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 #include <math.h>
  38
  39 #include "windef.h"
  40 #include "winbase.h"
  41 #include "wingdi.h"
  42 #include "winuser.h"
  43 #include "winnls.h"
  44 #include "commctrl.h"
  45 #include "uxtheme.h"
  46 #include "vssym32.h"
  47 #include "wine/debug.h"
  48
  49 #include "comctl32.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(trackbar);
  52
  53 typedef struct
  54 {
  55     HWND hwndSelf;
  56     DWORD dwStyle;
  57     LONG lRangeMin;
  58     LONG lRangeMax;
  59     LONG lLineSize;
  60     LONG lPageSize;
  61     LONG lSelMin;
  62     LONG lSelMax;
  63     LONG lPos;
  64     UINT uThumbLen;
  65     UINT uNumTics;
  66     UINT uTicFreq;
  67     HWND hwndNotify;
  68     HWND hwndToolTip;
  69     HWND hwndBuddyLA;
  70     HWND hwndBuddyRB;
  71     INT  fLocation;
  72     INT  flags;
  73     BOOL bUnicode;
  74     BOOL bFocussed;
  75     RECT rcChannel;
  76     RECT rcSelection;
  77     RECT rcThumb;
  78     LPLONG tics;
  79 } TRACKBAR_INFO;
  80
  81 #define TB_REFRESH_TIMER        1
  82 #define TB_REFRESH_DELAY        500
  83
  84 #define TOOLTIP_OFFSET          2     /* distance from ctrl edge to tooltip */
  85
  86 #define TB_DEFAULTPAGESIZE      20
  87
  88 /* Used by TRACKBAR_Refresh to find out which parts of the control
  89    need to be recalculated */
  90
  91 #define TB_THUMBPOSCHANGED      1
  92 #define TB_THUMBSIZECHANGED     2
  93 #define TB_THUMBCHANGED         (TB_THUMBPOSCHANGED | TB_THUMBSIZECHANGED)
  94 #define TB_SELECTIONCHANGED     4
  95 #define TB_DRAG_MODE            8     /* we're dragging the slider */
  96 #define TB_AUTO_PAGE_LEFT       16
  97 #define TB_AUTO_PAGE_RIGHT      32
  98 #define TB_AUTO_PAGE            (TB_AUTO_PAGE_LEFT | TB_AUTO_PAGE_RIGHT)
  99 #define TB_THUMB_HOT            64    /* mouse hovers above thumb */
 100
 101 /* helper defines for TRACKBAR_DrawTic */
 102 #define TIC_EDGE                0x20
 103 #define TIC_SELECTIONMARKMAX    0x80
 104 #define TIC_SELECTIONMARKMIN    0x100
 105 #define TIC_SELECTIONMARK       (TIC_SELECTIONMARKMAX | TIC_SELECTIONMARKMIN)
 106
 107 static const WCHAR themeClass[] = { 'T','r','a','c','k','b','a','r',0 };
 108
 109 static inline int
 110 notify_customdraw (const TRACKBAR_INFO *infoPtr, NMCUSTOMDRAW *pnmcd, int stage)
 111 {
 112     pnmcd->dwDrawStage = stage;
 113     return SendMessageW (infoPtr->hwndNotify, WM_NOTIFY,
 114                          pnmcd->hdr.idFrom, (LPARAM)pnmcd);
 115 }
 116
 117 static LRESULT notify_hdr (const TRACKBAR_INFO *infoPtr, INT code, LPNMHDR pnmh)
 118 {
 119     LRESULT result;
 120
 121     TRACE("(code=%d)\n", code);
 122
 123     pnmh->hwndFrom = infoPtr->hwndSelf;
 124     pnmh->idFrom = GetWindowLongPtrW(infoPtr->hwndSelf, GWLP_ID);
 125     pnmh->code = code;
 126     result = SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, pnmh->idFrom, (LPARAM)pnmh);
 127
 128     TRACE("  <= %ld\n", result);
 129
 130     return result;
 131 }
 132
 133 static inline int notify (const TRACKBAR_INFO *infoPtr, INT code)
 134 {
 135     NMHDR nmh;
 136     return notify_hdr(infoPtr, code, &nmh);
 137 }
 138
 139 static void notify_with_scroll (const TRACKBAR_INFO *infoPtr, UINT code)
 140 {
 141     UINT scroll = infoPtr->dwStyle & TBS_VERT ? WM_VSCROLL : WM_HSCROLL;
 142
 143     TRACE("%x\n", code);
 144
 145     SendMessageW (infoPtr->hwndNotify, scroll, code, (LPARAM)infoPtr->hwndSelf);
 146 }
 147
 148 static void TRACKBAR_RecalculateTics (TRACKBAR_INFO *infoPtr)
 149 {
 150     int tic;
 151     unsigned nrTics, i;
 152
 153     if (infoPtr->uTicFreq && infoPtr->lRangeMax >= infoPtr->lRangeMin) {
 154         nrTics=(infoPtr->lRangeMax - infoPtr->lRangeMin)/infoPtr->uTicFreq;
 155         /* don't add extra tic if there's no remainder */
 156         if (nrTics && ((infoPtr->lRangeMax - infoPtr->lRangeMin) % infoPtr->uTicFreq == 0))
 157           nrTics--;
 158     }
 159     else {
 160         Free (infoPtr->tics);
 161         infoPtr->tics = NULL;
 162         infoPtr->uNumTics = 0;
 163         return;
 164     }
 165
 166     if (nrTics != infoPtr->uNumTics) {
 167         infoPtr->tics=ReAlloc (infoPtr->tics,
 168                                         (nrTics+1)*sizeof (DWORD));
 169         if (!infoPtr->tics) {
 170             infoPtr->uNumTics = 0;
 171             notify(infoPtr, NM_OUTOFMEMORY);
 172             return;
 173         }
 174         infoPtr->uNumTics = nrTics;
 175     }
 176
 177     tic = infoPtr->lRangeMin + infoPtr->uTicFreq;
 178     for (i = 0; i < nrTics; i++, tic += infoPtr->uTicFreq)
 179         infoPtr->tics[i] = tic;
 180 }
 181
 182 /* converts from physical (mouse) position to logical position
 183    (in range of trackbar) */
 184
 185 static inline LONG
 186 TRACKBAR_ConvertPlaceToPosition (const TRACKBAR_INFO *infoPtr, int place)
 187 {
 188     double range, width, pos, offsetthumb;
 189
 190     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 191     if (infoPtr->dwStyle & TBS_VERT) {
 192         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 193         width = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - (offsetthumb * 2) - 1;
 194         pos = (range*(place - infoPtr->rcChannel.top - offsetthumb)) / width;
 195     } else {
 196         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 197         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - (offsetthumb * 2) - 1;
 198         pos = (range*(place - infoPtr->rcChannel.left - offsetthumb)) / width;
 199     }
 200     pos += infoPtr->lRangeMin;
 201     if (pos > infoPtr->lRangeMax)
 202         pos = infoPtr->lRangeMax;
 203     else if (pos < infoPtr->lRangeMin)
 204         pos = infoPtr->lRangeMin;
 205
 206     TRACE("%.2f\n", pos);
 207     return (LONG)floor(pos + 0.5);
 208 }
 209
 210
 211 /* return: 0> prev, 0 none, >0 next */
 212 static LONG
 213 TRACKBAR_GetAutoPageDirection (const TRACKBAR_INFO *infoPtr, POINT clickPoint)
 214 {
 215     RECT pageRect;
 216
 217     if (infoPtr->dwStyle & TBS_VERT) {
 218         pageRect.top = infoPtr->rcChannel.top;
 219         pageRect.bottom = infoPtr->rcChannel.bottom;
 220         pageRect.left = infoPtr->rcThumb.left;
 221         pageRect.right = infoPtr->rcThumb.right;
 222     } else {
 223         pageRect.top = infoPtr->rcThumb.top;
 224         pageRect.bottom = infoPtr->rcThumb.bottom;
 225         pageRect.left = infoPtr->rcChannel.left;
 226         pageRect.right = infoPtr->rcChannel.right;
 227     }
 228
 229
 230     if (PtInRect(&pageRect, clickPoint))
 231     {
 232         int clickPlace = (infoPtr->dwStyle & TBS_VERT) ? clickPoint.y : clickPoint.x;
 233
 234         LONG clickPos = TRACKBAR_ConvertPlaceToPosition(infoPtr, clickPlace);
 235
 236         return clickPos - infoPtr->lPos;
 237     }
 238
 239     return 0;
 240 }
 241
 242 static inline void
 243 TRACKBAR_PageDown (TRACKBAR_INFO *infoPtr)
 244 {
 245     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 246
 247     infoPtr->lPos += infoPtr->lPageSize;
 248     if (infoPtr->lPos > infoPtr->lRangeMax)
 249         infoPtr->lPos = infoPtr->lRangeMax;
 250     notify_with_scroll (infoPtr, TB_PAGEDOWN);
 251 }
 252
 253
 254 static inline void
 255 TRACKBAR_PageUp (TRACKBAR_INFO *infoPtr)
 256 {
 257     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 258
 259     infoPtr->lPos -= infoPtr->lPageSize;
 260     if (infoPtr->lPos < infoPtr->lRangeMin)
 261         infoPtr->lPos = infoPtr->lRangeMin;
 262     notify_with_scroll (infoPtr, TB_PAGEUP);
 263 }
 264
 265 static inline void TRACKBAR_LineUp(TRACKBAR_INFO *infoPtr)
 266 {
 267     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 268     infoPtr->lPos -= infoPtr->lLineSize;
 269     if (infoPtr->lPos < infoPtr->lRangeMin)
 270         infoPtr->lPos = infoPtr->lRangeMin;
 271     notify_with_scroll (infoPtr, TB_LINEUP);
 272 }
 273
 274 static inline void TRACKBAR_LineDown(TRACKBAR_INFO *infoPtr)
 275 {
 276     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 277     infoPtr->lPos += infoPtr->lLineSize;
 278     if (infoPtr->lPos > infoPtr->lRangeMax)
 279         infoPtr->lPos = infoPtr->lRangeMax;
 280     notify_with_scroll (infoPtr, TB_LINEDOWN);
 281 }
 282
 283 static void
