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[] = L"Trackbar";
 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("  <= %Id\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=%ld\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 if (infoPtr->flags & TB_IS_FOCUSED)
 721             stateId = TUS_FOCUSED;
 722         else
 723             stateId = TUS_NORMAL;
 724
 725         DrawThemeBackground (theme, hdc, partId, stateId, &infoPtr->rcThumb, NULL);
 726
 727         return;
 728     }
 729
 730     if (infoPtr->dwStyle & WS_DISABLED || infoPtr->flags & TB_DRAG_MODE)
 731     {
 732         if (comctl32_color.clr3dHilight == comctl32_color.clrWindow)
 733             brush = COMCTL32_hPattern55AABrush;
 734         else
 735             brush = GetSysColorBrush(COLOR_SCROLLBAR);
 736
 737         SetTextColor(hdc, comctl32_color.clr3dFace);
 738         SetBkColor(hdc, comctl32_color.clr3dHilight);
 739     }
 740     else
 741         brush = GetSysColorBrush(COLOR_BTNFACE);
 742
 743     PointDepth = TRACKBAR_FillThumb(infoPtr, hdc, brush);
 744
 745     if (infoPtr->dwStyle & TBS_BOTH)
 746     {
 747        DrawEdge(hdc, &infoPtr->rcThumb, EDGE_RAISED, BF_RECT | BF_SOFT);
 748        return;
 749     }
 750     else
 751     {
 752         RECT thumb = infoPtr->rcThumb;
 753
 754         if (infoPtr->dwStyle & TBS_VERT)
 755         {
 756           if (infoPtr->dwStyle & TBS_LEFT)
 757           {
 758             /* rectangular part */
 759             thumb.left += PointDepth;
 760             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_TOP | BF_RIGHT | BF_BOTTOM | BF_SOFT);
 761
 762             /* light edge */
 763             thumb.left -= PointDepth;
 764             thumb.right = thumb.left + PointDepth;
 765             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 766             thumb.top = infoPtr->rcThumb.top;
 767             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPRIGHT | BF_SOFT);
 768
 769             /* shadowed edge */
 770             thumb.top += PointDepth;
 771             thumb.bottom += PointDepth;
 772             DrawEdge(hdc, &thumb, EDGE_SUNKEN, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 773             return;
 774           }
 775           else
 776           {
 777             /* rectangular part */
 778             thumb.right -= PointDepth;
 779             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_TOP | BF_LEFT | BF_BOTTOM | BF_SOFT);
 780
 781             /* light edge */
 782             thumb.left = thumb.right;
 783             thumb.right += PointDepth + 1;
 784             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 785             thumb.top = infoPtr->rcThumb.top;
 786             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 787
 788             /* shadowed edge */
 789             thumb.top += PointDepth;
 790             thumb.bottom += PointDepth;
 791             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT);
 792           }
 793         }
 794         else
 795         {
 796           if (infoPtr->dwStyle & TBS_TOP)
 797           {
 798             /* rectangular part */
 799             thumb.top += PointDepth;
 800             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_LEFT | BF_BOTTOM | BF_RIGHT | BF_SOFT);
 801
 802             /* light edge */
 803             thumb.left = infoPtr->rcThumb.left;
 804             thumb.right = thumb.left + PointDepth;
 805             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 806             thumb.top -= PointDepth;
 807             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPRIGHT | BF_SOFT);
 808
 809             /* shadowed edge */
 810             thumb.left += PointDepth;
 811             thumb.right += PointDepth;
 812             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMRIGHT | BF_SOFT);
 813           }
 814           else
 815           {
 816             /* rectangular part */
 817             thumb.bottom -= PointDepth;
 818             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_LEFT | BF_TOP | BF_RIGHT | BF_SOFT);
 819
 820             /* light edge */
 821             thumb.left = infoPtr->rcThumb.left;
 822             thumb.right = thumb.left + PointDepth;
 823             thumb.top = infoPtr->rcThumb.bottom - PointDepth - 1;
 824             thumb.bottom += PointDepth;
 825             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 826
 827             /* shadowed edge */
 828             thumb.left += PointDepth;
 829             thumb.right += PointDepth;
 830             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT);
 831           }
 832         }
 833     }
 834 }
 835
 836
 837 static inline void
 838 TRACKBAR_ActivateToolTip (const TRACKBAR_INFO *infoPtr, BOOL fShow)
 839 {
 840     TTTOOLINFOW ti;
 841
 842     if (!infoPtr->hwndToolTip) return;
 843
 844     ZeroMemory(&ti, sizeof(ti));
 845     ti.cbSize = sizeof(ti);
 846     ti.hwnd   = infoPtr->hwndSelf;
 847
