src/mathed/math_panel.C

   1 /*
   2  *  File:        math_panel.C
   3  *  Purpose:     Mathed GUI for lyx
   4  *  Author:      Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
   5  *  Created:     March 28, 1996
   6  *
   7  *  Dependencies: Xlib, Xpm, XForms, Lyx
   8  *
   9  *  Copyright: 1996, Alejandro Aguilar Sierra
  10  *
  11  *   You are free to use and modify it under the terms of
  12  *   the GNU General Public Licence version 2 or later.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "Lsstream.h"
  18
  19 #include FORMS_H_LOCATION
  20
  21 #include "lyx_gui_misc.h"
  22 #include "math_panel.h"
  23 #include "symbol_def.h"
  24 #include "formula.h"
  25 #include "lyxfunc.h"
  26 #include "gettext.h"
  27
  28 /* Bitmaps */
  29 #include "delim.xbm"
  30 #include "delim0.xpm"
  31 #include "delim.xpm"
  32 #include "deco.xbm"
  33 #include "deco.xpm"
  34 #include "space.xpm"
  35 #include "sqrt.xpm"
  36 #include "frac.xpm"
  37 #include "matrix.xpm"
  38 #include "equation.xpm"
  39
  40 #if 0
  41 using std::free;
  42 #endif
  43
  44 static LyXFunc * lyxfunc = 0;
  45
  46 //static FD_panel* symb_form= 0;
  47
  48 FD_panel  * fd_panel;
  49 FD_delim  * fd_delim;
  50 FD_deco   * fd_deco;
  51 FD_space  * fd_space;
  52 FD_matrix * fd_matrix;
  53
  54 int delim_code[] = {
  55    '(', ')', LM_lceil,  LM_rceil,  LM_uparrow,  LM_Uparrow,
  56    '[', ']', LM_lfloor,  LM_rfloor,  LM_updownarrow, LM_Updownarrow,
  57    '{', '}',  '/', LM_backslash,  LM_downarrow,  LM_Downarrow,
  58    LM_langle,  LM_rangle, '|', LM_Vert, '.', 0
  59 };
  60
  61 // indexes to get the left and right versions of each delimiter
  62 // Contributed by Pablo De Napoli (pdenapo@dm.uba.ar)
  63 int delim_lversion[] = { 0,0,2,2,4,5,
  64                          6,6,8,8,10,11,
  65                          12,12,14,15,16,17,
  66                          18,18,20,21,22,23 };
  67
  68 int delim_rversion[] = { 1,1,3,3,4,5,
  69                         7,7,9,9,10,11,
  70                         13,13,14,15,16,17,
  71                         19,19,20,21,22,23 };
  72
  73
  74 static char const * deco_code[] = {
  75    "widehat", "widetilde", "overbrace", "overleftarrow", "overrightarrow",
  76    "overline", "underbrace", "underline"
  77 };
  78
  79
  80 static char const * func_code[] = {
  81     "arccos", "arcsin", "arctan", "arg", "bmod",
  82     "cos", "cosh", "cot", "coth", "csc", "deg",
  83     "det", "dim", "exp", "gcd", "hom", "inf", "ker",
  84     "lg", "lim", "liminf", "limsup", "ln", "log",
  85     "max", "min", "sec", "sin", "sinh", "sup",
  86     "tan", "tanh"
  87 };
  88
  89 static char h_align_str[80] = "c";
  90
  91 /* callbacks for form panel */
  92 void button_cb(FL_OBJECT * ob, long data)
  93 {
  94    extern void free_symbols_form();
  95    switch (data)  {
  96     case MM_GREEK:
  97     case MM_VARSIZE:
  98     case MM_BRELATS:
  99     case MM_ARROW:
 100     case MM_BOP:
 101     case MM_MISC:
 102       {
 103          BitmapMenu * menu = static_cast<BitmapMenu *>(ob->u_vdata);
 104          menu->Show();
 105          break;
 106       }
 107     case MM_FRAC:
 108        lyxfunc->Dispatch(LFUN_INSERT_MATH, "frac");
 109       break;
 110     case MM_SQRT:
 111        lyxfunc->Dispatch(LFUN_INSERT_MATH, "sqrt");
 112       break;
 113     case MM_DELIM:
 114       fl_show_form(fd_delim->delim,
 115                    FL_PLACE_MOUSE | FL_FREE_SIZE, FL_TRANSIENT,
 116                    _("Delimiter"));
 117        fl_set_form_atclose(fd_delim->delim, CancelCloseBoxCB, 0);
 118       break;
 119     case MM_DECO:
 120       fl_show_form(fd_deco->deco,
 121                    FL_PLACE_MOUSE | FL_FREE_SIZE, FL_TRANSIENT,
 122                    _("Decoration"));
 123        fl_set_form_atclose(fd_deco->deco, CancelCloseBoxCB, 0);
 124       break;
 125     case MM_SPACE:
 126       fl_show_form(fd_space->space,
 127                    FL_PLACE_MOUSE | FL_FREE_SIZE, FL_TRANSIENT,
 128                    _("Spacing"));
 129        fl_set_form_atclose(fd_space->space, CancelCloseBoxCB, 0);
 130       break;
 131     case MM_MATRIX:
 132       fl_show_form(fd_matrix->matrix,
 133                    FL_PLACE_MOUSE | FL_FREE_SIZE, FL_TRANSIENT,
 134                    _("Matrix"));
 135        fl_set_form_atclose(fd_matrix->matrix, CancelCloseBoxCB, 0);
 136       break;
 137     case MM_EQU:
 138        lyxfunc->Dispatch(LFUN_MATH_DISPLAY);
 139       break;
 140     case MM_FUNC:
 141       {
 142           int i = fl_get_browser(fd_panel->func_browse) - 1;
 143           lyxfunc->Dispatch(LFUN_INSERT_MATH, func_code[i]);
 144           break;
 145       }
 146     case 100:
 147       free_symbols_form();
 148       break;
 149    }
 150 }
 151
 152
 153 /* callbacks for form delim */
 154 void delim_cb(FL_OBJECT *, long data)
 155 {
 156    int left = fd_delim->left->u_ldata, right= fd_delim->right->u_ldata;
 157    int side = (fl_get_button(fd_delim->right)!= 0);
 158
 159    switch (data) {
 160     case MM_APPLY:
 161     case MM_OK:
 162       {
 163               std::ostringstream ost;
 164               ost << delim_code[left] << ' ' << delim_code[right];
 165               lyxfunc->Dispatch(LFUN_MATH_DELIM, ost.str().c_str());
 166               if (data == MM_APPLY) break;
 167       }
 168     case MM_CLOSE: fl_hide_form(fd_delim->delim); break;
 169     case 2:
 170       {
 171           int i = fl_get_bmtable(fd_delim->menu);
 172           int button = fl_get_bmtable_numb(fd_delim->menu);
 173           bool both = (button==FL_MIDDLE_MOUSE);
 174
 175           if (i>= 0) {
 176
 177               if (side || (button== FL_RIGHT_MOUSE)) {
 178                   right = i;
 179               } else {
 180                   left = i;
 181                   if (both)
 182                     right = delim_rversion[i];
 183               }
 184           }
 185           Pixmap p1, p2;
 186           p1 = fl_get_pixmap_pixmap(fd_delim->pix, &p1, &p2);
 187           fl_draw_bmtable_item(fd_delim->menu, left, p1, 0, 0);
 188           fl_draw_bmtable_item(fd_delim->menu, right, p1, 16, 0);
 189           fl_redraw_object(fd_delim->pix);
 190
 191           fd_delim->left->u_ldata = left;
 192           fd_delim->right->u_ldata = right;
 193
 194           break;
 195       }
 196     case 3: break;
