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
 721             stateId = TUS_NORMAL;
 722
 723         DrawThemeBackground (theme, hdc, partId, stateId, &infoPtr->rcThumb, NULL);
 724
 725         return;
 726     }
 727
 728     if (infoPtr->dwStyle & WS_DISABLED || infoPtr->flags & TB_DRAG_MODE)
 729     {
 730         if (comctl32_color.clr3dHilight == comctl32_color.clrWindow)
 731             brush = COMCTL32_hPattern55AABrush;
 732         else
 733             brush = GetSysColorBrush(COLOR_SCROLLBAR);
 734
 735         SetTextColor(hdc, comctl32_color.clr3dFace);
 736         SetBkColor(hdc, comctl32_color.clr3dHilight);
 737     }
 738     else
 739         brush = GetSysColorBrush(COLOR_BTNFACE);
 740
 741     PointDepth = TRACKBAR_FillThumb(infoPtr, hdc, brush);
 742
 743     if (infoPtr->dwStyle & TBS_BOTH)
 744     {
 745        DrawEdge(hdc, &infoPtr->rcThumb, EDGE_RAISED, BF_RECT | BF_SOFT);
 746        return;
 747     }
 748     else
 749     {
 750         RECT thumb = infoPtr->rcThumb;
 751
 752         if (infoPtr->dwStyle & TBS_VERT)
 753         {
 754           if (infoPtr->dwStyle & TBS_LEFT)
 755           {
 756             /* rectangular part */
 757             thumb.left += PointDepth;
 758             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_TOP | BF_RIGHT | BF_BOTTOM | BF_SOFT);
 759
 760             /* light edge */
 761             thumb.left -= PointDepth;
 762             thumb.right = thumb.left + PointDepth;
 763             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 764             thumb.top = infoPtr->rcThumb.top;
 765             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPRIGHT | BF_SOFT);
 766
 767             /* shadowed edge */
 768             thumb.top += PointDepth;
 769             thumb.bottom += PointDepth;
 770             DrawEdge(hdc, &thumb, EDGE_SUNKEN, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 771             return;
 772           }
 773           else
 774           {
 775             /* rectangular part */
 776             thumb.right -= PointDepth;
 777             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_TOP | BF_LEFT | BF_BOTTOM | BF_SOFT);
 778
 779             /* light edge */
 780             thumb.left = thumb.right;
 781             thumb.right += PointDepth + 1;
 782             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 783             thumb.top = infoPtr->rcThumb.top;
 784             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 785
 786             /* shadowed edge */
 787             thumb.top += PointDepth;
 788             thumb.bottom += PointDepth;
 789             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT);
 790           }
 791         }
 792         else
 793         {
 794           if (infoPtr->dwStyle & TBS_TOP)
 795           {
 796             /* rectangular part */
 797             thumb.top += PointDepth;
 798             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_LEFT | BF_BOTTOM | BF_RIGHT | BF_SOFT);
 799
 800             /* light edge */
 801             thumb.left = infoPtr->rcThumb.left;
 802             thumb.right = thumb.left + PointDepth;
 803             thumb.bottom = infoPtr->rcThumb.top + PointDepth + 1;
 804             thumb.top -= PointDepth;
 805             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPRIGHT | BF_SOFT);
 806
 807             /* shadowed edge */
 808             thumb.left += PointDepth;
 809             thumb.right += PointDepth;
 810             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMRIGHT | BF_SOFT);
 811           }
 812           else
 813           {
 814             /* rectangular part */
 815             thumb.bottom -= PointDepth;
 816             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_LEFT | BF_TOP | BF_RIGHT | BF_SOFT);
 817
 818             /* light edge */
 819             thumb.left = infoPtr->rcThumb.left;
 820             thumb.right = thumb.left + PointDepth;
 821             thumb.top = infoPtr->rcThumb.bottom - PointDepth - 1;
 822             thumb.bottom += PointDepth;
 823             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDTOPLEFT | BF_SOFT);
 824
 825             /* shadowed edge */
 826             thumb.left += PointDepth;
 827             thumb.right += PointDepth;
 828             DrawEdge(hdc, &thumb, EDGE_RAISED, BF_DIAGONAL_ENDBOTTOMLEFT | BF_SOFT);
 829           }
 830         }
 831     }
 832 }
 833
 834
 835 static inline void
 836 TRACKBAR_ActivateToolTip (const TRACKBAR_INFO *infoPtr, BOOL fShow)
 837 {
 838     TTTOOLINFOW ti;
 839
 840     if (!infoPtr->hwndToolTip) return;
 841
 842     ZeroMemory(&ti, sizeof(ti));
 843     ti.cbSize = sizeof(ti);
 844     ti.hwnd   = infoPtr->hwndSelf;
 845
 846     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKACTIVATE, fShow, (LPARAM)&ti);
 847 }
 848
 849
 850 static void
 851 TRACKBAR_UpdateToolTip (const TRACKBAR_INFO *infoPtr)
 852 {
 853     WCHAR buf[80];
 854     TTTOOLINFOW ti;
 855     POINT pt;