 284 TRACKBAR_CalcChannel (TRACKBAR_INFO *infoPtr)
 285 {
 286     INT cyChannel, offsetthumb, offsetedge;
 287     RECT lpRect, *channel = & infoPtr->rcChannel;
 288
 289     GetClientRect (infoPtr->hwndSelf, &lpRect);
 290
 291     offsetthumb = infoPtr->uThumbLen / 4;
 292     offsetedge  = offsetthumb + 3;
 293     cyChannel   = (infoPtr->dwStyle & TBS_ENABLESELRANGE) ? offsetthumb*3 : 4;
 294     if (infoPtr->dwStyle & TBS_VERT) {
 295         channel->top    = lpRect.top + offsetedge;
 296         channel->bottom = lpRect.bottom - offsetedge;
 297         if (infoPtr->dwStyle & TBS_ENABLESELRANGE)
 298             channel->left = lpRect.left + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 299         else
 300             channel->left = lpRect.left + (infoPtr->uThumbLen / 2) - 1;
 301         if (infoPtr->dwStyle & TBS_BOTH) {
 302             if (infoPtr->dwStyle & TBS_NOTICKS)
 303                 channel->left += 1;
 304             else
 305                 channel->left += 9;
 306         }
 307         else if (infoPtr->dwStyle & TBS_TOP) {
 308             if (infoPtr->dwStyle & TBS_NOTICKS)
 309                 channel->left += 2;
 310             else
 311                 channel->left += 10;
 312         }
 313         channel->right = channel->left + cyChannel;
 314     } else {
 315         channel->left = lpRect.left + offsetedge;
 316         channel->right = lpRect.right - offsetedge;
 317         if (infoPtr->dwStyle & TBS_ENABLESELRANGE)
 318             channel->top = lpRect.top + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 319         else
 320             channel->top = lpRect.top + (infoPtr->uThumbLen / 2) - 1;
 321         if (infoPtr->dwStyle & TBS_BOTH) {
 322             if (infoPtr->dwStyle & TBS_NOTICKS)
 323                 channel->top += 1;
 324             else
 325                 channel->top += 9;
 326         }
 327         else if (infoPtr->dwStyle & TBS_TOP) {
 328             if (infoPtr->dwStyle & TBS_NOTICKS)
 329                 channel->top += 2;
 330             else
 331                 channel->top += 10;
 332         }
 333         channel->bottom   = channel->top + cyChannel;
 334     }
 335 }
 336
 337 static void
 338 TRACKBAR_CalcThumb (const TRACKBAR_INFO *infoPtr, LONG lPos, RECT *thumb)
 339 {
 340     int range, width, height, thumbwidth;
 341     RECT lpRect;
 342
 343     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 344     thumbwidth = (infoPtr->uThumbLen / 2) | 1;
 345
 346     if (!range) range = 1;
 347
 348     GetClientRect(infoPtr->hwndSelf, &lpRect);
 349     if (infoPtr->dwStyle & TBS_VERT)
 350     {
 351         height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - thumbwidth;
 352
 353         if ((infoPtr->dwStyle & (TBS_BOTH | TBS_LEFT)) && !(infoPtr->dwStyle & TBS_NOTICKS))
 354             thumb->left = 10;
 355         else
 356             thumb->left = 2;
 357         thumb->right = thumb->left + infoPtr->uThumbLen;
 358         thumb->top = infoPtr->rcChannel.top +
 359                      (height*(lPos - infoPtr->lRangeMin))/range;
 360         thumb->bottom = thumb->top + thumbwidth;
 361     }
 362     else
 363     {
 364         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - thumbwidth;
 365
 366         thumb->left = infoPtr->rcChannel.left +
 367                       (width*(lPos - infoPtr->lRangeMin))/range;
 368         thumb->right = thumb->left + thumbwidth;
 369         if ((infoPtr->dwStyle & (TBS_BOTH | TBS_TOP)) && !(infoPtr->dwStyle & TBS_NOTICKS))
 370             thumb->top = 10;
 371         else
 372             thumb->top = 2;
 373         thumb->bottom = thumb->top + infoPtr->uThumbLen;
 374     }
 375 }
 376
 377 static inline void
 378 TRACKBAR_UpdateThumb (TRACKBAR_INFO *infoPtr)
 379 {
 380     TRACKBAR_CalcThumb(infoPtr, infoPtr->lPos, &infoPtr->rcThumb);
 381 }
 382
 383 static inline void
 384 TRACKBAR_InvalidateAll (const TRACKBAR_INFO *infoPtr)
 385 {
 386     InvalidateRect(infoPtr->hwndSelf, NULL, FALSE);
 387 }
 388
 389 static void
 390 TRACKBAR_InvalidateThumb (const TRACKBAR_INFO *infoPtr, LONG thumbPos)
 391 {
 392     RECT rcThumb;
 393
 394     TRACKBAR_CalcThumb(infoPtr, thumbPos, &rcThumb);
 395     InflateRect(&rcThumb, 1, 1);
 396     InvalidateRect(infoPtr->hwndSelf, &rcThumb, FALSE);
 397 }
 398
 399 static inline void
 400 TRACKBAR_InvalidateThumbMove (const TRACKBAR_INFO *infoPtr, LONG oldPos, LONG newPos)
 401 {
 402     TRACKBAR_InvalidateThumb (infoPtr, oldPos);
 403     if (newPos != oldPos)
 404         TRACKBAR_InvalidateThumb (infoPtr, newPos);
 405 }
 406
 407 static inline BOOL
 408 TRACKBAR_HasSelection (const TRACKBAR_INFO *infoPtr)
 409 {
 410     return infoPtr->lSelMin != infoPtr->lSelMax;
 411 }
 412
 413 static void
 414 TRACKBAR_CalcSelection (TRACKBAR_INFO *infoPtr)
 415 {
 416     RECT *selection = &infoPtr->rcSelection;
 417     int range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 418     int offsetthumb, height, width;
 419
 420     if (range <= 0) {
 421         SetRectEmpty (selection);
 422     } else {
 423         if (infoPtr->dwStyle & TBS_VERT) {
 424             offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 425             height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - offsetthumb*2;
 426             selection->top    = infoPtr->rcChannel.top + offsetthumb +
 427                 (height*infoPtr->lSelMin)/range;
 428             selection->bottom = infoPtr->rcChannel.top + offsetthumb +
 429                 (height*infoPtr->lSelMax)/range;
 430             selection->left   = infoPtr->rcChannel.left + 3;
 431             selection->right  = infoPtr->rcChannel.right - 3;
 432         } else {
 433             offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 434             width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
 435             selection->left   = infoPtr->rcChannel.left + offsetthumb +
 436                 (width*infoPtr->lSelMin)/range;
 437             selection->right  = infoPtr->rcChannel.left + offsetthumb +
 438                 (width*infoPtr->lSelMax)/range;
 439             selection->top    = infoPtr->rcChannel.top + 3;
 440             selection->bottom = infoPtr->rcChannel.bottom - 3;
 441         }
 442     }
 443
 444     TRACE("selection[%s]\n", wine_dbgstr_rect(selection));
 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     TRACKBAR_UpdateThumb (infoPtr);
 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)
 471 {
 472     RECT rcChannel = infoPtr->rcChannel;
 473     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 474
 475     if (theme)
 476     {
 477         DrawThemeBackground (theme, hdc,
 478             (infoPtr->dwStyle & 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 (infoPtr->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         SetRect(&rcTics, infoPtr->rcThumb.left - 2, infoPtr->rcChannel.top + offsetthumb,
 502                 infoPtr->rcThumb.right + 2, infoPtr->rcChannel.bottom - offsetthumb - 1);
 503     } else {
 504         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 505         SetRect(&rcTics, infoPtr->rcChannel.left + offsetthumb, infoPtr->rcThumb.top - 2,
 506                 infoPtr->rcChannel.right - offsetthumb - 1, infoPtr->rcThumb.bottom + 2);
 507     }
 508
 509     if (flags & (TBS_TOP | TBS_LEFT)) {
 510         x = rcTics.left;
 511         y = rcTics.top;
 512         side = -1;
 513     } else {
 514         x = rcTics.right;
 515         y = rcTics.bottom;
 516         side = 1;
 517     }
 518
 519     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 520     if (range <= 0)
 521       range = 1; /* to avoid division by zero */
 522
 523     if (flags & TIC_SELECTIONMARK) {
 524         indent = (flags & TIC_SELECTIONMARKMIN) ? -1 : 1;
 525     } else if (flags & TIC_EDGE) {
 526         len++;
 527     }
 528
 529     if (flags & TBS_VERT) {
 530         int height = rcTics.bottom - rcTics.top;
 531         y = rcTics.top + (height*(ticPos - infoPtr->lRangeMin))/range;
 532     } else {
 533         int width = rcTics.right - rcTics.left;
 534         x = rcTics.left + (width*(ticPos - infoPtr->lRangeMin))/range;
 535     }
 536
 537     ox = x;
 538     oy = y;
 539     MoveToEx(hdc, x, y, 0);
 540     if (flags & TBS_VERT) x += len * side;
