hvirtual/cinelerra/recordlabel.C

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#include "clip.h"
#include "labels.h"
#include "recordlabel.h"


RecordLabel::RecordLabel(double position)
 : ListItem<RecordLabel>()
{ 
        this->position = position; 
}

RecordLabel::~RecordLabel()
{
}


RecordLabels::RecordLabels()
 : List<RecordLabel>()
{
}

RecordLabels::~RecordLabels()
{
}

int RecordLabels::delete_new_labels()
{
        RecordLabel *current, *next_;
        for(current = first; current; current = next_)
        {
                next_ = NEXT;
                remove(current);
        } 
        return 0;
}

int RecordLabels::toggle_label(double position)
{
        RecordLabel *current;
// find label the position is after
        for(current = first; 
                current && current->position < position; 
                current = NEXT)
        {
                ;
        }

        if(current)
        {
//printf("position %ld current->position %ld current->original %d\n", position, current->position,  current->original);
                if(EQUIV(current->position, position))
                {
// remove it
                        remove(current);
                }
                else
                {
// insert before it
                        insert_before(current);
                        current->position = position;
                }
        }
        else
        {           // insert after last
//printf("position %ld\n", position);
                append(new RecordLabel(position));
        }
        return 0;
}

double RecordLabels::get_prev_label(double position)
{
        RecordLabel *current;
        
        for(current = last; 
                current && current->position > position; 
                current = PREVIOUS)
        {
                ;
        }
//printf("%ld\n", current->position);
        if(current && current->position <= position)
                return current->position;
        else
                return -1;
        return 0;
}

double RecordLabels::get_next_label(double position)
{
        RecordLabel *current;

        for(current = first; 
                current && current->position <= position; 
                current = NEXT)
        {
                ;
        }
        if(current && current->position >= position) return current->position; else return -1;
        return 0;
}

double RecordLabels::goto_prev_label(double position)
{
        RecordLabel *current;
        
        for(current = last; 
                current && current->position >= position; 
                current = PREVIOUS)
        {
                ;
        }
//printf("%ld\n", current->position);
        if(current && current->position <= position) return current->position; else return -1;
        return 0;
}

double RecordLabels::goto_next_label(double position)
{
        RecordLabel *current;

        for(current = first; 
                current && current->position <= position; 
                current = NEXT)
        {
                ;
        }
        if(current && current->position >= position) return current->position; else return -1;
        return 0;
}

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