 856     RECT rcClient;
 857     LRESULT size;
 858
 859     if (!infoPtr->hwndToolTip) return;
 860
 861     ZeroMemory(&ti, sizeof(ti));
 862     ti.cbSize = sizeof(ti);
 863     ti.hwnd   = infoPtr->hwndSelf;
 864     ti.uFlags = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
 865
 866     wsprintfW (buf, L"%ld", infoPtr->lPos);
 867     ti.lpszText = buf;
 868     SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 869
 870     GetClientRect (infoPtr->hwndSelf, &rcClient);
 871     size = SendMessageW (infoPtr->hwndToolTip, TTM_GETBUBBLESIZE, 0, (LPARAM)&ti);
 872     if (infoPtr->dwStyle & TBS_VERT) {
 873         if (infoPtr->fLocation == TBTS_LEFT)
 874             pt.x = 0 - LOWORD(size) - TOOLTIP_OFFSET;
 875         else
 876             pt.x = rcClient.right + TOOLTIP_OFFSET;
 877         pt.y = (infoPtr->rcThumb.top + infoPtr->rcThumb.bottom - HIWORD(size))/2;
 878     } else {
 879         if (infoPtr->fLocation == TBTS_TOP)
 880             pt.y = 0 - HIWORD(size) - TOOLTIP_OFFSET;
 881         else
 882             pt.y = rcClient.bottom + TOOLTIP_OFFSET;
 883         pt.x = (infoPtr->rcThumb.left + infoPtr->rcThumb.right - LOWORD(size))/2;
 884     }
 885     ClientToScreen(infoPtr->hwndSelf, &pt);
 886
 887     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKPOSITION,
 888                   0, MAKELPARAM(pt.x, pt.y));
 889 }
 890
 891
 892 static void
 893 TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdcDst)
 894 {
 895     RECT rcClient;
 896     HDC hdc;
 897     HBITMAP hOldBmp = 0, hOffScreenBmp = 0;
 898     NMCUSTOMDRAW nmcd;
 899     int gcdrf, icdrf;
 900
 901     if (infoPtr->flags & TB_THUMBCHANGED) {
 902         TRACKBAR_UpdateThumb (infoPtr);
 903         if (infoPtr->flags & TB_THUMBSIZECHANGED)
 904             TRACKBAR_CalcChannel (infoPtr);
 905     }
 906     if (infoPtr->flags & TB_SELECTIONCHANGED)
 907         TRACKBAR_CalcSelection (infoPtr);
 908
 909     if (infoPtr->flags & TB_DRAG_MODE)
 910         TRACKBAR_UpdateToolTip (infoPtr);
 911
 912     infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
 913
 914     GetClientRect (infoPtr->hwndSelf, &rcClient);
 915
 916     /* try to render offscreen, if we fail, carrry onscreen */
 917     hdc = CreateCompatibleDC(hdcDst);
 918     if (hdc) {
 919         hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
 920         if (hOffScreenBmp) {
 921             hOldBmp = SelectObject(hdc, hOffScreenBmp);
 922         } else {
 923             DeleteObject(hdc);
 924             hdc = hdcDst;
 925         }
 926     } else {
 927         hdc = hdcDst;
 928     }
 929
 930     ZeroMemory(&nmcd, sizeof(nmcd));
 931     nmcd.hdr.hwndFrom = infoPtr->hwndSelf;
 932     nmcd.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
 933     nmcd.hdr.code = NM_CUSTOMDRAW;
 934     nmcd.hdc = hdc;
 935
 936     /* start the paint cycle */
 937     nmcd.rc = rcClient;
 938     gcdrf = notify_customdraw(infoPtr, &nmcd, CDDS_PREPAINT);
 939     if (gcdrf & CDRF_SKIPDEFAULT) goto cleanup;
 940
 941     /* Erase background */
 942     if (gcdrf == CDRF_DODEFAULT ||
 943         notify_customdraw(infoPtr, &nmcd, CDDS_PREERASE) != CDRF_SKIPDEFAULT) {
 944         if (GetWindowTheme (infoPtr->hwndSelf)) {
 945             DrawThemeParentBackground (infoPtr->hwndSelf, hdc, 0);
 946         }
 947         else {
 948             HBRUSH brush = (HBRUSH)SendMessageW(infoPtr->hwndNotify, WM_CTLCOLORSTATIC,
 949                     (WPARAM)hdc, (LPARAM)infoPtr->hwndSelf);
 950             FillRect (hdc, &rcClient, brush ? brush : GetSysColorBrush(COLOR_BTNFACE));
 951         }
 952         if (gcdrf != CDRF_DODEFAULT)
 953             notify_customdraw(infoPtr, &nmcd, CDDS_POSTERASE);
 954     }
 955
 956     /* draw channel */
 957     if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 958         nmcd.dwItemSpec = TBCD_CHANNEL;
 959         nmcd.uItemState = CDIS_DEFAULT;
 960         nmcd.rc = infoPtr->rcChannel;
 961         icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 962     } else icdrf = CDRF_DODEFAULT;
 963     if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 964         TRACKBAR_DrawChannel (infoPtr, hdc);
 965         if (icdrf & CDRF_NOTIFYPOSTPAINT)
 966             notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 967     }
 968
 969
 970     /* draw tics */
 971     if (!(infoPtr->dwStyle & TBS_NOTICKS)) {
 972         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 973             nmcd.dwItemSpec = TBCD_TICS;
 974             nmcd.uItemState = CDIS_DEFAULT;
 975             nmcd.rc = rcClient;
 976             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 977         } else icdrf = CDRF_DODEFAULT;
 978         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 979             TRACKBAR_DrawTics (infoPtr, hdc);
 980             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 981                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 982         }
 983     }
 984
 985     /* draw thumb */
