source: trunk/src/user32/controls/scroll.c

Last change on this file was 8543, checked in by sandervl, 23 years ago

seperate odin control dll with latest wine controls added (not activate & not finished)
File size: 58.6 KB
Line 
1/*
2 * Scrollbar control
3 *
4 * Copyright 1993 Martin Ayotte
5 * Copyright 1994, 1996 Alexandre Julliard
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include "windef.h"
23#include "wingdi.h"
24#include "wine/winuser16.h"
25#include "controls.h"
26#include "win.h"
27#include "wine/debug.h"
28#include "user.h"
29#include "spy.h"
30
31WINE_DEFAULT_DEBUG_CHANNEL(scroll);
32
33typedef struct
34{
35 INT CurVal; /* Current scroll-bar value */
36 INT MinVal; /* Minimum scroll-bar value */
37 INT MaxVal; /* Maximum scroll-bar value */
38 INT Page; /* Page size of scroll bar (Win32) */
39 UINT flags; /* EnableScrollBar flags */
40} SCROLLBAR_INFO;
41
42
43static HBITMAP hUpArrow;
44static HBITMAP hDnArrow;
45static HBITMAP hLfArrow;
46static HBITMAP hRgArrow;
47static HBITMAP hUpArrowD;
48static HBITMAP hDnArrowD;
49static HBITMAP hLfArrowD;
50static HBITMAP hRgArrowD;
51static HBITMAP hUpArrowI;
52static HBITMAP hDnArrowI;
53static HBITMAP hLfArrowI;
54static HBITMAP hRgArrowI;
55
56#define TOP_ARROW(flags,pressed) \
57 (((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
58#define BOTTOM_ARROW(flags,pressed) \
59 (((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
60#define LEFT_ARROW(flags,pressed) \
61 (((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
62#define RIGHT_ARROW(flags,pressed) \
63 (((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
64
65
66 /* Minimum size of the rectangle between the arrows */
67#define SCROLL_MIN_RECT 4
68
69 /* Minimum size of the thumb in pixels */
70#define SCROLL_MIN_THUMB 6
71
72 /* Overlap between arrows and thumb */
73#define SCROLL_ARROW_THUMB_OVERLAP ((TWEAK_WineLook == WIN31_LOOK) ? 1 : 0)
74
75 /* Delay (in ms) before first repetition when holding the button down */
76#define SCROLL_FIRST_DELAY 200
77
78 /* Delay (in ms) between scroll repetitions */
79#define SCROLL_REPEAT_DELAY 50
80
81 /* Scroll timer id */
82#define SCROLL_TIMER 0
83
84 /* Scroll-bar hit testing */
85enum SCROLL_HITTEST
86{
87 SCROLL_NOWHERE, /* Outside the scroll bar */
88 SCROLL_TOP_ARROW, /* Top or left arrow */
89 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
90 SCROLL_THUMB, /* Thumb rectangle */
91 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
92 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
93};
94
95 /* What to do after SCROLL_SetScrollInfo() */
96#define SA_SSI_HIDE 0x0001
97#define SA_SSI_SHOW 0x0002
98#define SA_SSI_REFRESH 0x0004
99#define SA_SSI_REPAINT_ARROWS 0x0008
100
101 /* Thumb-tracking info */
102static HWND SCROLL_TrackingWin = 0;
103static INT SCROLL_TrackingBar = 0;
104static INT SCROLL_TrackingPos = 0;
105static INT SCROLL_TrackingVal = 0;
106 /* Hit test code of the last button-down event */
107static enum SCROLL_HITTEST SCROLL_trackHitTest;
108static BOOL SCROLL_trackVertical;
109
110 /* Is the moving thumb being displayed? */
111static BOOL SCROLL_MovingThumb = FALSE;
112
113 /* Local functions */
114static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
115 BOOL fShowH, BOOL fShowV );
116static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
117 const SCROLLINFO *info, INT *action );
118static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
119 RECT *rect, INT arrowSize,
120 INT thumbSize, INT thumbPos,
121 UINT flags, BOOL vertical,
122 BOOL top_selected, BOOL bottom_selected );
123static LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
124
125
126/*********************************************************************
127 * scrollbar class descriptor
128 */
129const struct builtin_class_descr SCROLL_builtin_class =
130{
131 "ScrollBar", /* name */
132 CS_GLOBALCLASS | CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */
133 NULL, /* procA (winproc is Unicode only) */
134 ScrollBarWndProc, /* procW */
135 sizeof(SCROLLBAR_INFO), /* extra */
136 IDC_ARROWA, /* cursor */
137 0 /* brush */
138};
139
140
141/***********************************************************************
142 * SCROLL_LoadBitmaps
143 */
144static void SCROLL_LoadBitmaps(void)
145{
146 hUpArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROW) );
147 hDnArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROW) );
148 hLfArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROW) );
149 hRgArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROW) );
150 hUpArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWD) );
151 hDnArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWD) );
152 hLfArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWD) );
153 hRgArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWD) );
