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("  <= %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 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
 903     if (infoPtr->flags & TB_THUMBCHANGED) {
 904         TRACKBAR_UpdateThumb (infoPtr);
 905         if (infoPtr->flags & TB_THUMBSIZECHANGED)
 906             TRACKBAR_CalcChannel (infoPtr);
 907     }
 908     if (infoPtr->flags & TB_SELECTIONCHANGED)
 909         TRACKBAR_CalcSelection (infoPtr);
 910
 911     if (infoPtr->flags & TB_DRAG_MODE)
 912         TRACKBAR_UpdateToolTip (infoPtr);
 913
 914     infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
 915
 916     GetClientRect (infoPtr->hwndSelf, &rcClient);
 917
 918     /* try to render offscreen, if we fail, carrry onscreen */
 919     hdc = CreateCompatibleDC(hdcDst);
 920     if (hdc) {
 921         hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
 922         if (hOffScreenBmp) {
 923             hOldBmp = SelectObject(hdc, hOffScreenBmp);
 924         } else {
 925             DeleteObject(hdc);
 926             hdc = hdcDst;
 927         }
 928     } else {
 929         hdc = hdcDst;
 930     }
 931
 932     ZeroMemory(&nmcd, sizeof(nmcd));
 933     nmcd.hdr.hwndFrom = infoPtr->hwndSelf;
 934     nmcd.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
 935     nmcd.hdr.code = NM_CUSTOMDRAW;
 936     nmcd.hdc = hdc;
 937
 938     /* start the paint cycle */
 939     nmcd.rc = rcClient;
 940     gcdrf = notify_customdraw(infoPtr, &nmcd, CDDS_PREPAINT);
 941     if (gcdrf & CDRF_SKIPDEFAULT) goto cleanup;
 942
 943     /* Erase background */
 944     if (gcdrf == CDRF_DODEFAULT ||
 945         notify_customdraw(infoPtr, &nmcd, CDDS_PREERASE) != CDRF_SKIPDEFAULT) {
 946         if (GetWindowTheme (infoPtr->hwndSelf)) {
 947             DrawThemeParentBackground (infoPtr->hwndSelf, hdc, 0);
 948         }
 949         else {
 950             HBRUSH brush = (HBRUSH)SendMessageW(infoPtr->hwndNotify, WM_CTLCOLORSTATIC,
 951                     (WPARAM)hdc, (LPARAM)infoPtr->hwndSelf);
 952             FillRect (hdc, &rcClient, brush ? brush : GetSysColorBrush(COLOR_BTNFACE));
 953         }
 954         if (gcdrf != CDRF_DODEFAULT)
 955             notify_customdraw(infoPtr, &nmcd, CDDS_POSTERASE);
 956     }
 957
 958     /* draw channel */
 959     if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 960         nmcd.dwItemSpec = TBCD_CHANNEL;
 961         nmcd.uItemState = CDIS_DEFAULT;
 962         nmcd.rc = infoPtr->rcChannel;
 963         icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 964     } else icdrf = CDRF_DODEFAULT;
 965     if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 966         TRACKBAR_DrawChannel (infoPtr, hdc);
 967         if (icdrf & CDRF_NOTIFYPOSTPAINT)
 968             notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 969     }
 970
 971
 972     /* draw tics */
 973     if (!(infoPtr->dwStyle & TBS_NOTICKS)) {
 974         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 975             nmcd.dwItemSpec = TBCD_TICS;
 976             nmcd.uItemState = CDIS_DEFAULT;
 977             nmcd.rc = rcClient;
 978             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 979         } else icdrf = CDRF_DODEFAULT;
 980         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 981             TRACKBAR_DrawTics (infoPtr, hdc);
 982             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 983                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 984         }
 985     }
 986
 987     /* draw thumb */
 988     if (!(infoPtr->dwStyle & TBS_NOTHUMB)) {
 989         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 990             nmcd.dwItemSpec = TBCD_THUMB;
 991             nmcd.uItemState = infoPtr->flags & TB_DRAG_MODE ? CDIS_HOT : CDIS_DEFAULT;
 992             nmcd.rc = infoPtr->rcThumb;
 993             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 994         } else icdrf = CDRF_DODEFAULT;
 995         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 996             TRACKBAR_DrawThumb(infoPtr, hdc);
 997             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 998                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 999         }
1000     }
1001
1002     /* draw focus rectangle */
1003     if (infoPtr->flags & TB_IS_FOCUSED) {
1004         DrawFocusRect(hdc, &rcClient);
1005     }
1006
1007     /* finish up the painting */
1008     if (gcdrf & CDRF_NOTIFYPOSTPAINT)
1009         notify_customdraw(infoPtr, &nmcd, CDDS_POSTPAINT);
1010
1011 cleanup:
1012     /* cleanup, if we rendered offscreen */
1013     if (hdc != hdcDst) {