 986     if (!(infoPtr->dwStyle & TBS_NOTHUMB)) {
 987         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 988             nmcd.dwItemSpec = TBCD_THUMB;
 989             nmcd.uItemState = infoPtr->flags & TB_DRAG_MODE ? CDIS_HOT : CDIS_DEFAULT;
 990             nmcd.rc = infoPtr->rcThumb;
 991             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 992         } else icdrf = CDRF_DODEFAULT;
 993         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 994             TRACKBAR_DrawThumb(infoPtr, hdc);
 995             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 996                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 997         }
 998     }
 999
1000     /* draw focus rectangle */
1001     if (infoPtr->flags & TB_IS_FOCUSED) {
1002         DrawFocusRect(hdc, &rcClient);
1003     }
1004
1005     /* finish up the painting */
1006     if (gcdrf & CDRF_NOTIFYPOSTPAINT)
1007         notify_customdraw(infoPtr, &nmcd, CDDS_POSTPAINT);
1008
1009 cleanup:
1010     /* cleanup, if we rendered offscreen */
1011     if (hdc != hdcDst) {
1012         BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
1013         SelectObject(hdc, hOldBmp);
1014         DeleteObject(hOffScreenBmp);
1015         DeleteObject(hdc);
1016     }
1017 }
1018
1019
1020 static void
1021 TRACKBAR_AlignBuddies (const TRACKBAR_INFO *infoPtr)
1022 {
1023     HWND hwndParent = GetParent (infoPtr->hwndSelf);
1024     RECT rcSelf, rcBuddy;
1025     INT x, y;
1026
1027     GetWindowRect (infoPtr->hwndSelf, &rcSelf);
1028     MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcSelf, 2);
1029
1030     /* align buddy left or above */
1031     if (infoPtr->hwndBuddyLA) {
1032         GetWindowRect (infoPtr->hwndBuddyLA, &rcBuddy);
1033         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1034
1035         if (infoPtr->dwStyle & TBS_VERT) {
1036             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1037                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1038             y = rcSelf.top - (rcBuddy.bottom - rcBuddy.top);
1039         }
1040         else {
1041             x = rcSelf.left - (rcBuddy.right - rcBuddy.left);
1042             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1043                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1044         }
1045
1046         SetWindowPos (infoPtr->hwndBuddyLA, 0, x, y, 0, 0,
1047                       SWP_NOZORDER | SWP_NOSIZE);
1048     }
1049
1050
1051     /* align buddy right or below */
1052     if (infoPtr->hwndBuddyRB) {
1053         GetWindowRect (infoPtr->hwndBuddyRB, &rcBuddy);
1054         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
1055
1056         if (infoPtr->dwStyle & TBS_VERT) {
1057             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
1058                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
1059             y = rcSelf.bottom;
1060         }
1061         else {
1062             x = rcSelf.right;
1063             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
1064                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
1065         }
1066         SetWindowPos (infoPtr->hwndBuddyRB, 0, x, y, 0, 0,
1067                       SWP_NOZORDER | SWP_NOSIZE);
1068     }
1069 }
1070
1071
1072 static LRESULT
1073 TRACKBAR_ClearSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1074 {
1075     infoPtr->lSelMin = 0;
1076     infoPtr->lSelMax = 0;
1077     infoPtr->flags |= TB_SELECTIONCHANGED;
1078
1079     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1080
1081     return 0;
1082 }
1083
1084
1085 static LRESULT
1086 TRACKBAR_ClearTics (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
1087 {
1088     if (infoPtr->tics) {
1089         Free (infoPtr->tics);
1090         infoPtr->tics = NULL;
1091         infoPtr->uNumTics = 0;
1092     }
1093
1094     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1095
1096     return 0;
1097 }
1098
1099
1100 static inline LRESULT
1101 TRACKBAR_GetChannelRect (const TRACKBAR_INFO *infoPtr, LPRECT lprc)
1102 {
1103     if (lprc == NULL) return 0;
1104
1105     lprc->left   = infoPtr->rcChannel.left;
1106     lprc->right  = infoPtr->rcChannel.right;
1107     lprc->bottom = infoPtr->rcChannel.bottom;
1108     lprc->top    = infoPtr->rcChannel.top;
1109
1110     return 0;
1111 }
1112
1113
1114 static inline LONG
1115 TRACKBAR_GetNumTics (const TRACKBAR_INFO *infoPtr)
1116 {
1117     if (infoPtr->dwStyle & TBS_NOTICKS) return 0;
1118
1119     return infoPtr->uNumTics + 2;
1120 }
1121
1122
1123 static int __cdecl comp_tics (const void *ap, const void *bp)
1124 {
1125     const DWORD a = *(const DWORD *)ap;
1126     const DWORD b = *(const DWORD *)bp;
1127
1128     TRACE("(a=%d, b=%d)\n", a, b);
1129     if (a < b) return -1;
1130     if (a > b) return 1;
1131     return 0;
1132 }
1133
1134
1135 static inline LONG
1136 TRACKBAR_GetTic (const TRACKBAR_INFO *infoPtr, INT iTic)
1137 {
1138     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1139         return -1;
