src/bmtable.c

   1 /*
   2  *  File:        bmtable.c
   3  *  Purpose:     Implementation of the XForms object bmtable.
   4  *  Author:      Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
   5  *  Created:     November 1995
   6  *  Description: A bitmap table uses a single bitmap to simulate a 2d array
   7  *               of bitmap buttons. It can be used to build bitmap menus.
   8  *
   9  *  Copyright 1995, 1996 Alejandro Aguilar Sierra
  10  *
  11  *  You are free to use and modify this code under the terms of
  12  *  the GNU General Public Licence version 2 or later.
  13  *
  14  */
  15
  16 #include <config.h>
  17
  18 #include <stdlib.h>
  19 #include "bmtable.h"
  20 #include XPM_H_LOCATION
  21
  22 #if defined(__cplusplus)
  23 extern "C"
  24 {
  25 #endif
  26
  27 typedef struct   {
  28    int nx, ny;   /* Dimensions of the table */
  29    int dx, dy;   /* Size of each item */
  30    int bx, by;   /* Bitmap's position */
  31    int bw, bh;   /* Bitmap dimensions */
  32    unsigned char const * bdata;  /* Bitmap data */
  33    int maxi;     /* Number of items */
  34    int i;        /* Current position */
  35    int mousebut; /* mouse button pushed */
  36    Pixmap pix;   /* Pixmap from data (temporal) */
  37 } BMTABLE_SPEC;
  38
  39
  40 int handle_bitmaptable(FL_OBJECT * ob, int event, FL_Coord mx,
  41                        FL_Coord my, int key, void * xev);
  42
  43
  44 FL_OBJECT * fl_create_bmtable(int type, FL_Coord x, FL_Coord y,
  45                               FL_Coord w, FL_Coord h, char const * label)
  46 {
  47    FL_OBJECT * ob;
  48
  49    ob = fl_make_object(FL_BMTABLE, type, x, y, w, h, label, handle_bitmaptable);
  50    ob->boxtype = FL_BMTABLE_BOXTYPE;
  51    ob->spec = fl_calloc(1, sizeof(BMTABLE_SPEC));
  52    ((BMTABLE_SPEC *)ob->spec)->pix = 0;
  53    ((BMTABLE_SPEC *)ob->spec)->bdata= 0;
  54    ((BMTABLE_SPEC *)ob->spec)->mousebut= -1;
  55    return ob;
  56 }
  57
  58
  59 FL_OBJECT *fl_add_bmtable(int type, FL_Coord x, FL_Coord y,
  60                               FL_Coord w, FL_Coord h, char const *label)
  61 {
  62    FL_OBJECT *ob;
  63
  64    ob = fl_create_bmtable(type, x, y, w, h, label);
  65    fl_add_object(fl_current_form, ob);
  66
  67    return ob;
  68 }
  69
  70
  71 static void draw_bitmaptable(FL_OBJECT *ob)
  72 {
  73         int i, j, lx;
  74         FL_Coord mx, my;
  75         FL_Coord xx, yy, ww, hh;
  76         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
  77         GC gc = fl_state[fl_get_vclass()].gc[0];
  78         if (!sp) return;
  79
  80         /* draw the bounding box first */
  81         lx = sp->maxi % sp->nx;
  82         fl_drw_box(ob->boxtype, ob->x, ob->y, ob->w, ob->h, ob->col1, ob->bw);
  83         if (lx) {
  84                 i = FL_abs(ob->bw);
  85                 xx = ob->x+ sp->dx*lx + i;
  86                 yy = ob->y+ (sp->ny-1)*sp->dy+i;
  87                 ww = ob->x+ob->w - xx - i;
  88                 hh = ob->y+ob->h-yy-i;
  89                 fl_drw_frame(FL_DOWN_FRAME, xx, yy, ww, hh, ob->col1, ob->bw);
  90                 fl_rectf(xx, yy, ww+i, hh+i, ob->col1);
  91         }
  92
  93         /* draw the background bitmap */
  94         if (sp->bdata)  {
  95                 if (!sp->pix) {
  96                         sp->pix = XCreatePixmapFromBitmapData(fl_display, fl_winget(),
  97                                                               (char*)sp->bdata,
  98                                                                sp->bw, sp->bh,
  99                                         fl_get_flcolor(ob->lcol), fl_get_flcolor(ob->col1),
