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livetrax/gtk2_ardour/marker.cc

526 lines
12 KiB
C++

/*
Copyright (C) 2001 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 <sigc++/bind.h>
#include "ardour/tempo.h"
#include "canvas/rectangle.h"
#include "canvas/group.h"
#include "canvas/line.h"
#include "canvas/polygon.h"
#include "canvas/pixbuf.h"
#include "ardour_ui.h"
/*
* ardour_ui.h include was moved to the top of the list
* due to a conflicting definition of 'Rect' between
* Apple's MacTypes.h and GTK.
*/
#include "marker.h"
#include "public_editor.h"
#include "utils.h"
#include "rgb_macros.h"
#include <gtkmm2ext/utils.h>
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace Gtkmm2ext;
PBD::Signal1<void,Marker*> Marker::CatchDeletion;
Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, const string& annotation,
Type type, framepos_t frame, bool handle_events)
: editor (ed)
, _parent (&parent)
, _line (0)
, _type (type)
, _selected (false)
, _shown (false)
, _line_shown (false)
, _canvas_height (0)
, _color (rgba)
, _left_label_limit (DBL_MAX)
, _right_label_limit (DBL_MAX)
, _label_offset (0)
{
/* Shapes we use:
Mark:
(0,0) -> (6,0)
^ |
| V
(0,5) (6,5)
\ /
(3,13)
TempoMark:
MeterMark:
(3,0)
/ \
(0,5) -> (6,5)
^ |
| V
(0,10)<-(6,10)
Start:
0,0\
| \
| \ 6,6
| /
| /
0,12
End:
/12,0
/ |
/ |
6,6 |
\ |
\ |
\ |
12,12
PunchIn:
0,0 ------> 13,0
| /
| /
| /
| /
| /
| /
0,13
PunchOut
0,0 -->-13,0
\ |
\ |
\ |
\ |
\ |
\ |
13,13
*/
switch (type) {
case Mark:
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
points->push_back (ArdourCanvas::Duple (6.0, 0.0));
points->push_back (ArdourCanvas::Duple (6.0, 5.0));
points->push_back (ArdourCanvas::Duple (3.0, 13.0));
points->push_back (ArdourCanvas::Duple (0.0, 5.0));
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
_shift = 3;
_label_offset = 8.0;
break;
case Tempo:
case Meter:
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (3.0, 0.0));
points->push_back (ArdourCanvas::Duple (6.0, 5.0));
points->push_back (ArdourCanvas::Duple (6.0, 10.0));
points->push_back (ArdourCanvas::Duple (0.0, 10.0));
points->push_back (ArdourCanvas::Duple (0.0, 5.0));
points->push_back (ArdourCanvas::Duple (3.0, 0.0));
_shift = 3;
_label_offset = 8.0;
break;
case SessionStart:
case RangeStart:
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
points->push_back (ArdourCanvas::Duple (6.5, 6.5));
points->push_back (ArdourCanvas::Duple (0.0, 13.0));
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
_shift = 0;
_label_offset = 13.0;
break;
case SessionEnd:
case RangeEnd:
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (6.5, 6.5));
points->push_back (ArdourCanvas::Duple (13.0, 0.0));
points->push_back (ArdourCanvas::Duple (13.0, 13.0));
points->push_back (ArdourCanvas::Duple (6.5, 6.5));
_shift = 13;
_label_offset = 6.0;
break;
case LoopStart:
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
points->push_back (ArdourCanvas::Duple (13.0, 13.0));
points->push_back (ArdourCanvas::Duple (0.0, 13.0));
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
_shift = 0;
_label_offset = 12.0;
break;
case LoopEnd:
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (13.0, 0.0));
points->push_back (ArdourCanvas::Duple (13.0, 13.0));
points->push_back (ArdourCanvas::Duple (0.0, 13.0));
points->push_back (ArdourCanvas::Duple (13.0, 0.0));
_shift = 13;
_label_offset = 0.0;
break;
case PunchIn:
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
points->push_back (ArdourCanvas::Duple (13.0, 0.0));
points->push_back (ArdourCanvas::Duple (0.0, 13.0));
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
_shift = 0;
_label_offset = 13.0;
break;
case PunchOut:
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
points->push_back (ArdourCanvas::Duple (12.0, 0.0));
points->push_back (ArdourCanvas::Duple (12.0, 12.0));
points->push_back (ArdourCanvas::Duple (0.0, 0.0));
_shift = 13;
_label_offset = 0.0;
break;
}
frame_position = frame;
unit_position = editor.frame_to_unit (frame);
unit_position -= _shift;
group = new ArdourCanvas::Group (&parent, ArdourCanvas::Duple (unit_position, 0));
#ifdef CANVAS_DEBUG
group->name = string_compose ("Marker::group for %1", annotation);
#endif
_name_background = new ArdourCanvas::Rectangle (group);
#ifdef CANVAS_DEBUG
_name_background->name = string_compose ("Marker::_name_background for %1", annotation);
#endif
_name_background->set_outline_width (1);
/* adjust to properly locate the tip */
mark = new ArdourCanvas::Polygon (group);
#ifdef CANVAS_DEBUG
mark->name = string_compose ("Marker::mark for %1", annotation);
#endif
mark->set (*points);
set_color_rgba (rgba);
mark->set_outline_width (1);
/* setup name pixbuf sizes */
name_font = get_font_for_style (N_("MarkerText"));
Gtk::Label foo;
Glib::RefPtr<Pango::Layout> layout = foo.create_pango_layout (X_("Hg")); /* ascender + descender */
int width;
layout->set_font_description (name_font);
Gtkmm2ext::get_ink_pixel_size (layout, width, name_height);
name_pixbuf = new ArdourCanvas::Pixbuf (group);
#ifdef CANVAS_DEBUG
