WINGs/wtabview.c

   1
   2 #include "WINGsP.h"
   3
   4
   5 typedef struct W_TabView {
   6     W_Class widgetClass;
   7     W_View *view;
   8
   9     struct W_TabViewItem **items;
  10     int itemCount;
  11     int maxItems;              /* size of items array, can be increased */
  12
  13     int selectedItem;
  14     int firstVisible;
  15
  16     int visibleTabs;
  17
  18     WMFont *font;
  19
  20     WMColor *lightGray;
  21     WMColor *tabColor;
  22
  23     WMTabViewDelegate *delegate;
  24
  25     short tabHeight;
  26
  27     struct {
  28         WMReliefType relief:4;
  29         WMTitlePosition titlePosition:4;
  30         WMTabViewType type:2;
  31
  32         unsigned enabled:1;
  33         unsigned tabbed:1;
  34         unsigned dontFitAll:1;
  35         unsigned bordered:1;
  36         unsigned uniformTabs:1;
  37     } flags;
  38 } TabView;
  39
  40
  41 typedef struct W_TabViewItem {
  42     WMTabView *tabView;
  43
  44     W_View *view;
  45
  46     char *label;
  47
  48     short tabWidth;
  49     int identifier;
  50
  51     struct {
  52         unsigned visible:1;
  53         unsigned enabled:1;
  54     } flags;
  55 } W_TabViewItem;
  56
  57
  58
  59
  60
  61
  62 #define DEFAULT_WIDTH   40
  63 #define DEFAULT_HEIGHT  40
  64
  65 #define NORMAL_SIDE_OFFSET 8
  66 #define BUTTONED_SIDE_OFFSET 15
  67
  68
  69 static void destroyTabView(TabView *tPtr);
  70 static void paintTabView(TabView *tPtr);
  71
  72
  73 static void W_SetTabViewItemParent(WMTabViewItem *item, WMTabView *parent);
  74
  75 static void W_DrawLabel(WMTabViewItem *item, Drawable d, WMRect rect,
  76                         Bool enabled);
  77
  78 static void W_UnmapTabViewItem(WMTabViewItem *item);
  79
  80 static void W_MapTabViewItem(WMTabViewItem *item);
  81
  82 static WMView *W_TabViewItemView(WMTabViewItem *item);
  83
  84 static int W_TabViewItemTabWidth(WMTabViewItem *item);
  85
  86 static void W_SetTabViewItemTabWidth(WMTabViewItem *item, int width);
  87
  88
  89 static void recalcTabWidth(TabView *tPtr);
  90 static void rearrange(TabView *tPtr);
  91
  92 static void didResize(struct W_ViewDelegate*, WMView*);
  93
  94 static W_ViewDelegate delegate = {
  95     NULL,
  96         NULL,
  97         didResize,
  98         NULL,
  99         NULL
 100 };
 101
 102
 103 static int
 104 positionOfTab(WMTabView *tabView, int tab)
 105 {
 106     int i;
 107     int offs;
 108
 109     if (tab < tabView->firstVisible)
 110         return -1;
 111
 112     if (tab > tabView->firstVisible + tabView->visibleTabs)
 113         return -1;
 114
 115     if (tabView->flags.dontFitAll)
 116         offs = BUTTONED_SIDE_OFFSET;
 117     else
 118         offs = NORMAL_SIDE_OFFSET;
 119
 120     for (i = tabView->firstVisible; i < tab; i++)
 121         offs += W_TabViewItemTabWidth(tabView->items[i]) - 10;
 122
 123     return offs;
 124 }
 125
 126
 127 static int
 128 countVisibleTabs(TabView *tPtr, int first)
 129 {
 130     int i;
 131     int width;
 132
 133     if (first < 0) {
 134         width = W_VIEW_WIDTH(tPtr->view) - 2 * NORMAL_SIDE_OFFSET;
 135         first = 0;
 136     } else {
 137         width = W_VIEW_WIDTH(tPtr->view) - 2 * BUTTONED_SIDE_OFFSET;
 138     }
 139
 140     for (i = first; i < tPtr->itemCount; i++) {
 141         width -= W_TabViewItemTabWidth(tPtr->items[i]) - 10;
 142         if (width <= 0) {
 143             return i - first;
 144         }
 145     }
 146     return i - first;
 147 }
 148
 149
 150
 151 static void
 152 handleEvents(XEvent *event, void *data)
 153 {
 154     TabView *tPtr = (TabView*)data;
 155
 156     CHECK_CLASS(data, WC_TabView);
 157
 158     switch (event->type) {
 159      case Expose:
 160         if (event->xexpose.count!=0)
 161             break;
 162         paintTabView(tPtr);
 163         break;
 164
 165      case ButtonPress:
 166         if (tPtr->flags.enabled) {
 167             WMTabViewItem *item = WMTabViewItemAtPoint(tPtr,
 168                                                        event->xbutton.x,
 169                                                        event->xbutton.y);
 170             /*if (item && !item->flags.enabled)
 171                 break;*/
 172
 173             if (item && item->flags.enabled) {
 174                 WMSelectTabViewItem(tPtr, item);
 175             } else if (tPtr->flags.dontFitAll) {
 176                 int redraw = 0;
 177                 int lastVisible = tPtr->firstVisible+tPtr->visibleTabs-1;
 178
 179                 if (event->xbutton.x < BUTTONED_SIDE_OFFSET) {
 180                     if (tPtr->firstVisible > 0) {
 181                         redraw = 1;
 182                         tPtr->firstVisible--;
 183                     }
 184                 } else if (event->xbutton.x > positionOfTab(tPtr,lastVisible)){
 185
 186                     if (lastVisible < tPtr->itemCount-1) {
 187                         redraw = 1;
 188                         tPtr->firstVisible++;
 189                     }
 190                 }
 191                 tPtr->visibleTabs = countVisibleTabs(tPtr, tPtr->firstVisible);
 192                 if (redraw) {
 193                     paintTabView(tPtr);
 194                 }
 195             }
 196         }
 197         break;
 198
 199      case DestroyNotify:
 200         destroyTabView(tPtr);
 201         break;
 202     }
 203 }
 204
 205
 206
 207 WMTabView*
 208 WMCreateTabView(WMWidget *parent)
 209 {
 210     TabView *tPtr;
 211     WMScreen *scr = WMWidgetScreen(parent);
 212
 213     tPtr = wmalloc(sizeof(TabView));
 214     memset(tPtr, 0, sizeof(TabView));
 215
 216     tPtr->widgetClass = WC_TabView;
 217
 218     tPtr->view = W_CreateView(W_VIEW(parent));
 219     if (!tPtr->view) {
 220         wfree(tPtr);
 221         return NULL;
 222     }
 223     tPtr->view->self = tPtr;
 224     tPtr->view->delegate = &delegate;
 225
 226     tPtr->lightGray = WMCreateRGBColor(scr, 0xd9d9, 0xd9d9, 0xd9d9, False);
 227     tPtr->tabColor = WMCreateRGBColor(scr, 0x8420, 0x8420, 0x8420, False);
 228
 229     tPtr->font = WMRetainFont(scr->normalFont);
 230
 231     tPtr->flags.type = WTTopTabsBevelBorder;
 232     tPtr->flags.bordered = 1;
 233     tPtr->flags.uniformTabs = 0;
 234     tPtr->flags.enabled = 1;
 235
 236     WMCreateEventHandler(tPtr->view, ExposureMask|StructureNotifyMask
 237                          |ButtonPressMask, handleEvents, tPtr);
 238
 239     WMResizeWidget(tPtr, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 240
 241     tPtr->tabHeight = WMFontHeight(tPtr->font) + 3;
 242
 243     return tPtr;
 244 }
 245
 246
 247 void
 248 WMSetTabViewDelegate(WMTabView *tPtr, WMTabViewDelegate *delegate)
 249 {
 250     tPtr->delegate = delegate;
 251 }
 252
 253
 254 WMTabViewItem*
 255 WMAddTabViewItemWithView(WMTabView *tPtr, WMView *view, int identifier,
 256                          char *label)
 257 {
 258     WMTabViewItem *item;
 259
 260     item = WMCreateTabViewItemWithIdentifier(identifier);
 261     WMSetTabViewItemView(item, view);
 262     WMAddItemInTabView(tPtr, item);
 263     WMSetTabViewItemLabel(item, label);
 264
 265     return item;
 266 }
 267
 268
 269 void
 270 WMAddItemInTabView(WMTabView *tPtr, WMTabViewItem *item)
 271 {
 272     WMInsertItemInTabView(tPtr, tPtr->itemCount, item);
 273 }
 274
 275
 276 void
 277 WMSetTabViewEnabled(WMTabView *tPtr, Bool flag)
 278 {
 279     tPtr->flags.enabled = ((flag==0) ? 0 : 1);
