QMouseEvent *event)
        }
 
        // Save the offsets of any signals which will be dragged
+       bool item_dragged = false;
        const auto items = this->items();
        for (auto &i : items)
-               if (i->selected())
+               if (i->selected()) {
+                       item_dragged = true;
                        i->drag();
+               }
+
+       // Do the background drag
+       if (!item_dragged)
+               drag();
 
        selection_changed();
        update();
@@ -226,26 +261,32 @@ void ViewWidget::mouseReleaseEvent(QMouseEvent *event)
        mouse_down_item_ = nullptr;
 }
 
-void ViewWidget::mouseMoveEvent(QMouseEvent *event)
+void ViewWidget::mouseMoveEvent(QMouseEvent *e)
 {
-       assert(event);
-       mouse_point_ = event->pos();
+       assert(e);
+       mouse_point_ = e->pos();
 
-       if (!(event->buttons() & Qt::LeftButton))
-               return;
+       if (!e->buttons())
+               item_hover(get_mouse_over_item(e->pos()));
+       else if (e->buttons() & Qt::LeftButton)
+       {
+               if (!item_dragging_)
+               {
+                       if ((e->pos() - mouse_down_point_).manhattanLength() <
+                               QApplication::startDragDistance())
+                               return;
 
-       if ((event->pos() - mouse_down_point_).manhattanLength() <
-               QApplication::startDragDistance())
-               return;
+                       if (!accept_drag())
+                               return;
 
-       if (!accept_drag())
-               return;
+                       item_dragging_ = true;
+               }
 
-       // Do the drag
-       item_dragging_ = true;
-       drag_items(event->pos() - mouse_down_point_);
+               // Do the drag
+               drag_items(e->pos() - mouse_down_point_);
 
-       update();
+               update();
+       }
 }
 
 void ViewWidget::leaveEvent(QEvent*)