dlls/comctl32/trackbar.c

   1 /*
   2  * Trackbar control
   3  *
   4  * Copyright 1998, 1999 Eric Kohl
   5  * Copyright 1998, 1999 Alex Priem
   6  * Copyright 2002 Dimitrie O. Paun
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  * NOTE
  23  *
  24  * This code was audited for completeness against the documented features
  25  * of Comctl32.dll version 6.0 on Sep. 12, 2002, by Dimitrie O. Paun.
  26  *
  27  * Unless otherwise noted, we believe this code to be complete, as per
  28  * the specification mentioned above.
  29  * If you discover missing features, or bugs, please note them below.
  30  *
  31  */
  32
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 #include "windef.h"
  39 #include "winbase.h"
  40 #include "wingdi.h"
  41 #include "winuser.h"
  42 #include "winnls.h"
  43 #include "commctrl.h"
  44 #include "uxtheme.h"
  45 #include "vssym32.h"
  46 #include "wine/debug.h"
  47
  48 #include "comctl32.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(trackbar);
  51
  52 typedef struct
  53 {
  54     HWND hwndSelf;
  55     DWORD dwStyle;
  56     LONG lRangeMin;
  57     LONG lRangeMax;
  58     LONG lLineSize;
  59     LONG lPageSize;
  60     LONG lSelMin;
  61     LONG lSelMax;
  62     LONG lPos;
  63     UINT uThumbLen;
  64     UINT uNumTics;
  65     UINT uTicFreq;
  66     HWND hwndNotify;
  67     HWND hwndToolTip;
  68     HWND hwndBuddyLA;
  69     HWND hwndBuddyRB;
  70     INT  fLocation;
  71     INT  flags;
  72     BOOL bUnicode;
  73     BOOL bFocussed;
  74     RECT rcChannel;
  75     RECT rcSelection;
  76     RECT rcThumb;
  77     LPLONG tics;
  78 } TRACKBAR_INFO;
  79
  80 #define TB_REFRESH_TIMER        1
  81 #define TB_REFRESH_DELAY        500
  82
  83 #define TOOLTIP_OFFSET          2     /* distance from ctrl edge to tooltip */
  84
  85 #define TB_DEFAULTPAGESIZE      20
  86
  87 /* Used by TRACKBAR_Refresh to find out which parts of the control
  88    need to be recalculated */
  89
  90 #define TB_THUMBPOSCHANGED      1
  91 #define TB_THUMBSIZECHANGED     2
  92 #define TB_THUMBCHANGED         (TB_THUMBPOSCHANGED | TB_THUMBSIZECHANGED)
  93 #define TB_SELECTIONCHANGED     4
  94 #define TB_DRAG_MODE            8     /* we're dragging the slider */
  95 #define TB_AUTO_PAGE_LEFT       16
  96 #define TB_AUTO_PAGE_RIGHT      32
  97 #define TB_AUTO_PAGE            (TB_AUTO_PAGE_LEFT | TB_AUTO_PAGE_RIGHT)
  98 #define TB_THUMB_HOT            64    /* mouse hovers above thumb */
  99
 100 /* helper defines for TRACKBAR_DrawTic */
 101 #define TIC_EDGE                0x20
 102 #define TIC_SELECTIONMARKMAX    0x80
 103 #define TIC_SELECTIONMARKMIN    0x100
 104 #define TIC_SELECTIONMARK       (TIC_SELECTIONMARKMAX | TIC_SELECTIONMARKMIN)
 105
 106 static const WCHAR themeClass[] = { 'T','r','a','c','k','b','a','r',0 };
 107
 108 static inline int
 109 notify_customdraw (const TRACKBAR_INFO *infoPtr, NMCUSTOMDRAW *pnmcd, int stage)
 110 {
 111     pnmcd->dwDrawStage = stage;
 112     return SendMessageW (infoPtr->hwndNotify, WM_NOTIFY,
 113                          pnmcd->hdr.idFrom, (LPARAM)pnmcd);
 114 }
 115
 116 static LRESULT notify_hdr (const TRACKBAR_INFO *infoPtr, INT code, LPNMHDR pnmh)
 117 {
 118     LRESULT result;
 119
 120     TRACE("(code=%d)\n", code);
 121
 122     pnmh->hwndFrom = infoPtr->hwndSelf;
 123     pnmh->idFrom = GetWindowLongPtrW(infoPtr->hwndSelf, GWLP_ID);
 124     pnmh->code = code;
 125     result = SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, pnmh->idFrom, (LPARAM)pnmh);
 126
 127     TRACE("  <= %ld\n", result);
 128
 129     return result;
 130 }
 131
 132 static inline int notify (const TRACKBAR_INFO *infoPtr, INT code)
 133 {
 134     NMHDR nmh;
 135     return notify_hdr(infoPtr, code, &nmh);
 136 }
 137
 138 static void notify_with_scroll (const TRACKBAR_INFO *infoPtr, UINT code)
 139 {
 140     UINT scroll = infoPtr->dwStyle & TBS_VERT ? WM_VSCROLL : WM_HSCROLL;
 141
 142     TRACE("%x\n", code);
 143
 144     SendMessageW (infoPtr->hwndNotify, scroll, code, (LPARAM)infoPtr->hwndSelf);
 145 }
 146
 147 static void TRACKBAR_RecalculateTics (TRACKBAR_INFO *infoPtr)
 148 {
 149     int tic;
 150     unsigned nrTics, i;
 151
 152     if (infoPtr->uTicFreq && infoPtr->lRangeMax >= infoPtr->lRangeMin) {
 153         nrTics=(infoPtr->lRangeMax - infoPtr->lRangeMin)/infoPtr->uTicFreq;
 154         /* don't add extra tic if there's no remainder */
 155         if (nrTics && ((infoPtr->lRangeMax - infoPtr->lRangeMin) % infoPtr->uTicFreq == 0))
 156           nrTics--;
 157     }
 158     else {
 159         Free (infoPtr->tics);
 160         infoPtr->tics = NULL;
 161         infoPtr->uNumTics = 0;
 162         return;
 163     }
 164
 165     if (nrTics != infoPtr->uNumTics) {
 166         infoPtr->tics=ReAlloc (infoPtr->tics,
 167                                         (nrTics+1)*sizeof (DWORD));
 168         if (!infoPtr->tics) {
 169             infoPtr->uNumTics = 0;
 170             notify(infoPtr, NM_OUTOFMEMORY);
 171             return;
 172         }
 173         infoPtr->uNumTics = nrTics;
 174     }
 175
 176     tic = infoPtr->lRangeMin + infoPtr->uTicFreq;
 177     for (i = 0; i < nrTics; i++, tic += infoPtr->uTicFreq)
 178         infoPtr->tics[i] = tic;
 179 }
 180
 181 /* converts from physical (mouse) position to logical position
 182    (in range of trackbar) */
 183
 184 static inline LONG
 185 TRACKBAR_ConvertPlaceToPosition (const TRACKBAR_INFO *infoPtr, int place)
 186 {
 187     double range, width, pos, offsetthumb;
 188
 189     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 190     if (infoPtr->dwStyle & TBS_VERT) {
 191         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 192         width = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - (offsetthumb * 2) - 1;
 193         pos = (range*(place - infoPtr->rcChannel.top - offsetthumb)) / width;
 194     } else {
 195         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 196         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - (offsetthumb * 2) - 1;
 197         pos = (range*(place - infoPtr->rcChannel.left - offsetthumb)) / width;
 198     }
 199     pos += infoPtr->lRangeMin;
 200     if (pos > infoPtr->lRangeMax)
 201         pos = infoPtr->lRangeMax;
 202     else if (pos < infoPtr->lRangeMin)
 203         pos = infoPtr->lRangeMin;
 204
 205     TRACE("%.2f\n", pos);
 206     return (LONG)(pos + 0.5);
 207 }
 208
 209
 210 /* return: 0> prev, 0 none, >0 next */
 211 static LONG
 212 TRACKBAR_GetAutoPageDirection (const TRACKBAR_INFO *infoPtr, POINT clickPoint)
 213 {
 214     RECT pageRect;
 215
 216     if (infoPtr->dwStyle & TBS_VERT) {
 217         pageRect.top = infoPtr->rcChannel.top;
 218         pageRect.bottom = infoPtr->rcChannel.bottom;
 219         pageRect.left = infoPtr->rcThumb.left;
 220         pageRect.right = infoPtr->rcThumb.right;
 221     } else {
 222         pageRect.top = infoPtr->rcThumb.top;
 223         pageRect.bottom = infoPtr->rcThumb.bottom;
 224         pageRect.left = infoPtr->rcChannel.left;
 225         pageRect.right = infoPtr->rcChannel.right;
 226     }
 227
 228
 229     if (PtInRect(&pageRect, clickPoint))
 230     {
 231         int clickPlace = (infoPtr->dwStyle & TBS_VERT) ? clickPoint.y : clickPoint.x;
 232
 233         LONG clickPos = TRACKBAR_ConvertPlaceToPosition(infoPtr, clickPlace);
 234
 235         return clickPos - infoPtr->lPos;
 236     }
 237
 238     return 0;
 239 }
 240
 241 static inline void
 242 TRACKBAR_PageDown (TRACKBAR_INFO *infoPtr)
 243 {
 244     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 245
 246     infoPtr->lPos += infoPtr->lPageSize;
 247     if (infoPtr->lPos > infoPtr->lRangeMax)
 248         infoPtr->lPos = infoPtr->lRangeMax;
 249     notify_with_scroll (infoPtr, TB_PAGEDOWN);
 250 }
 251
 252
 253 static inline void
 254 TRACKBAR_PageUp (TRACKBAR_INFO *infoPtr)
 255 {
 256     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 257
 258     infoPtr->lPos -= infoPtr->lPageSize;
 259     if (infoPtr->lPos < infoPtr->lRangeMin)
 260         infoPtr->lPos = infoPtr->lRangeMin;
 261     notify_with_scroll (infoPtr, TB_PAGEUP);