 280     if (W_VIEW_REALIZED(tPtr->view))
 281         paintTabView(tPtr);
 282 }
 283
 284
 285 void
 286 WMInsertItemInTabView(WMTabView *tPtr, int index, WMTabViewItem *item)
 287 {
 288     wassertr(W_TabViewItemView(item) != NULL);
 289
 290     if (tPtr->maxItems == tPtr->itemCount) {
 291         WMTabViewItem **items;
 292
 293         items = wrealloc(tPtr->items,
 294                          sizeof(WMTabViewItem*) * (tPtr->maxItems + 10));
 295         memset(&items[tPtr->maxItems], 0, sizeof(WMTabViewItem*) * 10);
 296         tPtr->items = items;
 297         tPtr->maxItems += 10;
 298     }
 299
 300     if (index > tPtr->itemCount)
 301         index = tPtr->itemCount;
 302
 303     if (index == 0 && tPtr->items[0]) {
 304         W_UnmapTabViewItem(tPtr->items[0]);
 305     }
 306
 307     if (index < tPtr->itemCount) {
 308         memmove(tPtr->items + index + 1, tPtr->items + index,
 309                 (tPtr->itemCount - index) * sizeof(WMTabViewItem*));
 310     }
 311
 312     tPtr->items[index] = item;
 313
 314     tPtr->itemCount++;
 315
 316     recalcTabWidth(tPtr);
 317
 318     W_SetTabViewItemParent(item, tPtr);
 319
 320     W_UnmapTabViewItem(item);
 321
 322     if (tPtr->flags.bordered) {
 323         W_ReparentView(W_TabViewItemView(item), tPtr->view, 1,
 324                        tPtr->tabHeight + 1);
 325
 326         W_ResizeView(W_TabViewItemView(item), tPtr->view->size.width - 3,
 327                      tPtr->view->size.height - tPtr->tabHeight - 3);
 328     } else {
 329         W_ReparentView(W_TabViewItemView(item), tPtr->view, 0,
 330                        tPtr->tabHeight);
 331
 332         W_ResizeView(W_TabViewItemView(item), tPtr->view->size.width,
 333                      tPtr->view->size.height - tPtr->tabHeight);
 334     }
 335
 336     if (index == 0) {
 337         W_MapTabViewItem(item);
 338     }
 339     if (tPtr->delegate && tPtr->delegate->didChangeNumberOfItems)
 340         (*tPtr->delegate->didChangeNumberOfItems)(tPtr->delegate, tPtr);
 341
 342     if (W_VIEW_REALIZED(tPtr->view))
 343         paintTabView(tPtr);
 344 }
 345
 346
 347 void
 348 WMRemoveTabViewItem(WMTabView *tPtr, WMTabViewItem *item)
 349 {
 350     int i;
 351
 352     for (i = 0; i < tPtr->itemCount; i++) {
 353         if (tPtr->items[i] == item) {
 354             if (i < tPtr->itemCount - 1)
 355                 memmove(&tPtr->items[i], &tPtr->items[i + 1],
 356                         tPtr->itemCount - i - 1);
 357             else
 358                 tPtr->items[i] = NULL;
 359
 360             W_SetTabViewItemParent(item, NULL);
 361
 362             tPtr->itemCount--;
 363             break;
 364         }
 365     }
 366     if (tPtr->delegate && tPtr->delegate->didChangeNumberOfItems)
 367         (*tPtr->delegate->didChangeNumberOfItems)(tPtr->delegate, tPtr);
 368 }
 369
 370
 371
 372 static Bool
 373 isInside(int x, int y, int width, int height, int px, int py)
 374 {
 375     if (py >= y + height - 3 && py <= y + height
 376         && px >= x + py - (y + height - 3)
 377         && px <= x + width - (py - (y + height - 3))) {
 378
 379         return True;
 380     }
 381     if (py >= y + 3 && py < y + height - 3
 382         && px >= x + 3 + ((y + 3) - py)*3/7
 383         && px <= x + width - 3 - ((y + 3) - py)*3/7) {
 384
 385         return True;
 386     }
 387     if (py >= y && py < y + 3
 388         && px >= x + 7 + py - y
 389         && px <= x + width - 7 - (py - y)) {
 390
 391         return True;
 392     }
 393     return False;
 394 }
 395
 396
 397 WMTabViewItem*
 398 WMTabViewItemAtPoint(WMTabView *tPtr, int x, int y)
 399 {
 400     int i;
 401     int count = tPtr->visibleTabs;
 402     int first = tPtr->firstVisible;
 403