 100                                                                /*DefaultDepth(fl_display, DefaultScreen(fl_display))*/ fl_state[fl_get_vclass()].depth);
 101                         XFlush(fl_display);
 102                 }
 103         }
 104         if (sp->pix) {
 105                 /* Adjust position */
 106                 if (sp->bx < FL_abs(ob->bw) + 1) {
 107                         xx = FL_abs(ob->bw) - sp->bx + 1;
 108                         mx = ob->x + FL_abs(ob->bw) + 1;
 109                 } else  {
 110                         xx = 0;
 111                         mx = ob->x + sp->bx;
 112                 }
 113                 if (sp->by < FL_abs(ob->bw) + 1)  {
 114                         yy = FL_abs(ob->bw) - sp->by + 1;
 115                         my = ob->y + FL_abs(ob->bw) + 1;
 116                 } else   {
 117                         yy = 0;
 118                         my = ob->y + sp->by;
 119                 }
 120                 ww = (mx + sp->bw < ob->x + ob->w - FL_abs(ob->bw)) ?
 121                         sp->bw: ob->x + ob->w - FL_abs(ob->bw) - mx;
 122                 hh = (my + sp->bh < ob->y + ob->h - FL_abs(ob->bw)) ?
 123                         sp->bh: ob->y + ob->h - FL_abs(ob->bw) - my;
 124
 125                 i = FL_abs(ob->bw);
 126                 j = hh - ((lx) ? sp->dy+2*i: 0);
 127                 XCopyArea(fl_display, sp->pix, fl_winget(), gc, xx, yy, ww, j, mx, my);
 128                 XFlush(fl_display);
 129                 if (lx) {
 130                         XCopyArea(fl_display, sp->pix, fl_winget(), gc, xx,
 131                                           yy+j, lx*sp->dx-2*i, hh-j, mx, my+j);
 132                         XFlush(fl_display);
 133                 }
 134         }
 135
 136
 137         /* draw the grid if type > FLAT */
 138         if (ob->type > FL_BMTABLE_FLAT)  {
 139                 mx = ob->x + ob->w;
 140                 my = ob->y + ob->h;
 141                 ww = ob->w;
 142                 for (yy= ob->y; yy<= my; yy+= sp->dy) {
 143                         if (ob->boxtype!= FL_FLAT_BOX && (yy == ob->y || yy>my-sp->dy))
 144                                 continue;
 145                         if (lx>0 && yy>= my-sp->dy - sp->dy/2)
 146                                 ww = lx*sp->dx;
 147                         fl_diagline(ob->x, yy, ww, 1, FL_BOTTOM_BCOL);
 148                         fl_diagline(ob->x, yy+1, ww-2, 1, FL_TOP_BCOL);
 149                 }
 150                 hh = ob->h;
 151                 for (xx= ob->x; xx<= mx; xx+= sp->dx)  {
 152                         if (ob->boxtype!= FL_FLAT_BOX && (xx == ob->x || xx>mx-sp->dx))
 153                                 continue;
 154                         if (lx>0 && xx>= ob->x+lx*sp->dx)
 155                                 hh = (sp->ny-1)*sp->dy;
 156                         fl_diagline(xx, ob->y, 1, hh, FL_RIGHT_BCOL);
 157                         fl_diagline(xx+1, ob->y+1, 1, hh-2, FL_LEFT_BCOL);
 158                 }
 159         }
 160
 161         /* Simulate a pushed button */
 162         if (ob->pushed && 0 <= sp->i && sp->i < sp->maxi)  {
 163                 i = sp->i % sp->nx;
 164                 j = sp->i/sp->nx;
 165                 ww = sp->dx-2*FL_abs(ob->bw);
 166                 hh = sp->dy-2*FL_abs(ob->bw);
 167                 xx = ob->x + sp->dx*i + FL_abs(ob->bw);
 168                 yy = ob->y + sp->dy*j + FL_abs(ob->bw);
 169                 fl_drw_frame(FL_DOWN_FRAME, xx, yy, ww, hh, ob->col1, ob->bw);
 170         }
 171 }
 172
 173
 174 int handle_bitmaptable(FL_OBJECT * ob, int event, FL_Coord mx,
 175                                   FL_Coord my, int key, void * xev)