 848     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKACTIVATE, fShow, (LPARAM)&ti);
 849 }
 850
 851
 852 static void
 853 TRACKBAR_UpdateToolTip (const TRACKBAR_INFO *infoPtr)
 854 {
 855     WCHAR buf[80];
 856     TTTOOLINFOW ti;
 857     POINT pt;
 858     RECT rcClient;
 859     LRESULT size;
 860
 861     if (!infoPtr->hwndToolTip) return;
 862
 863     ZeroMemory(&ti, sizeof(ti));
 864     ti.cbSize = sizeof(ti);
 865     ti.hwnd   = infoPtr->hwndSelf;
 866     ti.uFlags = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
 867
 868     wsprintfW (buf, L"%ld", infoPtr->lPos);
 869     ti.lpszText = buf;
 870     SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 871
 872     GetClientRect (infoPtr->hwndSelf, &rcClient);
 873     size = SendMessageW (infoPtr->hwndToolTip, TTM_GETBUBBLESIZE, 0, (LPARAM)&ti);
 874     if (infoPtr->dwStyle & TBS_VERT) {
 875         if (infoPtr->fLocation == TBTS_LEFT)
 876             pt.x = 0 - LOWORD(size) - TOOLTIP_OFFSET;
 877         else
 878             pt.x = rcClient.right + TOOLTIP_OFFSET;
 879         pt.y = (infoPtr->rcThumb.top + infoPtr->rcThumb.bottom - HIWORD(size))/2;
 880     } else {
 881         if (infoPtr->fLocation == TBTS_TOP)
 882             pt.y = 0 - HIWORD(size) - TOOLTIP_OFFSET;
 883         else
 884             pt.y = rcClient.bottom + TOOLTIP_OFFSET;
 885         pt.x = (infoPtr->rcThumb.left + infoPtr->rcThumb.right - LOWORD(size))/2;
 886     }
 887     ClientToScreen(infoPtr->hwndSelf, &pt);
 888
 889     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKPOSITION,
 890                   0, MAKELPARAM(pt.x, pt.y));
 891 }
 892
 893
 894 static void
 895 TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdcDst)
 896 {
 897     RECT rcClient;
 898     HDC hdc;
 899     HBITMAP hOldBmp = 0, hOffScreenBmp = 0;
 900     NMCUSTOMDRAW nmcd;
 901     int gcdrf, icdrf;
 902     HBRUSH brush;
 903
 904     if (infoPtr->flags & TB_THUMBCHANGED) {
 905         TRACKBAR_UpdateThumb (infoPtr);
 906         if (infoPtr->flags & TB_THUMBSIZECHANGED)
 907             TRACKBAR_CalcChannel (infoPtr);
 908     }
 909     if (infoPtr->flags & TB_SELECTIONCHANGED)
 910         TRACKBAR_CalcSelection (infoPtr);
 911
 912     if (infoPtr->flags & TB_DRAG_MODE)
 913         TRACKBAR_UpdateToolTip (infoPtr);
 914
 915     infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
 916
 917     GetClientRect (infoPtr->hwndSelf, &rcClient);
 918
 919     /* try to render offscreen, if we fail, carrry onscreen */
 920     hdc = CreateCompatibleDC(hdcDst);
 921     if (hdc) {
 922         hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
 923         if (hOffScreenBmp) {
 924             hOldBmp = SelectObject(hdc, hOffScreenBmp);
 925         } else {
 926             DeleteObject(hdc);
 927             hdc = hdcDst;
 928         }
 929     } else {
 930         hdc = hdcDst;
 931     }
 932
 933     ZeroMemory(&nmcd, sizeof(nmcd));
 934     nmcd.hdr.hwndFrom = infoPtr->hwndSelf;
 935     nmcd.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
 936     nmcd.hdr.code = NM_CUSTOMDRAW;
 937     nmcd.hdc = hdc;
 938
 939     /* start the paint cycle */
 940     nmcd.rc = rcClient;
 941     gcdrf = notify_customdraw(infoPtr, &nmcd, CDDS_PREPAINT);
 942     if (gcdrf & CDRF_SKIPDEFAULT) goto cleanup;
 943
 944     /* Erase background */
 945     if (gcdrf == CDRF_DODEFAULT ||
 946         notify_customdraw(infoPtr, &nmcd, CDDS_PREERASE) != CDRF_SKIPDEFAULT) {
 947         brush = (HBRUSH)SendMessageW(infoPtr->hwndNotify, WM_CTLCOLORSTATIC, (WPARAM)hdc,
 948                                      (LPARAM)infoPtr->hwndSelf);
 949         FillRect(hdc, &rcClient, brush ? brush : GetSysColorBrush(COLOR_BTNFACE));
 950         if (gcdrf != CDRF_DODEFAULT)
 951             notify_customdraw(infoPtr, &nmcd, CDDS_POSTERASE);
 952     }
 953
 954     /* draw channel */
 955     if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 956         nmcd.dwItemSpec = TBCD_CHANNEL;
 957         nmcd.uItemState = CDIS_DEFAULT;
 958         nmcd.rc = infoPtr->rcChannel;
 959         icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 960     } else icdrf = CDRF_DODEFAULT;
 961     if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 962         TRACKBAR_DrawChannel (infoPtr, hdc);
 963         if (icdrf & CDRF_NOTIFYPOSTPAINT)
 964             notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 965     }
 966
 967
 968     /* draw tics */
 969     if (!(infoPtr->dwStyle & TBS_NOTICKS)) {
 970         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 971             nmcd.dwItemSpec = TBCD_TICS;
 972             nmcd.uItemState = CDIS_DEFAULT;
 973             nmcd.rc = rcClient;
 974             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 975         } else icdrf = CDRF_DODEFAULT;
 976         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 977             TRACKBAR_DrawTics (infoPtr, hdc);
 978             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 979                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 980         }
