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 "window.h"
  31 #include "defaults.h"
  32 #include "switchpanel.h"
  33 #include "funcs.h"
  34 #include "xinerama.h"
  35
  36 extern Atom _XA_WM_IGNORE_FOCUS_EVENTS;
  37
  38 #ifdef SHAPE
  39 #include <X11/extensions/shape.h>
  40
  41 extern Bool wShapeSupported;
  42 #endif
  43
  44 struct SwitchPanel {
  45         WScreen *scr;
  46         WMWindow *win;
  47         WMFrame *iconBox;
  48
  49         WMArray *icons;
  50         WMArray *images;
  51         WMArray *windows;
  52         RImage *bg;
  53         int current;
  54         int firstVisible;
  55         int visibleCount;
  56
  57         WMLabel *label;
  58
  59         RImage *tileTmp;
  60         RImage *tile;
  61
  62         WMFont *font;
  63         WMColor *white;
  64 };
  65
  66 extern WPreferences wPreferences;
  67
  68 #define BORDER_SPACE 10
  69 #define ICON_SIZE 48
  70 #define ICON_TILE_SIZE 64
  71 #define LABEL_HEIGHT 25
  72 #define SCREEN_BORDER_SPACING 2*20
  73 #define SCROLL_STEPS (ICON_TILE_SIZE/2)
  74
  75 static int canReceiveFocus(WWindow *wwin)
  76 {
  77         if (wwin->frame->workspace != wwin->screen_ptr->current_workspace)
  78                 return 0;
  79
  80         if (wPreferences.cycle_active_head_only &&
  81             wGetHeadForWindow(wwin) != wGetHeadForPointerLocation(wwin->screen_ptr))
  82                 return 0;
  83
  84         if (WFLAGP(wwin, no_focusable))
  85                 return 0;
  86
  87         if (!wwin->flags.mapped) {
  88                 if (!wwin->flags.shaded && !wwin->flags.miniaturized && !wwin->flags.hidden)
  89                         return 0;
  90                 else
  91                         return -1;
  92         }
  93
  94         return 1;
  95 }
  96
  97 static void changeImage(WSwitchPanel *panel, int idecks, int selected)
  98 {
  99         WMFrame *icon = WMGetFromArray(panel->icons, idecks);
 100         RImage *image = WMGetFromArray(panel->images, idecks);
 101
 102         if (!panel->bg && !panel->tile && !selected)
 103                 WMSetFrameRelief(icon, WRFlat);
 104
 105         if (image && icon) {
 106                 RImage *back;
 107                 int opaq = 255;
 108                 RImage *tile;
 109                 WMPoint pos;
 110                 Pixmap p;
 111
 112                 if (canReceiveFocus(WMGetFromArray(panel->windows, idecks)) < 0)
 113                         opaq = 50;
 114
 115                 pos = WMGetViewPosition(WMWidgetView(icon));
 116                 back = panel->tileTmp;
 117                 if (panel->bg) {
 118                         RCopyArea(back, panel->bg,
 119                                   BORDER_SPACE + pos.x - panel->firstVisible * ICON_TILE_SIZE,
 120                                   BORDER_SPACE + pos.y, back->width, back->height, 0, 0);
 121                 } else {
 122                         RColor color;
 123                         WMScreen *wscr = WMWidgetScreen(icon);
 124                         color.red = 255;
 125                         color.red = WMRedComponentOfColor(WMGrayColor(wscr)) >> 8;
 126                         color.green = WMGreenComponentOfColor(WMGrayColor(wscr)) >> 8;
 127                         color.blue = WMBlueComponentOfColor(WMGrayColor(wscr)) >> 8;
 128                         RFillImage(back, &color);
 129                 }
 130
 131                 if (selected) {
 132                         tile = panel->tile;
 133                         RCombineArea(back, tile, 0, 0, tile->width, tile->height,
 134                                      (back->width - tile->width) / 2, (back->height - tile->height) / 2);
 135                 }
 136
 137                 RCombineAreaWithOpaqueness(back, image, 0, 0, image->width, image->height,
 138                                            (back->width - image->width) / 2, (back->height - image->height) / 2,
 139                                            opaq);
 140
 141                 RConvertImage(panel->scr->rcontext, back, &p);
