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
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <math.h>
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "wingdi.h"
  32 #include "winuser.h"
  33 #include "winnls.h"
  34 #include "commctrl.h"
  35 #include "uxtheme.h"
  36 #include "vssym32.h"
  37 #include "wine/debug.h"
  38
  39 #include "comctl32.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(trackbar);
  42
  43 typedef struct
  44 {
  45     HWND hwndSelf;
  46     DWORD dwStyle;
  47     LONG lRangeMin;
  48     LONG lRangeMax;
  49     LONG lLineSize;
  50     LONG lPageSize;
  51     LONG lSelMin;
  52     LONG lSelMax;
  53     LONG lPos;
  54     UINT uThumbLen;
  55     UINT uNumTics;
  56     UINT uTicFreq;
  57     HWND hwndNotify;
  58     HWND hwndToolTip;
  59     HWND hwndBuddyLA;
  60     HWND hwndBuddyRB;
  61     INT  fLocation;
  62     DWORD flags;
  63     BOOL bUnicode;
  64     RECT rcChannel;
  65     RECT rcSelection;
  66     RECT rcThumb;
  67     LPLONG tics;
  68 } TRACKBAR_INFO;
  69
  70 #define TB_REFRESH_TIMER        1
  71 #define TB_REFRESH_DELAY        500
  72
  73 #define TOOLTIP_OFFSET          2     /* distance from ctrl edge to tooltip */
  74
  75 #define TB_DEFAULTPAGESIZE      20
  76
  77 /* Used by TRACKBAR_Refresh to find out which parts of the control
  78    need to be recalculated */
  79
  80 #define TB_THUMBPOSCHANGED      0x00000001
  81 #define TB_THUMBSIZECHANGED     0x00000002
  82 #define TB_THUMBCHANGED        (TB_THUMBPOSCHANGED | TB_THUMBSIZECHANGED)
  83 #define TB_SELECTIONCHANGED     0x00000004
  84 #define TB_DRAG_MODE            0x00000008     /* we're dragging the slider */
  85 #define TB_AUTO_PAGE_LEFT       0x00000010
  86 #define TB_AUTO_PAGE_RIGHT      0x00000020
  87 #define TB_AUTO_PAGE           (TB_AUTO_PAGE_LEFT | TB_AUTO_PAGE_RIGHT)
  88 #define TB_THUMB_HOT            0x00000040    /* mouse hovers above thumb */
  89
  90 /* Page was set with TBM_SETPAGESIZE */
  91 #define TB_USER_PAGE            0x00000080
  92 #define TB_IS_FOCUSED           0x00000100
  93
  94 /* helper defines for TRACKBAR_DrawTic */
  95 #define TIC_EDGE                0x20
  96 #define TIC_SELECTIONMARKMAX    0x80
  97 #define TIC_SELECTIONMARKMIN    0x100
  98 #define TIC_SELECTIONMARK       (TIC_SELECTIONMARKMAX | TIC_SELECTIONMARKMIN)
  99
 100 static const WCHAR themeClass[] = { 'T','r','a','c','k','b','a','r',0 };
 101
 102 static inline int
 103 notify_customdraw (const TRACKBAR_INFO *infoPtr, NMCUSTOMDRAW *pnmcd, int stage)
 104 {
 105     pnmcd->dwDrawStage = stage;
 106     return SendMessageW (infoPtr->hwndNotify, WM_NOTIFY,
 107                          pnmcd->hdr.idFrom, (LPARAM)pnmcd);
 108 }
 109
 110 static LRESULT notify_hdr (const TRACKBAR_INFO *infoPtr, INT code, LPNMHDR pnmh)
 111 {
 112     LRESULT result;
 113
 114     TRACE("(code=%d)\n", code);
 115
 116     pnmh->hwndFrom = infoPtr->hwndSelf;
 117     pnmh->idFrom = GetWindowLongPtrW(infoPtr->hwndSelf, GWLP_ID);
 118     pnmh->code = code;
 119     result = SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, pnmh->idFrom, (LPARAM)pnmh);
 120
 121     TRACE("  <= %ld\n", result);
 122
 123     return result;
 124 }
 125
 126 static inline int notify (const TRACKBAR_INFO *infoPtr, INT code)
 127 {
 128     NMHDR nmh;
 129     return notify_hdr(infoPtr, code, &nmh);
 130 }
 131
 132 static void notify_with_scroll (const TRACKBAR_INFO *infoPtr, UINT code)
 133 {
 134     UINT scroll = infoPtr->dwStyle & TBS_VERT ? WM_VSCROLL : WM_HSCROLL;
 135
 136     TRACE("%x\n", code);
 137
 138     SendMessageW (infoPtr->hwndNotify, scroll, code, (LPARAM)infoPtr->hwndSelf);
 139 }
 140
 141 static void TRACKBAR_RecalculateTics (TRACKBAR_INFO *infoPtr)
 142 {
 143     int tic;
 144     unsigned nrTics, i;
 145
 146     if (infoPtr->uTicFreq && infoPtr->lRangeMax >= infoPtr->lRangeMin) {
 147         nrTics=(infoPtr->lRangeMax - infoPtr->lRangeMin)/infoPtr->uTicFreq;
 148         /* don't add extra tic if there's no remainder */
 149         if (nrTics && ((infoPtr->lRangeMax - infoPtr->lRangeMin) % infoPtr->uTicFreq == 0))
 150           nrTics--;
 151     }
 152     else {
 153         Free (infoPtr->tics);
 154         infoPtr->tics = NULL;
 155         infoPtr->uNumTics = 0;
 156         return;
 157     }
 158
 159     if (nrTics != infoPtr->uNumTics) {
 160         infoPtr->tics=ReAlloc (infoPtr->tics,
 161                                         (nrTics+1)*sizeof (DWORD));
 162         if (!infoPtr->tics) {
 163             infoPtr->uNumTics = 0;
 164             notify(infoPtr, NM_OUTOFMEMORY);
 165             return;
 166         }
 167         infoPtr->uNumTics = nrTics;
 168     }
 169
 170     tic = infoPtr->lRangeMin + infoPtr->uTicFreq;
 171     for (i = 0; i < nrTics; i++, tic += infoPtr->uTicFreq)
 172         infoPtr->tics[i] = tic;
 173 }
 174
 175 /* converts from physical (mouse) position to logical position
 176    (in range of trackbar) */
 177
 178 static inline LONG
 179 TRACKBAR_ConvertPlaceToPosition (const TRACKBAR_INFO *infoPtr, int place)
 180 {
 181     double range, width, pos, offsetthumb;
 182
 183     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 184     if (infoPtr->dwStyle & TBS_VERT) {
 185         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 186         width = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - (offsetthumb * 2) - 1;
 187         pos = (range*(place - infoPtr->rcChannel.top - offsetthumb)) / width;
 188     } else {
 189         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 190         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - (offsetthumb * 2) - 1;
 191         pos = (range*(place - infoPtr->rcChannel.left - offsetthumb)) / width;
 192     }
 193     pos += infoPtr->lRangeMin;
 194     if (pos > infoPtr->lRangeMax)
 195         pos = infoPtr->lRangeMax;
 196     else if (pos < infoPtr->lRangeMin)
 197         pos = infoPtr->lRangeMin;
 198
 199     TRACE("%.2f\n", pos);
 200     return (LONG)floor(pos + 0.5);
 201 }
 202
 203
 204 /* return: 0> prev, 0 none, >0 next */
 205 static LONG
 206 TRACKBAR_GetAutoPageDirection (const TRACKBAR_INFO *infoPtr, POINT clickPoint)
 207 {
 208     RECT pageRect;
 209
 210     if (infoPtr->dwStyle & TBS_VERT) {
 211         pageRect.top = infoPtr->rcChannel.top;
 212         pageRect.bottom = infoPtr->rcChannel.bottom;
 213         pageRect.left = infoPtr->rcThumb.left;
 214         pageRect.right = infoPtr->rcThumb.right;
 215     } else {
 216         pageRect.top = infoPtr->rcThumb.top;
 217         pageRect.bottom = infoPtr->rcThumb.bottom;
 218         pageRect.left = infoPtr->rcChannel.left;
 219         pageRect.right = infoPtr->rcChannel.right;
 220     }
 221
 222
 223     if (PtInRect(&pageRect, clickPoint))
 224     {
 225         int clickPlace = (infoPtr->dwStyle & TBS_VERT) ? clickPoint.y : clickPoint.x;
 226
 227         LONG clickPos = TRACKBAR_ConvertPlaceToPosition(infoPtr, clickPlace);
 228
 229         return clickPos - infoPtr->lPos;
 230     }
 231
 232     return 0;
 233 }
 234
 235 static inline void
 236 TRACKBAR_PageDown (TRACKBAR_INFO *infoPtr)
 237 {
 238     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 239
 240     infoPtr->lPos += infoPtr->lPageSize;
 241     if (infoPtr->lPos > infoPtr->lRangeMax)
 242         infoPtr->lPos = infoPtr->lRangeMax;
 243     notify_with_scroll (infoPtr, TB_PAGEDOWN);
 244 }
 245
 246
 247 static inline void
 248 TRACKBAR_PageUp (TRACKBAR_INFO *infoPtr)
 249 {
 250     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 251
 252     infoPtr->lPos -= infoPtr->lPageSize;
 253     if (infoPtr->lPos < infoPtr->lRangeMin)
 254         infoPtr->lPos = infoPtr->lRangeMin;
 255     notify_with_scroll (infoPtr, TB_PAGEUP);
 256 }
 257
 258 static inline void TRACKBAR_LineUp(TRACKBAR_INFO *infoPtr)
 259 {
 260     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 261     infoPtr->lPos -= infoPtr->lLineSize;