 404     if (tPtr->flags.dontFitAll) {
 405         i = tPtr->selectedItem - tPtr->firstVisible;
 406         if (i >= 0 && i < tPtr->visibleTabs
 407             && isInside(positionOfTab(tPtr, tPtr->selectedItem), 0,
 408                         W_TabViewItemTabWidth(tPtr->items[tPtr->selectedItem]),
 409                         tPtr->tabHeight, x, y)) {
 410             return tPtr->items[tPtr->selectedItem];
 411         }
 412     } else {
 413         i = tPtr->selectedItem;
 414         if (isInside(positionOfTab(tPtr, i), 0,
 415                      W_TabViewItemTabWidth(tPtr->items[i]),
 416                      tPtr->tabHeight, x, y)) {
 417             return tPtr->items[i];
 418         }
 419     }
 420
 421     for (i = first; i < first + count; i++) {
 422         int pos;
 423
 424         pos = positionOfTab(tPtr, i);
 425         if (isInside(pos, 0, W_TabViewItemTabWidth(tPtr->items[i]),
 426                      tPtr->tabHeight, x, y)) {
 427             return tPtr->items[i];
 428         }
 429     }
 430     return NULL;
 431 }
 432
 433
 434 void
 435 WMSetTabViewType(WMTabView *tPtr, WMTabViewType type)
 436 {
 437     tPtr->flags.type = type;
 438
 439     if (type != WTTopTabsBevelBorder)
 440         tPtr->tabHeight = 0;
 441     else
 442         tPtr->tabHeight = WMFontHeight(tPtr->font) + 3;
 443
 444     if (type == WTNoTabsNoBorder)
 445         tPtr->flags.bordered = 0;
 446     else
 447         tPtr->flags.bordered = 1;
 448
 449     rearrange(tPtr);
 450 }
 451
 452 void
 453 WMSelectFirstTabViewItem(WMTabView *tPtr)
 454 {
 455     WMSelectTabViewItemAtIndex(tPtr, 0);
 456 }
 457
 458
 459 void
 460 WMSelectLastTabViewItem(WMTabView *tPtr)
 461 {
 462     WMSelectTabViewItemAtIndex(tPtr, tPtr->itemCount);
 463 }
 464
 465
 466 void
 467 WMSelectNextTabViewItem(WMTabView *tPtr)
 468 {
 469     WMSelectTabViewItemAtIndex(tPtr, tPtr->selectedItem + 1);
 470 }
 471
 472
 473 void
 474 WMSelectPreviousTabViewItem(WMTabView *tPtr)
 475 {
 476     WMSelectTabViewItemAtIndex(tPtr, tPtr->selectedItem - 1);
 477 }
 478
 479
 480 WMTabViewItem*
 481 WMGetSelectedTabViewItem(WMTabView *tPtr)
 482 {
 483     return tPtr->items[tPtr->selectedItem];
 484 }
 485
 486
 487 void
 488 WMSelectTabViewItem(WMTabView *tPtr, WMTabViewItem *item)
 489 {
 490     int i;
 491
 492     for (i = 0; i < tPtr->itemCount; i++) {
 493         if (tPtr->items[i] == item) {
 494             WMSelectTabViewItemAtIndex(tPtr, i);
 495             break;
 496         }
 497     }
 498 }
 499
 500
 501 void
 502 WMSelectTabViewItemAtIndex(WMTabView *tPtr, int index)
 503 {
 504     WMTabViewItem *item;
 505
 506     if (index == tPtr->selectedItem) {
 507         return;
 508     }
 509
 510     if (index < 0)
 511         index = 0;
 512     else if (index >= tPtr->itemCount)
 513         index = tPtr->itemCount - 1;
 514
 515     item = tPtr->items[tPtr->selectedItem];
 516
 517     if (tPtr->delegate && tPtr->delegate->shouldSelectItem)
 518         if (!(*tPtr->delegate->shouldSelectItem)(tPtr->delegate, tPtr,
 519                                                  tPtr->items[index]))
 520             return;
 521
 522     if (tPtr->delegate && tPtr->delegate->willSelectItem)
 523         (*tPtr->delegate->willSelectItem)(tPtr->delegate, tPtr,
 524                                           tPtr->items[index]);
 525
 526     W_UnmapTabViewItem(item);
 527
 528
 529     item = tPtr->items[index];
 530
 531     W_MapTabViewItem(item);
 532
 533     tPtr->selectedItem = index;
 534
 535     if (tPtr->delegate && tPtr->delegate->didSelectItem)
 536         (*tPtr->delegate->didSelectItem)(tPtr->delegate, tPtr,
 537                                          tPtr->items[index]);
 538
 539     paintTabView(tPtr);
