src/switchpanel.c

   1 /*
   2  *  Window Maker window manager
   3  *
   4  *  Copyright (c) 1997-2004 Alfredo K. Kojima
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License along
  17  *  with this program; if not, write to the Free Software Foundation, Inc.,
  18  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "wconfig.h"
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <sys/time.h>
  26
  27 #include "WindowMaker.h"
  28 #include "screen.h"
  29 #include "framewin.h"
  30 #include "icon.h"
  31 #include "window.h"
  32 #include "defaults.h"
  33 #include "switchpanel.h"
  34 #include "funcs.h"
  35 #include "xinerama.h"
  36
  37 extern Atom _XA_WM_IGNORE_FOCUS_EVENTS;
  38
  39 #ifdef SHAPE
  40 #include <X11/extensions/shape.h>
  41
  42 extern Bool wShapeSupported;
  43 #endif
  44
  45 struct SwitchPanel {
  46         WScreen *scr;
  47         WMWindow *win;
  48         WMFrame *iconBox;
  49
  50         WMArray *icons;
  51         WMArray *images;
  52         WMArray *windows;
  53         RImage *bg;
  54         int current;
  55         int firstVisible;
  56         int visibleCount;
  57
  58         WMLabel *label;
  59
  60         RImage *tileTmp;
  61         RImage *tile;
  62
  63         WMFont *font;
  64         WMColor *white;
  65 };
  66
  67 extern WPreferences wPreferences;
  68
  69 #define BORDER_SPACE 10
  70 #define ICON_SIZE 48
  71 #define ICON_TILE_SIZE 64
  72 #define LABEL_HEIGHT 25
  73 #define SCREEN_BORDER_SPACING 2*20
  74 #define SCROLL_STEPS (ICON_TILE_SIZE/2)
  75
  76 static int canReceiveFocus(WWindow *wwin)
  77 {
  78         if (wwin->frame->workspace != wwin->screen_ptr->current_workspace)
  79                 return 0;
  80
  81         if (wPreferences.cycle_active_head_only &&
  82             wGetHeadForWindow(wwin) != wGetHeadForPointerLocation(wwin->screen_ptr))
  83                 return 0;
  84
  85         if (WFLAGP(wwin, no_focusable))
  86                 return 0;
  87
  88         if (!wwin->flags.mapped) {
  89                 if (!wwin->flags.shaded && !wwin->flags.miniaturized && !wwin->flags.hidden)
  90                         return 0;
  91                 else
  92                         return -1;
  93         }
  94
  95         return 1;
  96 }
  97
  98 static void changeImage(WSwitchPanel *panel, int idecks, int selected)
  99 {
 100         WMFrame *icon = WMGetFromArray(panel->icons, idecks);
 101         RImage *image = WMGetFromArray(panel->images, idecks);
 102
 103         if (!panel->bg && !panel->tile && !selected)
 104                 WMSetFrameRelief(icon, WRFlat);
 105
 106         if (image && icon) {
 107                 RImage *back;
 108                 int opaq = 255;
 109                 RImage *tile;
 110                 WMPoint pos;
 111                 Pixmap p;
 112
 113                 if (canReceiveFocus(WMGetFromArray(panel->windows, idecks)) < 0)
 114                         opaq = 50;
 115
 116                 pos = WMGetViewPosition(WMWidgetView(icon));
 117                 back = panel->tileTmp;
 118                 if (panel->bg) {
 119                         RCopyArea(back, panel->bg,
 120                                   BORDER_SPACE + pos.x - panel->firstVisible * ICON_TILE_SIZE,
 121                                   BORDER_SPACE + pos.y, back->width, back->height, 0, 0);
 122                 } else {
 123                         RColor color;
 124                         WMScreen *wscr = WMWidgetScreen(icon);
 125                         color.red = 255;
 126                         color.red = WMRedComponentOfColor(WMGrayColor(wscr)) >> 8;
 127                         color.green = WMGreenComponentOfColor(WMGrayColor(wscr)) >> 8;
 128                         color.blue = WMBlueComponentOfColor(WMGrayColor(wscr)) >> 8;
 129                         RFillImage(back, &color);
 130                 }
 131
 132                 if (selected) {
 133                         tile = panel->tile;
 134                         RCombineArea(back, tile, 0, 0, tile->width, tile->height,
 135                                      (back->width - tile->width) / 2, (back->height - tile->height) / 2);