 541     else y += len * side;
 542     LineTo(hdc, x, y);
 543
 544     if (flags & TIC_SELECTIONMARK) {
 545         if (flags & TBS_VERT) {
 546             x -= side;
 547         } else {
 548             y -= side;
 549         }
 550         MoveToEx(hdc, x, y, 0);
 551         if (flags & TBS_VERT) {
 552             y += 2 * indent;
 553         } else {
 554             x += 2 * indent;
 555         }
 556
 557         LineTo(hdc, x, y);
 558         LineTo(hdc, ox, oy);
 559     }
 560 }
 561
 562
 563 static inline void
 564 TRACKBAR_DrawTic (const TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 565 {
 566     if ((flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 567         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags | TBS_LEFT);
 568
 569     if (!(flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 570         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags & ~TBS_LEFT);
 571 }
 572
 573 static void
 574 TRACKBAR_DrawTics (const TRACKBAR_INFO *infoPtr, HDC hdc)
 575 {
 576     unsigned int i;
 577     int ticFlags = infoPtr->dwStyle & 0x0f;
 578     LOGPEN ticPen = { PS_SOLID, {1, 0}, GetSysColor (COLOR_3DDKSHADOW) };
 579     HPEN hOldPen, hTicPen;
 580     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 581
 582     if (theme)
 583     {
 584         int part = (infoPtr->dwStyle & TBS_VERT) ? TKP_TICSVERT : TKP_TICS;
 585         GetThemeColor (theme, part, TSS_NORMAL, TMT_COLOR, &ticPen.lopnColor);
 586     }
 587     /* create the pen to draw the tics with */
 588     hTicPen = CreatePenIndirect(&ticPen);
 589     hOldPen = hTicPen ? SelectObject(hdc, hTicPen) : 0;
 590
 591     /* actually draw the tics */
 592     for (i=0; i<infoPtr->uNumTics; i++)
 593         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->tics[i], ticFlags);
 594
 595     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMin, ticFlags | TIC_EDGE);
 596     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMax, ticFlags | TIC_EDGE);
 597
 598     if ((infoPtr->dwStyle & TBS_ENABLESELRANGE) && TRACKBAR_HasSelection(infoPtr)) {
 599         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMin,
 600                           ticFlags | TIC_SELECTIONMARKMIN);
 601         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMax,
 602                           ticFlags | TIC_SELECTIONMARKMAX);
 603     }
 604
 605     /* clean up the pen, if we created one */
 606     if (hTicPen) {
 607         SelectObject(hdc, hOldPen);
 608         DeleteObject(hTicPen);
 609     }
 610 }
 611
 612 static int
 613 TRACKBAR_FillThumb (const TRACKBAR_INFO *infoPtr, HDC hdc, HBRUSH hbrush)
 614 {
 615     const RECT *thumb = &infoPtr->rcThumb;
 616     POINT points[6];
 617     int PointDepth;
 618     HBRUSH oldbr;
 619
 620     if (infoPtr->dwStyle & TBS_BOTH)
 621     {
 622         FillRect(hdc, thumb, hbrush);
 623         return 0;
 624     }
 625
 626     if (infoPtr->dwStyle & TBS_VERT)
 627     {
 628         PointDepth = (thumb->bottom - thumb->top) / 2;
 629         if (infoPtr->dwStyle & TBS_LEFT)
 630         {
 631             points[0].x = thumb->right-1;
 632             points[0].y = thumb->top;
 633             points[1].x = thumb->right-1;
 634             points[1].y = thumb->bottom-1;
 635             points[2].x = thumb->left + PointDepth;
 636             points[2].y = thumb->bottom-1;
 637             points[3].x = thumb->left;
 638             points[3].y = thumb->top + PointDepth;
 639             points[4].x = thumb->left + PointDepth;
 640             points[4].y = thumb->top;
 641             points[5].x = points[0].x;
 642             points[5].y = points[0].y;
 643         }
 644         else
 645         {
 646             points[0].x = thumb->right;
 647             points[0].y = thumb->top + PointDepth;
 648             points[1].x = thumb->right - PointDepth;
 649             points[1].y = thumb->bottom-1;
 650             points[2].x = thumb->left;
 651             points[2].y = thumb->bottom-1;
 652             points[3].x = thumb->left;
 653             points[3].y = thumb->top;
 654             points[4].x = thumb->right - PointDepth;
 655             points[4].y = thumb->top;
 656             points[5].x = points[0].x;
 657             points[5].y = points[0].y;
 658         }
 659     }
 660     else
 661     {
 662         PointDepth = (thumb->right - thumb->left) / 2;
 663         if (infoPtr->dwStyle & TBS_TOP)
 664         {
 665             points[0].x = thumb->left + PointDepth;
 666             points[0].y = thumb->top+1;
 667             points[1].x = thumb->right-1;
 668             points[1].y = thumb->top + PointDepth + 1;
 669             points[2].x = thumb->right-1;
 670             points[2].y = thumb->bottom-1;
 671             points[3].x = thumb->left;
 672             points[3].y = thumb->bottom-1;
 673             points[4].x = thumb->left;
 674             points[4].y = thumb->top + PointDepth + 1;
 675             points[5].x = points[0].x;
 676             points[5].y = points[0].y;
 677         }
 678         else
 679         {
 680             points[0].x = thumb->right-1;
 681             points[0].y = thumb->top;
 682             points[1].x = thumb->right-1;
 683             points[1].y = thumb->bottom - PointDepth - 1;
 684             points[2].x = thumb->left + PointDepth;
 685             points[2].y = thumb->bottom-1;
 686             points[3].x = thumb->left;
 687             points[3].y = thumb->bottom - PointDepth - 1;
 688             points[4].x = thumb->left;
 689             points[4].y = thumb->top;
 690             points[5].x = points[0].x;
 691             points[5].y = points[0].y;
 692         }
 693     }
 694
 695     oldbr = SelectObject(hdc, hbrush);
 696     SetPolyFillMode(hdc, WINDING);
 697     Polygon(hdc, points, sizeof(points) / sizeof(points[0]));
 698     SelectObject(hdc, oldbr);
 699
 700     return PointDepth;
 701 }
 702
 703 static void
 704 TRACKBAR_DrawThumb (TRACKBAR_INFO *infoPtr, HDC hdc)
 705 {
 706     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 707     int PointDepth;
 708     HBRUSH brush;
 709
 710     if (theme)
 711     {
 712         int partId;
 713         int stateId;
 714         if (infoPtr->dwStyle & TBS_BOTH)
 715             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBVERT : TKP_THUMB;
 716         else if (infoPtr->dwStyle & TBS_LEFT)
 717             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBLEFT : TKP_THUMBTOP;
 718         else
 719             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBRIGHT : TKP_THUMBBOTTOM;
 720
 721         if (infoPtr->dwStyle & WS_DISABLED)
 722             stateId = TUS_DISABLED;
 723         else if (infoPtr->flags & TB_DRAG_MODE)
 724             stateId = TUS_PRESSED;
 725         else if (infoPtr->flags & TB_THUMB_HOT)
 726             stateId = TUS_HOT;
 727         else
 728             stateId = TUS_NORMAL;
 729
 730         DrawThemeBackground (theme, hdc, partId, stateId, &infoPtr->rcThumb, NULL);
 731
 732         return;
 733     }
 734
 735     if (infoPtr->dwStyle & WS_DISABLED || infoPtr->flags & TB_DRAG_MODE)
 736     {
 737         if (comctl32_color.clr3dHilight == comctl32_color.clrWindow)
 738             brush = COMCTL32_hPattern55AABrush;
 739         else
 740             brush = GetSysColorBrush(COLOR_SCROLLBAR);
 741
 742         SetTextColor(hdc, comctl32_color.clr3dFace);
 743         SetBkColor(hdc, comctl32_color.clr3dHilight);
 744     }
 745     else
 746         brush = GetSysColorBrush(COLOR_BTNFACE);
 747
 748     PointDepth = TRACKBAR_FillThumb(infoPtr, hdc, brush);
 749
 750     if (infoPtr->dwStyle & TBS_BOTH)
 751     {
 752        DrawEdge(hdc, &infoPtr->rcThumb, EDGE_RAISED, BF_RECT | BF_SOFT);
 753        return;
 754     }
 755     else
 756     {
 757         RECT thumb = infoPtr->rcThumb;
 758
 759         if (infoPtr->dwStyle & TBS_VERT)
 760         {
 761           if (infoPtr->dwStyle & TBS_LEFT)
 762           {
 763             /* rectangular part */
 764             thumb.left += PointDepth;
 765             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_TOP | BF_RIGHT | BF_BOTTOM | BF_SOFT);
 766
 767             /* light edge */
 768             thumb.left -= PointDepth;
