dlls/comctl32/trackbar.c

   1 /*
   2  * Trackbar control
   3  *
   4  * Copyright 1998, 1999 Eric Kohl
   5  * Copyright 1998, 1999 Alex Priem
   6  * Copyright 2002 Dimitrie O. Paun
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  * NOTE
  23  *
  24  * This code was audited for completeness against the documented features
  25  * of Comctl32.dll version 6.0 on Sep. 12, 2002, by Dimitrie O. Paun.
  26  *
  27  * Unless otherwise noted, we believe this code to be complete, as per
  28  * the specification mentioned above.
  29  * If you discover missing features, or bugs, please note them below.
  30  *
  31  */
  32
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 #include "windef.h"
  39 #include "winbase.h"
  40 #include "wingdi.h"
  41 #include "winuser.h"
  42 #include "winnls.h"
  43 #include "commctrl.h"
  44 #include "uxtheme.h"
  45 #include "tmschema.h"
  46 #include "wine/debug.h"
  47
  48 #include "comctl32.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(trackbar);
  51
  52 typedef struct
  53 {
  54     HWND hwndSelf;
  55     LONG lRangeMin;
  56     LONG lRangeMax;
  57     LONG lLineSize;
  58     LONG lPageSize;
  59     LONG lSelMin;
  60     LONG lSelMax;
  61     LONG lPos;
  62     UINT uThumbLen;
  63     UINT uNumTics;
  64     UINT uTicFreq;
  65     HWND hwndNotify;
  66     HWND hwndToolTip;
  67     HWND hwndBuddyLA;
  68     HWND hwndBuddyRB;
  69     INT  fLocation;
  70     INT  flags;
  71     BOOL bUnicode;
  72     BOOL bFocussed;
  73     RECT rcChannel;
  74     RECT rcSelection;
  75     RECT rcThumb;
  76     LPLONG tics;
  77 } TRACKBAR_INFO;
  78
  79 #define TB_REFRESH_TIMER        1
  80 #define TB_REFRESH_DELAY        500
  81
  82 #define TOOLTIP_OFFSET          2     /* distance from ctrl edge to tooltip */
  83
  84 /* Used by TRACKBAR_Refresh to find out which parts of the control
  85    need to be recalculated */
  86
  87 #define TB_THUMBPOSCHANGED      1
  88 #define TB_THUMBSIZECHANGED     2
  89 #define TB_THUMBCHANGED         (TB_THUMBPOSCHANGED | TB_THUMBSIZECHANGED)
  90 #define TB_SELECTIONCHANGED     4
  91 #define TB_DRAG_MODE            8     /* we're dragging the slider */
  92 #define TB_AUTO_PAGE_LEFT       16
  93 #define TB_AUTO_PAGE_RIGHT      32
  94 #define TB_AUTO_PAGE            (TB_AUTO_PAGE_LEFT | TB_AUTO_PAGE_RIGHT)
  95 #define TB_THUMB_HOT            64    /* mouse hovers above thumb */
  96
  97 /* helper defines for TRACKBAR_DrawTic */
  98 #define TIC_EDGE                0x20
  99 #define TIC_SELECTIONMARKMAX    0x80
 100 #define TIC_SELECTIONMARKMIN    0x100
 101 #define TIC_SELECTIONMARK       (TIC_SELECTIONMARKMAX | TIC_SELECTIONMARKMIN)
 102
 103 static const WCHAR themeClass[] = { 'T','r','a','c','k','b','a','r',0 };
 104
 105 static inline int
 106 notify_customdraw (const TRACKBAR_INFO *infoPtr, NMCUSTOMDRAW *pnmcd, int stage)
 107 {
 108     pnmcd->dwDrawStage = stage;
 109     return SendMessageW (infoPtr->hwndNotify, WM_NOTIFY,
 110                          pnmcd->hdr.idFrom, (LPARAM)pnmcd);
 111 }
 112
 113 static LRESULT notify_hdr (const TRACKBAR_INFO *infoPtr, INT code, LPNMHDR pnmh)
 114 {
 115     LRESULT result;
 116
 117     TRACE("(code=%d)\n", code);
 118
 119     pnmh->hwndFrom = infoPtr->hwndSelf;
 120     pnmh->idFrom = GetWindowLongPtrW(infoPtr->hwndSelf, GWLP_ID);
 121     pnmh->code = code;
 122     result = SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, pnmh->idFrom, (LPARAM)pnmh);
 123
 124     TRACE("  <= %ld\n", result);
 125
 126     return result;
 127 }
 128
 129 static inline int notify (const TRACKBAR_INFO *infoPtr, INT code)
 130 {
 131     NMHDR nmh;
 132     return notify_hdr(infoPtr, code, &nmh);
 133 }
 134
 135 static BOOL
 136 notify_with_scroll (const TRACKBAR_INFO *infoPtr, UINT code)
 137 {
 138     BOOL bVert = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_VERT;
 139
 140     TRACE("%x\n", code);
 141
 142     return (BOOL) SendMessageW (infoPtr->hwndNotify,
 143                                 bVert ? WM_VSCROLL : WM_HSCROLL,
 144                                 (WPARAM)code, (LPARAM)infoPtr->hwndSelf);
 145 }
 146
 147 static void TRACKBAR_RecalculateTics (TRACKBAR_INFO *infoPtr)
 148 {
 149     int i, tic, nrTics;
 150
 151     if (infoPtr->uTicFreq && infoPtr->lRangeMax >= infoPtr->lRangeMin)
 152         nrTics=(infoPtr->lRangeMax - infoPtr->lRangeMin)/infoPtr->uTicFreq;
 153     else {
 154         nrTics = 0;
 155         Free (infoPtr->tics);
 156         infoPtr->tics = NULL;
 157         infoPtr->uNumTics = 0;
 158         return;
 159     }
 160
 161     if (nrTics != infoPtr->uNumTics) {
 162         infoPtr->tics=ReAlloc (infoPtr->tics,
 163                                         (nrTics+1)*sizeof (DWORD));
 164         if (!infoPtr->tics) {
 165             infoPtr->uNumTics = 0;
 166             notify(infoPtr, NM_OUTOFMEMORY);
 167             return;
 168         }
 169         infoPtr->uNumTics = nrTics;
 170     }
 171
 172     tic = infoPtr->lRangeMin + infoPtr->uTicFreq;
 173     for (i = 0; i < nrTics; i++, tic += infoPtr->uTicFreq)
 174         infoPtr->tics[i] = tic;
 175 }
 176
 177 /* converts from physical (mouse) position to logical position
 178    (in range of trackbar) */
 179
 180 static inline LONG
 181 TRACKBAR_ConvertPlaceToPosition (const TRACKBAR_INFO *infoPtr, int place, int vertical)
 182 {
 183     double range, width, pos, offsetthumb;
 184
 185     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 186     if (vertical) {
 187         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 188         width = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - (offsetthumb * 2) - 1;
 189         pos = (range*(place - infoPtr->rcChannel.top - offsetthumb)) / width;
 190     } else {
 191         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 192         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - (offsetthumb * 2) - 1;
 193         pos = (range*(place - infoPtr->rcChannel.left - offsetthumb)) / width;
 194     }
 195     pos += infoPtr->lRangeMin;
 196     if (pos > infoPtr->lRangeMax)
 197         pos = infoPtr->lRangeMax;
 198     else if (pos < infoPtr->lRangeMin)
 199         pos = infoPtr->lRangeMin;
 200
 201     TRACE("%.2f\n", pos);
 202     return (LONG)(pos + 0.5);
 203 }
 204
 205
 206 /* return: 0> prev, 0 none, >0 next */
 207 static LONG
 208 TRACKBAR_GetAutoPageDirection (const TRACKBAR_INFO *infoPtr, POINT clickPoint)
 209 {
 210     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 211     RECT pageRect;
 212
 213     if (dwStyle & TBS_VERT) {
 214         pageRect.top = infoPtr->rcChannel.top;
 215         pageRect.bottom = infoPtr->rcChannel.bottom;
 216         pageRect.left = infoPtr->rcThumb.left;
 217         pageRect.right = infoPtr->rcThumb.right;
 218     } else {
 219         pageRect.top = infoPtr->rcThumb.top;
 220         pageRect.bottom = infoPtr->rcThumb.bottom;
 221         pageRect.left = infoPtr->rcChannel.left;
 222         pageRect.right = infoPtr->rcChannel.right;
 223     }
 224
 225
 226     if (PtInRect(&pageRect, clickPoint))
 227     {
 228         int clickPlace = (dwStyle & TBS_VERT) ? clickPoint.y : clickPoint.x;
 229
 230         LONG clickPos = TRACKBAR_ConvertPlaceToPosition(infoPtr, clickPlace,
 231                                                         dwStyle & TBS_VERT);
 232         return clickPos - infoPtr->lPos;
 233     }
 234
 235     return 0;
 236 }
 237
 238 static inline void
 239 TRACKBAR_PageDown (TRACKBAR_INFO *infoPtr)
 240 {
 241     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 242
 243     infoPtr->lPos += infoPtr->lPageSize;
 244     if (infoPtr->lPos > infoPtr->lRangeMax)
 245         infoPtr->lPos = infoPtr->lRangeMax;
 246     notify_with_scroll (infoPtr, TB_PAGEDOWN);
 247 }
 248
 249
 250 static inline void
 251 TRACKBAR_PageUp (TRACKBAR_INFO *infoPtr)
 252 {
 253     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 254
 255     infoPtr->lPos -= infoPtr->lPageSize;
 256     if (infoPtr->lPos < infoPtr->lRangeMin)
 257         infoPtr->lPos = infoPtr->lRangeMin;
 258     notify_with_scroll (infoPtr, TB_PAGEUP);
 259 }
 260