1140
1141     qsort(infoPtr->tics, infoPtr->uNumTics, sizeof(DWORD), comp_tics);
1142     return infoPtr->tics[iTic];
1143 }
1144
1145
1146 static inline LONG
1147 TRACKBAR_GetTicPos (const TRACKBAR_INFO *infoPtr, INT iTic)
1148 {
1149     LONG range, width, pos, tic;
1150     int offsetthumb;
1151
1152     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1153         return -1;
1154
1155     tic   = TRACKBAR_GetTic (infoPtr, iTic);
1156     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
1157     if (range <= 0) range = 1;
1158     offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
1159     width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
1160     pos   = infoPtr->rcChannel.left + offsetthumb + (width * tic) / range;
1161
1162     return pos;
1163 }
1164
1165
1166 static HWND
1167 TRACKBAR_SetBuddy (TRACKBAR_INFO *infoPtr, BOOL fLocation, HWND hwndBuddy)
1168 {
1169     HWND hwndTemp;
1170
1171     if (fLocation) {
1172         /* buddy is left or above */
1173         hwndTemp = infoPtr->hwndBuddyLA;
1174         infoPtr->hwndBuddyLA = hwndBuddy;
1175     }
1176     else {
1177         /* buddy is right or below */
1178         hwndTemp = infoPtr->hwndBuddyRB;
1179         infoPtr->hwndBuddyRB = hwndBuddy;
1180     }
1181
1182     TRACKBAR_AlignBuddies (infoPtr);
1183
1184     return hwndTemp;
1185 }
1186
1187
1188 static inline LONG
1189 TRACKBAR_SetLineSize (TRACKBAR_INFO *infoPtr, LONG lLineSize)
1190 {
1191     LONG lTemp = infoPtr->lLineSize;
1192
1193     infoPtr->lLineSize = lLineSize;
1194
1195     return lTemp;
1196 }
1197
1198 static void TRACKBAR_UpdatePageSize(TRACKBAR_INFO *infoPtr)
1199 {
1200     if (infoPtr->flags & TB_USER_PAGE)
1201         return;
1202
1203     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1204     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1205 }
1206
1207 static inline LONG
1208 TRACKBAR_SetPageSize (TRACKBAR_INFO *infoPtr, LONG lPageSize)
1209 {
1210     LONG lTemp = infoPtr->lPageSize;
1211
1212     if (lPageSize == -1)
1213     {
1214         infoPtr->flags &= ~TB_USER_PAGE;
1215         TRACKBAR_UpdatePageSize(infoPtr);
1216     }
1217     else
1218     {
1219         infoPtr->flags |= TB_USER_PAGE;
1220         infoPtr->lPageSize = lPageSize;
1221     }
1222
1223     return lTemp;
1224 }
1225
1226
1227 static inline LRESULT
1228 TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
1229 {
1230     LONG oldPos = infoPtr->lPos;
1231     infoPtr->lPos = lPosition;
1232
1233     if (infoPtr->lPos < infoPtr->lRangeMin)
1234         infoPtr->lPos = infoPtr->lRangeMin;
1235
1236     if (infoPtr->lPos > infoPtr->lRangeMax)
1237         infoPtr->lPos = infoPtr->lRangeMax;
1238
1239     if (fPosition && oldPos != lPosition)
1240     {
1241         TRACKBAR_UpdateThumb(infoPtr);
1242         TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
1243     }
1244
1245     return 0;
1246 }
1247
1248 static inline LRESULT
1249 TRACKBAR_SetRange (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG range)
1250 {
1251     BOOL changed = infoPtr->lRangeMin != (SHORT)LOWORD(range) ||
1252                    infoPtr->lRangeMax != (SHORT)HIWORD(range);
1253
1254     infoPtr->lRangeMin = (SHORT)LOWORD(range);
1255     infoPtr->lRangeMax = (SHORT)HIWORD(range);
1256
1257     /* clip position to new min/max limit */
1258     if (infoPtr->lPos < infoPtr->lRangeMin)
1259         infoPtr->lPos = infoPtr->lRangeMin;
1260
1261     if (infoPtr->lPos > infoPtr->lRangeMax)
1262         infoPtr->lPos = infoPtr->lRangeMax;
1263
1264     TRACKBAR_UpdatePageSize(infoPtr);
1265
1266     if (changed) {
1267         if (infoPtr->dwStyle & TBS_AUTOTICKS)
1268             TRACKBAR_RecalculateTics (infoPtr);
1269         infoPtr->flags |= TB_THUMBPOSCHANGED;
1270     }
1271
1272     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1273
1274     return 0;
1275 }
1276
1277
1278 static inline LRESULT
1279 TRACKBAR_SetRangeMax (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMax)
1280 {
1281     BOOL changed = infoPtr->lRangeMax != lMax;
1282     LONG rightmost = max(lMax, infoPtr->lRangeMin);
1283
1284     infoPtr->lRangeMax = lMax;
1285     if (infoPtr->lPos > rightmost) {
1286         infoPtr->lPos = rightmost;
1287         infoPtr->flags |= TB_THUMBPOSCHANGED;
1288     }
1289
1290     TRACKBAR_UpdatePageSize(infoPtr);
1291
1292     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1293         TRACKBAR_RecalculateTics (infoPtr);
1294
1295     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1296
1297     return 0;
1298 }
1299
1300
1301 static inline LRESULT
1302 TRACKBAR_SetRangeMin (TRACKBAR_INFO *infoPtr, BOOL redraw, LONG lMin)
1303 {
1304     BOOL changed = infoPtr->lRangeMin != lMin;
1305
1306     infoPtr->lRangeMin = lMin;
1307     if (infoPtr->lPos < infoPtr->lRangeMin) {
1308         infoPtr->lPos = infoPtr->lRangeMin;
1309         infoPtr->flags |= TB_THUMBPOSCHANGED;
1310     }
1311
1312     TRACKBAR_UpdatePageSize(infoPtr);
1313
1314     if (changed && (infoPtr->dwStyle & TBS_AUTOTICKS))
