/*
    Copyright (C) 2001-2007 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 <cmath>
#include <cassert>
#include <utility>

#include <gtkmm.h>

#include <gtkmm2ext/gtk_ui.h>

#include "ardour/midi_playlist.h"
#include "ardour/midi_region.h"
#include "ardour/midi_source.h"
#include "ardour/midi_diskstream.h"
#include "ardour/midi_track.h"
#include "ardour/smf_source.h"
#include "ardour/region_factory.h"

#include "automation_streamview.h"
#include "region_view.h"
#include "automation_region_view.h"
#include "automation_time_axis.h"
#include "canvas-simplerect.h"
#include "region_selection.h"
#include "selection.h"
#include "public_editor.h"
#include "ardour_ui.h"
#include "rgb_macros.h"
#include "gui_thread.h"
#include "utils.h"
#include "simplerect.h"
#include "simpleline.h"

using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Editing;

AutomationStreamView::AutomationStreamView (AutomationTimeAxisView& tv)
	: StreamView (*dynamic_cast<RouteTimeAxisView*>(tv.get_parent()),
		      new ArdourCanvas::Group(*tv.canvas_display()))
	, _controller(tv.controller())
	, _automation_view(tv)
{
	//canvas_rect->property_fill_color_rgba() = stream_base_color;
	canvas_rect->property_outline_color_rgba() = RGBA_BLACK;

	use_rec_regions = tv.editor().show_waveforms_recording ();
}

AutomationStreamView::~AutomationStreamView ()
{
}


RegionView*
AutomationStreamView::add_region_view_internal (boost::shared_ptr<Region> region, bool wfd, bool recording)
{
	if ( ! region) {
		cerr << "No region" << endl;
		return NULL;
	}

	if (wfd) {
		boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(region);
		if (mr)
			mr->midi_source()->load_model();
	}

	const boost::shared_ptr<AutomationControl> control
		= boost::dynamic_pointer_cast<AutomationControl>(
				region->control(_controller->controllable()->parameter()));

	boost::shared_ptr<AutomationList> list;
	if (control) {
		list = boost::dynamic_pointer_cast<AutomationList>(control->list());
		assert(!control->list() || list);
	}

	AutomationRegionView *region_view;
	std::list<RegionView *>::iterator i;

	for (i = region_views.begin(); i != region_views.end(); ++i) {
		if ((*i)->region() == region) {
			
			/* great. we already have an AutomationRegionView for this Region. use it again. */
			AutomationRegionView* arv = dynamic_cast<AutomationRegionView*>(*i);;

			if (arv->line())
				arv->line()->set_list (list);
			(*i)->set_valid (true);
			(*i)->enable_display(wfd);
			display_region(arv);

			return NULL;
		}
	}
	
	region_view = new AutomationRegionView (canvas_group, _automation_view, region,
			_controller->controllable()->parameter(), list,
			_samples_per_unit, region_color);
		
	region_view->init (region_color, false);
	region_views.push_front (region_view);
	
	/* follow global waveform setting */

	if (wfd) {
		region_view->enable_display(true);
		//region_view->midi_region()->midi_source(0)->load_model();
	}

	display_region(region_view);

	/* catch regionview going away */
	region->GoingAway.connect (bind (mem_fun (*this, &AutomationStreamView::remove_region_view), region));
	
	RegionViewAdded (region_view);

	return region_view;
}

void
AutomationStreamView::display_region(AutomationRegionView* region_view)
{
	region_view->line().reset();
}

void
AutomationStreamView::set_automation_state (AutoState state)
{
	std::list<RegionView *>::iterator i;
	for (i = region_views.begin(); i != region_views.end(); ++i) {
		boost::shared_ptr<AutomationLine> line = ((AutomationRegionView*)(*i))->line();
		if (line && line->the_list())
			line->the_list()->set_automation_state (state);
	}
}

void
AutomationStreamView::redisplay_diskstream ()
{
	list<RegionView *>::iterator i, tmp;

	// Flag region views as invalid and disable drawing
	for (i = region_views.begin(); i != region_views.end(); ++i) {
		(*i)->set_valid (false);
		(*i)->enable_display(false);
	}

	// Add and display region views, and flag them as valid
	if (_trackview.is_track()) {
		_trackview.get_diskstream()->playlist()->foreach_region (
			static_cast<StreamView*>(this), &StreamView::add_region_view);
	}
	
	// Stack regions by layer, and remove invalid regions
	layer_regions();
}


void
AutomationStreamView::setup_rec_box ()
{
}

void
AutomationStreamView::update_rec_regions (nframes_t start, nframes_t dur)
{
}

void
AutomationStreamView::rec_data_range_ready (jack_nframes_t start, jack_nframes_t dur)
{
	// this is called from the butler thread for now
	
	ENSURE_GUI_THREAD(bind (mem_fun (*this, &AutomationStreamView::rec_data_range_ready), start, dur));
	
	this->update_rec_regions (start, dur);
}

void
AutomationStreamView::color_handler ()
{
	/*if (_trackview.is_midi_track()) {
		canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
	} 

	if (!_trackview.is_midi_track()) {
		canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
	}*/
}