livetrax/gtk2_ardour/regionview.cc

/*
    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.

    $Id$
*/

#include <cmath>
#include <cassert>
#include <algorithm>

#include <gtkmm.h>

#include <gtkmm2ext/gtk_ui.h>

#include <ardour/playlist.h>
#include <ardour/audioregion.h>
#include <ardour/audiosource.h>
#include <ardour/audio_diskstream.h>

#include "streamview.h"
#include "regionview.h"
#include "route_time_axis.h"
#include "simplerect.h"
#include "simpleline.h"
#include "waveview.h"
#include "public_editor.h"
#include "region_editor.h"
#include "ghostregion.h"
#include "route_time_axis.h"
#include "utils.h"
#include "rgb_macros.h"
#include "gui_thread.h"

#include "i18n.h"

using namespace sigc;
using namespace ARDOUR;
using namespace PBD;
using namespace Editing;
using namespace ArdourCanvas;

static const int32_t sync_mark_width = 9;

sigc::signal<void,RegionView*> RegionView::RegionViewGoingAway;

RegionView::RegionView (ArdourCanvas::Group* parent, 
                        TimeAxisView&        tv,
                        ARDOUR::Region&      r,
                        double               spu,
                        Gdk::Color&          basic_color)
	: TimeAxisViewItem (r.name(), *parent, tv, spu, basic_color, r.position(), r.length(),
			TimeAxisViewItem::Visibility (TimeAxisViewItem::ShowNameText|
			                              TimeAxisViewItem::ShowNameHighlight|
			                              TimeAxisViewItem::ShowFrame))
	, _region (r)
{
}

RegionView::RegionView (ArdourCanvas::Group*         parent, 
                        TimeAxisView&                tv,
                        ARDOUR::Region&              r,
                        double                       spu,
                        Gdk::Color&                  basic_color,
                        TimeAxisViewItem::Visibility visibility)
	: TimeAxisViewItem (r.name(), *parent, tv, spu, basic_color, r.position(), r.length(), visibility)
	, _region (r)
{
}

void
RegionView::init (Gdk::Color& basic_color, bool wfw)
{
    ArdourCanvas::Points shape;
	//XMLNode *node;

	editor = 0;
	valid = true;
	in_destructor = false;
	_height = 0;

	_flags = 0;

	/*
	if ((node = _region.extra_xml ("GUI")) != 0) {
		set_flags (node);
	} else {
		//_flags = WaveformVisible;
		store_flags ();
	}*/

	compute_colors (basic_color);

	name_highlight->set_data ("regionview", this);
	name_text->set_data ("regionview", this);

	//	shape = new ArdourCanvas::Points ();

	/* an equilateral triangle */

	shape.push_back (Gnome::Art::Point (-((sync_mark_width-1)/2), 1));
	shape.push_back (Gnome::Art::Point ((sync_mark_width - 1)/2, 1));
	shape.push_back (Gnome::Art::Point (0, sync_mark_width - 1));
	shape.push_back (Gnome::Art::Point (-((sync_mark_width-1)/2), 1));

	sync_mark =  new ArdourCanvas::Polygon (*group);
	sync_mark->property_points() = shape;
	sync_mark->property_fill_color_rgba() = fill_color;
	sync_mark->hide();

	reset_width_dependent_items ((double) _region.length() / samples_per_unit);

	set_height (trackview.height);

	region_muted ();
	region_sync_changed ();
	region_resized (BoundsChanged);
	region_locked ();

	_region.StateChanged.connect (mem_fun(*this, &RegionView::region_changed));

	group->signal_event().connect (bind (mem_fun (PublicEditor::instance(), &PublicEditor::canvas_region_view_event), group, this));
	name_highlight->signal_event().connect (bind (mem_fun (PublicEditor::instance(), &PublicEditor::canvas_region_view_name_highlight_event), name_highlight, this));

	set_colors ();

	ColorChanged.connect (mem_fun (*this, &RegionView::color_handler));

	/* XXX sync mark drag? */
}

RegionView::~RegionView ()
{
	in_destructor = true;