1315         TRACKBAR_RecalculateTics (infoPtr);
1316
1317     if (redraw) TRACKBAR_InvalidateAll(infoPtr);
1318
1319     return 0;
1320 }
1321
1322
1323 static inline LRESULT
1324 TRACKBAR_SetSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lSel)
1325 {
1326     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1327         infoPtr->lSelMin = 0;
1328         infoPtr->lSelMax = 0;
1329         return 0;
1330     }
1331
1332     infoPtr->lSelMin = (SHORT)LOWORD(lSel);
1333     infoPtr->lSelMax = (SHORT)HIWORD(lSel);
1334     infoPtr->flags |= TB_SELECTIONCHANGED;
1335
1336     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1337         infoPtr->lSelMin = infoPtr->lRangeMin;
1338     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1339         infoPtr->lSelMax = infoPtr->lRangeMax;
1340
1341     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1342
1343     return 0;
1344 }
1345
1346
1347 static inline LRESULT
1348 TRACKBAR_SetSelEnd (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lEnd)
1349 {
1350     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1351         infoPtr->lSelMax = 0;
1352         return 0;
1353     }
1354
1355     infoPtr->lSelMax = lEnd;
1356     infoPtr->flags |= TB_SELECTIONCHANGED;
1357
1358     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1359         infoPtr->lSelMax = infoPtr->lRangeMax;
1360
1361     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1362
1363     return 0;
1364 }
1365
1366
1367 static inline LRESULT
1368 TRACKBAR_SetSelStart (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lStart)
1369 {
1370     if (!(infoPtr->dwStyle & TBS_ENABLESELRANGE)){
1371         infoPtr->lSelMin = 0;
1372         return 0;
1373     }
1374
1375     infoPtr->lSelMin = lStart;
1376     infoPtr->flags  |=TB_SELECTIONCHANGED;
1377
1378     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1379         infoPtr->lSelMin = infoPtr->lRangeMin;
1380
1381     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1382
1383     return 0;
1384 }
1385
1386
1387 static inline LRESULT
1388 TRACKBAR_SetThumbLength (TRACKBAR_INFO *infoPtr, UINT iLength)
1389 {
1390     if (infoPtr->dwStyle & TBS_FIXEDLENGTH) {
1391         /* We're not supposed to check if it's really changed or not,
1392            just repaint in any case. */
1393         infoPtr->uThumbLen = iLength;
1394         infoPtr->flags |= TB_THUMBSIZECHANGED;
1395         TRACKBAR_InvalidateAll(infoPtr);
1396     }
1397
1398     return 0;
1399 }
1400
1401
1402 static inline LRESULT
1403 TRACKBAR_SetTic (TRACKBAR_INFO *infoPtr, LONG lPos)
1404 {
1405     if ((lPos < infoPtr->lRangeMin) || (lPos> infoPtr->lRangeMax))
1406         return FALSE;
1407
1408     TRACE("lPos=%d\n", lPos);
1409
1410     infoPtr->uNumTics++;
1411     infoPtr->tics=ReAlloc( infoPtr->tics,
1412                                     (infoPtr->uNumTics)*sizeof (DWORD));
1413     if (!infoPtr->tics) {
1414         infoPtr->uNumTics = 0;
1415         notify(infoPtr, NM_OUTOFMEMORY);
1416         return FALSE;
1417     }
1418     infoPtr->tics[infoPtr->uNumTics-1] = lPos;
1419
1420     TRACKBAR_InvalidateAll(infoPtr);
1421
1422     return TRUE;
1423 }
1424
1425
1426 static inline LRESULT
1427 TRACKBAR_SetTicFreq (TRACKBAR_INFO *infoPtr, WORD wFreq)
1428 {
1429     if (infoPtr->dwStyle & TBS_AUTOTICKS) {
1430         infoPtr->uTicFreq = wFreq;
1431         TRACKBAR_RecalculateTics (infoPtr);
1432         TRACKBAR_InvalidateAll(infoPtr);
1433     }
1434
1435     TRACKBAR_UpdateThumb (infoPtr);
1436     return 0;
1437 }
1438
1439
1440 static inline INT
1441 TRACKBAR_SetTipSide (TRACKBAR_INFO *infoPtr, INT fLocation)
1442 {
1443     INT fTemp = infoPtr->fLocation;
1444
1445     infoPtr->fLocation = fLocation;
1446
1447     return fTemp;
1448 }
1449
1450
1451 static inline LRESULT
1452 TRACKBAR_SetToolTips (TRACKBAR_INFO *infoPtr, HWND hwndTT)
1453 {
1454     infoPtr->hwndToolTip = hwndTT;
1455
1456     return 0;
1457 }
1458
1459
1460 static inline BOOL
1461 TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
1462 {
1463     BOOL bTemp = infoPtr->bUnicode;
1464
1465     infoPtr->bUnicode = fUnicode;
1466
1467     return bTemp;
1468 }
1469
1470 static int get_scaled_metric(const TRACKBAR_INFO *infoPtr, int value)
1471 {
1472     return MulDiv(value, GetDpiForWindow(infoPtr->hwndSelf), 96);
1473 }
1474
1475 static LRESULT
1476 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
1477 {
1478     int client_size;
1479     RECT rect;
1480
1481     infoPtr->uThumbLen = get_scaled_metric(infoPtr, infoPtr->dwStyle & TBS_ENABLESELRANGE ? 23 : 21);
1482
1483     if (!(infoPtr->dwStyle & TBS_FIXEDLENGTH))
1484     {
1485         GetClientRect(infoPtr->hwndSelf, &rect);
1486         if (infoPtr->dwStyle & TBS_VERT)
1487             client_size = rect.right - rect.left;
1488         else
1489             client_size = rect.bottom - rect.top;
1490
1491         if (client_size < infoPtr->uThumbLen)
1492             infoPtr->uThumbLen = client_size > get_scaled_metric(infoPtr, 9) ?
