g_all_guis.c

/* Copyright (c) 1997-1999 Miller Puckette.
 * For information on usage and redistribution, and for a DISCLAIMER OF ALL
 * WARRANTIES, see the file, "LICENSE.txt," in this distribution. */

/* g_7_guis.c written by Thomas Musil (c) IEM KUG Graz Austria 2000-2001 */
/* thanks to Miller Puckette, Guenther Geiger and Krzystof Czaja */

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include "m_pd.h"
#include "g_canvas.h"
#include "m_imp.h"
#include "g_all_guis.h"
#include <math.h>

t_symbol *s_empty;
t_class *scalehandle_class;

int iemgui_color_hex[] = {
    0xfcfcfc, 0xa0a0a0, 0x404040, 0xfce0e0, 0xfce0c0, 0xfcfcc8, 0xd8fcd8, 0xd8fcfc, 0xdce4fc, 0xf8d8fc,
    0xe0e0e0, 0x7c7c7c, 0x202020, 0xfc2828, 0xfcac44, 0xe8e828, 0x14e814, 0x28f4f4, 0x3c50fc, 0xf430f0,
    0xbcbcbc, 0x606060, 0x000000, 0x8c0808, 0x583000, 0x782814, 0x285014, 0x004450, 0x001488, 0x580050
};

int iemgui_clip_size(int size) {return maxi(size,IEM_GUI_MINSIZE);}
int iemgui_clip_font(int size) {return maxi(size,IEM_FONT_MINSIZE);}
static void scalehandle_check_and_redraw(t_iemgui *x);

/* helper function to negate legacy draw offset for labels
*/
void iemgui_getrect_legacy_label(t_iemgui *x, int *xp1, int *yp1)
{
    *xp1 -= x->legacy_x;
    *yp1 -= x->legacy_y;
}

static int iemgui_modulo_color(int col)
{
    const int IEM_GUI_MAX_COLOR = 30;
    col %= IEM_GUI_MAX_COLOR;
    if (col<0) col += IEM_GUI_MAX_COLOR;
    return col;
}

t_symbol *iemgui_dollar2raute(t_symbol *s)
{
    char buf[MAXPDSTRING+1], *s1, *s2;
    if (strlen(s->s_name) >= MAXPDSTRING)
        return (s);
    for (s1 = s->s_name, s2 = buf; ; s1++, s2++)
    {
        if (*s1 == '$')
            *s2 = '#';
        else if (!(*s2 = *s1))
            break;
    }
    return(gensym(buf));
}

t_symbol *iemgui_raute2dollar(t_symbol *s)
{
    char buf[MAXPDSTRING+1], *s1, *s2;
    if (strlen(s->s_name) >= MAXPDSTRING)
        return (s);
    for (s1 = s->s_name, s2 = buf; ; s1++, s2++)
    {
        if (*s1 == '#')
            *s2 = '$';
        else if (!(*s2 = *s1))
            break;
    }
    return(gensym(buf));
}

void iemgui_verify_snd_ne_rcv(t_iemgui *x)
{
    x->x_put_in2out = 
        !(iemgui_has_snd(x) && iemgui_has_rcv(x) && x->x_snd==x->x_rcv);
}

t_symbol *iemgui_getfloatsym(t_atom *a)
{
    if (IS_A_SYMBOL(a,0)) return (atom_getsymbol(a));
    if (IS_A_FLOAT(a,0)) {
        char str[40];
        sprintf(str, "%d", (int)atom_getint(a));
        return gensym(str);
    }
    return s_empty;
}
t_symbol *iemgui_getfloatsymarg(int i, int argc, t_atom *argv)
{
    if (i>=0 && i<argc) return iemgui_getfloatsym(argv+i);
    return s_empty;
}

void iemgui_new_getnames(t_iemgui *x, int indx, t_atom *argv)
{
    if (argv)
    {
        x->x_snd = iemgui_getfloatsym(argv+indx+0);
        x->x_rcv = iemgui_getfloatsym(argv+indx+1);
        x->x_lab = iemgui_getfloatsym(argv+indx+2);
    }
    else x->x_snd = x->x_rcv = x->x_lab = s_empty;
    x->x_snd_unexpanded = x->x_rcv_unexpanded = x->x_lab_unexpanded = 0;
    x->x_binbufindex = indx;
    x->x_labelbindex = indx + 3;
}

/* initialize a single symbol in unexpanded form.  We reach into the
   binbuf to grab them; if there's nothing there, set it to the
   fallback; if still nothing, set to "empty". */
static void iemgui_init_sym2dollararg(t_iemgui *x, t_symbol **symp,
    int indx, t_symbol *fallback)
{
    if (!*symp)
    {
        t_binbuf *b = x->x_obj.ob_binbuf;
        if (binbuf_getnatom(b) > indx)
        {
            char buf[80];
            atom_string(binbuf_getvec(b) + indx, buf, 80);
            *symp = gensym(buf);
        }
        else if (fallback)
            *symp = fallback;
        else *symp = s_empty;
    }
}