 540 }
 541
 542
 543
 544 static void
 545 recalcTabWidth(TabView *tPtr)
 546 {
 547     int i;
 548     /*int twidth = W_VIEW(tPtr)->size.width;*/
 549     int width;
 550
 551     if (tPtr->flags.uniformTabs) {
 552         int tabWidth;
 553
 554         tabWidth = 0;
 555
 556         for (i = 0; i < tPtr->itemCount; i++) {
 557             char *str = WMGetTabViewItemLabel(tPtr->items[i]);
 558
 559             if (str) {
 560                 width = WMWidthOfString(tPtr->font, str, strlen(str));
 561                 if (width > tabWidth)
 562                     tabWidth = width;
 563             }
 564         }
 565
 566         tabWidth = tabWidth + 30;
 567
 568         for (i = 0; i < tPtr->itemCount; i++)
 569             W_SetTabViewItemTabWidth(tPtr->items[i], tabWidth);
 570
 571         tPtr->firstVisible = 0;
 572         tPtr->visibleTabs = countVisibleTabs(tPtr, -1);
 573         if (tPtr->visibleTabs < tPtr->itemCount)
 574             tPtr->flags.dontFitAll = 1;
 575         else
 576             tPtr->flags.dontFitAll = 0;
 577     } else {
 578         for (i = 0; i < tPtr->itemCount; i++) {
 579             char *str = WMGetTabViewItemLabel(tPtr->items[i]);
 580             if (!str)
 581                 continue;
 582
 583             width = WMWidthOfString(tPtr->font, str, strlen(str)) + 30;
 584
 585             W_SetTabViewItemTabWidth(tPtr->items[i], width);
 586         }
 587
 588         if (countVisibleTabs(tPtr, -1) < tPtr->itemCount) {
 589             tPtr->flags.dontFitAll = 1;
 590             tPtr->firstVisible = 0;
 591             tPtr->visibleTabs = countVisibleTabs(tPtr, tPtr->firstVisible);
 592         } else {
 593             tPtr->flags.dontFitAll = 0;
 594             tPtr->firstVisible = 0;
 595             tPtr->visibleTabs = tPtr->itemCount;
 596         }
 597     }
 598 }
 599
 600
 601 static void
 602 drawRelief(W_Screen *scr, Drawable d, int x, int y, unsigned int width,
 603            unsigned int height)
 604 {
 605     Display *dpy = scr->display;
 606     GC bgc = WMColorGC(scr->black);
 607     GC wgc = WMColorGC(scr->white);
 608     GC dgc = WMColorGC(scr->darkGray);
 609
 610     XDrawLine(dpy, d, wgc, x, y, x, y+height-1);
 611
 612     XDrawLine(dpy, d, bgc, x, y+height-1, x+width-1, y+height-1);
 613     XDrawLine(dpy, d, dgc, x+1, y+height-2, x+width-2, y+height-2);
 614
 615     XDrawLine(dpy, d, bgc, x+width-1, y, x+width-1, y+height-1);
 616     XDrawLine(dpy, d, dgc, x+width-2, y+1, x+width-2, y+height-2);
 617 }
 618
 619
 620 static void
 621 drawTab(TabView *tPtr, Drawable d, int x, int y,
 622         unsigned width, unsigned height, Bool selected)
 623 {
 624     WMScreen *scr = W_VIEW(tPtr)->screen;
 625     Display *dpy = scr->display;
 626     GC white = WMColorGC(selected ? scr->white : tPtr->lightGray);
 627     GC black = WMColorGC(scr->black);
 628     GC dark = WMColorGC(scr->darkGray);
 629     GC light = WMColorGC(scr->gray);
 630     XPoint trap[8];
 631
 632     trap[0].x = x + (selected ? 0 : 1);
 633     trap[0].y = y + height - (selected ? 0 : 1);
 634
 635     trap[1].x = x + 3;
 636     trap[1].y = y + height - 3;
 637
 638     trap[2].x = x + 10 - 3;
 639     trap[2].y = y + 3;
 640
 641     trap[3].x = x + 10;
 642     trap[3].y = y;
 643
 644     trap[4].x = x + width - 10;
 645     trap[4].y = y;
 646
 647     trap[5].x = x + width - 10 + 3;
 648     trap[5].y = y + 3;
 649
 650     trap[6].x = x + width - 3;
 651     trap[6].y = y + height - 3;
 652
 653     trap[7].x = x + width - (selected ? 0 : 1);
 654     trap[7].y = y + height - (selected ? 0 : 1);
 655
 656     XFillPolygon(dpy, d, selected ? light : WMColorGC(tPtr->tabColor), trap, 8,
 657                  Convex, CoordModeOrigin);
 658