 261 static inline void TRACKBAR_LineUp(TRACKBAR_INFO *infoPtr)
 262 {
 263     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 264     infoPtr->lPos -= infoPtr->lLineSize;
 265     if (infoPtr->lPos < infoPtr->lRangeMin)
 266         infoPtr->lPos = infoPtr->lRangeMin;
 267     notify_with_scroll (infoPtr, TB_LINEUP);
 268 }
 269
 270 static inline void TRACKBAR_LineDown(TRACKBAR_INFO *infoPtr)
 271 {
 272     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 273     infoPtr->lPos += infoPtr->lLineSize;
 274     if (infoPtr->lPos > infoPtr->lRangeMax)
 275         infoPtr->lPos = infoPtr->lRangeMax;
 276     notify_with_scroll (infoPtr, TB_LINEDOWN);
 277 }
 278
 279 static void
 280 TRACKBAR_CalcChannel (TRACKBAR_INFO *infoPtr)
 281 {
 282     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 283     INT cyChannel, offsetthumb, offsetedge;
 284     RECT lpRect, *channel = & infoPtr->rcChannel;
 285
 286     GetClientRect (infoPtr->hwndSelf, &lpRect);
 287
 288     offsetthumb = infoPtr->uThumbLen / 4;
 289     offsetedge  = offsetthumb + 3;
 290     cyChannel   = (dwStyle & TBS_ENABLESELRANGE) ? offsetthumb*3 : 4;
 291     if (dwStyle & TBS_VERT) {
 292         channel->top    = lpRect.top + offsetedge;
 293         channel->bottom = lpRect.bottom - offsetedge;
 294         if (dwStyle & TBS_ENABLESELRANGE)
 295             channel->left = lpRect.left + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 296         else
 297             channel->left = lpRect.left + (infoPtr->uThumbLen / 2) - 1;
 298         if (dwStyle & TBS_BOTH) {
 299             if (dwStyle & TBS_NOTICKS)
 300                 channel->left += 1;
 301             else
 302                 channel->left += 9;
 303         }
 304         else if (dwStyle & TBS_TOP) {
 305             if (dwStyle & TBS_NOTICKS)
 306                 channel->left += 2;
 307             else
 308                 channel->left += 10;
 309         }
 310         channel->right = channel->left + cyChannel;
 311     } else {
 312         channel->left = lpRect.left + offsetedge;
 313         channel->right = lpRect.right - offsetedge;
 314         if (dwStyle & TBS_ENABLESELRANGE)
 315             channel->top = lpRect.top + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 316         else
 317             channel->top = lpRect.top + (infoPtr->uThumbLen / 2) - 1;
 318         if (dwStyle & TBS_BOTH) {
 319             if (dwStyle & TBS_NOTICKS)
 320                 channel->top += 1;
 321             else
 322                 channel->top += 9;
 323         }
 324         else if (dwStyle & TBS_TOP) {
 325             if (dwStyle & TBS_NOTICKS)
 326                 channel->top += 2;
 327             else
 328                 channel->top += 10;
 329         }
 330         channel->bottom   = channel->top + cyChannel;
 331     }
 332 }
 333
 334 static void
 335 TRACKBAR_CalcThumb (const TRACKBAR_INFO *infoPtr, LONG lPos, RECT *thumb)
 336 {
 337     int range, width, height, thumbwidth;
 338     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 339     RECT lpRect;
 340
 341     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 342     thumbwidth = (infoPtr->uThumbLen / 2) | 1;
 343
 344     if (!range) range = 1;
 345
 346     GetClientRect(infoPtr->hwndSelf, &lpRect);
 347     if (dwStyle & TBS_VERT)
 348     {
 349         height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - thumbwidth;
 350
 351         if ((dwStyle & (TBS_BOTH | TBS_LEFT)) && !(dwStyle & TBS_NOTICKS))
 352             thumb->left = 10;
 353         else
 354             thumb->left = 2;
 355         thumb->right = thumb->left + infoPtr->uThumbLen;
 356         thumb->top = infoPtr->rcChannel.top +
 357                      (height*(lPos - infoPtr->lRangeMin))/range;
 358         thumb->bottom = thumb->top + thumbwidth;
 359     }
 360     else
 361     {
 362         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - thumbwidth;
 363
 364         thumb->left = infoPtr->rcChannel.left +
 365                       (width*(lPos - infoPtr->lRangeMin))/range;
 366         thumb->right = thumb->left + thumbwidth;
 367         if ((dwStyle & (TBS_BOTH | TBS_TOP)) && !(dwStyle & TBS_NOTICKS))
 368             thumb->top = 10;
 369         else
 370             thumb->top = 2;
 371         thumb->bottom = thumb->top + infoPtr->uThumbLen;
 372     }
 373 }
 374
 375 static inline void
 376 TRACKBAR_UpdateThumb (TRACKBAR_INFO *infoPtr)
 377 {
 378     TRACKBAR_CalcThumb(infoPtr, infoPtr->lPos, &infoPtr->rcThumb);
 379 }
 380
 381 static inline void
 382 TRACKBAR_InvalidateAll (const TRACKBAR_INFO *infoPtr)
 383 {
 384     InvalidateRect(infoPtr->hwndSelf, NULL, FALSE);
 385 }
 386
 387 static void
 388 TRACKBAR_InvalidateThumb (const TRACKBAR_INFO *infoPtr, LONG thumbPos)
 389 {
 390     RECT rcThumb;
 391
 392     TRACKBAR_CalcThumb(infoPtr, thumbPos, &rcThumb);
 393     InflateRect(&rcThumb, 1, 1);
 394     InvalidateRect(infoPtr->hwndSelf, &rcThumb, FALSE);
 395 }
 396
 397 static inline void
 398 TRACKBAR_InvalidateThumbMove (const TRACKBAR_INFO *infoPtr, LONG oldPos, LONG newPos)
 399 {
 400     TRACKBAR_InvalidateThumb (infoPtr, oldPos);
 401     if (newPos != oldPos)
 402         TRACKBAR_InvalidateThumb (infoPtr, newPos);
 403 }
 404
 405 static inline BOOL
 406 TRACKBAR_HasSelection (const TRACKBAR_INFO *infoPtr)
 407 {
 408     return infoPtr->lSelMin != infoPtr->lSelMax;
 409 }
 410
 411 static void
 412 TRACKBAR_CalcSelection (TRACKBAR_INFO *infoPtr)
 413 {
 414     RECT *selection = &infoPtr->rcSelection;
 415     int range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 416     int offsetthumb, height, width;
 417
 418     if (range <= 0) {
 419         SetRectEmpty (selection);
 420     } else {
 421         if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_VERT) {
 422             offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 423             height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - offsetthumb*2;
 424             selection->top    = infoPtr->rcChannel.top + offsetthumb +
 425                 (height*infoPtr->lSelMin)/range;
 426             selection->bottom = infoPtr->rcChannel.top + offsetthumb +
 427                 (height*infoPtr->lSelMax)/range;
 428             selection->left   = infoPtr->rcChannel.left + 3;
 429             selection->right  = infoPtr->rcChannel.right - 3;
 430         } else {
 431             offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 432             width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
 433             selection->left   = infoPtr->rcChannel.left + offsetthumb +
 434                 (width*infoPtr->lSelMin)/range;
 435             selection->right  = infoPtr->rcChannel.left + offsetthumb +
 436                 (width*infoPtr->lSelMax)/range;
 437             selection->top    = infoPtr->rcChannel.top + 3;
 438             selection->bottom = infoPtr->rcChannel.bottom - 3;
 439         }
 440     }
 441
 442     TRACE("selection[%s]\n", wine_dbgstr_rect(selection));
 443 }
 444
 445 static BOOL
 446 TRACKBAR_AutoPage (TRACKBAR_INFO *infoPtr, POINT clickPoint)
 447 {
 448     LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
 449     LONG prevPos = infoPtr->lPos;
 450
 451     TRACE("x=%d, y=%d, dir=%d\n", clickPoint.x, clickPoint.y, dir);
 452
 453     if (dir > 0 && (infoPtr->flags & TB_AUTO_PAGE_RIGHT))
 454         TRACKBAR_PageDown(infoPtr);
 455     else if (dir < 0 && (infoPtr->flags & TB_AUTO_PAGE_LEFT))
 456         TRACKBAR_PageUp(infoPtr);
 457     else return FALSE;
 458
 459     infoPtr->flags |= TB_THUMBPOSCHANGED;
 460     TRACKBAR_InvalidateThumbMove (infoPtr, prevPos, infoPtr->lPos);
 461
 462     return TRUE;
 463 }
 464
 465 /* Trackbar drawing code. I like my spaghetti done milanese.  */
 466
 467 static void
 468 TRACKBAR_DrawChannel (const TRACKBAR_INFO *infoPtr, HDC hdc, DWORD dwStyle)
 469 {
 470     RECT rcChannel = infoPtr->rcChannel;
 471     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 472
 473     if (theme)
 474     {
 475         DrawThemeBackground (theme, hdc,
 476             (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_VERT) ?