/* get the unexpanded versions of the symbols; initialize them if necessary. */
void iemgui_all_sym2dollararg(t_iemgui *x, t_symbol **srlsym)
{
    iemgui_init_sym2dollararg(x, &x->x_snd_unexpanded, x->x_binbufindex+1, x->x_snd);
    iemgui_init_sym2dollararg(x, &x->x_rcv_unexpanded, x->x_binbufindex+2, x->x_rcv);
    iemgui_init_sym2dollararg(x, &x->x_lab_unexpanded, x->x_labelbindex, x->x_lab);
    srlsym[0] = x->x_snd_unexpanded;
    srlsym[1] = x->x_rcv_unexpanded;
    srlsym[2] = x->x_lab_unexpanded;
}

static int col2save(int col) {
    return -1-(((0xfc0000 & col) >> 6)|((0xfc00 & col) >> 4)|((0xfc & col) >> 2));
}
void iemgui_all_col2save(t_iemgui *x, int *bflcol)
{
    bflcol[0] = col2save(x->x_bcol);
    bflcol[1] = col2save(x->x_fcol);
    bflcol[2] = col2save(x->x_lcol);
}

static int colfromload(int col) {
    if(col)
    {
        col = -1-col;
        return ((col & 0x3f000) << 6)|((col & 0xfc0) << 4)|((col & 0x3f) << 2);
    }
    else
        return iemgui_color_hex[iemgui_modulo_color(col)];
}
void iemgui_all_colfromload(t_iemgui *x, int *bflcol)
{
    x->x_bcol = colfromload(bflcol[0]);
    x->x_fcol = colfromload(bflcol[1]);
    x->x_lcol = colfromload(bflcol[2]);
}

static int iemgui_compatible_col(int i)
{
    if(i >= 0)
        return(iemgui_color_hex[(iemgui_modulo_color(i))]);
    return((-1-i)&0xffffff);
}

void iemgui_all_raute2dollar(t_symbol **srlsym)
{
    srlsym[0] = iemgui_raute2dollar(srlsym[0]);
    srlsym[1] = iemgui_raute2dollar(srlsym[1]);
    srlsym[2] = iemgui_raute2dollar(srlsym[2]);
}

void iemgui_send(t_iemgui *x, t_symbol *s)
{
    t_symbol *snd;
    if (s == &s_) s = s_empty; //tb: fix for empty label
    int oldsndrcvable=0;
    if(iemgui_has_rcv(x)) oldsndrcvable += IEM_GUI_OLD_RCV_FLAG;
    if(iemgui_has_snd(x)) oldsndrcvable += IEM_GUI_OLD_SND_FLAG;

    snd = iemgui_raute2dollar(s);
    x->x_snd_unexpanded = snd;
    x->x_snd = snd = canvas_realizedollar(x->x_glist, snd);
    iemgui_verify_snd_ne_rcv(x);
    iemgui_draw_io(x, oldsndrcvable);
}

void iemgui_receive(t_iemgui *x, t_symbol *s)
{
    t_symbol *rcv;
    if (s == &s_) s = s_empty; //tb: fix for empty label
    int oldsndrcvable=0;
    if(iemgui_has_rcv(x)) oldsndrcvable += IEM_GUI_OLD_RCV_FLAG;
    if(iemgui_has_snd(x)) oldsndrcvable += IEM_GUI_OLD_SND_FLAG;

    rcv = iemgui_raute2dollar(s);
    x->x_rcv_unexpanded = rcv;
    rcv = canvas_realizedollar(x->x_glist, rcv);
    if(s!=s_empty)
    {
        if(rcv!=x->x_rcv)
        {
            if(iemgui_has_rcv(x))
                pd_unbind((t_pd *)x, x->x_rcv);
            x->x_rcv = rcv;
            pd_bind((t_pd *)x, x->x_rcv);
        }
    }
    else if(s==s_empty && iemgui_has_rcv(x))
    {
        pd_unbind((t_pd *)x, x->x_rcv);
        x->x_rcv = rcv;
    }
    iemgui_verify_snd_ne_rcv(x);
    iemgui_draw_io(x, oldsndrcvable);
}

void iemgui_label(t_iemgui *x, t_symbol *s)
{
    if (s == &s_) s = s_empty; //tb: fix for empty label
    t_symbol *lab = iemgui_raute2dollar(s);
    x->x_lab_unexpanded = lab;
    x->x_lab = lab = canvas_realizedollar(x->x_glist, lab);

    if(glist_isvisible(x->x_glist))
    {
        gui_vmess("gui_iemgui_label_set", "xxs",
            glist_getcanvas(x->x_glist),
            x,
            s != s_empty ? x->x_lab->s_name : "");
        iemgui_shouldvis(x, IEM_GUI_DRAW_MODE_CONFIG);
    }
}

void iemgui_label_pos(t_iemgui *x, t_symbol *s, int ac, t_atom *av)
{
    x->x_ldx = atom_getintarg(0, ac, av);
    x->x_ldy = atom_getintarg(1, ac, av);
    if(glist_isvisible(x->x_glist))
    {
        int x1 = x->x_ldx;
        int y1 = x->x_ldy;
        //iemgui_getrect_legacy_label(x, &x1, &y1);