 176 {
 177         int i, j;
 178         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 179
 180         switch (event)  {
 181     case FL_DRAW:
 182                 draw_bitmaptable(ob);
 183                 break;
 184     case FL_MOUSE:
 185                 if (!ob->belowmouse) {    /* This never happens. Why? */
 186                         sp->i = -1;
 187                         fl_redraw_object(ob);
 188                         break;
 189                 }
 190                 i = (mx - ob->x)/sp->dx;  j = (my - ob->y)/sp->dy;
 191                 if (i>= 0 && i< sp->nx && j>= 0 && j< sp->ny)   {
 192                         i += j*sp->nx;
 193                         if (i >= sp->maxi) i = -1;
 194                         if (sp->i !=  i)  {
 195                                 sp->i = i;
 196                                 fl_redraw_object(ob);
 197                         }
 198                 }
 199                 break;
 200     case FL_PUSH:
 201                 sp->mousebut = key;
 202                 i = (mx - ob->x)/sp->dx + ((my - ob->y)/sp->dy)*sp->nx;
 203                 if (0 <= i && i < sp->maxi)  {
 204                         sp->i =  i;
 205                         fl_redraw_object(ob);
 206                 } else
 207                         sp->i =  -1;
 208                 break;
 209     case FL_RELEASE:
 210                 fl_redraw_object(ob);
 211                 return 1;
 212     case FL_FREEMEM:
 213             if (sp->pix) {
 214                     XFreePixmap(fl_display, sp->pix);
 215                     XFlush(fl_display);
 216             }
 217                 fl_free(((BMTABLE_SPEC*)ob->spec));
 218                 break;
 219         }
 220         return 0;
 221 }
 222
 223
 224 /*
 225  * The table has nx columns of dx width each and ny rows of dy height each.
 226  * Initially the position of the firts item is supposed to be the same that
 227  * the object position (x, y), and the number of items is supposed to be
 228  * exactly nx*ny.
 229  *
 230  * The user could change these later. See below.
 231  */
 232 void fl_set_bmtable_data(FL_OBJECT * ob, int nx, int ny, int bw, int bh,
 233                         unsigned char const * bdata)
 234 {
 235    BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 236    if (sp) {
 237      sp->nx = nx;
 238      sp->ny = ny;
 239      sp->bx = FL_abs(ob->bw);
 240      sp->by = FL_abs(ob->bw);
 241      sp->dx = ob->w/nx;
 242      sp->dy = ob->h/ny;
 243      sp->i = -1;
 244      sp->maxi = sp->nx * sp->ny;
 245      sp->bw = bw;
 246      sp->bh = bh;
 247      sp->bdata = bdata;
 248    }
 249 }
 250
 251
 252 void fl_set_bmtable_pixmap_data(FL_OBJECT * ob, int nx, int ny,
 253                         char ** pdata)
 254 {
 255         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 256         extern Colormap color_map;
 257         if (sp) {
 258                 Pixmap dummy_shapemask = 0;
 259                 XpmAttributes dumb_attributes;
 260                 sp->nx = nx;
 261                 sp->ny = ny;
 262                 sp->bx = FL_abs(ob->bw);
 263                 sp->by = FL_abs(ob->bw);
 264                 sp->dx = ob->w/nx;
 265                 sp->dy = ob->h/ny;
 266                 sp->i = -1;
 267                 sp->maxi = sp->nx * sp->ny;
 268                 sp->bdata = 0;
 269                 dumb_attributes.colormap = color_map;
 270                 dumb_attributes.closeness = 30000;
 271                 dumb_attributes.valuemask = XpmColormap | XpmCloseness;
 272                 if (XCreatePixmapFromData(fl_display, fl_winget(), pdata,