 262     if (infoPtr->lPos < infoPtr->lRangeMin)
 263         infoPtr->lPos = infoPtr->lRangeMin;
 264     notify_with_scroll (infoPtr, TB_LINEUP);
 265 }
 266
 267 static inline void TRACKBAR_LineDown(TRACKBAR_INFO *infoPtr)
 268 {
 269     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 270     infoPtr->lPos += infoPtr->lLineSize;
 271     if (infoPtr->lPos > infoPtr->lRangeMax)
 272         infoPtr->lPos = infoPtr->lRangeMax;
 273     notify_with_scroll (infoPtr, TB_LINEDOWN);
 274 }
 275
 276 static void
 277 TRACKBAR_CalcChannel (TRACKBAR_INFO *infoPtr)
 278 {
 279     INT cyChannel, offsetthumb, offsetedge;
 280     RECT lpRect, *channel = & infoPtr->rcChannel;
 281
 282     GetClientRect (infoPtr->hwndSelf, &lpRect);
 283
 284     offsetthumb = infoPtr->uThumbLen / 4;
 285     offsetedge  = offsetthumb + 3;
 286     cyChannel   = (infoPtr->dwStyle & TBS_ENABLESELRANGE) ? offsetthumb*3 : 4;
 287     if (infoPtr->dwStyle & TBS_VERT) {
 288         channel->top    = lpRect.top + offsetedge;
 289         channel->bottom = lpRect.bottom - offsetedge;
 290         if (infoPtr->dwStyle & TBS_ENABLESELRANGE)
 291             channel->left = lpRect.left + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 292         else
 293             channel->left = lpRect.left + (infoPtr->uThumbLen / 2) - 1;
 294         if (infoPtr->dwStyle & TBS_BOTH) {
 295             if (infoPtr->dwStyle & TBS_NOTICKS)
 296                 channel->left += 1;
 297             else
 298                 channel->left += 9;
 299         }
 300         else if (infoPtr->dwStyle & TBS_TOP) {
 301             if (infoPtr->dwStyle & TBS_NOTICKS)
 302                 channel->left += 2;
 303             else
 304                 channel->left += 10;
 305         }
 306         channel->right = channel->left + cyChannel;
 307     } else {
 308         channel->left = lpRect.left + offsetedge;
 309         channel->right = lpRect.right - offsetedge;
 310         if (infoPtr->dwStyle & TBS_ENABLESELRANGE)
 311             channel->top = lpRect.top + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 312         else
 313             channel->top = lpRect.top + (infoPtr->uThumbLen / 2) - 1;
 314         if (infoPtr->dwStyle & TBS_BOTH) {
 315             if (infoPtr->dwStyle & TBS_NOTICKS)
 316                 channel->top += 1;
 317             else
 318                 channel->top += 9;
 319         }
 320         else if (infoPtr->dwStyle & TBS_TOP) {
 321             if (infoPtr->dwStyle & TBS_NOTICKS)
 322                 channel->top += 2;
 323             else
 324                 channel->top += 10;
 325         }
 326         channel->bottom   = channel->top + cyChannel;
 327     }
 328 }
 329
 330 static void
 331 TRACKBAR_CalcThumb (const TRACKBAR_INFO *infoPtr, LONG lPos, RECT *thumb)
 332 {
 333     int range, width, height, thumbwidth;
 334     RECT lpRect;
 335
 336     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 337     thumbwidth = (infoPtr->uThumbLen / 2) | 1;
 338
 339     if (!range) range = 1;
 340
 341     GetClientRect(infoPtr->hwndSelf, &lpRect);
 342     if (infoPtr->dwStyle & TBS_VERT)
 343     {
 344         height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - thumbwidth;
 345
 346         if ((infoPtr->dwStyle & (TBS_BOTH | TBS_LEFT)) && !(infoPtr->dwStyle & TBS_NOTICKS))
 347             thumb->left = 10;
 348         else
 349             thumb->left = 2;
 350         thumb->right = thumb->left + infoPtr->uThumbLen;
 351         thumb->top = infoPtr->rcChannel.top +
 352                      (height*(lPos - infoPtr->lRangeMin))/range;
 353         thumb->bottom = thumb->top + thumbwidth;
 354     }
 355     else
 356     {
 357         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - thumbwidth;
 358
 359         thumb->left = infoPtr->rcChannel.left +
 360                       (width*(lPos - infoPtr->lRangeMin))/range;
 361         thumb->right = thumb->left + thumbwidth;
 362         if ((infoPtr->dwStyle & (TBS_BOTH | TBS_TOP)) && !(infoPtr->dwStyle & TBS_NOTICKS))
 363             thumb->top = 10;
 364         else
 365             thumb->top = 2;
 366         thumb->bottom = thumb->top + infoPtr->uThumbLen;
 367     }
 368 }
 369
 370 static inline void
 371 TRACKBAR_UpdateThumb (TRACKBAR_INFO *infoPtr)
 372 {
 373     TRACKBAR_CalcThumb(infoPtr, infoPtr->lPos, &infoPtr->rcThumb);
 374 }
 375
 376 static inline void
 377 TRACKBAR_InvalidateAll (const TRACKBAR_INFO *infoPtr)
 378 {
 379     InvalidateRect(infoPtr->hwndSelf, NULL, FALSE);
 380 }
 381
 382 static void
 383 TRACKBAR_InvalidateThumb (const TRACKBAR_INFO *infoPtr, LONG thumbPos)
 384 {
 385     RECT rcThumb;
 386
 387     TRACKBAR_CalcThumb(infoPtr, thumbPos, &rcThumb);
 388     InflateRect(&rcThumb, 1, 1);
 389     InvalidateRect(infoPtr->hwndSelf, &rcThumb, FALSE);
 390 }
 391
 392 static inline void
 393 TRACKBAR_InvalidateThumbMove (const TRACKBAR_INFO *infoPtr, LONG oldPos, LONG newPos)
 394 {
 395     TRACKBAR_InvalidateThumb (infoPtr, oldPos);
 396     if (newPos != oldPos)
 397         TRACKBAR_InvalidateThumb (infoPtr, newPos);
 398 }
 399
 400 static inline BOOL
 401 TRACKBAR_HasSelection (const TRACKBAR_INFO *infoPtr)
 402 {
 403     return infoPtr->lSelMin != infoPtr->lSelMax;
 404 }
 405
 406 static void
 407 TRACKBAR_CalcSelection (TRACKBAR_INFO *infoPtr)
 408 {
 409     RECT *selection = &infoPtr->rcSelection;
 410     int range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 411     int offsetthumb, height, width;
 412
 413     if (range <= 0) {
 414         SetRectEmpty (selection);
 415     } else {
 416         if (infoPtr->dwStyle & TBS_VERT) {
 417             offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 418             height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - offsetthumb*2;
 419             selection->top    = infoPtr->rcChannel.top + offsetthumb +
 420                 (height*infoPtr->lSelMin)/range;
 421             selection->bottom = infoPtr->rcChannel.top + offsetthumb +
 422                 (height*infoPtr->lSelMax)/range;
 423             selection->left   = infoPtr->rcChannel.left + 3;
 424             selection->right  = infoPtr->rcChannel.right - 3;
 425         } else {
 426             offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 427             width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
 428             selection->left   = infoPtr->rcChannel.left + offsetthumb +
 429                 (width*infoPtr->lSelMin)/range;
 430             selection->right  = infoPtr->rcChannel.left + offsetthumb +
 431                 (width*infoPtr->lSelMax)/range;
 432             selection->top    = infoPtr->rcChannel.top + 3;
 433             selection->bottom = infoPtr->rcChannel.bottom - 3;
 434         }
 435     }
 436
 437     TRACE("selection[%s]\n", wine_dbgstr_rect(selection));
 438 }
 439
 440 static BOOL
 441 TRACKBAR_AutoPage (TRACKBAR_INFO *infoPtr, POINT clickPoint)
 442 {
 443     LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
 444     LONG prevPos = infoPtr->lPos;
 445
 446     TRACE("clickPoint=%s, dir=%d\n", wine_dbgstr_point(&clickPoint), dir);
 447
 448     if (dir > 0 && (infoPtr->flags & TB_AUTO_PAGE_RIGHT))
 449         TRACKBAR_PageDown(infoPtr);
 450     else if (dir < 0 && (infoPtr->flags & TB_AUTO_PAGE_LEFT))
 451         TRACKBAR_PageUp(infoPtr);
 452     else return FALSE;
 453
 454     TRACKBAR_UpdateThumb (infoPtr);
 455     TRACKBAR_InvalidateThumbMove (infoPtr, prevPos, infoPtr->lPos);
 456
 457     return TRUE;
 458 }
 459
 460 /* Trackbar drawing code. I like my spaghetti done milanese.  */
 461
 462 static void
 463 TRACKBAR_DrawChannel (const TRACKBAR_INFO *infoPtr, HDC hdc)
 464 {
 465     RECT rcChannel = infoPtr->rcChannel;
 466     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 467
 468     if (theme)
 469     {
 470         DrawThemeBackground (theme, hdc,
 471             (infoPtr->dwStyle & TBS_VERT) ?