        gui_vmess("gui_iemgui_label_coords", "xxii",
            glist_getcanvas(x->x_glist),
            x,
            x1,
            y1);
        iemgui_shouldvis(x, IEM_GUI_DRAW_MODE_CONFIG);
    }
}

void iemgui_label_font(t_iemgui *x, t_symbol *s, int ac, t_atom *av)
{
    int f = atom_getintarg(0, ac, av);
    if (f<0 || f>2) f=0;
    x->x_font_style = f;
    x->x_fontsize = maxi(atom_getintarg(1, ac, av),4);
    if(glist_isvisible(x->x_glist))
    {
        gui_vmess("gui_iemgui_label_font", "xxssi",
            glist_getcanvas(x->x_glist),
            x,
            iemgui_typeface(x),
            sys_fontweight,
            x->x_fontsize);
        iemgui_shouldvis(x, IEM_GUI_DRAW_MODE_CONFIG);
    }
}

//Sans: 84 x 10 (14) -> 6 x 10 -> 1.0
//Helvetica: 70 x 10 (14) -> 5 x 10 -> 0.83333
//Times: 61 x 10 (14) -> 4.357 x 10 -> 0.72619; 0.735 appears to work better

// We use this global var to check when getrect should report label:
// It should report it when drawing inside gop to see if we truly fit.
// Otherwise we should not report it while inside gop to avoid label being
// misinterpreted as part of the "hot" area of a widget (e.g. toggle)
extern int gop_redraw;

void iemgui_label_getrect(t_iemgui x_gui, t_glist *x,
    int *xp1, int *yp1, int *xp2, int *yp2)
{
    //fprintf(stderr,"gop_redraw = %d\n", gop_redraw);
    if (!gop_redraw)
    {
        //fprintf(stderr,"ignoring label\n");
        return;
    }

    t_float width_multiplier;
    int label_length;
    int label_x1;
    int label_y1;
    int label_x2;
    int label_y2;
    int actual_fontsize; //seems tk does its own thing when rendering
    int actual_height;

    if (x->gl_isgraph && !glist_istoplevel(x))
    {
        if (x_gui.x_lab!=s_empty)
        {
            switch(x_gui.x_font_style)
            {
                case 1:  width_multiplier = 0.83333; break;
                case 2:  width_multiplier = 0.735;   break;
                default: width_multiplier = 1.0;     break;
            }
            actual_fontsize = x_gui.x_fontsize;
            actual_height = actual_fontsize;
            //exceptions
            if (x_gui.x_font_style == 0 &&
                (actual_fontsize == 8 || actual_fontsize == 13 ||
                actual_fontsize % 10 == 1 || actual_fontsize % 10 == 6 ||
                    (actual_fontsize > 48 && actual_fontsize < 100 &&
                    (actual_fontsize %10 == 4 || actual_fontsize %10 == 9))))
            {
                actual_fontsize += 1;
            }
            else if (x_gui.x_font_style == 1 && actual_fontsize >= 5 &&
                actual_fontsize < 13 && actual_fontsize % 2 == 1)
                actual_fontsize += 1;
            else if (x_gui.x_font_style == 2 && actual_fontsize >= 5 &&
                actual_fontsize % 2 == 1)
                actual_fontsize += 1;
            if (actual_height == 9)
                actual_height += 1;
            //done with exceptions

            width_multiplier = width_multiplier * (actual_fontsize * 0.6);

            label_length = strlen(x_gui.x_lab->s_name);
            label_x1 = *xp1 + x_gui.x_ldx;
            label_y1 = *yp1 + x_gui.x_ldy - actual_height/2;
            label_x2 = label_x1 + (label_length * width_multiplier);
            label_y2 = label_y1 + actual_height*1.1;

            //DEBUG
            // Note: we may want to port this debug code to the
            // new interface, but we haven't had a need to do it yet
            //fprintf(stderr,"%f %d %d\n", width_multiplier,
            //    label_length, x_gui.x_font_style);
            //sys_vgui(".x%lx.c delete iemguiDEBUG\n", x);
            //sys_vgui(".x%lx.c create rectangle %d %d %d %d "
            //    "-tags iemguiDEBUG\n",
            //    x, label_x1, label_y1, label_x2, label_y2);
            if (label_x1 < *xp1) *xp1 = label_x1;
            if (label_x2 > *xp2) *xp2 = label_x2;
            if (label_y1 < *yp1) *yp1 = label_y1;
            if (label_y2 > *yp2) *yp2 = label_y2;
            //DEBUG
            //sys_vgui(".x%lx.c delete iemguiDEBUG\n", x);
            //sys_vgui(".x%lx.c create rectangle %d %d %d %d "
            //    "-tags iemguiDEBUG\n", x, *xp1, *yp1, *xp2, *yp2);
        }
    }
}