 197     case 4: break;
 198    }
 199 }
 200
 201 /* callbacks for form matrix */
 202 void matrix_cb(FL_OBJECT *, long data)
 203 {
 204    static char v_align_c[] = "tcb";
 205
 206    switch (data) {
 207     case MM_APPLY:
 208     case MM_OK:
 209       {
 210          char c = v_align_c[fl_get_choice(fd_matrix->valign) - 1];
 211          char const * sh = fl_get_input(fd_matrix->halign);
 212          int nx = int(fl_get_slider_value(fd_matrix->columns) + 0.5);
 213          int ny = int(fl_get_slider_value(fd_matrix->rows) + 0.5);
 214          if (data == MM_OK) fl_hide_form(fd_matrix->matrix);
 215          std::ostringstream ost;
 216          ost << nx << ' ' << ny << ' ' << c << sh;
 217          lyxfunc->Dispatch(LFUN_INSERT_MATRIX, ost.str().c_str());
 218          break;
 219       }
 220     case MM_CLOSE: fl_hide_form(fd_matrix->matrix); break;
 221     case 2:
 222       {
 223          int nx = int(fl_get_slider_value(fd_matrix->columns)+0.5);
 224          for (int i = 0; i < nx; ++i) h_align_str[i] = 'c';
 225          //memset(h_align_str, 'c', nx);
 226          h_align_str[nx] = '\0';
 227 //       fl_freeze_form(fd_form_main->form_main);
 228 //      fl_addto_form(fd_form_main->form_main);
 229
 230          fl_set_input(fd_matrix->halign, h_align_str);
 231          fl_redraw_object(fd_matrix->halign);
 232          break;
 233       }
 234    }
 235 }
 236
 237 /* callbacks for form deco */
 238 void deco_cb(FL_OBJECT *, long data)
 239 {
 240    switch (data) {
 241     case MM_APPLY:
 242     case MM_OK:
 243       {
 244          int const i = fl_get_bmtable(fd_deco->menu);
 245          int const l = sizeof(deco_code)/sizeof(deco_code[0]);
 246          // ideally the callback should not be called if the index is
 247          // greater than the maxitem of the bmtable, but I do not know
 248          // how to enforce that (JMarc)
 249          if (i <= l) {
 250            lyxfunc->Dispatch(LFUN_INSERT_MATH, deco_code[i]);
 251            if (data == MM_APPLY) break;
 252          }
 253          else break;
 254       }
 255     case MM_CLOSE: fl_hide_form(fd_deco->deco); break;
 256    }
 257 }
 258
 259
 260 /* callbacks for form space */
 261 void space_cb(FL_OBJECT *, long data)
 262 {
 263    static short sp = -1;
 264    extern char * latex_mathspace[];
 265
 266    if (data >= 0 && data < 6)
 267       sp = short(data);
 268    else
 269    switch (data) {
 270     case MM_APPLY:
 271     case MM_OK:
 272       {
 273           if (sp>= 0)
 274             lyxfunc->Dispatch(LFUN_INSERT_MATH, latex_mathspace[sp]);
 275          if (data == MM_APPLY) break;
 276       }
 277     case MM_CLOSE: fl_hide_form(fd_space->space); break;
 278    }
 279 }
 280
 281
 282 extern "C" int align_filter(FL_OBJECT *, char const *, char const * cur, int c)
 283 {
 284    int n = int(fl_get_slider_value(fd_matrix->columns)+0.5) - strlen(cur);
 285    return ((c == 'c'||c == 'l'||c == 'r') && n>= 0) ? FL_VALID: FL_INVALID;
 286 }
 287
 288
 289 char const ** mathed_get_pixmap_from_icon(int d)
 290 {
 291    switch (d) {
 292     case MM_FRAC: return frac;
 293     case MM_SQRT: return sqrt_xpm;
