mdw@git.distorted.org.uk Git - ssr/blob - StraySrc/Glass/!Glass/c/wIcons

   1 /*
   2  * wIcons.c
   3  *
   4  * Manipulation of icons within template windows
   5  *
   6  * © 1994-1998 Straylight
   7  */
   8
   9 /*----- Licensing note ----------------------------------------------------*
  10  *
  11  * This file is part of Straylight's Glass.
  12  *
  13  * Glass is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2, or (at your option)
  16  * any later version.
  17  *
  18  * Glass is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with Glass.  If not, write to the Free Software Foundation,
  25  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26  */
  27
  28 /*----- Header files ------------------------------------------------------*/
  29
  30 /*
  31  * ANSI standard headers
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 /*
  39  * Steel headers
  40  */
  41
  42 #define _STDAPP
  43 #define _LOWLVL
  44 #include "steel/Steel.h"
  45
  46 #include "steel/interface.h"
  47 #include "steel/sculptrix.h"
  48 #include "steel/flex.h"
  49 #include "steel/bbc.h"
  50 #include "steel/font.h"
  51
  52 /*
  53  * Glass headers
  54  */
  55
  56 #include "gStruct.h"
  57 #include "gMenus.h"
  58 #include "gIcons.h"
  59
  60 #include "glass.h"
  61 #include "gPrefs.h"
  62 #include "tfile.h"
  63 #include "window.h"
  64 #include "_window.h"
  65 #include "editIcon.h"
  66 #include "indir.h"
  67 #include "iconData.h"
  68 #include "tearEdit.h"
  69
  70 /*----- Main code ---------------------------------------------------------*/
  71
  72 /*
  73  * void window__bound(wimp_icon *i,wimp_box *box,BOOL force)
  74  *
  75  * Use
  76  *  Works out the bounding box (including 3D border) of the given pseudoicon.
  77  *
  78  * Parameters
  79  *  wimp_icon *i == pointer to an icon definition
  80  *  wimp_box *box == where to put the result
  81  *  BOOL force == force reading of the border, even if disabled in prefs
  82  */
  83
  84 void window__bound(wimp_icon *i,wimp_box *box,BOOL force)
  85 {
  86   os_regset r;
  87   wimp_icon j;
  88
  89   /* --- Get the answer from Sculptrix --- */
  90
  91   j=*i;
  92   if (gPrefs_current()->sDispBorders &&
  93       (force || gPrefs_current()->sIncBorder) &&
  94       sculptrix_boundingBox(&j))
  95   {
  96     *box=j.box;
  97     return;
  98   }
  99
 100   /* --- Ask Interface if there's a bounding box at all --- */
 101
 102   if (gPrefs_current()->iDispBorders &&
 103       (force || gPrefs_current()->iIncBorder))
 104   {
 105     r.r[1]=(int)&j;
 106     wimpt_noerr(os_swix(XInterface_BoundingBox,&r));
 107     *box=j.box;
 108   }
 109   else
 110     *box=i->box;
 111
 112   /* --- Now ask WimpExtension --- */
 113
 114   if (gPrefs_current()->wDispBorders &&
 115       (force || gPrefs_current()->wIncBorder))
 116   {
 117     r.r[0]=2;
 118     r.r[1]=(int)i;
 119     wimpt_noerr(os_swix(XWimpExt_BorderOp,&r));
 120     box->x0=min2(box->x0,r.r[2]);
 121     box->y0=min2(box->y0,r.r[3]);
 122     box->x1=max2(box->x1,r.r[4]);
 123     box->y1=max2(box->y1,r.r[5]);
 124   }
 125 }
 126
 127 /*
 128  * void window__removeTrailingDeleted(glass_windPointer *w)
 129  *
 130  * Use
 131  *  Removes trailing deleted icons from a window (i.e. ones that can be
 132  *  safely deleted properly without messing up icon numbers).
 133  *
 134  * Parameters
 135  *  glass_windPointer *w == the window to blitz
 136  */
 137
 138 void window__removeTrailingDeleted(glass_windPointer *w)
 139 {
 140   int i=w->def->desc.w.nicons-1;
 141   int dead=0;
 142   while (w->def->i[i].i.flags & wimp_IDELETED)
 143   {
 144     i--;                         /* Now points to top undeleted icon       */
 145     dead++;
 146   }
 147   flex_extend((flex_ptr)&w->def,
 148               sizeof(glass_window)+
 149               i*sizeof(glass_iconDescription));
 150   w->size-=dead*sizeof(glass_iconDescription);
 151   w->def->desc.w.nicons-=dead;
 152 }
 153
 154 /*
 155  * int window__createIcon(glass_windPointer *w)
 156  *
 157  * Use
 158  *  Creates a slot for an icon in the window specified, according to current
 159  *  preferences.  The contents of the icon array are unspecified (and
 160  *  probably not too useful).