#if 0 // future way of reordering stuff for iemgui_shouldvis
/*
    // some day when the object tagging is
    // properly done for all GUI objects
    glist_noselect(canvas);
    glist_select(canvas, y);
    t_gobj *yy = canvas->gl_list;
    if (yy != y)
    {
        while (yy && yy->g_next != y)
            yy = yy->g_next;
        // now we have yy which is right before our y graph
        t_rtext *yr = NULL;
        if (yy)
        {
            yr = glist_findrtext(canvas, (t_text *)yy);
        }
        if (yr)
        {
            fprintf(stderr,"lower\n");
            sys_vgui(".x%lx.c lower selected %s\n", canvas, rtext_gettag(yr));
            sys_vgui(".x%lx.c raise selected %s\n", canvas, rtext_gettag(yr));
            //canvas_raise_all_cords(canvas);
        }
        else
        {
            // fall back to legacy redraw for objects
            //   that are not patchable
            fprintf(stderr,"lower fallback redraw\n");
            canvas_redraw(canvas);
        }
    }
    else
    {
        // we get here if we are supposed to go
        //   all the way to the bottom
        fprintf(stderr,"lower to the bottom\n");
        sys_vgui(".x%lx.c lower selected\n", canvas);
    }
    glist_noselect(canvas);
*/
#endif

void iemgui_shouldvis(t_iemgui *x, int mode)
{
    gop_redraw = 1;
    if(gobj_shouldvis((t_gobj *)x, x->x_glist))
    {
        if (!x->x_vis)
        {
            //fprintf(stderr,"draw new %d\n", mode);
            iemgui_draw_new(x);
            canvas_fixlinesfor(glist_getcanvas(x->x_glist), (t_text*)x);
            x->x_vis = 1;
            if (x->x_glist != glist_getcanvas(x->x_glist))
            {
                /* if we are inside gop and just have had our object's
                   properties changed we'll adjust our layer position
                   to ensure that ordering is honored */
                t_canvas *canvas = glist_getcanvas(x->x_glist);
                t_gobj *y = (t_gobj *)x->x_glist;
                // this crashes when the label goes invisible and then
                // needs to be made visible again, so for the time being
                // we use the brute force redraw below for both the
                // vis/unvis-ing of the object and its reordering
                //gobj_vis(y, canvas, 0);
                //gobj_vis(y, canvas, 1);
                // reorder it visually
                glist_redraw(canvas);

            }
        }
        //fprintf(stderr,"draw move x->x_w=%d\n", x->x_w);
        if      (mode==IEM_GUI_DRAW_MODE_NEW)    iemgui_draw_new(   x);
        else if (mode==IEM_GUI_DRAW_MODE_MOVE)   iemgui_draw_move(  x);
        else if (mode==IEM_GUI_DRAW_MODE_CONFIG) iemgui_draw_config(x);
        else bug("iemgui_shouldvis");
        scalehandle_check_and_redraw(x);
        canvas_fixlinesfor(glist_getcanvas(x->x_glist), (t_text*)x);
    }
    else if (x->x_vis)
    {
        //fprintf(stderr,"draw erase %d\n", mode);
        iemgui_draw_erase(x);
        x->x_vis = 0;
    }
    gop_redraw = 0;
}

void iemgui_size(t_iemgui *x)
{
    if(glist_isvisible(x->x_glist))
        iemgui_shouldvis(x, IEM_GUI_DRAW_MODE_MOVE);
}

void iemgui_delta(t_iemgui *x, t_symbol *s, int ac, t_atom *av)
{
    x->x_obj.te_xpix += atom_getintarg(0, ac, av);
    x->x_obj.te_ypix += atom_getintarg(1, ac, av);
    if(glist_isvisible(x->x_glist))
        iemgui_shouldvis(x, IEM_GUI_DRAW_MODE_MOVE);
}

void iemgui_pos(t_iemgui *x, t_symbol *s, int ac, t_atom *av)
{
    x->x_obj.te_xpix = atom_getintarg(0, ac, av);
    x->x_obj.te_ypix = atom_getintarg(1, ac, av);
    if(glist_isvisible(x->x_glist))
        iemgui_shouldvis(x, IEM_GUI_DRAW_MODE_MOVE);
}

void iemgui_color(t_iemgui *x, t_symbol *s, int ac, t_atom *av)
{
    x->x_bcol = iemgui_compatible_col(atom_getintarg(0, ac, av));
    if(ac > 2)
    {
        x->x_fcol = iemgui_compatible_col(atom_getintarg(1, ac, av));
        x->x_lcol = iemgui_compatible_col(atom_getintarg(2, ac, av));
    }
    else
        x->x_lcol = iemgui_compatible_col(atom_getintarg(1, ac, av));
    if(glist_isvisible(x->x_glist))
    {
        x->x_draw(x, x->x_glist, IEM_GUI_DRAW_MODE_CONFIG);
        iemgui_label_draw_config(x);
    }
}

void iemgui_displace(t_gobj *z, t_glist *glist, int dx, int dy)
{
    t_iemgui *x = (t_iemgui *)z;
    x->x_obj.te_xpix += dx;
    x->x_obj.te_ypix += dy;
    if (glist_isvisible(glist))
        iemgui_shouldvis(x, IEM_GUI_DRAW_MODE_MOVE);
}