 981     }
 982
 983     /* draw thumb */
 984     if (!(infoPtr->dwStyle & TBS_NOTHUMB)) {
 985         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 986             nmcd.dwItemSpec = TBCD_THUMB;
 987             nmcd.uItemState = infoPtr->flags & TB_DRAG_MODE ? CDIS_HOT : CDIS_DEFAULT;
 988             nmcd.rc = infoPtr->rcThumb;
 989             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 990         } else icdrf = CDRF_DODEFAULT;
 991         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 992             TRACKBAR_DrawThumb(infoPtr, hdc);
 993             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 994                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 995         }
 996     }
 997
 998     /* draw focus rectangle */
 999     if (infoPtr->flags & TB_IS_FOCUSED) {
1000         DrawFocusRect(hdc, &rcClient);
1001     }
1002
1003     /* finish up the painting */
1004     if (gcdrf & CDRF_NOTIFYPOSTPAINT)
1005         notify_customdraw(infoPtr, &nmcd, CDDS_POSTPAINT);
1006
1007 cleanup:
1008     /* cleanup, if we rendered offscreen */
1009     if (hdc != hdcDst) {
1010         BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
1011         SelectObject(hdc, hOldBmp);
1012         DeleteObject(hOffScreenBmp);
1013         DeleteObject(hdc);
1014     }
1015 }
1016
1017
1018 static void
1019 TRACKBAR_AlignBuddies (const TRACKBAR_INFO *infoPtr)
1020 {
1021     HWND hwndParent = GetParent (infoPtr->hwndSelf);
1022     RECT rcSelf, rcBuddy;
1023     INT x, y;
1024
1025     GetWindowRect (infoPtr->hwndSelf, &rcSelf);
1026     MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcSelf, 2);
1027
1028     /* align buddy left or above */
1029     if (infoPtr->hwndBuddyLA) {
1030         GetWindowRect (infoPtr->hwndBuddyLA, &rcBuddy);
1031         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1032
1033         if (infoPtr->dwStyle & TBS_VERT) {
1034             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1035                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1036             y = rcSelf.top - (rcBuddy.bottom - rcBuddy.top);
1037         }
1038         else {
1039             x = rcSelf.left - (rcBuddy.right - rcBuddy.left);
1040             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1041                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1042         }
1043
1044         SetWindowPos (infoPtr->hwndBuddyLA, 0, x, y, 0, 0,
1045                       SWP_NOZORDER | SWP_NOSIZE);
1046     }
1047
1048
1049     /* align buddy right or below */
1050     if (infoPtr->hwndBuddyRB) {
1051         GetWindowRect (infoPtr->hwndBuddyRB, &rcBuddy);
1052         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1053
1054         if (infoPtr->dwStyle & TBS_VERT) {
1055             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1056                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1057             y = rcSelf.bottom;
1058         }
1059         else {
1060             x = rcSelf.right;
1061             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1062                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1063         }
1064         SetWindowPos (infoPtr->hwndBuddyRB, 0, x, y, 0, 0,
1065                       SWP_NOZORDER | SWP_NOSIZE);
1066     }
1067 }
1068
1069
1070 static LRESULT
1071 TRACKBAR_ClearSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1072 {
1073     infoPtr->lSelMin = 0;
1074     infoPtr->lSelMax = 0;
1075     infoPtr->flags |= TB_SELECTIONCHANGED;
1076
1077     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1078
1079     return 0;
1080 }
1081
1082
1083 static LRESULT
1084 TRACKBAR_ClearTics (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1085 {
1086     if (infoPtr->tics) {
1087         Free (infoPtr->tics);
1088         infoPtr->tics = NULL;
1089         infoPtr->uNumTics = 0;
1090     }
1091
1092     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1093
1094     return 0;
1095 }
1096
1097
1098 static inline LRESULT
1099 TRACKBAR_GetChannelRect (const TRACKBAR_INFO *infoPtr, LPRECT lprc)
1100 {
1101     if (lprc == NULL) return 0;
1102
1103     lprc->left   = infoPtr->rcChannel.left;
1104     lprc->right  = infoPtr->rcChannel.right;
1105     lprc->bottom = infoPtr->rcChannel.bottom;
1106     lprc->top    = infoPtr->rcChannel.top;
1107
1108     return 0;
1109 }
1110
1111
1112 static inline LONG
1113 TRACKBAR_GetNumTics (const TRACKBAR_INFO *infoPtr)
1114 {
1115     if (infoPtr->dwStyle & TBS_NOTICKS) return 0;
1116
1117     return infoPtr->uNumTics + 2;
1118 }
1119
1120
1121 static int __cdecl comp_tics (const void *ap, const void *bp)
1122 {
1123     const DWORD a = *(const DWORD *)ap;
1124     const DWORD b = *(const DWORD *)bp;
1125
1126     if (a < b) return -1;
1127     if (a > b) return 1;
1128     return 0;
1129 }
1130
1131
1132 static inline LONG
1133 TRACKBAR_GetTic (const TRACKBAR_INFO *infoPtr, INT iTic)
1134 {