	RegionViewGoingAway (this); /* EMIT_SIGNAL */

	for (vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
		delete *g;
	}

	if (editor) {
		delete editor;
	}
}

gint
RegionView::_lock_toggle (ArdourCanvas::Item* item, GdkEvent* ev, void* arg)
{
	switch (ev->type) {
	case GDK_BUTTON_RELEASE:
		static_cast<RegionView*>(arg)->lock_toggle ();
		return TRUE;
		break;
	default:
		break;
	} 
	return FALSE;
}

void
RegionView::lock_toggle ()
{
	_region.set_locked (!_region.locked());
}

void
RegionView::region_changed (Change what_changed)
{
	ENSURE_GUI_THREAD (bind (mem_fun(*this, &RegionView::region_changed), what_changed));

	if (what_changed & BoundsChanged) {
		region_resized (what_changed);
		region_sync_changed ();
	}
	if (what_changed & Region::MuteChanged) {
		region_muted ();
	}
	if (what_changed & Region::OpacityChanged) {
		region_opacity ();
	}
	if (what_changed & ARDOUR::NameChanged) {
		region_renamed ();
	}
	if (what_changed & Region::SyncOffsetChanged) {
		region_sync_changed ();
	}
	if (what_changed & Region::LayerChanged) {
		region_layered ();
	}
	if (what_changed & Region::LockChanged) {
		region_locked ();
	}
}

void
RegionView::region_locked ()
{
	/* name will show locked status */
	region_renamed ();
}

void
RegionView::region_resized (Change what_changed)
{
	double unit_length;

	if (what_changed & ARDOUR::PositionChanged) {
		set_position (_region.position(), 0);
	}

	if (what_changed & Change (StartChanged|LengthChanged)) {

		set_duration (_region.length(), 0);

		unit_length = _region.length() / samples_per_unit;
		
		reset_width_dependent_items (unit_length);
		
 		for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {

 			(*i)->set_duration (unit_length);

 			/*for (vector<WaveView*>::iterator w = (*i)->waves.begin(); w != (*i)->waves.end(); ++w) {
				(*w)->property_region_start() = _region.start();
 			}*/
 		}
	}
}

void
RegionView::reset_width_dependent_items (double pixel_width)
{
	TimeAxisViewItem::reset_width_dependent_items (pixel_width);
	_pixel_width = pixel_width;
/*
	if (zero_line) {
		zero_line->property_x2() = pixel_width - 1.0;
	}

	if (fade_in_handle) {
		if (pixel_width <= 6.0) {
			fade_in_handle->hide();
			fade_out_handle->hide();
		} else {
			if (_height < 5.0) {
				fade_in_handle->hide();
				fade_out_handle->hide();
			} else {
				fade_in_handle->show();
				fade_out_handle->show();
			}
		}
	}

	reset_fade_shapes ();*/
}

void
RegionView::region_layered ()
{
	RouteTimeAxisView *rtv = dynamic_cast<RouteTimeAxisView*>(&get_time_axis_view());
	assert(rtv);
	rtv->view()->region_layered (this);
}
	
void
RegionView::region_muted ()
{
	set_frame_color ();
	region_renamed ();

	/*for (uint32_t n=0; n < waves.size(); ++n) {
		if (_region.muted()) {
			waves[n]->property_wave_color() = color_map[cMutedWaveForm];
		} else {
			waves[n]->property_wave_color() = color_map[cWaveForm];
		}
	}*/
}

void
RegionView::region_opacity ()
{
	set_frame_color ();
}

void
RegionView::raise ()
{
	_region.raise ();
}

void
RegionView::raise_to_top ()
{
	_region.raise_to_top ();
}

void
RegionView::lower ()
{
	_region.lower ();
}

void
RegionView::lower_to_bottom ()
{
	_region.lower_to_bottom ();
}

bool
RegionView::set_position (jack_nframes_t pos, void* src, double* ignored)
{
	double delta;
	bool ret;

	if (!(ret = TimeAxisViewItem::set_position (pos, this, &delta))) {
		return false;
	}

	if (ignored) {
		*ignored = delta;
	}

	if (delta) {
		for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
			(*i)->group->move (delta, 0.0);
		}
	}

	return ret;
}

void
RegionView::set_samples_per_unit (gdouble spu)
{
	TimeAxisViewItem::set_samples_per_unit (spu);