 262 }
 263
 264 static inline void TRACKBAR_LineUp(TRACKBAR_INFO *infoPtr)
 265 {
 266     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 267     infoPtr->lPos -= infoPtr->lLineSize;
 268     if (infoPtr->lPos < infoPtr->lRangeMin)
 269         infoPtr->lPos = infoPtr->lRangeMin;
 270     notify_with_scroll (infoPtr, TB_LINEUP);
 271 }
 272
 273 static inline void TRACKBAR_LineDown(TRACKBAR_INFO *infoPtr)
 274 {
 275     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 276     infoPtr->lPos += infoPtr->lLineSize;
 277     if (infoPtr->lPos > infoPtr->lRangeMax)
 278         infoPtr->lPos = infoPtr->lRangeMax;
 279     notify_with_scroll (infoPtr, TB_LINEDOWN);
 280 }
 281
 282 static void
 283 TRACKBAR_CalcChannel (TRACKBAR_INFO *infoPtr)
 284 {
 285     INT cyChannel, offsetthumb, offsetedge;
 286     RECT lpRect, *channel = & infoPtr->rcChannel;
 287
 288     GetClientRect (infoPtr->hwndSelf, &lpRect);
 289
 290     offsetthumb = infoPtr->uThumbLen / 4;
 291     offsetedge  = offsetthumb + 3;
 292     cyChannel   = (infoPtr->dwStyle & TBS_ENABLESELRANGE) ? offsetthumb*3 : 4;
 293     if (infoPtr->dwStyle & TBS_VERT) {
 294         channel->top    = lpRect.top + offsetedge;
 295         channel->bottom = lpRect.bottom - offsetedge;
 296         if (infoPtr->dwStyle & TBS_ENABLESELRANGE)
 297             channel->left = lpRect.left + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 298         else
 299             channel->left = lpRect.left + (infoPtr->uThumbLen / 2) - 1;
 300         if (infoPtr->dwStyle & TBS_BOTH) {
 301             if (infoPtr->dwStyle & TBS_NOTICKS)
 302                 channel->left += 1;
 303             else
 304                 channel->left += 9;
 305         }
 306         else if (infoPtr->dwStyle & TBS_TOP) {
 307             if (infoPtr->dwStyle & TBS_NOTICKS)
 308                 channel->left += 2;
 309             else
 310                 channel->left += 10;
 311         }
 312         channel->right = channel->left + cyChannel;
 313     } else {
 314         channel->left = lpRect.left + offsetedge;
 315         channel->right = lpRect.right - offsetedge;
 316         if (infoPtr->dwStyle & TBS_ENABLESELRANGE)
 317             channel->top = lpRect.top + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 318         else
 319             channel->top = lpRect.top + (infoPtr->uThumbLen / 2) - 1;
 320         if (infoPtr->dwStyle & TBS_BOTH) {
 321             if (infoPtr->dwStyle & TBS_NOTICKS)
 322                 channel->top += 1;
 323             else
 324                 channel->top += 9;
 325         }
 326         else if (infoPtr->dwStyle & TBS_TOP) {
 327             if (infoPtr->dwStyle & TBS_NOTICKS)
 328                 channel->top += 2;
 329             else
 330                 channel->top += 10;
 331         }
 332         channel->bottom   = channel->top + cyChannel;
 333     }
 334 }
 335
 336 static void
 337 TRACKBAR_CalcThumb (const TRACKBAR_INFO *infoPtr, LONG lPos, RECT *thumb)
 338 {
 339     int range, width, height, thumbwidth;
 340     RECT lpRect;
 341
 342     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 343     thumbwidth = (infoPtr->uThumbLen / 2) | 1;
 344
 345     if (!range) range = 1;
 346
 347     GetClientRect(infoPtr->hwndSelf, &lpRect);
 348     if (infoPtr->dwStyle & TBS_VERT)
 349     {
 350         height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - thumbwidth;
 351
 352         if ((infoPtr->dwStyle & (TBS_BOTH | TBS_LEFT)) && !(infoPtr->dwStyle & TBS_NOTICKS))
 353             thumb->left = 10;
 354         else
 355             thumb->left = 2;
 356         thumb->right = thumb->left + infoPtr->uThumbLen;
 357         thumb->top = infoPtr->rcChannel.top +
 358                      (height*(lPos - infoPtr->lRangeMin))/range;
 359         thumb->bottom = thumb->top + thumbwidth;
 360     }
 361     else
 362     {
 363         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - thumbwidth;
 364
 365         thumb->left = infoPtr->rcChannel.left +
 366                       (width*(lPos - infoPtr->lRangeMin))/range;
 367         thumb->right = thumb->left + thumbwidth;
 368         if ((infoPtr->dwStyle & (TBS_BOTH | TBS_TOP)) && !(infoPtr->dwStyle & TBS_NOTICKS))
 369             thumb->top = 10;
 370         else
 371             thumb->top = 2;
 372         thumb->bottom = thumb->top + infoPtr->uThumbLen;
 373     }
 374 }
 375
 376 static inline void
 377 TRACKBAR_UpdateThumb (TRACKBAR_INFO *infoPtr)
 378 {
 379     TRACKBAR_CalcThumb(infoPtr, infoPtr->lPos, &infoPtr->rcThumb);
 380 }
 381
 382 static inline void
 383 TRACKBAR_InvalidateAll (const TRACKBAR_INFO *infoPtr)
 384 {
 385     InvalidateRect(infoPtr->hwndSelf, NULL, FALSE);
 386 }
 387
 388 static void
 389 TRACKBAR_InvalidateThumb (const TRACKBAR_INFO *infoPtr, LONG thumbPos)
 390 {
 391     RECT rcThumb;
 392
 393     TRACKBAR_CalcThumb(infoPtr, thumbPos, &rcThumb);
 394     InflateRect(&rcThumb, 1, 1);
 395     InvalidateRect(infoPtr->hwndSelf, &rcThumb, FALSE);
 396 }
 397
 398 static inline void
 399 TRACKBAR_InvalidateThumbMove (const TRACKBAR_INFO *infoPtr, LONG oldPos, LONG newPos)
 400 {
 401     TRACKBAR_InvalidateThumb (infoPtr, oldPos);
 402     if (newPos != oldPos)
 403         TRACKBAR_InvalidateThumb (infoPtr, newPos);
 404 }
 405
 406 static inline BOOL
 407 TRACKBAR_HasSelection (const TRACKBAR_INFO *infoPtr)
 408 {
 409     return infoPtr->lSelMin != infoPtr->lSelMax;
 410 }
 411
 412 static void
 413 TRACKBAR_CalcSelection (TRACKBAR_INFO *infoPtr)
 414 {
 415     RECT *selection = &infoPtr->rcSelection;
 416     int range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 417     int offsetthumb, height, width;
 418
 419     if (range <= 0) {
 420         SetRectEmpty (selection);
 421     } else {
 422         if (infoPtr->dwStyle & TBS_VERT) {
 423             offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 424             height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - offsetthumb*2;
 425             selection->top    = infoPtr->rcChannel.top + offsetthumb +
 426                 (height*infoPtr->lSelMin)/range;
 427             selection->bottom = infoPtr->rcChannel.top + offsetthumb +
 428                 (height*infoPtr->lSelMax)/range;
 429             selection->left   = infoPtr->rcChannel.left + 3;
 430             selection->right  = infoPtr->rcChannel.right - 3;
 431         } else {
 432             offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 433             width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
 434             selection->left   = infoPtr->rcChannel.left + offsetthumb +
 435                 (width*infoPtr->lSelMin)/range;
 436             selection->right  = infoPtr->rcChannel.left + offsetthumb +
 437                 (width*infoPtr->lSelMax)/range;
 438             selection->top    = infoPtr->rcChannel.top + 3;
 439             selection->bottom = infoPtr->rcChannel.bottom - 3;
 440         }
 441     }
 442
 443     TRACE("selection[%s]\n", wine_dbgstr_rect(selection));
 444 }
 445
 446 static BOOL
 447 TRACKBAR_AutoPage (TRACKBAR_INFO *infoPtr, POINT clickPoint)
 448 {
 449     LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
 450     LONG prevPos = infoPtr->lPos;
 451
 452     TRACE("x=%d, y=%d, dir=%d\n", clickPoint.x, clickPoint.y, dir);
 453
 454     if (dir > 0 && (infoPtr->flags & TB_AUTO_PAGE_RIGHT))
 455         TRACKBAR_PageDown(infoPtr);
 456     else if (dir < 0 && (infoPtr->flags & TB_AUTO_PAGE_LEFT))
 457         TRACKBAR_PageUp(infoPtr);
 458     else return FALSE;
 459
 460     infoPtr->flags |= TB_THUMBPOSCHANGED;
 461     TRACKBAR_InvalidateThumbMove (infoPtr, prevPos, infoPtr->lPos);
 462
 463     return TRUE;
 464 }
 465
 466 /* Trackbar drawing code. I like my spaghetti done milanese.  */
 467
 468 static void
 469 TRACKBAR_DrawChannel (const TRACKBAR_INFO *infoPtr, HDC hdc)
 470 {
 471     RECT rcChannel = infoPtr->rcChannel;
 472     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 473
 474     if (theme)
 475     {
 476         DrawThemeBackground (theme, hdc,
 477             (infoPtr->dwStyle & TBS_VERT) ?