 472                 TKP_TRACKVERT : TKP_TRACK, TKS_NORMAL, &rcChannel, 0);
 473     }
 474     else
 475     {
 476         DrawEdge (hdc, &rcChannel, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
 477         if (infoPtr->dwStyle & TBS_ENABLESELRANGE) {             /* fill the channel */
 478             FillRect (hdc, &rcChannel, GetStockObject(WHITE_BRUSH));
 479             if (TRACKBAR_HasSelection(infoPtr))
 480                 FillRect (hdc, &infoPtr->rcSelection, GetSysColorBrush(COLOR_HIGHLIGHT));
 481         }
 482     }
 483 }
 484
 485 static void
 486 TRACKBAR_DrawOneTic (const TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 487 {
 488     int x, y, ox, oy, range, side, indent = 0, len = 3;
 489     int offsetthumb;
 490     RECT rcTics;
 491
 492     if (flags & TBS_VERT) {
 493         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 494         SetRect(&rcTics, infoPtr->rcThumb.left - 2, infoPtr->rcChannel.top + offsetthumb,
 495                 infoPtr->rcThumb.right + 2, infoPtr->rcChannel.bottom - offsetthumb - 1);
 496     } else {
 497         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 498         SetRect(&rcTics, infoPtr->rcChannel.left + offsetthumb, infoPtr->rcThumb.top - 2,
 499                 infoPtr->rcChannel.right - offsetthumb - 1, infoPtr->rcThumb.bottom + 2);
 500     }
 501
 502     if (flags & (TBS_TOP | TBS_LEFT)) {
 503         x = rcTics.left;
 504         y = rcTics.top;
 505         side = -1;
 506     } else {
 507         x = rcTics.right;
 508         y = rcTics.bottom;
 509         side = 1;
 510     }
 511
 512     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 513     if (range <= 0)
 514       range = 1; /* to avoid division by zero */
 515
 516     if (flags & TIC_SELECTIONMARK) {
 517         indent = (flags & TIC_SELECTIONMARKMIN) ? -1 : 1;
 518     } else if (flags & TIC_EDGE) {
 519         len++;
 520     }
 521
 522     if (flags & TBS_VERT) {
 523         int height = rcTics.bottom - rcTics.top;
 524         y = rcTics.top + (height*(ticPos - infoPtr->lRangeMin))/range;
 525     } else {
 526         int width = rcTics.right - rcTics.left;
 527         x = rcTics.left + (width*(ticPos - infoPtr->lRangeMin))/range;
 528     }
 529
 530     ox = x;
 531     oy = y;
 532     MoveToEx(hdc, x, y, 0);
 533     if (flags & TBS_VERT) x += len * side;
 534     else y += len * side;
 535     LineTo(hdc, x, y);
 536
 537     if (flags & TIC_SELECTIONMARK) {
 538         if (flags & TBS_VERT) {
 539             x -= side;
 540         } else {
 541             y -= side;
 542         }
 543         MoveToEx(hdc, x, y, 0);
 544         if (flags & TBS_VERT) {
 545             y += 2 * indent;
 546         } else {
 547             x += 2 * indent;
 548         }
 549
 550         LineTo(hdc, x, y);
 551         LineTo(hdc, ox, oy);
 552     }
 553 }
 554
 555
 556 static inline void
 557 TRACKBAR_DrawTic (const TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 558 {
 559     if ((flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 560         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags | TBS_LEFT);
 561
 562     if (!(flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 563         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags & ~TBS_LEFT);
 564 }
 565
 566 static void
 567 TRACKBAR_DrawTics (const TRACKBAR_INFO *infoPtr, HDC hdc)
 568 {
 569     unsigned int i;
 570     int ticFlags = infoPtr->dwStyle & 0x0f;
 571     LOGPEN ticPen = { PS_SOLID, {1, 0}, GetSysColor (COLOR_3DDKSHADOW) };
 572     HPEN hOldPen, hTicPen;
 573     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 574
 575     if (theme)
 576     {
 577         int part = (infoPtr->dwStyle & TBS_VERT) ? TKP_TICSVERT : TKP_TICS;
 578         GetThemeColor (theme, part, TSS_NORMAL, TMT_COLOR, &ticPen.lopnColor);
 579     }
 580     /* create the pen to draw the tics with */
 581     hTicPen = CreatePenIndirect(&ticPen);
 582     hOldPen = hTicPen ? SelectObject(hdc, hTicPen) : 0;
 583
 584     /* actually draw the tics */
 585     for (i=0; i<infoPtr->uNumTics; i++)
 586         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->tics[i], ticFlags);
 587
 588     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMin, ticFlags | TIC_EDGE);
 589     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMax, ticFlags | TIC_EDGE);
 590
 591     if ((infoPtr->dwStyle & TBS_ENABLESELRANGE) && TRACKBAR_HasSelection(infoPtr)) {
 592         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMin,
 593                           ticFlags | TIC_SELECTIONMARKMIN);
 594         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMax,
 595                           ticFlags | TIC_SELECTIONMARKMAX);
 596     }
 597
 598     /* clean up the pen, if we created one */
 599     if (hTicPen) {
 600         SelectObject(hdc, hOldPen);
 601         DeleteObject(hTicPen);
 602     }
 603 }
 604
 605 static int
 606 TRACKBAR_FillThumb (const TRACKBAR_INFO *infoPtr, HDC hdc, HBRUSH hbrush)
 607 {
 608     const RECT *thumb = &infoPtr->rcThumb;
 609     POINT points[6];
 610     int PointDepth;
 611     HBRUSH oldbr;
 612
 613     if (infoPtr->dwStyle & TBS_BOTH)
 614     {
 615         FillRect(hdc, thumb, hbrush);
 616         return 0;
 617     }
 618
 619     if (infoPtr->dwStyle & TBS_VERT)
 620     {
 621         PointDepth = (thumb->bottom - thumb->top) / 2;
 622         if (infoPtr->dwStyle & TBS_LEFT)
 623         {
 624             points[0].x = thumb->right-1;
 625             points[0].y = thumb->top;
 626             points[1].x = thumb->right-1;
 627             points[1].y = thumb->bottom-1;
 628             points[2].x = thumb->left + PointDepth;
 629             points[2].y = thumb->bottom-1;
 630             points[3].x = thumb->left;
 631             points[3].y = thumb->top + PointDepth;
 632             points[4].x = thumb->left + PointDepth;
 633             points[4].y = thumb->top;
 634             points[5].x = points[0].x;
 635             points[5].y = points[0].y;
 636         }
 637         else
 638         {
 639             points[0].x = thumb->right;
 640             points[0].y = thumb->top + PointDepth;
 641             points[1].x = thumb->right - PointDepth;
 642             points[1].y = thumb->bottom-1;
 643             points[2].x = thumb->left;
 644             points[2].y = thumb->bottom-1;
 645             points[3].x = thumb->left;
 646             points[3].y = thumb->top;
 647             points[4].x = thumb->right - PointDepth;
 648             points[4].y = thumb->top;
 649             points[5].x = points[0].x;
 650             points[5].y = points[0].y;
 651         }
 652     }
 653     else
 654     {
 655         PointDepth = (thumb->right - thumb->left) / 2;
 656         if (infoPtr->dwStyle & TBS_TOP)
 657         {
 658             points[0].x = thumb->left + PointDepth;
 659             points[0].y = thumb->top+1;
 660             points[1].x = thumb->right-1;
 661             points[1].y = thumb->top + PointDepth + 1;
 662             points[2].x = thumb->right-1;
 663             points[2].y = thumb->bottom-1;
 664             points[3].x = thumb->left;
 665             points[3].y = thumb->bottom-1;
 666             points[4].x = thumb->left;
 667             points[4].y = thumb->top + PointDepth + 1;
 668             points[5].x = points[0].x;
 669             points[5].y = points[0].y;
 670         }
 671         else
 672         {
 673             points[0].x = thumb->right-1;
 674             points[0].y = thumb->top;
 675             points[1].x = thumb->right-1;
 676             points[1].y = thumb->bottom - PointDepth - 1;
 677             points[2].x = thumb->left + PointDepth;
 678             points[2].y = thumb->bottom-1;
 679             points[3].x = thumb->left;
 680             points[3].y = thumb->bottom - PointDepth - 1;
 681             points[4].x = thumb->left;
 682             points[4].y = thumb->top;
 683             points[5].x = points[0].x;
 684             points[5].y = points[0].y;
 685         }
 686     }
 687
 688     oldbr = SelectObject(hdc, hbrush);
 689     SetPolyFillMode(hdc, WINDING);
 690     Polygon(hdc, points, ARRAY_SIZE(points));
 691     SelectObject(hdc, oldbr);
 692
 693     return PointDepth;
 694 }
 695
 696 static void
 697 TRACKBAR_DrawThumb (TRACKBAR_INFO *infoPtr, HDC hdc)
 698 {
 699     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 700     int PointDepth;
 701     HBRUSH brush;
 702
 703     if (theme)
 704     {
 705         int partId;
 706         int stateId;
 707         if (infoPtr->dwStyle & TBS_BOTH)