154 hUpArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWI) );
155 hDnArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWI) );
156 hLfArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWI) );
157 hRgArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWI) );
158}
159
160
161/***********************************************************************
162 * SCROLL_GetScrollInfo
163 */
164static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND hwnd, INT nBar )
165{
166 SCROLLBAR_INFO *infoPtr;
167 WND *wndPtr = WIN_FindWndPtr( hwnd );
168
169 if (!wndPtr) return NULL;
170 switch(nBar)
171 {
172 case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break;
173 case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break;
174 case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break;
175 default:
176 WIN_ReleaseWndPtr( wndPtr );
177 return NULL;
178 }
179
180 if (!infoPtr) /* Create the info structure if needed */
181 {
182 if ((infoPtr = HeapAlloc( GetProcessHeap(), 0, sizeof(SCROLLBAR_INFO) )))
183 {
184 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
185 infoPtr->MaxVal = 100;
186 infoPtr->flags = ESB_ENABLE_BOTH;
187 if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
188 else wndPtr->pVScroll = infoPtr;
189 }
190 if (!hUpArrow) SCROLL_LoadBitmaps();
191 }
192 WIN_ReleaseWndPtr( wndPtr );
193 return infoPtr;
194}
195
196
197/***********************************************************************
198 * SCROLL_GetScrollBarRect
199 *
200 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
201 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
202 * 'arrowSize' returns the width or height of an arrow (depending on
203 * the orientation of the scrollbar), 'thumbSize' returns the size of
204 * the thumb, and 'thumbPos' returns the position of the thumb
205 * relative to the left or to the top.
206 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
207 */
208static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
209 INT *arrowSize, INT *thumbSize,
210 INT *thumbPos )
211{
212 INT pixels;
213 BOOL vertical;
214 WND *wndPtr = WIN_FindWndPtr( hwnd );
215
216 switch(nBar)
217 {
218 case SB_HORZ:
219 lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left;
220 lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
221 lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left;
222 lprect->bottom = lprect->top + GetSystemMetrics(SM_CYHSCROLL);
223 if(wndPtr->dwStyle & WS_BORDER) {
224 lprect->left--;
225 lprect->right++;
226 } else if(wndPtr->dwStyle & WS_VSCROLL)
227 lprect->right++;
228 vertical = FALSE;
229 break;
230
231 case SB_VERT:
232 lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
233 lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top;
234 lprect->right = lprect->left + GetSystemMetrics(SM_CXVSCROLL);
235 lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
236 if(wndPtr->dwStyle & WS_BORDER) {
237 lprect->top--;
238 lprect->bottom++;
239 } else if(wndPtr->dwStyle & WS_HSCROLL)
240 lprect->bottom++;
241 vertical = TRUE;
242 break;
243
244 case SB_CTL:
245 GetClientRect( hwnd, lprect );
246 vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
247 break;
248
249 default:
250 WIN_ReleaseWndPtr(wndPtr);
251 return FALSE;
252 }
253
254 if (vertical) pixels = lprect->bottom - lprect->top;
255 else pixels = lprect->right - lprect->left;
256
257 if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
258 {
259 if (pixels > SCROLL_MIN_RECT)
260 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
261 else
262 *arrowSize = 0;
263 *thumbPos = *thumbSize = 0;
264 }
265 else
266 {
267 SCROLLBAR_INFO *info = SCROLL_GetScrollInfo( hwnd, nBar );
268
269 *arrowSize = GetSystemMetrics(SM_CXVSCROLL);
270 pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
271
272 if (info->Page)
273 {
274 *thumbSize = MulDiv(pixels,info->Page,(info->MaxVal-info->MinVal+1));
275 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
276 }
277 else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
278
279 if (((pixels -= *thumbSize ) < 0) ||
280 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
281 {
282 /* Rectangle too small or scrollbar disabled -> no thumb */
283 *thumbPos = *thumbSize = 0;
284 }
285 else
286 {
287 INT max = info->MaxVal - max( info->Page-1, 0 );
288 if (info->MinVal >= max)
289 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
290 else
291 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
292 + MulDiv(pixels, (info->CurVal-info->MinVal),(max - info->MinVal));
293 }
294 }
295 WIN_ReleaseWndPtr(wndPtr);
296 return vertical;
297}
298
299
300/***********************************************************************
301 * SCROLL_GetThumbVal
302 *
303 * Compute the current scroll position based on the thumb position in pixels
304 * from the top of the scroll-bar.