 478                 TKP_TRACKVERT : TKP_TRACK, TKS_NORMAL, &rcChannel, 0);
 479     }
 480     else
 481     {
 482         DrawEdge (hdc, &rcChannel, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
 483         if (infoPtr->dwStyle & TBS_ENABLESELRANGE) {             /* fill the channel */
 484             FillRect (hdc, &rcChannel, GetStockObject(WHITE_BRUSH));
 485             if (TRACKBAR_HasSelection(infoPtr))
 486                 FillRect (hdc, &infoPtr->rcSelection, GetSysColorBrush(COLOR_HIGHLIGHT));
 487         }
 488     }
 489 }
 490
 491 static void
 492 TRACKBAR_DrawOneTic (const TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 493 {
 494     int x, y, ox, oy, range, side, indent = 0, len = 3;
 495     int offsetthumb;
 496     RECT rcTics;
 497
 498     if (flags & TBS_VERT) {
 499         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 500         rcTics.left = infoPtr->rcThumb.left - 2;
 501         rcTics.right = infoPtr->rcThumb.right + 2;
 502         rcTics.top    = infoPtr->rcChannel.top + offsetthumb + 1;
 503         rcTics.bottom = infoPtr->rcChannel.bottom - offsetthumb;
 504     } else {
 505         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 506         rcTics.left   = infoPtr->rcChannel.left + offsetthumb + 1;
 507         rcTics.right  = infoPtr->rcChannel.right - offsetthumb;
 508         rcTics.top = infoPtr->rcThumb.top - 2;
 509         rcTics.bottom = infoPtr->rcThumb.bottom + 2;
 510     }
 511
 512     if (flags & (TBS_TOP | TBS_LEFT)) {
 513         x = rcTics.left;
 514         y = rcTics.top;
 515         side = -1;
 516     } else {
 517         x = rcTics.right;
 518         y = rcTics.bottom;
 519         side = 1;
 520     }
 521
 522     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 523     if (range <= 0)
 524       range = 1; /* to avoid division by zero */
 525
 526     if (flags & TIC_SELECTIONMARK) {
 527         indent = (flags & TIC_SELECTIONMARKMIN) ? -1 : 1;
 528     } else if (flags & TIC_EDGE) {
 529         len++;
 530     }
 531
 532     if (flags & TBS_VERT) {
 533         int height = rcTics.bottom - rcTics.top;
 534         y = rcTics.top + (height*(ticPos - infoPtr->lRangeMin))/range;
 535     } else {
 536         int width = rcTics.right - rcTics.left;
 537         x = rcTics.left + (width*(ticPos - infoPtr->lRangeMin))/range;
 538     }
 539
 540     ox = x;
 541     oy = y;
 542     MoveToEx(hdc, x, y, 0);
 543     if (flags & TBS_VERT) x += len * side;
 544     else y += len * side;
 545     LineTo(hdc, x, y);
 546
 547     if (flags & TIC_SELECTIONMARK) {
 548         if (flags & TBS_VERT) {
 549             x -= side;
 550         } else {
 551             y -= side;
 552         }
 553         MoveToEx(hdc, x, y, 0);
 554         if (flags & TBS_VERT) {
 555             y += 2 * indent;
 556         } else {
 557             x += 2 * indent;
 558         }
 559
 560         LineTo(hdc, x, y);
 561         LineTo(hdc, ox, oy);
 562     }
 563 }
 564
 565
 566 static inline void
 567 TRACKBAR_DrawTic (const TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 568 {
 569     if ((flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 570         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags | TBS_LEFT);
 571
 572     if (!(flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 573         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags & ~TBS_LEFT);
 574 }
 575
 576 static void
 577 TRACKBAR_DrawTics (const TRACKBAR_INFO *infoPtr, HDC hdc)
 578 {
 579     unsigned int i;
 580     int ticFlags = infoPtr->dwStyle & 0x0f;
 581     LOGPEN ticPen = { PS_SOLID, {1, 0}, GetSysColor (COLOR_3DDKSHADOW) };
 582     HPEN hOldPen, hTicPen;
 583     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 584
 585     if (theme)
 586     {
 587         int part = (infoPtr->dwStyle & TBS_VERT) ? TKP_TICSVERT : TKP_TICS;
 588         GetThemeColor (theme, part, TSS_NORMAL, TMT_COLOR, &ticPen.lopnColor);
 589     }
 590     /* create the pen to draw the tics with */
 591     hTicPen = CreatePenIndirect(&ticPen);
 592     hOldPen = hTicPen ? SelectObject(hdc, hTicPen) : 0;
 593
 594     /* actually draw the tics */
 595     for (i=0; i<infoPtr->uNumTics; i++)
 596         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->tics[i], ticFlags);
 597
 598     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMin, ticFlags | TIC_EDGE);
 599     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMax, ticFlags | TIC_EDGE);
 600
 601     if ((infoPtr->dwStyle & TBS_ENABLESELRANGE) && TRACKBAR_HasSelection(infoPtr)) {
 602         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMin,
 603                           ticFlags | TIC_SELECTIONMARKMIN);
 604         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMax,
 605                           ticFlags | TIC_SELECTIONMARKMAX);
 606     }
 607
 608     /* clean up the pen, if we created one */
 609     if (hTicPen) {
 610         SelectObject(hdc, hOldPen);
 611         DeleteObject(hTicPen);
 612     }
 613 }
 614
 615 static void
 616 TRACKBAR_DrawThumb (const TRACKBAR_INFO *infoPtr, HDC hdc)
 617 {
 618     HBRUSH oldbr;
 619     HPEN  oldpen;
 620     RECT thumb = infoPtr->rcThumb;
 621     int BlackUntil = 3;
 622     int PointCount = 6;
 623     POINT points[6];
 624     int fillClr;
 625     int PointDepth;
 626     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 627
 628     if (theme)
 629     {
 630         int partId;
 631         int stateId;
 632         if (infoPtr->dwStyle & TBS_BOTH)
 633             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBVERT : TKP_THUMB;
 634         else if (infoPtr->dwStyle & TBS_LEFT)
 635             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBLEFT : TKP_THUMBTOP;
 636         else
 637             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBRIGHT : TKP_THUMBBOTTOM;
 638
 639         if (infoPtr->dwStyle & WS_DISABLED)
 640             stateId = TUS_DISABLED;
 641         else if (infoPtr->flags & TB_DRAG_MODE)
 642             stateId = TUS_PRESSED;
 643         else if (infoPtr->flags & TB_THUMB_HOT)
 644             stateId = TUS_HOT;
 645         else
 646             stateId = TUS_NORMAL;
 647
 648         DrawThemeBackground (theme, hdc, partId, stateId, &thumb, 0);
 649
 650         return;
 651     }
 652
 653     fillClr = infoPtr->flags & TB_DRAG_MODE ? COLOR_BTNHILIGHT : COLOR_BTNFACE;
 654     oldbr = SelectObject (hdc, GetSysColorBrush(fillClr));
 655     SetPolyFillMode (hdc, WINDING);
 656
 657     if (infoPtr->dwStyle & TBS_BOTH)
 658     {
 659        points[0].x=thumb.right;
 660        points[0].y=thumb.top;
 661        points[1].x=thumb.right;
 662        points[1].y=thumb.bottom;
 663        points[2].x=thumb.left;
 664        points[2].y=thumb.bottom;
 665        points[3].x=thumb.left;
 666        points[3].y=thumb.top;
 667        points[4].x=points[0].x;
 668        points[4].y=points[0].y;
 669        PointCount = 5;
 670        BlackUntil = 3;
 671     }
 672     else
 673     {
 674         if (infoPtr->dwStyle & TBS_VERT)
 675         {
 676           PointDepth = (thumb.bottom - thumb.top) / 2;
 677           if (infoPtr->dwStyle & TBS_LEFT)
 678           {
 679             points[0].x=thumb.right;
 680             points[0].y=thumb.top;
 681             points[1].x=thumb.right;
 682             points[1].y=thumb.bottom;
 683             points[2].x=thumb.left + PointDepth;
 684             points[2].y=thumb.bottom;
 685             points[3].x=thumb.left;
 686             points[3].y=(thumb.bottom - thumb.top) / 2 + thumb.top + 1;
 687             points[4].x=thumb.left + PointDepth;
 688             points[4].y=thumb.top;
 689             points[5].x=points[0].x;
 690             points[5].y=points[0].y;
 691             BlackUntil = 4;
 692           }
 693           else
 694           {
 695             points[0].x=thumb.right;
