Viewport: Removed broken using std::isnan

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

diff --git a/pv/view/viewport.hpp b/pv/view/viewport.hpp
index 43905337fefaad1c4b78cc6a71ef432212e15c11..78dfbb24bbfd485f7f12ae1f211145af06d8e933 100644 (file)
--- a/pv/view/viewport.hpp
+++ b/pv/view/viewport.hpp
@@ -43,6 +43,13 @@ public:
        explicit Viewport(View &parent);
 
 private:
+       /**
+        * Indicates when a view item is being hovered over.
+        * @param item The item that is being hovered over, or @c nullptr
+        * if no view item is being hovered over.
+        */
+       void item_hover(const std::shared_ptr<pv::view::ViewItem> &item);
+
        /**
         * Gets the first view item which has a hit-box that contains @c pt .
         * @param pt the point to search with.
@@ -52,6 +59,22 @@ private:
        std::shared_ptr<pv::view::ViewItem> get_mouse_over_item(
                const QPoint &pt);
 
+       /**
+        * Sets this item into the dragged state.
+        */
+       void drag();
+
+       /**
+        * Drag the background by the delta offset.
+        * @param delta the drag offset in pixels.
+        */
+       void drag_by(const QPoint &delta);
+
+       /**
+        * Sets this item into the un-dragged state.
+        */
+       void drag_release();
+
        /**
         * Gets the items in the view widget.
         */
@@ -66,15 +89,11 @@ private:
 private:
        void paintEvent(QPaintEvent *event);
 
-       void mousePressEvent(QMouseEvent *event);
-       void mouseReleaseEvent(QMouseEvent *event);
-       void mouseMoveEvent(QMouseEvent *event);
        void mouseDoubleClickEvent(QMouseEvent * event);
        void wheelEvent(QWheelEvent *event);
+
 private:
-       QPoint mouse_down_point_;
-       double mouse_down_offset_;
-       bool mouse_down_valid_;
+       double drag_offset_;
 
        double pinch_offset0_;
        double pinch_offset1_;