305 */
306static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
307 BOOL vertical, INT pos )
308{
309 INT thumbSize;
310 INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
311
312 if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
313 return infoPtr->MinVal;
314
315 if (infoPtr->Page)
316 {
317 thumbSize = MulDiv(pixels,infoPtr->Page,(infoPtr->MaxVal-infoPtr->MinVal+1));
318 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
319 }
320 else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
321
322 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
323
324 pos = max( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
325 if (pos > pixels) pos = pixels;
326
327 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
328 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
329 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
330}
331
332/***********************************************************************
333 * SCROLL_PtInRectEx
334 */
335static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
336{
337 RECT rect = *lpRect;
338
339 if (vertical)
340 {
341 rect.left -= lpRect->right - lpRect->left;
342 rect.right += lpRect->right - lpRect->left;
343 }
344 else
345 {
346 rect.top -= lpRect->bottom - lpRect->top;
347 rect.bottom += lpRect->bottom - lpRect->top;
348 }
349 return PtInRect( &rect, pt );
350}
351
352/***********************************************************************
353 * SCROLL_ClipPos
354 */
355static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
356{
357 if( pt.x < lpRect->left )
358 pt.x = lpRect->left;
359 else
360 if( pt.x > lpRect->right )
361 pt.x = lpRect->right;
362
363 if( pt.y < lpRect->top )
364 pt.y = lpRect->top;
365 else
366 if( pt.y > lpRect->bottom )
367 pt.y = lpRect->bottom;
368
369 return pt;
370}
371
372
373/***********************************************************************
374 * SCROLL_HitTest
375 *
376 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
377 */
378static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
379 POINT pt, BOOL bDragging )
380{
381 INT arrowSize, thumbSize, thumbPos;
382 RECT rect;
383
384 BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
385 &arrowSize, &thumbSize, &thumbPos );
386
387 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
388 (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
389
390 if (vertical)
391 {
392 if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW;
393 if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
394 if (!thumbPos) return SCROLL_TOP_RECT;
395 pt.y -= rect.top;
396 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
397 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
398 }
399 else /* horizontal */
400 {
401 if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW;
402 if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
403 if (!thumbPos) return SCROLL_TOP_RECT;
404 pt.x -= rect.left;
405 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
406 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
407 }
408 return SCROLL_THUMB;
409}
410
411
412/***********************************************************************
413 * SCROLL_DrawArrows
414 *
415 * Draw the scroll bar arrows.
416 */
417static void SCROLL_DrawArrows_9x( HDC hdc, SCROLLBAR_INFO *infoPtr,
418 RECT *rect, INT arrowSize, BOOL vertical,
419 BOOL top_pressed, BOOL bottom_pressed )
420{
421 RECT r;
422
423 r = *rect;
424 if( vertical )
425 r.bottom = r.top + arrowSize;
426 else
427 r.right = r.left + arrowSize;
428
429 DrawFrameControl( hdc, &r, DFC_SCROLL,
430 (vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT)
431 | (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
432 | (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) );
433
434 r = *rect;
435 if( vertical )
436 r.top = r.bottom-arrowSize;
437 else
438 r.left = r.right-arrowSize;
439
440 DrawFrameControl( hdc, &r, DFC_SCROLL,
441 (vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT)
442 | (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
443 | (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) );