1493                 client_size - get_scaled_metric(infoPtr, 5) : get_scaled_metric(infoPtr, 4);
1494     }
1495
1496     TRACKBAR_CalcChannel (infoPtr);
1497     TRACKBAR_UpdateThumb (infoPtr);
1498     infoPtr->flags &= ~TB_SELECTIONCHANGED;
1499
1500     return 0;
1501 }
1502
1503
1504 static LRESULT
1505 TRACKBAR_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
1506 {
1507     TRACKBAR_INFO *infoPtr;
1508
1509     infoPtr = Alloc (sizeof(TRACKBAR_INFO));
1510     if (!infoPtr) return -1;
1511     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1512
1513     /* set default values */
1514     infoPtr->hwndSelf  = hwnd;
1515     infoPtr->dwStyle   = lpcs->style;
1516     infoPtr->lRangeMin = 0;
1517     infoPtr->lRangeMax = 100;
1518     infoPtr->lLineSize = 1;
1519     infoPtr->lPageSize = TB_DEFAULTPAGESIZE;
1520     infoPtr->lSelMin   = 0;
1521     infoPtr->lSelMax   = 0;
1522     infoPtr->lPos      = 0;
1523     infoPtr->fLocation = TBTS_TOP;
1524     infoPtr->uNumTics  = 0;    /* start and end tic are not included in count*/
1525     infoPtr->uTicFreq  = 1;
1526     infoPtr->tics      = NULL;
1527     infoPtr->hwndNotify= lpcs->hwndParent;
1528
1529     TRACKBAR_InitializeThumb (infoPtr);
1530
1531     /* Create tooltip control */
1532     if (infoPtr->dwStyle & TBS_TOOLTIPS) {
1533
1534         infoPtr->hwndToolTip =
1535             CreateWindowExW (0, TOOLTIPS_CLASSW, NULL, WS_POPUP,
1536                              CW_USEDEFAULT, CW_USEDEFAULT,
1537                              CW_USEDEFAULT, CW_USEDEFAULT,
1538                              hwnd, 0, 0, 0);
1539
1540         if (infoPtr->hwndToolTip) {
1541             TTTOOLINFOW ti;
1542             WCHAR wEmpty[] = L"";
1543             ZeroMemory (&ti, sizeof(ti));
1544             ti.cbSize   = sizeof(ti);
1545             ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
1546             ti.hwnd     = hwnd;
1547             ti.lpszText = wEmpty;
1548
1549             SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
1550          }
1551     }
1552
1553     OpenThemeData (hwnd, themeClass);
1554
1555     return 0;
1556 }
1557
1558
1559 static LRESULT
1560 TRACKBAR_Destroy (TRACKBAR_INFO *infoPtr)
1561 {
1562     /* delete tooltip control */
1563     if (infoPtr->hwndToolTip)
1564         DestroyWindow (infoPtr->hwndToolTip);
1565
1566     Free (infoPtr->tics);
1567     infoPtr->tics = NULL;
1568
1569     SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
1570     CloseThemeData (GetWindowTheme (infoPtr->hwndSelf));
1571     Free (infoPtr);
1572
1573     return 0;
1574 }
1575
1576
1577 static LRESULT
1578 TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr)
1579 {
1580     TRACE("\n");
1581     infoPtr->flags &= ~TB_IS_FOCUSED;
1582     TRACKBAR_InvalidateAll(infoPtr);
1583
1584     return 0;
1585 }
1586
1587 static LRESULT
1588 TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, INT x, INT y)
1589 {
1590     POINT clickPoint;
1591
1592     clickPoint.x = x;
1593     clickPoint.y = y;
1594
1595     SetFocus(infoPtr->hwndSelf);
1596
1597     if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
1598         infoPtr->flags |= TB_DRAG_MODE;
1599         SetCapture (infoPtr->hwndSelf);
1600         TRACKBAR_UpdateToolTip (infoPtr);
1601         TRACKBAR_ActivateToolTip (infoPtr, TRUE);
1602         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1603     } else {
1604         LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
1605         if (dir == 0) return 0;
1606         infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
1607         TRACKBAR_AutoPage (infoPtr, clickPoint);
1608         SetCapture (infoPtr->hwndSelf);
1609         SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
1610     }
1611
1612     return 0;
1613 }
1614
1615
1616 static LRESULT
1617 TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr)
1618 {
1619     if (infoPtr->flags & TB_DRAG_MODE) {
1620         notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
1621         notify_with_scroll (infoPtr, TB_ENDTRACK);
1622         infoPtr->flags &= ~TB_DRAG_MODE;
1623         ReleaseCapture ();
1624         notify(infoPtr, NM_RELEASEDCAPTURE);
1625         TRACKBAR_ActivateToolTip(infoPtr, FALSE);
1626         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1627     }
1628     if (infoPtr->flags & TB_AUTO_PAGE) {
1629         KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
1630         infoPtr->flags &= ~TB_AUTO_PAGE;
1631         notify_with_scroll (infoPtr, TB_ENDTRACK);
1632         ReleaseCapture ();
1633         notify(infoPtr, NM_RELEASEDCAPTURE);
1634     }
1635
1636     return 0;
1637 }
1638
1639
1640 static LRESULT
1641 TRACKBAR_CaptureChanged (const TRACKBAR_INFO *infoPtr)
1642 {
1643     notify_with_scroll (infoPtr, TB_ENDTRACK);
1644     return 0;
1645 }
1646
1647
1648 static LRESULT
1649 TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
1650 {
1651     if (hdc) {
1652         TRACKBAR_Refresh(infoPtr, hdc);
1653     } else {
1654         PAINTSTRUCT ps;
1655         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
1656         TRACKBAR_Refresh (infoPtr, hdc);
1657         EndPaint (infoPtr->hwndSelf, &ps);
1658     }
1659
1660     return 0;
1661 }
1662
1663
1664 static LRESULT
1665 TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr)
1666 {
1667     TRACE("\n");
1668     infoPtr->flags |= TB_IS_FOCUSED;
1669     TRACKBAR_InvalidateAll(infoPtr);
1670
1671     return 0;
1672 }
1673
1674
1675 static LRESULT
1676 TRACKBAR_Size (TRACKBAR_INFO *infoPtr)
1677 {
1678     if (infoPtr->dwStyle & TBS_FIXEDLENGTH)
1679     {
1680         TRACKBAR_CalcChannel(infoPtr);
1681         TRACKBAR_UpdateThumb(infoPtr);
1682     }
1683     else
1684         TRACKBAR_InitializeThumb(infoPtr);
1685     TRACKBAR_AlignBuddies (infoPtr);
1686     TRACKBAR_InvalidateAll(infoPtr);
1687
1688     return 0;
1689 }
1690
1691 static LRESULT
1692 TRACKBAR_StyleChanged (TRACKBAR_INFO *infoPtr, WPARAM wStyleType,
1693                        const STYLESTRUCT *lpss)
1694 {