1135     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1136         return -1;
1137
1138     qsort(infoPtr->tics, infoPtr->uNumTics, sizeof(DWORD), comp_tics);
1139     return infoPtr->tics[iTic];
1140 }
1141
1142
1143 static inline LONG
1144 TRACKBAR_GetTicPos (const TRACKBAR_INFO *infoPtr, INT iTic)
1145 {
1146     LONG range, width, pos, tic;
1147     int offsetthumb;
1148
1149     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1150         return -1;
1151
1152     tic   = TRACKBAR_GetTic (infoPtr, iTic);
1153     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
1154     if (range <= 0) range = 1;
1155     offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
1156     width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
1157     pos   = infoPtr->rcChannel.left + offsetthumb + (width * tic) / range;
1158
1159     return pos;
1160 }
1161
1162
1163 static HWND
1164 TRACKBAR_SetBuddy (TRACKBAR_INFO *infoPtr, BOOL fLocation, HWND hwndBuddy)
1165 {
1166     HWND hwndTemp;
1167
1168     if (fLocation) {
1169         /* buddy is left or above */
1170         hwndTemp = infoPtr->hwndBuddyLA;
1171         infoPtr->hwndBuddyLA = hwndBuddy;
1172     }
1173     else {
1174         /* buddy is right or below */
1175         hwndTemp = infoPtr->hwndBuddyRB;
1176         infoPtr->hwndBuddyRB = hwndBuddy;
1177     }
1178
1179     TRACKBAR_AlignBuddies (infoPtr);
1180
1181     return hwndTemp;
1182 }
1183
1184
1185 static inline LONG
1186 TRACKBAR_SetLineSize (TRACKBAR_INFO *infoPtr, LONG lLineSize)
1187 {
1188     LONG lTemp = infoPtr->lLineSize;
1189
1190     infoPtr->lLineSize = lLineSize;
1191
1192     return lTemp;
1193 }
1194
1195 static void TRACKBAR_UpdatePageSize(TRACKBAR_INFO *infoPtr)
1196 {
1197     if (infoPtr->flags & TB_USER_PAGE)
1198         return;
1199
1200     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1201     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1202 }
1203
1204 static inline LONG
1205 TRACKBAR_SetPageSize (TRACKBAR_INFO *infoPtr, LONG lPageSize)
1206 {
1207     LONG lTemp = infoPtr->lPageSize;
1208
1209     if (lPageSize == -1)
1210     {
1211         infoPtr->flags &= ~TB_USER_PAGE;
1212         TRACKBAR_UpdatePageSize(infoPtr);
1213     }
1214     else
1215     {
1216         infoPtr->flags |= TB_USER_PAGE;
1217         infoPtr->lPageSize = lPageSize;
1218     }
1219
1220     return lTemp;
1221 }
1222
1223
1224 static inline LRESULT
1225 TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
1226 {
1227     LONG oldPos = infoPtr->lPos;
1228     infoPtr->lPos = lPosition;
1229
1230     if (infoPtr->lPos < infoPtr->lRangeMin)
1231         infoPtr->lPos = infoPtr->lRangeMin;
1232
1233     if (infoPtr->lPos > infoPtr->lRangeMax)
1234         infoPtr->lPos = infoPtr->lRangeMax;
1235
1236     if (fPosition && oldPos != lPosition)
1237     {
1238         TRACKBAR_UpdateThumb(infoPtr);
1239         TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
1240     }
1241
1242     return 0;
1243 }
1244
1245 static inline LRESULT
1246 TRACKBAR_SetRange (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG range)
1247 {
1248     BOOL changed = infoPtr->lRangeMin != (SHORT)LOWORD(range) ||
1249                    infoPtr->lRangeMax != (SHORT)HIWORD(range);
1250
1251     infoPtr->lRangeMin = (SHORT)LOWORD(range);
1252     infoPtr->lRangeMax = (SHORT)HIWORD(range);
1253
1254     /* clip position to new min/max limit */
1255     if (infoPtr->lPos < infoPtr->lRangeMin)
1256         infoPtr->lPos = infoPtr->lRangeMin;
1257
1258     if (infoPtr->lPos > infoPtr->lRangeMax)
1259         infoPtr->lPos = infoPtr->lRangeMax;
1260
1261     TRACKBAR_UpdatePageSize(infoPtr);
1262
1263     if (changed) {
1264         if (infoPtr->dwStyle & TBS_AUTOTICKS)
1265             TRACKBAR_RecalculateTics (infoPtr);
1266         infoPtr->flags |= TB_THUMBPOSCHANGED;
1267     }
1268
1269     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1270
1271     return 0;
1272 }
1273
1274
1275 static inline LRESULT
1276 TRACKBAR_SetRangeMax (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMax)
1277 {
1278     BOOL changed = infoPtr->lRangeMax != lMax;
1279     LONG rightmost = max(lMax, infoPtr->lRangeMin);
1280
1281     infoPtr->lRangeMax = lMax;
1282     if (infoPtr->lPos > rightmost) {
1283         infoPtr->lPos = rightmost;
1284         infoPtr->flags |= TB_THUMBPOSCHANGED;
1285     }
1286
1287     TRACKBAR_UpdatePageSize(infoPtr);
1288
1289     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1290         TRACKBAR_RecalculateTics (infoPtr);
1291
1292     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1293
1294     return 0;
1295 }
1296
1297
1298 static inline LRESULT
1299 TRACKBAR_SetRangeMin (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMin)
1300 {
1301     BOOL changed = infoPtr->lRangeMin != lMin;
1302
1303     infoPtr->lRangeMin = lMin;
1304     if (infoPtr->lPos < infoPtr->lRangeMin) {
1305         infoPtr->lPos = infoPtr->lRangeMin;
1306         infoPtr->flags |= TB_THUMBPOSCHANGED;
1307     }
1308
1309     TRACKBAR_UpdatePageSize(infoPtr);