1014         BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
1015         SelectObject(hdc, hOldBmp);
1016         DeleteObject(hOffScreenBmp);
1017         DeleteObject(hdc);
1018     }
1019 }
1020
1021
1022 static void
1023 TRACKBAR_AlignBuddies (const TRACKBAR_INFO *infoPtr)
1024 {
1025     HWND hwndParent = GetParent (infoPtr->hwndSelf);
1026     RECT rcSelf, rcBuddy;
1027     INT x, y;
1028
1029     GetWindowRect (infoPtr->hwndSelf, &rcSelf);
1030     MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcSelf, 2);
1031
1032     /* align buddy left or above */
1033     if (infoPtr->hwndBuddyLA) {
1034         GetWindowRect (infoPtr->hwndBuddyLA, &rcBuddy);
1035         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1036
1037         if (infoPtr->dwStyle & TBS_VERT) {
1038             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1039                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1040             y = rcSelf.top - (rcBuddy.bottom - rcBuddy.top);
1041         }
1042         else {
1043             x = rcSelf.left - (rcBuddy.right - rcBuddy.left);
1044             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1045                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1046         }
1047
1048         SetWindowPos (infoPtr->hwndBuddyLA, 0, x, y, 0, 0,
1049                       SWP_NOZORDER | SWP_NOSIZE);
1050     }
1051
1052
1053     /* align buddy right or below */
1054     if (infoPtr->hwndBuddyRB) {
1055         GetWindowRect (infoPtr->hwndBuddyRB, &rcBuddy);
1056         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1057
1058         if (infoPtr->dwStyle & TBS_VERT) {
1059             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1060                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1061             y = rcSelf.bottom;
1062         }
1063         else {
1064             x = rcSelf.right;
1065             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1066                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1067         }
1068         SetWindowPos (infoPtr->hwndBuddyRB, 0, x, y, 0, 0,
1069                       SWP_NOZORDER | SWP_NOSIZE);
1070     }
1071 }
1072
1073
1074 static LRESULT
1075 TRACKBAR_ClearSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1076 {
1077     infoPtr->lSelMin = 0;
1078     infoPtr->lSelMax = 0;
1079     infoPtr->flags |= TB_SELECTIONCHANGED;
1080
1081     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1082
1083     return 0;
1084 }
1085
1086
1087 static LRESULT
1088 TRACKBAR_ClearTics (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1089 {
1090     if (infoPtr->tics) {
1091         Free (infoPtr->tics);
1092         infoPtr->tics = NULL;
1093         infoPtr->uNumTics = 0;
1094     }
1095
1096     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1097
1098     return 0;
1099 }
1100
1101
1102 static inline LRESULT
1103 TRACKBAR_GetChannelRect (const TRACKBAR_INFO *infoPtr, LPRECT lprc)
1104 {
1105     if (lprc == NULL) return 0;
1106
1107     lprc->left   = infoPtr->rcChannel.left;
1108     lprc->right  = infoPtr->rcChannel.right;
1109     lprc->bottom = infoPtr->rcChannel.bottom;
1110     lprc->top    = infoPtr->rcChannel.top;
1111
1112     return 0;
1113 }
1114
1115
1116 static inline LONG
1117 TRACKBAR_GetNumTics (const TRACKBAR_INFO *infoPtr)
1118 {
1119     if (infoPtr->dwStyle & TBS_NOTICKS) return 0;
1120
1121     return infoPtr->uNumTics + 2;
1122 }
1123
1124
1125 static int __cdecl comp_tics (const void *ap, const void *bp)
1126 {
1127     const DWORD a = *(const DWORD *)ap;
1128     const DWORD b = *(const DWORD *)bp;
1129
1130     TRACE("(a=%d, b=%d)\n", a, b);
1131     if (a < b) return -1;
1132     if (a > b) return 1;
1133     return 0;
1134 }
1135
1136
1137 static inline LONG
1138 TRACKBAR_GetTic (const TRACKBAR_INFO *infoPtr, INT iTic)
1139 {
1140     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1141         return -1;
1142
1143     qsort(infoPtr->tics, infoPtr->uNumTics, sizeof(DWORD), comp_tics);
1144     return infoPtr->tics[iTic];
1145 }
1146
1147
1148 static inline LONG
1149 TRACKBAR_GetTicPos (const TRACKBAR_INFO *infoPtr, INT iTic)
1150 {
1151     LONG range, width, pos, tic;
1152     int offsetthumb;
1153
1154     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1155         return -1;
1156
1157     tic   = TRACKBAR_GetTic (infoPtr, iTic);
1158     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
1159     if (range <= 0) range = 1;
1160     offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
1161     width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
1162     pos   = infoPtr->rcChannel.left + offsetthumb + (width * tic) / range;
