src/frontends/xforms/bmtable.c

   1 /**
   2  * \file bmtable.c
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alejandro Aguilar Sierra
   7  *
   8  * Full author contact details are available in file CREDITS
   9  */
  10
  11 #include <config.h>
  12
  13 #include <stdlib.h>
  14 #include "bmtable.h"
  15 #include "lyx_xpm.h"
  16
  17 #if defined(__cplusplus)
  18 extern "C"
  19 {
  20 #endif
  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 const * 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 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         GC gc = fl_state[fl_get_vclass()].gc[0];
  73         if (!sp) return;
  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_get_display(), fl_winget(),
  92                                                               (char*)sp->bdata,
  93                                                               sp->bw, sp->bh,
  94                                                               fl_get_flcolor(ob->lcol), fl_get_flcolor(ob->col1),
  95                                                               /*DefaultDepth(fl_get_display(), DefaultScreen(fl_get_display()))*/ fl_state[fl_get_vclass()].depth);
  96                         XFlush(fl_get_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_get_display(), sp->pix, fl_winget(), gc, xx, yy, ww, j, mx, my);
 123                 XFlush(fl_get_display());
 124                 if (lx) {
 125                         XCopyArea(fl_get_display(), sp->pix, fl_winget(), gc, xx,
 126                                   yy+j, lx*sp->dx-2*i, hh-j, mx, my+j);
 127                         XFlush(fl_get_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 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_get_display(), sp->pix);
 210                         XFlush(fl_get_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 const * 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         if (sp) {
 252                 Pixmap dummy_shapemask = 0;
 253                 XpmAttributes dumb_attributes = { 0 };
 254                 sp->nx = nx;
 255                 sp->ny = ny;
 256                 sp->bx = FL_abs(ob->bw);
 257                 sp->by = FL_abs(ob->bw);
 258                 sp->dx = ob->w/nx;
 259                 sp->dy = ob->h/ny;
 260                 sp->i = -1;
 261                 sp->maxi = sp->nx * sp->ny;
 262                 sp->bdata = 0;
 263                 dumb_attributes.colormap = fl_state[fl_get_vclass()].colormap;
 264                 dumb_attributes.closeness = 30000;
 265                 dumb_attributes.valuemask = XpmColormap | XpmCloseness;
 266                 if (XCreatePixmapFromData(fl_get_display(), fl_winget(), pdata,
 267                                           &(sp->pix), &dummy_shapemask,
 268                                           &dumb_attributes) == XpmSuccess) {
 269                         sp->bw = dumb_attributes.width;
 270                         sp->bh = dumb_attributes.height;
 271                         XpmFreeAttributes(&dumb_attributes);
 272                         if (dummy_shapemask) {
 273                                 XFreePixmap(fl_get_display(), dummy_shapemask);
 274                         }
 275                 }
 276         }
 277 }
 278
 279
 280 /*
 281  *  This function works only for X11R6 or later
 282  */
 283 #if XlibSpecificationRelease > 5
 284
 285 void fl_set_bmtable_file(FL_OBJECT * ob, int nx, int ny, char const * filename)
 286 {
 287         int xh;
 288         int yh;
 289         unsigned int bw;
 290         unsigned int 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_get_display());
 297 }
 298
 299 #else
 300
 301 void fl_set_bmtable_file(FL_OBJECT * ob, int nx, int ny, char const * filename)
 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                 Pixmap dummy_shapemask = 0;
 317                 XpmAttributes dumb_attributes = { 0 };
 318                 XpmColorSymbol xpm_col;
 319                 sp->nx = nx;
 320                 sp->ny = ny;
 321                 sp->bx = FL_abs(ob->bw);
 322                 sp->by = FL_abs(ob->bw);
 323                 sp->dx = ob->w/nx;
 324                 sp->dy = ob->h/ny;
 325                 sp->i = -1;
 326                 sp->maxi = sp->nx * sp->ny;
 327                 sp->bdata = 0;
 328
 329                 xpm_col.name = NULL;
 330                 xpm_col.value = "None";
 331                 xpm_col.pixel = fl_get_flcolor(ob->col1);
 332                 dumb_attributes.colormap = fl_state[fl_get_vclass()].colormap;
 333                 dumb_attributes.numsymbols = 1;
 334                 dumb_attributes.colorsymbols = &xpm_col;
 335                 dumb_attributes.closeness = 30000;
 336                 dumb_attributes.valuemask = XpmColormap | XpmCloseness | XpmColorSymbols;
 337
 338                 if (XReadPixmapFile(fl_get_display(), fl_winget(), (char *)filename,
 339                                     &(sp->pix), &dummy_shapemask,
 340                                     &dumb_attributes) == XpmSuccess) {
 341                         sp->bw = dumb_attributes.width;
 342                         sp->bh = dumb_attributes.height;
 343                         XpmFreeAttributes(&dumb_attributes);
 344                         if (dummy_shapemask) {
 345                                 XFreePixmap(fl_get_display(), dummy_shapemask);
 346                         }
 347                 }
 348                 /* XFlush(fl_get_display()); */
 349         }
 350 }
 351
 352
 353 /*
 354  * This function allows to adjust the position of the first item and its
 355  * size (dx, dy). The input values are incremental, not absolute.