 142                 XSetWindowBackgroundPixmap(dpy, WMWidgetXID(icon), p);
 143                 XClearWindow(dpy, WMWidgetXID(icon));
 144                 XFreePixmap(dpy, p);
 145         }
 146
 147         if (!panel->bg && !panel->tile && selected)
 148                 WMSetFrameRelief(icon, WRSimple);
 149 }
 150
 151 static RImage *scaleDownIfNeeded(RImage *image)
 152 {
 153         if (image && ((image->width - ICON_SIZE) > 2 || (image->height - ICON_SIZE) > 2)) {
 154                 RImage *nimage;
 155                 nimage = RScaleImage(image, ICON_SIZE, (image->height * ICON_SIZE / image->width));
 156                 RReleaseImage(image);
 157                 image = nimage;
 158         }
 159
 160         return image;
 161 }
 162
 163 static void addIconForWindow(WSwitchPanel *panel, WMWidget *parent, WWindow *wwin, int x, int y)
 164 {
 165         WMFrame *icon = WMCreateFrame(parent);
 166         RImage *image = NULL;
 167
 168         WMSetFrameRelief(icon, WRFlat);
 169         WMResizeWidget(icon, ICON_TILE_SIZE, ICON_TILE_SIZE);
 170         WMMoveWidget(icon, x, y);
 171
 172         if (!WFLAGP(wwin, always_user_icon) && wwin->net_icon_image)
 173                 image = RRetainImage(wwin->net_icon_image);
 174
 175         /* wDefaultGetImage() includes the default icon image */
 176         if (!image)
 177                 image = wDefaultGetImage(panel->scr, wwin->wm_instance, wwin->wm_class, ICON_TILE_SIZE);
 178
 179         image = scaleDownIfNeeded(image);
 180
 181         WMAddToArray(panel->images, image);
 182         WMAddToArray(panel->icons, icon);
 183 }
 184
 185 static void scrollIcons(WSwitchPanel *panel, int delta)
 186 {
 187         int nfirst = panel->firstVisible + delta;
 188         int i;
 189         int count = WMGetArrayItemCount(panel->windows);
 190
 191         if (count <= panel->visibleCount)
 192                 return;
 193
 194         if (nfirst < 0)
 195                 nfirst = 0;
 196         else if (nfirst >= count - panel->visibleCount)
 197                 nfirst = count - panel->visibleCount;
 198
 199         if (nfirst == panel->firstVisible)
 200                 return;
 201
 202         WMMoveWidget(panel->iconBox, -nfirst * ICON_TILE_SIZE, 0);
 203
 204         panel->firstVisible = nfirst;
 205
 206         for (i = panel->firstVisible; i < panel->firstVisible + panel->visibleCount; i++)
 207                 changeImage(panel, i, i == panel->current);
 208 }
 209
 210 /*
 211  * 0 1 2
 212  * 3 4 5
 213  * 6 7 8
 214  */
 215 static RImage *assemblePuzzleImage(RImage **images, int width, int height)
 216 {
 217         RImage *img = RCreateImage(width, height, 1);
 218         RImage *tmp;
 219         int tw, th;
 220         RColor color;
 221         if (!img)
 222                 return NULL;
 223
 224         color.red = 0;
 225         color.green = 0;
 226         color.blue = 0;
 227         color.alpha = 255;
 228
 229         RFillImage(img, &color);
 230
 231         tw = width - images[0]->width - images[2]->width;
 232         th = height - images[0]->height - images[6]->height;
 233
 234         if (tw <= 0 || th <= 0)
 235                 return NULL;
 236
 237         /* top */
 238         if (tw > 0) {
 239                 tmp = RSmoothScaleImage(images[1], tw, images[1]->height);
 240                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, images[0]->width, 0);
 241                 RReleaseImage(tmp);
 242         }
 243         /* bottom */
 244         if (tw > 0) {
 245                 tmp = RSmoothScaleImage(images[7], tw, images[7]->height);
 246                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, images[6]->width, height - images[6]->height);
 247                 RReleaseImage(tmp);
 248         }
 249         /* left */
 250         if (th > 0) {
 251                 tmp = RSmoothScaleImage(images[3], images[3]->width, th);
 252                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, 0, images[0]->height);
 253                 RReleaseImage(tmp);
 254         }
 255         /* right */
 256         if (th > 0) {