 136                 }
 137
 138                 RCombineAreaWithOpaqueness(back, image, 0, 0, image->width, image->height,
 139                                            (back->width - image->width) / 2, (back->height - image->height) / 2,
 140                                            opaq);
 141
 142                 RConvertImage(panel->scr->rcontext, back, &p);
 143                 XSetWindowBackgroundPixmap(dpy, WMWidgetXID(icon), p);
 144                 XClearWindow(dpy, WMWidgetXID(icon));
 145                 XFreePixmap(dpy, p);
 146         }
 147
 148         if (!panel->bg && !panel->tile && selected)
 149                 WMSetFrameRelief(icon, WRSimple);
 150 }
 151
 152 static void addIconForWindow(WSwitchPanel *panel, WMWidget *parent, WWindow *wwin, int x, int y)
 153 {
 154         WMFrame *icon = WMCreateFrame(parent);
 155         RImage *image = NULL;
 156
 157         WMSetFrameRelief(icon, WRFlat);
 158         WMResizeWidget(icon, ICON_TILE_SIZE, ICON_TILE_SIZE);
 159         WMMoveWidget(icon, x, y);
 160
 161         if (!WFLAGP(wwin, always_user_icon) && wwin->net_icon_image)
 162                 image = RRetainImage(wwin->net_icon_image);
 163
 164         /* get_icon_image() includes the default icon image */
 165         if (!image)
 166                 image = get_icon_image(panel->scr, wwin->wm_instance, wwin->wm_class, ICON_TILE_SIZE);
 167
 168         /* We must resize the icon size (~64) to the switchpanel icon size (~48) */
 169         image = wIconValidateIconSize(image, ICON_SIZE);
 170
 171         WMAddToArray(panel->images, image);
 172         WMAddToArray(panel->icons, icon);
 173 }
 174
 175 static void scrollIcons(WSwitchPanel *panel, int delta)
 176 {
 177         int nfirst = panel->firstVisible + delta;
 178         int i;
 179         int count = WMGetArrayItemCount(panel->windows);
 180
 181         if (count <= panel->visibleCount)
 182                 return;
 183
 184         if (nfirst < 0)
 185                 nfirst = 0;
 186         else if (nfirst >= count - panel->visibleCount)
 187                 nfirst = count - panel->visibleCount;
 188
 189         if (nfirst == panel->firstVisible)
 190                 return;
 191
 192         WMMoveWidget(panel->iconBox, -nfirst * ICON_TILE_SIZE, 0);
 193
 194         panel->firstVisible = nfirst;
 195
 196         for (i = panel->firstVisible; i < panel->firstVisible + panel->visibleCount; i++)
 197                 changeImage(panel, i, i == panel->current);
 198 }
 199
 200 /*
 201  * 0 1 2
 202  * 3 4 5
 203  * 6 7 8
 204  */
 205 static RImage *assemblePuzzleImage(RImage **images, int width, int height)
 206 {
 207         RImage *img = RCreateImage(width, height, 1);
 208         RImage *tmp;
 209         int tw, th;
 210         RColor color;
 211         if (!img)
 212                 return NULL;
 213
 214         color.red = 0;
 215         color.green = 0;
 216         color.blue = 0;
 217         color.alpha = 255;
 218
 219         RFillImage(img, &color);
 220
 221         tw = width - images[0]->width - images[2]->width;
 222         th = height - images[0]->height - images[6]->height;
 223
 224         if (tw <= 0 || th <= 0)
 225                 return NULL;
 226
 227         /* top */
 228         if (tw > 0) {
 229                 tmp = RSmoothScaleImage(images[1], tw, images[1]->height);
 230                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, images[0]->width, 0);
 231                 RReleaseImage(tmp);
 232         }
 233         /* bottom */
 234         if (tw > 0) {
 235                 tmp = RSmoothScaleImage(images[7], tw, images[7]->height);
 236                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, images[6]->width, height - images[6]->height);
 237                 RReleaseImage(tmp);
 238         }
 239         /* left */
 240         if (th > 0) {
 241                 tmp = RSmoothScaleImage(images[3], images[3]->width, th);
 242                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, 0, images[0]->height);
 243                 RReleaseImage(tmp);
 244         }
 245         /* right */
 246         if (th > 0) {