1695     if (wStyleType != GWL_STYLE) return 0;
1696
1697     infoPtr->dwStyle = lpss->styleNew;
1698
1699     return 0;
1700 }
1701
1702 static LRESULT
1703 TRACKBAR_Timer (TRACKBAR_INFO *infoPtr)
1704 {
1705     if (infoPtr->flags & TB_AUTO_PAGE) {
1706         POINT pt;
1707         if (GetCursorPos(&pt))
1708             if (ScreenToClient(infoPtr->hwndSelf, &pt))
1709                 TRACKBAR_AutoPage(infoPtr, pt);
1710     }
1711     return 0;
1712 }
1713
1714
1715 /* update theme after a WM_THEMECHANGED message */
1716 static LRESULT theme_changed (const TRACKBAR_INFO* infoPtr)
1717 {
1718     HTHEME theme = GetWindowTheme (infoPtr->hwndSelf);
1719     CloseThemeData (theme);
1720     OpenThemeData (infoPtr->hwndSelf, themeClass);
1721     return 0;
1722 }
1723
1724
1725 static LRESULT
1726 TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, INT x, INT y)
1727 {
1728     INT clickPlace = (infoPtr->dwStyle & TBS_VERT) ? y : x;
1729     LONG dragPos, oldPos = infoPtr->lPos;
1730
1731     TRACE("(x=%d. y=%d)\n", x, y);
1732
1733     if (infoPtr->flags & TB_AUTO_PAGE) {
1734         POINT pt;
1735         pt.x = x;
1736         pt.y = y;
1737         TRACKBAR_AutoPage (infoPtr, pt);
1738         return TRUE;
1739     }
1740
1741     if (!(infoPtr->flags & TB_DRAG_MODE))
1742     {
1743         if (GetWindowTheme (infoPtr->hwndSelf))
1744         {
1745             DWORD oldFlags = infoPtr->flags;
1746             POINT pt;
1747             pt.x = x;
1748             pt.y = y;
1749             if (PtInRect (&infoPtr->rcThumb, pt))
1750             {
1751                 TRACKMOUSEEVENT tme;
1752                 tme.cbSize = sizeof( tme );
1753                 tme.dwFlags = TME_LEAVE;
1754                 tme.hwndTrack = infoPtr->hwndSelf;
1755                 TrackMouseEvent( &tme );
1756                 infoPtr->flags |= TB_THUMB_HOT;
1757             }
1758             else
1759             {
1760                 TRACKMOUSEEVENT tme;
1761                 tme.cbSize = sizeof( tme );
1762                 tme.dwFlags = TME_CANCEL;
1763                 tme.hwndTrack = infoPtr->hwndSelf;
1764                 TrackMouseEvent( &tme );
1765                 infoPtr->flags &= ~TB_THUMB_HOT;
1766             }
1767             if (oldFlags != infoPtr->flags) InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1768         }
1769         return TRUE;
1770     }
1771
1772     dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace);
1773
1774     if (dragPos == oldPos) return TRUE;
1775
1776     infoPtr->lPos = dragPos;
1777     TRACKBAR_UpdateThumb (infoPtr);
1778
1779     notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));
1780
1781     TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
1782     UpdateWindow (infoPtr->hwndSelf);
1783
1784     return TRUE;
1785 }
1786
1787 static BOOL
1788 TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey)
1789 {
1790     BOOL downIsLeft = infoPtr->dwStyle & TBS_DOWNISLEFT;
1791     BOOL vert = infoPtr->dwStyle & TBS_VERT;
1792     LONG pos = infoPtr->lPos;
1793
1794     TRACE("%x\n", nVirtKey);
1795
1796     switch (nVirtKey) {
1797     case VK_UP:
1798         if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1799         else TRACKBAR_LineUp(infoPtr);
1800         break;
1801     case VK_LEFT:
1802         if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1803         else TRACKBAR_LineUp(infoPtr);
1804         break;
1805     case VK_DOWN:
1806         if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1807         else TRACKBAR_LineDown(infoPtr);
1808         break;
1809     case VK_RIGHT:
1810         if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1811         else TRACKBAR_LineDown(infoPtr);
1812         break;
1813     case VK_NEXT:
1814         if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
1815         else TRACKBAR_PageDown(infoPtr);
1816         break;
1817     case VK_PRIOR:
1818         if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
1819         else TRACKBAR_PageUp(infoPtr);
1820         break;
1821     case VK_HOME:
1822         if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
1823         infoPtr->lPos = infoPtr->lRangeMin;
1824         notify_with_scroll (infoPtr, TB_TOP);
1825         break;
1826     case VK_END:
1827         if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
1828         infoPtr->lPos = infoPtr->lRangeMax;
1829         notify_with_scroll (infoPtr, TB_BOTTOM);
1830         break;
1831     }
1832
1833     if (pos != infoPtr->lPos) {
1834         TRACKBAR_UpdateThumb (infoPtr);
1835         TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
1836     }
1837
1838     return TRUE;
1839 }
1840
1841
1842 static inline BOOL
1843 TRACKBAR_KeyUp (const TRACKBAR_INFO *infoPtr, INT nVirtKey)
1844 {
1845     switch (nVirtKey) {
1846     case VK_LEFT:
1847     case VK_UP:
1848     case VK_RIGHT:
1849     case VK_DOWN:
1850     case VK_NEXT:
1851     case VK_PRIOR:
1852     case VK_HOME:
1853     case VK_END:
1854         notify_with_scroll (infoPtr, TB_ENDTRACK);
1855     }
1856     return TRUE;
1857 }
1858
1859
1860 static LRESULT
1861 TRACKBAR_Enable (TRACKBAR_INFO *infoPtr, BOOL enable)
1862 {
1863     if (enable)
1864         infoPtr->dwStyle &= ~WS_DISABLED;
1865     else
1866         infoPtr->dwStyle |= WS_DISABLED;
1867
1868     InvalidateRect(infoPtr->hwndSelf, &infoPtr->rcThumb, TRUE);
1869
1870     return 1;
1871 }
1872
1873 static LRESULT WINAPI
1874 TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1875 {
1876     TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);
1877
1878     TRACE("hwnd=%p msg=%x wparam=%lx lparam=%lx\n", hwnd, uMsg, wParam, lParam);
1879
1880     if (!infoPtr && (uMsg != WM_CREATE))
1881         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1882
1883     switch (uMsg)
1884     {
1885     case TBM_CLEARSEL:
1886         return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);
1887
1888     case TBM_CLEARTICS:
1889         return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);
1890
1891     case TBM_GETBUDDY:
