hvirtual/cinelerra/labels.C

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#include "clip.h"
#include "edl.h"
#include "edlsession.h"
#include "filexml.h"
#include "labels.h"
#include "mwindow.h"
#include "mwindowgui.h"
#include "patchbay.h"
#include "recordlabel.h"
#include "mainsession.h"
#include "stringfile.h"
#include "theme.h"
#include "timebar.h"
#include <string.h>



Labels::Labels(EDL *edl, char *xml_tag)
 : List<Label>()
{
        this->edl = edl;
        this->xml_tag = xml_tag;
}

Labels::~Labels()
{
        delete_all();
}

void Labels::dump()
{
        for(Label *current = first; current; current = NEXT)
        {
                printf("  label: %f '%s'\n", current->position, current->textstr);
        }
}

void Labels::insert_labels(Labels *labels, double start, double length, int paste_silence)
{
        Label *new_label;
        Label *old_label;


//printf("Labels::insert_labels 1 %f\n", start);

// Insert silence in old labels
        if(paste_silence)
        {
                for(old_label = first; old_label; old_label = old_label->next)
                {
                        if(old_label->position > start ||
                                edl->equivalent(old_label->position, start))
                                old_label->position += length;
                }
        }


// Insert one new label at a time
        for(new_label = labels->first; new_label; new_label = new_label->next)
        {
                int exists = 0;
//printf("Labels::insert_labels 2 %f\n", new_label->position + start);

// Check every old label for existence
                for(old_label = first; old_label; old_label = old_label->next)
                {
                        if(edl->equivalent(old_label->position, new_label->position + start))
                        {
                                exists = 1;
                                break;
                        }
                        else
                        if(old_label->position > new_label->position + start)
                                break;
                }

                if(!exists)
                {
                        if(old_label)
                                insert_before(old_label, new Label(edl, this, new_label->position + start, new_label->textstr));
                        else
                                append(new Label(edl, this, new_label->position + start, new_label->textstr));
                }
        }
}

int Labels::toggle_label(double start, double end)
{
        Label *current;
//printf("Labels::toggle_label 1 %f %f\n", start, end);

// handle selection start
// find label the selectionstart is after
        for(current = first; 
                current && current->position < start && !edl->equivalent(current->position, start); 
                current = NEXT)
        {
//printf("Labels::toggle_label 2 %f %f %f\n", start, end, current->position);
                ;
        }

        if(current)
        {
//printf("Labels::toggle_label 3 %f %f %f\n", start, end, current->position);
                if(edl->equivalent(current->position, start))
                {        // remove it
//printf("Labels::toggle_label 1\n");
                        remove(current);
                }
                else
                {        // insert before it
                        current = insert_before(current, new Label(edl, this, start, ""));
                }
        }
        else
        {           // insert after last
//printf("Labels::toggle_label 1\n");
                current = append(new Label(edl, this, start, ""));
        }

// handle selection end
        if(!EQUIV(start, end))
        {
//printf("Labels::toggle_label 2 %.16e %.16e\n", start, end);
// find label the selectionend is after
                for(current = first; 
                        current && current->position < end && !edl->equivalent(current->position, end); 
                        current = NEXT)
                {
                        ;
                }

                if(current)
                {
                        if(edl->equivalent(current->position, end))
                        {
                                remove(current);
                        }
                        else
                        {
                                current = insert_before(current, new Label(edl, this, end, ""));
                        }
                }
                else
                {
                        current = append(new Label(edl, this, end, ""));
                }
        }
        return 0;
}

int Labels::delete_all()
{
        while(last)
                remove(last);
        return 0;
}

int Labels::copy(double start, double end, FileXML *xml)
{
        char string[BCTEXTLEN];
        xml->tag.set_title(xml_tag);
        xml->append_tag();
        xml->append_newline();

        Label *current;
        sprintf(string, "/%s", xml_tag);
        string[strlen(string) - 1] = 0; // remove trailing "S" on "LABELS" giving "LABEL"
        for(current = label_of(start); 
                current && current->position <= end; 
                current = NEXT)
        {
                xml->tag.set_title(string+1); // skip the "/" for opening tag
                xml->tag.set_property("TIME", (double)current->position - start);
                xml->tag.set_property("TEXTSTR", current->textstr);
//printf("Labels::copy %f\n", current->position - start);
                xml->append_tag();
                xml->tag.set_title(string); // closing tag
                xml->append_tag();
                xml->append_newline();
        }
        
        sprintf(string, "/%s", xml_tag);
        xml->tag.set_title(string);
        xml->append_tag();
        xml->append_newline();
        xml->append_newline();
        return 0;
}

int Labels::copy_length(long start, long end) // return number of Labels in selection
{
        int result = 0;
        Label *current;
        
        for(current = label_of(start); current && current->position <= end; current = NEXT)
        {
                result++;
        }
        return result;
}

void Labels::copy_from(Labels *labels)
{
        while(last) delete last;

        for(Label *current = labels->first; current; current = NEXT)
        {
                append(new Label(edl, this, current->position, current->textstr));
        }
}


Labels& Labels::operator=(Labels &that)
{
        copy_from(&that);
printf("Labels::operator= 1\n");
        return *this;
}


int Labels::save(FileXML *xml)
// Note: Normally the saving of Labels is done by Labels::copy()
{
        xml->tag.set_title("LABELS");
        xml->append_tag();
        xml->append_newline();

