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livetrax/gtk2_ardour/control_point.cc

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/*
Copyright (C) 2002-2007 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.
*/
#include "control_point.h"
#include "automation_line.h"
#include "ardour_ui.h"
#include "public_editor.h"
#include "canvas/rectangle.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
PBD::Signal1<void, ControlPoint *> ControlPoint::CatchDeletion;
ControlPoint::ControlPoint (AutomationLine& al)
: _line (al)
{
_model = al.the_list()->end();
_view_index = 0;
_can_slide = true;
_x = 0;
_y = 0;
_shape = Full;
_size = 4.0;
_item = new ArdourCanvas::Rectangle (&_line.canvas_group());
_item->property_draw() = true;
_item->set_fill (false);
_item->set_fill_color (ARDOUR_UI::config()->canvasvar_ControlPointFill.get());
_item->set_outline_color (ARDOUR_UI::config()->canvasvar_ControlPointOutline.get());
_item->set_outline_width (1);
_item->set_data ("control_point", this);
_item->Event.connect (sigc::mem_fun (this, &ControlPoint::event_handler));
hide ();
set_visible (false);
}
ControlPoint::ControlPoint (const ControlPoint& other, bool /*dummy_arg_to_force_special_copy_constructor*/)
: _line (other._line)
{
if (&other == this) {
return;
}
_model = other._model;
_view_index = other._view_index;
_can_slide = other._can_slide;
_x = other._x;
_y = other._y;
_shape = other._shape;
_size = other._size;
_item = new ArdourCanvas::Rectangle (&_line.canvas_group());
_item->set_fill (false);
_item->set_outline_color (ARDOUR_UI::config()->canvasvar_ControlPointOutline.get());
_item->set_outline_width (1);
/* NOTE: no event handling in copied ControlPoints */
hide ();
set_visible (false);
}
ControlPoint::~ControlPoint ()
{
CatchDeletion (this); /* EMIT SIGNAL */
delete _item;
}
bool
ControlPoint::event_handler (GdkEvent* event)
{
return PublicEditor::instance().canvas_control_point_event (event, _item, this);
}
void
ControlPoint::hide ()
{
_item->hide();
}
void
ControlPoint::show()
{
_item->show();
}
void
ControlPoint::set_visible (bool yn)
{
_item->property_draw() = (gboolean) yn;
}
bool
ControlPoint::visible () const
{
return _item->property_draw ();
}
void
ControlPoint::reset (double x, double y, AutomationList::iterator mi, uint32_t vi, ShapeType shape)
{
_model = mi;
_view_index = vi;
move_to (x, y, shape);
}
void
ControlPoint::set_color ()
{
uint32_t color = 0;
if (_selected) {
color = ARDOUR_UI::config()->canvasvar_ControlPointSelected.get();
} else {
color = ARDOUR_UI::config()->canvasvar_ControlPointOutline.get();
}
_item->set_outline_color (color);
_item->set_fill_color (ARDOUR_UI::config()->canvasvar_ControlPointFill.get());
}
void
ControlPoint::set_size (double sz)
{
_size = sz;
move_to (_x, _y, _shape);
}
void
ControlPoint::move_to (double x, double y, ShapeType shape)
{
double x1 = 0;
double x2 = 0;
double half_size = rint(_size/2.0);
switch (shape) {
case Full:
x1 = x - half_size;
x2 = x + half_size;
break;
case Start:
x1 = x;
x2 = x + half_size;
break;
case End:
x1 = x - half_size;
x2 = x;
break;
}
_item->set (ArdourCanvas::Rect (x1, y - half_size, x2, y + half_size));
_x = x;
_y = y;
_shape = shape;
}
void
ControlPoint::i2w (double& x, double& y) const
{
_item->item_to_canvas (x, y);
}