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("position %ld\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     TRACKBAR_UpdateThumb (infoPtr);
1433     return 0;
1434 }
1435
1436
1437 static inline INT
1438 TRACKBAR_SetTipSide (TRACKBAR_INFO *infoPtr, INT fLocation)
1439 {
1440     INT fTemp = infoPtr->fLocation;
1441
1442     infoPtr->fLocation = fLocation;
1443
1444     return fTemp;
1445 }
1446
1447
1448 static inline LRESULT
1449 TRACKBAR_SetToolTips (TRACKBAR_INFO *infoPtr, HWND hwndTT)
1450 {
1451     infoPtr->hwndToolTip = hwndTT;
1452
1453     return 0;
1454 }
1455
1456
1457 static inline BOOL
1458 TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
1459 {
1460     BOOL bTemp = infoPtr->bUnicode;
1461
1462     infoPtr->bUnicode = fUnicode;
1463
1464     return bTemp;
1465 }
1466
1467 static int get_scaled_metric(const TRACKBAR_INFO *infoPtr, int value)
1468 {
1469     return MulDiv(value, GetDpiForWindow(infoPtr->hwndSelf), 96);
1470 }
1471
1472 static LRESULT
1473 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
1474 {
1475     int client_size;
1476     RECT rect;
1477
1478     infoPtr->uThumbLen = get_scaled_metric(infoPtr, infoPtr->dwStyle & TBS_ENABLESELRANGE ? 23 : 21);
1479
1480     if (!(infoPtr->dwStyle & TBS_FIXEDLENGTH))
1481     {
1482         GetClientRect(infoPtr->hwndSelf, &rect);
1483         if (infoPtr->dwStyle & TBS_VERT)
1484             client_size = rect.right - rect.left;
1485         else
1486             client_size = rect.bottom - rect.top;
1487
1488         if (client_size < infoPtr->uThumbLen)
1489             infoPtr->uThumbLen = client_size > get_scaled_metric(infoPtr, 9) ?
1490                 client_size - get_scaled_metric(infoPtr, 5) : get_scaled_metric(infoPtr, 4);
1491     }
1492
1493     TRACKBAR_CalcChannel (infoPtr);
1494     TRACKBAR_UpdateThumb (infoPtr);
1495     infoPtr->flags &= ~TB_SELECTIONCHANGED;
1496
1497     return 0;
1498 }
1499
1500 static void TRACKBAR_RecalculateAll (TRACKBAR_INFO *infoPtr)
1501 {
1502     if (infoPtr->dwStyle & TBS_FIXEDLENGTH)
1503     {
1504         TRACKBAR_CalcChannel(infoPtr);
1505         TRACKBAR_UpdateThumb(infoPtr);
1506     }
1507     else
1508     {
1509         TRACKBAR_InitializeThumb(infoPtr);
1510     }
1511     TRACKBAR_AlignBuddies(infoPtr);
1512 }
1513
1514 static LRESULT
1515 TRACKBAR_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
1516 {
1517     TRACKBAR_INFO *infoPtr;
1518
1519     infoPtr = Alloc (sizeof(TRACKBAR_INFO));
1520     if (!infoPtr) return -1;
1521     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1522
1523     /* set default values */
1524     infoPtr->hwndSelf  = hwnd;
1525     infoPtr->dwStyle   = lpcs->style;
1526     infoPtr->lRangeMin = 0;
1527     infoPtr->lRangeMax = 100;
1528     infoPtr->lLineSize = 1;
1529     infoPtr->lPageSize = TB_DEFAULTPAGESIZE;
1530     infoPtr->lSelMin   = 0;
1531     infoPtr->lSelMax   = 0;
1532     infoPtr->lPos      = 0;
1533     infoPtr->fLocation = TBTS_TOP;
1534     infoPtr->uNumTics  = 0;    /* start and end tic are not included in count*/
1535     infoPtr->uTicFreq  = 1;
1536     infoPtr->tics      = NULL;
1537     infoPtr->hwndNotify= lpcs->hwndParent;
1538
1539     TRACKBAR_InitializeThumb (infoPtr);
1540
1541     /* Create tooltip control */
1542     if (infoPtr->dwStyle & TBS_TOOLTIPS) {
1543
1544         infoPtr->hwndToolTip =
1545             CreateWindowExW (0, TOOLTIPS_CLASSW, NULL, WS_POPUP,
1546                              CW_USEDEFAULT, CW_USEDEFAULT,
1547                              CW_USEDEFAULT, CW_USEDEFAULT,
1548                              hwnd, 0, 0, 0);
1549
1550         if (infoPtr->hwndToolTip) {
1551             TTTOOLINFOW ti;
1552             WCHAR wEmpty[] = L"";
1553             ZeroMemory (&ti, sizeof(ti));
1554             ti.cbSize   = sizeof(ti);
1555             ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
1556             ti.hwnd     = hwnd;
1557             ti.lpszText = wEmpty;
1558
1559             SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
1560          }
1561     }
1562
1563     OpenThemeData (hwnd, themeClass);
1564
1565     return 0;
1566 }
1567
1568
1569 static LRESULT
1570 TRACKBAR_Destroy (TRACKBAR_INFO *infoPtr)
1571 {
1572     /* delete tooltip control */
1573     if (infoPtr->hwndToolTip)
1574         DestroyWindow (infoPtr->hwndToolTip);
1575
1576     Free (infoPtr->tics);
1577     infoPtr->tics = NULL;
1578
1579     SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
1580     CloseThemeData (GetWindowTheme (infoPtr->hwndSelf));
1581     Free (infoPtr);
1582
1583     return 0;
1584 }
1585
1586
1587 static LRESULT
1588 TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr)
1589 {
1590     TRACE("\n");
1591     infoPtr->flags &= ~TB_IS_FOCUSED;
1592     TRACKBAR_InvalidateAll(infoPtr);
1593
1594     return 0;
1595 }
1596
1597 static LRESULT
1598 TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, INT x, INT y)
1599 {
1600     POINT clickPoint;
1601
1602     clickPoint.x = x;
1603     clickPoint.y = y;
