Editor Summary: Changes to behavior

* Remove up/down buttons.
* Allow the summary to shrink smaller.
* Vertical drag results in zoom.
* Scroll-wheel results in zoom.
* Tweak mouse cursor to better indicate behaviors.
* ToDo:  refactor the zooming code.

1 files changed, 10 insertions, 22 deletions

diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index 6a20d81316..712e1a8f1f 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -684,33 +684,21 @@ Editor::Editor ()
 	editor_summary_pane.set_check_divider_position (true);
 	editor_summary_pane.add (edit_packer);
 
-	Button* summary_arrows_left_left = manage (new Button);
-	summary_arrows_left_left->add (*manage (new Arrow (ARROW_LEFT, SHADOW_NONE)));
-	summary_arrows_left_left->signal_pressed().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*this, &Editor::scroll_press), LEFT)));
-	summary_arrows_left_left->signal_released().connect (sigc::mem_fun (*this, &Editor::scroll_release));
+	Button* summary_arrow_left = manage (new Button);
+	summary_arrow_left->add (*manage (new Arrow (ARROW_LEFT, SHADOW_NONE)));
+	summary_arrow_left->signal_pressed().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*this, &Editor::scroll_press), LEFT)));
+	summary_arrow_left->signal_released().connect (sigc::mem_fun (*this, &Editor::scroll_release));
 
-	Button* summary_arrows_left_right = manage (new Button);
-	summary_arrows_left_right->add (*manage (new Arrow (ARROW_RIGHT, SHADOW_NONE)));
-	summary_arrows_left_right->signal_pressed().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*this, &Editor::scroll_press), RIGHT)));
-	summary_arrows_left_right->signal_released().connect (sigc::mem_fun (*this, &Editor::scroll_release));
+	Button* summary_arrow_right = manage (new Button);
+	summary_arrow_right->add (*manage (new Arrow (ARROW_RIGHT, SHADOW_NONE)));
+	summary_arrow_right->signal_pressed().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*this, &Editor::scroll_press), RIGHT)));
+	summary_arrow_right->signal_released().connect (sigc::mem_fun (*this, &Editor::scroll_release));
 
 	VBox* summary_arrows_left = manage (new VBox);
-	summary_arrows_left->pack_start (*summary_arrows_left_left);
-	summary_arrows_left->pack_start (*summary_arrows_left_right);
-
-	Button* summary_arrows_right_up = manage (new Button);
-	summary_arrows_right_up->add (*manage (new Arrow (ARROW_UP, SHADOW_NONE)));
-	summary_arrows_right_up->signal_pressed().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*this, &Editor::scroll_press), UP)));
-	summary_arrows_right_up->signal_released().connect (sigc::mem_fun (*this, &Editor::scroll_release));
-
-	Button* summary_arrows_right_down = manage (new Button);
-	summary_arrows_right_down->add (*manage (new Arrow (ARROW_DOWN, SHADOW_NONE)));
-	summary_arrows_right_down->signal_pressed().connect (sigc::hide_return (sigc::bind (sigc::mem_fun (*this, &Editor::scroll_press), DOWN)));
-	summary_arrows_right_down->signal_released().connect (sigc::mem_fun (*this, &Editor::scroll_release));
+	summary_arrows_left->pack_start (*summary_arrow_left);
 
 	VBox* summary_arrows_right = manage (new VBox);
-	summary_arrows_right->pack_start (*summary_arrows_right_up);
-	summary_arrows_right->pack_start (*summary_arrows_right_down);
+	summary_arrows_right->pack_start (*summary_arrow_right);
 
 	Frame* summary_frame = manage (new Frame);
 	summary_frame->set_shadow_type (Gtk::SHADOW_ETCHED_IN);