        Label *current;

        for(current = first; current; current = NEXT)
        {
                xml->tag.set_title("LABEL");
                xml->tag.set_property("TIME", (double)current->position);
                xml->tag.set_property("TEXTSTR", current->textstr);
                xml->append_tag();
                xml->tag.set_title("/LABEL");
                xml->append_tag();
                xml->append_newline();
        }
        
        xml->append_newline();
        xml->tag.set_title("/LABELS");
        xml->append_tag();
        xml->append_newline();
        xml->append_newline();
        return 0;
}

int Labels::load(FileXML *xml, uint32_t load_flags)
{
        int result = 0;
        char string1[BCTEXTLEN], string2[BCTEXTLEN];

        sprintf(string1, "/%s", xml_tag);
        strcpy(string2, xml_tag);
        string2[strlen(string2) - 1] = 0;

        do{
                result = xml->read_tag();
                if(!result)
                {
                        if(xml->tag.title_is(string1))
                        {
                                result = 1;
                        }
                        else
                        if(xml->tag.title_is(string2))
                        {
                                double position = xml->tag.get_property("TIME", (double)-1);
                                if(position < 0)
                                        position = xml->tag.get_property("SAMPLE", (double)-1);
//printf("Labels::load %f\n", position);
                                if(position > -1)
                                {
                                        Label *current = label_of(position);
                                        current = insert_before(current, new Label(edl, this, position, ""));
                                        xml->tag.get_property("TEXTSTR", current->textstr);
                                }
                        }
                        else
                        if(xml->tag.title_is("INPOINT"))
                        {
                                double position = xml->tag.get_property("TIME", (double)-1);
                                if(position < 0)
                                        position = xml->tag.get_property("SAMPLE", (double)-1);
                                if(position > -1)
                                {
                                        ;
                                }
                        }
                        else
                        if(xml->tag.title_is("OUTPOINT"))
                        {
                                double position = xml->tag.get_property("TIME", (double)-1);
                                if(position < 0)
                                        position = xml->tag.get_property("SAMPLE", (double)-1);
                                if(position > -1)
                                {
                                        ;
                                }
                        }
                }
        }while(!result);
        return 0;
}



int Labels::clear(double start, double end, int follow)
{
        Label *current;
        Label *next;

//printf("Labels::clear 1\n");
        current = label_of(start);
//printf("Labels::clear 2\n");
// remove selected labels
        while(current && current->position < end)
        {
                next = NEXT;
                delete current;              
                current = next;
        }
// Shift later labels
//printf("Labels::clear 3\n");
        if(follow)
        {
                while(current)
                {
                        current->position -= end - start;   // shift labels forward
                        current = NEXT;
                }
//printf("Labels::clear 4\n");
                optimize();
//printf("Labels::clear 5\n");
        }

        return 0;
}


Label* Labels::prev_label(double position)
{
        Label *current;

// Test for label under cursor position
        for(current = first; 
                current && !edl->equivalent(current->position, position); 
                current = NEXT)
                ;

// Test for label after cursor position
        if(!current)
                for(current = first;
                        current && current->position < position;
                        current = NEXT)
                        ;

// Test for label before cursor position
        if(!current) 
                current = last;
        else
// Get previous label
                current = PREVIOUS;

        return current;
}

Label* Labels::next_label(double position)
{
        Label *current;

// Test for label under cursor position
        for(current = first; 
                current && !edl->equivalent(current->position, position); 
                current = NEXT)
                ;

// Test for label before cursor position
        if(!current)
                for(current = last;
                        current && current->position > position;
                        current = PREVIOUS)
                        ;

// Test for label after cursor position
        if(!current)
                current = first;
        else
// Get next label
                current = NEXT;

        return current;
}

int Labels::insert(double start, double length)
{      // shift every label including the first one back
        Label *current;

        for(current = label_of(start); current; current = NEXT)
        {
                current->position += length;
        }
        return 0;
}

int Labels::paste_silence(double start, double end)
{
        insert(start, end - start);
        optimize();
        return 0;
}

int Labels::modify_handles(double oldposition, 
        double newposition, 
        int currentend, 
        int handle_mode,
        int edit_labels)
{
        if(edit_labels &&
                handle_mode == MOVE_ALL_EDITS)
        {
                if(currentend == 0)          // left handle
                {
                        if(newposition < oldposition)
                        {
                                insert(oldposition, oldposition - newposition);    // shift all labels right
                        }
                        else
                        {
                                clear(oldposition, newposition);   // clear selection
                        }
                }
                else
                {                            // right handle
                        if(newposition < oldposition)
                        {
                                clear(newposition, oldposition);
                        }
                        else
                        {
                                insert(oldposition, newposition - oldposition);
                        }
                }
        }
        return 0;
}

int Labels::optimize()
{
        int result = 1;
        Label *current;

        while(result)
        {
                result = 0;
                
                for(current = first; current && NEXT && !result;)
                {
                        Label *next = NEXT;
                        if(current->position == next->position)
                        {
                                delete current;
                                result  = 1;
                        }
                        current = next;
                }
        }
        return 0;
}

Label* Labels::label_of(double position)
{
        Label *current;

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










Label::Label()
 : ListItem<Label>()
{
}

Label::Label(EDL *edl, Labels *labels, double position, char *textstr = 0)
 : ListItem<Label>()
{
        this->edl = edl;
        this->labels = labels;
        this->position = position;
        if (textstr)
                strcpy(this->textstr, textstr);
        else
                strcpy(this->textstr, "");
}


Label::~Label()
{
//      if(toggle) delete toggle;
}

LabelToggle::LabelToggle(MWindow *mwindow, 
        Label *label, 
        int x, 
        int y, 
        long position)
 : BC_Label(x, y, 0)
{
        this->mwindow = mwindow;
        this->label = label;
}

LabelToggle::~LabelToggle() { }

int LabelToggle::handle_event()
{
        return 0;
}

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