 257                 tmp = RSmoothScaleImage(images[5], images[5]->width, th);
 258                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, width - images[5]->width, images[2]->height);
 259                 RReleaseImage(tmp);
 260         }
 261         /* center */
 262         if (tw > 0 && th > 0) {
 263                 tmp = RSmoothScaleImage(images[4], tw, th);
 264                 RCopyArea(img, tmp, 0, 0, tmp->width, tmp->height, images[0]->width, images[0]->height);
 265                 RReleaseImage(tmp);
 266         }
 267
 268         /* corners */
 269         RCopyArea(img, images[0], 0, 0, images[0]->width, images[0]->height, 0, 0);
 270         RCopyArea(img, images[2], 0, 0, images[2]->width, images[2]->height, width - images[2]->width, 0);
 271         RCopyArea(img, images[6], 0, 0, images[6]->width, images[6]->height, 0, height - images[6]->height);
 272         RCopyArea(img, images[8], 0, 0, images[8]->width, images[8]->height,
 273                   width - images[8]->width, height - images[8]->height);
 274
 275         return img;
 276 }
 277
 278 static RImage *createBackImage(int width, int height)
 279 {
 280         return assemblePuzzleImage(wPreferences.swbackImage, width, height);
 281 }
 282
 283 static RImage *getTile(void)
 284 {
 285         RImage *stile;
 286
 287         if (!wPreferences.swtileImage)
 288                 return NULL;
 289
 290         stile = RScaleImage(wPreferences.swtileImage, ICON_TILE_SIZE, ICON_TILE_SIZE);
 291         if (!stile)
 292                 return wPreferences.swtileImage;
 293
 294         return stile;
 295 }
 296
 297 static void drawTitle(WSwitchPanel *panel, int idecks, char *title)
 298 {
 299         char *ntitle;
 300         int width = WMWidgetWidth(panel->win);
 301         int x;
 302
 303         if (title)
 304                 ntitle = ShrinkString(panel->font, title, width - 2 * BORDER_SPACE);
 305         else
 306                 ntitle = NULL;
 307
 308         if (panel->bg) {
 309                 if (ntitle) {
 310                         if (strcmp(ntitle, title) != 0) {
 311                                 x = BORDER_SPACE;
 312                         } else {
 313                                 int w = WMWidthOfString(panel->font, ntitle, strlen(ntitle));
 314
 315                                 x = BORDER_SPACE + (idecks - panel->firstVisible) * ICON_TILE_SIZE +
 316                                     ICON_TILE_SIZE / 2 - w / 2;
 317                                 if (x < BORDER_SPACE)
 318                                         x = BORDER_SPACE;
 319                                 else if (x + w > width - BORDER_SPACE)
 320                                         x = width - BORDER_SPACE - w;
 321                         }
 322                 }
 323
 324                 XClearWindow(dpy, WMWidgetXID(panel->win));
 325                 if (ntitle)
 326                         WMDrawString(panel->scr->wmscreen,
 327                                      WMWidgetXID(panel->win),
 328                                      panel->white, panel->font,
 329                                      x,
 330                                      WMWidgetHeight(panel->win) - BORDER_SPACE - LABEL_HEIGHT +
 331                                      WMFontHeight(panel->font) / 2, ntitle, strlen(ntitle));
 332         } else {
 333                 if (ntitle)
 334                         WMSetLabelText(panel->label, ntitle);
 335         }
 336
 337         if (ntitle)
 338                 free(ntitle);
 339 }
 340
 341 static WMArray *makeWindowListArray(WWindow *curwin, int include_unmapped, Bool class_only)
 342 {
 343         WMArray *windows = WMCreateArray(10);
 344         int fl;
 345         WWindow *wwin;
 346
 347         for (fl = 0; fl < 2; fl++) {
 348                 for (wwin = curwin; wwin; wwin = wwin->prev) {
 349                         if (((!fl && canReceiveFocus(wwin) > 0) || (fl && canReceiveFocus(wwin) < 0)) &&
 350                             (wwin->flags.mapped || include_unmapped)) {
 351                                 if (class_only) {