444}
445
446static void SCROLL_DrawArrows_31( HDC hdc, SCROLLBAR_INFO *infoPtr,
447 RECT *rect, INT arrowSize, BOOL vertical,
448 BOOL top_pressed, BOOL bottom_pressed )
449{
450 HDC hdcMem = CreateCompatibleDC( hdc );
451 HBITMAP hbmpPrev = SelectObject( hdcMem, vertical ?
452 TOP_ARROW(infoPtr->flags, top_pressed)
453 : LEFT_ARROW(infoPtr->flags, top_pressed));
454
455 SetStretchBltMode( hdc, STRETCH_DELETESCANS );
456 StretchBlt( hdc, rect->left, rect->top,
457 vertical ? rect->right-rect->left : arrowSize,
458 vertical ? arrowSize : rect->bottom-rect->top,
459 hdcMem, 0, 0,
460 GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
461 SRCCOPY );
462
463 SelectObject( hdcMem, vertical ?
464 BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
465 : RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
466 if (vertical)
467 StretchBlt( hdc, rect->left, rect->bottom - arrowSize,
468 rect->right - rect->left, arrowSize,
469 hdcMem, 0, 0,
470 GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
471 SRCCOPY );
472 else
473 StretchBlt( hdc, rect->right - arrowSize, rect->top,
474 arrowSize, rect->bottom - rect->top,
475 hdcMem, 0, 0,
476 GetSystemMetrics(SM_CXVSCROLL), GetSystemMetrics(SM_CYHSCROLL),
477 SRCCOPY );
478 SelectObject( hdcMem, hbmpPrev );
479 DeleteDC( hdcMem );
480}
481
482static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
483 RECT *rect, INT arrowSize, BOOL vertical,
484 BOOL top_pressed, BOOL bottom_pressed )
485{
486 if( TWEAK_WineLook == WIN31_LOOK )
487 SCROLL_DrawArrows_31( hdc, infoPtr, rect, arrowSize,
488 vertical, top_pressed,bottom_pressed );
489 else
490 SCROLL_DrawArrows_9x( hdc, infoPtr, rect, arrowSize,
491 vertical, top_pressed,bottom_pressed );
492}
493
494
495/***********************************************************************
496 * SCROLL_DrawMovingThumb
497 *
498 * Draw the moving thumb rectangle.
499 */
500static void SCROLL_DrawMovingThumb_31( HDC hdc, RECT *rect, BOOL vertical,
501 INT arrowSize, INT thumbSize )
502{
503 RECT r = *rect;
504 if (vertical)
505 {
506 r.top += SCROLL_TrackingPos;
507 if (r.top < rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
508 r.top = rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
509 if (r.top + thumbSize >
510 rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
511 r.top = rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
512 - thumbSize;
513 r.bottom = r.top + thumbSize;
514 }
515 else
516 {
517 r.left += SCROLL_TrackingPos;
518 if (r.left < rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
519 r.left = rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
520 if (r.left + thumbSize >
521 rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
522 r.left = rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
523 - thumbSize;
524 r.right = r.left + thumbSize;
525 }
526
527 DrawFocusRect( hdc, &r );
528 SCROLL_MovingThumb = !SCROLL_MovingThumb;
529}
530
531static void SCROLL_DrawMovingThumb_9x( HDC hdc, RECT *rect, BOOL vertical,
532 INT arrowSize, INT thumbSize )
533{
534 INT pos = SCROLL_TrackingPos;
535 INT max_size;
536
537 if( vertical )
538 max_size = rect->bottom - rect->top;
539 else
540 max_size = rect->right - rect->left;
541
542 max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize;
543
544 if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) )
545 pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP);
546 else if( pos > max_size )
547 pos = max_size;
548
549 SCROLL_DrawInterior_9x( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar,
550 rect, arrowSize, thumbSize, pos,
551 0, vertical, FALSE, FALSE );
552
553 SCROLL_MovingThumb = !SCROLL_MovingThumb;
554}
555
556static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
557 INT arrowSize, INT thumbSize )
558{
559 if( TWEAK_WineLook == WIN31_LOOK )
560 SCROLL_DrawMovingThumb_31( hdc, rect, vertical, arrowSize, thumbSize );
561 else
562 SCROLL_DrawMovingThumb_9x( hdc, rect, vertical, arrowSize, thumbSize );
563}
564
565/***********************************************************************
566 * SCROLL_DrawInterior
567 *
568 * Draw the scroll bar interior (everything except the arrows).