 247                 tmp = RSmoothScaleImage(images[5], images[5]->width, th);
 248                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, width - images[5]->width, images[2]->height);
 249                 RReleaseImage(tmp);
 250         }
 251         /* center */
 252         if (tw > 0 && th > 0) {
 253                 tmp = RSmoothScaleImage(images[4], tw, th);
 254                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, images[0]->width, images[0]->height);
 255                 RReleaseImage(tmp);
 256         }
 257
 258         /* corners */
 259         RCopyArea(img, images[0], 0, 0, images[0]->width, images[0]->height, 0, 0);
 260         RCopyArea(img, images[2], 0, 0, images[2]->width, images[2]->height, width - images[2]->width, 0);
 261         RCopyArea(img, images[6], 0, 0, images[6]->width, images[6]->height, 0, height - images[6]->height);
 262         RCopyArea(img, images[8], 0, 0, images[8]->width, images[8]->height,
 263                   width - images[8]->width, height - images[8]->height);
 264
 265         return img;
 266 }
 267
 268 static RImage *createBackImage(int width, int height)
 269 {
 270         return assemblePuzzleImage(wPreferences.swbackImage, width, height);
 271 }
 272
 273 static RImage *getTile(void)
 274 {
 275         RImage *stile;
 276
 277         if (!wPreferences.swtileImage)
 278                 return NULL;
 279
 280         stile = RScaleImage(wPreferences.swtileImage, ICON_TILE_SIZE, ICON_TILE_SIZE);
 281         if (!stile)
 282                 return wPreferences.swtileImage;
 283
 284         return stile;
 285 }
 286
 287 static void drawTitle(WSwitchPanel *panel, int idecks, char *title)
 288 {
 289         char *ntitle;
 290         int width = WMWidgetWidth(panel->win);
 291         int x;
 292
 293         if (title)
 294                 ntitle = ShrinkString(panel->font, title, width - 2 * BORDER_SPACE);
 295         else
 296                 ntitle = NULL;
 297
 298         if (panel->bg) {
 299                 if (ntitle) {
 300                         if (strcmp(ntitle, title) != 0) {
 301                                 x = BORDER_SPACE;
 302                         } else {
 303                                 int w = WMWidthOfString(panel->font, ntitle, strlen(ntitle));
 304
 305                                 x = BORDER_SPACE + (idecks - panel->firstVisible) * ICON_TILE_SIZE +
 306                                     ICON_TILE_SIZE / 2 - w / 2;
 307                                 if (x < BORDER_SPACE)
 308                                         x = BORDER_SPACE;
 309                                 else if (x + w > width - BORDER_SPACE)
 310                                         x = width - BORDER_SPACE - w;
 311                         }
 312                 }
 313
 314                 XClearWindow(dpy, WMWidgetXID(panel->win));
 315                 if (ntitle)
 316                         WMDrawString(panel->scr->wmscreen,
 317                                      WMWidgetXID(panel->win),
 318                                      panel->white, panel->font,
 319                                      x,
 320                                      WMWidgetHeight(panel->win) - BORDER_SPACE - LABEL_HEIGHT +
 321                                      WMFontHeight(panel->font) / 2, ntitle, strlen(ntitle));
 322         } else {
 323                 if (ntitle)
 324                         WMSetLabelText(panel->label, ntitle);
 325         }
 326
 327         if (ntitle)
 328                 free(ntitle);
 329 }
 330
 331 static WMArray *makeWindowListArray(WWindow *curwin, int include_unmapped, Bool class_only)
 332 {
 333         WMArray *windows = WMCreateArray(10);
 334         int fl;
 335         WWindow *wwin;
 336
 337         for (fl = 0; fl < 2; fl++) {
 338                 for (wwin = curwin; wwin; wwin = wwin->prev) {
 339                         if (((!fl && canReceiveFocus(wwin) > 0) || (fl && canReceiveFocus(wwin) < 0)) &&
 340                             (wwin->flags.mapped || include_unmapped)) {
 341                                 if (class_only) {
 342                                         if (!wwin->wm_class || !curwin->wm_class)