 352                                         if (!wwin->wm_class || !curwin->wm_class)
 353                                                 continue;
 354                                         if (strcmp(wwin->wm_class, curwin->wm_class))
 355                                                 continue;
 356                                 }
 357
 358                                 if (!WFLAGP(wwin, skip_switchpanel))
 359                                         WMAddToArray(windows, wwin);
 360                         }
 361                 }
 362                 wwin = curwin;
 363                 /* start over from the beginning of the list */
 364                 while (wwin->next)
 365                         wwin = wwin->next;
 366
 367                 for (wwin = curwin; wwin && wwin != curwin; wwin = wwin->prev) {
 368                         if (((!fl && canReceiveFocus(wwin) > 0) || (fl && canReceiveFocus(wwin) < 0)) &&
 369                             (wwin->flags.mapped || include_unmapped)) {
 370                                 if (class_only) {
 371                                     if (!wwin->wm_class || !curwin->wm_class)
 372                                         continue;
 373                                     if (strcmp(wwin->wm_class, curwin->wm_class))
 374                                         continue;
 375                                 }
 376
 377                                 if (!WFLAGP(wwin, skip_switchpanel))
 378                                 WMAddToArray(windows, wwin);
 379                         }
 380                 }
 381         }
 382
 383         return windows;
 384 }
 385
 386 WSwitchPanel *wInitSwitchPanel(WScreen *scr, WWindow *curwin, Bool class_only)
 387 {
 388         WWindow *wwin;
 389         WSwitchPanel *panel = wmalloc(sizeof(WSwitchPanel));
 390         WMFrame *viewport;
 391         int i, width, height, iconsThatFitCount, count;
 392         WMRect rect = wGetRectForHead(scr, wGetHeadForPointerLocation(scr));
 393
 394         panel->scr = scr;
 395         panel->windows = makeWindowListArray(curwin, wPreferences.swtileImage != NULL, class_only);
 396         count = WMGetArrayItemCount(panel->windows);
 397
 398         if (count == 0) {
 399                 WMFreeArray(panel->windows);
 400                 wfree(panel);
 401                 return NULL;
 402         }
 403
 404         width = ICON_TILE_SIZE * count;
 405         iconsThatFitCount = count;
 406
 407         if (width > rect.size.width) {
 408                 iconsThatFitCount = (rect.size.width - SCREEN_BORDER_SPACING) / ICON_TILE_SIZE;
 409                 width = iconsThatFitCount * ICON_TILE_SIZE;
 410         }
 411
 412         panel->visibleCount = iconsThatFitCount;
 413
 414         if (!wPreferences.swtileImage)
 415                 return panel;
 416
 417         height = LABEL_HEIGHT + ICON_TILE_SIZE;
 418
 419         panel->tileTmp = RCreateImage(ICON_TILE_SIZE, ICON_TILE_SIZE, 1);
 420         panel->tile = getTile();
 421         if (panel->tile && wPreferences.swbackImage[8])
 422                 panel->bg = createBackImage(width + 2 * BORDER_SPACE, height + 2 * BORDER_SPACE);
 423
 424         if (!panel->tileTmp || !panel->tile) {
 425                 if (panel->bg)
 426                         RReleaseImage(panel->bg);
 427                 panel->bg = NULL;
 428                 if (panel->tile)
 429                         RReleaseImage(panel->tile);
 430                 panel->tile = NULL;
 431                 if (panel->tileTmp)
 432                         RReleaseImage(panel->tileTmp);
 433                 panel->tileTmp = NULL;
 434         }
 435
 436         panel->white = WMWhiteColor(scr->wmscreen);
 437         panel->font = WMBoldSystemFontOfSize(scr->wmscreen, 12);
 438         panel->icons = WMCreateArray(count);
 439         panel->images = WMCreateArray(count);
 440
 441         panel->win = WMCreateWindow(scr->wmscreen, "");
 442
 443         if (!panel->bg) {
 444                 WMFrame *frame = WMCreateFrame(panel->win);
 445                 WMColor *darkGray = WMDarkGrayColor(scr->wmscreen);