 477                 TKP_TRACKVERT : TKP_TRACK, TKS_NORMAL, &rcChannel, 0);
 478     }
 479     else
 480     {
 481         DrawEdge (hdc, &rcChannel, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
 482         if (dwStyle & TBS_ENABLESELRANGE) {              /* fill the channel */
 483             FillRect (hdc, &rcChannel, GetStockObject(WHITE_BRUSH));
 484             if (TRACKBAR_HasSelection(infoPtr))
 485                 FillRect (hdc, &infoPtr->rcSelection, GetSysColorBrush(COLOR_HIGHLIGHT));
 486         }
 487     }
 488 }
 489
 490 static void
 491 TRACKBAR_DrawOneTic (const TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 492 {
 493     int x, y, ox, oy, range, side, indent = 0, len = 3;
 494     int offsetthumb;
 495     RECT rcTics;
 496
 497     if (flags & TBS_VERT) {
 498         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 499         rcTics.left = infoPtr->rcThumb.left - 2;
 500         rcTics.right = infoPtr->rcThumb.right + 2;
 501         rcTics.top    = infoPtr->rcChannel.top + offsetthumb + 1;
 502         rcTics.bottom = infoPtr->rcChannel.bottom - offsetthumb;
 503     } else {
 504         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 505         rcTics.left   = infoPtr->rcChannel.left + offsetthumb + 1;
 506         rcTics.right  = infoPtr->rcChannel.right - offsetthumb;
 507         rcTics.top = infoPtr->rcThumb.top - 2;
 508         rcTics.bottom = infoPtr->rcThumb.bottom + 2;
 509     }
 510
 511     if (flags & (TBS_TOP | TBS_LEFT)) {
 512         x = rcTics.left;
 513         y = rcTics.top;
 514         side = -1;
 515     } else {
 516         x = rcTics.right;
 517         y = rcTics.bottom;
 518         side = 1;
 519     }
 520
 521     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 522     if (range <= 0)
 523       range = 1; /* to avoid division by zero */
 524
 525     if (flags & TIC_SELECTIONMARK) {
 526         indent = (flags & TIC_SELECTIONMARKMIN) ? -1 : 1;
 527     } else if (flags & TIC_EDGE) {
 528         len++;
 529     }
 530
 531     if (flags & TBS_VERT) {
 532         int height = rcTics.bottom - rcTics.top;
 533         y = rcTics.top + (height*(ticPos - infoPtr->lRangeMin))/range;
 534     } else {
 535         int width = rcTics.right - rcTics.left;
 536         x = rcTics.left + (width*(ticPos - infoPtr->lRangeMin))/range;
 537     }
 538
 539     ox = x;
 540     oy = y;
 541     MoveToEx(hdc, x, y, 0);
 542     if (flags & TBS_VERT) x += len * side;
 543     else y += len * side;
 544     LineTo(hdc, x, y);
 545
 546     if (flags & TIC_SELECTIONMARK) {
 547         if (flags & TBS_VERT) {
 548             x -= side;
 549         } else {
 550             y -= side;
 551         }
 552         MoveToEx(hdc, x, y, 0);
 553         if (flags & TBS_VERT) {
 554             y += 2 * indent;
 555         } else {
 556             x += 2 * indent;
 557         }
 558
 559         LineTo(hdc, x, y);
 560         LineTo(hdc, ox, oy);
 561     }
 562 }
 563
 564
 565 static inline void
 566 TRACKBAR_DrawTic (const TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 567 {
 568     if ((flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 569         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags | TBS_LEFT);
 570
 571     if (!(flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 572         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags & ~TBS_LEFT);
 573 }
 574
 575 static void
 576 TRACKBAR_DrawTics (const TRACKBAR_INFO *infoPtr, HDC hdc, DWORD dwStyle)
 577 {
 578     unsigned int i;
 579     int ticFlags = dwStyle & 0x0f;
 580     LOGPEN ticPen = { PS_SOLID, {1, 0}, GetSysColor (COLOR_3DDKSHADOW) };
 581     HPEN hOldPen, hTicPen;
 582     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 583
 584     if (theme)
 585     {
 586         int part = (dwStyle & TBS_VERT) ? TKP_TICSVERT : TKP_TICS;
 587         GetThemeColor (theme, part, TSS_NORMAL, TMT_COLOR, &ticPen.lopnColor);
 588     }
 589     /* create the pen to draw the tics with */
 590     hTicPen = CreatePenIndirect(&ticPen);
 591     hOldPen = hTicPen ? SelectObject(hdc, hTicPen) : 0;
 592
 593     /* actually draw the tics */
 594     for (i=0; i<infoPtr->uNumTics; i++)
 595         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->tics[i], ticFlags);
 596
 597     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMin, ticFlags | TIC_EDGE);
 598     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMax, ticFlags | TIC_EDGE);
 599
 600     if ((dwStyle & TBS_ENABLESELRANGE) && TRACKBAR_HasSelection(infoPtr)) {
 601         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMin,
 602                           ticFlags | TIC_SELECTIONMARKMIN);
 603         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMax,
 604                           ticFlags | TIC_SELECTIONMARKMAX);
 605     }
 606
 607     /* clean up the pen, if we created one */
 608     if (hTicPen) {
 609         SelectObject(hdc, hOldPen);
 610         DeleteObject(hTicPen);
 611     }
 612 }
 613
 614 static void
 615 TRACKBAR_DrawThumb (const TRACKBAR_INFO *infoPtr, HDC hdc, DWORD dwStyle)
 616 {
 617     HBRUSH oldbr;
 618     HPEN  oldpen;
 619     RECT thumb = infoPtr->rcThumb;
 620     int BlackUntil = 3;
 621     int PointCount = 6;
 622     POINT points[6];
 623     int fillClr;
 624     int PointDepth;
 625     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
 626
 627     if (theme)
 628     {
 629         int partId;
 630         int stateId;
 631         if (dwStyle & TBS_BOTH)
 632             partId = (dwStyle & TBS_VERT) ? TKP_THUMBVERT : TKP_THUMB;
 633         else if (dwStyle & TBS_LEFT)
 634             partId = (dwStyle & TBS_VERT) ? TKP_THUMBLEFT : TKP_THUMBTOP;
 635         else
 636             partId = (dwStyle & TBS_VERT) ? TKP_THUMBRIGHT : TKP_THUMBBOTTOM;
 637
 638         if (dwStyle & WS_DISABLED)
 639             stateId = TUS_DISABLED;
 640         else if (infoPtr->flags & TB_DRAG_MODE)
 641             stateId = TUS_PRESSED;
 642         else if (infoPtr->flags & TB_THUMB_HOT)
 643             stateId = TUS_HOT;
 644         else
 645             stateId = TUS_NORMAL;
 646
 647         DrawThemeBackground (theme, hdc, partId, stateId, &thumb, 0);
 648
 649         return;
 650     }
 651
 652     fillClr = infoPtr->flags & TB_DRAG_MODE ? COLOR_BTNHILIGHT : COLOR_BTNFACE;
 653     oldbr = SelectObject (hdc, GetSysColorBrush(fillClr));
 654     SetPolyFillMode (hdc, WINDING);
 655
 656     if (dwStyle & TBS_BOTH)
 657     {
 658        points[0].x=thumb.right;
 659        points[0].y=thumb.top;
 660        points[1].x=thumb.right;
 661        points[1].y=thumb.bottom;
 662        points[2].x=thumb.left;
 663        points[2].y=thumb.bottom;
 664        points[3].x=thumb.left;
 665        points[3].y=thumb.top;
 666        points[4].x=points[0].x;
 667        points[4].y=points[0].y;
 668        PointCount = 5;
 669        BlackUntil = 3;
 670     }
 671     else
 672     {
 673         if (dwStyle & TBS_VERT)
 674         {
 675           PointDepth = (thumb.bottom - thumb.top) / 2;
 676           if (dwStyle & TBS_LEFT)
 677           {
 678             points[0].x=thumb.right;
 679             points[0].y=thumb.top;
 680             points[1].x=thumb.right;
 681             points[1].y=thumb.bottom;
 682             points[2].x=thumb.left + PointDepth;
 683             points[2].y=thumb.bottom;
 684             points[3].x=thumb.left;
 685             points[3].y=(thumb.bottom - thumb.top) / 2 + thumb.top + 1;
 686             points[4].x=thumb.left + PointDepth;
 687             points[4].y=thumb.top;
 688             points[5].x=points[0].x;
 689             points[5].y=points[0].y;
 690             BlackUntil = 4;
 691           }
 692           else
 693           {
 694             points[0].x=thumb.right;
 695             points[0].y=(thumb.bottom - thumb.top) / 2 + thumb.top + 1;