 161  *
 162  * Parameters
 163  *  glass_windPointer *w == the window to create the icon in
 164  *
 165  * Returns
 166  *  Icon number that can be used, or -1 if the operation failed.
 167  */
 168
 169 int window__createIcon(glass_windPointer *w)
 170 {
 171   int i;
 172
 173   /* --- Find a space to create the icon --- *
 174    *
 175    * If we're using up deleted spaces, then loop through to find the lowest
 176    * free one.
 177    */
 178
 179   if (!gPrefs_current()->mCreateTop)
 180   {
 181     for (i=0;i<w->def->desc.w.nicons;i++)
 182     {
 183       if (w->def->i[i].i.flags & wimp_IDELETED)
 184       {
 185         w->def->i[i].selected=FALSE;
 186         w->def->i[i].edit=0;
 187         return (i);
 188       }
 189     }
 190   }
 191   else
 192     i=w->def->desc.w.nicons;
 193
 194   /* --- We need to add a new icon on the end --- */
 195
 196   if (!flex_extend((flex_ptr)&w->def,
 197                    sizeof(glass_window)+
 198                    i*sizeof(glass_iconDescription)))
 199   {
 200     werr(FALSE,msgs_lookup("wdNEMCI"));
 201     return (-1);
 202   }
 203   w->def->desc.w.nicons++;
 204   w->size+=sizeof(glass_iconDescription);
 205   w->def->i[i].selected=FALSE;
 206   w->def->i[i].copied=FALSE;
 207   w->def->i[i].edit=0;
 208   return (i);
 209 }
 210
 211 /*
 212  * void window__renumber(glass_windPointer *w,BOOL renum)
 213  *
 214  * Use
 215  *  Sets the renumber flag of the given window to the given state.
 216  *  Everything is set up properly according to the new state.
 217  *
 218  * Parameters
 219  *  glass_windPointer *w == the window to renumber
 220  *  BOOL renum == the new state of the flag
 221  */
 222
 223 void window__renumber(glass_windPointer *w,BOOL renum)
 224 {
 225   int i;
 226
 227   /* --- Make sure we've got something to do --- */
 228
 229   if (renum==w->renumber)
 230     return;
 231
 232   /* --- Unselect all the guidelines --- */
 233
 234   for (i=0;i<glass_GUIDELIMIT;i++)
 235   {
 236     if (w->guide[i].selected)
 237     {
 238       w->guide[i].selected=FALSE;
 239       window__redrawGuide(w,i);
 240     }
 241   }
 242
 243   /* --- Now change the selection boxes for all the icons --- *
 244    *
 245    * For each one, we undraw the old box, change the renumber state, and
 246    * draw the new one.  Klugey, but it works.
 247    */
 248
 249   for (i=0;i<w->def->desc.w.nicons;i++)
 250   {
 251     if (w->def->i[i].selected)
 252     {
 253       window__select(w,i,FALSE);
 254       w->renumber=!w->renumber;
 255       window__select(w,i,TRUE);
 256       w->renumber=!w->renumber;
 257     }
 258   }
 259
 260   /* --- Update the window state information, and the info bar --- */
 261
 262   w->renumber=!w->renumber;
 263   window__toggleRenumber(w);
 264 }
 265
 266 /*
 267  * void window__copyIcons(glass_windPointer *w)
 268  *
 269  * Use
 270  *  Copies the selected icons into the given window.  If the icons are
 271  *  already in the given window, they are duplicated and offset by a small
 272  *  quantity.  If the icons are in a different window, then they are
 273  *  centred over the current visible area.
 274  *
 275  * Parameters
 276  *  glass_windPointer *w == the window to put the icons
 277  */
 278
 279 void window__copyIcons(glass_windPointer *w)
 280 {
 281   int xoff;
 282   int yoff;
 283   wimp_box bound;
 284   BOOL started;
 285   int i;
 286   wimp_wstate s;
 287   int ni;
 288   BOOL fonterr=FALSE;
 289   glass_windPointer *wso=window_selectionOwner();
 290
 291   /* --- Work out where to put the selected icons --- *
 292    *
 293    * If we're copying to the same window, we just displace them a bit.  If
 294    * we're copying between windows, we need to centre them in the new
 295    * window.
