Merge branch 'ripple-mode-cc' into cairocanvas

[ardour.git] / libs / gtkmm2ext / scroomer.cc

diff --git a/libs/gtkmm2ext/scroomer.cc b/libs/gtkmm2ext/scroomer.cc
index 85092379f495b79f728bffb22c98a65f6135fd70..6e27f5ce0a6d79c1339aea12f310f86a2e9695dd 100644 (file)
--- a/libs/gtkmm2ext/scroomer.cc
+++ b/libs/gtkmm2ext/scroomer.cc
@@ -74,6 +74,10 @@ Scroomer::on_motion_notify_event (GdkEventMotion* ev)
                return true;
        }
 
+       if (ev->y < 0 || ev->y > get_height ()) {
+               return true;
+       }
+
        grab_y = ev->y;
 
        if (ev->state & Keyboard::PrimaryModifier) {
@@ -138,10 +142,11 @@ Scroomer::on_motion_notify_event (GdkEventMotion* ev)
 
        /* Then we handle zoom, which is dragging horizontally. We zoom around the area that is
         * the current y pointer value, not from the area that was the start of the drag.
-        * the point of zoom must have the same 
+        * We don't start doing zoom until we are at least one scroomer width outside the scroomer's
+        * area.
         */
        
-       if (ev->x > get_width()) {
+       if (ev->x > (get_width() * 2)) {
                zoom = ev->x - get_width();
                
                double higher = unzoomed_val + unzoomed_page - half_min_page - val_at_pointer;
@@ -194,9 +199,10 @@ Scroomer::on_motion_notify_event (GdkEventMotion* ev)
                val = unzoomed_val;
                page = unzoomed_page;
        }
-       
-       adj.set_page_size(page);
-       adj.set_value(val);
+
+       /* Round these values to stop the scroomer handlers quivering about during drags */
+       adj.set_page_size (rint (page));
+       adj.set_value (rint (val));
        adj.value_changed();
        
        return true;
@@ -245,6 +251,10 @@ Scroomer::on_button_press_event (GdkEventButton* ev)
                DragStarting (); /* EMIT SIGNAL */
        }
        
+       if (ev->type == GDK_2BUTTON_PRESS && ev->button == 1) {
+               DoubleClicked();
+       }
+
        return false;
 }