 769             thumb.right = thumb.left + PointDepth;
 770             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 771             thumb.top = infoPtr->rcThumb.top;
 772             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPRIGHT | BF_SOFT);
 773
 774             /* shadowed edge */
 775             thumb.top += PointDepth;
 776             thumb.bottom += PointDepth;
 777             DrawEdge(hdc, &thumb, EDGE_SUNKEN, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 778             return;
 779           }
 780           else
 781           {
 782             /* rectangular part */
 783             thumb.right -= PointDepth;
 784             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_TOP | BF_LEFT | BF_BOTTOM | BF_SOFT);
 785
 786             /* light edge */
 787             thumb.left = thumb.right;
 788             thumb.right += PointDepth + 1;
 789             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 790             thumb.top = infoPtr->rcThumb.top;
 791             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 792
 793             /* shadowed edge */
 794             thumb.top += PointDepth;
 795             thumb.bottom += PointDepth;
 796             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT);
 797           }
 798         }
 799         else
 800         {
 801           if (infoPtr->dwStyle & TBS_TOP)
 802           {
 803             /* rectangular part */
 804             thumb.top += PointDepth;
 805             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_LEFT | BF_BOTTOM | BF_RIGHT | BF_SOFT);
 806
 807             /* light edge */
 808             thumb.left = infoPtr->rcThumb.left;
 809             thumb.right = thumb.left + PointDepth;
 810             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 811             thumb.top -= PointDepth;
 812             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPRIGHT | BF_SOFT);
 813
 814             /* shadowed edge */
 815             thumb.left += PointDepth;
 816             thumb.right += PointDepth;
 817             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMRIGHT | BF_SOFT);
 818           }
 819           else
 820           {
 821             /* rectangular part */
 822             thumb.bottom -= PointDepth;
 823             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_LEFT | BF_TOP | BF_RIGHT | BF_SOFT);
 824
 825             /* light edge */
 826             thumb.left = infoPtr->rcThumb.left;
 827             thumb.right = thumb.left + PointDepth;
 828             thumb.top = infoPtr->rcThumb.bottom - PointDepth - 1;
 829             thumb.bottom += PointDepth;
 830             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 831
 832             /* shadowed edge */
 833             thumb.left += PointDepth;
 834             thumb.right += PointDepth;
 835             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT);
 836           }
 837         }
 838     }
 839 }
 840
 841
 842 static inline void
 843 TRACKBAR_ActivateToolTip (const TRACKBAR_INFO *infoPtr, BOOL fShow)
 844 {
 845     TTTOOLINFOW ti;
 846
 847     if (!infoPtr->hwndToolTip) return;
 848
 849     ZeroMemory(&ti, sizeof(ti));
 850     ti.cbSize = sizeof(ti);
 851     ti.hwnd   = infoPtr->hwndSelf;
 852
 853     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKACTIVATE, fShow, (LPARAM)&ti);
 854 }
 855
 856
 857 static void
 858 TRACKBAR_UpdateToolTip (const TRACKBAR_INFO *infoPtr)
 859 {
 860     WCHAR buf[80];
 861     static const WCHAR fmt[] = { '%', 'l', 'd', 0 };
 862     TTTOOLINFOW ti;
 863     POINT pt;
 864     RECT rcClient;
 865     LRESULT size;
 866
 867     if (!infoPtr->hwndToolTip) return;
 868
 869     ZeroMemory(&ti, sizeof(ti));
 870     ti.cbSize = sizeof(ti);
 871     ti.hwnd   = infoPtr->hwndSelf;
 872     ti.uFlags = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
 873
 874     wsprintfW (buf, fmt, infoPtr->lPos);
 875     ti.lpszText = buf;
 876     SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 877
 878     GetClientRect (infoPtr->hwndSelf, &rcClient);
 879     size = SendMessageW (infoPtr->hwndToolTip, TTM_GETBUBBLESIZE, 0, (LPARAM)&ti);
 880     if (infoPtr->dwStyle & TBS_VERT) {
 881         if (infoPtr->fLocation == TBTS_LEFT)
 882             pt.x = 0 - LOWORD(size) - TOOLTIP_OFFSET;
 883         else
 884             pt.x = rcClient.right + TOOLTIP_OFFSET;
 885         pt.y = (infoPtr->rcThumb.top + infoPtr->rcThumb.bottom - HIWORD(size))/2;
 886     } else {
 887         if (infoPtr->fLocation == TBTS_TOP)
 888             pt.y = 0 - HIWORD(size) - TOOLTIP_OFFSET;
 889         else
 890             pt.y = rcClient.bottom + TOOLTIP_OFFSET;
 891         pt.x = (infoPtr->rcThumb.left + infoPtr->rcThumb.right - LOWORD(size))/2;
 892     }
 893     ClientToScreen(infoPtr->hwndSelf, &pt);
 894
 895     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKPOSITION,
 896                   0, MAKELPARAM(pt.x, pt.y));
 897 }
 898
 899
 900 static void
 901 TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdcDst)
 902 {
 903     RECT rcClient;
 904     HDC hdc;
 905     HBITMAP hOldBmp = 0, hOffScreenBmp = 0;
 906     NMCUSTOMDRAW nmcd;
 907     int gcdrf, icdrf;
 908
 909     if (infoPtr->flags & TB_THUMBCHANGED) {
 910         TRACKBAR_UpdateThumb (infoPtr);
 911         if (infoPtr->flags & TB_THUMBSIZECHANGED)
 912             TRACKBAR_CalcChannel (infoPtr);
 913     }
 914     if (infoPtr->flags & TB_SELECTIONCHANGED)
 915         TRACKBAR_CalcSelection (infoPtr);
 916
 917     if (infoPtr->flags & TB_DRAG_MODE)
 918         TRACKBAR_UpdateToolTip (infoPtr);
 919
 920     infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
 921
 922     GetClientRect (infoPtr->hwndSelf, &rcClient);
 923
 924     /* try to render offscreen, if we fail, carrry onscreen */
 925     hdc = CreateCompatibleDC(hdcDst);
 926     if (hdc) {
 927         hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
 928         if (hOffScreenBmp) {
 929             hOldBmp = SelectObject(hdc, hOffScreenBmp);
 930         } else {
 931             DeleteObject(hdc);
 932             hdc = hdcDst;
 933         }
 934     } else {
 935         hdc = hdcDst;
 936     }
 937
 938     ZeroMemory(&nmcd, sizeof(nmcd));
 939     nmcd.hdr.hwndFrom = infoPtr->hwndSelf;
 940     nmcd.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
 941     nmcd.hdr.code = NM_CUSTOMDRAW;
 942     nmcd.hdc = hdc;
 943
 944     /* start the paint cycle */
 945     nmcd.rc = rcClient;
 946     gcdrf = notify_customdraw(infoPtr, &nmcd, CDDS_PREPAINT);
 947     if (gcdrf & CDRF_SKIPDEFAULT) goto cleanup;
 948
 949     /* Erase background */
 950     if (gcdrf == CDRF_DODEFAULT ||
 951         notify_customdraw(infoPtr, &nmcd, CDDS_PREERASE) != CDRF_SKIPDEFAULT) {
 952         if (GetWindowTheme (infoPtr->hwndSelf)) {
 953             DrawThemeParentBackground (infoPtr->hwndSelf, hdc, 0);
 954         }
 955         else {
 956             HBRUSH brush = (HBRUSH)SendMessageW(infoPtr->hwndNotify, WM_CTLCOLORSTATIC,
 957                     (WPARAM)hdc, (LPARAM)infoPtr->hwndSelf);
 958             FillRect (hdc, &rcClient, brush ? brush : GetSysColorBrush(COLOR_BTNFACE));
 959         }
 960         if (gcdrf != CDRF_DODEFAULT)
 961             notify_customdraw(infoPtr, &nmcd, CDDS_POSTERASE);
 962     }
 963
 964     /* draw channel */
 965     if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 966         nmcd.dwItemSpec = TBCD_CHANNEL;
 967         nmcd.uItemState = CDIS_DEFAULT;
 968         nmcd.rc = infoPtr->rcChannel;
 969         icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 970     } else icdrf = CDRF_DODEFAULT;
 971     if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 972         TRACKBAR_DrawChannel (infoPtr, hdc);
 973         if (icdrf & CDRF_NOTIFYPOSTPAINT)
 974             notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 975     }
 976
 977
 978     /* draw tics */
 979     if (!(infoPtr->dwStyle & TBS_NOTICKS)) {
 980         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 981             nmcd.dwItemSpec = TBCD_TICS;
 982             nmcd.uItemState = CDIS_DEFAULT;
 983             nmcd.rc = rcClient;
