Added ViewWidget as a common ancestor of all view widgets

[pulseview.git] / pv / view / marginwidget.hpp

diff --git a/pv/view/marginwidget.hpp b/pv/view/marginwidget.hpp
index 35d557d10ccab7dcae57f57f6c990bce7c85e9d6..308d9348d12a0341aa6a203cd1b214a8c74839cf 100644 (file)
--- a/pv/view/marginwidget.hpp
+++ b/pv/view/marginwidget.hpp
@@ -24,15 +24,15 @@
 #include <memory>
 
 #include <QPoint>
-#include <QWidget>
+
+#include "viewwidget.hpp"
 
 namespace pv {
 namespace view {
 
-class View;
 class ViewItem;
 
-class MarginWidget : public QWidget
+class MarginWidget : public ViewWidget
 {
        Q_OBJECT
 
@@ -67,6 +67,18 @@ protected:
         */
        void show_popup(const std::shared_ptr<ViewItem> &item);
 
+       /**
+        * Returns true if the selection of row items allows dragging.
+        * @return Returns true if the drag is acceptable.
+        */
+       virtual bool accept_drag() const = 0;
+
+       /**
+        * Drag the dragging items by the delta offset.
+        * @param delta the drag offset in pixels.
+        */
+       virtual void drag_items(const QPoint &delta) = 0;
+
        /**
         * Handles left mouse button press events.
         * @param event the mouse event that triggered this handler.
@@ -82,6 +94,7 @@ protected:
 protected:
        void mousePressEvent(QMouseEvent * event);
        void mouseReleaseEvent(QMouseEvent *event);
+       void mouseMoveEvent(QMouseEvent *event);
 
        void leaveEvent(QEvent *event);
 
@@ -96,7 +109,6 @@ Q_SIGNALS:
        void selection_changed();
 
 protected:
-       pv::view::View &view_;
        QPoint mouse_point_;
        QPoint mouse_down_point_;
        std::shared_ptr<ViewItem> mouse_down_item_;