 696             points[0].y=(thumb.bottom - thumb.top) / 2 + thumb.top + 1;
 697             points[1].x=thumb.right - PointDepth;
 698             points[1].y=thumb.bottom;
 699             points[2].x=thumb.left;
 700             points[2].y=thumb.bottom;
 701             points[3].x=thumb.left;
 702             points[3].y=thumb.top;
 703             points[4].x=thumb.right - PointDepth;
 704             points[4].y=thumb.top;
 705             points[5].x=points[0].x;
 706             points[5].y=points[0].y;
 707           }
 708         }
 709         else
 710         {
 711           PointDepth = (thumb.right - thumb.left) / 2;
 712           if (infoPtr->dwStyle & TBS_TOP)
 713           {
 714             points[0].x=(thumb.right - thumb.left) / 2 + thumb.left + 1;
 715             points[0].y=thumb.top;
 716             points[1].x=thumb.right;
 717             points[1].y=thumb.top + PointDepth;
 718             points[2].x=thumb.right;
 719             points[2].y=thumb.bottom;
 720             points[3].x=thumb.left;
 721             points[3].y=thumb.bottom;
 722             points[4].x=thumb.left;
 723             points[4].y=thumb.top + PointDepth;
 724             points[5].x=points[0].x;
 725             points[5].y=points[0].y;
 726             BlackUntil = 4;
 727           }
 728           else
 729           {
 730             points[0].x=thumb.right;
 731             points[0].y=thumb.top;
 732             points[1].x=thumb.right;
 733             points[1].y=thumb.bottom - PointDepth;
 734             points[2].x=(thumb.right - thumb.left) / 2 + thumb.left + 1;
 735             points[2].y=thumb.bottom;
 736             points[3].x=thumb.left;
 737             points[3].y=thumb.bottom - PointDepth;
 738             points[4].x=thumb.left;
 739             points[4].y=thumb.top;
 740             points[5].x=points[0].x;
 741             points[5].y=points[0].y;
 742           }
 743         }
 744
 745     }
 746
 747     /* Draw the thumb now */
 748     Polygon (hdc, points, PointCount);
 749     oldpen = SelectObject(hdc, GetStockObject(BLACK_PEN));
 750     Polyline(hdc,points, BlackUntil);
 751     SelectObject(hdc, GetStockObject(WHITE_PEN));
 752     Polyline(hdc, &points[BlackUntil-1], PointCount+1-BlackUntil);
 753     SelectObject(hdc, oldpen);
 754     SelectObject(hdc, oldbr);
 755 }
 756
 757
 758 static inline void
 759 TRACKBAR_ActivateToolTip (const TRACKBAR_INFO *infoPtr, BOOL fShow)
 760 {
 761     TTTOOLINFOW ti;
 762
 763     if (!infoPtr->hwndToolTip) return;
 764
 765     ZeroMemory(&ti, sizeof(ti));
 766     ti.cbSize = sizeof(ti);
 767     ti.hwnd   = infoPtr->hwndSelf;
 768
 769     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKACTIVATE, fShow, (LPARAM)&ti);
 770 }
 771
 772
 773 static void
 774 TRACKBAR_UpdateToolTip (const TRACKBAR_INFO *infoPtr)
 775 {
 776     WCHAR buf[80];
 777     static const WCHAR fmt[] = { '%', 'l', 'd', 0 };
 778     TTTOOLINFOW ti;
 779     POINT pt;
 780     RECT rcClient;
 781     LRESULT size;
 782
 783     if (!infoPtr->hwndToolTip) return;
 784
 785     ZeroMemory(&ti, sizeof(ti));
 786     ti.cbSize = sizeof(ti);
 787     ti.hwnd   = infoPtr->hwndSelf;
 788     ti.uFlags = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
 789
 790     wsprintfW (buf, fmt, infoPtr->lPos);
 791     ti.lpszText = buf;
 792     SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 793
 794     GetClientRect (infoPtr->hwndSelf, &rcClient);
 795     size = SendMessageW (infoPtr->hwndToolTip, TTM_GETBUBBLESIZE, 0, (LPARAM)&ti);
 796     if (infoPtr->dwStyle & TBS_VERT) {
 797         if (infoPtr->fLocation == TBTS_LEFT)
 798             pt.x = 0 - LOWORD(size) - TOOLTIP_OFFSET;
 799         else
 800             pt.x = rcClient.right + TOOLTIP_OFFSET;
 801         pt.y = (infoPtr->rcThumb.top + infoPtr->rcThumb.bottom - HIWORD(size))/2;
 802     } else {
 803         if (infoPtr->fLocation == TBTS_TOP)
 804             pt.y = 0 - HIWORD(size) - TOOLTIP_OFFSET;
 805         else
 806             pt.y = rcClient.bottom + TOOLTIP_OFFSET;
 807         pt.x = (infoPtr->rcThumb.left + infoPtr->rcThumb.right - LOWORD(size))/2;
 808     }
 809     ClientToScreen(infoPtr->hwndSelf, &pt);
 810
 811     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKPOSITION,
 812                   0, MAKELPARAM(pt.x, pt.y));
 813 }
 814
 815
 816 static void
 817 TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdcDst)
 818 {
 819     RECT rcClient;
 820     HDC hdc;
 821     HBITMAP hOldBmp = 0, hOffScreenBmp = 0;
 822     NMCUSTOMDRAW nmcd;
 823     int gcdrf, icdrf;
 824
 825     if (infoPtr->flags & TB_THUMBCHANGED) {
 826         TRACKBAR_UpdateThumb (infoPtr);
 827         if (infoPtr->flags & TB_THUMBSIZECHANGED)
 828             TRACKBAR_CalcChannel (infoPtr);
 829     }
 830     if (infoPtr->flags & TB_SELECTIONCHANGED)
 831         TRACKBAR_CalcSelection (infoPtr);
 832
 833     if (infoPtr->flags & TB_DRAG_MODE)
 834         TRACKBAR_UpdateToolTip (infoPtr);
 835
 836     infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
 837
 838     GetClientRect (infoPtr->hwndSelf, &rcClient);
 839
 840     /* try to render offscreen, if we fail, carrry onscreen */
 841     hdc = CreateCompatibleDC(hdcDst);
 842     if (hdc) {
 843         hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
 844         if (hOffScreenBmp) {
 845             hOldBmp = SelectObject(hdc, hOffScreenBmp);
 846         } else {
 847             DeleteObject(hdc);
 848             hdc = hdcDst;
 849         }
 850     } else {
 851         hdc = hdcDst;
 852     }
 853
 854     ZeroMemory(&nmcd, sizeof(nmcd));
 855     nmcd.hdr.hwndFrom = infoPtr->hwndSelf;
 856     nmcd.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
 857     nmcd.hdr.code = NM_CUSTOMDRAW;
 858     nmcd.hdc = hdc;
 859
 860     /* start the paint cycle */
 861     nmcd.rc = rcClient;
 862     gcdrf = notify_customdraw(infoPtr, &nmcd, CDDS_PREPAINT);
 863     if (gcdrf & CDRF_SKIPDEFAULT) goto cleanup;
 864
 865     /* Erase background */
 866     if (gcdrf == CDRF_DODEFAULT ||
 867         notify_customdraw(infoPtr, &nmcd, CDDS_PREERASE) != CDRF_SKIPDEFAULT) {
 868         if (GetWindowTheme (infoPtr->hwndSelf)) {
 869             DrawThemeParentBackground (infoPtr->hwndSelf, hdc, 0);
 870         }
 871         else
 872             FillRect (hdc, &rcClient, GetSysColorBrush(COLOR_BTNFACE));
 873         if (gcdrf != CDRF_DODEFAULT)
 874             notify_customdraw(infoPtr, &nmcd, CDDS_POSTERASE);
 875     }
 876
 877     /* draw channel */
 878     if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 879         nmcd.dwItemSpec = TBCD_CHANNEL;
 880         nmcd.uItemState = CDIS_DEFAULT;
 881         nmcd.rc = infoPtr->rcChannel;
 882         icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 883     } else icdrf = CDRF_DODEFAULT;
 884     if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 885         TRACKBAR_DrawChannel (infoPtr, hdc);
 886         if (icdrf & CDRF_NOTIFYPOSTPAINT)
 887             notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 888     }
 889
 890
 891     /* draw tics */
 892     if (!(infoPtr->dwStyle & TBS_NOTICKS)) {
 893         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 894             nmcd.dwItemSpec = TBCD_TICS;
 895             nmcd.uItemState = CDIS_DEFAULT;
 896             nmcd.rc = rcClient;
 897             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 898         } else icdrf = CDRF_DODEFAULT;
 899         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 900             TRACKBAR_DrawTics (infoPtr, hdc);
 901             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 902                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 903         }
 904     }
 905
 906     /* draw thumb */
 907     if (!(infoPtr->dwStyle & TBS_NOTHUMB)) {