 296    */
 297
 298   if (w==wso)
 299   {
 300     xoff=w->gridx;
 301     yoff=-w->gridy;
 302   }
 303   else
 304   {
 305     started=FALSE;
 306
 307     /* --- Calculate the bounding box of the selection --- */
 308
 309     for (i=0;i<wso->def->desc.w.nicons;i++)
 310     {
 311       if (wso->def->i[i].selected)
 312       {
 313         if (started)
 314         {
 315           if (wso->def->i[i].i.box.x0<bound.x0)
 316             bound.x0=wso->def->i[i].i.box.x0;
 317           if (wso->def->i[i].i.box.x1>bound.x1)
 318             bound.x1=wso->def->i[i].i.box.x1;
 319           if (wso->def->i[i].i.box.y0<bound.y0)
 320             bound.y0=wso->def->i[i].i.box.y0;
 321           if (wso->def->i[i].i.box.y1>bound.y1)
 322             bound.y1=wso->def->i[i].i.box.y1;
 323         }
 324         else
 325         {
 326           bound=wso->def->i[i].i.box;
 327           started=TRUE;
 328         }
 329       }
 330     }
 331
 332     /* --- Work out how to centre the icons --- */
 333
 334     wimpt_noerr(wimp_get_wind_state(w->h,&s));
 335     xoff=(s.o.x+(s.o.box.x1-s.o.box.x0)/2-(bound.x1-bound.x0)/2);
 336     yoff=(s.o.y-(s.o.box.y1-s.o.box.y0)/2-(bound.y1-bound.y0)/2);
 337     xoff-=bound.x0;
 338     yoff-=bound.y0;
 339
 340     /* --- If there's a grid lock, keep the same grid alignment --- */
 341
 342     if (w->gridLock)
 343       window__align(w,&xoff,&yoff);
 344
 345     /* --- Also retain the pixel alignment --- */
 346
 347     xoff&=~(wimpt_dx()-1);
 348     yoff&=~(wimpt_dy()-1);
 349   }
 350
 351   /* --- We've altered the template file --- */
 352
 353   tfile_markAsAltered(w->t);
 354
 355   /* --- Now actually do the copy --- */
 356
 357   for (i=0;i<wso->def->desc.w.nicons;i++)
 358   {
 359     if (wso->def->i[i].selected)
 360     {
 361
 362       /* --- Find out there to put the copy --- */
 363
 364       ni=window__createIcon(w);
 365       if (ni==-1)
 366         return;
 367
 368       /* --- Reposition the copied icon nicely --- */
 369
 370       w->def->i[ni].i=wso->def->i[i].i;
 371       w->def->i[ni].i.box.x0+=xoff;
 372       w->def->i[ni].i.box.x1+=xoff;
 373       w->def->i[ni].i.box.y0+=yoff;
 374       w->def->i[ni].i.box.y1+=yoff;
 375
 376       /* --- Set up the copied icon's font information --- */
 377
 378       if (!iconData_handleFont(w,&w->def->i[ni].i.flags) && !fonterr)
 379       {
 380         werr(FALSE,msgs_lookup("wdFERCPY"));
 381         fonterr=TRUE;
 382       }
 383
 384       /* --- Set up the copied icon's indirected data nicely --- */
 385
 386       if (!iconData_processIcon(w,ni,0,TRUE,0))
 387       {
 388         werr(FALSE,msgs_lookup("wdNEMCP"));
 389         w->def->i[ni].i.flags&=~wimp_INDIRECT;
 390         window_deleteIcon(w,ni);
 391         return;
 392       }
 393       window_redrawIcon(w,ni);
 394       w->def->i[ni].copied=TRUE;
 395     }
 396   }
 397
 398   /* --- Now move the selection across, and select the copies --- */
 399
 400   for (i=0;i<wso->def->desc.w.nicons;i++)
 401     window__select(wso,i,FALSE);
 402   for (i=0;i<w->def->desc.w.nicons;i++)
 403   {
 404     if (w->def->i[i].copied)
 405       window__select(w,i,TRUE);
 406     w->def->i[i].copied=FALSE;
 407   }
 408   window__gainSelection(w);
 409 }
 410
 411 /*
 412  * void window__nudgeIcons(glass_windPointer *w,wimp_box *nudge)
 413  *
 414  * Use
 415  *  Nudges the selected icons in the specified window, by adding the box
 416  *  given to each icon's bounding box.  The nudge box is multiplied either by
 417  *  the current grid size (if grid lock is enabled) or by the pixel size (if
 418  *  it isn't) before addition.  A nudge is considered to be a single
 419  *  alteration for the purposes of autosave-counting.  If no icons are moved
 420  *  then the selected guidelines are moved instead.