 696             points[1].x=thumb.right - PointDepth;
 697             points[1].y=thumb.bottom;
 698             points[2].x=thumb.left;
 699             points[2].y=thumb.bottom;
 700             points[3].x=thumb.left;
 701             points[3].y=thumb.top;
 702             points[4].x=thumb.right - PointDepth;
 703             points[4].y=thumb.top;
 704             points[5].x=points[0].x;
 705             points[5].y=points[0].y;
 706           }
 707         }
 708         else
 709         {
 710           PointDepth = (thumb.right - thumb.left) / 2;
 711           if (dwStyle & TBS_TOP)
 712           {
 713             points[0].x=(thumb.right - thumb.left) / 2 + thumb.left + 1;
 714             points[0].y=thumb.top;
 715             points[1].x=thumb.right;
 716             points[1].y=thumb.top + PointDepth;
 717             points[2].x=thumb.right;
 718             points[2].y=thumb.bottom;
 719             points[3].x=thumb.left;
 720             points[3].y=thumb.bottom;
 721             points[4].x=thumb.left;
 722             points[4].y=thumb.top + PointDepth;
 723             points[5].x=points[0].x;
 724             points[5].y=points[0].y;
 725             BlackUntil = 4;
 726           }
 727           else
 728           {
 729             points[0].x=thumb.right;
 730             points[0].y=thumb.top;
 731             points[1].x=thumb.right;
 732             points[1].y=thumb.bottom - PointDepth;
 733             points[2].x=(thumb.right - thumb.left) / 2 + thumb.left + 1;
 734             points[2].y=thumb.bottom;
 735             points[3].x=thumb.left;
 736             points[3].y=thumb.bottom - PointDepth;
 737             points[4].x=thumb.left;
 738             points[4].y=thumb.top;
 739             points[5].x=points[0].x;
 740             points[5].y=points[0].y;
 741           }
 742         }
 743
 744     }
 745
 746     /* Draw the thumb now */
 747     Polygon (hdc, points, PointCount);
 748     oldpen = SelectObject(hdc, GetStockObject(BLACK_PEN));
 749     Polyline(hdc,points, BlackUntil);
 750     SelectObject(hdc, GetStockObject(WHITE_PEN));
 751     Polyline(hdc, &points[BlackUntil-1], PointCount+1-BlackUntil);
 752     SelectObject(hdc, oldpen);
 753     SelectObject(hdc, oldbr);
 754 }
 755
 756
 757 static inline void
 758 TRACKBAR_ActivateToolTip (const TRACKBAR_INFO *infoPtr, BOOL fShow)
 759 {
 760     TTTOOLINFOW ti;
 761
 762     if (!infoPtr->hwndToolTip) return;
 763
 764     ZeroMemory(&ti, sizeof(ti));
 765     ti.cbSize = sizeof(ti);
 766     ti.hwnd   = infoPtr->hwndSelf;
 767
 768     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKACTIVATE, fShow, (LPARAM)&ti);
 769 }
 770
 771
 772 static void
 773 TRACKBAR_UpdateToolTip (const TRACKBAR_INFO *infoPtr)
 774 {
 775     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 776     WCHAR buf[80];
 777     static const WCHAR fmt[] = { '%', 'l', 'd', 0 };
 778     TTTOOLINFOW ti;
 779     POINT pt;
 780     RECT rcClient;
 781     LRESULT size;
 782
 783     if (!infoPtr->hwndToolTip) return;
 784
 785     ZeroMemory(&ti, sizeof(ti));
 786     ti.cbSize = sizeof(ti);
 787     ti.hwnd   = infoPtr->hwndSelf;
 788     ti.uFlags = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
 789
 790     wsprintfW (buf, fmt, infoPtr->lPos);
 791     ti.lpszText = buf;
 792     SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 793
 794     GetClientRect (infoPtr->hwndSelf, &rcClient);
 795     size = SendMessageW (infoPtr->hwndToolTip, TTM_GETBUBBLESIZE, 0, (LPARAM)&ti);
 796     if (dwStyle & TBS_VERT) {
 797         if (infoPtr->fLocation == TBTS_LEFT)
 798             pt.x = 0 - LOWORD(size) - TOOLTIP_OFFSET;
 799         else
 800             pt.x = rcClient.right + TOOLTIP_OFFSET;
 801         pt.y = (infoPtr->rcThumb.top + infoPtr->rcThumb.bottom - HIWORD(size))/2;
 802     } else {
 803         if (infoPtr->fLocation == TBTS_TOP)
 804             pt.y = 0 - HIWORD(size) - TOOLTIP_OFFSET;
 805         else
 806             pt.y = rcClient.bottom + TOOLTIP_OFFSET;
 807         pt.x = (infoPtr->rcThumb.left + infoPtr->rcThumb.right - LOWORD(size))/2;
 808     }
 809     ClientToScreen(infoPtr->hwndSelf, &pt);
 810
 811     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKPOSITION,
 812                   0, MAKELPARAM(pt.x, pt.y));
 813 }
 814
 815
 816 static void
 817 TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdcDst)
 818 {
 819     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 820     RECT rcClient;
 821     HDC hdc;
 822     HBITMAP hOldBmp = 0, hOffScreenBmp = 0;
 823     NMCUSTOMDRAW nmcd;
 824     int gcdrf, icdrf;
 825
 826     if (infoPtr->flags & TB_THUMBCHANGED) {
 827         TRACKBAR_UpdateThumb (infoPtr);
 828         if (infoPtr->flags & TB_THUMBSIZECHANGED)
 829             TRACKBAR_CalcChannel (infoPtr);
 830     }
 831     if (infoPtr->flags & TB_SELECTIONCHANGED)
 832         TRACKBAR_CalcSelection (infoPtr);
 833
 834     if (infoPtr->flags & TB_DRAG_MODE)
 835         TRACKBAR_UpdateToolTip (infoPtr);
 836
 837     infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
 838
 839     GetClientRect (infoPtr->hwndSelf, &rcClient);
 840
 841     /* try to render offscreen, if we fail, carrry onscreen */
 842     hdc = CreateCompatibleDC(hdcDst);
 843     if (hdc) {
 844         hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
 845         if (hOffScreenBmp) {
 846             hOldBmp = SelectObject(hdc, hOffScreenBmp);
 847         } else {
 848             DeleteObject(hdc);
 849             hdc = hdcDst;
 850         }
 851     } else {
 852         hdc = hdcDst;
 853     }
 854
 855     ZeroMemory(&nmcd, sizeof(nmcd));
 856     nmcd.hdr.hwndFrom = infoPtr->hwndSelf;
 857     nmcd.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
 858     nmcd.hdr.code = NM_CUSTOMDRAW;
 859     nmcd.hdc = hdc;
 860
 861     /* start the paint cycle */
 862     nmcd.rc = rcClient;
 863     gcdrf = notify_customdraw(infoPtr, &nmcd, CDDS_PREPAINT);
 864     if (gcdrf & CDRF_SKIPDEFAULT) goto cleanup;
 865
 866     /* Erase background */
 867     if (gcdrf == CDRF_DODEFAULT ||
 868         notify_customdraw(infoPtr, &nmcd, CDDS_PREERASE) != CDRF_SKIPDEFAULT) {
 869         if (GetWindowTheme (infoPtr->hwndSelf)) {
 870             DrawThemeParentBackground (infoPtr->hwndSelf, hdc, 0);
 871         }
 872         else
 873             FillRect (hdc, &rcClient, GetSysColorBrush(COLOR_BTNFACE));
 874         if (gcdrf != CDRF_DODEFAULT)
 875             notify_customdraw(infoPtr, &nmcd, CDDS_POSTERASE);
 876     }
 877
 878     /* draw channel */
 879     if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 880         nmcd.dwItemSpec = TBCD_CHANNEL;
 881         nmcd.uItemState = CDIS_DEFAULT;
 882         nmcd.rc = infoPtr->rcChannel;
 883         icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 884     } else icdrf = CDRF_DODEFAULT;
 885     if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 886         TRACKBAR_DrawChannel (infoPtr, hdc, dwStyle);
 887         if (icdrf & CDRF_NOTIFYPOSTPAINT)
 888             notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 889     }
 890
 891
 892     /* draw tics */
 893     if (!(dwStyle & TBS_NOTICKS)) {
 894         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 895             nmcd.dwItemSpec = TBCD_TICS;
 896             nmcd.uItemState = CDIS_DEFAULT;
 897             nmcd.rc = rcClient;
 898             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 899         } else icdrf = CDRF_DODEFAULT;
 900         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 901             TRACKBAR_DrawTics (infoPtr, hdc, dwStyle);
 902             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 903                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 904         }
 905     }
 906
 907     /* draw thumb */
 908     if (!(dwStyle & TBS_NOTHUMB)) {