 343                                                 continue;
 344                                         if (strcmp(wwin->wm_class, curwin->wm_class))
 345                                                 continue;
 346                                 }
 347
 348                                 if (!WFLAGP(wwin, skip_switchpanel))
 349                                         WMAddToArray(windows, wwin);
 350                         }
 351                 }
 352                 wwin = curwin;
 353                 /* start over from the beginning of the list */
 354                 while (wwin->next)
 355                         wwin = wwin->next;
 356
 357                 for (wwin = curwin; wwin && wwin != curwin; wwin = wwin->prev) {
 358                         if (((!fl && canReceiveFocus(wwin) > 0) || (fl && canReceiveFocus(wwin) < 0)) &&
 359                             (wwin->flags.mapped || include_unmapped)) {
 360                                 if (class_only) {
 361                                     if (!wwin->wm_class || !curwin->wm_class)
 362                                         continue;
 363                                     if (strcmp(wwin->wm_class, curwin->wm_class))
 364                                         continue;
 365                                 }
 366
 367                                 if (!WFLAGP(wwin, skip_switchpanel))
 368                                 WMAddToArray(windows, wwin);
 369                         }
 370                 }
 371         }
 372
 373         return windows;
 374 }
 375
 376 WSwitchPanel *wInitSwitchPanel(WScreen *scr, WWindow *curwin, Bool class_only)
 377 {
 378         WWindow *wwin;
 379         WSwitchPanel *panel = wmalloc(sizeof(WSwitchPanel));
 380         WMFrame *viewport;
 381         int i, width, height, iconsThatFitCount, count;
 382         WMRect rect = wGetRectForHead(scr, wGetHeadForPointerLocation(scr));
 383
 384         panel->scr = scr;
 385         panel->windows = makeWindowListArray(curwin, wPreferences.swtileImage != NULL, class_only);
 386         count = WMGetArrayItemCount(panel->windows);
 387
 388         if (count == 0) {
 389                 WMFreeArray(panel->windows);
 390                 wfree(panel);
 391                 return NULL;
 392         }
 393
 394         width = ICON_TILE_SIZE * count;
 395         iconsThatFitCount = count;
 396
 397         if (width > rect.size.width) {
 398                 iconsThatFitCount = (rect.size.width - SCREEN_BORDER_SPACING) / ICON_TILE_SIZE;
 399                 width = iconsThatFitCount * ICON_TILE_SIZE;
 400         }
 401
 402         panel->visibleCount = iconsThatFitCount;
 403
 404         if (!wPreferences.swtileImage)
 405                 return panel;
 406
 407         height = LABEL_HEIGHT + ICON_TILE_SIZE;
 408
 409         panel->tileTmp = RCreateImage(ICON_TILE_SIZE, ICON_TILE_SIZE, 1);
 410         panel->tile = getTile();
 411         if (panel->tile && wPreferences.swbackImage[8])
 412                 panel->bg = createBackImage(width + 2 * BORDER_SPACE, height + 2 * BORDER_SPACE);
 413
 414         if (!panel->tileTmp || !panel->tile) {
 415                 if (panel->bg)
 416                         RReleaseImage(panel->bg);
 417                 panel->bg = NULL;
 418                 if (panel->tile)
 419                         RReleaseImage(panel->tile);
 420                 panel->tile = NULL;
 421                 if (panel->tileTmp)
 422                         RReleaseImage(panel->tileTmp);
 423                 panel->tileTmp = NULL;
 424         }
 425
 426         panel->white = WMWhiteColor(scr->wmscreen);
 427         panel->font = WMBoldSystemFontOfSize(scr->wmscreen, 12);
 428         panel->icons = WMCreateArray(count);
 429         panel->images = WMCreateArray(count);
 430
 431         panel->win = WMCreateWindow(scr->wmscreen, "");
 432
 433         if (!panel->bg) {
 434                 WMFrame *frame = WMCreateFrame(panel->win);
 435                 WMColor *darkGray = WMDarkGrayColor(scr->wmscreen);
 436                 WMSetFrameRelief(frame, WRSimple);
 437                 WMSetViewExpandsToParent(WMWidgetView(frame), 0, 0, 0, 0);