1892         return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);
1893
1894     case TBM_GETCHANNELRECT:
1895         return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);
1896
1897     case TBM_GETLINESIZE:
1898         return infoPtr->lLineSize;
1899
1900     case TBM_GETNUMTICS:
1901         return TRACKBAR_GetNumTics (infoPtr);
1902
1903     case TBM_GETPAGESIZE:
1904         return infoPtr->lPageSize;
1905
1906     case TBM_GETPOS:
1907         return infoPtr->lPos;
1908
1909     case TBM_GETPTICS:
1910         return (LRESULT)infoPtr->tics;
1911
1912     case TBM_GETRANGEMAX:
1913         return infoPtr->lRangeMax;
1914
1915     case TBM_GETRANGEMIN:
1916         return infoPtr->lRangeMin;
1917
1918     case TBM_GETSELEND:
1919         return infoPtr->lSelMax;
1920
1921     case TBM_GETSELSTART:
1922         return infoPtr->lSelMin;
1923
1924     case TBM_GETTHUMBLENGTH:
1925         return infoPtr->uThumbLen;
1926
1927     case TBM_GETTHUMBRECT:
1928         return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);
1929
1930     case TBM_GETTIC:
1931         return TRACKBAR_GetTic (infoPtr, (INT)wParam);
1932
1933     case TBM_GETTICPOS:
1934         return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);
1935
1936     case TBM_GETTOOLTIPS:
1937         return (LRESULT)infoPtr->hwndToolTip;
1938
1939     case TBM_GETUNICODEFORMAT:
1940         return infoPtr->bUnicode;
1941
1942     case TBM_SETBUDDY:
1943         return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);
1944
1945     case TBM_SETLINESIZE:
1946         return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);
1947
1948     case TBM_SETPAGESIZE:
1949         return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);
1950
1951     case TBM_SETPOS:
1952         return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);
1953
1954     case TBM_SETRANGE:
1955         return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);
1956
1957     case TBM_SETRANGEMAX:
1958         return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);
1959
1960     case TBM_SETRANGEMIN:
1961         return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);
1962
1963     case TBM_SETSEL:
1964         return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);
1965
1966     case TBM_SETSELEND:
1967         return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);
1968
1969     case TBM_SETSELSTART:
1970         return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);
1971
1972     case TBM_SETTHUMBLENGTH:
1973         return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);
1974
1975     case TBM_SETTIC:
1976         return TRACKBAR_SetTic (infoPtr, (LONG)lParam);
1977
1978     case TBM_SETTICFREQ:
1979         return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);
1980
1981     case TBM_SETTIPSIDE:
1982         return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);
1983
1984     case TBM_SETTOOLTIPS:
1985         return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);
1986
1987     case TBM_SETUNICODEFORMAT:
1988         return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);
1989
1990
1991     case WM_CAPTURECHANGED:
1992         if (hwnd == (HWND)lParam) return 0;
1993         return TRACKBAR_CaptureChanged (infoPtr);
1994
1995     case WM_CREATE:
1996         return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);
1997
1998     case WM_DESTROY:
1999         return TRACKBAR_Destroy (infoPtr);
2000
2001     case WM_ENABLE:
2002         return TRACKBAR_Enable (infoPtr, (BOOL)wParam);
2003
2004     case WM_ERASEBKGND:
2005         return 0;
2006
2007     case WM_GETDLGCODE:
2008         return DLGC_WANTARROWS;
2009
2010     case WM_KEYDOWN:
2011         return TRACKBAR_KeyDown (infoPtr, (INT)wParam);
2012
2013     case WM_KEYUP:
2014         return TRACKBAR_KeyUp (infoPtr, (INT)wParam);
2015
2016     case WM_KILLFOCUS:
2017         return TRACKBAR_KillFocus (infoPtr);
2018
2019     case WM_LBUTTONDOWN:
2020         return TRACKBAR_LButtonDown (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2021
2022     case WM_LBUTTONUP:
2023         return TRACKBAR_LButtonUp (infoPtr);
2024
2025     case WM_MOUSELEAVE:
2026         infoPtr->flags &= ~TB_THUMB_HOT;
2027         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
2028         return 0;
2029
2030     case WM_MOUSEMOVE:
2031         return TRACKBAR_MouseMove (infoPtr, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
2032
2033     case WM_PRINTCLIENT:
2034     case WM_PAINT:
2035         return TRACKBAR_Paint (infoPtr, (HDC)wParam);
2036
2037     case WM_SETFOCUS:
2038         return TRACKBAR_SetFocus (infoPtr);
2039
2040     case WM_SIZE:
2041         return TRACKBAR_Size (infoPtr);
2042
2043     case WM_STYLECHANGED:
2044         return TRACKBAR_StyleChanged (infoPtr, wParam, (LPSTYLESTRUCT)lParam);
2045
2046     case WM_THEMECHANGED:
2047         return theme_changed (infoPtr);
2048
2049     case WM_TIMER:
2050         return TRACKBAR_Timer (infoPtr);
2051
2052     case WM_WININICHANGE:
2053         return TRACKBAR_InitializeThumb (infoPtr);
2054
2055     default:
2056         if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
2057             ERR("unknown msg %04x wp=%08lx lp=%08lx\n", uMsg, wParam, lParam);
2058         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
2059     }
2060 }
2061
2062
2063 void TRACKBAR_Register (void)
2064 {
2065     WNDCLASSW wndClass;
2066
2067     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
2068     wndClass.style         = CS_GLOBALCLASS;
2069     wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
2070     wndClass.cbClsExtra    = 0;
2071     wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
2072     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
2073     wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
2074     wndClass.lpszClassName = TRACKBAR_CLASSW;
2075
2076     RegisterClassW (&wndClass);
2077 }
2078
2079
2080 void TRACKBAR_Unregister (void)
2081 {
2082     UnregisterClassW (TRACKBAR_CLASSW, NULL);
2083 }