 909         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 910             nmcd.dwItemSpec = TBCD_THUMB;
 911             nmcd.uItemState = infoPtr->flags & TB_DRAG_MODE ? CDIS_HOT : CDIS_DEFAULT;
 912             nmcd.rc = infoPtr->rcThumb;
 913             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 914         } else icdrf = CDRF_DODEFAULT;
 915         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 916             TRACKBAR_DrawThumb(infoPtr, hdc, dwStyle);
 917             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 918                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 919         }
 920     }
 921
 922     /* draw focus rectangle */
 923     if (infoPtr->bFocussed) {
 924         DrawFocusRect(hdc, &rcClient);
 925     }
 926
 927     /* finish up the painting */
 928     if (gcdrf & CDRF_NOTIFYPOSTPAINT)
 929         notify_customdraw(infoPtr, &nmcd, CDDS_POSTPAINT);
 930
 931 cleanup:
 932     /* cleanup, if we rendered offscreen */
 933     if (hdc != hdcDst) {
 934         BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
 935         SelectObject(hdc, hOldBmp);
 936         DeleteObject(hOffScreenBmp);
 937         DeleteObject(hdc);
 938     }
 939 }
 940
 941
 942 static void
 943 TRACKBAR_AlignBuddies (const TRACKBAR_INFO *infoPtr)
 944 {
 945     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 946     HWND hwndParent = GetParent (infoPtr->hwndSelf);
 947     RECT rcSelf, rcBuddy;
 948     INT x, y;
 949
 950     GetWindowRect (infoPtr->hwndSelf, &rcSelf);
 951     MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcSelf, 2);
 952
 953     /* align buddy left or above */
 954     if (infoPtr->hwndBuddyLA) {
 955         GetWindowRect (infoPtr->hwndBuddyLA, &rcBuddy);
 956         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
 957
 958         if (dwStyle & TBS_VERT) {
 959             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
 960                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
 961             y = rcSelf.top - (rcBuddy.bottom - rcBuddy.top);
 962         }
 963         else {
 964             x = rcSelf.left - (rcBuddy.right - rcBuddy.left);
 965             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
 966                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
 967         }
 968
 969         SetWindowPos (infoPtr->hwndBuddyLA, 0, x, y, 0, 0,
 970                       SWP_NOZORDER | SWP_NOSIZE);
 971     }
 972
 973
 974     /* align buddy right or below */
 975     if (infoPtr->hwndBuddyRB) {
 976         GetWindowRect (infoPtr->hwndBuddyRB, &rcBuddy);
 977         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
 978
 979         if (dwStyle & TBS_VERT) {
 980             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
 981                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
 982             y = rcSelf.bottom;
 983         }
 984         else {
 985             x = rcSelf.right;
 986             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
 987                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
 988         }
 989         SetWindowPos (infoPtr->hwndBuddyRB, 0, x, y, 0, 0,
 990                       SWP_NOZORDER | SWP_NOSIZE);
 991     }
 992 }
 993
 994
 995 static LRESULT
 996 TRACKBAR_ClearSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
 997 {
 998     infoPtr->lSelMin = 0;
 999     infoPtr->lSelMax = 0;
1000     infoPtr->flags |= TB_SELECTIONCHANGED;
1001
1002     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1003
1004     return 0;
1005 }
1006
1007
1008 static LRESULT
1009 TRACKBAR_ClearTics (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1010 {
1011     if (infoPtr->tics) {
1012         Free (infoPtr->tics);
1013         infoPtr->tics = NULL;
1014         infoPtr->uNumTics = 0;
1015     }
1016
1017     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1018
1019     return 0;
1020 }
1021
1022
1023 static inline LRESULT
1024 TRACKBAR_GetChannelRect (const TRACKBAR_INFO *infoPtr, LPRECT lprc)
1025 {
1026     if (lprc == NULL) return 0;
1027
1028     lprc->left   = infoPtr->rcChannel.left;
1029     lprc->right  = infoPtr->rcChannel.right;
1030     lprc->bottom = infoPtr->rcChannel.bottom;
1031     lprc->top    = infoPtr->rcChannel.top;
1032
1033     return 0;
1034 }
1035
1036
1037 static inline LONG
1038 TRACKBAR_GetNumTics (const TRACKBAR_INFO *infoPtr)
1039 {
1040     if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_NOTICKS)
1041         return 0;
1042
1043     if(infoPtr->uNumTics == 0)
1044         return 2;
1045     else
1046         return infoPtr->uNumTics + 1;
1047 }
1048
1049
1050 static int comp_tics (const void *ap, const void *bp)
1051 {
1052     const DWORD a = *(const DWORD *)ap;
1053     const DWORD b = *(const DWORD *)bp;
1054
1055     TRACE("(a=%d, b=%d)\n", a, b);
1056     if (a < b) return -1;
1057     if (a > b) return 1;
1058     return 0;
1059 }
1060
1061
1062 static inline LONG
1063 TRACKBAR_GetTic (const TRACKBAR_INFO *infoPtr, INT iTic)
1064 {
1065     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1066         return -1;
1067
1068     qsort(infoPtr->tics, infoPtr->uNumTics, sizeof(DWORD), comp_tics);
1069     return infoPtr->tics[iTic];
1070 }
1071
1072
1073 static inline LONG
1074 TRACKBAR_GetTicPos (const TRACKBAR_INFO *infoPtr, INT iTic)
1075 {
1076     LONG range, width, pos, tic;
1077     int offsetthumb;
1078
1079     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1080         return -1;
1081
1082     tic   = TRACKBAR_GetTic (infoPtr, iTic);
1083     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
1084     if (range <= 0) range = 1;
1085     offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
1086     width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
1087     pos   = infoPtr->rcChannel.left + offsetthumb + (width * tic) / range;
1088
1089     return pos;
1090 }
1091
1092
1093 static HWND
1094 TRACKBAR_SetBuddy (TRACKBAR_INFO *infoPtr, BOOL fLocation, HWND hwndBuddy)
1095 {
1096     HWND hwndTemp;
1097
1098     if (fLocation) {
1099         /* buddy is left or above */
1100         hwndTemp = infoPtr->hwndBuddyLA;
1101         infoPtr->hwndBuddyLA = hwndBuddy;
1102     }
1103     else {
1104         /* buddy is right or below */
1105         hwndTemp = infoPtr->hwndBuddyRB;
1106         infoPtr->hwndBuddyRB = hwndBuddy;
1107     }
1108
1109     TRACKBAR_AlignBuddies (infoPtr);
1110
1111     return hwndTemp;
1112 }
1113
1114
1115 static inline LONG
1116 TRACKBAR_SetLineSize (TRACKBAR_INFO *infoPtr, LONG lLineSize)
1117 {
1118     LONG lTemp = infoPtr->lLineSize;
1119
1120     infoPtr->lLineSize = lLineSize;
1121
1122     return lTemp;
1123 }
1124
1125
1126 static inline LONG
1127 TRACKBAR_SetPageSize (TRACKBAR_INFO *infoPtr, LONG lPageSize)
1128 {
1129     LONG lTemp = infoPtr->lPageSize;
1130
1131     infoPtr->lPageSize = lPageSize;
1132
1133     return lTemp;
1134 }
1135
1136
1137 static inline LRESULT
1138 TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
1139 {
1140     LONG oldPos = infoPtr->lPos;
1141     infoPtr->lPos = lPosition;
1142
1143     if (infoPtr->lPos < infoPtr->lRangeMin)
1144         infoPtr->lPos = infoPtr->lRangeMin;
1145
1146     if (infoPtr->lPos > infoPtr->lRangeMax)
1147         infoPtr->lPos = infoPtr->lRangeMax;
1148     infoPtr->flags |= TB_THUMBPOSCHANGED;
1149
1150     if (fPosition) TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
1151
1152     return 0;
1153 }
1154
1155
1156 static inline LRESULT
1157 TRACKBAR_SetRange (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lRange)
1158 {
1159     infoPtr->lRangeMin = (SHORT)LOWORD(lRange);
1160     infoPtr->lRangeMax = (SHORT)HIWORD(lRange);
1161
1162     if (infoPtr->lPos < infoPtr->lRangeMin) {
1163         infoPtr->lPos = infoPtr->lRangeMin;
1164         infoPtr->flags |= TB_THUMBPOSCHANGED;
1165     }
1166
1167     if (infoPtr->lPos > infoPtr->lRangeMax) {