1604
1605     SetFocus(infoPtr->hwndSelf);
1606
1607     if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
1608         infoPtr->flags |= TB_DRAG_MODE;
1609         SetCapture (infoPtr->hwndSelf);
1610         TRACKBAR_UpdateToolTip (infoPtr);
1611         TRACKBAR_ActivateToolTip (infoPtr, TRUE);
1612         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1613     } else {
1614         LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
1615         if (dir == 0) return 0;
1616         infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
1617         TRACKBAR_AutoPage (infoPtr, clickPoint);
1618         SetCapture (infoPtr->hwndSelf);
1619         SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
1620     }
1621
1622     return 0;
1623 }
1624
1625
1626 static LRESULT
1627 TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr)
1628 {
1629     if (infoPtr->flags & TB_DRAG_MODE) {
1630         notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
1631         notify_with_scroll (infoPtr, TB_ENDTRACK);
1632         infoPtr->flags &= ~TB_DRAG_MODE;
1633         ReleaseCapture ();
1634         notify(infoPtr, NM_RELEASEDCAPTURE);
1635         TRACKBAR_ActivateToolTip(infoPtr, FALSE);
1636         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1637     }
1638     if (infoPtr->flags & TB_AUTO_PAGE) {
1639         KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
1640         infoPtr->flags &= ~TB_AUTO_PAGE;
1641         notify_with_scroll (infoPtr, TB_ENDTRACK);
1642         ReleaseCapture ();
1643         notify(infoPtr, NM_RELEASEDCAPTURE);
1644     }
1645
1646     return 0;
1647 }
1648
1649
1650 static LRESULT
1651 TRACKBAR_CaptureChanged (const TRACKBAR_INFO *infoPtr)
1652 {
1653     notify_with_scroll (infoPtr, TB_ENDTRACK);
1654     return 0;
1655 }
1656
1657
1658 static LRESULT
1659 TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
1660 {
1661     if (hdc) {
1662         TRACKBAR_Refresh(infoPtr, hdc);
1663     } else {
1664         PAINTSTRUCT ps;
1665         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
1666         TRACKBAR_Refresh (infoPtr, hdc);
1667         EndPaint (infoPtr->hwndSelf, &ps);
1668     }
1669
1670     return 0;
1671 }
1672
1673
1674 static LRESULT
1675 TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr)
1676 {
1677     TRACE("\n");
1678     infoPtr->flags |= TB_IS_FOCUSED;
1679     TRACKBAR_InvalidateAll(infoPtr);
1680
1681     return 0;
1682 }
1683
1684
1685 static LRESULT
1686 TRACKBAR_Size (TRACKBAR_INFO *infoPtr)
1687 {
1688     TRACKBAR_RecalculateAll(infoPtr);
1689     TRACKBAR_InvalidateAll(infoPtr);
1690
1691     return 0;
1692 }
1693
1694 static LRESULT
1695 TRACKBAR_StyleChanged (TRACKBAR_INFO *infoPtr, WPARAM wStyleType,
1696                        const STYLESTRUCT *lpss)
1697 {
1698     if (wStyleType != GWL_STYLE) return 0;
1699
1700     infoPtr->dwStyle = lpss->styleNew;
1701     TRACKBAR_RecalculateAll(infoPtr);
1702     TRACKBAR_InvalidateAll(infoPtr);
1703     return 0;
1704 }
1705
1706 static LRESULT
1707 TRACKBAR_Timer (TRACKBAR_INFO *infoPtr)
1708 {
1709     if (infoPtr->flags & TB_AUTO_PAGE) {
1710         POINT pt;
1711         if (GetCursorPos(&pt))
1712             if (ScreenToClient(infoPtr->hwndSelf, &pt))
1713                 TRACKBAR_AutoPage(infoPtr, pt);
1714     }
1715     return 0;
1716 }
1717
1718
1719 /* update theme after a WM_THEMECHANGED message */
1720 static LRESULT theme_changed (const TRACKBAR_INFO* infoPtr)
1721 {
1722     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
1723     CloseThemeData (theme);
1724     OpenThemeData (infoPtr->hwndSelf, themeClass);
1725     InvalidateRect (infoPtr->hwndSelf, NULL, FALSE);
1726     return 0;
1727 }
1728
1729
1730 static LRESULT
1731 TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, INT x, INT y)
1732 {
1733     INT clickPlace = (infoPtr->dwStyle & TBS_VERT) ? y : x;
1734     LONG dragPos, oldPos = infoPtr->lPos;
1735
1736     TRACE("(x=%d. y=%d)\n", x, y);
1737
1738     if (infoPtr->flags & TB_AUTO_PAGE) {
1739         POINT pt;
1740         pt.x = x;
1741         pt.y = y;
1742         TRACKBAR_AutoPage (infoPtr, pt);
1743         return TRUE;
1744     }
1745
1746     if (!(infoPtr->flags & TB_DRAG_MODE))
1747     {
1748         if (GetWindowTheme (infoPtr->hwndSelf))
1749         {
1750             DWORD oldFlags = infoPtr->flags;
1751             POINT pt;
1752             pt.x = x;
1753             pt.y = y;
1754             if (PtInRect (&infoPtr->rcThumb, pt))
1755             {
1756                 TRACKMOUSEEVENT tme;
1757                 tme.cbSize = sizeof( tme );
1758                 tme.dwFlags = TME_LEAVE;
1759                 tme.hwndTrack = infoPtr->hwndSelf;
1760                 TrackMouseEvent( &tme );
1761                 infoPtr->flags |= TB_THUMB_HOT;
1762             }
1763             else
1764             {
1765                 TRACKMOUSEEVENT tme;
1766                 tme.cbSize = sizeof( tme );
1767                 tme.dwFlags = TME_CANCEL;
