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Made sleep_on usable from all requests.
[wine/multimedia.git] / controls / scroll.c
blob901873f7a088f4cca8d0a94d6336c29476177fbb
1 /*
2 * Scrollbar control
3 *
4 * Copyright 1993 Martin Ayotte
5 * Copyright 1994, 1996 Alexandre Julliard
6 */
7
8 #include "wine/winuser16.h"
9 #include "scroll.h"
10 #include "heap.h"
11 #include "win.h"
12 #include "debugtools.h"
13 #include "cache.h"
14 #include "tweak.h"
15
16 DEFAULT_DEBUG_CHANNEL(scroll)
17
18
19 static HBITMAP hUpArrow = 0;
20 static HBITMAP hDnArrow = 0;
21 static HBITMAP hLfArrow = 0;
22 static HBITMAP hRgArrow = 0;
23 static HBITMAP hUpArrowD = 0;
24 static HBITMAP hDnArrowD = 0;
25 static HBITMAP hLfArrowD = 0;
26 static HBITMAP hRgArrowD = 0;
27 static HBITMAP hUpArrowI = 0;
28 static HBITMAP hDnArrowI = 0;
29 static HBITMAP hLfArrowI = 0;
30 static HBITMAP hRgArrowI = 0;
31
32 #define TOP_ARROW(flags,pressed) \
33 (((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
34 #define BOTTOM_ARROW(flags,pressed) \
35 (((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
36 #define LEFT_ARROW(flags,pressed) \
37 (((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
38 #define RIGHT_ARROW(flags,pressed) \
39 (((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
40
41
42 /* Minimum size of the rectangle between the arrows */
43 #define SCROLL_MIN_RECT 4
44
45 /* Minimum size of the thumb in pixels */
46 #define SCROLL_MIN_THUMB 6
47
48 /* Overlap between arrows and thumb */
49 #define SCROLL_ARROW_THUMB_OVERLAP ((TWEAK_WineLook == WIN31_LOOK) ? 1 : 0)
50
51 /* Delay (in ms) before first repetition when holding the button down */
52 #define SCROLL_FIRST_DELAY 200
53
54 /* Delay (in ms) between scroll repetitions */
55 #define SCROLL_REPEAT_DELAY 50
56
57 /* Scroll timer id */
58 #define SCROLL_TIMER 0
59
60 /* Scroll-bar hit testing */
61 enum SCROLL_HITTEST
62 {
63 SCROLL_NOWHERE, /* Outside the scroll bar */
64 SCROLL_TOP_ARROW, /* Top or left arrow */
65 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
66 SCROLL_THUMB, /* Thumb rectangle */
67 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
68 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
69 };
70
71 /* What to do after SCROLL_SetScrollInfo() */
72 #define SA_SSI_HIDE 0x0001
73 #define SA_SSI_SHOW 0x0002
74 #define SA_SSI_REFRESH 0x0004
75 #define SA_SSI_REPAINT_ARROWS 0x0008
76
77 /* Thumb-tracking info */
78 static HWND SCROLL_TrackingWin = 0;
79 static INT SCROLL_TrackingBar = 0;
80 static INT SCROLL_TrackingPos = 0;
81 static INT SCROLL_TrackingVal = 0;
82 /* Hit test code of the last button-down event */
83 static enum SCROLL_HITTEST SCROLL_trackHitTest;
84 static BOOL SCROLL_trackVertical;
85
86 /* Is the moving thumb being displayed? */
87 static BOOL SCROLL_MovingThumb = FALSE;
88
89 /* Local functions */
90 static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
91 BOOL fShowH, BOOL fShowV );
92 static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
93 const SCROLLINFO *info, INT *action );
94 static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
95 RECT *rect, INT arrowSize,
96 INT thumbSize, INT thumbPos,
97 UINT flags, BOOL vertical,
98 BOOL top_selected, BOOL bottom_selected );
99
100
101 /***********************************************************************
102 * SCROLL_LoadBitmaps
103 */
104 static void SCROLL_LoadBitmaps(void)
105 {
106 hUpArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROW) );
107 hDnArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROW) );
108 hLfArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROW) );
109 hRgArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROW) );
110 hUpArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWD) );
111 hDnArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWD) );
112 hLfArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWD) );
113 hRgArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWD) );
114 hUpArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWI) );
115 hDnArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWI) );
116 hLfArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWI) );
117 hRgArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWI) );
118 }
119
120
121 /***********************************************************************
122 * SCROLL_GetPtrScrollInfo
123 */
124 static SCROLLBAR_INFO *SCROLL_GetPtrScrollInfo( WND* wndPtr, INT nBar )
125 {
126 SCROLLBAR_INFO *infoPtr;
127
128 if (!wndPtr) return NULL;
129 switch(nBar)
130 {
131 case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break;
132 case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break;
133 case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break;
134 default: return NULL;
135 }
136
137 if (!infoPtr) /* Create the info structure if needed */
138 {
139 if ((infoPtr = HeapAlloc( SystemHeap, 0, sizeof(SCROLLBAR_INFO) )))
140 {
141 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
142 infoPtr->MaxVal = 100;
143 infoPtr->flags = ESB_ENABLE_BOTH;
144 if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
145 else wndPtr->pVScroll = infoPtr;
146 }
147 if (!hUpArrow) SCROLL_LoadBitmaps();
148 }
149 return infoPtr;
150 }
151
152
153 /***********************************************************************
154 * SCROLL_GetScrollInfo
155 */
156 static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND hwnd, INT nBar )
157 {
158 SCROLLBAR_INFO *retvalue;
159 WND *wndPtr = WIN_FindWndPtr( hwnd );
160 retvalue = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
161 WIN_ReleaseWndPtr(wndPtr);
162 return retvalue;
163 }
164
165
166 /***********************************************************************
167 * SCROLL_GetScrollBarRect
168 *
169 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
170 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
171 * 'arrowSize' returns the width or height of an arrow (depending on
172 * the orientation of the scrollbar), 'thumbSize' returns the size of
173 * the thumb, and 'thumbPos' returns the position of the thumb
174 * relative to the left or to the top.