 908         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 909             nmcd.dwItemSpec = TBCD_THUMB;
 910             nmcd.uItemState = infoPtr->flags & TB_DRAG_MODE ? CDIS_HOT : CDIS_DEFAULT;
 911             nmcd.rc = infoPtr->rcThumb;
 912             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 913         } else icdrf = CDRF_DODEFAULT;
 914         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 915             TRACKBAR_DrawThumb(infoPtr, hdc);
 916             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 917                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 918         }
 919     }
 920
 921     /* draw focus rectangle */
 922     if (infoPtr->bFocussed) {
 923         DrawFocusRect(hdc, &rcClient);
 924     }
 925
 926     /* finish up the painting */
 927     if (gcdrf & CDRF_NOTIFYPOSTPAINT)
 928         notify_customdraw(infoPtr, &nmcd, CDDS_POSTPAINT);
 929
 930 cleanup:
 931     /* cleanup, if we rendered offscreen */
 932     if (hdc != hdcDst) {
 933         BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
 934         SelectObject(hdc, hOldBmp);
 935         DeleteObject(hOffScreenBmp);
 936         DeleteObject(hdc);
 937     }
 938 }
 939
 940
 941 static void
 942 TRACKBAR_AlignBuddies (const TRACKBAR_INFO *infoPtr)
 943 {
 944     HWND hwndParent = GetParent (infoPtr->hwndSelf);
 945     RECT rcSelf, rcBuddy;
 946     INT x, y;
 947
 948     GetWindowRect (infoPtr->hwndSelf, &rcSelf);
 949     MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcSelf, 2);
 950
 951     /* align buddy left or above */
 952     if (infoPtr->hwndBuddyLA) {
 953         GetWindowRect (infoPtr->hwndBuddyLA, &rcBuddy);
 954         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
 955
 956         if (infoPtr->dwStyle & TBS_VERT) {
 957             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
 958                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
 959             y = rcSelf.top - (rcBuddy.bottom - rcBuddy.top);
 960         }
 961         else {
 962             x = rcSelf.left - (rcBuddy.right - rcBuddy.left);
 963             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
 964                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
 965         }
 966
 967         SetWindowPos (infoPtr->hwndBuddyLA, 0, x, y, 0, 0,
 968                       SWP_NOZORDER | SWP_NOSIZE);
 969     }
 970
 971
 972     /* align buddy right or below */
 973     if (infoPtr->hwndBuddyRB) {
 974         GetWindowRect (infoPtr->hwndBuddyRB, &rcBuddy);
 975         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
 976
 977         if (infoPtr->dwStyle & TBS_VERT) {
 978             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
 979                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
 980             y = rcSelf.bottom;
 981         }
 982         else {
 983             x = rcSelf.right;
 984             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
 985                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
 986         }
 987         SetWindowPos (infoPtr->hwndBuddyRB, 0, x, y, 0, 0,
 988                       SWP_NOZORDER | SWP_NOSIZE);
 989     }
 990 }
 991
 992
 993 static LRESULT
 994 TRACKBAR_ClearSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
 995 {
 996     infoPtr->lSelMin = 0;
 997     infoPtr->lSelMax = 0;
 998     infoPtr->flags |= TB_SELECTIONCHANGED;
 999
1000     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1001
1002     return 0;
1003 }
1004
1005
1006 static LRESULT
1007 TRACKBAR_ClearTics (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1008 {
1009     if (infoPtr->tics) {
1010         Free (infoPtr->tics);
1011         infoPtr->tics = NULL;
1012         infoPtr->uNumTics = 0;
1013     }
1014
1015     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1016
1017     return 0;
1018 }
1019
1020
1021 static inline LRESULT
1022 TRACKBAR_GetChannelRect (const TRACKBAR_INFO *infoPtr, LPRECT lprc)
1023 {
1024     if (lprc == NULL) return 0;
1025
1026     lprc->left   = infoPtr->rcChannel.left;
1027     lprc->right  = infoPtr->rcChannel.right;
1028     lprc->bottom = infoPtr->rcChannel.bottom;
1029     lprc->top    = infoPtr->rcChannel.top;
1030
1031     return 0;
1032 }
1033
1034
1035 static inline LONG
1036 TRACKBAR_GetNumTics (const TRACKBAR_INFO *infoPtr)
1037 {
1038     if (infoPtr->dwStyle & TBS_NOTICKS) return 0;
1039
1040     return infoPtr->uNumTics + 2;
1041 }
1042
1043
1044 static int comp_tics (const void *ap, const void *bp)
1045 {
1046     const DWORD a = *(const DWORD *)ap;
1047     const DWORD b = *(const DWORD *)bp;
1048
1049     TRACE("(a=%d, b=%d)\n", a, b);
1050     if (a < b) return -1;
1051     if (a > b) return 1;
1052     return 0;
1053 }
1054
1055
1056 static inline LONG
1057 TRACKBAR_GetTic (const TRACKBAR_INFO *infoPtr, INT iTic)
1058 {
1059     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1060         return -1;
1061
1062     qsort(infoPtr->tics, infoPtr->uNumTics, sizeof(DWORD), comp_tics);
1063     return infoPtr->tics[iTic];
1064 }
1065
1066
1067 static inline LONG
1068 TRACKBAR_GetTicPos (const TRACKBAR_INFO *infoPtr, INT iTic)
1069 {
1070     LONG range, width, pos, tic;
1071     int offsetthumb;
1072
1073     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1074         return -1;
1075
1076     tic   = TRACKBAR_GetTic (infoPtr, iTic);
1077     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
1078     if (range <= 0) range = 1;
1079     offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
1080     width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
1081     pos   = infoPtr->rcChannel.left + offsetthumb + (width * tic) / range;
1082
1083     return pos;
1084 }
1085
1086
1087 static HWND
1088 TRACKBAR_SetBuddy (TRACKBAR_INFO *infoPtr, BOOL fLocation, HWND hwndBuddy)
1089 {
1090     HWND hwndTemp;
1091
1092     if (fLocation) {
1093         /* buddy is left or above */
1094         hwndTemp = infoPtr->hwndBuddyLA;
1095         infoPtr->hwndBuddyLA = hwndBuddy;
1096     }
1097     else {
1098         /* buddy is right or below */
1099         hwndTemp = infoPtr->hwndBuddyRB;
1100         infoPtr->hwndBuddyRB = hwndBuddy;
1101     }
1102
1103     TRACKBAR_AlignBuddies (infoPtr);
1104
1105     return hwndTemp;
1106 }
1107
1108
1109 static inline LONG
1110 TRACKBAR_SetLineSize (TRACKBAR_INFO *infoPtr, LONG lLineSize)
1111 {
1112     LONG lTemp = infoPtr->lLineSize;
1113
1114     infoPtr->lLineSize = lLineSize;
1115
1116     return lTemp;
1117 }
1118
1119
1120 static inline LONG
1121 TRACKBAR_SetPageSize (TRACKBAR_INFO *infoPtr, LONG lPageSize)
1122 {
1123     LONG lTemp = infoPtr->lPageSize;
1124
1125     if (lPageSize != -1)
1126         infoPtr->lPageSize = lPageSize;
1127     else
1128         infoPtr->lPageSize = TB_DEFAULTPAGESIZE;
1129
1130     return lTemp;
1131 }
1132
1133
1134 static inline LRESULT
1135 TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
1136 {
1137     LONG oldPos = infoPtr->lPos;
1138     infoPtr->lPos = lPosition;
1139
1140     if (infoPtr->lPos < infoPtr->lRangeMin)
1141         infoPtr->lPos = infoPtr->lRangeMin;
1142
1143     if (infoPtr->lPos > infoPtr->lRangeMax)
1144         infoPtr->lPos = infoPtr->lRangeMax;
1145     infoPtr->flags |= TB_THUMBPOSCHANGED;
1146
1147     if (fPosition && oldPos != lPosition) TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
1148
1149     return 0;
1150 }
1151
1152
1153 static inline LRESULT
1154 TRACKBAR_SetRange (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lRange)
1155 {
1156     infoPtr->lRangeMin = (SHORT)LOWORD(lRange);
1157     infoPtr->lRangeMax = (SHORT)HIWORD(lRange);
1158
1159     if (infoPtr->lPos < infoPtr->lRangeMin) {
1160         infoPtr->lPos = infoPtr->lRangeMin;
1161         infoPtr->flags |= TB_THUMBPOSCHANGED;
1162     }
1163
1164     if (infoPtr->lPos > infoPtr->lRangeMax) {
1165         infoPtr->lPos = infoPtr->lRangeMax;