 708             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBVERT : TKP_THUMB;
 709         else if (infoPtr->dwStyle & TBS_LEFT)
 710             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBLEFT : TKP_THUMBTOP;
 711         else
 712             partId = (infoPtr->dwStyle & TBS_VERT) ? TKP_THUMBRIGHT : TKP_THUMBBOTTOM;
 713
 714         if (infoPtr->dwStyle & WS_DISABLED)
 715             stateId = TUS_DISABLED;
 716         else if (infoPtr->flags & TB_DRAG_MODE)
 717             stateId = TUS_PRESSED;
 718         else if (infoPtr->flags & TB_THUMB_HOT)
 719             stateId = TUS_HOT;
 720         else
 721             stateId = TUS_NORMAL;
 722
 723         DrawThemeBackground (theme, hdc, partId, stateId, &infoPtr->rcThumb, NULL);
 724
 725         return;
 726     }
 727
 728     if (infoPtr->dwStyle & WS_DISABLED || infoPtr->flags & TB_DRAG_MODE)
 729     {
 730         if (comctl32_color.clr3dHilight == comctl32_color.clrWindow)
 731             brush = COMCTL32_hPattern55AABrush;
 732         else
 733             brush = GetSysColorBrush(COLOR_SCROLLBAR);
 734
 735         SetTextColor(hdc, comctl32_color.clr3dFace);
 736         SetBkColor(hdc, comctl32_color.clr3dHilight);
 737     }
 738     else
 739         brush = GetSysColorBrush(COLOR_BTNFACE);
 740
 741     PointDepth = TRACKBAR_FillThumb(infoPtr, hdc, brush);
 742
 743     if (infoPtr->dwStyle & TBS_BOTH)
 744     {
 745        DrawEdge(hdc, &infoPtr->rcThumb, EDGE_RAISED, BF_RECT | BF_SOFT);
 746        return;
 747     }
 748     else
 749     {
 750         RECT thumb = infoPtr->rcThumb;
 751
 752         if (infoPtr->dwStyle & TBS_VERT)
 753         {
 754           if (infoPtr->dwStyle & TBS_LEFT)
 755           {
 756             /* rectangular part */
 757             thumb.left += PointDepth;
 758             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_TOP | BF_RIGHT | BF_BOTTOM | BF_SOFT);
 759
 760             /* light edge */
 761             thumb.left -= PointDepth;
 762             thumb.right = thumb.left + PointDepth;
 763             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 764             thumb.top = infoPtr->rcThumb.top;
 765             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPRIGHT | BF_SOFT);
 766
 767             /* shadowed edge */
 768             thumb.top += PointDepth;
 769             thumb.bottom += PointDepth;
 770             DrawEdge(hdc, &thumb, EDGE_SUNKEN, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 771             return;
 772           }
 773           else
 774           {
 775             /* rectangular part */
 776             thumb.right -= PointDepth;
 777             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_TOP | BF_LEFT | BF_BOTTOM | BF_SOFT);
 778
 779             /* light edge */
 780             thumb.left = thumb.right;
 781             thumb.right += PointDepth + 1;
 782             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 783             thumb.top = infoPtr->rcThumb.top;
 784             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 785
 786             /* shadowed edge */
 787             thumb.top += PointDepth;
 788             thumb.bottom += PointDepth;
 789             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT);
 790           }
 791         }
 792         else
 793         {
 794           if (infoPtr->dwStyle & TBS_TOP)
 795           {
 796             /* rectangular part */
 797             thumb.top += PointDepth;
 798             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_LEFT | BF_BOTTOM | BF_RIGHT | BF_SOFT);
 799
 800             /* light edge */
 801             thumb.left = infoPtr->rcThumb.left;
 802             thumb.right = thumb.left + PointDepth;
 803             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 804             thumb.top -= PointDepth;
 805             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPRIGHT | BF_SOFT);
 806
 807             /* shadowed edge */
 808             thumb.left += PointDepth;
 809             thumb.right += PointDepth;
 810             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMRIGHT | BF_SOFT);
 811           }
 812           else
 813           {
 814             /* rectangular part */
 815             thumb.bottom -= PointDepth;
 816             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_LEFT | BF_TOP | BF_RIGHT | BF_SOFT);
 817
 818             /* light edge */
 819             thumb.left = infoPtr->rcThumb.left;
 820             thumb.right = thumb.left + PointDepth;
 821             thumb.top = infoPtr->rcThumb.bottom - PointDepth - 1;
 822             thumb.bottom += PointDepth;
 823             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 824
 825             /* shadowed edge */
 826             thumb.left += PointDepth;
 827             thumb.right += PointDepth;
 828             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT);
 829           }
 830         }
 831     }
 832 }
 833
 834
 835 static inline void
 836 TRACKBAR_ActivateToolTip (const TRACKBAR_INFO *infoPtr, BOOL fShow)
 837 {
 838     TTTOOLINFOW ti;
 839
 840     if (!infoPtr->hwndToolTip) return;
 841
 842     ZeroMemory(&ti, sizeof(ti));
 843     ti.cbSize = sizeof(ti);
 844     ti.hwnd   = infoPtr->hwndSelf;
 845
 846     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKACTIVATE, fShow, (LPARAM)&ti);
 847 }
 848
 849
 850 static void
 851 TRACKBAR_UpdateToolTip (const TRACKBAR_INFO *infoPtr)
 852 {
 853     WCHAR buf[80];
 854     static const WCHAR fmt[] = { '%', 'l', 'd', 0 };
 855     TTTOOLINFOW ti;
 856     POINT pt;
 857     RECT rcClient;
 858     LRESULT size;
 859
 860     if (!infoPtr->hwndToolTip) return;
 861
 862     ZeroMemory(&ti, sizeof(ti));
 863     ti.cbSize = sizeof(ti);
 864     ti.hwnd   = infoPtr->hwndSelf;
 865     ti.uFlags = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
 866
 867     wsprintfW (buf, fmt, infoPtr->lPos);
 868     ti.lpszText = buf;
 869     SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 870
 871     GetClientRect (infoPtr->hwndSelf, &rcClient);
 872     size = SendMessageW (infoPtr->hwndToolTip, TTM_GETBUBBLESIZE, 0, (LPARAM)&ti);
 873     if (infoPtr->dwStyle & TBS_VERT) {
 874         if (infoPtr->fLocation == TBTS_LEFT)
 875             pt.x = 0 - LOWORD(size) - TOOLTIP_OFFSET;
 876         else
 877             pt.x = rcClient.right + TOOLTIP_OFFSET;
 878         pt.y = (infoPtr->rcThumb.top + infoPtr->rcThumb.bottom - HIWORD(size))/2;
 879     } else {
 880         if (infoPtr->fLocation == TBTS_TOP)
 881             pt.y = 0 - HIWORD(size) - TOOLTIP_OFFSET;
 882         else
 883             pt.y = rcClient.bottom + TOOLTIP_OFFSET;
 884         pt.x = (infoPtr->rcThumb.left + infoPtr->rcThumb.right - LOWORD(size))/2;
 885     }
 886     ClientToScreen(infoPtr->hwndSelf, &pt);
 887
 888     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKPOSITION,
 889                   0, MAKELPARAM(pt.x, pt.y));
 890 }
 891
 892
 893 static void
 894 TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdcDst)
 895 {
 896     RECT rcClient;
 897     HDC hdc;
 898     HBITMAP hOldBmp = 0, hOffScreenBmp = 0;
 899     NMCUSTOMDRAW nmcd;
 900     int gcdrf, icdrf;
 901
 902     if (infoPtr->flags & TB_THUMBCHANGED) {
 903         TRACKBAR_UpdateThumb (infoPtr);
 904         if (infoPtr->flags & TB_THUMBSIZECHANGED)
 905             TRACKBAR_CalcChannel (infoPtr);
 906     }
 907     if (infoPtr->flags & TB_SELECTIONCHANGED)
 908         TRACKBAR_CalcSelection (infoPtr);
 909
 910     if (infoPtr->flags & TB_DRAG_MODE)
 911         TRACKBAR_UpdateToolTip (infoPtr);
 912
 913     infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
 914
 915     GetClientRect (infoPtr->hwndSelf, &rcClient);
 916
 917     /* try to render offscreen, if we fail, carrry onscreen */
 918     hdc = CreateCompatibleDC(hdcDst);
 919     if (hdc) {
 920         hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
 921         if (hOffScreenBmp) {
 922             hOldBmp = SelectObject(hdc, hOffScreenBmp);
 923         } else {
 924             DeleteObject(hdc);
 925             hdc = hdcDst;
 926         }
 927     } else {
 928         hdc = hdcDst;
 929     }
 930
 931     ZeroMemory(&nmcd, sizeof(nmcd));
 932     nmcd.hdr.hwndFrom = infoPtr->hwndSelf;
 933     nmcd.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
 934     nmcd.hdr.code = NM_CUSTOMDRAW;
 935     nmcd.hdc = hdc;
 936
 937     /* start the paint cycle */
 938     nmcd.rc = rcClient;
 939     gcdrf = notify_customdraw(infoPtr, &nmcd, CDDS_PREPAINT);
