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