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livetrax/gtk2_ardour/marker_time_axis_view.cc

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/*
Copyright (C) 2003 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 <algorithm>
#include <gtkmm.h>
#include <gtkmm2ext/gtk_ui.h>
#include "marker_time_axis_view.h"
#include "marker_time_axis.h"
#include "marker_view.h"
#include "imageframe_view.h"
#include "imageframe_time_axis.h"
#include "canvas-simplerect.h"
#include "public_editor.h"
#include "rgb_macros.h"
#include "gui_thread.h"
#include "i18n.h"
using namespace ARDOUR ;
using namespace Editing;
//---------------------------------------------------------------------------------------//
// Constructor / Desctructor
/**
* Construct a new MarkerTimeAxisView helper time axis helper
*
* @param mta the TimeAxsiView that this objbect is the helper for
*/
MarkerTimeAxisView::MarkerTimeAxisView(MarkerTimeAxis& tv)
: _trackview (tv)
{
region_color = _trackview.color();
stream_base_color = color_map[cMarkerTrackBase];
canvas_group = gnome_canvas_item_new (GNOME_CANVAS_GROUP(_trackview.canvas_display), gnome_canvas_group_get_type (), 0);
canvas_rect = gnome_canvas_item_new (GNOME_CANVAS_GROUP(canvas_group),
gnome_canvas_simplerect_get_type(),
"x1", 0.0,
"y1", 0.0,
"x2", 1000000.0,
"y2", (double)20,
"outline_color_rgba", color_map[cMarkerTrackOutline],
"fill_color_rgba", stream_base_color,
0) ;
gtk_signal_connect(GTK_OBJECT(canvas_rect), "event", (GtkSignalFunc)PublicEditor::canvas_marker_time_axis_view_event, &_trackview) ;
_samples_per_unit = _trackview.editor.get_current_zoom() ;
_trackview.editor.ZoomChanged.connect (mem_fun(*this, &MarkerTimeAxisView::reset_samples_per_unit));
}
/**
* Destructor
* Reposinsibly for destroying all marker items that may have been added to this time axis view
*
*/
MarkerTimeAxisView::~MarkerTimeAxisView()
{
// destroy everything upon this view
for(MarkerViewList::iterator iter = marker_view_list.begin(); iter != marker_view_list.end(); ++iter)
{
MarkerView* mv = (*iter) ;
MarkerViewList::iterator next = iter ;
next++ ;
marker_view_list.erase(iter) ;
delete mv ;
mv = 0 ;
iter = next ;
}
if(canvas_rect)
{
gtk_object_destroy(GTK_OBJECT(canvas_rect)) ;
canvas_rect = 0 ;
}
if(canvas_group)
{
gtk_object_destroy(GTK_OBJECT(canvas_group)) ;
canvas_group = 0 ;
}
}
//---------------------------------------------------------------------------------------//
// ui methods & data
/**
* Sets the height of the time axis view and the item upon it
*
* @param height the new height
*/
int
MarkerTimeAxisView::set_height(gdouble h)
{
if (h < 10.0 || h > 1000.0)
{
return -1 ;
}
gtk_object_set (GTK_OBJECT(canvas_rect), "y2", h, NULL);
for (MarkerViewList::iterator i = marker_view_list.begin(); i != marker_view_list.end(); ++i)
{
(*i)->set_height(h) ;
}
return 0;
}
/**
* Sets the position of this view helper on the canvas
*
* @param x the x position upon the canvas
* @param y the y position upon the canvas
*/
int
MarkerTimeAxisView::set_position(gdouble x, gdouble y)
{
gnome_canvas_item_set (canvas_group, "x", x, "y", y, NULL);
return 0;
}
/**
* Sets the current samples per unit.
* this method tells each item upon the time axis of the change
*
* @param spu the new samples per canvas unit value
*/
int
MarkerTimeAxisView::set_samples_per_unit(gdouble spp)
{
if(spp < 1.0) {
return -1 ;
}
_samples_per_unit = spp ;
for(MarkerViewList::iterator i = marker_view_list.begin(); i != marker_view_list.end(); ++i)
{
(*i)->set_samples_per_unit(spp) ;
}
return(0) ;
}
/**
* Sets the color of the items contained upon this view helper
*
* @param color the new base color
*/
void
MarkerTimeAxisView::apply_color(Gdk::Color& color)
{
region_color = color;
for (MarkerViewList::iterator i = marker_view_list.begin(); i != marker_view_list.end(); i++)
{
(*i)->set_color (region_color) ;
}
}
//---------------------------------------------------------------------------------------//
// Child MarkerView Accessors/Mutators
/**
* Adds a marker view to the list of items upon this time axis view helper
* the new MarkerView is returned
*
* @param ifv the ImageFrameView that the new item is marking up
* @param mark_text the text to be displayed uopn the new marker item
* @param mark_id the unique id of the new item
* @param start the position the new item should be placed upon the time line
* @param duration the duration the new item should be placed upon the timeline
* @param src the identity of the object that initiated the change
*/
MarkerView*
MarkerTimeAxisView::add_marker_view(ImageFrameView* ifv, std::string mark_type, std::string mark_id, jack_nframes_t start, jack_nframes_t dur, void* src)
{
if(ifv->has_marker_view_item(mark_id))
{
return(0) ;
}
MarkerView* mv = new MarkerView(GNOME_CANVAS_GROUP(canvas_group),
&_trackview,
ifv,
_trackview.editor.get_current_zoom(),
region_color,
mark_type,
mark_id,
start,
dur) ;
ifv->add_marker_view_item(mv, src) ;
marker_view_list.push_front(mv) ;
mv->GoingAway.connect(bind (mem_fun(*this,&MarkerTimeAxisView::remove_marker_view), (void*)this)) ;
MarkerViewAdded(mv,src) ; /* EMIT_SIGNAL */
return(mv) ;
}
/**
* Returns the named MarkerView or 0 if the named marker does not exist
*
* @param item_id the unique id of the item to search for
* @return the named MarkerView, or 0 if it is not held upon this view
*/
MarkerView*
MarkerTimeAxisView::get_named_marker_view(std::string item_id)
{
MarkerView* mv = 0 ;
for(MarkerViewList::iterator i = marker_view_list.begin(); i != marker_view_list.end(); ++i)
{
if(((MarkerView*)*i)->get_item_name() == item_id)
{
mv = ((MarkerView*)*i) ;
break ;
}
}
return(mv) ;
}
/**
* Removes the currently selected MarverView
* Note that this method actually destroys the MarkerView too.