void iemgui_displace_withtag(t_gobj *z, t_glist *glist, int dx, int dy)
{
    t_iemgui *x = (t_iemgui *)z;
    x->x_obj.te_xpix += dx;
    x->x_obj.te_ypix += dy;
    //iemgui_draw_move(x);
    canvas_fixlinesfor(glist_getcanvas(glist), (t_text *)z);
}


void iemgui_select(t_gobj *z, t_glist *glist, int selected)
{
    t_iemgui *x = (t_iemgui *)z;
    t_canvas *canvas=glist_getcanvas(glist);
    if (selected)
        x->x_selected = canvas;
    else
        x->x_selected = NULL;
    x->x_draw((void *)z, glist, IEM_GUI_DRAW_MODE_SELECT);
    if (selected < 2)
    {
        scalehandle_draw(x);
    }
    else
    {
        // exception where we get rid of handles when moving tiny objects
        // because tkpath's slowness sometimes makes mouse pointer go over
        // a handle and messes things up. we only do this when using
        // startmotion (see g_editor.c).
        // LATER: get rid of this because we will deal with this better using
        // the new toolkit.
        scalehandle_draw_erase2(x);
    }
    iemgui_label_draw_select(x);
    iemgui_tag_selected(x);
}

void iemgui_delete(t_gobj *z, t_glist *glist)
{
    canvas_deletelinesfor(glist, (t_text *)z);
}

void iemgui_vis(t_gobj *z, t_glist *glist, int vis)
{
    t_iemgui *x = (t_iemgui *)z;
    if (gobj_shouldvis(z, glist))
    {
        if (vis)
            iemgui_draw_new(x);
        else
        {
            iemgui_draw_erase(x);
            sys_unqueuegui(z);
        }
        x->x_vis = vis;
    }
}

void iemgui_save(t_iemgui *x, t_symbol **srl, int *bflcol)
{
    if (srl) {
       srl[0] = x->x_snd;
       srl[1] = x->x_rcv;
       srl[2] = x->x_lab;
    }
    iemgui_all_sym2dollararg(x, srl);
    iemgui_all_col2save(x, bflcol);
}

void iemgui_properties(t_iemgui *x, t_symbol **srl)
{
    srl[0] = x->x_snd;
    srl[1] = x->x_rcv;
    srl[2] = x->x_lab;
    iemgui_all_sym2dollararg(x, srl);
    srl[0] = iemgui_dollar2raute(srl[0]);
    srl[1] = iemgui_dollar2raute(srl[1]);
    srl[2] = iemgui_dollar2raute(srl[2]);
}

int iemgui_dialog(t_iemgui *x, int argc, t_atom *argv)
{
    t_symbol *srl[3];
    x->x_loadinit = !!atom_getintarg(5, argc, argv);
    srl[0] = iemgui_getfloatsymarg(7,argc,argv);
    srl[1] = iemgui_getfloatsymarg(8,argc,argv);
    srl[2] = iemgui_getfloatsymarg(9,argc,argv);
    x->x_ldx = atom_getintarg(10, argc, argv);
    x->x_ldy = atom_getintarg(11, argc, argv);
    int f = atom_getintarg(12, argc, argv);
    x->x_fontsize = maxi(atom_getintarg(13, argc, argv),4);
    x->x_bcol = atom_getintarg(14, argc, argv) & 0xffffff;
    x->x_fcol = atom_getintarg(15, argc, argv) & 0xffffff;
    x->x_lcol = atom_getintarg(16, argc, argv) & 0xffffff;
    int oldsndrcvable=0;
    if(iemgui_has_rcv(x)) oldsndrcvable |= IEM_GUI_OLD_RCV_FLAG;
    if(iemgui_has_snd(x)) oldsndrcvable |= IEM_GUI_OLD_SND_FLAG;
    iemgui_all_raute2dollar(srl);

    // replace ascii code 11 (\v or vertical tab) with spaces
    // we do this so that the string with spaces can survive argc,argv
    // conversion when coming from dialog side of things where it is parsed
    char *c;
    for(c = srl[2]->s_name; c != NULL && *c != '\0'; c++)
    {
        if(*c == '\v')
        {
            *c = ' ';
        }
    }

    x->x_snd_unexpanded=srl[0]; srl[0]=canvas_realizedollar(x->x_glist, srl[0]);
    x->x_rcv_unexpanded=srl[1]; srl[1]=canvas_realizedollar(x->x_glist, srl[1]);
    x->x_lab_unexpanded=srl[2]; srl[2]=canvas_realizedollar(x->x_glist, srl[2]);
    if(srl[1]!=x->x_rcv)
    {
        if(iemgui_has_rcv(x))
            pd_unbind((t_pd *)x, x->x_rcv);
        x->x_rcv = srl[1];
        pd_bind((t_pd *)x, x->x_rcv);
    }
    x->x_snd = srl[0];
    x->x_lab = srl[2];
    if(f<0 || f>2) f=0;
    x->x_font_style = f;
    iemgui_verify_snd_ne_rcv(x);
    canvas_dirty(x->x_glist, 1);
    return oldsndrcvable;
}