569 */
570static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
571 RECT *rect, INT arrowSize,
572 INT thumbSize, INT thumbPos,
573 UINT flags, BOOL vertical,
574 BOOL top_selected, BOOL bottom_selected )
575{
576 RECT r;
577 HPEN hSavePen;
578 HBRUSH hSaveBrush,hBrush;
579
580 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
581 * The window-owned scrollbars need to call DEFWND_ControlColor
582 * to correctly setup default scrollbar colors
583 */
584 if (nBar == SB_CTL)
585 {
586 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
587 (WPARAM)hdc,(LPARAM)hwnd);
588 }
589 else
590 {
591 hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
592 }
593
594 hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) );
595 hSaveBrush = SelectObject( hdc, hBrush );
596
597 /* Calculate the scroll rectangle */
598 r = *rect;
599 if (vertical)
600 {
601 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
602 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
603 }
604 else
605 {
606 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
607 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
608 }
609
610 /* Draw the scroll rectangles and thumb */
611 if (!thumbPos) /* No thumb to draw */
612 {
613 PatBlt( hdc, r.left, r.top,
614 r.right - r.left, r.bottom - r.top,
615 PATCOPY );
616
617 /* cleanup and return */
618 SelectObject( hdc, hSavePen );
619 SelectObject( hdc, hSaveBrush );
620 return;
621 }
622
623 if (vertical)
624 {
625 PatBlt( hdc, r.left, r.top,
626 r.right - r.left,
627 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
628 top_selected ? 0x0f0000 : PATCOPY );
629 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
630 PatBlt( hdc, r.left, r.top + thumbSize,
631 r.right - r.left,
632 r.bottom - r.top - thumbSize,
633 bottom_selected ? 0x0f0000 : PATCOPY );
634 r.bottom = r.top + thumbSize;
635 }
636 else /* horizontal */
637 {
638 PatBlt( hdc, r.left, r.top,
639 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
640 r.bottom - r.top,
641 top_selected ? 0x0f0000 : PATCOPY );
642 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
643 PatBlt( hdc, r.left + thumbSize, r.top,
644 r.right - r.left - thumbSize,
645 r.bottom - r.top,
646 bottom_selected ? 0x0f0000 : PATCOPY );
647 r.right = r.left + thumbSize;
648 }
649
650 /* Draw the thumb */
651 DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT | BF_MIDDLE );
652
653 /* cleanup */
654 SelectObject( hdc, hSavePen );
655 SelectObject( hdc, hSaveBrush );
656}
657
658
659static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
660 RECT *rect, INT arrowSize,
661 INT thumbSize, INT thumbPos,
662 UINT flags, BOOL vertical,
663 BOOL top_selected, BOOL bottom_selected )
664{
665 RECT r;
666 HPEN hSavePen;
667 HBRUSH hSaveBrush,hBrush;
668 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
669
670 if (Save_SCROLL_MovingThumb &&
671 (SCROLL_TrackingWin == hwnd) &&
672 (SCROLL_TrackingBar == nBar))
673 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
674
675 /* Select the correct brush and pen */
676
677 if (TWEAK_WineLook == WIN31_LOOK && (flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
678 {
679 /* This ought to be the color of the parent window */
680 hBrush = GetSysColorBrush(COLOR_WINDOW);
681 }
682 else
683 {
684 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
685 * The window-owned scrollbars need to call DEFWND_ControlColor
686 * to correctly setup default scrollbar colors
687 */
688 if (nBar == SB_CTL) {
689 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
690 (WPARAM)hdc,(LPARAM)hwnd);
691 } else {
692 hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
693 }
694 }
695 hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) );
696 hSaveBrush = SelectObject( hdc, hBrush );
697
698 /* Calculate the scroll rectangle */
699
700 r = *rect;
701 if (vertical)
702 {
703 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
704 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
705 }
706 else
707 {
708 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
709 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
710 }
711
712 /* Draw the scroll bar frame */
713
714 /* Only draw outline if Win 3.1. Mar 24, 1999 - Ronald B. Cemer */
715 if (TWEAK_WineLook == WIN31_LOOK)
716 Rectangle( hdc, r.left, r.top, r.right, r.bottom );
717
718 /* Draw the scroll rectangles and thumb */
719
720 if (!thumbPos) /* No thumb to draw */
721 {
722 INT offset = (TWEAK_WineLook > WIN31_LOOK) ? 0 : 1;
723
724 PatBlt( hdc, r.left+offset, r.top+offset,
725 r.right - r.left - 2*offset, r.bottom - r.top - 2*offset,
726 PATCOPY );
727
728 /* cleanup and return */