 659     XDrawLine(dpy, d, white, trap[0].x, trap[0].y, trap[1].x, trap[1].y);
 660     XDrawLine(dpy, d, white, trap[1].x, trap[1].y, trap[2].x, trap[2].y);
 661     XDrawLine(dpy, d, white, trap[2].x, trap[2].y, trap[3].x, trap[3].y);
 662     XDrawLine(dpy, d, white, trap[3].x, trap[3].y, trap[4].x, trap[4].y);
 663     XDrawLine(dpy, d, dark, trap[4].x, trap[4].y, trap[5].x, trap[5].y);
 664     XDrawLine(dpy, d, black, trap[5].x, trap[5].y, trap[6].x, trap[6].y);
 665     XDrawLine(dpy, d, black, trap[6].x, trap[6].y, trap[7].x, trap[7].y);
 666
 667     XDrawLine(dpy, d, selected ? light : WMColorGC(scr->white),
 668               trap[0].x, trap[0].y, trap[7].x, trap[7].y);
 669 }
 670
 671
 672 static void
 673 paintDot(TabView *tPtr, Drawable d, int x, int y)
 674 {
 675     WMScreen *scr = W_VIEW(tPtr)->screen;
 676     Display *dpy = scr->display;
 677     GC white = WMColorGC(scr->white);
 678     GC black = WMColorGC(scr->black);
 679
 680     XFillRectangle(dpy, d, black, x, y, 2, 2);
 681     XDrawPoint(dpy, d, white, x, y);
 682 }
 683
 684
 685
 686 static void
 687 paintTabView(TabView *tPtr)
 688 {
 689     Pixmap buffer;
 690     WMScreen *scr = W_VIEW(tPtr)->screen;
 691     Display *dpy = scr->display;
 692     GC white = WMColorGC(scr->white);
 693     int i;
 694
 695     if (tPtr->flags.type == WTTopTabsBevelBorder) {
 696         int count = tPtr->visibleTabs;
 697         int first = tPtr->firstVisible;
 698         int moreAtLeft;
 699         int moreAtRight;
 700         int selectedIsVisible;
 701         int ty;
 702         int twidth, theight;
 703
 704         ty = 2;
 705         theight = tPtr->tabHeight;
 706
 707         buffer = XCreatePixmap(dpy, W_VIEW(tPtr)->window,
 708                                W_VIEW(tPtr)->size.width, theight,
 709                                W_VIEW(tPtr)->screen->depth);
 710
 711         XFillRectangle(dpy, buffer, WMColorGC(W_VIEW(tPtr)->backColor),
 712                        0, 0, W_VIEW(tPtr)->size.width, tPtr->tabHeight);
 713
 714         if (tPtr->flags.dontFitAll) {
 715             moreAtLeft = first > 0;
 716             moreAtRight = (first + count) < tPtr->itemCount;
 717             if (tPtr->selectedItem >= first
 718                 && tPtr->selectedItem < first + count)
 719                 selectedIsVisible = 1;
 720             else
 721                 selectedIsVisible = 0;
 722         } else {
 723             moreAtLeft = 0;
 724             moreAtRight = 0;
 725             selectedIsVisible = 1;
 726         }
 727
 728         if (moreAtRight) {
 729             drawTab(tPtr, buffer, positionOfTab(tPtr, first+count), 0,
 730                     W_VIEW_WIDTH(tPtr->view), theight, False);
 731         }
 732         for (i = first + count-1; i >= first; i--) {
 733             if (!selectedIsVisible || i != tPtr->selectedItem) {
 734                 twidth = W_TabViewItemTabWidth(tPtr->items[i]);
 735
 736                 drawTab(tPtr, buffer, positionOfTab(tPtr, i), 0,
 737                         twidth, theight, False);
 738             }
 739         }
 740         if (moreAtLeft) {
 741             drawTab(tPtr, buffer, positionOfTab(tPtr, 0)-2*BUTTONED_SIDE_OFFSET,
 742                     0, BUTTONED_SIDE_OFFSET*4, theight, False);
 743         }
 744
 745         if (selectedIsVisible) {
 746             int idx = tPtr->selectedItem;
 747
 748             drawTab(tPtr, buffer, positionOfTab(tPtr, idx),
 749                     0, W_TabViewItemTabWidth(tPtr->items[idx]),
 750                     theight, True);
 751
 752             XDrawLine(dpy, buffer, white, 0, theight - 1,
 753                       positionOfTab(tPtr, idx), theight - 1);
 754
 755             XDrawLine(dpy, buffer, white,