void iem_inttosymargs(t_iemgui *x, int n)
{
    x->x_loadinit = (n >>  0);
    x->x_locked = 0;
    x->x_reverse = 0;
}

int iem_symargstoint(t_iemgui *x)
{
    return ((x->x_loadinit & 1) <<  0);
}

void iem_inttofstyle(t_iemgui *x, int n)
{
    x->x_font_style = (n >> 0);
    x->x_selected = NULL;
    x->x_finemoved = 0;
    x->x_put_in2out = 0;
    x->x_change = 0;
}

int iem_fstyletoint(t_iemgui *x)
{
    return ((x->x_font_style << 0) & 63);
}

char *iem_get_tag(t_canvas *glist, t_iemgui *iem_obj)
{
    t_gobj *y = (t_gobj *)iem_obj;
    t_object *ob = pd_checkobject(&y->g_pd);

    /* GOP objects are unable to call findrtext
       triggering consistency check error */
    t_rtext *yyyy = NULL;
    if (!glist->gl_isgraph || glist_istoplevel(glist))
        yyyy = glist_findrtext(glist_getcanvas(glist), (t_text *)&ob->ob_g);

    /* on GOP we cause segfault as text_gettag() returns bogus data */
    if (yyyy) return(rtext_gettag(yyyy));
    else return("bogus");
}

//----------------------------------------------------------------
// SCALEHANDLE COMMON CODE (by Mathieu, refactored from existing code)

extern int gfxstub_haveproperties(void *key);

int   mini(int   a, int   b) {return a<b?a:b;}
int   maxi(int   a, int   b) {return a>b?a:b;}
float minf(float a, float b) {return a<b?a:b;}
float maxf(float a, float b) {return a>b?a:b;}

extern t_class *my_canvas_class;

// in 18 cases only, because canvas does not fit the pattern below.
// canvas has no label handle and has a motion handle
// but in the case of canvas, the "iemgui" tag is added (it wasn't the case originally)
void scalehandle_draw_select(t_scalehandle *h, int px, int py) {
    char tagbuf[MAXPDSTRING];
    t_object *x = h->h_master;
    t_canvas *canvas=glist_getcanvas(h->h_glist);

    int sx = h->h_scale ? SCALEHANDLE_WIDTH  : LABELHANDLE_WIDTH;
    int sy = h->h_scale ? SCALEHANDLE_HEIGHT : LABELHANDLE_HEIGHT;

    scalehandle_draw_erase(h);

    if (!h->h_vis) {
        sprintf(tagbuf, "x%lx", (long unsigned int)x);
        gui_vmess("gui_iemgui_label_show_drag_handle", "xsiiii",
            canvas, tagbuf, 1, px - sx, py - sy, h->h_scale);
        h->h_vis = 1;
    }
}

void scalehandle_draw_select2(t_iemgui *x) {
    t_canvas *canvas=glist_getcanvas(x->x_glist);
    t_class *c = pd_class((t_pd *)x);
    int sx,sy;
    if (c == my_canvas_class)
    {
        t_my_canvas *y = (t_my_canvas *)x;
        sx = y->x_vis_w;
        sy = y->x_vis_h;
    }
    else
    {
        int x1,y1,x2,y2;
        c->c_wb->w_getrectfn((t_gobj *)x,canvas,&x1,&y1,&x2,&y2);
        //iemgui_getrect_draw(x, &x1, &y1, &x2, &y2);
        sx=x2-x1; sy=y2-y1;
    }
    /* we're not drawing the scalehandle for the actual iemgui-- just
       the one for the label. */
    if (c == my_canvas_class)
        scalehandle_draw_select(x->x_handle,sx+8,sy+3);
    if (x->x_lab != s_empty)
        scalehandle_draw_select(x->x_lhandle,x->x_ldx,x->x_ldy);
}

void scalehandle_draw_erase(t_scalehandle *h) {
    t_canvas *canvas = glist_getcanvas(h->h_glist);
    if (!h->h_vis) return;
    gui_vmess("gui_iemgui_label_show_drag_handle", "xxiiii",
        h->h_glist, h->h_master, 0, 0, 0, h->h_scale);
    h->h_vis = 0;
}

void scalehandle_draw_erase2(t_iemgui *x) {
    t_scalehandle *sh = (t_scalehandle *)(x->x_handle);
    t_scalehandle *lh = (t_scalehandle *)(x->x_lhandle);
    if (sh->h_vis) scalehandle_draw_erase(sh);
    if (lh->h_vis) scalehandle_draw_erase(lh);
}

void scalehandle_draw(t_iemgui *x) {
    if (x->x_glist == glist_getcanvas(x->x_glist)) {
        if (x->x_selected == x->x_glist) scalehandle_draw_select2(x);
        else scalehandle_draw_erase2(x);
    }
}