	/*for (uint32_t n=0; n < waves.size(); ++n) {
		waves[n]->property_samples_per_unit() = spu;
	}*/

	for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
		(*i)->set_samples_per_unit (spu);
		(*i)->set_duration (_region.length() / samples_per_unit);
	}

	/*if (gain_line) {
		gain_line->reset ();
	}*/
	//reset_fade_shapes ();
	region_sync_changed ();
}

bool
RegionView::set_duration (jack_nframes_t frames, void *src)
{
	if (!TimeAxisViewItem::set_duration (frames, src)) {
		return false;
	}
	
	for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
		(*i)->set_duration (_region.length() / samples_per_unit);
	}

	return true;
}

void
RegionView::compute_colors (Gdk::Color& basic_color)
{
	TimeAxisViewItem::compute_colors (basic_color);
	uint32_t r, g, b, a;

	UINT_TO_RGBA (fill_color, &r, &g, &b, &a);
	fade_color = RGBA_TO_UINT(r,g,b,120);
}

void
RegionView::set_colors ()
{
	TimeAxisViewItem::set_colors ();
	
	/*if (gain_line) {
		gain_line->set_line_color (_region.envelope_active() ? color_map[cGainLine] : color_map[cGainLineInactive]);
	}*/

	if (sync_mark) {
		sync_mark->property_fill_color_rgba() = fill_color;
	}

	/*for (uint32_t n=0; n < waves.size(); ++n) {
		if (_region.muted()) {
			waves[n]->property_wave_color() = color_map[cMutedWaveForm];
		} else {
			waves[n]->property_wave_color() = color_map[cWaveForm];
		}
	}*/
}

void
RegionView::set_frame_color ()
{
	if (_region.opaque()) {
		fill_opacity = 180;
	} else {
		fill_opacity = 100;
	}

	TimeAxisViewItem::set_frame_color ();
}

void
RegionView::hide_region_editor()
{
	if (editor) {
		editor->hide_all ();
	}
}

void
RegionView::region_renamed ()
{
	string str;

	if (_region.locked()) {
		str += '>';
		str += _region.name();
		str += '<';
	} else {
		str = _region.name();
	}

	/* FIXME
	if (_region.speed_mismatch (trackview.session().frame_rate())) {
		str = string ("*") + str;
	}*/

	if (_region.muted()) {
		str = string ("!") + str;
	}

	set_item_name (str, this);
	set_name_text (str);
}

void
RegionView::region_sync_changed ()
{
	if (sync_mark == 0) {
		return;
	}

	int sync_dir;
	jack_nframes_t sync_offset;

	sync_offset = _region.sync_offset (sync_dir);

	/* this has to handle both a genuine change of position, a change of samples_per_unit,
	   and a change in the bounds of the _region.
	 */

	if (sync_offset == 0) {

		/* no sync mark - its the start of the region */

		sync_mark->hide();

	} else {

		if ((sync_dir < 0) || ((sync_dir > 0) && (sync_offset > _region.length()))) { 

			/* no sync mark - its out of the bounds of the region */

			sync_mark->hide();

		} else {

			/* lets do it */

			Points points;
			
			//points = sync_mark->property_points().get_value();
			
			double offset = sync_offset / samples_per_unit;
			points.push_back (Gnome::Art::Point (offset - ((sync_mark_width-1)/2), 1));
			points.push_back (Gnome::Art::Point (offset + ((sync_mark_width-1)/2), 1));
			points.push_back (Gnome::Art::Point (offset, sync_mark_width - 1));
			points.push_back (Gnome::Art::Point (offset - ((sync_mark_width-1)/2), 1));	
			sync_mark->property_points().set_value (points);
			sync_mark->show();

		}
	}
}

void
RegionView::move (double x_delta, double y_delta)
{
	if (_region.locked() || (x_delta == 0 && y_delta == 0)) {
		return;
	}

	get_canvas_group()->move (x_delta, y_delta);

	/* note: ghosts never leave their tracks so y_delta for them is always zero */

	for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
		(*i)->group->move (x_delta, 0.0);
	}
}

void
RegionView::remove_ghost (GhostRegion* ghost)
{
	if (in_destructor) {
		return;
	}

	for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
		if (*i == ghost) {
			ghosts.erase (i);
			break;
		}
	}
}

uint32_t
RegionView::get_fill_color ()
{
	return fill_color;
}