 940     if (gcdrf & CDRF_SKIPDEFAULT) goto cleanup;
 941
 942     /* Erase background */
 943     if (gcdrf == CDRF_DODEFAULT ||
 944         notify_customdraw(infoPtr, &nmcd, CDDS_PREERASE) != CDRF_SKIPDEFAULT) {
 945         if (GetWindowTheme (infoPtr->hwndSelf)) {
 946             DrawThemeParentBackground (infoPtr->hwndSelf, hdc, 0);
 947         }
 948         else {
 949             HBRUSH brush = (HBRUSH)SendMessageW(infoPtr->hwndNotify, WM_CTLCOLORSTATIC,
 950                     (WPARAM)hdc, (LPARAM)infoPtr->hwndSelf);
 951             FillRect (hdc, &rcClient, brush ? brush : GetSysColorBrush(COLOR_BTNFACE));
 952         }
 953         if (gcdrf != CDRF_DODEFAULT)
 954             notify_customdraw(infoPtr, &nmcd, CDDS_POSTERASE);
 955     }
 956
 957     /* draw channel */
 958     if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 959         nmcd.dwItemSpec = TBCD_CHANNEL;
 960         nmcd.uItemState = CDIS_DEFAULT;
 961         nmcd.rc = infoPtr->rcChannel;
 962         icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 963     } else icdrf = CDRF_DODEFAULT;
 964     if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 965         TRACKBAR_DrawChannel (infoPtr, hdc);
 966         if (icdrf & CDRF_NOTIFYPOSTPAINT)
 967             notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 968     }
 969
 970
 971     /* draw tics */
 972     if (!(infoPtr->dwStyle & TBS_NOTICKS)) {
 973         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 974             nmcd.dwItemSpec = TBCD_TICS;
 975             nmcd.uItemState = CDIS_DEFAULT;
 976             nmcd.rc = rcClient;
 977             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 978         } else icdrf = CDRF_DODEFAULT;
 979         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 980             TRACKBAR_DrawTics (infoPtr, hdc);
 981             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 982                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 983         }
 984     }
 985
 986     /* draw thumb */
 987     if (!(infoPtr->dwStyle & TBS_NOTHUMB)) {
 988         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 989             nmcd.dwItemSpec = TBCD_THUMB;
 990             nmcd.uItemState = infoPtr->flags & TB_DRAG_MODE ? CDIS_HOT : CDIS_DEFAULT;
 991             nmcd.rc = infoPtr->rcThumb;
 992             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 993         } else icdrf = CDRF_DODEFAULT;
 994         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 995             TRACKBAR_DrawThumb(infoPtr, hdc);
 996             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 997                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 998         }
 999     }
1000
1001     /* draw focus rectangle */
1002     if (infoPtr->flags & TB_IS_FOCUSED) {
1003         DrawFocusRect(hdc, &rcClient);
1004     }
1005
1006     /* finish up the painting */
1007     if (gcdrf & CDRF_NOTIFYPOSTPAINT)
1008         notify_customdraw(infoPtr, &nmcd, CDDS_POSTPAINT);
1009
1010 cleanup:
1011     /* cleanup, if we rendered offscreen */
1012     if (hdc != hdcDst) {
1013         BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
1014         SelectObject(hdc, hOldBmp);
1015         DeleteObject(hOffScreenBmp);
1016         DeleteObject(hdc);
1017     }
1018 }
1019
1020
1021 static void
1022 TRACKBAR_AlignBuddies (const TRACKBAR_INFO *infoPtr)
1023 {
1024     HWND hwndParent = GetParent (infoPtr->hwndSelf);
1025     RECT rcSelf, rcBuddy;
1026     INT x, y;
1027
1028     GetWindowRect (infoPtr->hwndSelf, &rcSelf);
1029     MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcSelf, 2);
1030
1031     /* align buddy left or above */
1032     if (infoPtr->hwndBuddyLA) {
1033         GetWindowRect (infoPtr->hwndBuddyLA, &rcBuddy);
1034         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1035
1036         if (infoPtr->dwStyle & TBS_VERT) {
1037             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1038                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1039             y = rcSelf.top - (rcBuddy.bottom - rcBuddy.top);
1040         }
1041         else {
1042             x = rcSelf.left - (rcBuddy.right - rcBuddy.left);
1043             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1044                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1045         }
1046
1047         SetWindowPos (infoPtr->hwndBuddyLA, 0, x, y, 0, 0,
1048                       SWP_NOZORDER | SWP_NOSIZE);
1049     }
1050
1051
1052     /* align buddy right or below */
1053     if (infoPtr->hwndBuddyRB) {
1054         GetWindowRect (infoPtr->hwndBuddyRB, &rcBuddy);
1055         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1056
1057         if (infoPtr->dwStyle & TBS_VERT) {
1058             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1059                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1060             y = rcSelf.bottom;
1061         }
1062         else {
1063             x = rcSelf.right;
1064             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1065                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1066         }
1067         SetWindowPos (infoPtr->hwndBuddyRB, 0, x, y, 0, 0,
1068                       SWP_NOZORDER | SWP_NOSIZE);
1069     }
1070 }
1071
1072
1073 static LRESULT
1074 TRACKBAR_ClearSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1075 {
1076     infoPtr->lSelMin = 0;
1077     infoPtr->lSelMax = 0;
1078     infoPtr->flags |= TB_SELECTIONCHANGED;
1079
1080     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1081
1082     return 0;
1083 }
1084
1085
1086 static LRESULT
1087 TRACKBAR_ClearTics (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1088 {
1089     if (infoPtr->tics) {
1090         Free (infoPtr->tics);
1091         infoPtr->tics = NULL;
1092         infoPtr->uNumTics = 0;
1093     }
1094
1095     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1096
1097     return 0;
1098 }
1099
1100
1101 static inline LRESULT
1102 TRACKBAR_GetChannelRect (const TRACKBAR_INFO *infoPtr, LPRECT lprc)
1103 {
1104     if (lprc == NULL) return 0;
1105
1106     lprc->left   = infoPtr->rcChannel.left;
1107     lprc->right  = infoPtr->rcChannel.right;
1108     lprc->bottom = infoPtr->rcChannel.bottom;
1109     lprc->top    = infoPtr->rcChannel.top;
1110
1111     return 0;
1112 }
1113
1114
1115 static inline LONG
1116 TRACKBAR_GetNumTics (const TRACKBAR_INFO *infoPtr)
1117 {
1118     if (infoPtr->dwStyle & TBS_NOTICKS) return 0;
1119
1120     return infoPtr->uNumTics + 2;
1121 }
1122
1123
1124 static int __cdecl comp_tics (const void *ap, const void *bp)
1125 {
1126     const DWORD a = *(const DWORD *)ap;
1127     const DWORD b = *(const DWORD *)bp;
1128
1129     TRACE("(a=%d, b=%d)\n", a, b);
1130     if (a < b) return -1;
1131     if (a > b) return 1;
1132     return 0;
1133 }
1134
1135
1136 static inline LONG
1137 TRACKBAR_GetTic (const TRACKBAR_INFO *infoPtr, INT iTic)
1138 {
1139     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1140         return -1;
1141
1142     qsort(infoPtr->tics, infoPtr->uNumTics, sizeof(DWORD), comp_tics);
1143     return infoPtr->tics[iTic];
1144 }
1145
1146
1147 static inline LONG
1148 TRACKBAR_GetTicPos (const TRACKBAR_INFO *infoPtr, INT iTic)
1149 {
1150     LONG range, width, pos, tic;
1151     int offsetthumb;
1152
1153     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1154         return -1;
1155
1156     tic   = TRACKBAR_GetTic (infoPtr, iTic);
1157     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
1158     if (range <= 0) range = 1;
1159     offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
1160     width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
1161     pos   = infoPtr->rcChannel.left + offsetthumb + (width * tic) / range;
1162
1163     return pos;
1164 }
1165
1166
1167 static HWND
1168 TRACKBAR_SetBuddy (TRACKBAR_INFO *infoPtr, BOOL fLocation, HWND hwndBuddy)
1169 {
1170     HWND hwndTemp;
1171
1172     if (fLocation) {
1173         /* buddy is left or above */
1174         hwndTemp = infoPtr->hwndBuddyLA;
1175         infoPtr->hwndBuddyLA = hwndBuddy;
1176     }
1177     else {
1178         /* buddy is right or below */
1179         hwndTemp = infoPtr->hwndBuddyRB;
1180         infoPtr->hwndBuddyRB = hwndBuddy;
1181     }
1182
1183     TRACKBAR_AlignBuddies (infoPtr);
1184
1185     return hwndTemp;
1186 }
1187
1188
1189 static inline LONG
1190 TRACKBAR_SetLineSize (TRACKBAR_INFO *infoPtr, LONG lLineSize)
1191 {
