Added ViewItemOwner

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

diff --git a/pv/view/viewitem.hpp b/pv/view/viewitem.hpp
index 6a78b1afb583eb1c20256f936e4d0a159fd093ef..dd3d2aa0c2c61a4969a53c6a5fc899cb5c7e802b 100644 (file)
--- a/pv/view/viewitem.hpp
+++ b/pv/view/viewitem.hpp
@@ -18,13 +18,15 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#ifndef PULSEVIEW_PV_VIEWITEM_H
-#define PULSEVIEW_PV_VIEWITEM_H
+#ifndef PULSEVIEW_PV_VIEWITEM_HPP
+#define PULSEVIEW_PV_VIEWITEM_HPP
 
 #include <list>
 
 #include <QPen>
 
+#include "viewitempaintparams.hpp"
+
 class QAction;
 class QMenu;
 class QWidget;
@@ -37,11 +39,14 @@ class Popup;
 
 namespace view {
 
+class ViewItemOwner;
+
 class ViewItem : public QObject
 {
        Q_OBJECT
 
-private:
+public:
+       static const QSizeF LabelPadding;
        static const int HighlightRadius;
 
 public:
@@ -68,11 +73,6 @@ public:
         */
        bool dragging() const;
 
-       /**
-        * Retunrns the current drag point.
-        */
-       QPoint drag_point() const;
-
        /**
         * Sets this item into the dragged state.
         */
@@ -83,10 +83,17 @@ public:
         */
        void drag_release();
 
+       /**
+        * Drags the item to a delta relative to the drag point.
+        * @param delta the offset from the drag point.
+        */
+       virtual void drag_by(const QPoint &delta) = 0;
+
        /**
         * Get the drag point.
+        * @param rect the rectangle of the widget area.
         */
-       virtual QPoint point() const = 0;
+       virtual QPoint point(const QRect &rect) const = 0;
 
        /**
         * Computes the outline rectangle of a label.
@@ -95,6 +102,43 @@ public:
         */
        virtual QRectF label_rect(const QRectF &rect) const = 0;
 
+       /**
+        * Computes the outline rectangle of the viewport hit-box.
+        * @param rect the rectangle of the viewport area.
+        * @return Returns the rectangle of the hit-box.
+        * @remarks The default implementation returns an empty hit-box.
+        */
+       virtual QRectF hit_box_rect(const QRectF &rect) const;
+
+       /**
+        * Paints the signal label.
+        * @param p the QPainter to paint into.
+        * @param rect the rectangle of the header area.
+        * @param hover true if the label is being hovered over by the mouse.
+        */
+       virtual void paint_label(QPainter &p, const QRect &rect, bool hover) = 0;
+
+       /**
+        * Paints the background layer of the item with a QPainter
+        * @param p the QPainter to paint into.
+        * @param pp the painting parameters object to paint with.
+        **/
+       virtual void paint_back(QPainter &p, const ViewItemPaintParams &pp);
+
+       /**
+        * Paints the mid-layer of the item with a QPainter
+        * @param p the QPainter to paint into.
+        * @param pp the painting parameters object to paint with.
+        **/
+       virtual void paint_mid(QPainter &p, const ViewItemPaintParams &pp);
+
+       /**
+        * Paints the foreground layer of the item with a QPainter
+        * @param p the QPainter to paint into.
+        * @param pp the painting parameters object to paint with.
+        **/
+       virtual void paint_fore(QPainter &p, const ViewItemPaintParams &pp);
+
 public:
        /**
         * Gets the text colour.
@@ -107,7 +151,7 @@ public:
 public:
        virtual QMenu* create_context_menu(QWidget *parent);
 
-       virtual pv::widgets::Popup* create_popup(QWidget *parent) = 0;
+       virtual pv::widgets::Popup* create_popup(QWidget *parent);
 
        virtual void delete_pressed();
 
@@ -116,13 +160,13 @@ protected:
 
 protected:
        QWidget *context_parent_;
+       QPoint drag_point_;
 
 private:
        bool selected_;
-       QPoint drag_point_;
 };
 
 } // namespace view
 } // namespace pv
 
-#endif // PULSEVIEW_PV_VIEWITEM_H
+#endif // PULSEVIEW_PV_VIEWITEM_HPP