 756                       positionOfTab(tPtr, idx) + W_TabViewItemTabWidth(tPtr->items[idx]),
 757                       tPtr->tabHeight - 1, W_VIEW_WIDTH(tPtr->view) - 1,
 758                       tPtr->tabHeight - 1);
 759         } else {
 760             XDrawLine(dpy, buffer, white, 0, theight - 1,
 761                       W_VIEW_WIDTH(tPtr->view), theight - 1);
 762         }
 763
 764         for (i = 0; i < count; i++) {
 765             WMRect rect;
 766
 767             rect.pos.x = 15 + positionOfTab(tPtr, first+i);
 768             rect.pos.y = ty;
 769             rect.size.width = W_TabViewItemTabWidth(tPtr->items[first+i]);
 770             rect.size.height = theight;
 771             W_DrawLabel(tPtr->items[first+i], buffer, rect,
 772                         tPtr->flags.enabled &&
 773                         tPtr->items[first+i]->flags.enabled);
 774         }
 775
 776         if (moreAtLeft) {
 777             paintDot(tPtr, buffer, 4, 10);
 778             paintDot(tPtr, buffer, 7, 10);
 779             paintDot(tPtr, buffer, 10, 10);
 780         }
 781         if (moreAtRight) {
 782             int x;
 783
 784             x = positionOfTab(tPtr, tPtr->firstVisible + tPtr->visibleTabs);
 785
 786             x = x + (W_VIEW_WIDTH(tPtr->view) - x)/2;
 787             paintDot(tPtr, buffer, x + 5, 10);
 788             paintDot(tPtr, buffer, x + 8, 10);
 789             paintDot(tPtr, buffer, x + 11, 10);
 790         }
 791
 792         XCopyArea(dpy, buffer, W_VIEW(tPtr)->window, scr->copyGC, 0, 0,
 793                   W_VIEW_WIDTH(tPtr->view), theight, 0, 0);
 794
 795         XFreePixmap(dpy, buffer);
 796     }
 797     switch (tPtr->flags.type) {
 798      case WTTopTabsBevelBorder:
 799         drawRelief(scr, W_VIEW(tPtr)->window, 0, tPtr->tabHeight - 1,
 800                    W_VIEW(tPtr)->size.width,
 801                    W_VIEW(tPtr)->size.height - tPtr->tabHeight + 1);
 802         break;
 803
 804      case WTNoTabsBevelBorder:
 805         W_DrawRelief(scr, W_VIEW(tPtr)->window, 0, 0, W_VIEW(tPtr)->size.width,
 806                      W_VIEW(tPtr)->size.height, WRRaised);
 807         break;
 808
 809      case WTNoTabsLineBorder:
 810         W_DrawRelief(scr, W_VIEW(tPtr)->window, 0, 0, W_VIEW(tPtr)->size.width,
 811                      W_VIEW(tPtr)->size.height, WRSimple);
 812         break;
 813
 814      case WTNoTabsNoBorder:
 815         break;
 816     }
 817 }
 818
 819
 820 static void
 821 rearrange(TabView *tPtr)
 822 {
 823     int i;
 824     int width, height;
 825     int bordered = tPtr->flags.bordered;
 826
 827     recalcTabWidth(tPtr);
 828
 829     width = tPtr->view->size.width - (bordered ? 3 : 0);
 830     height = tPtr->view->size.height - tPtr->tabHeight - (bordered ? 3 : 0);
 831
 832     for (i = 0; i < tPtr->itemCount; i++) {
 833         W_MoveView(W_TabViewItemView(tPtr->items[i]),
 834                    1*bordered, tPtr->tabHeight + 1*bordered);
 835         W_ResizeView(W_TabViewItemView(tPtr->items[i]), width, height);
 836     }
 837     if (W_VIEW_MAPPED(tPtr->view) && W_VIEW_REALIZED(tPtr->view))
 838         paintTabView(tPtr);
 839 }
 840
 841
 842 static void
 843 didResize(struct W_ViewDelegate *deleg, WMView *view)
 844 {
 845     rearrange(view->self);
 846 }
 847
 848
 849 static void
 850 destroyTabView(TabView *tPtr)
 851 {
 852     int i;
 853
 854     for (i = 0; i < tPtr->itemCount; i++) {
 855         WMSetTabViewItemView(tPtr->items[i], NULL);
 856         WMDestroyTabViewItem(tPtr->items[i]);
 857     }
 858     wfree(tPtr->items);
 859
 860     WMReleaseColor(tPtr->lightGray);
 861     WMReleaseColor(tPtr->tabColor);
 862     WMReleaseFont(tPtr->font);
 863
 864     wfree(tPtr);
 865 }
 866