1163
1164     return pos;
1165 }
1166
1167
1168 static HWND
1169 TRACKBAR_SetBuddy (TRACKBAR_INFO *infoPtr, BOOL fLocation, HWND hwndBuddy)
1170 {
1171     HWND hwndTemp;
1172
1173     if (fLocation) {
1174         /* buddy is left or above */
1175         hwndTemp = infoPtr->hwndBuddyLA;
1176         infoPtr->hwndBuddyLA = hwndBuddy;
1177     }
1178     else {
1179         /* buddy is right or below */
1180         hwndTemp = infoPtr->hwndBuddyRB;
1181         infoPtr->hwndBuddyRB = hwndBuddy;
1182     }
1183
1184     TRACKBAR_AlignBuddies (infoPtr);
1185
1186     return hwndTemp;
1187 }
1188
1189
1190 static inline LONG
1191 TRACKBAR_SetLineSize (TRACKBAR_INFO *infoPtr, LONG lLineSize)
1192 {
1193     LONG lTemp = infoPtr->lLineSize;
1194
1195     infoPtr->lLineSize = lLineSize;
1196
1197     return lTemp;
1198 }
1199
1200 static void TRACKBAR_UpdatePageSize(TRACKBAR_INFO *infoPtr)
1201 {
1202     if (infoPtr->flags & TB_USER_PAGE)
1203         return;
1204
1205     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1206     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1207 }
1208
1209 static inline LONG
1210 TRACKBAR_SetPageSize (TRACKBAR_INFO *infoPtr, LONG lPageSize)
1211 {
1212     LONG lTemp = infoPtr->lPageSize;
1213
1214     if (lPageSize == -1)
1215     {
1216         infoPtr->flags &= ~TB_USER_PAGE;
1217         TRACKBAR_UpdatePageSize(infoPtr);
1218     }
1219     else
1220     {
1221         infoPtr->flags |= TB_USER_PAGE;
1222         infoPtr->lPageSize = lPageSize;
1223     }
1224
1225     return lTemp;
1226 }
1227
1228
1229 static inline LRESULT
1230 TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
1231 {
1232     LONG oldPos = infoPtr->lPos;
1233     infoPtr->lPos = lPosition;
1234
1235     if (infoPtr->lPos < infoPtr->lRangeMin)
1236         infoPtr->lPos = infoPtr->lRangeMin;
1237
1238     if (infoPtr->lPos > infoPtr->lRangeMax)
1239         infoPtr->lPos = infoPtr->lRangeMax;
1240
1241     if (fPosition && oldPos != lPosition)
1242     {
1243         TRACKBAR_UpdateThumb(infoPtr);
1244         TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
1245     }
1246
1247     return 0;
1248 }
1249
1250 static inline LRESULT
1251 TRACKBAR_SetRange (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG range)
1252 {
1253     BOOL changed = infoPtr->lRangeMin != (SHORT)LOWORD(range) ||
1254                    infoPtr->lRangeMax != (SHORT)HIWORD(range);
1255
1256     infoPtr->lRangeMin = (SHORT)LOWORD(range);
1257     infoPtr->lRangeMax = (SHORT)HIWORD(range);
1258
1259     /* clip position to new min/max limit */
1260     if (infoPtr->lPos < infoPtr->lRangeMin)
1261         infoPtr->lPos = infoPtr->lRangeMin;
1262
1263     if (infoPtr->lPos > infoPtr->lRangeMax)
1264         infoPtr->lPos = infoPtr->lRangeMax;
1265
1266     TRACKBAR_UpdatePageSize(infoPtr);
1267
1268     if (changed) {
1269         if (infoPtr->dwStyle & TBS_AUTOTICKS)
1270             TRACKBAR_RecalculateTics (infoPtr);
1271         infoPtr->flags |= TB_THUMBPOSCHANGED;
1272     }
1273
1274     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1275
1276     return 0;
1277 }
1278
1279
1280 static inline LRESULT
1281 TRACKBAR_SetRangeMax (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMax)
1282 {
1283     BOOL changed = infoPtr->lRangeMax != lMax;
1284     LONG rightmost = max(lMax, infoPtr->lRangeMin);
1285
1286     infoPtr->lRangeMax = lMax;
1287     if (infoPtr->lPos > rightmost) {
1288         infoPtr->lPos = rightmost;
1289         infoPtr->flags |= TB_THUMBPOSCHANGED;
1290     }
1291
1292     TRACKBAR_UpdatePageSize(infoPtr);
1293
1294     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1295         TRACKBAR_RecalculateTics (infoPtr);
1296
1297     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1298
1299     return 0;
1300 }
1301
1302
1303 static inline LRESULT
1304 TRACKBAR_SetRangeMin (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMin)
1305 {
1306     BOOL changed = infoPtr->lRangeMin != lMin;
1307
1308     infoPtr->lRangeMin = lMin;
1309     if (infoPtr->lPos < infoPtr->lRangeMin) {
1310         infoPtr->lPos = infoPtr->lRangeMin;
1311         infoPtr->flags |= TB_THUMBPOSCHANGED;
1312     }
1313
1314     TRACKBAR_UpdatePageSize(infoPtr);
1315
1316     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1317         TRACKBAR_RecalculateTics (infoPtr);
1318
1319     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1320
1321     return 0;
1322 }
1323
1324
1325 static inline LRESULT
1326 TRACKBAR_SetSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lSel)
1327 {
1328     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1329         infoPtr->lSelMin = 0;
