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livetrax/gtk2_ardour/imageframe_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.
*/
#include <algorithm>
#include <gtkmm.h>
#include <gtkmm2ext/gtk_ui.h>
#include "imageframe_time_axis_view.h"
#include "imageframe_time_axis_group.h"
#include "imageframe_view.h"
#include "imageframe_time_axis.h"
#include "canvas-simplerect.h"
#include "region_selection.h"
#include "public_editor.h"
#include "rgb_macros.h"
#include "gui_thread.h"
#include "ardour_ui.h"
#include "i18n.h"
using namespace ARDOUR ;
using namespace Editing;
//---------------------------------------------------------------------------------------//
// Constructor / Desctructor
/**
* Constructs a new ImageFrameTimeAxisView.
*
* @param ifta the parent ImageFrameTimeAxis of this view helper
*/
ImageFrameTimeAxisView::ImageFrameTimeAxisView (ImageFrameTimeAxis& tv)
: _trackview (tv),
canvas_group (*_trackview.canvas_display),
canvas_rect (canvas_group, 0.0, 0.0, 1000000.0, tv.height)
{
region_color = _trackview.color() ;
stream_base_color = ARDOUR_UI::config()->canvasvar_ImageTrack.get() ;
canvas_rect.property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ImageTrack.get();
canvas_rect.property_fill_color_rgba() = stream_base_color;
canvas_rect.signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_imageframe_view_event), (ArdourCanvas::Item*) &canvas_rect, &tv));
_samples_per_unit = _trackview.editor.get_current_zoom() ;
_trackview.editor.ZoomChanged.connect (mem_fun(*this, &ImageFrameTimeAxisView::reset_samples_per_unit)) ;
selected_imageframe_group = 0 ;
selected_imageframe_view = 0 ;
}
/**
* Destructor
* Responsible for destroying all items tat may have been added to this time axis
*/
ImageFrameTimeAxisView::~ImageFrameTimeAxisView()
{
// Destroy all the ImageFrameGroups that we have
for(ImageFrameGroupList::iterator iter = imageframe_groups.begin(); iter != imageframe_groups.end(); ++iter)
{
ImageFrameTimeAxisGroup* iftag = (*iter) ;
ImageFrameGroupList::iterator next = iter ;
next++ ;
// remove the front element
imageframe_groups.erase(iter) ;
delete iftag ;
iftag = 0 ;
iter = next ;
}
}
//---------------------------------------------------------------------------------------//
// ui methods & data
/**
* Sets the height of the time axis view and the item upon it
*
* @param height the new height
*/
int
ImageFrameTimeAxisView::set_height (gdouble h)
{
/* limit the values to something sane-ish */
if (h < 10.0 || h > 1000.0) {
return(-1) ;
}
canvas_rect.property_y2() = h ;
for(ImageFrameGroupList::const_iterator citer = imageframe_groups.begin(); citer != imageframe_groups.end(); ++citer)
{
(*citer)->set_item_heights(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 npon the canvas
*/
int
ImageFrameTimeAxisView::set_position (gdouble x, gdouble y)
{
canvas_group.property_x() = x;
canvas_group.property_y() = y;
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
ImageFrameTimeAxisView::set_samples_per_unit (gdouble spp)
{
if (spp < 1.0) {
return(-1) ;
}
_samples_per_unit = spp;
for(ImageFrameGroupList::const_iterator citer = imageframe_groups.begin(); citer != imageframe_groups.end(); ++citer)
{
(*citer)->set_item_samples_per_units(spp) ;
}
return(0) ;
}
/**
* Sets the color of the items contained uopn this view helper
*
* @param color the new base color
*/
void
ImageFrameTimeAxisView::apply_color(Gdk::Color& color)
{
region_color = color ;
for(ImageFrameGroupList::const_iterator citer = imageframe_groups.begin(); citer != imageframe_groups.end(); citer++)
{
(*citer)->apply_item_color(region_color) ;
}
}
/**
* convenience method to re-get the samples per unit and tell items upon this view
*
*/
void
ImageFrameTimeAxisView::reset_samples_per_unit ()
{
set_samples_per_unit (_trackview.editor.get_current_zoom());
}
//---------------------------------------------------------------------------------------//
// Child ImageFrameTimeAxisGroup Accessors/Mutators
/**
* Adds an ImageFrameTimeAxisGroup to the list of items upon this time axis view helper
* the new ImageFrameTimeAxisGroup is returned
*
* @param group_id the unique id of the new group
* @param src the identity of the object that initiated the change
*/
ImageFrameTimeAxisGroup*
ImageFrameTimeAxisView::add_imageframe_group(std::string group_id, void* src)
{
ImageFrameTimeAxisGroup* iftag = 0 ;
//check that there is not already a group with that id
if(get_named_imageframe_group(group_id) != 0)
{
// iftag = 0 ;
}
else
{
iftag = new ImageFrameTimeAxisGroup(*this, group_id) ;
imageframe_groups.push_front(iftag) ;
iftag->GoingAway.connect(bind(mem_fun(*this,&ImageFrameTimeAxisView::remove_imageframe_group), iftag, (void*)this)) ;
ImageFrameGroupAdded(iftag, src) ; /* EMIT_SIGNAL */
}
return(iftag) ;
}
/**
* Returns the named ImageFrameTimeAxisGroup or 0 if the named group does not exist on this view helper
*
* @param group_id the unique id of the group to search for
* @return the named ImageFrameTimeAxisGroup, or 0 if it is not held upon this view
*/