1168         infoPtr->lPos = infoPtr->lRangeMax;
1169         infoPtr->flags |= TB_THUMBPOSCHANGED;
1170     }
1171
1172     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1173     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1174
1175     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1176
1177     return 0;
1178 }
1179
1180
1181 static inline LRESULT
1182 TRACKBAR_SetRangeMax (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lMax)
1183 {
1184     infoPtr->lRangeMax = lMax;
1185     if (infoPtr->lPos > infoPtr->lRangeMax) {
1186         infoPtr->lPos = infoPtr->lRangeMax;
1187         infoPtr->flags |= TB_THUMBPOSCHANGED;
1188     }
1189
1190     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1191     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1192
1193     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1194
1195     return 0;
1196 }
1197
1198
1199 static inline LRESULT
1200 TRACKBAR_SetRangeMin (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lMin)
1201 {
1202     infoPtr->lRangeMin = lMin;
1203     if (infoPtr->lPos < infoPtr->lRangeMin) {
1204         infoPtr->lPos = infoPtr->lRangeMin;
1205         infoPtr->flags |= TB_THUMBPOSCHANGED;
1206     }
1207
1208     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1209     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1210
1211     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1212
1213     return 0;
1214 }
1215
1216
1217 static inline LRESULT
1218 TRACKBAR_SetSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lSel)
1219 {
1220     if (!(GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_ENABLESELRANGE)){
1221         infoPtr->lSelMin = 0;
1222         infoPtr->lSelMax = 0;
1223         return 0;
1224     }
1225
1226     infoPtr->lSelMin = (SHORT)LOWORD(lSel);
1227     infoPtr->lSelMax = (SHORT)HIWORD(lSel);
1228     infoPtr->flags |= TB_SELECTIONCHANGED;
1229
1230     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1231         infoPtr->lSelMin = infoPtr->lRangeMin;
1232     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1233         infoPtr->lSelMax = infoPtr->lRangeMax;
1234
1235     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1236
1237     return 0;
1238 }
1239
1240
1241 static inline LRESULT
1242 TRACKBAR_SetSelEnd (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lEnd)
1243 {
1244     if (!(GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_ENABLESELRANGE)){
1245         infoPtr->lSelMax = 0;
1246         return 0;
1247     }
1248
1249     infoPtr->lSelMax = lEnd;
1250     infoPtr->flags |= TB_SELECTIONCHANGED;
1251
1252     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1253         infoPtr->lSelMax = infoPtr->lRangeMax;
1254
1255     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1256
1257     return 0;
1258 }
1259
1260
1261 static inline LRESULT
1262 TRACKBAR_SetSelStart (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lStart)
1263 {
1264     if (!(GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_ENABLESELRANGE)){
1265         infoPtr->lSelMin = 0;
1266         return 0;
1267     }
1268
1269     infoPtr->lSelMin = lStart;
1270     infoPtr->flags  |=TB_SELECTIONCHANGED;
1271
1272     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1273         infoPtr->lSelMin = infoPtr->lRangeMin;
1274
1275     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1276
1277     return 0;
1278 }
1279
1280
1281 static inline LRESULT
1282 TRACKBAR_SetThumbLength (TRACKBAR_INFO *infoPtr, UINT iLength)
1283 {
1284     if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_FIXEDLENGTH) {
1285         infoPtr->uThumbLen = iLength;
1286         infoPtr->flags |= TB_THUMBSIZECHANGED;
1287         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1288     }
1289
1290     return 0;
1291 }
1292
1293
1294 static inline LRESULT
1295 TRACKBAR_SetTic (TRACKBAR_INFO *infoPtr, LONG lPos)
1296 {
1297     if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_AUTOTICKS)
1298         return FALSE;
1299
1300     if ((lPos < infoPtr->lRangeMin) || (lPos> infoPtr->lRangeMax))
1301         return FALSE;
1302
1303     TRACE("lPos=%d\n", lPos);
1304
1305     infoPtr->uNumTics++;
1306     infoPtr->tics=ReAlloc( infoPtr->tics,
1307                                     (infoPtr->uNumTics)*sizeof (DWORD));
1308     if (!infoPtr->tics) {
1309         infoPtr->uNumTics = 0;
1310         notify(infoPtr, NM_OUTOFMEMORY);
1311         return FALSE;
1312     }
1313     infoPtr->tics[infoPtr->uNumTics-1] = lPos;
1314
1315     TRACKBAR_InvalidateAll(infoPtr);
1316
1317     return TRUE;
1318 }
1319
1320
1321 static inline LRESULT
1322 TRACKBAR_SetTicFreq (TRACKBAR_INFO *infoPtr, WORD wFreq)
1323 {
1324     if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_AUTOTICKS) {
1325         infoPtr->uTicFreq = wFreq;
1326         TRACKBAR_RecalculateTics (infoPtr);
1327         TRACKBAR_InvalidateAll(infoPtr);
1328     }
1329
1330     return 0;
1331 }
1332
1333
1334 static inline INT
1335 TRACKBAR_SetTipSide (TRACKBAR_INFO *infoPtr, INT fLocation)
1336 {
1337     INT fTemp = infoPtr->fLocation;
1338
1339     infoPtr->fLocation = fLocation;
1340
1341     return fTemp;
1342 }
1343
1344
1345 static inline LRESULT
1346 TRACKBAR_SetToolTips (TRACKBAR_INFO *infoPtr, HWND hwndTT)
1347 {
1348     infoPtr->hwndToolTip = hwndTT;
1349
1350     return 0;
1351 }
1352
1353
1354 static inline BOOL
1355 TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
1356 {
1357     BOOL bTemp = infoPtr->bUnicode;
1358
1359     infoPtr->bUnicode = fUnicode;
1360
1361     return bTemp;
1362 }
1363
1364
1365 static LRESULT
1366 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
1367 {
1368     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
1369     RECT rect;
1370     int clientWidth, clientMetric;
1371
1372     /* initial thumb length */
1373     clientMetric = (dwStyle & TBS_ENABLESELRANGE) ? 23 : 21;
1374     GetClientRect(infoPtr->hwndSelf,&rect);
1375     if (dwStyle & TBS_VERT) {
1376         clientWidth = rect.right - rect.left;
1377     } else {
1378         clientWidth = rect.bottom - rect.top;
1379     }
1380     if (clientWidth >= clientMetric)
1381         infoPtr->uThumbLen = clientMetric;
1382     else
1383         infoPtr->uThumbLen = clientWidth > 9 ? clientWidth - 6 : 4;
1384
1385     TRACKBAR_CalcChannel (infoPtr);
1386     TRACKBAR_UpdateThumb (infoPtr);
1387     infoPtr->flags &= ~TB_SELECTIONCHANGED;
1388
1389     return 0;
1390 }
1391
1392
1393 static LRESULT
1394 TRACKBAR_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
1395 {
1396     TRACKBAR_INFO *infoPtr;
1397     DWORD dwStyle;
1398
1399     infoPtr = (TRACKBAR_INFO *)Alloc (sizeof(TRACKBAR_INFO));
1400     if (!infoPtr) return -1;
1401     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1402
1403     /* set default values */
1404     infoPtr->hwndSelf  = hwnd;
1405     infoPtr->lRangeMin = 0;
1406     infoPtr->lRangeMax = 100;
1407     infoPtr->lLineSize = 1;
1408     infoPtr->lPageSize = 20;
1409     infoPtr->lSelMin   = 0;
1410     infoPtr->lSelMax   = 0;
1411     infoPtr->lPos      = 0;
1412     infoPtr->fLocation = -1;
1413     infoPtr->uNumTics  = 0;    /* start and end tic are not included in count*/
1414     infoPtr->uTicFreq  = 1;
1415     infoPtr->tics      = NULL;
1416     infoPtr->hwndNotify= lpcs->hwndParent;
1417
1418     TRACKBAR_InitializeThumb (infoPtr);
1419
1420     dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
1421
1422     /* Create tooltip control */
1423     if (dwStyle & TBS_TOOLTIPS) {
1424
1425         infoPtr->hwndToolTip =
1426             CreateWindowExW (0, TOOLTIPS_CLASSW, NULL, WS_POPUP,
1427                              CW_USEDEFAULT, CW_USEDEFAULT,
1428                              CW_USEDEFAULT, CW_USEDEFAULT,
1429                              hwnd, 0, 0, 0);
1430
1431         if (infoPtr->hwndToolTip) {
1432             TTTOOLINFOW ti;