 421  *
 422  * Parameters
 423  *  glass_windPointer *w == the window containing the icons to nudge
 424  *  wimp_box *nudge == the box to add to the coordinates of the icons
 425  */
 426
 427 void window__nudgeIcons(glass_windPointer *w,wimp_box *nudge)
 428 {
 429   int i;
 430   wimp_box b;
 431   wimp_box *bp;
 432   BOOL doneOne=FALSE;
 433
 434   /* --- Make sure we're not dragging something --- */
 435
 436   if (window__qDragType()!=-1)
 437     return;
 438
 439   /* --- Multiply up the nudge rectangle --- */
 440
 441   if (w->gridLock)
 442   {
 443     nudge->x0*=w->gridx;
 444     nudge->y0*=w->gridy;
 445     nudge->x1*=w->gridx;
 446     nudge->y1*=w->gridy;
 447   }
 448   else
 449   {
 450     nudge->x0*=wimpt_dx();
 451     nudge->y0*=wimpt_dy();
 452     nudge->x1*=wimpt_dx();
 453     nudge->y1*=wimpt_dy();
 454   }
 455
 456   /* --- Nudge the selected icons --- *
 457    *
 458    * Remember to make sure that we don't turn the icon inside-out.
 459    */
 460
 461   for (i=0;i<w->def->desc.w.nicons;i++)
 462   {
 463     if (w->def->i[i].selected)
 464     {
 465       doneOne=TRUE;
 466       window_boundingBox(w,i,&b);
 467       bp=&w->def->i[i].i.box;
 468       if (bp->x0+nudge->x0<=bp->x1+nudge->x1)
 469         b.x0+=nudge->x0;
 470       if (bp->x1+nudge->x1>=bp->x0+nudge->x0)
 471         b.x1+=nudge->x1;
 472       if (bp->y0+nudge->y0<=bp->y1+nudge->y1)
 473         b.y0+=nudge->y0;
 474       if (bp->y1+nudge->y1>=bp->y0+nudge->y0)
 475         b.y1+=nudge->y1;
 476       window_setBox(w,i,&b);
 477     }
 478   }
 479
 480   /* --- If no icons moved, nudge the guidelines --- *
 481    *
 482    * Only move guidelines if the box is sensible -- i.e. we're not just
 483    * moving an edge, we're moving the whole box either horizontally or
 484    * vertically
 485    */
 486
 487   if (!doneOne && nudge->x0==nudge->x1 && nudge->y0==nudge->y1)
 488   {
 489     for (i=0;i<glass_GUIDELIMIT;i++)
 490     {
 491       if (w->guide[i].selected)
 492       {
 493         doneOne=TRUE;
 494         window__redrawGuide(w,i);
 495         if (w->guide[i].horiz)
 496           w->guide[i].coord+=nudge->y0;
 497         else
 498           w->guide[i].coord+=nudge->x0;
 499         window__redrawGuide(w,i);
 500       }
 501     }
 502   }
 503
 504   /* --- If we did something, bump the alteration count --- */
 505
 506   if (!doneOne)
 507     bbc_vdu(7);
 508   else
 509     tfile_markAsAltered(w->t);
 510 }
 511
 512 /*
 513  * void window_boundingBox(glass_windPointer *w,int icon,wimp_box *box)
 514  *
 515  * Use
 516  *  Gets the bounding box of the icon given and returns it in the block
 517  *  pointed to by box
 518  *
 519  * Parameters
 520  *  glass_windPointer *w == the window containing the icon
 521  *  int icon == the icon to 'boxise'
 522  *  wimp_box *box == where to put the result
 523  */
 524
 525 void window_boundingBox(glass_windPointer *w,int icon,wimp_box *box)
 526 {
 527   window__bound(&w->def->i[icon].i,box,FALSE);
 528 }
 529
 530 /*
 531  * void window_setBox(glass_windPointer *w,int icon,wimp_box *box)
 532  *
 533  * Use
 534  *  Sets the icon bounding box to the box given, taking into account
 535  *  Interface borders and so on.
 536  *
 537  * Parameters
 538  *  glass_windPointer *w == the window containing the icon
 539  *  int icon == the icon number
 540  *  wimp_box *box == the new box for the icon
 541  */
 542
 543 void window_setBox(glass_windPointer *w,int icon,wimp_box *box)
 544 {
 545   wimp_box bound;
 546   window_boundingBox(w,icon,&bound);
 547   window_redrawIcon(w,icon);
 548   w->def->i[icon].i.box.x0+=box->x0-bound.x0;
 549   w->def->i[icon].i.box.x1+=box->x1-bound.x1;
 550   w->def->i[icon].i.box.y0+=box->y0-bound.y0;
 551   w->def->i[icon].i.box.y1+=box->y1-bound.y1;
 552   window_redrawIcon(w,icon);
 553   editIcon_iconMoved(w,icon);
 554 }
 555
 556 /*
 557  * void window_deleteIcon(glass_windPointer *w,int icon)
 558  *
 559  * Use
 560  *  Deletes the icon specified, good an' proper.