729 SelectObject( hdc, hSavePen );
730 SelectObject( hdc, hSaveBrush );
731 return;
732 }
733
734 if (vertical)
735 {
736 INT offset = (TWEAK_WineLook == WIN31_LOOK) ? 1 : 0;
737
738 PatBlt( hdc, r.left + offset, r.top + offset,
739 r.right - r.left - offset*2,
740 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - offset,
741 top_selected ? 0x0f0000 : PATCOPY );
742 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
743 PatBlt( hdc, r.left + offset, r.top + thumbSize,
744 r.right - r.left - offset*2,
745 r.bottom - r.top - thumbSize - offset,
746 bottom_selected ? 0x0f0000 : PATCOPY );
747 r.bottom = r.top + thumbSize;
748 }
749 else /* horizontal */
750 {
751 INT offset = (TWEAK_WineLook == WIN31_LOOK) ? 1 : 0;
752
753 PatBlt( hdc, r.left + offset, r.top + offset,
754 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
755 r.bottom - r.top - offset*2,
756 top_selected ? 0x0f0000 : PATCOPY );
757 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
758 PatBlt( hdc, r.left + thumbSize, r.top + offset,
759 r.right - r.left - thumbSize - offset,
760 r.bottom - r.top - offset*2,
761 bottom_selected ? 0x0f0000 : PATCOPY );
762 r.right = r.left + thumbSize;
763 }
764
765 /* Draw the thumb */
766
767 SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
768 if (TWEAK_WineLook == WIN31_LOOK)
769 {
770 Rectangle( hdc, r.left, r.top, r.right, r.bottom );
771 r.top++, r.left++;
772 }
773 else
774 {
775 Rectangle( hdc, r.left+1, r.top+1, r.right-1, r.bottom-1 );
776 }
777 DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
778
779 if (Save_SCROLL_MovingThumb &&
780 (SCROLL_TrackingWin == hwnd) &&
781 (SCROLL_TrackingBar == nBar))
782 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
783
784 /* cleanup */
785 SelectObject( hdc, hSavePen );
786 SelectObject( hdc, hSaveBrush );
787}
788
789
790/***********************************************************************
791 * SCROLL_DrawScrollBar
792 *
793 * Redraw the whole scrollbar.
794 */
795void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
796 BOOL arrows, BOOL interior )
797{
798 INT arrowSize, thumbSize, thumbPos;
799 RECT rect;
800 BOOL vertical;
801 WND *wndPtr = WIN_FindWndPtr( hwnd );
802 SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
803 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
804
805 if (!wndPtr || !infoPtr ||
806 ((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
807 ((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) goto END;
808 if (!WIN_IsWindowDrawable( hwnd, FALSE )) goto END;
809 hwnd = wndPtr->hwndSelf; /* make it a full handle */
810
811 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
812 &arrowSize, &thumbSize, &thumbPos );
813
814 /* do not draw if the scrollbar rectangle is empty */
815 if(IsRectEmpty(&rect))
816 goto END;
817
818 if (Save_SCROLL_MovingThumb &&
819 (SCROLL_TrackingWin == hwnd) &&
820 (SCROLL_TrackingBar == nBar))
821 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
822
823 /* Draw the arrows */
824
825 if (arrows && arrowSize)
826 {
827 if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
828 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
829 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
830 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
831 else
832 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
833 FALSE, FALSE );
834 }
835 if( interior )
836 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
837 thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
838
839 if (Save_SCROLL_MovingThumb &&
840 (SCROLL_TrackingWin == hwnd) &&
841 (SCROLL_TrackingBar == nBar))
842 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
843
844 /* if scroll bar has focus, reposition the caret */
845 if(hwnd==GetFocus() && (nBar==SB_CTL))
846 {
847 if (!vertical)
848 {
849 SetCaretPos(thumbPos+1, rect.top+1);
850 }
851 else
852 {
853 SetCaretPos(rect.top+1, thumbPos+1);
854 }
855 }
856
857END:
858 WIN_ReleaseWndPtr(wndPtr);
859}
860
861
862/***********************************************************************
863 * SCROLL_RefreshScrollBar
864 *
865 * Repaint the scroll bar interior after a SetScrollRange() or
866 * SetScrollPos() call.
867 */
868static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
869 BOOL arrows, BOOL interior )
870{
871 HDC hdc = GetDCEx( hwnd, 0,
872 DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
873 if (!hdc) return;
874
875 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
876 ReleaseDC( hwnd, hdc );
877}
878
879
880/***********************************************************************
881 * SCROLL_HandleKbdEvent
882 *
883 * Handle a keyboard event (only for SB_CTL scrollbars).