ImageFrameTimeAxisGroup*
ImageFrameTimeAxisView::get_named_imageframe_group(std::string group_id)
{
ImageFrameTimeAxisGroup* iftag = 0 ;
for(ImageFrameGroupList::iterator i = imageframe_groups.begin(); i != imageframe_groups.end(); ++i)
{
if (((ImageFrameTimeAxisGroup*)*i)->get_group_name() == group_id)
{
iftag = ((ImageFrameTimeAxisGroup*)*i) ;
break ;
}
}
return(iftag) ;
}
/**
* Removes and returns the named ImageFrameTimeAxisGroup from the list of ImageFrameTimeAxisGroup held by this view helper
*
* @param group_id the ImageFrameTimeAxisGroup unique id to remove
* @param src the identity of the object that initiated the change
* @see add_imageframe_group
*/
ImageFrameTimeAxisGroup*
ImageFrameTimeAxisView::remove_named_imageframe_group(std::string group_id, void* src)
{
ImageFrameTimeAxisGroup* removed = 0 ;
for(ImageFrameGroupList::iterator iter = imageframe_groups.begin(); iter != imageframe_groups.end(); ++iter)
{
if(((ImageFrameTimeAxisGroup*)*iter)->get_group_name() == group_id)
{
removed = (*iter) ;
imageframe_groups.erase(iter) ;
if(removed == selected_imageframe_group)
{
selected_imageframe_group = 0 ;
}
ImageFrameGroupRemoved(removed->get_group_name(), src) ; /* EMIT_SIGNAL */
// break from the for loop
break ;
}
iter++ ;
}
return(removed) ;
}
/**
* Removes the specified ImageFrameTimeAxisGroup from the list of ImageFrameTimeAxisGroups upon this TimeAxis.
*
* @param iftag the ImageFrameView to remove
*/
void
ImageFrameTimeAxisView::remove_imageframe_group(ImageFrameTimeAxisGroup* iftag, void* src)
{
ENSURE_GUI_THREAD(bind (mem_fun(*this, &ImageFrameTimeAxisView::remove_imageframe_group), iftag, src));
ImageFrameGroupList::iterator i;
if((i = find (imageframe_groups.begin(), imageframe_groups.end(), iftag)) != imageframe_groups.end())
{
imageframe_groups.erase(i) ;
ImageFrameGroupRemoved(iftag->get_group_name(), src) ; /* EMIT_SIGNAL */
}
}
//---------------------------------------------------------------------------------------//
// Selected group methods
/**
* Sets the currently selected group upon this time axis
*
* @param ifv the item to set selected
*/
void
ImageFrameTimeAxisView::set_selected_imageframe_group(ImageFrameTimeAxisGroup* iftag)
{
if(selected_imageframe_group)
{
selected_imageframe_group->set_selected(false) ;
}
selected_imageframe_group = iftag ;
selected_imageframe_group->set_selected(true) ;
}
/**
* Clears the currently selected image frame group unpo this time axis
*
*/
void
ImageFrameTimeAxisView::clear_selected_imageframe_group()
{
if(selected_imageframe_group)
{
selected_imageframe_group->set_selected(false) ;
}
selected_imageframe_group = 0 ;
}
/**
* Returns the currently selected group upon this time axis
*
* @return the currently selected group upon this time axis
*/
ImageFrameTimeAxisGroup*
ImageFrameTimeAxisView::get_selected_imageframe_group() const
{
return(selected_imageframe_group) ;
}
//---------------------------------------------------------------------------------------//
// Selected item methods
/**
* Sets the currently selected imag frame view item
*
* @param iftag the group the selected item is part
* @param ifv the selected item
*/
void
ImageFrameTimeAxisView::set_selected_imageframe_view(ImageFrameTimeAxisGroup* iftag, ImageFrameView* ifv)
{
set_selected_imageframe_group(iftag) ;
if(selected_imageframe_view)
{
selected_imageframe_view->set_selected(false) ;
}
selected_imageframe_view = ifv ;
selected_imageframe_view->set_selected(true) ;
}
/**
* Clears the currently selected image frame view item
*
*/
void
ImageFrameTimeAxisView::clear_selected_imageframe_item(bool clear_group)
{
if(clear_group)
{
clear_selected_imageframe_group() ;
}
if(selected_imageframe_view)
{
selected_imageframe_view->set_selected(false) ;
}
selected_imageframe_view = 0 ;
}
/**
* Returns the currently selected image frame view item upon this time axis
*
* @return the currently selected image frame view item
*/
ImageFrameView*
ImageFrameTimeAxisView::get_selected_imageframe_view() const
{
return(selected_imageframe_view) ;
}
void
ImageFrameTimeAxisView::set_imageframe_duration_sec(double sec)
{
if(selected_imageframe_group && selected_imageframe_view)
{
selected_imageframe_view->set_duration((nframes_t) (sec * _trackview.editor.current_session()->frame_rate()), this) ;
}
}
/**
* Removes the currently selected ImageFrame view item
*
* @param src the identity of the object that initiated the change
* @see add_imageframe_group
*/
void
ImageFrameTimeAxisView::remove_selected_imageframe_item(void* src)
{
if(selected_imageframe_group && selected_imageframe_view)
{
ImageFrameView* temp_item = selected_imageframe_view ;
selected_imageframe_group->remove_imageframe_item(temp_item, src) ;
// XXX although we have removed the item from the group, we need the group id still set within the
// item as the remove method requires this data when telling others about the deletion
// to fully specify the item we need the track, group and item id
selected_imageframe_view->remove_this_item(src) ;
clear_selected_imageframe_item(false) ;
}
}