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livetrax/gtk2_ardour/editor_hscroller.cc

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/*
Copyright (C) 2002 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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include "editor.h"
#include <ardour/session.h>
using namespace std;
using namespace ARDOUR;
using namespace PBD;
void
Editor::hscrollbar_allocate (Gtk::Allocation &alloc)
{
}
bool
Editor::hscrollbar_button_press (GdkEventButton *ev)
{
edit_hscroll_dragging = true;
return true;
}
bool
Editor::hscrollbar_button_release (GdkEventButton *ev)
{
if (session) {
if (edit_hscroll_dragging) {
// lets do a tempo redisplay only on button release, because it is dog slow
tempo_map_changed (Change (0));
edit_hscroll_dragging = false;
}
}
return true;
}
void
Editor::reset_hscrollbar_stepping ()
{
horizontal_adjustment.set_step_increment ((current_page_frames() / 5)/frames_per_unit); /* 5 clicks to scroll the entire page */
horizontal_adjustment.set_page_increment (current_page_frames()/frames_per_unit);
}