 561  *
 562  * Parameters
 563  *  glass_windPointer *w == the scene of the crime
 564  *  int icon == the victim...
 565  */
 566
 567 void window_deleteIcon(glass_windPointer *w,int icon)
 568 {
 569   int fhand;
 570   editIcon_close(w,icon);
 571
 572   if (w->def->i[icon].selected)
 573     w->selno--;
 574   if (w==window_selectionOwner() && icon==window__selectedIcon())
 575     window__setSelectedIcon(-1);
 576
 577   window_redrawIcon(w,icon);
 578   if (w->def->i[icon].i.flags & wimp_IFONT)
 579   {
 580     fhand=(w->def->i[icon].i.flags>>24) & 0xff;
 581     wimpt_noerr(font_lose(fhand));
 582     w->fonts[fhand]--;
 583   }
 584   if (w->def->i[icon].i.flags & wimp_INDIRECT)
 585   {
 586     w->size-=w->def->i[icon].i.data.indirecttext.bufflen;
 587     indir_free(w->def->i[icon].i.data.indirecttext.buffer);
 588     if (w->def->i[icon].i.flags & wimp_ITEXT &&
 589         w->def->i[icon].i.data.indirecttext.validstring!=(char *)-1)
 590     {
 591       utils_ctermToNterm(w->def->i[icon].i.data.indirecttext.validstring);
 592       w->size-=strlen(w->def->i[icon].i.data.indirecttext.validstring)+1;
 593       indir_free(w->def->i[icon].i.data.indirecttext.validstring);
 594     }
 595   }
 596
 597   w->def->i[icon].i.flags=wimp_IDELETED; /* This is a late icon            */
 598   w->def->i[icon].selected=FALSE;
 599
 600   if (gPrefs_current()->mDeleteRenum)
 601     window_renumber(w,icon,w->def->desc.w.nicons-1);
 602   tfile_markAsAltered(w->t);
 603   window__removeTrailingDeleted(w);
 604 }
 605
 606 /*
 607  * void window_renumber(glass_windPointer *w,int icon,int new)
 608  *
 609  * Use
 610  *  Renumbers an icon, by removing it from the array, shuffling others out
 611  *  the way, and the putting it in its new position (i.e. it's an insert
 612  *  renumber, not a swap renumber like the old version - which wasn't
 613  *  terribly useful...)
 614  *
 615  * Parameters
 616  *  glass_windPointer *w == the window containing the icon
 617  *  int icon == the icon to renumber
 618  *  int new == the new number to give it
 619  *
 620  * Returns
 621  *  TRUE if successful
 622  */
 623
 624 BOOL window_renumber(glass_windPointer *w,int icon,int new)
 625 {
 626   glass_iconDescription idef=w->def->i[icon];
 627   int i;
 628   int si=window__selectedIcon();
 629
 630   if (new<0 || new>=w->def->desc.w.nicons)
 631   {
 632     note(msgs_lookup("wdIIRN"));
 633     return (FALSE);
 634   }
 635   if (new==icon)
 636     return (TRUE);
 637   editIcon_renumber(w,icon,new);
 638
 639   if (new<icon)
 640   {
 641     if (w==window_selectionOwner() && si!=-1)
 642     {
 643       if (si==icon)
 644         window__renumberSelectedIcon(new);
 645       else if (si>=new && si<icon)
 646         window__renumberSelectedIcon(si+1);
 647     }
 648     for (i=icon;i>new;i--)
 649     {
 650       editIcon_renumber(w,i-1,i);
 651       w->def->i[i]=w->def->i[i-1];
 652     }
 653   }
 654   else
 655   {
 656     if (w==window_selectionOwner() && si!=-1)
 657     {
 658       if (si==icon)
 659         window__renumberSelectedIcon(new);
 660       else if (si<=new && si>icon)
 661         window__renumberSelectedIcon(si-1);
 662     }
 663     for (i=icon;i<new;i++)
 664     {
 665       editIcon_renumber(w,i+1,i);
 666       w->def->i[i]=w->def->i[i+1];
 667     }
 668   }
 669   w->def->i[new]=idef;
 670   window_redrawIcon(w,new);
 671   return (TRUE);
 672 }