1166         infoPtr->flags |= TB_THUMBPOSCHANGED;
1167     }
1168
1169     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1170     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1171
1172     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1173
1174     return 0;
1175 }
1176
1177
1178 static inline LRESULT
1179 TRACKBAR_SetRangeMax (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMax)
1180 {
1181     BOOL changed = infoPtr->lRangeMax != lMax;
1182
1183     infoPtr->lRangeMax = lMax;
1184     if (infoPtr->lPos > infoPtr->lRangeMax) {
1185         infoPtr->lPos = infoPtr->lRangeMax;
1186         infoPtr->flags |= TB_THUMBPOSCHANGED;
1187     }
1188
1189     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1190     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1191
1192     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1193         TRACKBAR_RecalculateTics (infoPtr);
1194
1195     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1196
1197     return 0;
1198 }
1199
1200
1201 static inline LRESULT
1202 TRACKBAR_SetRangeMin (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMin)
1203 {
1204     BOOL changed = infoPtr->lRangeMin != lMin;
1205
1206     infoPtr->lRangeMin = lMin;
1207     if (infoPtr->lPos < infoPtr->lRangeMin) {
1208         infoPtr->lPos = infoPtr->lRangeMin;
1209         infoPtr->flags |= TB_THUMBPOSCHANGED;
1210     }
1211
1212     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1213     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1214
1215     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1216         TRACKBAR_RecalculateTics (infoPtr);
1217
1218     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1219
1220     return 0;
1221 }
1222
1223
1224 static inline LRESULT
1225 TRACKBAR_SetSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lSel)
1226 {
1227     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1228         infoPtr->lSelMin = 0;
1229         infoPtr->lSelMax = 0;
1230         return 0;
1231     }
1232
1233     infoPtr->lSelMin = (SHORT)LOWORD(lSel);
1234     infoPtr->lSelMax = (SHORT)HIWORD(lSel);
1235     infoPtr->flags |= TB_SELECTIONCHANGED;
1236
1237     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1238         infoPtr->lSelMin = infoPtr->lRangeMin;
1239     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1240         infoPtr->lSelMax = infoPtr->lRangeMax;
1241
1242     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1243
1244     return 0;
1245 }
1246
1247
1248 static inline LRESULT
1249 TRACKBAR_SetSelEnd (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lEnd)
1250 {
1251     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1252         infoPtr->lSelMax = 0;
1253         return 0;
1254     }
1255
1256     infoPtr->lSelMax = lEnd;
1257     infoPtr->flags |= TB_SELECTIONCHANGED;
1258
1259     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1260         infoPtr->lSelMax = infoPtr->lRangeMax;
1261
1262     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1263
1264     return 0;
1265 }
1266
1267
1268 static inline LRESULT
1269 TRACKBAR_SetSelStart (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lStart)
1270 {
1271     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1272         infoPtr->lSelMin = 0;
1273         return 0;
1274     }
1275
1276     infoPtr->lSelMin = lStart;
1277     infoPtr->flags  |=TB_SELECTIONCHANGED;
1278
1279     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1280         infoPtr->lSelMin = infoPtr->lRangeMin;
1281
1282     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1283
1284     return 0;
1285 }
1286
1287
1288 static inline LRESULT
1289 TRACKBAR_SetThumbLength (TRACKBAR_INFO *infoPtr, UINT iLength)
1290 {
1291     if (infoPtr->dwStyle & TBS_FIXEDLENGTH) {
1292         infoPtr->uThumbLen = iLength;
1293         infoPtr->flags |= TB_THUMBSIZECHANGED;
1294         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1295     }
1296
1297     return 0;
1298 }
1299
1300
1301 static inline LRESULT
1302 TRACKBAR_SetTic (TRACKBAR_INFO *infoPtr, LONG lPos)
1303 {
1304     if ((lPos < infoPtr->lRangeMin) || (lPos> infoPtr->lRangeMax))
1305         return FALSE;
1306
1307     TRACE("lPos=%d\n", lPos);
1308
1309     infoPtr->uNumTics++;
1310     infoPtr->tics=ReAlloc( infoPtr->tics,
1311                                     (infoPtr->uNumTics)*sizeof (DWORD));
1312     if (!infoPtr->tics) {
1313         infoPtr->uNumTics = 0;
1314         notify(infoPtr, NM_OUTOFMEMORY);
1315         return FALSE;
1316     }
1317     infoPtr->tics[infoPtr->uNumTics-1] = lPos;
1318
1319     TRACKBAR_InvalidateAll(infoPtr);
1320
1321     return TRUE;
1322 }
1323
1324
1325 static inline LRESULT
1326 TRACKBAR_SetTicFreq (TRACKBAR_INFO *infoPtr, WORD wFreq)
1327 {
1328     if (infoPtr->dwStyle & TBS_AUTOTICKS) {
1329         infoPtr->uTicFreq = wFreq;
1330         TRACKBAR_RecalculateTics (infoPtr);
1331         TRACKBAR_InvalidateAll(infoPtr);
1332     }
1333
1334     return 0;
1335 }
1336
1337
1338 static inline INT
1339 TRACKBAR_SetTipSide (TRACKBAR_INFO *infoPtr, INT fLocation)
1340 {
1341     INT fTemp = infoPtr->fLocation;
1342
1343     infoPtr->fLocation = fLocation;
1344
1345     return fTemp;
1346 }
1347
1348
1349 static inline LRESULT
1350 TRACKBAR_SetToolTips (TRACKBAR_INFO *infoPtr, HWND hwndTT)
1351 {
1352     infoPtr->hwndToolTip = hwndTT;
1353
1354     return 0;
1355 }
1356
1357
1358 static inline BOOL
1359 TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
1360 {
1361     BOOL bTemp = infoPtr->bUnicode;
1362
1363     infoPtr->bUnicode = fUnicode;
1364
1365     return bTemp;
1366 }
1367
1368
1369 static LRESULT
1370 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
1371 {
1372     RECT rect;
1373     int clientWidth, clientMetric;
1374
1375     /* initial thumb length */
1376     clientMetric = (infoPtr->dwStyle & TBS_ENABLESELRANGE) ? 23 : 21;
1377     GetClientRect(infoPtr->hwndSelf,&rect);
1378     if (infoPtr->dwStyle & TBS_VERT) {
1379         clientWidth = rect.right - rect.left;
1380     } else {
1381         clientWidth = rect.bottom - rect.top;
1382     }
1383     if (clientWidth >= clientMetric)
1384         infoPtr->uThumbLen = clientMetric;
1385     else
1386         infoPtr->uThumbLen = clientWidth > 9 ? clientWidth - 6 : 4;
1387
1388     TRACKBAR_CalcChannel (infoPtr);
1389     TRACKBAR_UpdateThumb (infoPtr);
1390     infoPtr->flags &= ~TB_SELECTIONCHANGED;
1391
1392     return 0;
1393 }
1394
1395
1396 static LRESULT
1397 TRACKBAR_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
1398 {
1399     TRACKBAR_INFO *infoPtr;
1400
1401     infoPtr = Alloc (sizeof(TRACKBAR_INFO));
1402     if (!infoPtr) return -1;
1403     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1404
1405     /* set default values */
1406     infoPtr->hwndSelf  = hwnd;
1407     infoPtr->dwStyle   = lpcs->style;
1408     infoPtr->lRangeMin = 0;
1409     infoPtr->lRangeMax = 100;
1410     infoPtr->lLineSize = 1;
1411     infoPtr->lPageSize = TB_DEFAULTPAGESIZE;
1412     infoPtr->lSelMin   = 0;
1413     infoPtr->lSelMax   = 0;
1414     infoPtr->lPos      = 0;
1415     infoPtr->fLocation = TBTS_TOP;
1416     infoPtr->uNumTics  = 0;    /* start and end tic are not included in count*/
1417     infoPtr->uTicFreq  = 1;
1418     infoPtr->tics      = NULL;
1419     infoPtr->hwndNotify= lpcs->hwndParent;
1420
1421     TRACKBAR_InitializeThumb (infoPtr);
1422
1423     /* Create tooltip control */
1424     if (infoPtr->dwStyle & TBS_TOOLTIPS) {
1425
1426         infoPtr->hwndToolTip =
1427             CreateWindowExW (0, TOOLTIPS_CLASSW, NULL, WS_POPUP,
1428                              CW_USEDEFAULT, CW_USEDEFAULT,
1429                              CW_USEDEFAULT, CW_USEDEFAULT,
1430                              hwnd, 0, 0, 0);
1431
1432         if (infoPtr->hwndToolTip) {
1433             TTTOOLINFOW ti;
1434             ZeroMemory (&ti, sizeof(ti));