1330         infoPtr->lSelMax = 0;
1331         return 0;
1332     }
1333
1334     infoPtr->lSelMin = (SHORT)LOWORD(lSel);
1335     infoPtr->lSelMax = (SHORT)HIWORD(lSel);
1336     infoPtr->flags |= TB_SELECTIONCHANGED;
1337
1338     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1339         infoPtr->lSelMin = infoPtr->lRangeMin;
1340     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1341         infoPtr->lSelMax = infoPtr->lRangeMax;
1342
1343     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1344
1345     return 0;
1346 }
1347
1348
1349 static inline LRESULT
1350 TRACKBAR_SetSelEnd (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lEnd)
1351 {
1352     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1353         infoPtr->lSelMax = 0;
1354         return 0;
1355     }
1356
1357     infoPtr->lSelMax = lEnd;
1358     infoPtr->flags |= TB_SELECTIONCHANGED;
1359
1360     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1361         infoPtr->lSelMax = infoPtr->lRangeMax;
1362
1363     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1364
1365     return 0;
1366 }
1367
1368
1369 static inline LRESULT
1370 TRACKBAR_SetSelStart (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lStart)
1371 {
1372     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1373         infoPtr->lSelMin = 0;
1374         return 0;
1375     }
1376
1377     infoPtr->lSelMin = lStart;
1378     infoPtr->flags  |=TB_SELECTIONCHANGED;
1379
1380     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1381         infoPtr->lSelMin = infoPtr->lRangeMin;
1382
1383     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1384
1385     return 0;
1386 }
1387
1388
1389 static inline LRESULT
1390 TRACKBAR_SetThumbLength (TRACKBAR_INFO *infoPtr, UINT iLength)
1391 {
1392     if (infoPtr->dwStyle & TBS_FIXEDLENGTH) {
1393         /* We're not supposed to check if it's really changed or not,
1394            just repaint in any case. */
1395         infoPtr->uThumbLen = iLength;
1396         infoPtr->flags |= TB_THUMBSIZECHANGED;
1397         TRACKBAR_InvalidateAll(infoPtr);
1398     }
1399
1400     return 0;
1401 }
1402
1403
1404 static inline LRESULT
1405 TRACKBAR_SetTic (TRACKBAR_INFO *infoPtr, LONG lPos)
1406 {
1407     if ((lPos < infoPtr->lRangeMin) || (lPos> infoPtr->lRangeMax))
1408         return FALSE;
1409
1410     TRACE("lPos=%d\n", lPos);
1411
1412     infoPtr->uNumTics++;
1413     infoPtr->tics=ReAlloc( infoPtr->tics,
1414                                     (infoPtr->uNumTics)*sizeof (DWORD));
1415     if (!infoPtr->tics) {
1416         infoPtr->uNumTics = 0;
1417         notify(infoPtr, NM_OUTOFMEMORY);
1418         return FALSE;
1419     }
1420     infoPtr->tics[infoPtr->uNumTics-1] = lPos;
1421
1422     TRACKBAR_InvalidateAll(infoPtr);
1423
1424     return TRUE;
1425 }
1426
1427
1428 static inline LRESULT
1429 TRACKBAR_SetTicFreq (TRACKBAR_INFO *infoPtr, WORD wFreq)
1430 {
1431     if (infoPtr->dwStyle & TBS_AUTOTICKS) {
1432         infoPtr->uTicFreq = wFreq;
1433         TRACKBAR_RecalculateTics (infoPtr);
1434         TRACKBAR_InvalidateAll(infoPtr);
1435     }
1436
1437     TRACKBAR_UpdateThumb (infoPtr);
1438     return 0;
1439 }
1440
1441
1442 static inline INT
1443 TRACKBAR_SetTipSide (TRACKBAR_INFO *infoPtr, INT fLocation)
1444 {
1445     INT fTemp = infoPtr->fLocation;
1446
1447     infoPtr->fLocation = fLocation;
1448
1449     return fTemp;
1450 }
1451
1452
1453 static inline LRESULT
1454 TRACKBAR_SetToolTips (TRACKBAR_INFO *infoPtr, HWND hwndTT)
1455 {
1456     infoPtr->hwndToolTip = hwndTT;
1457
1458     return 0;
1459 }
1460
1461
1462 static inline BOOL
1463 TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
1464 {
1465     BOOL bTemp = infoPtr->bUnicode;
1466
1467     infoPtr->bUnicode = fUnicode;
1468
1469     return bTemp;
1470 }
1471
1472 static int get_scaled_metric(const TRACKBAR_INFO *infoPtr, int value)
1473 {
1474     return MulDiv(value, GetDpiForWindow(infoPtr->hwndSelf), 96);
1475 }
1476
1477 static LRESULT
1478 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
1479 {
1480     int client_size;
1481     RECT rect;
1482
1483     infoPtr->uThumbLen = get_scaled_metric(infoPtr, infoPtr->dwStyle & TBS_ENABLESELRANGE ? 23 : 21);
1484
1485     if (!(infoPtr->dwStyle & TBS_FIXEDLENGTH))
1486     {
1487         GetClientRect(infoPtr->hwndSelf, &rect);
1488         if (infoPtr->dwStyle & TBS_VERT)
1489             client_size = rect.right - rect.left;
1490         else
1491             client_size = rect.bottom - rect.top;
1492
1493         if (client_size < infoPtr->uThumbLen)
1494             infoPtr->uThumbLen = client_size > get_scaled_metric(infoPtr, 9) ?