 438
 439                 panel->label = WMCreateLabel(panel->win);
 440                 WMResizeWidget(panel->label, width, LABEL_HEIGHT);
 441                 WMMoveWidget(panel->label, BORDER_SPACE, BORDER_SPACE + ICON_TILE_SIZE + 5);
 442                 WMSetLabelRelief(panel->label, WRSimple);
 443                 WMSetWidgetBackgroundColor(panel->label, darkGray);
 444                 WMSetLabelFont(panel->label, panel->font);
 445                 WMSetLabelTextColor(panel->label, panel->white);
 446
 447                 WMReleaseColor(darkGray);
 448                 height += 5;
 449         }
 450
 451         WMResizeWidget(panel->win, width + 2 * BORDER_SPACE, height + 2 * BORDER_SPACE);
 452
 453         viewport = WMCreateFrame(panel->win);
 454         WMResizeWidget(viewport, width, ICON_TILE_SIZE);
 455         WMMoveWidget(viewport, BORDER_SPACE, BORDER_SPACE);
 456         WMSetFrameRelief(viewport, WRFlat);
 457
 458         panel->iconBox = WMCreateFrame(viewport);
 459         WMMoveWidget(panel->iconBox, 0, 0);
 460         WMResizeWidget(panel->iconBox, ICON_TILE_SIZE * count, ICON_TILE_SIZE);
 461         WMSetFrameRelief(panel->iconBox, WRFlat);
 462
 463         WM_ITERATE_ARRAY(panel->windows, wwin, i) {
 464                 addIconForWindow(panel, panel->iconBox, wwin, i * ICON_TILE_SIZE, 0);
 465         }
 466
 467         WMMapSubwidgets(panel->win);
 468         WMRealizeWidget(panel->win);
 469
 470         WM_ITERATE_ARRAY(panel->windows, wwin, i) {
 471                 changeImage(panel, i, 0);
 472         }
 473
 474         if (panel->bg) {
 475                 Pixmap pixmap, mask;
 476
 477                 RConvertImageMask(scr->rcontext, panel->bg, &pixmap, &mask, 250);
 478
 479                 XSetWindowBackgroundPixmap(dpy, WMWidgetXID(panel->win), pixmap);
 480
 481 #ifdef SHAPE
 482                 if (mask && wShapeSupported)
 483                         XShapeCombineMask(dpy, WMWidgetXID(panel->win), ShapeBounding, 0, 0, mask, ShapeSet);
 484 #endif
 485                 if (pixmap)
 486                         XFreePixmap(dpy, pixmap);
 487
 488                 if (mask)
 489                         XFreePixmap(dpy, mask);
 490         }
 491
 492         {
 493                 WMPoint center;
 494                 center = wGetPointToCenterRectInHead(scr, wGetHeadForPointerLocation(scr),
 495                                                      width + 2 * BORDER_SPACE, height + 2 * BORDER_SPACE);
 496                 WMMoveWidget(panel->win, center.x, center.y);
 497         }
 498
 499         panel->current = WMGetFirstInArray(panel->windows, curwin);
 500         if (panel->current >= 0)
 501                 changeImage(panel, panel->current, 1);
 502
 503         WMMapWidget(panel->win);
 504
 505         return panel;
 506 }
 507
 508 void wSwitchPanelDestroy(WSwitchPanel *panel)
 509 {
 510         int i;
 511         RImage *image;
 512
 513         if (panel->win) {
 514                 Window info_win = panel->scr->info_window;
 515                 XEvent ev;
 516                 ev.xclient.type = ClientMessage;
 517                 ev.xclient.message_type = _XA_WM_IGNORE_FOCUS_EVENTS;
 518                 ev.xclient.format = 32;
 519                 ev.xclient.data.l[0] = True;
 520
 521                 XSendEvent(dpy, info_win, True, EnterWindowMask, &ev);
 522                 WMUnmapWidget(panel->win);
 523
 524                 ev.xclient.data.l[0] = False;
 525                 XSendEvent(dpy, info_win, True, EnterWindowMask, &ev);
 526         }
 527
 528         if (panel->images) {
 529                 WM_ITERATE_ARRAY(panel->images, image, i) {
 530                         if (image)
 531                                 RReleaseImage(image);
 532                 }
 533                 WMFreeArray(panel->images);
 534         }
 535
 536         if (panel->win)
 537                 WMDestroyWidget(panel->win);
 538
 539         if (panel->icons)
 540                 WMFreeArray(panel->icons);
 541
 542         WMFreeArray(panel->windows);
 543
 544         if (panel->tile)
 545                 RReleaseImage(panel->tile);
 546