t_scalehandle *scalehandle_new(t_object *x, t_glist *glist, int scale, t_clickhandlefn chf, t_motionhandlefn mhf) {
    t_scalehandle *h = (t_scalehandle *)pd_new(scalehandle_class);
    char buf[19]; // 3 + max size of %lx
    h->h_master = x;
    h->h_glist = glist;
    if (!scale) /* Only bind for labels-- scaling uses pd_vmess in g_editor.c */
    {
        sprintf(buf, "_l%lx", (long unsigned int)x);
        pd_bind((t_pd *)h, h->h_bindsym = gensym(buf));
    }
    else if (scale && pd_class((t_pd *)x) == my_canvas_class)
    {
        sprintf(buf, "_s%lx", (long unsigned int)x);
        pd_bind((t_pd *)h, h->h_bindsym = gensym(buf));
    }
    sprintf(h->h_outlinetag, "h%lx", (t_int)h);
    h->h_dragon = 0;
    h->h_scale = scale;
    h->h_offset_x = 0;
    h->h_offset_y = 0;
    h->h_vis = 0;
    sprintf(h->h_pathname, ".x%lx.h%lx", (t_int)h->h_glist, (t_int)h);
    h->h_clickfn = chf;
    h->h_motionfn = mhf;
    return h;
}

void scalehandle_free(t_scalehandle *h) {
    if (!h->h_scale || pd_class((t_pd *)(h->h_master)) == my_canvas_class)
    { /* only binding label handles and my_canvas resize handle */
        pd_unbind((t_pd *)h, h->h_bindsym);
    }
    pd_free((t_pd *)h);
}

void properties_set_field_int(long props, const char *gui_field, int value) {
    char tagbuf[MAXPDSTRING];
    sprintf(tagbuf, ".gfxstub%lx", props);
    gui_vmess("gui_dialog_set_field", "ssi",
        tagbuf,
        gui_field,
        value);
};

void scalehandle_dragon_label(t_scalehandle *h, float mouse_x, float mouse_y) {
    if (h->h_dragon && !h->h_scale)
    {
        t_iemgui *x = (t_iemgui *)(h->h_master);
        int dx = (int)mouse_x - (int)h->h_offset_x,
            dy = (int)mouse_y - (int)h->h_offset_y;
        h->h_dragx = dx;
        h->h_dragy = dy;

        int properties = gfxstub_haveproperties((void *)x);
        if (properties)
        {
            int new_x = x->x_ldx + h->h_dragx;
            int new_y = x->x_ldy + h->h_dragy;
            properties_set_field_int(properties, "x_offset", new_x);
            properties_set_field_int(properties, "y_offset", new_y);
        }
        x->x_ldx += dx;
        x->x_ldy += dy;

        if (glist_isvisible(x->x_glist))
        {
            int xpos=text_xpix(&x->x_obj, x->x_glist);
            int ypos=text_ypix(&x->x_obj, x->x_glist);
            //iemgui_getrect_legacy_label(x, &xpos, &ypos);
            t_canvas *canvas=glist_getcanvas(x->x_glist);
            gui_vmess("gui_iemgui_label_coords", "xxii",
                canvas,
                x,
                x->x_ldx,
                x->x_ldy);
        }
    }
}

void scalehandle_click_label(t_scalehandle *h) {
    t_iemgui *x = (t_iemgui *)h->h_master;
    if (glist_isvisible(x->x_glist))
    {
        sys_vgui("lower %s\n", h->h_pathname);
        t_scalehandle *othersh = x->x_handle;
        sys_vgui("lower .x%lx.h%lx\n",
            (t_int)glist_getcanvas(x->x_glist), (t_int)othersh);
    }
    h->h_dragx = 0;
    h->h_dragy = 0;
}

void scalehandle_getrect_master(t_scalehandle *h, int *x1, int *y1, int *x2, int *y2) {
    t_iemgui *x = (t_iemgui *)h->h_master;
    t_class *c = pd_class((t_pd *)x);
    c->c_wb->w_getrectfn((t_gobj *)x,x->x_glist,x1,y1,x2,y2);
    //fprintf(stderr,"%d %d %d %d\n",*x1,*y1,*x2,*y2);
    //iemgui_getrect_draw((t_iemgui *)x, x1, y1, x2, y2);
    //fprintf(stderr,"%d %d %d %d\n",*x1,*y1,*x2,*y2);
    //printf("%s\n",c->c_name->s_name);
    if (c==my_canvas_class) {
        t_my_canvas *xx = (t_my_canvas *)x;
        *x2=*x1+xx->x_vis_w;
        *y2=*y1+xx->x_vis_h;
    }
}

void scalehandle_click_scale(t_scalehandle *h) {
    int x1,y1,x2,y2;
    t_iemgui *x = (t_iemgui *)h->h_master;
    scalehandle_getrect_master(h,&x1,&y1,&x2,&y2);
    if (glist_isvisible(x->x_glist))
    {
        //sys_vgui("lower %s\n", h->h_pathname);
        //sys_vgui(".x%x.c create prect %d %d %d %d -stroke $pd_colors(selection) -strokewidth 1 -tags %s\n",
        //    x->x_glist, x1, y1, x2, y2, h->h_outlinetag);
    }
    h->h_dragx = 0;
    h->h_dragy = 0;
}