1433             ZeroMemory (&ti, sizeof(ti));
1434             ti.cbSize   = sizeof(ti);
1435             ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
1436             ti.hwnd     = hwnd;
1437
1438             SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
1439          }
1440     }
1441
1442     OpenThemeData (hwnd, themeClass);
1443
1444     return 0;
1445 }
1446
1447
1448 static LRESULT
1449 TRACKBAR_Destroy (TRACKBAR_INFO *infoPtr)
1450 {
1451     /* delete tooltip control */
1452     if (infoPtr->hwndToolTip)
1453         DestroyWindow (infoPtr->hwndToolTip);
1454
1455     Free (infoPtr);
1456     SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
1457     CloseThemeData (GetWindowTheme (infoPtr->hwndSelf));
1458     return 0;
1459 }
1460
1461
1462 static LRESULT
1463 TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr, HWND hwndGetFocus)
1464 {
1465     TRACE("\n");
1466     infoPtr->bFocussed = FALSE;
1467     TRACKBAR_InvalidateAll(infoPtr);
1468
1469     return 0;
1470 }
1471
1472 static LRESULT
1473 TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
1474 {
1475     POINT clickPoint;
1476
1477     clickPoint.x = x;
1478     clickPoint.y = y;
1479
1480     SetFocus(infoPtr->hwndSelf);
1481
1482     if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
1483         infoPtr->flags |= TB_DRAG_MODE;
1484         SetCapture (infoPtr->hwndSelf);
1485         TRACKBAR_UpdateToolTip (infoPtr);
1486         TRACKBAR_ActivateToolTip (infoPtr, TRUE);
1487         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1488     } else {
1489         LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
1490         if (dir == 0) return 0;
1491         infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
1492         TRACKBAR_AutoPage (infoPtr, clickPoint);
1493         SetCapture (infoPtr->hwndSelf);
1494         SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
1495     }
1496
1497     return 0;
1498 }
1499
1500
1501 static LRESULT
1502 TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
1503 {
1504     if (infoPtr->flags & TB_DRAG_MODE) {
1505         notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
1506         notify_with_scroll (infoPtr, TB_ENDTRACK);
1507         infoPtr->flags &= ~TB_DRAG_MODE;
1508         ReleaseCapture ();
1509         notify(infoPtr, NM_RELEASEDCAPTURE);
1510         TRACKBAR_ActivateToolTip(infoPtr, FALSE);
1511         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1512     }
1513     if (infoPtr->flags & TB_AUTO_PAGE) {
1514         KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
1515         infoPtr->flags &= ~TB_AUTO_PAGE;
1516         notify_with_scroll (infoPtr, TB_ENDTRACK);
1517         ReleaseCapture ();
1518         notify(infoPtr, NM_RELEASEDCAPTURE);
1519     }
1520
1521     return 0;
1522 }
1523
1524
1525 static LRESULT
1526 TRACKBAR_CaptureChanged (const TRACKBAR_INFO *infoPtr)
1527 {
1528     notify_with_scroll (infoPtr, TB_ENDTRACK);
1529     return 0;
1530 }
1531
1532
1533 static LRESULT
1534 TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
1535 {
1536     if (hdc) {
1537         TRACKBAR_Refresh(infoPtr, hdc);
1538     } else {
1539         PAINTSTRUCT ps;
1540         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
1541         TRACKBAR_Refresh (infoPtr, hdc);
1542         EndPaint (infoPtr->hwndSelf, &ps);
1543     }
1544
1545     return 0;
1546 }
1547
1548
1549 static LRESULT
1550 TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr, HWND hwndLoseFocus)
1551 {
1552     TRACE("\n");
1553     infoPtr->bFocussed = TRUE;
1554     TRACKBAR_InvalidateAll(infoPtr);
1555
1556     return 0;
1557 }
1558
1559
1560 static LRESULT
1561 TRACKBAR_Size (TRACKBAR_INFO *infoPtr, DWORD fwSizeType, INT nWidth, INT nHeight)
1562 {
1563     TRACKBAR_InitializeThumb (infoPtr);
1564     TRACKBAR_AlignBuddies (infoPtr);
1565
1566     return 0;
1567 }
1568
1569
1570 static LRESULT
1571 TRACKBAR_Timer (TRACKBAR_INFO *infoPtr, INT wTimerID, const TIMERPROC *tmrpc)
1572 {
1573     if (infoPtr->flags & TB_AUTO_PAGE) {
1574         POINT pt;
1575         if (GetCursorPos(&pt))
1576             if (ScreenToClient(infoPtr->hwndSelf, &pt))
1577                 TRACKBAR_AutoPage(infoPtr, pt);
1578     }
1579     return 0;
1580 }
1581
1582
1583 /* update theme after a WM_THEMECHANGED message */
1584 static LRESULT theme_changed (const TRACKBAR_INFO* infoPtr)
1585 {
1586     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
1587     CloseThemeData (theme);
1588     theme = OpenThemeData (infoPtr->hwndSelf, themeClass);
1589     return 0;
1590 }
1591
1592
1593 static LRESULT
1594 TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
1595 {
1596     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
1597     INT clickPlace = (dwStyle & TBS_VERT) ? y : x;
1598     LONG dragPos, oldPos = infoPtr->lPos;
1599
1600     TRACE("(x=%d. y=%d)\n", x, y);
1601
1602     if (infoPtr->flags & TB_AUTO_PAGE) {
1603         POINT pt;
1604         pt.x = x;
1605         pt.y = y;
1606         TRACKBAR_AutoPage (infoPtr, pt);
1607         return TRUE;
1608     }
1609
1610     if (!(infoPtr->flags & TB_DRAG_MODE))
1611     {
1612         if (GetWindowTheme (infoPtr->hwndSelf))
1613         {
1614             DWORD oldFlags = infoPtr->flags;
1615             POINT pt;
1616             pt.x = x;
1617             pt.y = y;
1618             if (PtInRect (&infoPtr->rcThumb, pt))
1619             {
1620                 TRACKMOUSEEVENT tme;
1621                 tme.cbSize = sizeof( tme );
1622                 tme.dwFlags = TME_LEAVE;
1623                 tme.hwndTrack = infoPtr->hwndSelf;
1624                 TrackMouseEvent( &tme );
1625                 infoPtr->flags |= TB_THUMB_HOT;
1626             }
1627             else
1628             {
1629                 TRACKMOUSEEVENT tme;
1630                 tme.cbSize = sizeof( tme );
1631                 tme.dwFlags = TME_CANCEL;
1632                 tme.hwndTrack = infoPtr->hwndSelf;
1633                 TrackMouseEvent( &tme );
1634                 infoPtr->flags &= ~TB_THUMB_HOT;
1635             }
1636             if (oldFlags != infoPtr->flags) InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1637         }
1638         return TRUE;
1639     }
1640
1641     dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace,
1642                                                dwStyle & TBS_VERT);
1643     if (dragPos == oldPos) return TRUE;
1644
1645     infoPtr->lPos = dragPos;
1646
1647     infoPtr->flags |= TB_THUMBPOSCHANGED;
1648     notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));
1649
1650
1651     TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
1652     UpdateWindow (infoPtr->hwndSelf);
1653
1654     return TRUE;
1655 }
1656
1657 static BOOL
1658 TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey, DWORD lKeyData)
1659 {
1660     DWORD style = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
1661     BOOL downIsLeft = style & TBS_DOWNISLEFT;
1662     BOOL vert = style & TBS_VERT;
1663     LONG pos = infoPtr->lPos;
1664
1665     TRACE("%x\n", nVirtKey);
1666
1667     switch (nVirtKey) {
1668     case VK_UP:
1669         if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1670         else TRACKBAR_LineUp(infoPtr);
1671         break;
1672     case VK_LEFT:
1673         if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1674         else TRACKBAR_LineUp(infoPtr);
1675         break;
1676     case VK_DOWN:
1677         if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1678         else TRACKBAR_LineDown(infoPtr);
1679         break;
1680     case VK_RIGHT:
1681         if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1682         else TRACKBAR_LineDown(infoPtr);
1683         break;
1684     case VK_NEXT:
1685         if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
1686         else TRACKBAR_PageDown(infoPtr);
1687         break;
