144 lines
2.6 KiB
C++
144 lines
2.6 KiB
C++
|
/*
|
||
|
|
Copyright (C) 2011-2013 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 <algorithm>
|
||
|
|
|
||
|
|
#include "canvas/canvas.h"
|
||
|
|
#include "canvas/tracking_text.h"
|
||
|
|
|
||
|
|
using namespace ArdourCanvas;
|
||
|
|
|
||
|
|
TrackingText::TrackingText (Canvas* c)
|
||
|
|
: Text (c)
|
||
|
|
, track_x (true)
|
||
|
|
, track_y (true)
|
||
|
|
, offset (Duple (10, 10))
|
||
|
|
{
|
||
|
|
init ();
|
||
|
|
}
|
||
|
|
|
||
|
|
TrackingText::TrackingText (Item* p)
|
||
|
|
: Text (p)
|
||
|
|
, track_x (true)
|
||
|
|
, track_y (true)
|
||
|
|
, offset (Duple (10, 10))
|
||
|
|
{
|
||
|
|
init ();
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
TrackingText::init ()
|
||
|
|
{
|
||
|
|
_canvas->MouseMotion.connect (sigc::mem_fun (*this, &TrackingText::pointer_motion));
|
||
|
|
set_ignore_events (true);
|
||
|
|
hide ();
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
TrackingText::pointer_motion (Duple const & winpos)
|
||
|
|
{
|
||
|
|
if (!_visible) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
Duple pos (_parent->window_to_item (winpos));
|
||
|
|
|
||
|
|
if (!track_x) {
|
||
|
|
pos.x = position().x;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!track_y) {
|
||
|
|
pos.y = position().y;
|
||
|
|
}
|
||
|
|
|
||
|
|
pos = pos.translate (offset);
|
||
|
|
|
||
|
|
/* keep inside the window */
|
||
|
|
|
||
|
|
Rect r (0, 0, _canvas->width(), _canvas->height());
|
||
|
|
|
||
|
|
/* border of 200 pixels on the right, and 50 on all other sides */
|
||
|
|
|
||
|
|
const double border = 50.0;
|
||
|
|
|
||
|
|
r.x0 += border;
|
||
|
|
r.x1 = std::max (r.x0, (r.x1 - 200.0));
|
||
|
|
r.y0 += border;
|
||
|
|
r.y1 = std::max (r.y0, (r.y1 - border));
|
||
|
|
|
||
|
|
/* clamp */
|
||
|
|
|
||
|
|
if (pos.x < r.x0) {
|
||
|
|
pos.x = r.x0;
|
||
|
|
} else if (pos.x > r.x1) {
|
||
|
|
pos.x = r.x1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pos.y < r.y0) {
|
||
|
|
pos.y = r.y0;
|
||
|
|
} else if (pos.y > r.y1) {
|
||
|
|
pos.y = r.y1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* move */
|
||
|
|
|
||
|
|
set_position (pos);
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
TrackingText::show_and_track (bool tx, bool ty)
|
||
|
|
{
|
||
|
|
track_x = tx;
|
||
|
|
track_y = ty;
|
||
|
|
|
||
|
|
bool was_visible = _visible;
|
||
|
|
show ();
|
||
|
|
|
||
|
|
if (!was_visible) {
|
||
|
|
/* move to current pointer location. do this after show() so that
|
||
|
|
* _visible is true, and thus ::pointer_motion() will do
|
||
|
|
* something.
|
||
|
|
*/
|
||
|
|
Duple winpos;
|
||
|
|
|
||
|
|
if (!_canvas->get_mouse_position (winpos)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
pointer_motion (winpos);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
TrackingText::set_x_offset (double o)
|
||
|
|
{
|
||
|
|
offset.x = o;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
TrackingText::set_y_offset (double o)
|
||
|
|
{
|
||
|
|
offset.y = o;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
TrackingText::set_offset (Duple const & d)
|
||
|
|
{
|
||
|
|
offset = d;
|
||
|
|
}
|