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/* Copyright (c) 2005 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* This is a prototype of an active comment. It might be replaced with
a new core object type, T_LINK (te_type bitfield would have to be
extended then). */
#include <stdio.h>
#include <string.h>
#ifdef _WIN32
# include <io.h>
#else
# include <unistd.h>
#endif
#include "m_pd.h"
#include "m_imp.h"
#include "g_canvas.h"
/* this isn't in any header, but its declared in s_path.c */
void open_via_helppath(const char *name, const char *dir);
typedef struct _helplink
{
t_object x_ob;
t_glist *x_glist;
int x_isgopvisible;
char *x_vistext;
int x_vissize;
int x_vislength;
int x_rtextactive;
t_symbol *x_ulink;
} t_helplink;
static t_class *helplink_class;
static void helplink_getrect(t_gobj *z, t_glist *glist,
int *xp1, int *yp1, int *xp2, int *yp2)
{
t_helplink *x = (t_helplink *)z;
int width, height;
float x1, y1, x2, y2;
if (glist->gl_editor && glist->gl_editor->e_rtext)
{
if (x->x_rtextactive)
{
t_rtext *y = glist_findrtext(glist, (t_text *)x);
width = rtext_width(y);
height = rtext_height(y) - 2;
}
else
{
int font = glist_getfont(glist);
width = x->x_vislength * sys_fontwidth(font) + 2;
height = sys_fontheight(font) + 2;
}
}
else width = height = 10;
x1 = text_xpix((t_text *)x, glist);
y1 = text_ypix((t_text *)x, glist) + 1;
x2 = x1 + width;
y2 = y1 + height + 1;
*xp1 = x1;
*yp1 = y1;
*xp2 = x2;
*yp2 = y2;
}
static void helplink_displace(t_gobj *z, t_glist *glist, int dx, int dy)
{
t_text *t = (t_text *)z;
t->te_xpix += dx;
t->te_ypix += dy;
if (glist_isvisible(glist))
{
t_rtext *y = glist_findrtext(glist, t);
rtext_displace(y, dx, dy);
}
}
static void helplink_select(t_gobj *z, t_glist *glist, int state)
{
t_helplink *x = (t_helplink *)z;
t_rtext *y = glist_findrtext(glist, (t_text *)x);
rtext_select(y, state);
if (glist_isvisible(glist) && glist->gl_havewindow)
{
if (state)
sys_vgui(".x%lx.c itemconfigure %s -fill blue\n",
glist, rtext_gettag(y));
else
sys_vgui(".x%lx.c itemconfigure %s -text {%s} -fill #0000dd -activefill #e70000\n",
glist, rtext_gettag(y), x->x_vistext);
}
}
static void helplink_activate(t_gobj *z, t_glist *glist, int state)
{
t_helplink *x = (t_helplink *)z;
t_rtext *y = glist_findrtext(glist, (t_text *)x);
rtext_activate(y, state);
x->x_rtextactive = state;
}
static void helplink_vis(t_gobj *z, t_glist *glist, int vis)
{
t_helplink *x = (t_helplink *)z;
t_rtext *y;
if (vis)
{
if ((glist->gl_havewindow || x->x_isgopvisible)
&& (y = glist_findrtext(glist, (t_text *)x)))
{
rtext_draw(y);
sys_vgui(".x%lx.c itemconfigure %s -text {%s} -fill #0000dd -activefill #e70000\n",
glist_getcanvas(glist), rtext_gettag(y), x->x_vistext);
}
}
else
{
if ((glist->gl_havewindow || x->x_isgopvisible)
&& (y = glist_findrtext(glist, (t_text *)x)))
rtext_erase(y);
}
}
static void helplink_doclick(t_helplink *x)
{
char* objectname = x->x_ulink->s_name;
char dirbuf[MAXPDSTRING], *nameptr;
int fd = canvas_open(x->x_glist, objectname, "-help.pd",
dirbuf, &nameptr, MAXPDSTRING, 0);
if (fd < 0) {
/* if canvas_open() failed try open_via_helppath() */
open_via_helppath(objectname, canvas_getdir(x->x_glist)->s_name);
} else {
/* if canvas_open() gave us a filehandle, then we have a helppatch to
* open in dirbuf and nameptr, but we don't need the filehandle */
close(fd);
glob_evalfile(NULL, gensym(nameptr), gensym(dirbuf));
}
}
static int helplink_click(t_gobj *z, t_glist *glist, int xpix, int ypix,
int shift, int alt, int dbl, int doit)
{
t_helplink *x = (t_helplink *)z;
if (glist->gl_havewindow || x->x_isgopvisible)
{
if (doit)
helplink_doclick(x);
return (1);
}
else
return (0);
}
static void helplink_free(t_helplink *x)
{
if (x->x_vistext)
freebytes(x->x_vistext, x->x_vissize);
}
static void *helplink_new(t_symbol *s)
{
t_helplink *x = (t_helplink *) pd_new(helplink_class);
x->x_isgopvisible = 0;
x->x_vistext = 0;
x->x_vissize = 0;
x->x_vislength = (x->x_vistext ? strlen(x->x_vistext) : 0);
x->x_rtextactive = 0;
x->x_glist = canvas_getcurrent();
if (s == &s_)
x->x_ulink = gensym("helplink"); /* default to helplink help patch */
else
x->x_ulink = s;
/* do we need to set ((t_text *)x)->te_type = T_TEXT; ? */
if (!x->x_vistext)
{
x->x_vislength = strlen(x->x_ulink->s_name);
x->x_vissize = x->x_vislength + 1;
x->x_vistext = getbytes(x->x_vissize);
strcpy(x->x_vistext, x->x_ulink->s_name);
}
return (x);
}
static t_widgetbehavior helplink_widgetbehavior =
{
helplink_getrect,
helplink_displace,
helplink_select,
helplink_activate,
0,
helplink_vis,
helplink_click,
};
void helplink_setup(void)
{
helplink_class = class_new(gensym("helplink"),
(t_newmethod)helplink_new,
(t_method)helplink_free,
sizeof(t_helplink),
CLASS_NOINLET | CLASS_PATCHABLE,
A_DEFSYMBOL, 0);
class_setwidget(helplink_class, &helplink_widgetbehavior);
}
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