175 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
176 */
177 static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
178 INT *arrowSize, INT *thumbSize,
179 INT *thumbPos )
180 {
181 INT pixels;
182 BOOL vertical;
183 WND *wndPtr = WIN_FindWndPtr( hwnd );
184
185 switch(nBar)
186 {
187 case SB_HORZ:
188 lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left;
189 lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
190 lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left;
191 lprect->bottom = lprect->top + GetSystemMetrics(SM_CYHSCROLL);
192 if(wndPtr->dwStyle & WS_BORDER) {
193 lprect->left--;
194 lprect->right++;
195 } else if(wndPtr->dwStyle & WS_VSCROLL)
196 lprect->right++;
197 vertical = FALSE;
198 break;
199
200 case SB_VERT:
201 lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
202 lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top;
203 lprect->right = lprect->left + GetSystemMetrics(SM_CXVSCROLL);
204 lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
205 if(wndPtr->dwStyle & WS_BORDER) {
206 lprect->top--;
207 lprect->bottom++;
208 } else if(wndPtr->dwStyle & WS_HSCROLL)
209 lprect->bottom++;
210 vertical = TRUE;
211 break;
212
213 case SB_CTL:
214 GetClientRect( hwnd, lprect );
215 vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
216 break;
217
218 default:
219 WIN_ReleaseWndPtr(wndPtr);
220 return FALSE;
221 }
222
223 if (vertical) pixels = lprect->bottom - lprect->top;
224 else pixels = lprect->right - lprect->left;
225
226 if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
227 {
228 if (pixels > SCROLL_MIN_RECT)
229 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
230 else
231 *arrowSize = 0;
232 *thumbPos = *thumbSize = 0;
233 }
234 else
235 {
236 SCROLLBAR_INFO *info = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
237
238 *arrowSize = GetSystemMetrics(SM_CXVSCROLL);
239 pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
240
241 if (info->Page)
242 {
243 *thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
244 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
245 }
246 else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
247
248 if (((pixels -= *thumbSize ) < 0) ||
249 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
250 {
251 /* Rectangle too small or scrollbar disabled -> no thumb */
252 *thumbPos = *thumbSize = 0;
253 }
254 else
255 {
256 INT max = info->MaxVal - MAX( info->Page-1, 0 );
257 if (info->MinVal >= max)
258 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
259 else
260 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
261 + pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
262 }
263 }
264 WIN_ReleaseWndPtr(wndPtr);
265 return vertical;
266 }
267
268
269 /***********************************************************************
270 * SCROLL_GetThumbVal
271 *
272 * Compute the current scroll position based on the thumb position in pixels
273 * from the top of the scroll-bar.
274 */
275 static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
276 BOOL vertical, INT pos )
277 {
278 INT thumbSize;
279 INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
280
281 if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
282 return infoPtr->MinVal;
283
284 if (infoPtr->Page)
285 {
286 thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
287 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
288 }
289 else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
290
291 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
292
293 pos = MAX( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
294 if (pos > pixels) pos = pixels;
295
296 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
297 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
298 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
299 }
300
301 /***********************************************************************
302 * SCROLL_PtInRectEx
303 */
304 static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
305 {
306 RECT rect = *lpRect;
307
308 if (vertical)
309 {
310 rect.left -= lpRect->right - lpRect->left;
311 rect.right += lpRect->right - lpRect->left;
312 }
313 else
314 {
315 rect.top -= lpRect->bottom - lpRect->top;
316 rect.bottom += lpRect->bottom - lpRect->top;
317 }
318 return PtInRect( &rect, pt );
319 }
320
321 /***********************************************************************
322 * SCROLL_ClipPos
323 */
324 static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
325 {
326 if( pt.x < lpRect->left )
327 pt.x = lpRect->left;
328 else
329 if( pt.x > lpRect->right )
330 pt.x = lpRect->right;
331
332 if( pt.y < lpRect->top )
333 pt.y = lpRect->top;
334 else
335 if( pt.y > lpRect->bottom )
336 pt.y = lpRect->bottom;
337
338 return pt;
339 }
340
341
342 /***********************************************************************
343 * SCROLL_HitTest
344 *
345 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
346 */
347 static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
348 POINT pt, BOOL bDragging )
349 {
350 INT arrowSize, thumbSize, thumbPos;
351 RECT rect;
352
353 BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
354 &arrowSize, &thumbSize, &thumbPos );
355
356 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
357 (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
358
359 if (vertical)
360 {
361 if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW;
362 if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
363 if (!thumbPos) return SCROLL_TOP_RECT;
364 pt.y -= rect.top;
365 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
366 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
367 }
368 else /* horizontal */
369 {
370 if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW;
371 if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
372 if (!thumbPos) return SCROLL_TOP_RECT;
373 pt.x -= rect.left;
374 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
375 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
376 }
377 return SCROLL_THUMB;
378 }
379
380
381 /***********************************************************************
382 * SCROLL_DrawArrows
383 *
384 * Draw the scroll bar arrows.
385 */
386 static void SCROLL_DrawArrows_9x( HDC hdc, SCROLLBAR_INFO *infoPtr,
387 RECT *rect, INT arrowSize, BOOL vertical,
388 BOOL top_pressed, BOOL bottom_pressed )
389 {
390 RECT r;
391
392 r = *rect;
393 if( vertical )
394 r.bottom = r.top + arrowSize;
395 else
396 r.right = r.left + arrowSize;
397
398 DrawFrameControl( hdc, &r, DFC_SCROLL,
399 (vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT)
400 | (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
401 | (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) );
402
403 r = *rect;
404 if( vertical )
405 r.top = r.bottom-arrowSize;
406 else
407 r.left = r.right-arrowSize;
408
409 DrawFrameControl( hdc, &r, DFC_SCROLL,
410 (vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT)
411 | (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
412 | (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) );
413 }
414
415 static void SCROLL_DrawArrows_31( HDC hdc, SCROLLBAR_INFO *infoPtr,
416 RECT *rect, INT arrowSize, BOOL vertical,
417 BOOL top_pressed, BOOL bottom_pressed )
418 {
419 HDC hdcMem = CreateCompatibleDC( hdc );
420 HBITMAP hbmpPrev = SelectObject( hdcMem, vertical ?
421 TOP_ARROW(infoPtr->flags, top_pressed)
422 : LEFT_ARROW(infoPtr->flags, top_pressed));
423
424 SetStretchBltMode( hdc, STRETCH_DELETESCANS );
425 StretchBlt( hdc, rect->left, rect->top,
426 vertical ? rect->right-rect->left : arrowSize,
427 vertical ? arrowSize : rect->bottom-rect->top,
428 hdcMem, 0, 0,
429 GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
430 SRCCOPY );
431
432 SelectObject( hdcMem, vertical ?
433 BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
434 : RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
435 if (vertical)
436 StretchBlt( hdc, rect->left, rect->bottom - arrowSize,
437 rect->right - rect->left, arrowSize,
438 hdcMem, 0, 0,
439 GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
440 SRCCOPY );
441 else
442 StretchBlt( hdc, rect->right - arrowSize, rect->top,
443 arrowSize, rect->bottom - rect->top,
444 hdcMem, 0, 0,
445 GetSystemMetrics(SM_CXVSCROLL), GetSystemMetrics(SM_CYHSCROLL),
446 SRCCOPY );
447 SelectObject( hdcMem, hbmpPrev );
448 DeleteDC( hdcMem );
449 }
450
451 static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
452 RECT *rect, INT arrowSize, BOOL vertical,
453 BOOL top_pressed, BOOL bottom_pressed )
454 {
455 if( TWEAK_WineLook == WIN31_LOOK )
456 SCROLL_DrawArrows_31( hdc, infoPtr, rect, arrowSize,
457 vertical, top_pressed,bottom_pressed );
458 else
459 SCROLL_DrawArrows_9x( hdc, infoPtr, rect, arrowSize,
460 vertical, top_pressed,bottom_pressed );
461 }
462
463
464 /***********************************************************************
465 * SCROLL_DrawMovingThumb
466 *
467 * Draw the moving thumb rectangle.