 356  */
 357 void fl_set_bmtable_adjust(FL_OBJECT *ob, int px, int py, int dx, int dy)
 358 {
 359         BMTABLE_SPEC *sp = (BMTABLE_SPEC *)ob->spec;
 360         if (sp) {
 361                 sp->bx += px;
 362                 sp->by += py;
 363                 sp->dx += dx;
 364                 sp->dy += dy;
 365         }
 366 }
 367
 368 /*
 369  * This function returns the table's selected position.
 370  */
 371 int fl_get_bmtable(FL_OBJECT *ob)
 372 {
 373         if ((BMTABLE_SPEC *)ob->spec)
 374                 return  ((BMTABLE_SPEC *)ob->spec)->i;
 375         else
 376                 return 0;
 377 }
 378
 379
 380 /*
 381  * You can change the max number of items if you want.
 382  */
 383 void fl_set_bmtable_maxitems(FL_OBJECT * ob, int i)
 384 {
 385         if (i > 0 && (BMTABLE_SPEC *)ob->spec)
 386                 ((BMTABLE_SPEC *)ob->spec)->maxi = i;
 387 }
 388
 389
 390 int fl_get_bmtable_maxitems(FL_OBJECT * ob)
 391 {
 392         if ((BMTABLE_SPEC *)ob->spec)
 393                 return  ((BMTABLE_SPEC *)ob->spec)->maxi;
 394         else
 395                 return 0;
 396 }
 397
 398
 399 void fl_replace_bmtable_item(FL_OBJECT * ob, int id, int cw, int ch, char * data)
 400 {
 401         fprintf(stderr, "Replace bmtable item: Sorry, not yet implemented!\n");
 402 }
 403
 404
 405 void fl_get_bmtable_item(FL_OBJECT * ob, int id, int * cw, int * ch, char * data)
 406 {
 407         fprintf(stderr, "Get bmtable item: Sorry, not yet implemented!\n");
 408 }
 409
 410 void fl_set_bmtable(FL_OBJECT * ob, int pushed, int pos)
 411 {
 412         if ((BMTABLE_SPEC *)ob->spec)
 413                 ((BMTABLE_SPEC *)ob->spec)->i = (pushed) ? pos: -1;
 414 }
 415
 416
 417 int fl_get_bmtable_numb(FL_OBJECT *ob)
 418 {
 419         if ((BMTABLE_SPEC *)ob->spec)
 420                 return ((BMTABLE_SPEC *)ob->spec)->mousebut;
 421         else
 422                 return 0;
 423 }
 424
 425
 426 Pixmap fl_get_bmtable_pixmap(FL_OBJECT * ob)
 427 {
 428         if ((BMTABLE_SPEC *)ob->spec)
 429                 return ((BMTABLE_SPEC *)ob->spec)->pix;
 430         else
 431                 return 0;
 432 }
 433
 434
 435 void fl_draw_bmtable_item(FL_OBJECT * ob, int i, Drawable d, int xx, int yy)
 436 {
 437         int x;
 438         int y;
 439         int w;
 440         int h;
 441         GC gc = fl_state[fl_get_vclass()].gc[0];
 442         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 443
 444         if (sp && sp->pix) {
 445                 x = (i % sp->nx)*sp->dx + FL_abs(ob->bw);
 446                 y = (i/sp->nx)*sp->dy + FL_abs(ob->bw);
 447                 w = sp->dx-2*FL_abs(ob->bw);
 448                 h = sp->dy-2*FL_abs(ob->bw);
 449                 XCopyArea(fl_get_display(), sp->pix, d, gc, x, y, w, h, xx, yy);
 450                 XFlush(fl_get_display());
 451         }
 452 }
 453
 454 /* Free the current bitmap and pixmap in preparation for installing a new one */
 455 void fl_free_bmtable_bitmap(FL_OBJECT * ob)
 456 {
 457         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 458
 459         /* dump the temporary pixmap */
 460         if (sp && sp->pix) {
 461                 XFreePixmap(fl_get_display(), sp->pix);
 462                 XFlush(fl_get_display());
 463                 sp->pix = 0;
 464         }
 465
 466         /* and free the space taken by bdata etc. */
 467         if (sp && sp->bdata) {
 468                 fl_free((void*)sp->bdata);
 469                 sp->bdata = 0;
 470         }
 471 }
 472
 473 /* Free the current pixmap in preparation for installing a new one */
 474 /* This is needed when using data instead of files to set bitmaps  */
 475 void fl_free_bmtable_pixmap(FL_OBJECT *ob)
 476 {
 477         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 478
 479         /* dump the temporary pixmap */
 480         if (sp && sp->pix) {
 481                 XFreePixmap(fl_get_display(), sp->pix);
 482                 XFlush(fl_get_display());
 483                 sp->pix = 0;
 484         }
 485 }
 486
 487 #if defined(__cplusplus)
 488 }
 489 #endif