// here we don't need to use glist_getcanvas(t_canvas *)
// because scalehandle on iemgui objects appears only when
// they are on their own canvas
void scalehandle_unclick_scale(t_scalehandle *h) {
    t_iemgui *x = (t_iemgui *)h->h_master;
    //sys_vgui(".x%x.c delete %s\n", x->x_glist, h->h_outlinetag);
    iemgui_io_draw_move(x);
    iemgui_select((t_gobj *)x, x->x_glist, 1);
    canvas_fixlinesfor(x->x_glist, (t_text *)x);
    canvas_getscroll(x->x_glist);
}

void scalehandle_drag_scale(t_scalehandle *h) {
    int x1,y1,x2,y2;
    t_iemgui *x = (t_iemgui *)h->h_master;
    scalehandle_getrect_master(h,&x1,&y1,&x2,&y2);
    if (glist_isvisible(x->x_glist))
    {
        //sys_vgui(".x%x.c coords %s %d %d %d %d\n", x->x_glist, h->h_outlinetag,
        //    x1, y1, x2+h->h_dragx, y2+h->h_dragy);
    }
}

static void scalehandle_clickhook(t_scalehandle *h, t_floatarg f,
    t_floatarg xxx, t_floatarg yyy)
{
    h->h_offset_x=xxx;
    h->h_offset_y=yyy;
    h->h_clickfn(h,f);
}

static void scalehandle_motionhook(t_scalehandle *h,
    t_floatarg f1, t_floatarg f2)
{
    h->h_motionfn(h,f1,f2);
    // Now set the offset to the new mouse position
    h->h_offset_x = f1;
    h->h_offset_y = f2;
}

void iemgui__clickhook3(t_scalehandle *sh, int newstate) {
    if (!sh->h_dragon && newstate && sh->h_scale)
        scalehandle_click_scale(sh);
    else if (!sh->h_dragon && newstate && !sh->h_scale)
        scalehandle_click_label(sh);
    sh->h_dragon = newstate;
}

// function for updating of handles on iemgui objects
// we don't need glist_getcanvas() because handles are only
// drawn when object is selected on its canvas (instead of GOP)
static void scalehandle_check_and_redraw(t_iemgui *x)
{
    if (x->x_selected == x->x_glist)
        scalehandle_draw_select2(x);
}

//----------------------------------------------------------------
// IEMGUI refactor (by Mathieu)

void iemgui_tag_selected(t_iemgui *x) {
    t_canvas *canvas=glist_getcanvas(x->x_glist);
    if (x->x_selected)
        gui_vmess("gui_gobj_select", "xx", canvas, x);
    else
        gui_vmess("gui_gobj_deselect", "xx", canvas, x);
}

void iemgui_label_draw_new(t_iemgui *x) {
    char col[8];
    t_canvas *canvas=glist_getcanvas(x->x_glist);
    int x1=text_xpix(&x->x_obj, x->x_glist)+x->legacy_x;
    int y1=text_ypix(&x->x_obj, x->x_glist)+x->legacy_y;
    iemgui_getrect_legacy_label(x, &x1, &y1);
    sprintf(col, "#%6.6x", x->x_lcol);
    gui_vmess("gui_iemgui_label_new", "xxiissssi",
        canvas,
        x,
        x->x_ldx,
        x->x_ldy,
        col,
        x->x_lab != s_empty ? x->x_lab->s_name : "",
        iemgui_typeface(x),
        sys_fontweight,
        x->x_fontsize);
}

void iemgui_label_draw_move(t_iemgui *x) {
    t_canvas *canvas=glist_getcanvas(x->x_glist);
    int x1=text_xpix(&x->x_obj, x->x_glist)+x->legacy_x;
    int y1=text_ypix(&x->x_obj, x->x_glist)+x->legacy_y;
    //iemgui_getrect_legacy_label(x, &x1, &y1);
    //sys_vgui(".x%lx.c coords %lxLABEL %d %d\n",
    //    canvas, x, x1+x->x_ldx, y1+x->x_ldy);

    /* Note-- since we're not using x1/y1 above in the new GUI call,
       Ivica's legacy logic isn't affecting us. Quick fix below by
       just adding the legacy offsets... */
    gui_vmess("gui_iemgui_label_coords", "xxii",
        glist_getcanvas(x->x_glist),
        x,
        x->x_ldx + x->legacy_x,
        x->x_ldy + x->legacy_y);
}

void iemgui_label_draw_config(t_iemgui *x) {
    char col[8];
    t_canvas *canvas=glist_getcanvas(x->x_glist);
    if (x->x_selected == canvas && x->x_glist == canvas)
    {
        gui_vmess("gui_iemgui_label_font", "xxssi",
            glist_getcanvas(x->x_glist),
            x,
            iemgui_typeface(x),
            sys_fontweight,
            x->x_fontsize);