 273                                           &(sp->pix), &dummy_shapemask,
 274                                           &dumb_attributes) == XpmSuccess) {
 275                         sp->bw = dumb_attributes.width;
 276                         sp->bh = dumb_attributes.height;
 277                         XpmFreeAttributes(&dumb_attributes);
 278                         if (dummy_shapemask) {
 279                                 XFreePixmap(fl_display, dummy_shapemask);
 280                         }
 281                 }
 282                 XFlush(fl_display);
 283         }
 284 }
 285
 286
 287 /*
 288  *  This function works only for X11R6 or later
 289  */
 290 #if XlibSpecificationRelease > 5
 291
 292 void fl_set_bmtable_file(FL_OBJECT * ob, int nx, int ny, char const * filename)
 293 {
 294    int xh, yh;
 295    unsigned int bw, bh;
 296    unsigned char * bdata;
 297
 298    if(XReadBitmapFileData(filename, &bw, &bh,
 299                           &bdata, &xh, &yh) == BitmapSuccess)
 300      fl_set_bmtable_data(ob, nx, ny, bw, bh, bdata);
 301    XFlush(fl_display);
 302 }
 303
 304 #else
 305
 306 void fl_set_bmtable_file(FL_OBJECT * ob, int nx, int ny, char const * filename)
 307 {
 308   fprintf(stderr, "Set bmtable file: Sorry, I need X11 release 6 to do "
 309            "work!\n");
 310 }
 311
 312 #endif
 313
 314
 315
 316 void fl_set_bmtable_pixmap_file(FL_OBJECT *ob, int nx, int ny, char const *filename)
 317 {
 318         extern Colormap color_map;
 319         BMTABLE_SPEC *sp = (BMTABLE_SPEC *)ob->spec;
 320         if (sp) {
 321                 Pixmap dummy_shapemask = 0;
 322                 XpmAttributes dumb_attributes;
 323                 sp->nx = nx;
 324                 sp->ny = ny;
 325                 sp->bx = FL_abs(ob->bw);
 326                 sp->by = FL_abs(ob->bw);
 327                 sp->dx = ob->w/nx;
 328                 sp->dy = ob->h/ny;
 329                 sp->i = -1;
 330                 sp->maxi = sp->nx * sp->ny;
 331                 sp->bdata = 0;
 332
 333                 dumb_attributes.colormap = color_map;
 334                 dumb_attributes.closeness = 30000;
 335                 dumb_attributes.valuemask = XpmColormap | XpmCloseness;
 336
 337                 if (XReadPixmapFile(fl_display, fl_winget(), (char *)filename,
 338                                     &(sp->pix), &dummy_shapemask,
 339                                     &dumb_attributes) == XpmSuccess) {
 340                         sp->bw = dumb_attributes.width;
 341                         sp->bh = dumb_attributes.height;
 342                         XpmFreeAttributes(&dumb_attributes);
 343                         if (dummy_shapemask) {
 344                                 XFreePixmap(fl_display, dummy_shapemask);
 345                         }
 346                 }
 347                 XFlush(fl_display);
 348         }
 349 }
 350
 351
 352 /*
 353  * This function allows to adjust the position of the first item and its
 354  * size (dx, dy). The input values are incremental, not absolute.
 355  */
 356 void fl_set_bmtable_adjust(FL_OBJECT *ob, int px, int py, int dx, int dy)
 357 {
 358    BMTABLE_SPEC *sp = (BMTABLE_SPEC *)ob->spec;
 359    if (sp) {
 360      sp->bx += px;
 361      sp->by += py;
 362      sp->dx += dx;
 363      sp->dy += dy;
 364    }
 365 }
 366
 367 /*
 368  * This function returns the table's selected position.
 369  */
 370 int fl_get_bmtable(FL_OBJECT *ob)
 371 {
 372    if ((BMTABLE_SPEC *)ob->spec)
 373      return  ((BMTABLE_SPEC *)ob->spec)->i;
 374    else
 375      return 0;
 376 }
 377
 378
 379 /*
 380  * You can change the max number of items if you want.