1768                 tme.hwndTrack = infoPtr->hwndSelf;
1769                 TrackMouseEvent( &tme );
1770                 infoPtr->flags &= ~TB_THUMB_HOT;
1771             }
1772             if (oldFlags != infoPtr->flags) InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1773         }
1774         return TRUE;
1775     }
1776
1777     dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace);
1778
1779     if (dragPos == oldPos) return TRUE;
1780
1781     infoPtr->lPos = dragPos;
1782     TRACKBAR_UpdateThumb (infoPtr);
1783
1784     notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));
1785
1786     TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
1787     UpdateWindow (infoPtr->hwndSelf);
1788
1789     return TRUE;
1790 }
1791
1792 static BOOL
1793 TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey)
1794 {
1795     BOOL downIsLeft = infoPtr->dwStyle & TBS_DOWNISLEFT;
1796     BOOL vert = infoPtr->dwStyle & TBS_VERT;
1797     LONG pos = infoPtr->lPos;
1798
1799     TRACE("%x\n", nVirtKey);
1800
1801     switch (nVirtKey) {
1802     case VK_UP:
1803         if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1804         else TRACKBAR_LineUp(infoPtr);
1805         break;
1806     case VK_LEFT:
1807         if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1808         else TRACKBAR_LineUp(infoPtr);
1809         break;
1810     case VK_DOWN:
1811         if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1812         else TRACKBAR_LineDown(infoPtr);
1813         break;
1814     case VK_RIGHT:
1815         if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1816         else TRACKBAR_LineDown(infoPtr);
1817         break;
1818     case VK_NEXT:
1819         if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
1820         else TRACKBAR_PageDown(infoPtr);
1821         break;
1822     case VK_PRIOR:
1823         if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
1824         else TRACKBAR_PageUp(infoPtr);
1825         break;
1826     case VK_HOME:
1827         if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
1828         infoPtr->lPos = infoPtr->lRangeMin;
1829         notify_with_scroll (infoPtr, TB_TOP);
1830         break;
1831     case VK_END:
1832         if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
1833         infoPtr->lPos = infoPtr->lRangeMax;
1834         notify_with_scroll (infoPtr, TB_BOTTOM);
1835         break;
1836     }
1837
1838     if (pos != infoPtr->lPos) {
1839         TRACKBAR_UpdateThumb (infoPtr);
1840         TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
1841     }
1842
1843     return TRUE;
1844 }
1845
1846
1847 static inline BOOL
1848 TRACKBAR_KeyUp (const TRACKBAR_INFO *infoPtr, INT nVirtKey)
1849 {
1850     switch (nVirtKey) {
1851     case VK_LEFT:
1852     case VK_UP:
1853     case VK_RIGHT:
1854     case VK_DOWN:
1855     case VK_NEXT:
1856     case VK_PRIOR:
1857     case VK_HOME:
1858     case VK_END:
1859         notify_with_scroll (infoPtr, TB_ENDTRACK);
1860     }
1861     return TRUE;
1862 }
1863
1864
1865 static LRESULT
1866 TRACKBAR_Enable (TRACKBAR_INFO *infoPtr, BOOL enable)
1867 {
1868     if (enable)
1869         infoPtr->dwStyle &= ~WS_DISABLED;
1870     else
1871         infoPtr->dwStyle |= WS_DISABLED;
1872
1873     InvalidateRect(infoPtr->hwndSelf, &infoPtr->rcThumb, TRUE);
1874
1875     return 1;
1876 }
1877
1878 static LRESULT WINAPI
1879 TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1880 {
1881     TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);
1882
1883     TRACE("hwnd %p, msg %x, wparam %Ix, lparam %Ix\n", hwnd, uMsg, wParam, lParam);
1884
1885     if (!infoPtr && (uMsg != WM_CREATE))
1886         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1887
1888     switch (uMsg)
1889     {
1890     case TBM_CLEARSEL:
1891         return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);
1892
1893     case TBM_CLEARTICS:
1894         return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);
1895
1896     case TBM_GETBUDDY:
1897         return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);
1898
1899     case TBM_GETCHANNELRECT:
1900         return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);
1901
1902     case TBM_GETLINESIZE:
1903         return infoPtr->lLineSize;
1904
1905     case TBM_GETNUMTICS:
1906         return TRACKBAR_GetNumTics (infoPtr);
1907
1908     case TBM_GETPAGESIZE:
1909         return infoPtr->lPageSize;
1910
1911     case TBM_GETPOS:
1912         return infoPtr->lPos;
1913
1914     case TBM_GETPTICS:
1915         return (LRESULT)infoPtr->tics;
1916
1917     case TBM_GETRANGEMAX:
1918         return infoPtr->lRangeMax;
1919
1920     case TBM_GETRANGEMIN:
1921         return infoPtr->lRangeMin;
1922
1923     case TBM_GETSELEND:
1924         return infoPtr->lSelMax;
1925
1926     case TBM_GETSELSTART:
1927         return infoPtr->lSelMin;
1928
1929     case TBM_GETTHUMBLENGTH:
1930         return infoPtr->uThumbLen;
1931
1932     case TBM_GETTHUMBRECT:
1933         return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);