 547         if (panel->tileTmp)
 548                 RReleaseImage(panel->tileTmp);
 549
 550         if (panel->bg)
 551                 RReleaseImage(panel->bg);
 552
 553         if (panel->font)
 554                 WMReleaseFont(panel->font);
 555
 556         if (panel->white)
 557                 WMReleaseColor(panel->white);
 558
 559         wfree(panel);
 560 }
 561
 562 WWindow *wSwitchPanelSelectNext(WSwitchPanel *panel, int back, int ignore_minimized)
 563 {
 564         WWindow *wwin;
 565         int count = WMGetArrayItemCount(panel->windows);
 566         int orig = panel->current;
 567
 568         if (count == 0)
 569                 return NULL;
 570
 571         if (panel->win)
 572                 changeImage(panel, panel->current, 0);
 573
 574         if (!wPreferences.cycle_ignore_minimized)
 575                 ignore_minimized = False;
 576
 577         if (ignore_minimized && canReceiveFocus(WMGetFromArray(panel->windows, (count + panel->current) % count)) < 0)
 578                 ignore_minimized = False;
 579
 580         do {
 581                 if (back)
 582                         panel->current--;
 583                 else
 584                         panel->current++;
 585
 586                 panel->current= (count + panel->current) % count;
 587                 wwin = WMGetFromArray(panel->windows, panel->current);
 588         } while (ignore_minimized && panel->current != orig && canReceiveFocus(wwin) < 0);
 589
 590         if (panel->current < panel->firstVisible)
 591                 scrollIcons(panel, panel->current - panel->firstVisible);
 592         else if (panel->current - panel->firstVisible >= panel->visibleCount)
 593                 scrollIcons(panel, panel->current - panel->firstVisible - panel->visibleCount + 1);
 594
 595         if (panel->win) {
 596                 drawTitle(panel, panel->current, wwin->frame->title);
 597
 598                 changeImage(panel, panel->current, 1);
 599         }
 600
 601         return wwin;
 602 }
 603
 604 WWindow *wSwitchPanelSelectFirst(WSwitchPanel *panel, int back)
 605 {
 606         WWindow *wwin;
 607         int count = WMGetArrayItemCount(panel->windows);
 608
 609         if (count == 0)
 610                 return NULL;
 611
 612         if (panel->win)
 613                 changeImage(panel, panel->current, 0);
 614
 615         if (back) {
 616                 panel->current = count - 1;
 617                 scrollIcons(panel, count);
 618         } else {
 619                 panel->current = 0;
 620                 scrollIcons(panel, -count);
 621         }
 622
 623         wwin = WMGetFromArray(panel->windows, panel->current);
 624
 625         if (panel->win) {
 626                 drawTitle(panel, panel->current, wwin->frame->title);
 627                 changeImage(panel, panel->current, 1);
 628         }
 629
 630         return wwin;
 631 }
 632
 633 WWindow *wSwitchPanelHandleEvent(WSwitchPanel *panel, XEvent *event)
 634 {
 635         WMFrame *icon;
 636         int i;
 637         int focus = -1;
 638
 639         if (!panel->win)
 640                 return NULL;
 641
 642         if (event->type == MotionNotify) {
 643                 WM_ITERATE_ARRAY(panel->icons, icon, i) {
 644                         if (WMWidgetXID(icon) == event->xmotion.window) {
 645                                 focus = i;
 646                                 break;
 647                         }
 648                 }
 649         }
 650
 651         if (focus >= 0 && panel->current != focus) {
 652                 WWindow *wwin;
 653
 654                 changeImage(panel, panel->current, 0);
 655                 changeImage(panel, focus, 1);
 656                 panel->current = focus;
 657
 658                 wwin = WMGetFromArray(panel->windows, focus);
 659
 660                 drawTitle(panel, panel->current, wwin->frame->title);
 661
 662                 return wwin;
 663         }
 664
 665         return NULL;
 666 }
 667
 668 Window wSwitchPanelGetWindow(WSwitchPanel *swpanel)
 669 {
 670         if (!swpanel->win)
 671                 return None;
 672
 673         return WMWidgetXID(swpanel->win);
 674 }