1192     LONG lTemp = infoPtr->lLineSize;
1193
1194     infoPtr->lLineSize = lLineSize;
1195
1196     return lTemp;
1197 }
1198
1199 static void TRACKBAR_UpdatePageSize(TRACKBAR_INFO *infoPtr)
1200 {
1201     if (infoPtr->flags & TB_USER_PAGE)
1202         return;
1203
1204     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1205     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1206 }
1207
1208 static inline LONG
1209 TRACKBAR_SetPageSize (TRACKBAR_INFO *infoPtr, LONG lPageSize)
1210 {
1211     LONG lTemp = infoPtr->lPageSize;
1212
1213     if (lPageSize == -1)
1214     {
1215         infoPtr->flags &= ~TB_USER_PAGE;
1216         TRACKBAR_UpdatePageSize(infoPtr);
1217     }
1218     else
1219     {
1220         infoPtr->flags |= TB_USER_PAGE;
1221         infoPtr->lPageSize = lPageSize;
1222     }
1223
1224     return lTemp;
1225 }
1226
1227
1228 static inline LRESULT
1229 TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
1230 {
1231     LONG oldPos = infoPtr->lPos;
1232     infoPtr->lPos = lPosition;
1233
1234     if (infoPtr->lPos < infoPtr->lRangeMin)
1235         infoPtr->lPos = infoPtr->lRangeMin;
1236
1237     if (infoPtr->lPos > infoPtr->lRangeMax)
1238         infoPtr->lPos = infoPtr->lRangeMax;
1239
1240     if (fPosition && oldPos != lPosition)
1241     {
1242         TRACKBAR_UpdateThumb(infoPtr);
1243         TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
1244     }
1245
1246     return 0;
1247 }
1248
1249 static inline LRESULT
1250 TRACKBAR_SetRange (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG range)
1251 {
1252     BOOL changed = infoPtr->lRangeMin != (SHORT)LOWORD(range) ||
1253                    infoPtr->lRangeMax != (SHORT)HIWORD(range);
1254
1255     infoPtr->lRangeMin = (SHORT)LOWORD(range);
1256     infoPtr->lRangeMax = (SHORT)HIWORD(range);
1257
1258     /* clip position to new min/max limit */
1259     if (infoPtr->lPos < infoPtr->lRangeMin)
1260         infoPtr->lPos = infoPtr->lRangeMin;
1261
1262     if (infoPtr->lPos > infoPtr->lRangeMax)
1263         infoPtr->lPos = infoPtr->lRangeMax;
1264
1265     TRACKBAR_UpdatePageSize(infoPtr);
1266
1267     if (changed) {
1268         if (infoPtr->dwStyle & TBS_AUTOTICKS)
1269             TRACKBAR_RecalculateTics (infoPtr);
1270         infoPtr->flags |= TB_THUMBPOSCHANGED;
1271     }
1272
1273     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1274
1275     return 0;
1276 }
1277
1278
1279 static inline LRESULT
1280 TRACKBAR_SetRangeMax (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMax)
1281 {
1282     BOOL changed = infoPtr->lRangeMax != lMax;
1283     LONG rightmost = max(lMax, infoPtr->lRangeMin);
1284
1285     infoPtr->lRangeMax = lMax;
1286     if (infoPtr->lPos > rightmost) {
1287         infoPtr->lPos = rightmost;
1288         infoPtr->flags |= TB_THUMBPOSCHANGED;
1289     }
1290
1291     TRACKBAR_UpdatePageSize(infoPtr);
1292
1293     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1294         TRACKBAR_RecalculateTics (infoPtr);
1295
1296     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1297
1298     return 0;
1299 }
1300
1301
1302 static inline LRESULT
1303 TRACKBAR_SetRangeMin (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMin)
1304 {
1305     BOOL changed = infoPtr->lRangeMin != lMin;
1306
1307     infoPtr->lRangeMin = lMin;
1308     if (infoPtr->lPos < infoPtr->lRangeMin) {
1309         infoPtr->lPos = infoPtr->lRangeMin;
1310         infoPtr->flags |= TB_THUMBPOSCHANGED;
1311     }
1312
1313     TRACKBAR_UpdatePageSize(infoPtr);
1314
1315     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1316         TRACKBAR_RecalculateTics (infoPtr);
1317
1318     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1319
1320     return 0;
1321 }
1322
1323
1324 static inline LRESULT
1325 TRACKBAR_SetSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lSel)
1326 {
1327     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1328         infoPtr->lSelMin = 0;
1329         infoPtr->lSelMax = 0;
1330         return 0;
1331     }
1332
1333     infoPtr->lSelMin = (SHORT)LOWORD(lSel);
1334     infoPtr->lSelMax = (SHORT)HIWORD(lSel);
1335     infoPtr->flags |= TB_SELECTIONCHANGED;
1336
1337     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1338         infoPtr->lSelMin = infoPtr->lRangeMin;
1339     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1340         infoPtr->lSelMax = infoPtr->lRangeMax;
1341
1342     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1343
1344     return 0;
1345 }
1346
1347
1348 static inline LRESULT
1349 TRACKBAR_SetSelEnd (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lEnd)
1350 {
1351     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1352         infoPtr->lSelMax = 0;
1353         return 0;
1354     }
1355
1356     infoPtr->lSelMax = lEnd;
1357     infoPtr->flags |= TB_SELECTIONCHANGED;
1358
1359     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1360         infoPtr->lSelMax = infoPtr->lRangeMax;
1361
1362     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1363
1364     return 0;
1365 }
1366
1367
1368 static inline LRESULT
1369 TRACKBAR_SetSelStart (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lStart)
1370 {
1371     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1372         infoPtr->lSelMin = 0;
1373         return 0;
1374     }
1375
1376     infoPtr->lSelMin = lStart;
1377     infoPtr->flags  |=TB_SELECTIONCHANGED;
1378
1379     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1380         infoPtr->lSelMin = infoPtr->lRangeMin;
1381
1382     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1383
1384     return 0;
1385 }
1386
1387
1388 static inline LRESULT
1389 TRACKBAR_SetThumbLength (TRACKBAR_INFO *infoPtr, UINT iLength)
1390 {
1391     if (infoPtr->dwStyle & TBS_FIXEDLENGTH) {
1392         /* We're not supposed to check if it's really changed or not,
1393            just repaint in any case. */
1394         infoPtr->uThumbLen = iLength;
1395         infoPtr->flags |= TB_THUMBSIZECHANGED;
1396         TRACKBAR_InvalidateAll(infoPtr);
1397     }
1398
1399     return 0;
1400 }
1401
1402
1403 static inline LRESULT
1404 TRACKBAR_SetTic (TRACKBAR_INFO *infoPtr, LONG lPos)
1405 {
1406     if ((lPos < infoPtr->lRangeMin) || (lPos> infoPtr->lRangeMax))
1407         return FALSE;
1408
1409     TRACE("lPos=%d\n", lPos);
1410
1411     infoPtr->uNumTics++;
1412     infoPtr->tics=ReAlloc( infoPtr->tics,
1413                                     (infoPtr->uNumTics)*sizeof (DWORD));
1414     if (!infoPtr->tics) {
1415         infoPtr->uNumTics = 0;
1416         notify(infoPtr, NM_OUTOFMEMORY);
1417         return FALSE;
1418     }
1419     infoPtr->tics[infoPtr->uNumTics-1] = lPos;
1420
1421     TRACKBAR_InvalidateAll(infoPtr);
1422
1423     return TRUE;
1424 }
1425
1426
1427 static inline LRESULT
1428 TRACKBAR_SetTicFreq (TRACKBAR_INFO *infoPtr, WORD wFreq)
1429 {
1430     if (infoPtr->dwStyle & TBS_AUTOTICKS) {
1431         infoPtr->uTicFreq = wFreq;
1432         TRACKBAR_RecalculateTics (infoPtr);
1433         TRACKBAR_InvalidateAll(infoPtr);
1434     }
1435
1436     TRACKBAR_UpdateThumb (infoPtr);
1437     return 0;
1438 }
1439
1440
1441 static inline INT
1442 TRACKBAR_SetTipSide (TRACKBAR_INFO *infoPtr, INT fLocation)
1443 {
1444     INT fTemp = infoPtr->fLocation;
1445
1446     infoPtr->fLocation = fLocation;
1447
1448     return fTemp;
1449 }
1450
1451
1452 static inline LRESULT
1453 TRACKBAR_SetToolTips (TRACKBAR_INFO *infoPtr, HWND hwndTT)
1454 {
1455     infoPtr->hwndToolTip = hwndTT;
1456
1457     return 0;
1458 }
1459
1460
1461 static inline BOOL
1462 TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
1463 {
1464     BOOL bTemp = infoPtr->bUnicode;
1465
1466     infoPtr->bUnicode = fUnicode;
1467
1468     return bTemp;
1469 }
1470
1471 static int get_scaled_metric(const TRACKBAR_INFO *infoPtr, int value)
1472 {
1473     return MulDiv(value, GetDpiForWindow(infoPtr->hwndSelf), 96);
1474 }
1475
1476 static LRESULT
1477 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
1478 {
1479     int client_size;
1480     RECT rect;
1481
1482     infoPtr->uThumbLen = get_scaled_metric(infoPtr, infoPtr->dwStyle & TBS_ENABLESELRANGE ? 23 : 21);
1483
1484     if (!(infoPtr->dwStyle & TBS_FIXEDLENGTH))
1485     {
1486         GetClientRect(infoPtr->hwndSelf, &rect);
1487         if (infoPtr->dwStyle & TBS_VERT)
1488             client_size = rect.right - rect.left;
1489         else
1490             client_size = rect.bottom - rect.top;
1491
1492         if (client_size < infoPtr->uThumbLen)
1493             infoPtr->uThumbLen = client_size > get_scaled_metric(infoPtr, 9) ?