468 */
469 static void SCROLL_DrawMovingThumb_31( HDC hdc, RECT *rect, BOOL vertical,
470 INT arrowSize, INT thumbSize )
471 {
472 RECT r = *rect;
473 if (vertical)
474 {
475 r.top += SCROLL_TrackingPos;
476 if (r.top < rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
477 r.top = rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
478 if (r.top + thumbSize >
479 rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
480 r.top = rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
481 - thumbSize;
482 r.bottom = r.top + thumbSize;
483 }
484 else
485 {
486 r.left += SCROLL_TrackingPos;
487 if (r.left < rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
488 r.left = rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
489 if (r.left + thumbSize >
490 rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
491 r.left = rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
492 - thumbSize;
493 r.right = r.left + thumbSize;
494 }
495
496 DrawFocusRect( hdc, &r );
497 SCROLL_MovingThumb = !SCROLL_MovingThumb;
498 }
499
500 static void SCROLL_DrawMovingThumb_9x( HDC hdc, RECT *rect, BOOL vertical,
501 INT arrowSize, INT thumbSize )
502 {
503 INT pos = SCROLL_TrackingPos;
504 INT max_size;
505
506 if( vertical )
507 max_size = rect->bottom - rect->top;
508 else
509 max_size = rect->right - rect->left;
510
511 max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize;
512
513 if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) )
514 pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP);
515 else if( pos > max_size )
516 pos = max_size;
517
518 SCROLL_DrawInterior_9x( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar,
519 rect, arrowSize, thumbSize, pos,
520 0, vertical, FALSE, FALSE );
521
522 SCROLL_MovingThumb = !SCROLL_MovingThumb;
523 }
524
525 static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
526 INT arrowSize, INT thumbSize )
527 {
528 if( TWEAK_WineLook == WIN31_LOOK )
529 SCROLL_DrawMovingThumb_31( hdc, rect, vertical, arrowSize, thumbSize );
530 else
531 SCROLL_DrawMovingThumb_9x( hdc, rect, vertical, arrowSize, thumbSize );
532 }
533
534 /***********************************************************************
535 * SCROLL_DrawInterior
536 *
537 * Draw the scroll bar interior (everything except the arrows).
538 */
539 static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
540 RECT *rect, INT arrowSize,
541 INT thumbSize, INT thumbPos,
542 UINT flags, BOOL vertical,
543 BOOL top_selected, BOOL bottom_selected )
544 {
545 RECT r;
546 HPEN hSavePen;
547 HBRUSH hSaveBrush,hBrush;
548
549 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
550 * The window-owned scrollbars need to call DEFWND_ControlColor
551 * to correctly setup default scrollbar colors
552 */
553 if (nBar == SB_CTL)
554 {
555 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
556 (WPARAM)hdc,(LPARAM)hwnd);
557 }
558 else
559 {
560 hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
561 }
562
563 hSavePen = SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
564 hSaveBrush = SelectObject( hdc, hBrush );
565
566 /* Calculate the scroll rectangle */
567 r = *rect;
568 if (vertical)
569 {
570 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
571 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
572 }
573 else
574 {
575 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
576 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
577 }
578
579 /* Draw the scroll rectangles and thumb */
580 if (!thumbPos) /* No thumb to draw */
581 {
582 PatBlt( hdc, r.left, r.top,
583 r.right - r.left, r.bottom - r.top,
584 PATCOPY );
585
586 /* cleanup and return */
587 SelectObject( hdc, hSavePen );
588 SelectObject( hdc, hSaveBrush );
589 return;
590 }
591
592 if (vertical)
593 {
594 PatBlt( hdc, r.left, r.top,
595 r.right - r.left,
596 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
597 top_selected ? 0x0f0000 : PATCOPY );
598 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
599 PatBlt( hdc, r.left, r.top + thumbSize,
600 r.right - r.left,
601 r.bottom - r.top - thumbSize,
602 bottom_selected ? 0x0f0000 : PATCOPY );
603 r.bottom = r.top + thumbSize;
604 }
605 else /* horizontal */
606 {
607 PatBlt( hdc, r.left, r.top,
608 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
609 r.bottom - r.top,
610 top_selected ? 0x0f0000 : PATCOPY );
611 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
612 PatBlt( hdc, r.left + thumbSize, r.top,
613 r.right - r.left - thumbSize,
614 r.bottom - r.top,
615 bottom_selected ? 0x0f0000 : PATCOPY );
616 r.right = r.left + thumbSize;
617 }
618
619 /* Draw the thumb */
620 DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT | BF_MIDDLE );
621
622 /* cleanup */
623 SelectObject( hdc, hSavePen );
624 SelectObject( hdc, hSaveBrush );
625 }
626
627
628 static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
629 RECT *rect, INT arrowSize,
630 INT thumbSize, INT thumbPos,
631 UINT flags, BOOL vertical,
632 BOOL top_selected, BOOL bottom_selected )
633 {
634 RECT r;
635 HPEN hSavePen;
636 HBRUSH hSaveBrush,hBrush;
637 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
638
639 if (Save_SCROLL_MovingThumb &&
640 (SCROLL_TrackingWin == hwnd) &&
641 (SCROLL_TrackingBar == nBar))
642 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
643
644 /* Select the correct brush and pen */
645
646 if (TWEAK_WineLook == WIN31_LOOK && (flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
647 {
648 /* This ought to be the color of the parent window */
649 if (TWEAK_WineLook == WIN31_LOOK) {
650 hBrush = GetSysColorBrush(COLOR_WINDOW);
651 } else {
652 /* Under Win9x look & feel, scrollbars don't have a solid border.
653 * To make scrollbar's background different from the window
654 * background, we need to apply a gray 0x55aa pattern brush.
655 * Otherwise it won't look good.