 381  */
 382 void fl_set_bmtable_maxitems(FL_OBJECT * ob, int i)
 383 {
 384    if (i > 0 && (BMTABLE_SPEC *)ob->spec)
 385      ((BMTABLE_SPEC *)ob->spec)->maxi = i;
 386 }
 387
 388
 389 int fl_get_bmtable_maxitems(FL_OBJECT * ob)
 390 {
 391    if ((BMTABLE_SPEC *)ob->spec)
 392      return  ((BMTABLE_SPEC *)ob->spec)->maxi;
 393    else
 394      return 0;
 395 }
 396
 397
 398 void fl_replace_bmtable_item(FL_OBJECT * ob, int id, int cw, int ch, char * data)
 399 {
 400    fprintf(stderr, "Replace bmtable item: Sorry, not yet implemented!\n");
 401 }
 402
 403
 404 void fl_get_bmtable_item(FL_OBJECT * ob, int id, int * cw, int * ch, char * data)
 405 {
 406    fprintf(stderr, "Get bmtable item: Sorry, not yet implemented!\n");
 407 }
 408
 409 void fl_set_bmtable(FL_OBJECT * ob, int pushed, int pos)
 410 {
 411    if ((BMTABLE_SPEC *)ob->spec)
 412      ((BMTABLE_SPEC *)ob->spec)->i = (pushed) ? pos: -1;
 413 }
 414
 415
 416 int fl_get_bmtable_numb(FL_OBJECT *ob)
 417 {
 418    if ((BMTABLE_SPEC *)ob->spec)
 419      return ((BMTABLE_SPEC *)ob->spec)->mousebut;
 420    else
 421      return 0;
 422 }
 423
 424
 425 Pixmap fl_get_bmtable_pixmap(FL_OBJECT * ob)
 426 {
 427    if ((BMTABLE_SPEC *)ob->spec)
 428      return ((BMTABLE_SPEC *)ob->spec)->pix;
 429    else
 430      return 0;
 431 }
 432
 433
 434 void fl_draw_bmtable_item(FL_OBJECT * ob, int i, Drawable d, int xx, int yy)
 435 {
 436    int x, y, w, h;
 437    GC gc = fl_state[fl_get_vclass()].gc[0];
 438    BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 439
 440    if (sp && sp->pix) {
 441       x = (i % sp->nx)*sp->dx + FL_abs(ob->bw);
 442       y = (i/sp->nx)*sp->dy + FL_abs(ob->bw);
 443       w = sp->dx-2*FL_abs(ob->bw);
 444       h = sp->dy-2*FL_abs(ob->bw);
 445       XCopyArea(fl_display, sp->pix, d, gc, x, y, w, h, xx, yy);
 446       XFlush(fl_display);
 447    }
 448 }
 449
 450 /* Free the current bitmap and pixmap in preparation for installing a new one */
 451 void fl_free_bmtable_bitmap(FL_OBJECT * ob)
 452 {
 453   BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 454
 455   /* dump the temporary pixmap */
 456   if (sp && sp->pix) {
 457     XFreePixmap(fl_display, sp->pix);
 458     XFlush(fl_display);
 459     sp->pix = 0;
 460   }
 461
 462   /* and free the space taken by bdata etc. */
 463   if (sp && sp->bdata) {
 464     fl_free((void*)sp->bdata);
 465     sp->bdata = 0;
 466   }
 467 }
 468
 469 /* Free the current pixmap in preparation for installing a new one */
 470 /* This is needed when using data instead of files to set bitmaps  */
 471 void fl_free_bmtable_pixmap(FL_OBJECT *ob)
 472 {
 473   BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 474
 475   /* dump the temporary pixmap */
 476   if (sp && sp->pix) {
 477     XFreePixmap(fl_display, sp->pix);
 478     XFlush(fl_display);
 479     sp->pix = 0;
 480   }
 481 }
 482
 483 #if defined(__cplusplus)
 484 }
 485 #endif