1688     case VK_PRIOR:
1689         if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
1690         else TRACKBAR_PageUp(infoPtr);
1691         break;
1692     case VK_HOME:
1693         if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
1694         infoPtr->lPos = infoPtr->lRangeMin;
1695         notify_with_scroll (infoPtr, TB_TOP);
1696         break;
1697     case VK_END:
1698         if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
1699         infoPtr->lPos = infoPtr->lRangeMax;
1700         notify_with_scroll (infoPtr, TB_BOTTOM);
1701         break;
1702     }
1703
1704     if (pos != infoPtr->lPos) {
1705         infoPtr->flags |=TB_THUMBPOSCHANGED;
1706         TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
1707     }
1708
1709     return TRUE;
1710 }
1711
1712
1713 static inline BOOL
1714 TRACKBAR_KeyUp (const TRACKBAR_INFO *infoPtr, INT nVirtKey, DWORD lKeyData)
1715 {
1716     switch (nVirtKey) {
1717     case VK_LEFT:
1718     case VK_UP:
1719     case VK_RIGHT:
1720     case VK_DOWN:
1721     case VK_NEXT:
1722     case VK_PRIOR:
1723     case VK_HOME:
1724     case VK_END:
1725         notify_with_scroll (infoPtr, TB_ENDTRACK);
1726     }
1727     return TRUE;
1728 }
1729
1730
1731 static LRESULT WINAPI
1732 TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1733 {
1734     TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);
1735
1736     TRACE("hwnd=%p msg=%x wparam=%lx lparam=%lx\n", hwnd, uMsg, wParam, lParam);
1737
1738     if (!infoPtr && (uMsg != WM_CREATE))
1739         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1740
1741     switch (uMsg)
1742     {
1743     case TBM_CLEARSEL:
1744         return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);
1745
1746     case TBM_CLEARTICS:
1747         return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);
1748
1749     case TBM_GETBUDDY:
1750         return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);
1751
1752     case TBM_GETCHANNELRECT:
1753         return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);
1754
1755     case TBM_GETLINESIZE:
1756         return infoPtr->lLineSize;
1757
1758     case TBM_GETNUMTICS:
1759         return TRACKBAR_GetNumTics (infoPtr);
1760
1761     case TBM_GETPAGESIZE:
1762         return infoPtr->lPageSize;
1763
1764     case TBM_GETPOS:
1765         return infoPtr->lPos;
1766
1767     case TBM_GETPTICS:
1768         return (LRESULT)infoPtr->tics;
1769
1770     case TBM_GETRANGEMAX:
1771         return infoPtr->lRangeMax;
1772
1773     case TBM_GETRANGEMIN:
1774         return infoPtr->lRangeMin;
1775
1776     case TBM_GETSELEND:
1777         return infoPtr->lSelMax;
1778
1779     case TBM_GETSELSTART:
1780         return infoPtr->lSelMin;
1781
1782     case TBM_GETTHUMBLENGTH:
1783         return infoPtr->uThumbLen;
1784
1785     case TBM_GETTHUMBRECT:
1786         return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);
1787
1788     case TBM_GETTIC:
1789         return TRACKBAR_GetTic (infoPtr, (INT)wParam);
1790
1791     case TBM_GETTICPOS:
1792         return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);
1793
1794     case TBM_GETTOOLTIPS:
1795         return (LRESULT)infoPtr->hwndToolTip;
1796
1797     case TBM_GETUNICODEFORMAT:
1798         return infoPtr->bUnicode;
1799
1800     case TBM_SETBUDDY:
1801         return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);
1802
1803     case TBM_SETLINESIZE:
1804         return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);
1805
1806     case TBM_SETPAGESIZE:
1807         return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);
1808
1809     case TBM_SETPOS:
1810         return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);
1811
1812     case TBM_SETRANGE:
1813         return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);
1814
1815     case TBM_SETRANGEMAX:
1816         return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);
1817
1818     case TBM_SETRANGEMIN:
1819         return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);
1820
1821     case TBM_SETSEL:
1822         return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);
1823
1824     case TBM_SETSELEND:
1825         return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);
1826
1827     case TBM_SETSELSTART:
1828         return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);
1829
1830     case TBM_SETTHUMBLENGTH:
1831         return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);
1832
1833     case TBM_SETTIC:
1834         return TRACKBAR_SetTic (infoPtr, (LONG)lParam);
1835
1836     case TBM_SETTICFREQ:
1837         return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);
1838
1839     case TBM_SETTIPSIDE:
1840         return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);
1841
1842     case TBM_SETTOOLTIPS:
1843         return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);
1844
1845     case TBM_SETUNICODEFORMAT:
1846         return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);
1847
1848
1849     case WM_CAPTURECHANGED:
1850         return TRACKBAR_CaptureChanged (infoPtr);
1851
1852     case WM_CREATE:
1853         return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);
1854
1855     case WM_DESTROY:
1856         return TRACKBAR_Destroy (infoPtr);
1857
1858 /*      case WM_ENABLE: */
1859
1860     case WM_ERASEBKGND:
1861         return 0;
1862
1863     case WM_GETDLGCODE:
1864         return DLGC_WANTARROWS;
1865
1866     case WM_KEYDOWN:
1867         return TRACKBAR_KeyDown (infoPtr, (INT)wParam, (DWORD)lParam);
1868
1869     case WM_KEYUP:
1870         return TRACKBAR_KeyUp (infoPtr, (INT)wParam, (DWORD)lParam);
1871
1872     case WM_KILLFOCUS:
1873         return TRACKBAR_KillFocus (infoPtr, (HWND)wParam);
1874
1875     case WM_LBUTTONDOWN:
1876         return TRACKBAR_LButtonDown (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
1877
1878     case WM_LBUTTONUP:
1879         return TRACKBAR_LButtonUp (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
1880
1881     case WM_MOUSELEAVE:
1882         infoPtr->flags &= ~TB_THUMB_HOT;
1883         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1884         return 0;
1885
1886     case WM_MOUSEMOVE:
1887         return TRACKBAR_MouseMove (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
1888
1889     case WM_PRINTCLIENT:
1890     case WM_PAINT:
1891         return TRACKBAR_Paint (infoPtr, (HDC)wParam);
1892
1893     case WM_SETFOCUS:
1894         return TRACKBAR_SetFocus (infoPtr, (HWND)wParam);
1895
1896     case WM_SIZE:
1897         return TRACKBAR_Size (infoPtr, wParam, LOWORD(lParam), HIWORD(lParam));
1898
1899     case WM_THEMECHANGED:
1900         return theme_changed (infoPtr);
1901
1902     case WM_TIMER:
1903         return TRACKBAR_Timer (infoPtr, (INT)wParam, (TIMERPROC *)lParam);
1904
1905     case WM_WININICHANGE:
1906         return TRACKBAR_InitializeThumb (infoPtr);
1907
1908     default:
1909         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
1910             ERR("unknown msg %04x wp=%08lx lp=%08lx\n", uMsg, wParam, lParam);
1911         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1912     }
1913 }
1914
1915
1916 void TRACKBAR_Register (void)
1917 {
1918     WNDCLASSW wndClass;
1919
1920     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
1921     wndClass.style         = CS_GLOBALCLASS;
1922     wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
1923     wndClass.cbClsExtra    = 0;
1924     wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
1925     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
1926     wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
1927     wndClass.lpszClassName = TRACKBAR_CLASSW;
1928
1929     RegisterClassW (&wndClass);
1930 }
1931
1932
1933 void TRACKBAR_Unregister (void)
1934 {
1935     UnregisterClassW (TRACKBAR_CLASSW, NULL);
1936 }