Max 5 API Reference

simpletext.c

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/**
    @file
    simpletext - show use of text reading and editing

    @ingroup    examples    
*/

#include "ext.h"                            // standard Max include, always required
#include "ext_obex.h"                       // required for new style Max object


////////////////////////// object struct
typedef struct _simpletext 
{
    t_object ob;            // the object itself (must be first)
    t_object *t_editor;
    char **t_text;
    long t_size;
} t_simpletext;

///////////////////////// function prototypes
//// standard set
void *simpletext_new(t_symbol *s, long argc, t_atom *argv);
void simpletext_free(t_simpletext *x);
void simpletext_assist(t_simpletext *x, void *b, long m, long a, char *s);
void simpletext_read(t_simpletext *x, t_symbol *s);
void simpletext_doread(t_simpletext *x, t_symbol *s, long argc, t_atom *argv);
void simpletext_dblclick(t_simpletext *x);
void simpletext_edclose(t_simpletext *x, char **text, long size);
//////////////////////// global class pointer variable
void *simpletext_class;


int main(void)
{   
    t_class *c;
    
    c = class_new("simpletext", (method)simpletext_new, (method)simpletext_free, (long)sizeof(t_simpletext), 
                  0L, A_GIMME, 0);
    
    class_addmethod(c, (method)simpletext_read,         "read",     A_DEFSYM, 0);  
    class_addmethod(c, (method)simpletext_dblclick,     "dblclick", A_CANT, 0);  
    class_addmethod(c, (method)simpletext_edclose,      "edclose",  A_CANT, 0);  
    
    class_register(CLASS_BOX, c);
    simpletext_class = c;

    return 0;
}

void simpletext_assist(t_simpletext *x, void *b, long m, long a, char *s)
{
    if (m == ASSIST_INLET)
        sprintf(s, "Message In");
}

void simpletext_free(t_simpletext *x)
{
    if (x->t_text)
        sysmem_freehandle(x->t_text);
}

void simpletext_read(t_simpletext *x, t_symbol *s)
{
    defer((t_object *)x, (method)simpletext_doread, s, 0, NULL);
}

void simpletext_dblclick(t_simpletext *x)
{
    if (x->t_editor)
        object_attr_setchar(x->t_editor, gensym("visible"), 1); 
    else {
        x->t_editor = object_new(CLASS_NOBOX, gensym("jed"), x, 0); 
        object_method(x->t_editor, gensym("settext"), *x->t_text, gensym("utf-8")); 
        object_attr_setchar(x->t_editor, gensym("scratch"), 1); 
        object_attr_setsym(x->t_editor, gensym("title"), gensym("simpletext"));
    }
}

void simpletext_doread(t_simpletext *x, t_symbol *s, long argc, t_atom *argv)
{
    char filename[MAX_PATH_CHARS];
    short path;
    long type = 'TEXT';
    long err;
    t_filehandle fh;
    
    if (s == gensym("")) {
        filename[0] = 0;

        if (open_dialog(filename, &path, &type, &type, 1)) 
            return;
    } else {
        strcpy(filename,s->s_name);
        if (locatefile_extended(filename,&path,&type,&type,1)) {
            object_error((t_object *)x, "can't find file %s",filename);
            return;
        }
    }
// success
    
    err = path_opensysfile(filename, path, &fh, READ_PERM);
    if (!err) {
        sysfile_readtextfile(fh, x->t_text, 0, TEXT_LB_UNIX | TEXT_NULL_TERMINATE);
        sysfile_close(fh);
        x->t_size = sysmem_handlesize(x->t_text);
    }
}

void simpletext_edclose(t_simpletext *x, char **text, long size)
{
    if (x->t_text)
        sysmem_freehandle(x->t_text);
        
    x->t_text = sysmem_newhandleclear(size+1);
    sysmem_copyptr((char *)*text, *x->t_text, size);
    x->t_size = size+1;
    x->t_editor = NULL;
}

void *simpletext_new(t_symbol *s, long argc, t_atom *argv)
{
    t_simpletext *x = NULL;
    
    x = (t_simpletext *)object_alloc(simpletext_class);
    
    x->t_text = sysmem_newhandle(0);
    x->t_size = 0;
    x->t_editor = NULL;
    return x;
}

Copyright © 2008, Cycling '74