Hi AND low pass filter -- fresh from the oven werks.

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

diff --git a/libs/gtkmm2ext/scroomer.cc b/libs/gtkmm2ext/scroomer.cc
index 07e5b464528e3f9a1a8c4759b77e7811482c7185..69944b4bc7ad17f4cfe4bd5ad5a405432afd6400 100644 (file)
--- a/libs/gtkmm2ext/scroomer.cc
+++ b/libs/gtkmm2ext/scroomer.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2008 Paul Davis 
+    Copyright (C) 2008 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -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) {
@@ -103,9 +107,18 @@ Scroomer::on_motion_notify_event (GdkEventMotion* ev)
                unzoomed_val = max(unzoomed_val, adj.get_lower());
                break;
        case Handle1:
+
                unzoomed_page += scale * fract * range;
                unzoomed_page = min(unzoomed_page, adj.get_upper() - unzoomed_val);
                unzoomed_page = max(unzoomed_page, min_page_size);
+
+               if (pinch){
+                       temp = unzoomed_val + unzoomed_page;
+                       unzoomed_val -= scale * fract * range * 0.5;
+                       unzoomed_val = min(unzoomed_val, temp - min_page_size);
+                       unzoomed_val = max(unzoomed_val, adj.get_lower());
+               }
+
                break;
        case Handle2:
                temp = unzoomed_val + unzoomed_page;
@@ -114,6 +127,13 @@ Scroomer::on_motion_notify_event (GdkEventMotion* ev)
                unzoomed_val = max(unzoomed_val, adj.get_lower());
 
                unzoomed_page = temp - unzoomed_val;
+
+               if (pinch){
+
+                       unzoomed_page -= scale * fract * range;
+               }
+
+               unzoomed_page = min(unzoomed_page, adj.get_upper() - unzoomed_val);
                unzoomed_page = max(unzoomed_page, min_page_size);
                break;
        default:
@@ -122,12 +142,13 @@ 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;
                double lower = val_at_pointer - (unzoomed_val + half_min_page);
 
@@ -149,9 +170,9 @@ Scroomer::on_motion_notify_event (GdkEventMotion* ev)
                page = min(page, adj.get_upper() - val);
        } else if (ev->x < 0) {
                /* on zoom out increase the page size as well as moving the range towards the mouse pos*/
-               zoom = abs(ev->x);
+               /*zoom = abs(ev->x);
 
-               /*double higher = unzoomed_val + unzoomed_page - half_min_page - val_at_pointer;
+               double higher = unzoomed_val + unzoomed_page - half_min_page - val_at_pointer;
                double lower = val_at_pointer - (unzoomed_val + half_min_page);
 
                higher *= zoom / 128;
@@ -179,18 +200,26 @@ Scroomer::on_motion_notify_event (GdkEventMotion* ev)
                page = unzoomed_page;
        }
 
-       adj.set_page_size(page);
-       
-       if (val == adj.get_value()) {
-               adj.value_changed();
-       }
+       /* 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();
 
-       if (val < adj.get_lower()) {
-               adj.value_changed();
-       } else if (val > adj.get_upper()) {
-               adj.value_changed();
-       } else {
-               adj.set_value(val);
+       return true;
+}
+
+bool
+Scroomer::on_scroll_event (GdkEventScroll* ev)
+{
+       switch (ev->direction) {
+       case GDK_SCROLL_UP:
+               adj.set_value (min (adj.get_value() + adj.get_page_size() / 10.0, adj.get_upper() - adj.get_page_size()));
+               break;
+       case GDK_SCROLL_DOWN:
+               adj.set_value (adj.get_value() - adj.get_page_size() / 10.0);
+               break;
+       default:
+               return false;
        }
 
        return true;
@@ -199,7 +228,7 @@ Scroomer::on_motion_notify_event (GdkEventMotion* ev)
 bool
 Scroomer::on_button_press_event (GdkEventButton* ev)
 {
-       if (ev->button == 1) {
+       if (ev->button == 1 || ev->button == 3) {
                Component comp = point_in(ev->y);
 
                if (comp == Total || comp == None) {
@@ -212,8 +241,21 @@ Scroomer::on_button_press_event (GdkEventButton* ev)
                unzoomed_val = adj.get_value();
                unzoomed_page = adj.get_page_size();
                grab_window = ev->window;
+
+               if (ev->button == 3){
+                       pinch = true;
+               } else {
+                        pinch = false;
+                }
+
+               DragStarting (); /* EMIT SIGNAL */
+       }
+
+       if (ev->type == GDK_2BUTTON_PRESS && ev->button == 1) {
+               DoubleClicked();
        }
-       return false;
+
+       return true;
 }
 
 bool
@@ -229,7 +271,7 @@ Scroomer::on_button_release_event (GdkEventButton* ev)
                return true;
        }
 
-       if (ev->button != 1) {
+       if (ev->button != 1 && ev->button != 3) {
                return true;
        }
 
@@ -247,16 +289,11 @@ Scroomer::on_button_release_event (GdkEventButton* ev)
        default:
                break;
        }
-       
+
        grab_comp = None;
 
        remove_modal_grab();
-       return true;
-}
-
-bool
-Scroomer::on_scroll_event (GdkEventScroll*)
-{
+       DragFinishing (); /* EMIT SIGNAL */
        return true;
 }
 
@@ -367,29 +404,5 @@ Scroomer::adjustment_changed()
                rect.set_height(position[BottomBase] - old_pos[Handle2]);
                win->invalidate_rect(rect, false);
        }
-
-       win->process_updates(false);
 }
 
-std::string
-Scroomer::get_comp_name(Component c)
-{
-       switch (c) {
-       case TopBase:
-               return "TopBase";
-       case Handle1:
-               return "Handle1";
-       case Slider:
-               return "Slider";
-       case Handle2:
-               return "Handle2";
-       case BottomBase:
-               return "BottomBase";
-       case Total:
-               return "Total";
-       case None:
-               return "None";
-       default:
-               return "ERROR";
-       }
-}