1934
1935     case TBM_GETTIC:
1936         return TRACKBAR_GetTic (infoPtr, (INT)wParam);
1937
1938     case TBM_GETTICPOS:
1939         return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);
1940
1941     case TBM_GETTOOLTIPS:
1942         return (LRESULT)infoPtr->hwndToolTip;
1943
1944     case TBM_GETUNICODEFORMAT:
1945         return infoPtr->bUnicode;
1946
1947     case TBM_SETBUDDY:
1948         return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);
1949
1950     case TBM_SETLINESIZE:
1951         return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);
1952
1953     case TBM_SETPAGESIZE:
1954         return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);
1955
1956     case TBM_SETPOS:
1957         return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);
1958
1959     case TBM_SETRANGE:
1960         return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);
1961
1962     case TBM_SETRANGEMAX:
1963         return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);
1964
1965     case TBM_SETRANGEMIN:
1966         return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);
1967
1968     case TBM_SETSEL:
1969         return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);
1970
1971     case TBM_SETSELEND:
1972         return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);
1973
1974     case TBM_SETSELSTART:
1975         return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);
1976
1977     case TBM_SETTHUMBLENGTH:
1978         return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);
1979
1980     case TBM_SETTIC:
1981         return TRACKBAR_SetTic (infoPtr, (LONG)lParam);
1982
1983     case TBM_SETTICFREQ:
1984         return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);
1985
1986     case TBM_SETTIPSIDE:
1987         return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);
1988
1989     case TBM_SETTOOLTIPS:
1990         return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);
1991
1992     case TBM_SETUNICODEFORMAT:
1993         return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);
1994
1995
1996     case WM_CAPTURECHANGED:
1997         if (hwnd == (HWND)lParam) return 0;
1998         return TRACKBAR_CaptureChanged (infoPtr);
1999
2000     case WM_CREATE:
2001         return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);
2002
2003     case WM_DESTROY:
2004         return TRACKBAR_Destroy (infoPtr);
2005
2006     case WM_ENABLE:
2007         return TRACKBAR_Enable (infoPtr, (BOOL)wParam);
2008
2009     case WM_ERASEBKGND:
2010         return 0;
2011
2012     case WM_GETDLGCODE:
2013         return DLGC_WANTARROWS;
2014
2015     case WM_KEYDOWN:
2016         return TRACKBAR_KeyDown (infoPtr, (INT)wParam);
2017
2018     case WM_KEYUP:
2019         return TRACKBAR_KeyUp (infoPtr, (INT)wParam);
2020
2021     case WM_KILLFOCUS:
2022         return TRACKBAR_KillFocus (infoPtr);
2023
2024     case WM_LBUTTONDOWN:
2025         return TRACKBAR_LButtonDown (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2026
2027     case WM_LBUTTONUP:
2028         return TRACKBAR_LButtonUp (infoPtr);
2029
2030     case WM_MOUSELEAVE:
2031         infoPtr->flags &= ~TB_THUMB_HOT;
2032         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
2033         return 0;
2034
2035     case WM_MOUSEMOVE:
2036         return TRACKBAR_MouseMove (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2037
2038     case WM_PRINTCLIENT:
2039     case WM_PAINT:
2040         return TRACKBAR_Paint (infoPtr, (HDC)wParam);
2041
2042     case WM_SETFOCUS:
2043         return TRACKBAR_SetFocus (infoPtr);
2044
2045     case WM_SIZE:
2046         return TRACKBAR_Size (infoPtr);
2047
2048     case WM_STYLECHANGED:
2049         return TRACKBAR_StyleChanged (infoPtr, wParam, (LPSTYLESTRUCT)lParam);
2050
2051     case WM_THEMECHANGED:
2052         return theme_changed (infoPtr);
2053
2054     case WM_TIMER:
2055         return TRACKBAR_Timer (infoPtr);
2056
2057     case WM_WININICHANGE:
2058         return TRACKBAR_InitializeThumb (infoPtr);
2059
2060     default:
2061         if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
2062             ERR("unknown msg %04x, wp %Ix, lp %Ix\n", uMsg, wParam, lParam);
2063         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
2064     }
2065 }
2066
2067
2068 void TRACKBAR_Register (void)
2069 {
2070     WNDCLASSW wndClass;
2071
2072     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
2073     wndClass.style         = CS_GLOBALCLASS;
2074     wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
2075     wndClass.cbClsExtra    = 0;
2076     wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
2077     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
2078     wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
2079     wndClass.lpszClassName = TRACKBAR_CLASSW;
2080
2081     RegisterClassW (&wndClass);
2082 }
2083
2084
2085 void TRACKBAR_Unregister (void)
2086 {
2087     UnregisterClassW (TRACKBAR_CLASSW, NULL);
2088 }