884 */
885static void SCROLL_HandleKbdEvent( HWND hwnd, WPARAM wParam )
886{
887 WPARAM msg;
888
889 switch(wParam)
890 {
891 case VK_PRIOR: msg = SB_PAGEUP; break;
892 case VK_NEXT: msg = SB_PAGEDOWN; break;
893 case VK_HOME: msg = SB_TOP; break;
894 case VK_END: msg = SB_BOTTOM; break;
895 case VK_UP: msg = SB_LINEUP; break;
896 case VK_DOWN: msg = SB_LINEDOWN; break;
897 default: return;
898 }
899 SendMessageW( GetParent(hwnd),
900 (GetWindowLongA( hwnd, GWL_STYLE ) & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
901 msg, (LPARAM)hwnd );
902}
903
904
905/***********************************************************************
906 * SCROLL_HandleScrollEvent
907 *
908 * Handle a mouse or timer event for the scrollbar.
909 * 'pt' is the location of the mouse event in client (for SB_CTL) or
910 * windows coordinates.
911 */
912static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt)
913{
914 /* Previous mouse position for timer events */
915 static POINT prevPt;
916 /* Thumb position when tracking started. */
917 static UINT trackThumbPos;
918 /* Position in the scroll-bar of the last button-down event. */
919 static INT lastClickPos;
920 /* Position in the scroll-bar of the last mouse event. */
921 static INT lastMousePos;
922
923 enum SCROLL_HITTEST hittest;
924 HWND hwndOwner, hwndCtl;
925 BOOL vertical;
926 INT arrowSize, thumbSize, thumbPos;
927 RECT rect;
928 HDC hdc;
929
930 SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
931 if (!infoPtr) return;
932 if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
933 return;
934
935 hdc = GetDCEx( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
936 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
937 &arrowSize, &thumbSize, &thumbPos );
938 hwndOwner = (nBar == SB_CTL) ? GetParent(hwnd) : hwnd;
939 hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
940
941 switch(msg)
942 {
943 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
944 HideCaret(hwnd); /* hide caret while holding down LBUTTON */
945 SCROLL_trackVertical = vertical;
946 SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
947 lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
948 lastMousePos = lastClickPos;
949 trackThumbPos = thumbPos;
950 prevPt = pt;
951 if (nBar == SB_CTL && (GetWindowLongA(hwnd, GWL_STYLE) & WS_TABSTOP)) SetFocus( hwnd );
952 SetCapture( hwnd );
953 break;
954
955 case WM_MOUSEMOVE:
956 hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
957 prevPt = pt;
958 break;
959
960 case WM_LBUTTONUP:
961 hittest = SCROLL_NOWHERE;
962 ReleaseCapture();
963 /* if scrollbar has focus, show back caret */
964 if (hwnd==GetFocus()) ShowCaret(hwnd);
965 break;
966
967 case WM_SYSTIMER:
968 pt = prevPt;
969 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
970 break;
971
972 default:
973 return; /* Should never happen */
974 }
975
976 TRACE("Event: hwnd=%04x bar=%d msg=%s pt=%ld,%ld hit=%d\n",
977 hwnd, nBar, SPY_GetMsgName(msg,hwnd), pt.x, pt.y, hittest );
978
979 switch(SCROLL_trackHitTest)
980 {
981 case SCROLL_NOWHERE: /* No tracking in progress */
982 break;
983
984 case SCROLL_TOP_ARROW:
985 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
986 (hittest == SCROLL_trackHitTest), FALSE );
987 if (hittest == SCROLL_trackHitTest)
988 {
989 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
990 {
991 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
992 SB_LINEUP, (LPARAM)hwndCtl );
993 }
994
995 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
996 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
997 (TIMERPROC)0 );
998 }
999 else KillSystemTimer( hwnd, SCROLL_TIMER );
1000 break;
1001
1002 case SCROLL_TOP_RECT:
1003 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
1004 thumbPos, infoPtr->flags, vertical,
1005 (hittest == SCROLL_trackHitTest), FALSE );
1006 if (hittest == SCROLL_trackHitTest)
1007 {
1008 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
1009 {
1010 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1011 SB_PAGEUP, (LPARAM)hwndCtl );
1012 }
1013 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1014 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1015 (TIMERPROC)0 );
1016 }
1017 else KillSystemTimer( hwnd, SCROLL_TIMER );
1018 break;
1019
1020 case SCROLL_THUMB:
1021 if (msg == WM_LBUTTONDOWN)