 984             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 985         } else icdrf = CDRF_DODEFAULT;
 986         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 987             TRACKBAR_DrawTics (infoPtr, hdc);
 988             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 989                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 990         }
 991     }
 992
 993     /* draw thumb */
 994     if (!(infoPtr->dwStyle & TBS_NOTHUMB)) {
 995         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 996             nmcd.dwItemSpec = TBCD_THUMB;
 997             nmcd.uItemState = infoPtr->flags & TB_DRAG_MODE ? CDIS_HOT : CDIS_DEFAULT;
 998             nmcd.rc = infoPtr->rcThumb;
 999             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
1000         } else icdrf = CDRF_DODEFAULT;
1001         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
1002             TRACKBAR_DrawThumb(infoPtr, hdc);
1003             if (icdrf & CDRF_NOTIFYPOSTPAINT)
1004                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
1005         }
1006     }
1007
1008     /* draw focus rectangle */
1009     if (infoPtr->bFocussed) {
1010         DrawFocusRect(hdc, &rcClient);
1011     }
1012
1013     /* finish up the painting */
1014     if (gcdrf & CDRF_NOTIFYPOSTPAINT)
1015         notify_customdraw(infoPtr, &nmcd, CDDS_POSTPAINT);
1016
1017 cleanup:
1018     /* cleanup, if we rendered offscreen */
1019     if (hdc != hdcDst) {
1020         BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
1021         SelectObject(hdc, hOldBmp);
1022         DeleteObject(hOffScreenBmp);
1023         DeleteObject(hdc);
1024     }
1025 }
1026
1027
1028 static void
1029 TRACKBAR_AlignBuddies (const TRACKBAR_INFO *infoPtr)
1030 {
1031     HWND hwndParent = GetParent (infoPtr->hwndSelf);
1032     RECT rcSelf, rcBuddy;
1033     INT x, y;
1034
1035     GetWindowRect (infoPtr->hwndSelf, &rcSelf);
1036     MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcSelf, 2);
1037
1038     /* align buddy left or above */
1039     if (infoPtr->hwndBuddyLA) {
1040         GetWindowRect (infoPtr->hwndBuddyLA, &rcBuddy);
1041         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1042
1043         if (infoPtr->dwStyle & TBS_VERT) {
1044             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1045                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1046             y = rcSelf.top - (rcBuddy.bottom - rcBuddy.top);
1047         }
1048         else {
1049             x = rcSelf.left - (rcBuddy.right - rcBuddy.left);
1050             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1051                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1052         }
1053
1054         SetWindowPos (infoPtr->hwndBuddyLA, 0, x, y, 0, 0,
1055                       SWP_NOZORDER | SWP_NOSIZE);
1056     }
1057
1058
1059     /* align buddy right or below */
1060     if (infoPtr->hwndBuddyRB) {
1061         GetWindowRect (infoPtr->hwndBuddyRB, &rcBuddy);
1062         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1063
1064         if (infoPtr->dwStyle & TBS_VERT) {
1065             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1066                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1067             y = rcSelf.bottom;
1068         }
1069         else {
1070             x = rcSelf.right;
1071             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1072                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1073         }
1074         SetWindowPos (infoPtr->hwndBuddyRB, 0, x, y, 0, 0,
1075                       SWP_NOZORDER | SWP_NOSIZE);
1076     }
1077 }
1078
1079
1080 static LRESULT
1081 TRACKBAR_ClearSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1082 {
1083     infoPtr->lSelMin = 0;
1084     infoPtr->lSelMax = 0;
1085     infoPtr->flags |= TB_SELECTIONCHANGED;
1086
1087     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1088
1089     return 0;
1090 }
1091
1092
1093 static LRESULT
1094 TRACKBAR_ClearTics (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1095 {
1096     if (infoPtr->tics) {
1097         Free (infoPtr->tics);
1098         infoPtr->tics = NULL;
1099         infoPtr->uNumTics = 0;
1100     }
1101
1102     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1103
1104     return 0;
1105 }
1106
1107
1108 static inline LRESULT
1109 TRACKBAR_GetChannelRect (const TRACKBAR_INFO *infoPtr, LPRECT lprc)
1110 {
1111     if (lprc == NULL) return 0;
1112
1113     lprc->left   = infoPtr->rcChannel.left;
1114     lprc->right  = infoPtr->rcChannel.right;
1115     lprc->bottom = infoPtr->rcChannel.bottom;
1116     lprc->top    = infoPtr->rcChannel.top;
1117
1118     return 0;
1119 }
1120
1121
1122 static inline LONG
1123 TRACKBAR_GetNumTics (const TRACKBAR_INFO *infoPtr)
1124 {
1125     if (infoPtr->dwStyle & TBS_NOTICKS) return 0;
1126
1127     return infoPtr->uNumTics + 2;
1128 }
1129
1130
1131 static int comp_tics (const void *ap, const void *bp)
1132 {
1133     const DWORD a = *(const DWORD *)ap;
1134     const DWORD b = *(const DWORD *)bp;
1135
1136     TRACE("(a=%d, b=%d)\n", a, b);
1137     if (a < b) return -1;
1138     if (a > b) return 1;
1139     return 0;
1140 }
1141
1142
1143 static inline LONG
1144 TRACKBAR_GetTic (const TRACKBAR_INFO *infoPtr, INT iTic)
1145 {
1146     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1147         return -1;
1148
1149     qsort(infoPtr->tics, infoPtr->uNumTics, sizeof(DWORD), comp_tics);
1150     return infoPtr->tics[iTic];
1151 }
1152
1153
1154 static inline LONG
1155 TRACKBAR_GetTicPos (const TRACKBAR_INFO *infoPtr, INT iTic)
1156 {
1157     LONG range, width, pos, tic;
1158     int offsetthumb;
1159
1160     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1161         return -1;
1162
1163     tic   = TRACKBAR_GetTic (infoPtr, iTic);
1164     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
1165     if (range <= 0) range = 1;
1166     offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
1167     width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
1168     pos   = infoPtr->rcChannel.left + offsetthumb + (width * tic) / range;
1169
1170     return pos;
1171 }
1172
1173
1174 static HWND
1175 TRACKBAR_SetBuddy (TRACKBAR_INFO *infoPtr, BOOL fLocation, HWND hwndBuddy)
1176 {
1177     HWND hwndTemp;
1178
1179     if (fLocation) {
1180         /* buddy is left or above */
1181         hwndTemp = infoPtr->hwndBuddyLA;
1182         infoPtr->hwndBuddyLA = hwndBuddy;
1183     }
1184     else {
1185         /* buddy is right or below */
1186         hwndTemp = infoPtr->hwndBuddyRB;
1187         infoPtr->hwndBuddyRB = hwndBuddy;
1188     }
1189
1190     TRACKBAR_AlignBuddies (infoPtr);
1191
1192     return hwndTemp;
1193 }
1194
1195
1196 static inline LONG
1197 TRACKBAR_SetLineSize (TRACKBAR_INFO *infoPtr, LONG lLineSize)
1198 {
1199     LONG lTemp = infoPtr->lLineSize;
1200
1201     infoPtr->lLineSize = lLineSize;
1202
1203     return lTemp;
1204 }
1205
1206
1207 static inline LONG
1208 TRACKBAR_SetPageSize (TRACKBAR_INFO *infoPtr, LONG lPageSize)
1209 {
1210     LONG lTemp = infoPtr->lPageSize;
1211
1212     if (lPageSize != -1)
1213         infoPtr->lPageSize = lPageSize;
1214     else
1215         infoPtr->lPageSize = TB_DEFAULTPAGESIZE;
1216
1217     return lTemp;
1218 }
1219
1220
1221 static inline LRESULT
1222 TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
1223 {
1224     LONG oldPos = infoPtr->lPos;
1225     infoPtr->lPos = lPosition;
1226
1227     if (infoPtr->lPos < infoPtr->lRangeMin)
1228         infoPtr->lPos = infoPtr->lRangeMin;
1229
1230     if (infoPtr->lPos > infoPtr->lRangeMax)
1231         infoPtr->lPos = infoPtr->lRangeMax;
1232
1233     if (fPosition && oldPos != lPosition)
1234     {
1235         TRACKBAR_UpdateThumb(infoPtr);
1236         TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
1237     }
1238
1239     return 0;
1240 }
1241
1242
1243 static inline LRESULT
1244 TRACKBAR_SetRange (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG range)
1245 {
1246     BOOL changed = infoPtr->lRangeMin != (SHORT)LOWORD(range) ||
1247                    infoPtr->lRangeMax != (SHORT)HIWORD(range);
1248
1249     infoPtr->lRangeMin = (SHORT)LOWORD(range);
1250     infoPtr->lRangeMax = (SHORT)HIWORD(range);
1251
