Viewport: Allow for vertical dragging as well

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

diff --git a/pv/view/signal.hpp b/pv/view/signal.hpp
index 8208a762ca387bc040e88983b4fc9689f2f757dd..bcd4e2eb617eef83a46a5c1e98bf308751b48d8e 100644 (file)
--- a/pv/view/signal.hpp
+++ b/pv/view/signal.hpp
@@ -28,7 +28,9 @@
 
 #include <stdint.h>
 
+#include "signalscalehandle.hpp"
 #include "trace.hpp"
+#include "viewitemowner.hpp"
 
 namespace sigrok {
        class Channel;
@@ -44,7 +46,7 @@ class SignalData;
 
 namespace view {
 
-class Signal : public Trace
+class Signal : public Trace, public ViewItemOwner
 {
        Q_OBJECT
 
@@ -69,12 +71,35 @@ public:
 
        std::shared_ptr<sigrok::Channel> channel() const;
 
+       /**
+        * Returns a list of row items owned by this object.
+        */
+       const item_list& child_items() const;
+
+       void paint_back(QPainter &p, const ViewItemPaintParams &pp);
+
        virtual void populate_popup_form(QWidget *parent, QFormLayout *form);
 
        QMenu* create_context_menu(QWidget *parent);
 
        void delete_pressed();
 
+       /**
+        * Returns the offset to show the drag handle.
+        */
+       virtual int scale_handle_offset() const = 0;
+
+       /**
+        * Handles the scale handle being dragged to an offset.
+        * @param offset the offset the scale handle was dragged to.
+        */
+       virtual void scale_handle_dragged(int offset) = 0;
+
+       /**
+        * Handles the scale handle being being released.
+        */
+       virtual void scale_handle_released() {};
+
 private Q_SLOTS:
        void on_disable();
 
@@ -82,6 +107,9 @@ protected:
        pv::Session &session_;
        std::shared_ptr<sigrok::Channel> channel_;
 
+       const std::shared_ptr<SignalScaleHandle> scale_handle_;
+       const item_list items_;
+
        QComboBox *name_widget_;
        bool updating_name_widget_;
 };