name_pixbuf->name = string_compose ("Marker::name_pixbuf for %1", annotation);
#endif
name_pixbuf->set_position (ArdourCanvas::Duple (_label_offset, 13 / 2 - name_height / 2));
set_name (annotation.c_str());
editor.ZoomChanged.connect (sigc::mem_fun (*this, &Marker::reposition));
group->set_data ("marker", this);
if (handle_events) {
group->Event.connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_marker_event), group, this));
}
}
Marker::~Marker ()
{
CatchDeletion (this); /* EMIT SIGNAL */
/* destroying the parent group destroys its contents, namely any polygons etc. that we added */
delete group;
delete _line;
}
void Marker::reparent(ArdourCanvas::Group & parent)
{
group->reparent (&parent);
_parent = &parent;
}
void
Marker::set_selected (bool s)
{
_selected = s;
setup_line ();
}
void
Marker::set_show_line (bool s)
{
_line_shown = s;
setup_line ();
}
void
Marker::setup_line ()
{
if (_shown && (_selected || _line_shown)) {
if (_line == 0) {
_line = new ArdourCanvas::Line (group);
_line->set_outline_color (ARDOUR_UI::config()->canvasvar_EditPoint.get());
_line->Event.connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
}
/* work out where to start the line from so that it extends from the top of the canvas */
double yo = 0;
double xo = 0;
_line->item_to_canvas (xo, yo);
_line->set_x0 (_shift);
_line->set_x1 (_shift);
_line->set_y0 (-yo); // zero in world coordinates, negative in item/parent coordinate space
_line->set_y1 (-yo + _canvas_height);
_line->set_outline_color (_selected ? ARDOUR_UI::config()->canvasvar_EditPoint.get() : _color);
_line->raise_to_top ();
_line->show ();
} else {
if (_line) {
_line->hide ();
}
}
}
void
Marker::canvas_height_set (double h)
{
_canvas_height = h;
setup_line ();
}
ArdourCanvas::Item&
Marker::the_item() const
{
return *mark;
}
void
Marker::set_name (const string& new_name)
{
_name = new_name;
setup_name_display ();
}
/** @return true if our label is on the left of the mark, otherwise false */
bool
Marker::label_on_left () const
{
return (_type == SessionEnd || _type == RangeEnd || _type == LoopEnd || _type == PunchOut);
}
void
Marker::setup_name_display ()
{
double limit = DBL_MAX;
if (label_on_left ()) {
limit = _left_label_limit;
} else {
limit = _right_label_limit;
}
/* Work out how wide the name can be */
int name_width = min ((double) pixel_width (_name, name_font) + 2, limit);
if (name_width == 0) {
name_width = 1;
}
if (label_on_left ()) {
name_pixbuf->set_x_position (-name_width);
}
name_pixbuf->set (pixbuf_from_string (_name, name_font, name_width, name_height, Gdk::Color ("#000000")));
if (label_on_left ()) {
_name_background->set_x0 (name_pixbuf->position().x - 2);
_name_background->set_x1 (name_pixbuf->position().x + name_width + _shift);
} else {
_name_background->set_x0 (name_pixbuf->position().x - _label_offset + 2);
_name_background->set_x1 (name_pixbuf->position().x + name_width);
}
_name_background->set_y0 (0);
_name_background->set_y1 (13);
}
void
Marker::set_position (framepos_t frame)
{
unit_position = editor.frame_to_unit (frame) - _shift;
group->set_x_position (unit_position);
frame_position = frame;
}
void
Marker::reposition ()
{
set_position (frame_position);
}
void
Marker::show ()
{
_shown = true;
group->show ();
setup_line ();
}
void
Marker::hide ()
{
_shown = false;
group->hide ();
setup_line ();
}
void
Marker::set_color_rgba (uint32_t c)
{
_color = c;
mark->set_fill_color (_color);
mark->set_outline_color (_color);
if (_line && !_selected) {
_line->set_outline_color (_color);
}
_name_background->set_fill (true);
_name_background->set_fill_color (UINT_RGBA_CHANGE_A (_color, 0x70));
_name_background->set_outline_color (_color);
}
/** Set the number of pixels that are available for a label to the left of the centre of this marker */
void
Marker::set_left_label_limit (double p)
{
/* Account for the size of the marker */
_left_label_limit = p - 13;
if (_left_label_limit < 0) {
_left_label_limit = 0;
}
if (label_on_left ()) {
setup_name_display ();
}
}
/** Set the number of pixels that are available for a label to the right of the centre of this marker */
void
Marker::set_right_label_limit (double p)
{
/* Account for the size of the marker */
_right_label_limit = p - 13;
if (_right_label_limit < 0) {
_right_label_limit = 0;
}
if (!label_on_left ()) {
setup_name_display ();
}
}
/***********************************************************************/
TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
ARDOUR::TempoSection& temp)
: Marker (editor, parent, rgba, text, Tempo, 0, false),
_tempo (temp)
{
set_position (_tempo.frame());
group->Event.connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
}
TempoMarker::~TempoMarker ()
{
}
/***********************************************************************/
MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
ARDOUR::MeterSection& m)
: Marker (editor, parent, rgba, text, Meter, 0, false),
_meter (m)
{
set_position (_meter.frame());
group->Event.connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
}
MeterMarker::~MeterMarker ()
{
}