 294     case MM_DELIM: return delim;
 295     case MM_MATRIX: return matrix;
 296     case MM_EQU: return equation;
 297     case MM_DECO: return deco;
 298     case MM_SPACE: return space_xpm;
 299     default: return 0;
 300    }
 301 }
 302
 303
 304 FD_panel * create_math_panel( )
 305 {
 306    fd_panel = create_form_panel();
 307    fd_delim = create_form_delim();
 308    fd_deco = create_form_deco();
 309    fd_space = create_form_space();
 310    fd_matrix = create_form_matrix();
 311
 312    /* fill-in form initialization code */
 313    fl_set_button(fd_delim->left, 1);
 314    fl_set_pixmap_data(fd_delim->pix, const_cast<char**>(delim0));
 315    fl_set_bmtable_data(fd_delim->menu, 6, 4, delim_width, delim_height,
 316                        delim_bits);
 317    fl_set_bmtable_maxitems(fd_delim->menu, 23);
 318
 319    fl_set_pixmap_data(fd_panel->sqrt, const_cast<char**>(sqrt_xpm));
 320    fl_set_pixmap_data(fd_panel->frac, const_cast<char**>(frac));
 321    fl_set_pixmap_data(fd_panel->delim, const_cast<char**>(delim));
 322    fl_set_pixmap_data(fd_panel->deco, const_cast<char**>(deco));
 323    fl_set_pixmap_data(fd_panel->space, const_cast<char**>(space_xpm));
 324    fl_set_pixmap_data(fd_panel->matrix, const_cast<char**>(matrix));
 325    fl_set_pixmap_data(fd_panel->equation, const_cast<char**>(equation));
 326
 327    for (int i = 0; i < 32; ++i) {
 328        fl_add_browser_line(fd_panel->func_browse, func_code[i]);
 329    }
 330
 331    fl_addto_choice(fd_matrix->valign, _("Top | Center | Bottom"));
 332    fl_set_choice(fd_matrix->valign, 2);
 333    fl_set_input(fd_matrix->halign, h_align_str);
 334    fl_set_input_filter(fd_matrix->halign, align_filter);
 335
 336    fl_set_bmtable_data(fd_deco->menu, 3, 3, deco_width, deco_height,
 337                        deco_bits);
 338    fl_set_bmtable_maxitems(fd_deco->menu, 8);
 339
 340    fd_delim->left->u_ldata = 0;
 341    fd_delim->right->u_ldata = 1;
 342
 343    return fd_panel;
 344 }
 345
 346 extern BitmapMenu * sym_menu;
 347 extern void  create_symbol_menues(FD_panel *);
 348
 349
 350 void free_symbols_form()
 351 {
 352    if (fd_panel) {
 353       fl_hide_form(fd_panel->panel);
 354       fl_free_form(fd_panel->panel);
 355       delete sym_menu;
 356       free(fd_panel);
 357       fd_panel = 0;
 358    }
 359 }
 360
 361
 362 extern "C" int AtClose_symbols_form(FL_FORM *, void *)
 363 {
 364   free_symbols_form();
 365   return FL_IGNORE;
 366 }
 367
 368
 369 void show_symbols_form(LyXFunc * lf)
 370 {
 371     lyxfunc = lf;
 372     if (!fd_panel) {
 373         fd_panel = create_math_panel();
 374         fl_register_raw_callback(fd_panel->panel,
 375                                  ButtonPressMask|KeyPressMask, C_peek_event);
 376         create_symbol_menues(fd_panel);
 377         fl_set_form_atclose(fd_panel->panel, AtClose_symbols_form, 0);
 378     }
 379     if (fd_panel->panel->visible) {
 380         fl_raise_form(fd_panel->panel);
 381     } else {
 382       fl_show_form(fd_panel->panel,
 383                    FL_PLACE_MOUSE | FL_FREE_SIZE, FL_TRANSIENT,
 384                    _("Math Panel"));
 385     }
 386 }