656 */
657 hBrush = CACHE_GetPattern55AABrush();
658 }
659 }
660 else
661 {
662 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
663 * The window-owned scrollbars need to call DEFWND_ControlColor
664 * to correctly setup default scrollbar colors
665 */
666 if (nBar == SB_CTL) {
667 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
668 (WPARAM)hdc,(LPARAM)hwnd);
669 } else {
670 hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
671 }
672 }
673 hSavePen = SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
674 hSaveBrush = SelectObject( hdc, hBrush );
675
676 /* Calculate the scroll rectangle */
677
678 r = *rect;
679 if (vertical)
680 {
681 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
682 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
683 }
684 else
685 {
686 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
687 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
688 }
689
690 /* Draw the scroll bar frame */
691
692 /* Only draw outline if Win 3.1. Mar 24, 1999 - Ronald B. Cemer */
693 if (TWEAK_WineLook == WIN31_LOOK)
694 Rectangle( hdc, r.left, r.top, r.right, r.bottom );
695
696 /* Draw the scroll rectangles and thumb */
697
698 if (!thumbPos) /* No thumb to draw */
699 {
700 INT offset = (TWEAK_WineLook > WIN31_LOOK) ? 0 : 1;
701
702 PatBlt( hdc, r.left+offset, r.top+offset,
703 r.right - r.left - 2*offset, r.bottom - r.top - 2*offset,
704 PATCOPY );
705
706 /* cleanup and return */
707 SelectObject( hdc, hSavePen );
708 SelectObject( hdc, hSaveBrush );
709 return;
710 }
711
712 if (vertical)
713 {
714 INT offset = (TWEAK_WineLook == WIN31_LOOK) ? 1 : 0;
715
716 PatBlt( hdc, r.left + offset, r.top + offset,
717 r.right - r.left - offset*2,
718 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - offset,
719 top_selected ? 0x0f0000 : PATCOPY );
720 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
721 PatBlt( hdc, r.left + offset, r.top + thumbSize,
722 r.right - r.left - offset*2,
723 r.bottom - r.top - thumbSize - offset,
724 bottom_selected ? 0x0f0000 : PATCOPY );
725 r.bottom = r.top + thumbSize;
726 }
727 else /* horizontal */
728 {
729 INT offset = (TWEAK_WineLook == WIN31_LOOK) ? 1 : 0;
730
731 PatBlt( hdc, r.left + offset, r.top + offset,
732 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
733 r.bottom - r.top - offset*2,
734 top_selected ? 0x0f0000 : PATCOPY );
735 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
736 PatBlt( hdc, r.left + thumbSize, r.top + offset,
737 r.right - r.left - thumbSize - offset,
738 r.bottom - r.top - offset*2,
739 bottom_selected ? 0x0f0000 : PATCOPY );
740 r.right = r.left + thumbSize;
741 }
742
743 /* Draw the thumb */
744
745 SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
746 if (TWEAK_WineLook == WIN31_LOOK)
747 {
748 Rectangle( hdc, r.left, r.top, r.right, r.bottom );
749 r.top++, r.left++;
750 }
751 else
752 {
753 Rectangle( hdc, r.left+1, r.top+1, r.right-1, r.bottom-1 );
754 }
755 DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
756
757 if (Save_SCROLL_MovingThumb &&
758 (SCROLL_TrackingWin == hwnd) &&
759 (SCROLL_TrackingBar == nBar))
760 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
761
762 /* cleanup */
763 SelectObject( hdc, hSavePen );
764 SelectObject( hdc, hSaveBrush );
765 }
766
767
768 /***********************************************************************
769 * SCROLL_DrawScrollBar
770 *
771 * Redraw the whole scrollbar.
772 */
773 void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
774 BOOL arrows, BOOL interior )
775 {
776 INT arrowSize, thumbSize, thumbPos;
777 RECT rect;
778 BOOL vertical;
779 WND *wndPtr = WIN_FindWndPtr( hwnd );
780 SCROLLBAR_INFO *infoPtr = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
781 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
782
783 if (!wndPtr || !infoPtr ||
784 ((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
785 ((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) goto END;
786 if (!WIN_IsWindowDrawable( wndPtr, FALSE )) goto END;
787
788 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
789 &arrowSize, &thumbSize, &thumbPos );
790
791 if (Save_SCROLL_MovingThumb &&
792 (SCROLL_TrackingWin == hwnd) &&
793 (SCROLL_TrackingBar == nBar))
794 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
795
796 /* Draw the arrows */
797
798 if (arrows && arrowSize)
799 {
800 if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
801 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
802 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
803 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
804 else
805 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
806 FALSE, FALSE );
807 }
808 if( interior )
809 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
810 thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
811
812 if (Save_SCROLL_MovingThumb &&
813 (SCROLL_TrackingWin == hwnd) &&
814 (SCROLL_TrackingBar == nBar))
815 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
816
817 END:
818 WIN_ReleaseWndPtr(wndPtr);
819 }
820
821
822 /***********************************************************************
823 * SCROLL_RefreshScrollBar
824 *
825 * Repaint the scroll bar interior after a SetScrollRange() or
826 * SetScrollPos() call.
827 */
828 static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
829 BOOL arrows, BOOL interior )
830 {
831 HDC hdc = GetDCEx( hwnd, 0,
832 DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
833 if (!hdc) return;
834
835 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
836 ReleaseDC( hwnd, hdc );
837 }
838
839
840 /***********************************************************************
841 * SCROLL_HandleKbdEvent
842 *
843 * Handle a keyboard event (only for SB_CTL scrollbars).
844 */
845 static void SCROLL_HandleKbdEvent( HWND hwnd, WPARAM wParam )
846 {
847 WND *wndPtr = WIN_FindWndPtr( hwnd );
848 WPARAM msg;
849
850 switch(wParam)
851 {
852 case VK_PRIOR: msg = SB_PAGEUP; break;
853 case VK_NEXT: msg = SB_PAGEDOWN; break;
854 case VK_HOME: msg = SB_TOP; break;
855 case VK_END: msg = SB_BOTTOM; break;
856 case VK_UP: msg = SB_LINEUP; break;
857 case VK_DOWN: msg = SB_LINEDOWN; break;
858 default:
859 WIN_ReleaseWndPtr(wndPtr);
860 return;
861 }
862 SendMessageA( GetParent(hwnd),
863 (wndPtr->dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
864 msg, hwnd );
865 WIN_ReleaseWndPtr(wndPtr);
866 }
867
868
869 /***********************************************************************
870 * SCROLL_HandleScrollEvent
871 *
872 * Handle a mouse or timer event for the scrollbar.
873 * 'pt' is the location of the mouse event in client (for SB_CTL) or
874 * windows coordinates.