1495                 client_size - get_scaled_metric(infoPtr, 5) : get_scaled_metric(infoPtr, 4);
1496     }
1497
1498     TRACKBAR_CalcChannel (infoPtr);
1499     TRACKBAR_UpdateThumb (infoPtr);
1500     infoPtr->flags &= ~TB_SELECTIONCHANGED;
1501
1502     return 0;
1503 }
1504
1505 static void TRACKBAR_RecalculateAll (TRACKBAR_INFO *infoPtr)
1506 {
1507     if (infoPtr->dwStyle & TBS_FIXEDLENGTH)
1508     {
1509         TRACKBAR_CalcChannel(infoPtr);
1510         TRACKBAR_UpdateThumb(infoPtr);
1511     }
1512     else
1513     {
1514         TRACKBAR_InitializeThumb(infoPtr);
1515     }
1516     TRACKBAR_AlignBuddies(infoPtr);
1517 }
1518
1519 static LRESULT
1520 TRACKBAR_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
1521 {
1522     TRACKBAR_INFO *infoPtr;
1523
1524     infoPtr = Alloc (sizeof(TRACKBAR_INFO));
1525     if (!infoPtr) return -1;
1526     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1527
1528     /* set default values */
1529     infoPtr->hwndSelf  = hwnd;
1530     infoPtr->dwStyle   = lpcs->style;
1531     infoPtr->lRangeMin = 0;
1532     infoPtr->lRangeMax = 100;
1533     infoPtr->lLineSize = 1;
1534     infoPtr->lPageSize = TB_DEFAULTPAGESIZE;
1535     infoPtr->lSelMin   = 0;
1536     infoPtr->lSelMax   = 0;
1537     infoPtr->lPos      = 0;
1538     infoPtr->fLocation = TBTS_TOP;
1539     infoPtr->uNumTics  = 0;    /* start and end tic are not included in count*/
1540     infoPtr->uTicFreq  = 1;
1541     infoPtr->tics      = NULL;
1542     infoPtr->hwndNotify= lpcs->hwndParent;
1543
1544     TRACKBAR_InitializeThumb (infoPtr);
1545
1546     /* Create tooltip control */
1547     if (infoPtr->dwStyle & TBS_TOOLTIPS) {
1548
1549         infoPtr->hwndToolTip =
1550             CreateWindowExW (0, TOOLTIPS_CLASSW, NULL, WS_POPUP,
1551                              CW_USEDEFAULT, CW_USEDEFAULT,
1552                              CW_USEDEFAULT, CW_USEDEFAULT,
1553                              hwnd, 0, 0, 0);
1554
1555         if (infoPtr->hwndToolTip) {
1556             TTTOOLINFOW ti;
1557             WCHAR wEmpty[] = L"";
1558             ZeroMemory (&ti, sizeof(ti));
1559             ti.cbSize   = sizeof(ti);
1560             ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
1561             ti.hwnd     = hwnd;
1562             ti.lpszText = wEmpty;
1563
1564             SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
1565          }
1566     }
1567
1568     OpenThemeData (hwnd, themeClass);
1569
1570     return 0;
1571 }
1572
1573
1574 static LRESULT
1575 TRACKBAR_Destroy (TRACKBAR_INFO *infoPtr)
1576 {
1577     /* delete tooltip control */
1578     if (infoPtr->hwndToolTip)
1579         DestroyWindow (infoPtr->hwndToolTip);
1580
1581     Free (infoPtr->tics);
1582     infoPtr->tics = NULL;
1583
1584     SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
1585     CloseThemeData (GetWindowTheme (infoPtr->hwndSelf));
1586     Free (infoPtr);
1587
1588     return 0;
1589 }
1590
1591
1592 static LRESULT
1593 TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr)
1594 {
1595     TRACE("\n");
1596     infoPtr->flags &= ~TB_IS_FOCUSED;
1597     TRACKBAR_InvalidateAll(infoPtr);
1598
1599     return 0;
1600 }
1601
1602 static LRESULT
1603 TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, INT x, INT y)
1604 {
1605     POINT clickPoint;
1606
1607     clickPoint.x = x;
1608     clickPoint.y = y;
1609
1610     SetFocus(infoPtr->hwndSelf);
1611
1612     if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
1613         infoPtr->flags |= TB_DRAG_MODE;
1614         SetCapture (infoPtr->hwndSelf);
1615         TRACKBAR_UpdateToolTip (infoPtr);
1616         TRACKBAR_ActivateToolTip (infoPtr, TRUE);
1617         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1618     } else {
1619         LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
1620         if (dir == 0) return 0;
1621         infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
1622         TRACKBAR_AutoPage (infoPtr, clickPoint);
1623         SetCapture (infoPtr->hwndSelf);
1624         SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
1625     }
1626
1627     return 0;
1628 }
1629
1630
1631 static LRESULT
1632 TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr)
1633 {
1634     if (infoPtr->flags & TB_DRAG_MODE) {
1635         notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
1636         notify_with_scroll (infoPtr, TB_ENDTRACK);
1637         infoPtr->flags &= ~TB_DRAG_MODE;
1638         ReleaseCapture ();
1639         notify(infoPtr, NM_RELEASEDCAPTURE);
1640         TRACKBAR_ActivateToolTip(infoPtr, FALSE);