1435             ti.cbSize   = sizeof(ti);
1436             ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
1437             ti.hwnd     = hwnd;
1438
1439             SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
1440          }
1441     }
1442
1443     OpenThemeData (hwnd, themeClass);
1444
1445     return 0;
1446 }
1447
1448
1449 static LRESULT
1450 TRACKBAR_Destroy (TRACKBAR_INFO *infoPtr)
1451 {
1452     /* delete tooltip control */
1453     if (infoPtr->hwndToolTip)
1454         DestroyWindow (infoPtr->hwndToolTip);
1455
1456     Free (infoPtr->tics);
1457     infoPtr->tics = NULL;
1458
1459     SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
1460     CloseThemeData (GetWindowTheme (infoPtr->hwndSelf));
1461     Free (infoPtr);
1462
1463     return 0;
1464 }
1465
1466
1467 static LRESULT
1468 TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr)
1469 {
1470     TRACE("\n");
1471     infoPtr->bFocussed = FALSE;
1472     TRACKBAR_InvalidateAll(infoPtr);
1473
1474     return 0;
1475 }
1476
1477 static LRESULT
1478 TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, INT x, INT y)
1479 {
1480     POINT clickPoint;
1481
1482     clickPoint.x = x;
1483     clickPoint.y = y;
1484
1485     SetFocus(infoPtr->hwndSelf);
1486
1487     if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
1488         infoPtr->flags |= TB_DRAG_MODE;
1489         SetCapture (infoPtr->hwndSelf);
1490         TRACKBAR_UpdateToolTip (infoPtr);
1491         TRACKBAR_ActivateToolTip (infoPtr, TRUE);
1492         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1493     } else {
1494         LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
1495         if (dir == 0) return 0;
1496         infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
1497         TRACKBAR_AutoPage (infoPtr, clickPoint);
1498         SetCapture (infoPtr->hwndSelf);
1499         SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
1500     }
1501
1502     return 0;
1503 }
1504
1505
1506 static LRESULT
1507 TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr)
1508 {
1509     if (infoPtr->flags & TB_DRAG_MODE) {
1510         notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
1511         notify_with_scroll (infoPtr, TB_ENDTRACK);
1512         infoPtr->flags &= ~TB_DRAG_MODE;
1513         ReleaseCapture ();
1514         notify(infoPtr, NM_RELEASEDCAPTURE);
1515         TRACKBAR_ActivateToolTip(infoPtr, FALSE);
1516         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1517     }
1518     if (infoPtr->flags & TB_AUTO_PAGE) {
1519         KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
1520         infoPtr->flags &= ~TB_AUTO_PAGE;
1521         notify_with_scroll (infoPtr, TB_ENDTRACK);
1522         ReleaseCapture ();
1523         notify(infoPtr, NM_RELEASEDCAPTURE);
1524     }
1525
1526     return 0;
1527 }
1528
1529
1530 static LRESULT
1531 TRACKBAR_CaptureChanged (const TRACKBAR_INFO *infoPtr)
1532 {
1533     notify_with_scroll (infoPtr, TB_ENDTRACK);
1534     return 0;
1535 }
1536
1537
1538 static LRESULT
1539 TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
1540 {
1541     if (hdc) {
1542         TRACKBAR_Refresh(infoPtr, hdc);
1543     } else {
1544         PAINTSTRUCT ps;
1545         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
1546         TRACKBAR_Refresh (infoPtr, hdc);
1547         EndPaint (infoPtr->hwndSelf, &ps);
1548     }
1549
1550     return 0;
1551 }
1552
1553
1554 static LRESULT
1555 TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr)
1556 {
1557     TRACE("\n");
1558     infoPtr->bFocussed = TRUE;
1559     TRACKBAR_InvalidateAll(infoPtr);
1560
1561     return 0;
1562 }
1563
1564
1565 static LRESULT
1566 TRACKBAR_Size (TRACKBAR_INFO *infoPtr)
1567 {
1568     TRACKBAR_CalcChannel (infoPtr);
1569     TRACKBAR_UpdateThumb (infoPtr);
1570     TRACKBAR_AlignBuddies (infoPtr);
1571
1572     return 0;
1573 }
1574
1575 static LRESULT
1576 TRACKBAR_StyleChanged (TRACKBAR_INFO *infoPtr, WPARAM wStyleType,
1577                        const STYLESTRUCT *lpss)
1578 {
1579     if (wStyleType != GWL_STYLE) return 0;
1580
1581     infoPtr->dwStyle = lpss->styleNew;
1582
1583     return 0;
1584 }
1585
1586 static LRESULT
1587 TRACKBAR_Timer (TRACKBAR_INFO *infoPtr)
1588 {
1589     if (infoPtr->flags & TB_AUTO_PAGE) {
1590         POINT pt;
1591         if (GetCursorPos(&pt))
1592             if (ScreenToClient(infoPtr->hwndSelf, &pt))
1593                 TRACKBAR_AutoPage(infoPtr, pt);
1594     }
1595     return 0;
1596 }
1597
1598
1599 /* update theme after a WM_THEMECHANGED message */
1600 static LRESULT theme_changed (const TRACKBAR_INFO* infoPtr)
1601 {
1602     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
1603     CloseThemeData (theme);
1604     OpenThemeData (infoPtr->hwndSelf, themeClass);
1605     return 0;
1606 }
1607
1608
1609 static LRESULT
1610 TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, INT x, INT y)
1611 {
1612     INT clickPlace = (infoPtr->dwStyle & TBS_VERT) ? y : x;
1613     LONG dragPos, oldPos = infoPtr->lPos;
1614
1615     TRACE("(x=%d. y=%d)\n", x, y);
1616
1617     if (infoPtr->flags & TB_AUTO_PAGE) {
1618         POINT pt;
1619         pt.x = x;
1620         pt.y = y;
1621         TRACKBAR_AutoPage (infoPtr, pt);
1622         return TRUE;
1623     }
1624
1625     if (!(infoPtr->flags & TB_DRAG_MODE))
1626     {
1627         if (GetWindowTheme (infoPtr->hwndSelf))
1628         {
1629             DWORD oldFlags = infoPtr->flags;
1630             POINT pt;
1631             pt.x = x;
1632             pt.y = y;
1633             if (PtInRect (&infoPtr->rcThumb, pt))
1634             {
1635                 TRACKMOUSEEVENT tme;
1636                 tme.cbSize = sizeof( tme );
1637                 tme.dwFlags = TME_LEAVE;
1638                 tme.hwndTrack = infoPtr->hwndSelf;
1639                 TrackMouseEvent( &tme );
1640                 infoPtr->flags |= TB_THUMB_HOT;
1641             }
1642             else
1643             {
1644                 TRACKMOUSEEVENT tme;
1645                 tme.cbSize = sizeof( tme );
1646                 tme.dwFlags = TME_CANCEL;
1647                 tme.hwndTrack = infoPtr->hwndSelf;
1648                 TrackMouseEvent( &tme );
1649                 infoPtr->flags &= ~TB_THUMB_HOT;
1650             }
1651             if (oldFlags != infoPtr->flags) InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1652         }
1653         return TRUE;
1654     }
1655
1656     dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace);
1657
1658     if (dragPos == oldPos) return TRUE;
1659
1660     infoPtr->lPos = dragPos;
1661
1662     infoPtr->flags |= TB_THUMBPOSCHANGED;
1663     notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));
1664
1665
1666     TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
1667     UpdateWindow (infoPtr->hwndSelf);
1668
1669     return TRUE;
1670 }
1671
1672 static BOOL
1673 TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey)
1674 {
1675     BOOL downIsLeft = infoPtr->dwStyle & TBS_DOWNISLEFT;
1676     BOOL vert = infoPtr->dwStyle & TBS_VERT;
1677     LONG pos = infoPtr->lPos;
1678
1679     TRACE("%x\n", nVirtKey);
1680
1681     switch (nVirtKey) {
1682     case VK_UP:
1683         if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1684         else TRACKBAR_LineUp(infoPtr);
1685         break;
1686     case VK_LEFT:
1687         if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1688         else TRACKBAR_LineUp(infoPtr);
1689         break;
1690     case VK_DOWN:
1691         if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1692         else TRACKBAR_LineDown(infoPtr);
1693         break;
1694     case VK_RIGHT:
1695         if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1696         else TRACKBAR_LineDown(infoPtr);
1697         break;
1698     case VK_NEXT:
1699         if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