1252     /* clip position to new min/max limit */
1253     if (infoPtr->lPos < infoPtr->lRangeMin)
1254         infoPtr->lPos = infoPtr->lRangeMin;
1255
1256     if (infoPtr->lPos > infoPtr->lRangeMax)
1257         infoPtr->lPos = infoPtr->lRangeMax;
1258
1259     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1260     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1261
1262     if (changed) {
1263         if (infoPtr->dwStyle & TBS_AUTOTICKS)
1264             TRACKBAR_RecalculateTics (infoPtr);
1265         infoPtr->flags |= TB_THUMBPOSCHANGED;
1266     }
1267
1268     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1269
1270     return 0;
1271 }
1272
1273
1274 static inline LRESULT
1275 TRACKBAR_SetRangeMax (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMax)
1276 {
1277     BOOL changed = infoPtr->lRangeMax != lMax;
1278
1279     infoPtr->lRangeMax = lMax;
1280     if (infoPtr->lPos > infoPtr->lRangeMax) {
1281         infoPtr->lPos = infoPtr->lRangeMax;
1282         infoPtr->flags |= TB_THUMBPOSCHANGED;
1283     }
1284
1285     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1286     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1287
1288     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1289         TRACKBAR_RecalculateTics (infoPtr);
1290
1291     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1292
1293     return 0;
1294 }
1295
1296
1297 static inline LRESULT
1298 TRACKBAR_SetRangeMin (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMin)
1299 {
1300     BOOL changed = infoPtr->lRangeMin != lMin;
1301
1302     infoPtr->lRangeMin = lMin;
1303     if (infoPtr->lPos < infoPtr->lRangeMin) {
1304         infoPtr->lPos = infoPtr->lRangeMin;
1305         infoPtr->flags |= TB_THUMBPOSCHANGED;
1306     }
1307
1308     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1309     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1310
1311     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1312         TRACKBAR_RecalculateTics (infoPtr);
1313
1314     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1315
1316     return 0;
1317 }
1318
1319
1320 static inline LRESULT
1321 TRACKBAR_SetSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lSel)
1322 {
1323     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1324         infoPtr->lSelMin = 0;
1325         infoPtr->lSelMax = 0;
1326         return 0;
1327     }
1328
1329     infoPtr->lSelMin = (SHORT)LOWORD(lSel);
1330     infoPtr->lSelMax = (SHORT)HIWORD(lSel);
1331     infoPtr->flags |= TB_SELECTIONCHANGED;
1332
1333     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1334         infoPtr->lSelMin = infoPtr->lRangeMin;
1335     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1336         infoPtr->lSelMax = infoPtr->lRangeMax;
1337
1338     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1339
1340     return 0;
1341 }
1342
1343
1344 static inline LRESULT
1345 TRACKBAR_SetSelEnd (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lEnd)
1346 {
1347     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1348         infoPtr->lSelMax = 0;
1349         return 0;
1350     }
1351
1352     infoPtr->lSelMax = lEnd;
1353     infoPtr->flags |= TB_SELECTIONCHANGED;
1354
1355     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1356         infoPtr->lSelMax = infoPtr->lRangeMax;
1357
1358     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1359
1360     return 0;
1361 }
1362
1363
1364 static inline LRESULT
1365 TRACKBAR_SetSelStart (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lStart)
1366 {
1367     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1368         infoPtr->lSelMin = 0;
1369         return 0;
1370     }
1371
1372     infoPtr->lSelMin = lStart;
1373     infoPtr->flags  |=TB_SELECTIONCHANGED;
1374
1375     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1376         infoPtr->lSelMin = infoPtr->lRangeMin;
1377
1378     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1379
1380     return 0;
1381 }
1382
1383
1384 static inline LRESULT
1385 TRACKBAR_SetThumbLength (TRACKBAR_INFO *infoPtr, UINT iLength)
1386 {
1387     if (infoPtr->dwStyle & TBS_FIXEDLENGTH) {
1388         /* We're not supposed to check if it's really changed or not,
1389            just repaint in any case. */
1390         infoPtr->uThumbLen = iLength;
1391         infoPtr->flags |= TB_THUMBSIZECHANGED;
1392         TRACKBAR_InvalidateAll(infoPtr);
1393     }
1394
1395     return 0;
1396 }
1397
1398
1399 static inline LRESULT
1400 TRACKBAR_SetTic (TRACKBAR_INFO *infoPtr, LONG lPos)
1401 {
1402     if ((lPos < infoPtr->lRangeMin) || (lPos> infoPtr->lRangeMax))
1403         return FALSE;
1404
1405     TRACE("lPos=%d\n", lPos);
1406
1407     infoPtr->uNumTics++;
1408     infoPtr->tics=ReAlloc( infoPtr->tics,
1409                                     (infoPtr->uNumTics)*sizeof (DWORD));
1410     if (!infoPtr->tics) {
1411         infoPtr->uNumTics = 0;
1412         notify(infoPtr, NM_OUTOFMEMORY);
1413         return FALSE;
1414     }
1415     infoPtr->tics[infoPtr->uNumTics-1] = lPos;
1416
1417     TRACKBAR_InvalidateAll(infoPtr);
1418
1419     return TRUE;
1420 }
1421
1422
1423 static inline LRESULT
1424 TRACKBAR_SetTicFreq (TRACKBAR_INFO *infoPtr, WORD wFreq)
1425 {
1426     if (infoPtr->dwStyle & TBS_AUTOTICKS) {
1427         infoPtr->uTicFreq = wFreq;
1428         TRACKBAR_RecalculateTics (infoPtr);
1429         TRACKBAR_InvalidateAll(infoPtr);
1430     }
1431
1432     return 0;
1433 }
1434
1435
1436 static inline INT
1437 TRACKBAR_SetTipSide (TRACKBAR_INFO *infoPtr, INT fLocation)
1438 {
1439     INT fTemp = infoPtr->fLocation;
1440
1441     infoPtr->fLocation = fLocation;
1442
1443     return fTemp;
1444 }
1445
1446
1447 static inline LRESULT
1448 TRACKBAR_SetToolTips (TRACKBAR_INFO *infoPtr, HWND hwndTT)
1449 {
1450     infoPtr->hwndToolTip = hwndTT;
1451
1452     return 0;
1453 }
1454
1455
1456 static inline BOOL
1457 TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
1458 {
1459     BOOL bTemp = infoPtr->bUnicode;
1460
1461     infoPtr->bUnicode = fUnicode;
1462
1463     return bTemp;
1464 }
1465
1466
1467 static LRESULT
1468 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
1469 {
1470     RECT rect;
1471     int clientWidth, clientMetric;
1472
1473     /* initial thumb length */
1474     clientMetric = (infoPtr->dwStyle & TBS_ENABLESELRANGE) ? 23 : 21;
1475     GetClientRect(infoPtr->hwndSelf,&rect);
1476     if (infoPtr->dwStyle & TBS_VERT) {
1477         clientWidth = rect.right - rect.left;
1478     } else {
1479         clientWidth = rect.bottom - rect.top;
1480     }
1481     if (clientWidth >= clientMetric)
1482         infoPtr->uThumbLen = clientMetric;
1483     else
1484         infoPtr->uThumbLen = clientWidth > 9 ? clientWidth - 6 : 4;
1485
1486     TRACKBAR_CalcChannel (infoPtr);
1487     TRACKBAR_UpdateThumb (infoPtr);
1488     infoPtr->flags &= ~TB_SELECTIONCHANGED;
1489
1490     return 0;
1491 }
1492
1493
1494 static LRESULT
1495 TRACKBAR_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
1496 {
1497     TRACKBAR_INFO *infoPtr;
1498
1499     infoPtr = Alloc (sizeof(TRACKBAR_INFO));
1500     if (!infoPtr) return -1;
1501     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1502
1503     /* set default values */
1504     infoPtr->hwndSelf  = hwnd;
1505     infoPtr->dwStyle   = lpcs->style;
1506     infoPtr->lRangeMin = 0;
1507     infoPtr->lRangeMax = 100;
1508     infoPtr->lLineSize = 1;
1509     infoPtr->lPageSize = TB_DEFAULTPAGESIZE;
1510     infoPtr->lSelMin   = 0;
1511     infoPtr->lSelMax   = 0;
1512     infoPtr->lPos      = 0;
1513     infoPtr->fLocation = TBTS_TOP;
1514     infoPtr->uNumTics  = 0;    /* start and end tic are not included in count*/
1515     infoPtr->uTicFreq  = 1;
1516     infoPtr->tics      = NULL;
1517     infoPtr->hwndNotify= lpcs->hwndParent;
1518
1519     TRACKBAR_InitializeThumb (infoPtr);
1520
1521     /* Create tooltip control */
1522     if (infoPtr->dwStyle & TBS_TOOLTIPS) {
1523
1524         infoPtr->hwndToolTip =
1525             CreateWindowExW (0, TOOLTIPS_CLASSW, NULL, WS_POPUP,
1526                              CW_USEDEFAULT, CW_USEDEFAULT,
1527                              CW_USEDEFAULT, CW_USEDEFAULT,
1528                              hwnd, 0, 0, 0);
1529