875 */
876 void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt)
877 {
878 /* Previous mouse position for timer events */
879 static POINT prevPt;
880 /* Thumb position when tracking started. */
881 static UINT trackThumbPos;
882 /* Position in the scroll-bar of the last button-down event. */
883 static INT lastClickPos;
884 /* Position in the scroll-bar of the last mouse event. */
885 static INT lastMousePos;
886
887 enum SCROLL_HITTEST hittest;
888 HWND hwndOwner, hwndCtl;
889 BOOL vertical;
890 INT arrowSize, thumbSize, thumbPos;
891 RECT rect;
892 HDC hdc;
893
894 SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
895 if (!infoPtr) return;
896 if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
897 return;
898
899 hdc = GetDCEx( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
900 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
901 &arrowSize, &thumbSize, &thumbPos );
902 hwndOwner = (nBar == SB_CTL) ? GetParent(hwnd) : hwnd;
903 hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
904
905 switch(msg)
906 {
907 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
908 SCROLL_trackVertical = vertical;
909 SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
910 lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
911 lastMousePos = lastClickPos;
912 trackThumbPos = thumbPos;
913 prevPt = pt;
914 SetCapture( hwnd );
915 if (nBar == SB_CTL) SetFocus( hwnd );
916 break;
917
918 case WM_MOUSEMOVE:
919 hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
920 prevPt = pt;
921 break;
922
923 case WM_LBUTTONUP:
924 hittest = SCROLL_NOWHERE;
925 ReleaseCapture();
926 break;
927
928 case WM_SYSTIMER:
929 pt = prevPt;
930 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
931 break;
932
933 default:
934 return; /* Should never happen */
935 }
936
937 TRACE("Event: hwnd=%04x bar=%d msg=%x pt=%ld,%ld hit=%d\n",
938 hwnd, nBar, msg, pt.x, pt.y, hittest );
939
940 switch(SCROLL_trackHitTest)
941 {
942 case SCROLL_NOWHERE: /* No tracking in progress */
943 break;
944
945 case SCROLL_TOP_ARROW:
946 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
947 (hittest == SCROLL_trackHitTest), FALSE );
948 if (hittest == SCROLL_trackHitTest)
949 {
950 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
951 {
952 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
953 SB_LINEUP, hwndCtl );
954 }
955
956 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
957 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
958 (TIMERPROC)0 );
959 }
960 else KillSystemTimer( hwnd, SCROLL_TIMER );
961 break;
962
963 case SCROLL_TOP_RECT:
964 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
965 thumbPos, infoPtr->flags, vertical,
966 (hittest == SCROLL_trackHitTest), FALSE );
967 if (hittest == SCROLL_trackHitTest)
968 {
969 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
970 {
971 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
972 SB_PAGEUP, hwndCtl );
973 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
974 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
975 (TIMERPROC)0 );
976 }
977 }
978 else KillSystemTimer( hwnd, SCROLL_TIMER );
979 break;
980
981 case SCROLL_THUMB:
982 if (msg == WM_LBUTTONDOWN)
983 {
984 SCROLL_TrackingWin = hwnd;
985 SCROLL_TrackingBar = nBar;
986 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
987 if (!SCROLL_MovingThumb)
988 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
989 }
990 else if (msg == WM_LBUTTONUP)
991 {
992 if (SCROLL_MovingThumb)
993 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
994 SCROLL_TrackingWin = 0;
995 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
996 thumbPos, infoPtr->flags, vertical,
997 FALSE, FALSE );
998 }
999 else /* WM_MOUSEMOVE */
1000 {
1001 UINT pos;
1002
1003 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
1004 else
1005 {
1006 pt = SCROLL_ClipPos( &rect, pt );
1007 pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
1008 }
1009 if ( (pos != lastMousePos) || (!SCROLL_MovingThumb) )
1010 {
1011 if (SCROLL_MovingThumb)
1012 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
1013 arrowSize, thumbSize );
1014 lastMousePos = pos;
1015 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
1016 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
1017 vertical,
1018 SCROLL_TrackingPos );
1019 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1020 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
1021 hwndCtl );
1022 if (!SCROLL_MovingThumb)
1023 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
1024 arrowSize, thumbSize );
1025 }
1026 }
1027 break;
1028
1029 case SCROLL_BOTTOM_RECT:
1030 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
1031 thumbPos, infoPtr->flags, vertical,
1032 FALSE, (hittest == SCROLL_trackHitTest) );
1033 if (hittest == SCROLL_trackHitTest)
1034 {
1035 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
1036 {
1037 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1038 SB_PAGEDOWN, hwndCtl );
1039 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1040 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1041 (TIMERPROC)0 );
1042 }
1043 }
1044 else KillSystemTimer( hwnd, SCROLL_TIMER );
1045 break;
1046
1047 case SCROLL_BOTTOM_ARROW:
1048 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
1049 FALSE, (hittest == SCROLL_trackHitTest) );
1050 if (hittest == SCROLL_trackHitTest)
1051 {
1052 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
1053 {
1054 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1055 SB_LINEDOWN, hwndCtl );
1056 }
1057
1058 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1059 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1060 (TIMERPROC)0 );
1061 }
1062 else KillSystemTimer( hwnd, SCROLL_TIMER );
1063 break;
1064 }
1065
1066 if (msg == WM_LBUTTONUP)
1067 {
1068 hittest = SCROLL_trackHitTest;
1069 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
1070
1071 if (hittest == SCROLL_THUMB)
1072 {
1073 UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
1074 trackThumbPos + lastMousePos - lastClickPos );
1075 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1076 MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
1077 }
1078 else
1079 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1080 SB_ENDSCROLL, hwndCtl );
1081 }
1082
1083 ReleaseDC( hwnd, hdc );
1084 }
1085
1086
1087 /***********************************************************************
1088 * ScrollBarWndProc
1089 */
1090 LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam,
1091 LPARAM lParam )
1092 {
1093 switch(message)
1094 {
1095 case WM_CREATE:
1096 {
1097 CREATESTRUCTA *lpCreat = (CREATESTRUCTA *)lParam;
1098 if (lpCreat->style & SBS_SIZEBOX)
1099 {
1100 FIXME("Unimplemented style SBS_SIZEBOX.\n" );
1101 return 0;
1102 }
1103
1104 if (lpCreat->style & SBS_VERT)
1105 {
1106 if (lpCreat->style & SBS_LEFTALIGN)
1107 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
1108 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
1109 else if (lpCreat->style & SBS_RIGHTALIGN)
1110 MoveWindow( hwnd,
1111 lpCreat->x+lpCreat->cx-GetSystemMetrics(SM_CXVSCROLL)-1,
1112 lpCreat->y,
1113 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
1114 }
1115 else /* SBS_HORZ */
1116 {
1117 if (lpCreat->style & SBS_TOPALIGN)
1118 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
1119 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
1120 else if (lpCreat->style & SBS_BOTTOMALIGN)
1121 MoveWindow( hwnd,
1122 lpCreat->x,
1123 lpCreat->y+lpCreat->cy-GetSystemMetrics(SM_CYHSCROLL)-1,
1124 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
1125 }
1126 }
1127 if (!hUpArrow) SCROLL_LoadBitmaps();
1128 TRACE("ScrollBar creation, hwnd=%04x\n", hwnd );
1129 return 0;
1130
1131 case WM_LBUTTONDOWN:
1132 case WM_LBUTTONUP:
1133 case WM_MOUSEMOVE:
1134 case WM_SYSTIMER:
1135 {
1136 POINT pt;
1137 CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
1138 SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
1139 }
1140 break;
1141
1142 case WM_KEYDOWN:
1143 SCROLL_HandleKbdEvent( hwnd, wParam );
1144 break;
1145
1146 case WM_ERASEBKGND:
1147 return 1;
1148
1149 case WM_GETDLGCODE:
1150 return DLGC_WANTARROWS; /* Windows returns this value */
1151
1152 case WM_PAINT:
1153 {
1154 PAINTSTRUCT ps;
1155 HDC hdc = BeginPaint( hwnd, &ps );
1156 SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
1157 EndPaint( hwnd, &ps );
1158 }
1159 break;
1160
1161 case SBM_SETPOS16:
1162 case SBM_SETPOS:
1163 return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
1164
1165 case SBM_GETPOS16:
1166 case SBM_GETPOS:
1167 return GetScrollPos( hwnd, SB_CTL );
1168
1169 case SBM_SETRANGE16:
1170 SetScrollRange( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam),
1171 wParam /* FIXME: Is this correct? */ );
1172 return 0;
1173
1174 case SBM_SETRANGE:
1175 SetScrollRange( hwnd, SB_CTL, wParam, lParam, FALSE );
1176 return 0; /* FIXME: return previous position */
1177
1178 case SBM_GETRANGE16:
1179 FIXME("don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam, lParam );
1180 return 0;
1181
1182 case SBM_GETRANGE:
1183 GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
1184 return 0;
1185
1186 case SBM_ENABLE_ARROWS16:
1187 case SBM_ENABLE_ARROWS:
1188 return EnableScrollBar( hwnd, SB_CTL, wParam );
1189
1190 case SBM_SETRANGEREDRAW:
1191 SetScrollRange( hwnd, SB_CTL, wParam, lParam, TRUE );
1192 return 0; /* FIXME: return previous position */
1193
1194 case SBM_SETSCROLLINFO:
1195 return SetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
1196
1197 case SBM_GETSCROLLINFO:
1198 return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
1199
1200 case 0x00e5:
1201 case 0x00e7:
1202 case 0x00e8:
1203 case 0x00eb:
1204 case 0x00ec:
1205 case 0x00ed:
1206 case 0x00ee:
1207 case 0x00ef:
1208 ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
1209 message, wParam, lParam );
1210 break;
1211
1212 default:
1213 if (message >= WM_USER)
1214 WARN("unknown msg %04x wp=%04x lp=%08lx\n",
1215 message, wParam, lParam );
1216 return DefWindowProcA( hwnd, message, wParam, lParam );
1217 }
1218 return 0;
1219 }
1220
1221
1222 /*************************************************************************
1223 * SetScrollInfo16 (USER.475)
1224 */
1225 INT16 WINAPI SetScrollInfo16( HWND16 hwnd, INT16 nBar, const SCROLLINFO *info,
1226 BOOL16 bRedraw )
1227 {
1228 return (INT16)SetScrollInfo( hwnd, nBar, info, bRedraw );
1229 }
1230
1231
1232 /*************************************************************************
1233 * SetScrollInfo32 (USER32.501)
1234 * SetScrollInfo32 can be used to set the position, upper bound,
1235 * lower bound, and page size of a scrollbar control.
1236 *
1237 * RETURNS
1238 * Scrollbar position
1239 *
1240 * NOTE
1241 * For 100 lines of text to be displayed in a window of 25 lines,
1242 * one would for instance use info->nMin=0, info->nMax=75
1243 * (corresponding to the 76 different positions of the window on
1244 * the text), and info->nPage=25.
1245 */
1246 INT WINAPI SetScrollInfo(
1247 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1248 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1249 const SCROLLINFO *info /* [I] Specifies what to change and new values */,
1250 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1251 {
1252 INT action;
1253 INT retVal = SCROLL_SetScrollInfo( hwnd, nBar, info, &action );
1254
1255 if( action & SA_SSI_HIDE )
1256 SCROLL_ShowScrollBar( hwnd, nBar, FALSE, FALSE );
1257 else
1258 {
1259 if( action & SA_SSI_SHOW )
1260 if( SCROLL_ShowScrollBar( hwnd, nBar, TRUE, TRUE ) )
1261 return retVal; /* SetWindowPos() already did the painting */
1262
1263 if( bRedraw && (action & SA_SSI_REFRESH))
1264 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1265 else if( action & SA_SSI_REPAINT_ARROWS )
1266 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE );
1267 }
1268 return retVal;
1269 }
1270
1271 INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
1272 const SCROLLINFO *info, INT *action )
1273 {
1274 /* Update the scrollbar state and set action flags according to
1275 * what has to be done graphics wise. */
1276
1277 SCROLLBAR_INFO *infoPtr;
1278 UINT new_flags;
1279
1280 *action = 0;
1281
1282 if (!(infoPtr = SCROLL_GetScrollInfo(hwnd, nBar))) return 0;
1283 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1284 if ((info->cbSize != sizeof(*info)) &&
1285 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1286
1287 if (TRACE_ON(scroll))
1288 {
1289 DPRINTF( "hwnd=%04x bar=%d", hwnd, nBar);
1290 if (info->fMask & SIF_PAGE) DPRINTF( " page=%d", info->nPage );
1291 if (info->fMask & SIF_POS) DPRINTF( " pos=%d", info->nPos );
1292 if (info->fMask & SIF_RANGE) DPRINTF( " min=%d max=%d", info->nMin, info->nMax );
1293 DPRINTF("\n");
1294 }
1295
1296 /* Set the page size */
1297
1298 if (info->fMask & SIF_PAGE)
1299 {
1300 if( infoPtr->Page != info->nPage )
1301 {
1302 infoPtr->Page = info->nPage;
1303 *action |= SA_SSI_REFRESH;
1304 }
1305 }
1306
1307 /* Set the scroll pos */
1308
1309 if (info->fMask & SIF_POS)
1310 {
1311 if( infoPtr->CurVal != info->nPos )
1312 {
1313 infoPtr->CurVal = info->nPos;
1314 *action |= SA_SSI_REFRESH;