 867 /******************************************************************/
 868
 869
 870 static void
 871 W_SetTabViewItemParent(WMTabViewItem *item, WMTabView *parent)
 872 {
 873     item->tabView = parent;
 874 }
 875
 876
 877 static void
 878 W_DrawLabel(WMTabViewItem *item, Drawable d, WMRect rect, Bool enabled)
 879 {
 880     WMScreen *scr = W_VIEW(item->tabView)->screen;
 881
 882     if (!item->label)
 883         return;
 884
 885     WMDrawString(scr, d, WMColorGC(enabled ? scr->black : scr->darkGray),
 886                  item->tabView->font, rect.pos.x, rect.pos.y,
 887                  item->label, strlen(item->label));
 888 }
 889
 890
 891 static void
 892 W_UnmapTabViewItem(WMTabViewItem *item)
 893 {
 894     wassertr(item->view);
 895
 896     W_UnmapView(item->view);
 897
 898     item->flags.visible = 0;
 899 }
 900
 901
 902 static void
 903 W_MapTabViewItem(WMTabViewItem *item)
 904 {
 905     wassertr(item->view);
 906
 907     W_MapView(item->view);
 908     W_RaiseView(item->view);
 909
 910     item->flags.visible = 1;
 911 }
 912
 913
 914 static WMView*
 915 W_TabViewItemView(WMTabViewItem *item)
 916 {
 917     return item->view;
 918 }
 919
 920
 921 static int
 922 W_TabViewItemTabWidth(WMTabViewItem *item)
 923 {
 924     return item->tabWidth;
 925 }
 926
 927
 928 static void
 929 W_SetTabViewItemTabWidth(WMTabViewItem *item, int width)
 930 {
 931     item->tabWidth = width;
 932 }
 933
 934
 935 WMTabViewItem*
 936 WMCreateTabViewItemWithIdentifier(int identifier)
 937 {
 938     WMTabViewItem *item;
 939
 940     item = wmalloc(sizeof(WMTabViewItem));
 941     memset(item, 0, sizeof(WMTabViewItem));
 942
 943     item->identifier = identifier;
 944
 945     item->flags.enabled = 1;
 946
 947     return item;
 948 }
 949
 950
 951 WMTabViewItem*
 952 WMCreateTabViewItem(int identifier, char *label)
 953 {
 954     WMTabViewItem *item;
 955
 956     item = wmalloc(sizeof(WMTabViewItem));
 957     memset(item, 0, sizeof(WMTabViewItem));
 958
 959     item->identifier = identifier;
 960
 961     item->flags.enabled = 1;
 962
 963     WMSetTabViewItemLabel(item, label);
 964
 965     return item;
 966 }
 967
 968
 969 void
 970 WMSetTabViewItemEnabled(WMTabViewItem *tPtr, Bool flag)
 971 {
 972     tPtr->flags.enabled = ((flag==0) ? 0 : 1);
 973     if (tPtr->tabView && W_VIEW_REALIZED(tPtr->tabView->view))
 974         paintTabView(tPtr->tabView);
 975 }
 976
 977
 978 int
 979 WMGetTabViewItemIdentifier(WMTabViewItem *item)
 980 {
 981     return item->identifier;
 982 }
 983
 984
 985 void
 986 WMSetTabViewFont(WMTabView *tPtr, WMFont *font)
 987 {
 988     if (tPtr->font)
 989         WMReleaseFont(tPtr->font);
 990
 991     tPtr->font = WMRetainFont(font);
 992     tPtr->tabHeight = WMFontHeight(tPtr->font) + 3;
 993     recalcTabWidth(tPtr);
 994 }
 995
 996
 997 void
 998 WMSetTabViewItemLabel(WMTabViewItem *item, char *label)
 999 {
1000     if (item->label)
1001         wfree(item->label);
1002
1003     if (label)
1004         item->label = wstrdup(label);
1005     else
1006         item->label = NULL;
1007
1008     if (item->tabView)
1009         recalcTabWidth(item->tabView);
1010 }
1011
1012
1013 char*
1014 WMGetTabViewItemLabel(WMTabViewItem *item)
1015 {
1016     return item->label;
1017 }
1018
1019
1020 void
1021 WMSetTabViewItemView(WMTabViewItem *item, WMView *view)
1022 {
1023     item->view = view;
1024 }
1025
1026
1027 WMView*
1028 WMGetTabViewItemView(WMTabViewItem *item)
1029 {
1030     return item->view;
1031 }
1032
1033
1034 void
1035 WMDestroyTabViewItem(WMTabViewItem *item)
1036 {
1037     if (item->label)
1038         wfree(item->label);
1039
1040     if (item->view)
1041         W_DestroyView(item->view);
1042
1043     wfree(item);
1044 }