1530         if (infoPtr->hwndToolTip) {
1531             TTTOOLINFOW ti;
1532             WCHAR wEmpty = 0;
1533             ZeroMemory (&ti, sizeof(ti));
1534             ti.cbSize   = sizeof(ti);
1535             ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
1536             ti.hwnd     = hwnd;
1537             ti.lpszText = &wEmpty;
1538
1539             SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
1540          }
1541     }
1542
1543     OpenThemeData (hwnd, themeClass);
1544
1545     return 0;
1546 }
1547
1548
1549 static LRESULT
1550 TRACKBAR_Destroy (TRACKBAR_INFO *infoPtr)
1551 {
1552     /* delete tooltip control */
1553     if (infoPtr->hwndToolTip)
1554         DestroyWindow (infoPtr->hwndToolTip);
1555
1556     Free (infoPtr->tics);
1557     infoPtr->tics = NULL;
1558
1559     SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
1560     CloseThemeData (GetWindowTheme (infoPtr->hwndSelf));
1561     Free (infoPtr);
1562
1563     return 0;
1564 }
1565
1566
1567 static LRESULT
1568 TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr)
1569 {
1570     TRACE("\n");
1571     infoPtr->bFocussed = FALSE;
1572     TRACKBAR_InvalidateAll(infoPtr);
1573
1574     return 0;
1575 }
1576
1577 static LRESULT
1578 TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, INT x, INT y)
1579 {
1580     POINT clickPoint;
1581
1582     clickPoint.x = x;
1583     clickPoint.y = y;
1584
1585     SetFocus(infoPtr->hwndSelf);
1586
1587     if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
1588         infoPtr->flags |= TB_DRAG_MODE;
1589         SetCapture (infoPtr->hwndSelf);
1590         TRACKBAR_UpdateToolTip (infoPtr);
1591         TRACKBAR_ActivateToolTip (infoPtr, TRUE);
1592         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1593     } else {
1594         LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
1595         if (dir == 0) return 0;
1596         infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
1597         TRACKBAR_AutoPage (infoPtr, clickPoint);
1598         SetCapture (infoPtr->hwndSelf);
1599         SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
1600     }
1601
1602     return 0;
1603 }
1604
1605
1606 static LRESULT
1607 TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr)
1608 {
1609     if (infoPtr->flags & TB_DRAG_MODE) {
1610         notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
1611         notify_with_scroll (infoPtr, TB_ENDTRACK);
1612         infoPtr->flags &= ~TB_DRAG_MODE;
1613         ReleaseCapture ();
1614         notify(infoPtr, NM_RELEASEDCAPTURE);
1615         TRACKBAR_ActivateToolTip(infoPtr, FALSE);
1616         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1617     }
1618     if (infoPtr->flags & TB_AUTO_PAGE) {
1619         KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
1620         infoPtr->flags &= ~TB_AUTO_PAGE;
1621         notify_with_scroll (infoPtr, TB_ENDTRACK);
1622         ReleaseCapture ();
1623         notify(infoPtr, NM_RELEASEDCAPTURE);
1624     }
1625
1626     return 0;
1627 }
1628
1629
1630 static LRESULT
1631 TRACKBAR_CaptureChanged (const TRACKBAR_INFO *infoPtr)
1632 {
1633     notify_with_scroll (infoPtr, TB_ENDTRACK);
1634     return 0;
1635 }
1636
1637
1638 static LRESULT
1639 TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
1640 {
1641     if (hdc) {
1642         TRACKBAR_Refresh(infoPtr, hdc);
1643     } else {
1644         PAINTSTRUCT ps;
1645         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
1646         TRACKBAR_Refresh (infoPtr, hdc);
1647         EndPaint (infoPtr->hwndSelf, &ps);
1648     }
1649
1650     return 0;
1651 }
1652
1653
1654 static LRESULT
1655 TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr)
1656 {
1657     TRACE("\n");
1658     infoPtr->bFocussed = TRUE;
1659     TRACKBAR_InvalidateAll(infoPtr);
1660
1661     return 0;
1662 }
1663
1664
1665 static LRESULT
1666 TRACKBAR_Size (TRACKBAR_INFO *infoPtr)
1667 {
1668     if (infoPtr->dwStyle & TBS_FIXEDLENGTH)
1669     {
1670         TRACKBAR_CalcChannel(infoPtr);
1671         TRACKBAR_UpdateThumb(infoPtr);
1672     }
1673     else
1674         TRACKBAR_InitializeThumb(infoPtr);
1675     TRACKBAR_AlignBuddies (infoPtr);
1676     TRACKBAR_InvalidateAll(infoPtr);
1677
1678     return 0;
1679 }
1680
1681 static LRESULT
1682 TRACKBAR_StyleChanged (TRACKBAR_INFO *infoPtr, WPARAM wStyleType,
1683                        const STYLESTRUCT *lpss)
1684 {
1685     if (wStyleType != GWL_STYLE) return 0;
1686
1687     infoPtr->dwStyle = lpss->styleNew;
1688
1689     return 0;
1690 }
1691
1692 static LRESULT
1693 TRACKBAR_Timer (TRACKBAR_INFO *infoPtr)
1694 {
1695     if (infoPtr->flags & TB_AUTO_PAGE) {
1696         POINT pt;
1697         if (GetCursorPos(&pt))
1698             if (ScreenToClient(infoPtr->hwndSelf, &pt))
1699                 TRACKBAR_AutoPage(infoPtr, pt);
1700     }
1701     return 0;
1702 }
1703
1704
1705 /* update theme after a WM_THEMECHANGED message */
1706 static LRESULT theme_changed (const TRACKBAR_INFO* infoPtr)
1707 {
1708     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
1709     CloseThemeData (theme);
1710     OpenThemeData (infoPtr->hwndSelf, themeClass);
1711     return 0;
1712 }
1713
1714
1715 static LRESULT
1716 TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, INT x, INT y)
1717 {
1718     INT clickPlace = (infoPtr->dwStyle & TBS_VERT) ? y : x;
1719     LONG dragPos, oldPos = infoPtr->lPos;
1720
1721     TRACE("(x=%d. y=%d)\n", x, y);
1722
1723     if (infoPtr->flags & TB_AUTO_PAGE) {
1724         POINT pt;
1725         pt.x = x;
1726         pt.y = y;
1727         TRACKBAR_AutoPage (infoPtr, pt);
1728         return TRUE;
1729     }
1730
1731     if (!(infoPtr->flags & TB_DRAG_MODE))
1732     {
1733         if (GetWindowTheme (infoPtr->hwndSelf))
1734         {
1735             DWORD oldFlags = infoPtr->flags;
1736             POINT pt;
1737             pt.x = x;
1738             pt.y = y;
1739             if (PtInRect (&infoPtr->rcThumb, pt))
1740             {
1741                 TRACKMOUSEEVENT tme;
1742                 tme.cbSize = sizeof( tme );
1743                 tme.dwFlags = TME_LEAVE;
1744                 tme.hwndTrack = infoPtr->hwndSelf;
1745                 TrackMouseEvent( &tme );
1746                 infoPtr->flags |= TB_THUMB_HOT;
1747             }
1748             else
1749             {
1750                 TRACKMOUSEEVENT tme;
1751                 tme.cbSize = sizeof( tme );
1752                 tme.dwFlags = TME_CANCEL;
1753                 tme.hwndTrack = infoPtr->hwndSelf;
1754                 TrackMouseEvent( &tme );
1755                 infoPtr->flags &= ~TB_THUMB_HOT;
1756             }
1757             if (oldFlags != infoPtr->flags) InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1758         }
1759         return TRUE;
1760     }
1761
1762     dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace);
1763
1764     if (dragPos == oldPos) return TRUE;
1765
1766     infoPtr->lPos = dragPos;
1767     TRACKBAR_UpdateThumb (infoPtr);
1768
1769     notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));
1770
1771     TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
1772     UpdateWindow (infoPtr->hwndSelf);
1773
1774     return TRUE;
1775 }
1776
1777 static BOOL
1778 TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey)
1779 {
1780     BOOL downIsLeft = infoPtr->dwStyle & TBS_DOWNISLEFT;
1781     BOOL vert = infoPtr->dwStyle & TBS_VERT;
1782     LONG pos = infoPtr->lPos;
1783
1784     TRACE("%x\n", nVirtKey);
1785
1786     switch (nVirtKey) {
1787     case VK_UP:
1788         if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1789         else TRACKBAR_LineUp(infoPtr);
1790         break;
1791     case VK_LEFT:
1792         if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1793         else TRACKBAR_LineUp(infoPtr);
1794         break;
1795     case VK_DOWN:
1796         if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1797         else TRACKBAR_LineDown(infoPtr);
1798         break;
1799     case VK_RIGHT:
1800         if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1801         else TRACKBAR_LineDown(infoPtr);
1802         break;
1803     case VK_NEXT:
1804         if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
1805         else TRACKBAR_PageDown(infoPtr);