1494                 client_size - get_scaled_metric(infoPtr, 5) : get_scaled_metric(infoPtr, 4);
1495     }
1496
1497     TRACKBAR_CalcChannel (infoPtr);
1498     TRACKBAR_UpdateThumb (infoPtr);
1499     infoPtr->flags &= ~TB_SELECTIONCHANGED;
1500
1501     return 0;
1502 }
1503
1504
1505 static LRESULT
1506 TRACKBAR_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
1507 {
1508     TRACKBAR_INFO *infoPtr;
1509
1510     infoPtr = Alloc (sizeof(TRACKBAR_INFO));
1511     if (!infoPtr) return -1;
1512     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1513
1514     /* set default values */
1515     infoPtr->hwndSelf  = hwnd;
1516     infoPtr->dwStyle   = lpcs->style;
1517     infoPtr->lRangeMin = 0;
1518     infoPtr->lRangeMax = 100;
1519     infoPtr->lLineSize = 1;
1520     infoPtr->lPageSize = TB_DEFAULTPAGESIZE;
1521     infoPtr->lSelMin   = 0;
1522     infoPtr->lSelMax   = 0;
1523     infoPtr->lPos      = 0;
1524     infoPtr->fLocation = TBTS_TOP;
1525     infoPtr->uNumTics  = 0;    /* start and end tic are not included in count*/
1526     infoPtr->uTicFreq  = 1;
1527     infoPtr->tics      = NULL;
1528     infoPtr->hwndNotify= lpcs->hwndParent;
1529
1530     TRACKBAR_InitializeThumb (infoPtr);
1531
1532     /* Create tooltip control */
1533     if (infoPtr->dwStyle & TBS_TOOLTIPS) {
1534
1535         infoPtr->hwndToolTip =
1536             CreateWindowExW (0, TOOLTIPS_CLASSW, NULL, WS_POPUP,
1537                              CW_USEDEFAULT, CW_USEDEFAULT,
1538                              CW_USEDEFAULT, CW_USEDEFAULT,
1539                              hwnd, 0, 0, 0);
1540
1541         if (infoPtr->hwndToolTip) {
1542             TTTOOLINFOW ti;
1543             WCHAR wEmpty = 0;
1544             ZeroMemory (&ti, sizeof(ti));
1545             ti.cbSize   = sizeof(ti);
1546             ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
1547             ti.hwnd     = hwnd;
1548             ti.lpszText = &wEmpty;
1549
1550             SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
1551          }
1552     }
1553
1554     OpenThemeData (hwnd, themeClass);
1555
1556     return 0;
1557 }
1558
1559
1560 static LRESULT
1561 TRACKBAR_Destroy (TRACKBAR_INFO *infoPtr)
1562 {
1563     /* delete tooltip control */
1564     if (infoPtr->hwndToolTip)
1565         DestroyWindow (infoPtr->hwndToolTip);
1566
1567     Free (infoPtr->tics);
1568     infoPtr->tics = NULL;
1569
1570     SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
1571     CloseThemeData (GetWindowTheme (infoPtr->hwndSelf));
1572     Free (infoPtr);
1573
1574     return 0;
1575 }
1576
1577
1578 static LRESULT
1579 TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr)
1580 {
1581     TRACE("\n");
1582     infoPtr->flags &= ~TB_IS_FOCUSED;
1583     TRACKBAR_InvalidateAll(infoPtr);
1584
1585     return 0;
1586 }
1587
1588 static LRESULT
1589 TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, INT x, INT y)
1590 {
1591     POINT clickPoint;
1592
1593     clickPoint.x = x;
1594     clickPoint.y = y;
1595
1596     SetFocus(infoPtr->hwndSelf);
1597
1598     if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
1599         infoPtr->flags |= TB_DRAG_MODE;
1600         SetCapture (infoPtr->hwndSelf);
1601         TRACKBAR_UpdateToolTip (infoPtr);
1602         TRACKBAR_ActivateToolTip (infoPtr, TRUE);
1603         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1604     } else {
1605         LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
1606         if (dir == 0) return 0;
1607         infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
1608         TRACKBAR_AutoPage (infoPtr, clickPoint);
1609         SetCapture (infoPtr->hwndSelf);
1610         SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
1611     }
1612
1613     return 0;
1614 }
1615
1616
1617 static LRESULT
1618 TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr)
1619 {
1620     if (infoPtr->flags & TB_DRAG_MODE) {
1621         notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
1622         notify_with_scroll (infoPtr, TB_ENDTRACK);
1623         infoPtr->flags &= ~TB_DRAG_MODE;
1624         ReleaseCapture ();
1625         notify(infoPtr, NM_RELEASEDCAPTURE);
1626         TRACKBAR_ActivateToolTip(infoPtr, FALSE);
1627         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1628     }
1629     if (infoPtr->flags & TB_AUTO_PAGE) {
1630         KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
1631         infoPtr->flags &= ~TB_AUTO_PAGE;
1632         notify_with_scroll (infoPtr, TB_ENDTRACK);
1633         ReleaseCapture ();
1634         notify(infoPtr, NM_RELEASEDCAPTURE);
1635     }
1636
1637     return 0;
1638 }
1639
1640
1641 static LRESULT
1642 TRACKBAR_CaptureChanged (const TRACKBAR_INFO *infoPtr)
1643 {
1644     notify_with_scroll (infoPtr, TB_ENDTRACK);
1645     return 0;
1646 }
1647
1648
1649 static LRESULT
1650 TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
1651 {
1652     if (hdc) {
1653         TRACKBAR_Refresh(infoPtr, hdc);
1654     } else {
1655         PAINTSTRUCT ps;
1656         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
1657         TRACKBAR_Refresh (infoPtr, hdc);
1658         EndPaint (infoPtr->hwndSelf, &ps);
1659     }
1660
1661     return 0;
1662 }
1663
1664
1665 static LRESULT
1666 TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr)
1667 {
1668     TRACE("\n");
1669     infoPtr->flags |= TB_IS_FOCUSED;
1670     TRACKBAR_InvalidateAll(infoPtr);
1671
1672     return 0;
1673 }
1674
1675
1676 static LRESULT
1677 TRACKBAR_Size (TRACKBAR_INFO *infoPtr)
1678 {
1679     if (infoPtr->dwStyle & TBS_FIXEDLENGTH)
1680     {
1681         TRACKBAR_CalcChannel(infoPtr);
1682         TRACKBAR_UpdateThumb(infoPtr);
1683     }
1684     else
1685         TRACKBAR_InitializeThumb(infoPtr);
1686     TRACKBAR_AlignBuddies (infoPtr);
1687     TRACKBAR_InvalidateAll(infoPtr);
1688
1689     return 0;
1690 }
1691
1692 static LRESULT
1693 TRACKBAR_StyleChanged (TRACKBAR_INFO *infoPtr, WPARAM wStyleType,
1694                        const STYLESTRUCT *lpss)
1695 {
1696     if (wStyleType != GWL_STYLE) return 0;
1697
1698     infoPtr->dwStyle = lpss->styleNew;
1699
1700     return 0;
1701 }
1702
1703 static LRESULT
1704 TRACKBAR_Timer (TRACKBAR_INFO *infoPtr)
1705 {
1706     if (infoPtr->flags & TB_AUTO_PAGE) {
1707         POINT pt;
1708         if (GetCursorPos(&pt))
1709             if (ScreenToClient(infoPtr->hwndSelf, &pt))
1710                 TRACKBAR_AutoPage(infoPtr, pt);
1711     }
1712     return 0;
1713 }
1714
1715
1716 /* update theme after a WM_THEMECHANGED message */
1717 static LRESULT theme_changed (const TRACKBAR_INFO* infoPtr)
1718 {
1719     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
1720     CloseThemeData (theme);
1721     OpenThemeData (infoPtr->hwndSelf, themeClass);
1722     return 0;
1723 }
1724
1725
1726 static LRESULT
1727 TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, INT x, INT y)
1728 {
1729     INT clickPlace = (infoPtr->dwStyle & TBS_VERT) ? y : x;
1730     LONG dragPos, oldPos = infoPtr->lPos;
1731
1732     TRACE("(x=%d. y=%d)\n", x, y);
1733
1734     if (infoPtr->flags & TB_AUTO_PAGE) {
1735         POINT pt;
1736         pt.x = x;
1737         pt.y = y;
1738         TRACKBAR_AutoPage (infoPtr, pt);
1739         return TRUE;
1740     }
1741
1742     if (!(infoPtr->flags & TB_DRAG_MODE))
1743     {
1744         if (GetWindowTheme (infoPtr->hwndSelf))
1745         {
1746             DWORD oldFlags = infoPtr->flags;
1747             POINT pt;
1748             pt.x = x;
1749             pt.y = y;
1750             if (PtInRect (&infoPtr->rcThumb, pt))
1751             {
1752                 TRACKMOUSEEVENT tme;
1753                 tme.cbSize = sizeof( tme );
1754                 tme.dwFlags = TME_LEAVE;
1755                 tme.hwndTrack = infoPtr->hwndSelf;
1756                 TrackMouseEvent( &tme );
1757                 infoPtr->flags |= TB_THUMB_HOT;
1758             }
1759             else
1760             {
1761                 TRACKMOUSEEVENT tme;
1762                 tme.cbSize = sizeof( tme );
1763                 tme.dwFlags = TME_CANCEL;
1764                 tme.hwndTrack = infoPtr->hwndSelf;
1765                 TrackMouseEvent( &tme );
1766                 infoPtr->flags &= ~TB_THUMB_HOT;
1767             }
1768             if (oldFlags != infoPtr->flags) InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1769         }
1770         return TRUE;
1771     }
1772
1773     dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace);
1774
1775     if (dragPos == oldPos) return TRUE;
1776
1777     infoPtr->lPos = dragPos;
1778     TRACKBAR_UpdateThumb (infoPtr);
1779
1780     notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));
1781
1782     TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
1783     UpdateWindow (infoPtr->hwndSelf);
1784
1785     return TRUE;
1786 }
1787
1788 static BOOL
1789 TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey)
1790 {
1791     BOOL downIsLeft = infoPtr->dwStyle & TBS_DOWNISLEFT;
1792     BOOL vert = infoPtr->dwStyle & TBS_VERT;
1793     LONG pos = infoPtr->lPos;