 446                 WMSetFrameRelief(frame, WRSimple);
 447                 WMSetViewExpandsToParent(WMWidgetView(frame), 0, 0, 0, 0);
 448
 449                 panel->label = WMCreateLabel(panel->win);
 450                 WMResizeWidget(panel->label, width, LABEL_HEIGHT);
 451                 WMMoveWidget(panel->label, BORDER_SPACE, BORDER_SPACE + ICON_TILE_SIZE + 5);
 452                 WMSetLabelRelief(panel->label, WRSimple);
 453                 WMSetWidgetBackgroundColor(panel->label, darkGray);
 454                 WMSetLabelFont(panel->label, panel->font);
 455                 WMSetLabelTextColor(panel->label, panel->white);
 456
 457                 WMReleaseColor(darkGray);
 458                 height += 5;
 459         }
 460
 461         WMResizeWidget(panel->win, width + 2 * BORDER_SPACE, height + 2 * BORDER_SPACE);
 462
 463         viewport = WMCreateFrame(panel->win);
 464         WMResizeWidget(viewport, width, ICON_TILE_SIZE);
 465         WMMoveWidget(viewport, BORDER_SPACE, BORDER_SPACE);
 466         WMSetFrameRelief(viewport, WRFlat);
 467
 468         panel->iconBox = WMCreateFrame(viewport);
 469         WMMoveWidget(panel->iconBox, 0, 0);
 470         WMResizeWidget(panel->iconBox, ICON_TILE_SIZE * count, ICON_TILE_SIZE);
 471         WMSetFrameRelief(panel->iconBox, WRFlat);
 472
 473         WM_ITERATE_ARRAY(panel->windows, wwin, i) {
 474                 addIconForWindow(panel, panel->iconBox, wwin, i * ICON_TILE_SIZE, 0);
 475         }
 476
 477         WMMapSubwidgets(panel->win);
 478         WMRealizeWidget(panel->win);
 479
 480         WM_ITERATE_ARRAY(panel->windows, wwin, i) {
 481                 changeImage(panel, i, 0);
 482         }
 483
 484         if (panel->bg) {
 485                 Pixmap pixmap, mask;
 486
 487                 RConvertImageMask(scr->rcontext, panel->bg, &pixmap, &mask, 250);
 488
 489                 XSetWindowBackgroundPixmap(dpy, WMWidgetXID(panel->win), pixmap);
 490
 491 #ifdef SHAPE
 492                 if (mask && wShapeSupported)
 493                         XShapeCombineMask(dpy, WMWidgetXID(panel->win), ShapeBounding, 0, 0, mask, ShapeSet);
 494 #endif
 495                 if (pixmap)
 496                         XFreePixmap(dpy, pixmap);
 497
 498                 if (mask)
 499                         XFreePixmap(dpy, mask);
 500         }
 501
 502         {
 503                 WMPoint center;
 504                 center = wGetPointToCenterRectInHead(scr, wGetHeadForPointerLocation(scr),
 505                                                      width + 2 * BORDER_SPACE, height + 2 * BORDER_SPACE);
 506                 WMMoveWidget(panel->win, center.x, center.y);
 507         }
 508
 509         panel->current = WMGetFirstInArray(panel->windows, curwin);
 510         if (panel->current >= 0)
 511                 changeImage(panel, panel->current, 1);
 512
 513         WMMapWidget(panel->win);
 514
 515         return panel;
 516 }
 517
 518 void wSwitchPanelDestroy(WSwitchPanel *panel)
 519 {
 520         int i;
 521         RImage *image;
 522
 523         if (panel->win) {
 524                 Window info_win = panel->scr->info_window;
 525                 XEvent ev;
 526                 ev.xclient.type = ClientMessage;
 527                 ev.xclient.message_type = _XA_WM_IGNORE_FOCUS_EVENTS;
 528                 ev.xclient.format = 32;
 529                 ev.xclient.data.l[0] = True;
 530
 531                 XSendEvent(dpy, info_win, True, EnterWindowMask, &ev);
 532                 WMUnmapWidget(panel->win);
 533
 534                 ev.xclient.data.l[0] = False;
 535                 XSendEvent(dpy, info_win, True, EnterWindowMask, &ev);
 536         }
 537
 538         if (panel->images) {
 539                 WM_ITERATE_ARRAY(panel->images, image, i) {
 540                         if (image)
 541                                 RReleaseImage(image);
 542                 }
 543                 WMFreeArray(panel->images);
 544         }
 545
 546         if (panel->win)
 547                 WMDestroyWidget(panel->win);
 548
 549         if (panel->icons)