1315 }
1316 }
1317
1318 /* Set the scroll range */
1319
1320 if (info->fMask & SIF_RANGE)
1321 {
1322 /* Invalid range -> range is set to (0,0) */
1323 if ((info->nMin > info->nMax) ||
1324 ((UINT)(info->nMax - info->nMin) >= 0x80000000))
1325 {
1326 infoPtr->MinVal = 0;
1327 infoPtr->MaxVal = 0;
1328 }
1329 else
1330 {
1331 if( infoPtr->MinVal != info->nMin ||
1332 infoPtr->MaxVal != info->nMax )
1333 {
1334 *action |= SA_SSI_REFRESH;
1335 infoPtr->MinVal = info->nMin;
1336 infoPtr->MaxVal = info->nMax;
1337 }
1338 }
1339 }
1340
1341 /* Make sure the page size is valid */
1342
1343 if (infoPtr->Page < 0) infoPtr->Page = 0;
1344 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1345 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1346
1347 /* Make sure the pos is inside the range */
1348
1349 if (infoPtr->CurVal < infoPtr->MinVal)
1350 infoPtr->CurVal = infoPtr->MinVal;
1351 else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1352 infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
1353
1354 TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1355 infoPtr->Page, infoPtr->CurVal,
1356 infoPtr->MinVal, infoPtr->MaxVal );
1357
1358 /* don't change the scrollbar state if SetScrollInfo
1359 * is just called with SIF_DISABLENOSCROLL
1360 */
1361 if(!(info->fMask & SIF_ALL)) goto done;
1362
1363 /* Check if the scrollbar should be hidden or disabled */
1364
1365 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1366 {
1367 new_flags = infoPtr->flags;
1368 if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1369 {
1370 /* Hide or disable scroll-bar */
1371 if (info->fMask & SIF_DISABLENOSCROLL)
1372 {
1373 new_flags = ESB_DISABLE_BOTH;
1374 *action |= SA_SSI_REFRESH;
1375 }
1376 else if (nBar != SB_CTL)
1377 {
1378 *action = SA_SSI_HIDE;
1379 goto done;
1380 }
1381 }
1382 else /* Show and enable scroll-bar */
1383 {
1384 new_flags = 0;
1385 if (nBar != SB_CTL)
1386 *action |= SA_SSI_SHOW;
1387 }
1388
1389 if (infoPtr->flags != new_flags) /* check arrow flags */
1390 {
1391 infoPtr->flags = new_flags;
1392 *action |= SA_SSI_REPAINT_ARROWS;
1393 }
1394 }
1395
1396 done:
1397 /* Return current position */
1398
1399 return infoPtr->CurVal;
1400 }
1401
1402
1403 /*************************************************************************
1404 * GetScrollInfo16 (USER.476)
1405 */
1406 BOOL16 WINAPI GetScrollInfo16( HWND16 hwnd, INT16 nBar, LPSCROLLINFO info )
1407 {
1408 return GetScrollInfo( hwnd, nBar, info );
1409 }
1410
1411
1412 /*************************************************************************
1413 * GetScrollInfo32 (USER32.284)
1414 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1415 * lower bound, and page size of a scrollbar control.
1416 *
1417 * RETURNS STD
1418 */
1419 BOOL WINAPI GetScrollInfo(
1420 HWND hwnd /* [I] Handle of window */ ,
1421 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1422 LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1423 {
1424 SCROLLBAR_INFO *infoPtr;
1425
1426 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1427 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1428 if ((info->cbSize != sizeof(*info)) &&
1429 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1430
1431 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1432 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1433 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1434 info->nTrackPos = (SCROLL_TrackingWin==hwnd) ? SCROLL_TrackingVal : infoPtr->CurVal;
1435 if (info->fMask & SIF_RANGE)
1436 {
1437 info->nMin = infoPtr->MinVal;
1438 info->nMax = infoPtr->MaxVal;
1439 }
1440 return (info->fMask & SIF_ALL) != 0;
1441 }
1442
1443
1444 /*************************************************************************
1445 * SetScrollPos16 (USER.62)
1446 */
1447 INT16 WINAPI SetScrollPos16( HWND16 hwnd, INT16 nBar, INT16 nPos,
1448 BOOL16 bRedraw )
1449 {
1450 return (INT16)SetScrollPos( hwnd, nBar, nPos, bRedraw );
1451 }
1452
1453
1454 /*************************************************************************
1455 * SetScrollPos32 (USER32.502)
1456 *
1457 * RETURNS
1458 * Success: Scrollbar position
1459 * Failure: 0
1460 *
1461 * REMARKS
1462 * Note the ambiguity when 0 is returned. Use GetLastError
1463 * to make sure there was an error (and to know which one).
1464 */
1465 INT WINAPI SetScrollPos(
1466 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1467 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1468 INT nPos /* [I] New value */,
1469 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
1470 {
1471 SCROLLINFO info;
1472 SCROLLBAR_INFO *infoPtr;
1473 INT oldPos;
1474
1475 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1476 oldPos = infoPtr->CurVal;
1477 info.cbSize = sizeof(info);
1478 info.nPos = nPos;
1479 info.fMask = SIF_POS;
1480 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1481 return oldPos;
1482 }
1483
1484
1485 /*************************************************************************
1486 * GetScrollPos16 (USER.63)
1487 */
1488 INT16 WINAPI GetScrollPos16( HWND16 hwnd, INT16 nBar )
1489 {
1490 return (INT16)GetScrollPos( hwnd, nBar );
1491 }
1492
1493
1494 /*************************************************************************
1495 * GetScrollPos32 (USER32.285)
1496 *
1497 * RETURNS
1498 * Success: Current position
1499 * Failure: 0
1500 *
1501 * REMARKS
1502 * Note the ambiguity when 0 is returned. Use GetLastError
1503 * to make sure there was an error (and to know which one).
1504 */
1505 INT WINAPI GetScrollPos(
1506 HWND hwnd, /* [I] Handle of window */
1507 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1508 {
1509 SCROLLBAR_INFO *infoPtr;
1510
1511 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1512 return infoPtr->CurVal;
1513 }
1514
1515
1516 /*************************************************************************
1517 * SetScrollRange16 (USER.64)
1518 */
1519 void WINAPI SetScrollRange16( HWND16 hwnd, INT16 nBar,
1520 INT16 MinVal, INT16 MaxVal, BOOL16 bRedraw )
1521 {
1522 /* Invalid range -> range is set to (0,0) */
1523 if ((INT)MaxVal - (INT)MinVal > 0x7fff) MinVal = MaxVal = 0;
1524 SetScrollRange( hwnd, nBar, MinVal, MaxVal, bRedraw );
1525 }
1526
1527
1528 /*************************************************************************
1529 * SetScrollRange32 (USER32.503)
1530 *
1531 * RETURNS STD
1532 */
1533 BOOL WINAPI SetScrollRange(
1534 HWND hwnd, /* [I] Handle of window whose scrollbar will be affected */
1535 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1536 INT MinVal, /* [I] New minimum value */