1806         break;
1807     case VK_PRIOR:
1808         if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
1809         else TRACKBAR_PageUp(infoPtr);
1810         break;
1811     case VK_HOME:
1812         if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
1813         infoPtr->lPos = infoPtr->lRangeMin;
1814         notify_with_scroll (infoPtr, TB_TOP);
1815         break;
1816     case VK_END:
1817         if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
1818         infoPtr->lPos = infoPtr->lRangeMax;
1819         notify_with_scroll (infoPtr, TB_BOTTOM);
1820         break;
1821     }
1822
1823     if (pos != infoPtr->lPos) {
1824         TRACKBAR_UpdateThumb (infoPtr);
1825         TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
1826     }
1827
1828     return TRUE;
1829 }
1830
1831
1832 static inline BOOL
1833 TRACKBAR_KeyUp (const TRACKBAR_INFO *infoPtr, INT nVirtKey)
1834 {
1835     switch (nVirtKey) {
1836     case VK_LEFT:
1837     case VK_UP:
1838     case VK_RIGHT:
1839     case VK_DOWN:
1840     case VK_NEXT:
1841     case VK_PRIOR:
1842     case VK_HOME:
1843     case VK_END:
1844         notify_with_scroll (infoPtr, TB_ENDTRACK);
1845     }
1846     return TRUE;
1847 }
1848
1849
1850 static LRESULT
1851 TRACKBAR_Enable (TRACKBAR_INFO *infoPtr, BOOL enable)
1852 {
1853     if (enable)
1854         infoPtr->dwStyle &= ~WS_DISABLED;
1855     else
1856         infoPtr->dwStyle |= WS_DISABLED;
1857
1858     InvalidateRect(infoPtr->hwndSelf, &infoPtr->rcThumb, TRUE);
1859
1860     return 1;
1861 }
1862
1863 static LRESULT WINAPI
1864 TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1865 {
1866     TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);
1867
1868     TRACE("hwnd=%p msg=%x wparam=%lx lparam=%lx\n", hwnd, uMsg, wParam, lParam);
1869
1870     if (!infoPtr && (uMsg != WM_CREATE))
1871         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1872
1873     switch (uMsg)
1874     {
1875     case TBM_CLEARSEL:
1876         return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);
1877
1878     case TBM_CLEARTICS:
1879         return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);
1880
1881     case TBM_GETBUDDY:
1882         return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);
1883
1884     case TBM_GETCHANNELRECT:
1885         return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);
1886
1887     case TBM_GETLINESIZE:
1888         return infoPtr->lLineSize;
1889
1890     case TBM_GETNUMTICS:
1891         return TRACKBAR_GetNumTics (infoPtr);
1892
1893     case TBM_GETPAGESIZE:
1894         return infoPtr->lPageSize;
1895
1896     case TBM_GETPOS:
1897         return infoPtr->lPos;
1898
1899     case TBM_GETPTICS:
1900         return (LRESULT)infoPtr->tics;
1901
1902     case TBM_GETRANGEMAX:
1903         return infoPtr->lRangeMax;
1904
1905     case TBM_GETRANGEMIN:
1906         return infoPtr->lRangeMin;
1907
1908     case TBM_GETSELEND:
1909         return infoPtr->lSelMax;
1910
1911     case TBM_GETSELSTART:
1912         return infoPtr->lSelMin;
1913
1914     case TBM_GETTHUMBLENGTH:
1915         return infoPtr->uThumbLen;
1916
1917     case TBM_GETTHUMBRECT:
1918         return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);
1919
1920     case TBM_GETTIC:
1921         return TRACKBAR_GetTic (infoPtr, (INT)wParam);
1922
1923     case TBM_GETTICPOS:
1924         return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);
1925
1926     case TBM_GETTOOLTIPS:
1927         return (LRESULT)infoPtr->hwndToolTip;
1928
1929     case TBM_GETUNICODEFORMAT:
1930         return infoPtr->bUnicode;
1931
1932     case TBM_SETBUDDY:
1933         return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);
1934
1935     case TBM_SETLINESIZE:
1936         return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);
1937
1938     case TBM_SETPAGESIZE:
1939         return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);
1940
1941     case TBM_SETPOS:
1942         return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);
1943
1944     case TBM_SETRANGE:
1945         return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);
1946
1947     case TBM_SETRANGEMAX:
1948         return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);
1949
1950     case TBM_SETRANGEMIN:
1951         return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);
1952
1953     case TBM_SETSEL:
1954         return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);
1955
1956     case TBM_SETSELEND:
1957         return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);
1958
1959     case TBM_SETSELSTART:
1960         return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);
1961
1962     case TBM_SETTHUMBLENGTH:
1963         return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);
1964
1965     case TBM_SETTIC:
1966         return TRACKBAR_SetTic (infoPtr, (LONG)lParam);
1967
1968     case TBM_SETTICFREQ:
1969         return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);
1970
1971     case TBM_SETTIPSIDE:
1972         return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);
1973
1974     case TBM_SETTOOLTIPS:
1975         return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);
1976
1977     case TBM_SETUNICODEFORMAT:
1978         return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);
1979
1980
1981     case WM_CAPTURECHANGED:
1982         if (hwnd == (HWND)lParam) return 0;
1983         return TRACKBAR_CaptureChanged (infoPtr);
1984
1985     case WM_CREATE:
1986         return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);
1987
1988     case WM_DESTROY:
1989         return TRACKBAR_Destroy (infoPtr);
1990
1991     case WM_ENABLE:
1992         return TRACKBAR_Enable (infoPtr, (BOOL)wParam);
1993
1994     case WM_ERASEBKGND:
1995         return 0;
1996
1997     case WM_GETDLGCODE:
1998         return DLGC_WANTARROWS;
1999
2000     case WM_KEYDOWN:
2001         return TRACKBAR_KeyDown (infoPtr, (INT)wParam);
2002
2003     case WM_KEYUP:
2004         return TRACKBAR_KeyUp (infoPtr, (INT)wParam);
2005
2006     case WM_KILLFOCUS:
2007         return TRACKBAR_KillFocus (infoPtr);
2008
2009     case WM_LBUTTONDOWN:
2010         return TRACKBAR_LButtonDown (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2011
2012     case WM_LBUTTONUP:
2013         return TRACKBAR_LButtonUp (infoPtr);
2014
2015     case WM_MOUSELEAVE:
2016         infoPtr->flags &= ~TB_THUMB_HOT;
2017         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
2018         return 0;
2019
2020     case WM_MOUSEMOVE:
2021         return TRACKBAR_MouseMove (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2022
2023     case WM_PRINTCLIENT:
2024     case WM_PAINT:
2025         return TRACKBAR_Paint (infoPtr, (HDC)wParam);
2026
2027     case WM_SETFOCUS:
2028         return TRACKBAR_SetFocus (infoPtr);
2029
2030     case WM_SIZE:
2031         return TRACKBAR_Size (infoPtr);
2032
2033     case WM_STYLECHANGED:
2034         return TRACKBAR_StyleChanged (infoPtr, wParam, (LPSTYLESTRUCT)lParam);
2035
2036     case WM_THEMECHANGED:
2037         return theme_changed (infoPtr);
2038
2039     case WM_TIMER:
2040         return TRACKBAR_Timer (infoPtr);
2041
2042     case WM_WININICHANGE:
2043         return TRACKBAR_InitializeThumb (infoPtr);
2044
2045     default:
2046         if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
2047             ERR("unknown msg %04x wp=%08lx lp=%08lx\n", uMsg, wParam, lParam);
2048         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
2049     }
2050 }
2051
2052
2053 void TRACKBAR_Register (void)
2054 {
2055     WNDCLASSW wndClass;
2056
2057     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
2058     wndClass.style         = CS_GLOBALCLASS;
2059     wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
2060     wndClass.cbClsExtra    = 0;
2061     wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
2062     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
2063     wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
2064     wndClass.lpszClassName = TRACKBAR_CLASSW;
2065
2066     RegisterClassW (&wndClass);
2067 }
2068
2069
2070 void TRACKBAR_Unregister (void)
2071 {
2072     UnregisterClassW (TRACKBAR_CLASSW, NULL);
2073 }