1641         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1642     }
1643     if (infoPtr->flags & TB_AUTO_PAGE) {
1644         KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
1645         infoPtr->flags &= ~TB_AUTO_PAGE;
1646         notify_with_scroll (infoPtr, TB_ENDTRACK);
1647         ReleaseCapture ();
1648         notify(infoPtr, NM_RELEASEDCAPTURE);
1649     }
1650
1651     return 0;
1652 }
1653
1654
1655 static LRESULT
1656 TRACKBAR_CaptureChanged (const TRACKBAR_INFO *infoPtr)
1657 {
1658     notify_with_scroll (infoPtr, TB_ENDTRACK);
1659     return 0;
1660 }
1661
1662
1663 static LRESULT
1664 TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
1665 {
1666     if (hdc) {
1667         TRACKBAR_Refresh(infoPtr, hdc);
1668     } else {
1669         PAINTSTRUCT ps;
1670         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
1671         TRACKBAR_Refresh (infoPtr, hdc);
1672         EndPaint (infoPtr->hwndSelf, &ps);
1673     }
1674
1675     return 0;
1676 }
1677
1678
1679 static LRESULT
1680 TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr)
1681 {
1682     TRACE("\n");
1683     infoPtr->flags |= TB_IS_FOCUSED;
1684     TRACKBAR_InvalidateAll(infoPtr);
1685
1686     return 0;
1687 }
1688
1689
1690 static LRESULT
1691 TRACKBAR_Size (TRACKBAR_INFO *infoPtr)
1692 {
1693     TRACKBAR_RecalculateAll(infoPtr);
1694     TRACKBAR_InvalidateAll(infoPtr);
1695
1696     return 0;
1697 }
1698
1699 static LRESULT
1700 TRACKBAR_StyleChanged (TRACKBAR_INFO *infoPtr, WPARAM wStyleType,
1701                        const STYLESTRUCT *lpss)
1702 {
1703     if (wStyleType != GWL_STYLE) return 0;
1704
1705     infoPtr->dwStyle = lpss->styleNew;
1706     TRACKBAR_RecalculateAll(infoPtr);
1707     TRACKBAR_InvalidateAll(infoPtr);
1708     return 0;
1709 }
1710
1711 static LRESULT
1712 TRACKBAR_Timer (TRACKBAR_INFO *infoPtr)
1713 {
1714     if (infoPtr->flags & TB_AUTO_PAGE) {
1715         POINT pt;
1716         if (GetCursorPos(&pt))
1717             if (ScreenToClient(infoPtr->hwndSelf, &pt))
1718                 TRACKBAR_AutoPage(infoPtr, pt);
1719     }
1720     return 0;
1721 }
1722
1723
1724 /* update theme after a WM_THEMECHANGED message */
1725 static LRESULT theme_changed (const TRACKBAR_INFO* infoPtr)
1726 {
1727     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
1728     CloseThemeData (theme);
1729     OpenThemeData (infoPtr->hwndSelf, themeClass);
1730     InvalidateRect (infoPtr->hwndSelf, NULL, FALSE);
1731     return 0;
1732 }
1733
1734
1735 static LRESULT
1736 TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, INT x, INT y)
1737 {
1738     INT clickPlace = (infoPtr->dwStyle & TBS_VERT) ? y : x;
1739     LONG dragPos, oldPos = infoPtr->lPos;
1740
1741     TRACE("(x=%d. y=%d)\n", x, y);
1742
1743     if (infoPtr->flags & TB_AUTO_PAGE) {
1744         POINT pt;
1745         pt.x = x;
1746         pt.y = y;
1747         TRACKBAR_AutoPage (infoPtr, pt);
1748         return TRUE;
1749     }
1750
1751     if (!(infoPtr->flags & TB_DRAG_MODE))
1752     {
1753         if (GetWindowTheme (infoPtr->hwndSelf))
1754         {
1755             DWORD oldFlags = infoPtr->flags;
1756             POINT pt;
1757             pt.x = x;
1758             pt.y = y;
1759             if (PtInRect (&infoPtr->rcThumb, pt))
1760             {
1761                 TRACKMOUSEEVENT tme;
1762                 tme.cbSize = sizeof( tme );
1763                 tme.dwFlags = TME_LEAVE;
1764                 tme.hwndTrack = infoPtr->hwndSelf;
1765                 TrackMouseEvent( &tme );
1766                 infoPtr->flags |= TB_THUMB_HOT;
1767             }
1768             else
1769             {
1770                 TRACKMOUSEEVENT tme;
1771                 tme.cbSize = sizeof( tme );
1772                 tme.dwFlags = TME_CANCEL;
1773                 tme.hwndTrack = infoPtr->hwndSelf;
1774                 TrackMouseEvent( &tme );
1775                 infoPtr->flags &= ~TB_THUMB_HOT;
1776             }
1777             if (oldFlags != infoPtr->flags) InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1778         }
1779         return TRUE;
1780     }
1781
1782     dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace);
1783
1784     if (dragPos == oldPos) return TRUE;
1785
1786     infoPtr->lPos = dragPos;
1787     TRACKBAR_UpdateThumb (infoPtr);
1788
1789     notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));
1790
1791     TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
1792     UpdateWindow (infoPtr->hwndSelf);
1793
1794     return TRUE;
1795 }
1796
1797 static BOOL
1798 TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey)
1799 {