* We assume that since we own the object, we are allowed to do this
*
* @param src the identity of the object that initiated the change
* @see add_marker_view
*/
void
MarkerTimeAxisView::remove_selected_marker_view(void* src)
{
std::string removed ;
if (selected_time_axis_item)
{
MarkerViewList::iterator i ;
if((i = find (marker_view_list.begin(), marker_view_list.end(), selected_time_axis_item)) != marker_view_list.end())
{
marker_view_list.erase(i) ;
MarkerViewRemoved(selected_time_axis_item->get_item_name(),src) ; /* EMIT_SIGNAL */
delete(selected_time_axis_item) ;
selected_time_axis_item = 0 ;
}
}
else
{
//No selected marker view
}
}
/**
* Removes and returns the named MarkerView from the list of MarkerView held by this view helper
*
* @param item_id the MarkerView unique id to remove
* @param src the identity of the object that initiated the change
* @see add_marker_view
*/
MarkerView*
MarkerTimeAxisView::remove_named_marker_view(std::string item_id, void* src)
{
MarkerView* mv = 0 ;
MarkerViewList::iterator i = marker_view_list.begin() ;
for(MarkerViewList::iterator iter = marker_view_list.begin(); iter != marker_view_list.end(); ++iter)
{
if(((MarkerView*)*i)->get_item_name() == item_id)
{
mv = ((MarkerView*)*i) ;
marker_view_list.erase(i) ;
MarkerViewRemoved(mv->get_item_name(), src) ; /* EMIT_SIGNAL */
// break from the for loop
break;
}
i++ ;
}
return(mv) ;
}
/**
* Removes mv from the list of MarkerView upon this TimeAxis
*
* @param mv the MarkerView to remove
* @param src the identity of the object that initiated the change
*/
void
MarkerTimeAxisView::remove_marker_view(MarkerView* mv, void* src)
{
ENSURE_GUI_THREAD(bind (mem_fun(*this, &MarkerTimeAxisView::remove_marker_view), mv, src));
MarkerViewList::iterator i;
if((i = find (marker_view_list.begin(), marker_view_list.end(), mv)) != marker_view_list.end()) {
marker_view_list.erase(i) ;
// Assume this remove happened locally, else use remove_named_marker_time_axis
// let listeners know that the named MarkerTimeAxis has been removed
MarkerViewRemoved(mv->get_item_name(), src) ; /* EMIT_SIGNAL */
}
}
/**
* Sets the duration of the selected MarkerView to the specified number of seconds
*
* @param sec the duration to set the MArkerView to, in seconds
*/
void
MarkerTimeAxisView::set_marker_duration_sec(double sec)
{
if(get_selected_time_axis_item() != 0)
{
get_selected_time_axis_item()->set_duration((jack_nframes_t) (sec * _trackview.editor.current_session()->frame_rate()), this) ;
}
}
//---------------------------------------------------------------------------------------//
// Selected item methods
/**
* Sets the currently selected item upon this time axis
*
* @param mv the item to set selected
*/
void
MarkerTimeAxisView::set_selected_time_axis_item(MarkerView* mv)
{
selected_time_axis_item = mv ;
}
/**
* Clears any selected item upon this time axis
*
*/
void
MarkerTimeAxisView::clear_selected_time_axis_item()
{
selected_time_axis_item = 0 ;
}
/**
* Returnsthe currently selected item upon this time axis
*
* @return the currently selected item pon this time axis
*/
MarkerView*
MarkerTimeAxisView::get_selected_time_axis_item()
{
return(selected_time_axis_item) ;
}
/**
* convenience method to re-get the samples per unit and tell items upon this view
*
*/
void
MarkerTimeAxisView::reset_samples_per_unit ()
{
set_samples_per_unit(_trackview.editor.get_current_zoom()) ;
}