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