1800     BOOL downIsLeft = infoPtr->dwStyle & TBS_DOWNISLEFT;
1801     BOOL vert = infoPtr->dwStyle & TBS_VERT;
1802     LONG pos = infoPtr->lPos;
1803
1804     TRACE("%x\n", nVirtKey);
1805
1806     switch (nVirtKey) {
1807     case VK_UP:
1808         if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1809         else TRACKBAR_LineUp(infoPtr);
1810         break;
1811     case VK_LEFT:
1812         if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1813         else TRACKBAR_LineUp(infoPtr);
1814         break;
1815     case VK_DOWN:
1816         if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1817         else TRACKBAR_LineDown(infoPtr);
1818         break;
1819     case VK_RIGHT:
1820         if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1821         else TRACKBAR_LineDown(infoPtr);
1822         break;
1823     case VK_NEXT:
1824         if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
1825         else TRACKBAR_PageDown(infoPtr);
1826         break;
1827     case VK_PRIOR:
1828         if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
1829         else TRACKBAR_PageUp(infoPtr);
1830         break;
1831     case VK_HOME:
1832         if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
1833         infoPtr->lPos = infoPtr->lRangeMin;
1834         notify_with_scroll (infoPtr, TB_TOP);
1835         break;
1836     case VK_END:
1837         if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
1838         infoPtr->lPos = infoPtr->lRangeMax;
1839         notify_with_scroll (infoPtr, TB_BOTTOM);
1840         break;
1841     }
1842
1843     if (pos != infoPtr->lPos) {
1844         TRACKBAR_UpdateThumb (infoPtr);
1845         TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
1846     }
1847
1848     return TRUE;
1849 }
1850
1851
1852 static inline BOOL
1853 TRACKBAR_KeyUp (const TRACKBAR_INFO *infoPtr, INT nVirtKey)
1854 {
1855     switch (nVirtKey) {
1856     case VK_LEFT:
1857     case VK_UP:
1858     case VK_RIGHT:
1859     case VK_DOWN:
1860     case VK_NEXT:
1861     case VK_PRIOR:
1862     case VK_HOME:
1863     case VK_END:
1864         notify_with_scroll (infoPtr, TB_ENDTRACK);
1865     }
1866     return TRUE;
1867 }
1868
1869
1870 static LRESULT
1871 TRACKBAR_Enable (TRACKBAR_INFO *infoPtr, BOOL enable)
1872 {
1873     if (enable)
1874         infoPtr->dwStyle &= ~WS_DISABLED;
1875     else
1876         infoPtr->dwStyle |= WS_DISABLED;
1877
1878     InvalidateRect(infoPtr->hwndSelf, &infoPtr->rcThumb, TRUE);
1879
1880     return 1;
1881 }
1882
1883 static LRESULT WINAPI
1884 TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1885 {
1886     TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);
1887
1888     TRACE("hwnd=%p msg=%x wparam=%lx lparam=%lx\n", hwnd, uMsg, wParam, lParam);
1889
1890     if (!infoPtr && (uMsg != WM_CREATE))
1891         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1892
1893     switch (uMsg)
1894     {
1895     case TBM_CLEARSEL:
1896         return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);
1897
1898     case TBM_CLEARTICS:
1899         return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);
1900
1901     case TBM_GETBUDDY:
1902         return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);
1903
1904     case TBM_GETCHANNELRECT:
1905         return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);
1906
1907     case TBM_GETLINESIZE:
1908         return infoPtr->lLineSize;
1909
1910     case TBM_GETNUMTICS:
1911         return TRACKBAR_GetNumTics (infoPtr);
1912
1913     case TBM_GETPAGESIZE:
1914         return infoPtr->lPageSize;
1915
1916     case TBM_GETPOS:
1917         return infoPtr->lPos;
1918
1919     case TBM_GETPTICS:
1920         return (LRESULT)infoPtr->tics;
1921
1922     case TBM_GETRANGEMAX:
1923         return infoPtr->lRangeMax;
1924
1925     case TBM_GETRANGEMIN:
1926         return infoPtr->lRangeMin;
1927
1928     case TBM_GETSELEND:
1929         return infoPtr->lSelMax;
1930
1931     case TBM_GETSELSTART:
1932         return infoPtr->lSelMin;
1933
1934     case TBM_GETTHUMBLENGTH:
1935         return infoPtr->uThumbLen;
1936
1937     case TBM_GETTHUMBRECT:
1938         return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);
1939
1940     case TBM_GETTIC:
1941         return TRACKBAR_GetTic (infoPtr, (INT)wParam);
1942
1943     case TBM_GETTICPOS:
1944         return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);
1945
1946     case TBM_GETTOOLTIPS:
1947         return (LRESULT)infoPtr->hwndToolTip;
1948
1949     case TBM_GETUNICODEFORMAT:
1950         return infoPtr->bUnicode;
1951
1952     case TBM_SETBUDDY:
1953         return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);
1954
1955     case TBM_SETLINESIZE:
1956         return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);
1957
1958     case TBM_SETPAGESIZE:
1959         return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);
1960
1961     case TBM_SETPOS:
1962         return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);
1963
1964     case TBM_SETRANGE:
1965         return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);
1966
1967     case TBM_SETRANGEMAX:
1968         return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);
1969
1970     case TBM_SETRANGEMIN:
1971         return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);
1972
1973     case TBM_SETSEL:
1974         return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);
1975
1976     case TBM_SETSELEND:
1977         return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);
1978
1979     case TBM_SETSELSTART:
1980         return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);
1981
1982     case TBM_SETTHUMBLENGTH:
1983         return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);
1984
1985     case TBM_SETTIC:
1986         return TRACKBAR_SetTic (infoPtr, (LONG)lParam);
1987
1988     case TBM_SETTICFREQ:
1989         return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);
1990
1991     case TBM_SETTIPSIDE:
1992         return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);
1993
1994     case TBM_SETTOOLTIPS:
1995         return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);
1996
1997     case TBM_SETUNICODEFORMAT:
1998         return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);
1999
2000
2001     case WM_CAPTURECHANGED:
2002         if (hwnd == (HWND)lParam) return 0;
2003         return TRACKBAR_CaptureChanged (infoPtr);
2004
2005     case WM_CREATE:
2006         return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);
2007
2008     case WM_DESTROY:
2009         return TRACKBAR_Destroy (infoPtr);
2010
2011     case WM_ENABLE:
2012         return TRACKBAR_Enable (infoPtr, (BOOL)wParam);
2013
2014     case WM_ERASEBKGND:
2015         return 0;
2016
2017     case WM_GETDLGCODE:
2018         return DLGC_WANTARROWS;
2019
2020     case WM_KEYDOWN:
2021         return TRACKBAR_KeyDown (infoPtr, (INT)wParam);
2022
2023     case WM_KEYUP:
2024         return TRACKBAR_KeyUp (infoPtr, (INT)wParam);
2025
2026     case WM_KILLFOCUS:
2027         return TRACKBAR_KillFocus (infoPtr);
2028
2029     case WM_LBUTTONDOWN:
2030         return TRACKBAR_LButtonDown (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2031
2032     case WM_LBUTTONUP:
2033         return TRACKBAR_LButtonUp (infoPtr);
2034
2035     case WM_MOUSELEAVE:
2036         infoPtr->flags &= ~TB_THUMB_HOT;
2037         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
2038         return 0;
2039
2040     case WM_MOUSEMOVE:
2041         return TRACKBAR_MouseMove (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2042
2043     case WM_PRINTCLIENT:
2044     case WM_PAINT:
2045         return TRACKBAR_Paint (infoPtr, (HDC)wParam);
2046
2047     case WM_SETFOCUS:
2048         return TRACKBAR_SetFocus (infoPtr);
2049
2050     case WM_SIZE:
2051         return TRACKBAR_Size (infoPtr);
2052
2053     case WM_STYLECHANGED:
2054         return TRACKBAR_StyleChanged (infoPtr, wParam, (LPSTYLESTRUCT)lParam);
2055
2056     case WM_THEMECHANGED:
2057         return theme_changed (infoPtr);
2058
2059     case WM_TIMER:
2060         return TRACKBAR_Timer (infoPtr);
2061
2062     case WM_WININICHANGE:
2063         return TRACKBAR_InitializeThumb (infoPtr);
2064
2065     default:
2066         if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
2067             ERR("unknown msg %04x wp=%08lx lp=%08lx\n", uMsg, wParam, lParam);
2068         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
2069     }
2070 }
2071
2072
2073 void TRACKBAR_Register (void)
2074 {
2075     WNDCLASSW wndClass;
2076
2077     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
2078     wndClass.style         = CS_GLOBALCLASS;
2079     wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
2080     wndClass.cbClsExtra    = 0;
2081     wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
2082     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
2083     wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
2084     wndClass.lpszClassName = TRACKBAR_CLASSW;
2085
2086     RegisterClassW (&wndClass);
2087 }
2088
2089
2090 void TRACKBAR_Unregister (void)
2091 {
2092     UnregisterClassW (TRACKBAR_CLASSW, NULL);
2093 }