 550                 WMFreeArray(panel->icons);
 551
 552         WMFreeArray(panel->windows);
 553
 554         if (panel->tile)
 555                 RReleaseImage(panel->tile);
 556
 557         if (panel->tileTmp)
 558                 RReleaseImage(panel->tileTmp);
 559
 560         if (panel->bg)
 561                 RReleaseImage(panel->bg);
 562
 563         if (panel->font)
 564                 WMReleaseFont(panel->font);
 565
 566         if (panel->white)
 567                 WMReleaseColor(panel->white);
 568
 569         wfree(panel);
 570 }
 571
 572 WWindow *wSwitchPanelSelectNext(WSwitchPanel *panel, int back)
 573 {
 574         WWindow *wwin;
 575         int count = WMGetArrayItemCount(panel->windows);
 576
 577         if (count == 0)
 578                 return NULL;
 579
 580         if (panel->win)
 581                 changeImage(panel, panel->current, 0);
 582
 583         if (back)
 584                 panel->current--;
 585         else
 586                 panel->current++;
 587
 588         wwin = WMGetFromArray(panel->windows, (count + panel->current) % count);
 589
 590         if (back) {
 591                 if (panel->current < 0)
 592                         scrollIcons(panel, count);
 593                 else if (panel->current < panel->firstVisible)
 594                         scrollIcons(panel, -1);
 595         } else {
 596                 if (panel->current >= count)
 597                         scrollIcons(panel, -count);
 598                 else if (panel->current - panel->firstVisible >= panel->visibleCount)
 599                         scrollIcons(panel, 1);
 600         }
 601
 602         panel->current = (count + panel->current) % count;
 603
 604         if (panel->win) {
 605                 drawTitle(panel, panel->current, wwin->frame->title);
 606
 607                 changeImage(panel, panel->current, 1);
 608         }
 609
 610         return wwin;
 611 }
 612
 613 WWindow *wSwitchPanelSelectFirst(WSwitchPanel *panel, int back)
 614 {
 615         WWindow *wwin;
 616         int count = WMGetArrayItemCount(panel->windows);
 617
 618         if (count == 0)
 619                 return NULL;
 620
 621         if (panel->win)
 622                 changeImage(panel, panel->current, 0);
 623
 624         if (back) {
 625                 panel->current = count - 1;
 626                 scrollIcons(panel, count);
 627         } else {
 628                 panel->current = 0;
 629                 scrollIcons(panel, -count);
 630         }
 631
 632         wwin = WMGetFromArray(panel->windows, panel->current);
 633
 634         if (panel->win) {
 635                 drawTitle(panel, panel->current, wwin->frame->title);
 636                 changeImage(panel, panel->current, 1);
 637         }
 638
 639         return wwin;
 640 }
 641
 642 WWindow *wSwitchPanelHandleEvent(WSwitchPanel *panel, XEvent *event)
 643 {
 644         WMFrame *icon;
 645         int i;
 646         int focus = -1;
 647
 648         if (!panel->win)
 649                 return NULL;
 650
 651         if (event->type == MotionNotify) {
 652                 WM_ITERATE_ARRAY(panel->icons, icon, i) {
 653                         if (WMWidgetXID(icon) == event->xmotion.window) {
 654                                 focus = i;
 655                                 break;
 656                         }
 657                 }
 658         }
 659
 660         if (focus >= 0 && panel->current != focus) {
 661                 WWindow *wwin;
 662
 663                 changeImage(panel, panel->current, 0);
 664                 changeImage(panel, focus, 1);
 665                 panel->current = focus;
 666
 667                 wwin = WMGetFromArray(panel->windows, focus);
 668
 669                 drawTitle(panel, panel->current, wwin->frame->title);
 670
 671                 return wwin;
 672         }
 673
 674         return NULL;
 675 }
 676
 677 Window wSwitchPanelGetWindow(WSwitchPanel *swpanel)
 678 {
 679         if (!swpanel->win)
 680                 return None;
 681
 682         return WMWidgetXID(swpanel->win);
 683 }