1537 INT MaxVal, /* [I] New maximum value */
1538 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1539 {
1540 SCROLLINFO info;
1541
1542 info.cbSize = sizeof(info);
1543 info.nMin = MinVal;
1544 info.nMax = MaxVal;
1545 info.fMask = SIF_RANGE;
1546 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1547 return TRUE;
1548 }
1549
1550
1551 /*************************************************************************
1552 * SCROLL_SetNCSbState
1553 *
1554 * Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
1555 */
1556 INT SCROLL_SetNCSbState(WND* wndPtr, int vMin, int vMax, int vPos,
1557 int hMin, int hMax, int hPos)
1558 {
1559 INT vA, hA;
1560 SCROLLINFO vInfo, hInfo;
1561
1562 vInfo.cbSize = hInfo.cbSize = sizeof(SCROLLINFO);
1563 vInfo.nMin = vMin; hInfo.nMin = hMin;
1564 vInfo.nMax = vMax; hInfo.nMax = hMax;
1565 vInfo.nPos = vPos; hInfo.nPos = hPos;
1566 vInfo.fMask = hInfo.fMask = SIF_RANGE | SIF_POS;
1567
1568 SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_VERT, &vInfo, &vA );
1569 SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_HORZ, &hInfo, &hA );
1570
1571 if( !SCROLL_ShowScrollBar( wndPtr->hwndSelf, SB_BOTH,
1572 (hA & SA_SSI_SHOW),(vA & SA_SSI_SHOW) ) )
1573 {
1574 /* SetWindowPos() wasn't called, just redraw the scrollbars if needed */
1575 if( vA & SA_SSI_REFRESH )
1576 SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_VERT, FALSE, TRUE );
1577
1578 if( hA & SA_SSI_REFRESH )
1579 SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_HORZ, FALSE, TRUE );
1580 }
1581 return 0;
1582 }
1583
1584
1585 /*************************************************************************
1586 * GetScrollRange16 (USER.65)
1587 */
1588 BOOL16 WINAPI GetScrollRange16( HWND16 hwnd, INT16 nBar,
1589 LPINT16 lpMin, LPINT16 lpMax)
1590 {
1591 INT min, max;
1592 BOOL16 ret = GetScrollRange( hwnd, nBar, &min, &max );
1593 if (lpMin) *lpMin = min;
1594 if (lpMax) *lpMax = max;
1595 return ret;
1596 }
1597
1598
1599 /*************************************************************************
1600 * GetScrollRange32 (USER32.286)
1601 *
1602 * RETURNS STD
1603 */
1604 BOOL WINAPI GetScrollRange(
1605 HWND hwnd, /* [I] Handle of window */
1606 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1607 LPINT lpMin, /* [O] Where to store minimum value */
1608 LPINT lpMax /* [O] Where to store maximum value */)
1609 {
1610 SCROLLBAR_INFO *infoPtr;
1611
1612 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar )))
1613 {
1614 if (lpMin) lpMin = 0;
1615 if (lpMax) lpMax = 0;
1616 return FALSE;
1617 }
1618 if (lpMin) *lpMin = infoPtr->MinVal;
1619 if (lpMax) *lpMax = infoPtr->MaxVal;
1620 return TRUE;
1621 }
1622
1623
1624 /*************************************************************************
1625 * SCROLL_ShowScrollBar()
1626 *
1627 * Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
1628 * NOTE: fShowV/fShowH must be zero when nBar is SB_HORZ/SB_VERT.
1629 */
1630 BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
1631 BOOL fShowH, BOOL fShowV )
1632 {
1633 WND *wndPtr = WIN_FindWndPtr( hwnd );
1634 BOOL retvalue = FALSE;
1635
1636 if (!wndPtr) return FALSE;
1637 TRACE("hwnd=%04x bar=%d horz=%d, vert=%d\n",
1638 hwnd, nBar, fShowH, fShowV );
1639
1640 switch(nBar)
1641 {
1642 case SB_CTL:
1643 ShowWindow( hwnd, fShowH ? SW_SHOW : SW_HIDE );
1644 retvalue = TRUE;
1645 goto END;
1646
1647 case SB_BOTH:
1648 case SB_HORZ:
1649 if (fShowH)
1650 {
1651 fShowH = !(wndPtr->dwStyle & WS_HSCROLL);
1652 wndPtr->dwStyle |= WS_HSCROLL;
1653 }
1654 else /* hide it */
1655 {
1656 fShowH = (wndPtr->dwStyle & WS_HSCROLL);
1657 wndPtr->dwStyle &= ~WS_HSCROLL;
1658 }
1659 if( nBar == SB_HORZ ) {
1660 fShowV = FALSE;
1661 break;
1662 }
1663 /* fall through */
1664
1665 case SB_VERT:
1666 if (fShowV)
1667 {
1668 fShowV = !(wndPtr->dwStyle & WS_VSCROLL);
1669 wndPtr->dwStyle |= WS_VSCROLL;
1670 }
1671 else /* hide it */
1672 {
1673 fShowV = (wndPtr->dwStyle & WS_VSCROLL);
1674 wndPtr->dwStyle &= ~WS_VSCROLL;
1675 }
1676 if ( nBar == SB_VERT )
1677 fShowH = FALSE;
1678 break;
1679
1680 default:
1681 retvalue = FALSE; /* Nothing to do! */
1682 goto END;
1683 }
1684
1685 if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */
1686 {
1687 SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
1688 | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
1689 retvalue = TRUE;
1690 goto END;
1691 }
1692
1693 retvalue = FALSE; /* no frame changes */
1694 END:
1695 WIN_ReleaseWndPtr(wndPtr);
1696 return retvalue;
1697 }
1698
1699
1700 /*************************************************************************
1701 * ShowScrollBar16 (USER.267)
1702 */
1703 void WINAPI ShowScrollBar16( HWND16 hwnd, INT16 nBar, BOOL16 fShow )
1704 {
1705 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1706 (nBar == SB_HORZ) ? 0 : fShow );
1707 }
1708
1709
1710 /*************************************************************************
1711 * ShowScrollBar32 (USER32.532)
1712 *
1713 * RETURNS STD
1714 */
1715 BOOL WINAPI ShowScrollBar(
1716 HWND hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
1717 INT nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1718 BOOL fShow /* [I] TRUE = show, FALSE = hide */)
1719 {
1720 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1721 (nBar == SB_HORZ) ? 0 : fShow );
1722 return TRUE;
1723 }
1724
1725
1726 /*************************************************************************
1727 * EnableScrollBar16 (USER.482)
1728 */
1729 BOOL16 WINAPI EnableScrollBar16( HWND16 hwnd, INT16 nBar, UINT16 flags )
1730 {
1731 return EnableScrollBar( hwnd, nBar, flags );
1732 }
1733
1734
1735 /*************************************************************************
1736 * EnableScrollBar32 (USER32.171)
1737 */
1738 BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags )
1739 {
1740 BOOL bFineWithMe;
1741 SCROLLBAR_INFO *infoPtr;
1742
1743 TRACE("%04x %d %d\n", hwnd, nBar, flags );
1744
1745 flags &= ESB_DISABLE_BOTH;
1746
1747 if (nBar == SB_BOTH)
1748 {
1749 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_VERT ))) return FALSE;
1750 if (!(bFineWithMe = (infoPtr->flags == flags)) )
1751 {
1752 infoPtr->flags = flags;
1753 SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE );
1754 }
1755 nBar = SB_HORZ;
1756 }
1757 else
1758 bFineWithMe = TRUE;
1759
1760 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1761 if (bFineWithMe && infoPtr->flags == flags) return FALSE;
1762 infoPtr->flags = flags;
1763
1764 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1765 return TRUE;
1766 }
Maarten's multimedia branch