1794
1795     TRACE("%x\n", nVirtKey);
1796
1797     switch (nVirtKey) {
1798     case VK_UP:
1799         if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1800         else TRACKBAR_LineUp(infoPtr);
1801         break;
1802     case VK_LEFT:
1803         if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1804         else TRACKBAR_LineUp(infoPtr);
1805         break;
1806     case VK_DOWN:
1807         if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1808         else TRACKBAR_LineDown(infoPtr);
1809         break;
1810     case VK_RIGHT:
1811         if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1812         else TRACKBAR_LineDown(infoPtr);
1813         break;
1814     case VK_NEXT:
1815         if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
1816         else TRACKBAR_PageDown(infoPtr);
1817         break;
1818     case VK_PRIOR:
1819         if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
1820         else TRACKBAR_PageUp(infoPtr);
1821         break;
1822     case VK_HOME:
1823         if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
1824         infoPtr->lPos = infoPtr->lRangeMin;
1825         notify_with_scroll (infoPtr, TB_TOP);
1826         break;
1827     case VK_END:
1828         if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
1829         infoPtr->lPos = infoPtr->lRangeMax;
1830         notify_with_scroll (infoPtr, TB_BOTTOM);
1831         break;
1832     }
1833
1834     if (pos != infoPtr->lPos) {
1835         TRACKBAR_UpdateThumb (infoPtr);
1836         TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
1837     }
1838
1839     return TRUE;
1840 }
1841
1842
1843 static inline BOOL
1844 TRACKBAR_KeyUp (const TRACKBAR_INFO *infoPtr, INT nVirtKey)
1845 {
1846     switch (nVirtKey) {
1847     case VK_LEFT:
1848     case VK_UP:
1849     case VK_RIGHT:
1850     case VK_DOWN:
1851     case VK_NEXT:
1852     case VK_PRIOR:
1853     case VK_HOME:
1854     case VK_END:
1855         notify_with_scroll (infoPtr, TB_ENDTRACK);
1856     }
1857     return TRUE;
1858 }
1859
1860
1861 static LRESULT
1862 TRACKBAR_Enable (TRACKBAR_INFO *infoPtr, BOOL enable)
1863 {
1864     if (enable)
1865         infoPtr->dwStyle &= ~WS_DISABLED;
1866     else
1867         infoPtr->dwStyle |= WS_DISABLED;
1868
1869     InvalidateRect(infoPtr->hwndSelf, &infoPtr->rcThumb, TRUE);
1870
1871     return 1;
1872 }
1873
1874 static LRESULT WINAPI
1875 TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1876 {
1877     TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);
1878
1879     TRACE("hwnd=%p msg=%x wparam=%lx lparam=%lx\n", hwnd, uMsg, wParam, lParam);
1880
1881     if (!infoPtr && (uMsg != WM_CREATE))
1882         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1883
1884     switch (uMsg)
1885     {
1886     case TBM_CLEARSEL:
1887         return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);
1888
1889     case TBM_CLEARTICS:
1890         return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);
1891
1892     case TBM_GETBUDDY:
1893         return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);
1894
1895     case TBM_GETCHANNELRECT:
1896         return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);
1897
1898     case TBM_GETLINESIZE:
1899         return infoPtr->lLineSize;
1900
1901     case TBM_GETNUMTICS:
1902         return TRACKBAR_GetNumTics (infoPtr);
1903
1904     case TBM_GETPAGESIZE:
1905         return infoPtr->lPageSize;
1906
1907     case TBM_GETPOS:
1908         return infoPtr->lPos;
1909
1910     case TBM_GETPTICS:
1911         return (LRESULT)infoPtr->tics;
1912
1913     case TBM_GETRANGEMAX:
1914         return infoPtr->lRangeMax;
1915
1916     case TBM_GETRANGEMIN:
1917         return infoPtr->lRangeMin;
1918
1919     case TBM_GETSELEND:
1920         return infoPtr->lSelMax;
1921
1922     case TBM_GETSELSTART:
1923         return infoPtr->lSelMin;
1924
1925     case TBM_GETTHUMBLENGTH:
1926         return infoPtr->uThumbLen;
1927
1928     case TBM_GETTHUMBRECT:
1929         return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);
1930
1931     case TBM_GETTIC:
1932         return TRACKBAR_GetTic (infoPtr, (INT)wParam);
1933
1934     case TBM_GETTICPOS:
1935         return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);
1936
1937     case TBM_GETTOOLTIPS:
1938         return (LRESULT)infoPtr->hwndToolTip;
1939
1940     case TBM_GETUNICODEFORMAT:
1941         return infoPtr->bUnicode;
1942
1943     case TBM_SETBUDDY:
1944         return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);
1945
1946     case TBM_SETLINESIZE:
1947         return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);
1948
1949     case TBM_SETPAGESIZE:
1950         return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);
1951
1952     case TBM_SETPOS:
1953         return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);
1954
1955     case TBM_SETRANGE:
1956         return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);
1957
1958     case TBM_SETRANGEMAX:
1959         return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);
1960
1961     case TBM_SETRANGEMIN:
1962         return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);
1963
1964     case TBM_SETSEL:
1965         return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);
1966
1967     case TBM_SETSELEND:
1968         return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);
1969
1970     case TBM_SETSELSTART:
1971         return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);
1972
1973     case TBM_SETTHUMBLENGTH:
1974         return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);
1975
1976     case TBM_SETTIC:
1977         return TRACKBAR_SetTic (infoPtr, (LONG)lParam);
1978
1979     case TBM_SETTICFREQ:
1980         return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);
1981
1982     case TBM_SETTIPSIDE:
1983         return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);
1984
1985     case TBM_SETTOOLTIPS:
1986         return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);
1987
1988     case TBM_SETUNICODEFORMAT:
1989         return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);
1990
1991
1992     case WM_CAPTURECHANGED:
1993         if (hwnd == (HWND)lParam) return 0;
1994         return TRACKBAR_CaptureChanged (infoPtr);
1995
1996     case WM_CREATE:
1997         return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);
1998
1999     case WM_DESTROY:
2000         return TRACKBAR_Destroy (infoPtr);
2001
2002     case WM_ENABLE:
2003         return TRACKBAR_Enable (infoPtr, (BOOL)wParam);
2004
2005     case WM_ERASEBKGND:
2006         return 0;
2007
2008     case WM_GETDLGCODE:
2009         return DLGC_WANTARROWS;
2010
2011     case WM_KEYDOWN:
2012         return TRACKBAR_KeyDown (infoPtr, (INT)wParam);
2013
2014     case WM_KEYUP:
2015         return TRACKBAR_KeyUp (infoPtr, (INT)wParam);
2016
2017     case WM_KILLFOCUS:
2018         return TRACKBAR_KillFocus (infoPtr);
2019
2020     case WM_LBUTTONDOWN:
2021         return TRACKBAR_LButtonDown (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2022
2023     case WM_LBUTTONUP:
2024         return TRACKBAR_LButtonUp (infoPtr);
2025
2026     case WM_MOUSELEAVE:
2027         infoPtr->flags &= ~TB_THUMB_HOT;
2028         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
2029         return 0;
2030
2031     case WM_MOUSEMOVE:
2032         return TRACKBAR_MouseMove (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2033
2034     case WM_PRINTCLIENT:
2035     case WM_PAINT:
2036         return TRACKBAR_Paint (infoPtr, (HDC)wParam);
2037
2038     case WM_SETFOCUS:
2039         return TRACKBAR_SetFocus (infoPtr);
2040
2041     case WM_SIZE:
2042         return TRACKBAR_Size (infoPtr);
2043
2044     case WM_STYLECHANGED:
2045         return TRACKBAR_StyleChanged (infoPtr, wParam, (LPSTYLESTRUCT)lParam);
2046
2047     case WM_THEMECHANGED:
2048         return theme_changed (infoPtr);
2049
2050     case WM_TIMER:
2051         return TRACKBAR_Timer (infoPtr);
2052
2053     case WM_WININICHANGE:
2054         return TRACKBAR_InitializeThumb (infoPtr);
2055
2056     default:
2057         if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
2058             ERR("unknown msg %04x wp=%08lx lp=%08lx\n", uMsg, wParam, lParam);
2059         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
2060     }
2061 }
2062
2063
2064 void TRACKBAR_Register (void)
2065 {
2066     WNDCLASSW wndClass;
2067
2068     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
2069     wndClass.style         = CS_GLOBALCLASS;
2070     wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
2071     wndClass.cbClsExtra    = 0;
2072     wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
2073     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
2074     wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
2075     wndClass.lpszClassName = TRACKBAR_CLASSW;
2076
2077     RegisterClassW (&wndClass);
2078 }
2079
2080
2081 void TRACKBAR_Unregister (void)
2082 {
2083     UnregisterClassW (TRACKBAR_CLASSW, NULL);
2084 }