1700         else TRACKBAR_PageDown(infoPtr);
1701         break;
1702     case VK_PRIOR:
1703         if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
1704         else TRACKBAR_PageUp(infoPtr);
1705         break;
1706     case VK_HOME:
1707         if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
1708         infoPtr->lPos = infoPtr->lRangeMin;
1709         notify_with_scroll (infoPtr, TB_TOP);
1710         break;
1711     case VK_END:
1712         if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
1713         infoPtr->lPos = infoPtr->lRangeMax;
1714         notify_with_scroll (infoPtr, TB_BOTTOM);
1715         break;
1716     }
1717
1718     if (pos != infoPtr->lPos) {
1719         infoPtr->flags |=TB_THUMBPOSCHANGED;
1720         TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
1721     }
1722
1723     return TRUE;
1724 }
1725
1726
1727 static inline BOOL
1728 TRACKBAR_KeyUp (const TRACKBAR_INFO *infoPtr, INT nVirtKey)
1729 {
1730     switch (nVirtKey) {
1731     case VK_LEFT:
1732     case VK_UP:
1733     case VK_RIGHT:
1734     case VK_DOWN:
1735     case VK_NEXT:
1736     case VK_PRIOR:
1737     case VK_HOME:
1738     case VK_END:
1739         notify_with_scroll (infoPtr, TB_ENDTRACK);
1740     }
1741     return TRUE;
1742 }
1743
1744
1745 static LRESULT WINAPI
1746 TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1747 {
1748     TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);
1749
1750     TRACE("hwnd=%p msg=%x wparam=%lx lparam=%lx\n", hwnd, uMsg, wParam, lParam);
1751
1752     if (!infoPtr && (uMsg != WM_CREATE))
1753         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1754
1755     switch (uMsg)
1756     {
1757     case TBM_CLEARSEL:
1758         return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);
1759
1760     case TBM_CLEARTICS:
1761         return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);
1762
1763     case TBM_GETBUDDY:
1764         return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);
1765
1766     case TBM_GETCHANNELRECT:
1767         return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);
1768
1769     case TBM_GETLINESIZE:
1770         return infoPtr->lLineSize;
1771
1772     case TBM_GETNUMTICS:
1773         return TRACKBAR_GetNumTics (infoPtr);
1774
1775     case TBM_GETPAGESIZE:
1776         return infoPtr->lPageSize;
1777
1778     case TBM_GETPOS:
1779         return infoPtr->lPos;
1780
1781     case TBM_GETPTICS:
1782         return (LRESULT)infoPtr->tics;
1783
1784     case TBM_GETRANGEMAX:
1785         return infoPtr->lRangeMax;
1786
1787     case TBM_GETRANGEMIN:
1788         return infoPtr->lRangeMin;
1789
1790     case TBM_GETSELEND:
1791         return infoPtr->lSelMax;
1792
1793     case TBM_GETSELSTART:
1794         return infoPtr->lSelMin;
1795
1796     case TBM_GETTHUMBLENGTH:
1797         return infoPtr->uThumbLen;
1798
1799     case TBM_GETTHUMBRECT:
1800         return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);
1801
1802     case TBM_GETTIC:
1803         return TRACKBAR_GetTic (infoPtr, (INT)wParam);
1804
1805     case TBM_GETTICPOS:
1806         return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);
1807
1808     case TBM_GETTOOLTIPS:
1809         return (LRESULT)infoPtr->hwndToolTip;
1810
1811     case TBM_GETUNICODEFORMAT:
1812         return infoPtr->bUnicode;
1813
1814     case TBM_SETBUDDY:
1815         return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);
1816
1817     case TBM_SETLINESIZE:
1818         return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);
1819
1820     case TBM_SETPAGESIZE:
1821         return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);
1822
1823     case TBM_SETPOS:
1824         return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);
1825
1826     case TBM_SETRANGE:
1827         return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);
1828
1829     case TBM_SETRANGEMAX:
1830         return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);
1831
1832     case TBM_SETRANGEMIN:
1833         return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);
1834
1835     case TBM_SETSEL:
1836         return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);
1837
1838     case TBM_SETSELEND:
1839         return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);
1840
1841     case TBM_SETSELSTART:
1842         return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);
1843
1844     case TBM_SETTHUMBLENGTH:
1845         return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);
1846
1847     case TBM_SETTIC:
1848         return TRACKBAR_SetTic (infoPtr, (LONG)lParam);
1849
1850     case TBM_SETTICFREQ:
1851         return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);
1852
1853     case TBM_SETTIPSIDE:
1854         return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);
1855
1856     case TBM_SETTOOLTIPS:
1857         return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);
1858
1859     case TBM_SETUNICODEFORMAT:
1860         return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);
1861
1862
1863     case WM_CAPTURECHANGED:
1864         return TRACKBAR_CaptureChanged (infoPtr);
1865
1866     case WM_CREATE:
1867         return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);
1868
1869     case WM_DESTROY:
1870         return TRACKBAR_Destroy (infoPtr);
1871
1872 /*      case WM_ENABLE: */
1873
1874     case WM_ERASEBKGND:
1875         return 0;
1876
1877     case WM_GETDLGCODE:
1878         return DLGC_WANTARROWS;
1879
1880     case WM_KEYDOWN:
1881         return TRACKBAR_KeyDown (infoPtr, (INT)wParam);
1882
1883     case WM_KEYUP:
1884         return TRACKBAR_KeyUp (infoPtr, (INT)wParam);
1885
1886     case WM_KILLFOCUS:
1887         return TRACKBAR_KillFocus (infoPtr);
1888
1889     case WM_LBUTTONDOWN:
1890         return TRACKBAR_LButtonDown (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
1891
1892     case WM_LBUTTONUP:
1893         return TRACKBAR_LButtonUp (infoPtr);
1894
1895     case WM_MOUSELEAVE:
1896         infoPtr->flags &= ~TB_THUMB_HOT;
1897         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1898         return 0;
1899
1900     case WM_MOUSEMOVE:
1901         return TRACKBAR_MouseMove (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
1902
1903     case WM_PRINTCLIENT:
1904     case WM_PAINT:
1905         return TRACKBAR_Paint (infoPtr, (HDC)wParam);
1906
1907     case WM_SETFOCUS:
1908         return TRACKBAR_SetFocus (infoPtr);
1909
1910     case WM_SIZE:
1911         return TRACKBAR_Size (infoPtr);
1912
1913     case WM_STYLECHANGED:
1914         return TRACKBAR_StyleChanged (infoPtr, wParam, (LPSTYLESTRUCT)lParam);
1915
1916     case WM_THEMECHANGED:
1917         return theme_changed (infoPtr);
1918
1919     case WM_TIMER:
1920         return TRACKBAR_Timer (infoPtr);
1921
1922     case WM_WININICHANGE:
1923         return TRACKBAR_InitializeThumb (infoPtr);
1924
1925     default:
1926         if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
1927             ERR("unknown msg %04x wp=%08lx lp=%08lx\n", uMsg, wParam, lParam);
1928         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1929     }
1930 }
1931
1932
1933 void TRACKBAR_Register (void)
1934 {
1935     WNDCLASSW wndClass;
1936
1937     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
1938     wndClass.style         = CS_GLOBALCLASS;
1939     wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
1940     wndClass.cbClsExtra    = 0;
1941     wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
1942     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
1943     wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
1944     wndClass.lpszClassName = TRACKBAR_CLASSW;
1945
1946     RegisterClassW (&wndClass);
1947 }
1948
1949
1950 void TRACKBAR_Unregister (void)
1951 {
1952     UnregisterClassW (TRACKBAR_CLASSW, NULL);
1953 }