Handle changed session duration & resizing canvas better wrt end marker, remove unused last_canvas_frame, don't redraw the entire mixer every time its presented, consistent space between rightmost horizontal scroller position and end marker when zooming.

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@3981 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 8 insertions, 15 deletions

diff --git a/gtk2_ardour/editor_canvas.cc b/gtk2_ardour/editor_canvas.cc
index 7b1eca282f..6373810678 100644
--- a/gtk2_ardour/editor_canvas.cc
+++ b/gtk2_ardour/editor_canvas.cc
@@ -324,20 +324,20 @@ Editor::track_canvas_size_allocated ()
 		}
 
 		vertical_adjustment.set_page_size (canvas_height);
+		last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
+		if ((vertical_adjustment.get_value() + canvas_height) >= vertical_adjustment.get_upper()) {
+			/* 
+			   We're increasing the size of the canvas while the bottom is visible.
+			   We scroll down to keep in step with the controls layout.
+			*/
+			vertical_adjustment.set_value (full_canvas_height - canvas_height);
+		}
 	}
 
 	handle_new_duration ();
 	reset_hscrollbar_stepping ();
 	update_fixed_rulers();
 	redisplay_tempo (false);
-	last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
-	if ((vertical_adjustment.get_value() + canvas_height) >= vertical_adjustment.get_upper()) {
-		/* 
-		   We're increasing the size of the canvas while the bottom is visible.
-		   We scroll down to keep in step with the controls layout.
-		*/
-		vertical_adjustment.set_value (full_canvas_height - canvas_height);
-	} 
 
 	Resized (); /* EMIT_SIGNAL */
 
@@ -836,13 +836,6 @@ void
 Editor::canvas_scroll_to (nframes64_t time_origin)
 {
 	leftmost_frame = time_origin;
-	nframes64_t rightmost_frame = leftmost_frame + current_page_frames ();
-
-	if (rightmost_frame > last_canvas_frame) {
-		last_canvas_frame = rightmost_frame;
-		//reset_scrolling_region ();
-	}
-
 }
 
 void