1022 {
1023 SCROLL_TrackingWin = hwnd;
1024 SCROLL_TrackingBar = nBar;
1025 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
1026 if (!SCROLL_MovingThumb)
1027 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
1028 }
1029 else if (msg == WM_LBUTTONUP)
1030 {
1031 if (SCROLL_MovingThumb)
1032 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
1033 SCROLL_TrackingWin = 0;
1034 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
1035 thumbPos, infoPtr->flags, vertical,
1036 FALSE, FALSE );
1037 }
1038 else /* WM_MOUSEMOVE */
1039 {
1040 UINT pos;
1041
1042 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
1043 else
1044 {
1045 pt = SCROLL_ClipPos( &rect, pt );
1046 pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
1047 }
1048 if ( (pos != lastMousePos) || (!SCROLL_MovingThumb) )
1049 {
1050 if (SCROLL_MovingThumb)
1051 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
1052 arrowSize, thumbSize );
1053 lastMousePos = pos;
1054 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
1055 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
1056 vertical,
1057 SCROLL_TrackingPos );
1058 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1059 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
1060 (LPARAM)hwndCtl );
1061 if (!SCROLL_MovingThumb)
1062 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
1063 arrowSize, thumbSize );
1064 }
1065 }
1066 break;
1067
1068 case SCROLL_BOTTOM_RECT:
1069 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
1070 thumbPos, infoPtr->flags, vertical,
1071 FALSE, (hittest == SCROLL_trackHitTest) );
1072 if (hittest == SCROLL_trackHitTest)
1073 {
1074 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
1075 {
1076 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1077 SB_PAGEDOWN, (LPARAM)hwndCtl );
1078 }
1079 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1080 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1081 (TIMERPROC)0 );
1082 }
1083 else KillSystemTimer( hwnd, SCROLL_TIMER );
1084 break;
1085
1086 case SCROLL_BOTTOM_ARROW:
1087 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
1088 FALSE, (hittest == SCROLL_trackHitTest) );
1089 if (hittest == SCROLL_trackHitTest)
1090 {
1091 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
1092 {
1093 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1094 SB_LINEDOWN, (LPARAM)hwndCtl );
1095 }
1096
1097 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1098 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1099 (TIMERPROC)0 );
1100 }
1101 else KillSystemTimer( hwnd, SCROLL_TIMER );
1102 break;
1103 }
1104
1105 if (msg == WM_LBUTTONUP)
1106 {
1107 hittest = SCROLL_trackHitTest;
1108 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
1109
1110 if (hittest == SCROLL_THUMB)
1111 {
1112 UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
1113 trackThumbPos + lastMousePos - lastClickPos );
1114 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1115 MAKEWPARAM( SB_THUMBPOSITION, val ), (LPARAM)hwndCtl );
1116 }
1117 else
1118 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1119 SB_ENDSCROLL, (LPARAM)hwndCtl );
1120 }
1121
1122 ReleaseDC( hwnd, hdc );
1123}
1124
1125
1126/***********************************************************************
1127 * SCROLL_TrackScrollBar
1128 *
1129 * Track a mouse button press on a scroll-bar.
1130 * pt is in screen-coordinates for non-client scroll bars.
1131 */
1132void SCROLL_TrackScrollBar( HWND hwnd, INT scrollbar, POINT pt )
1133{
1134 MSG msg;
1135 INT xoffset = 0, yoffset = 0;
1136
1137 if (scrollbar != SB_CTL)
1138 {
1139 WND *wndPtr = WIN_GetPtr( hwnd );
1140 if (!wndPtr || wndPtr == WND_OTHER_PROCESS) return;
1141 xoffset = wndPtr->rectClient.left - wndPtr->rectWindow.left;
1142 yoffset = wndPtr->rectClient.top - wndPtr->rectWindow.top;
1143 WIN_ReleasePtr( wndPtr );
1144 ScreenToClient( hwnd, &pt );
1145 pt.x += xoffset;
1146 pt.y += yoffset;
1147 }
1148
1149 SCROLL_HandleScrollEvent( hwnd, scrollbar, WM_LBUTTONDOWN, pt );
1150
1151 do
1152 {
1153 if (!GetMessageW( &msg, 0, 0, 0 )) break;
1154 if (CallMsgFilterW( &msg, MSGF_SCROLLBAR )) continue;
1155 switch(msg.message)
1156 {
1157 case WM_LBUTTONUP:
1158 case WM_MOUSEMOVE:
1159 case WM_SYSTIMER:
1160 pt.x = LOWORD(msg.lParam) + xoffset;
1161 pt.y = HIWORD(msg.lParam) + yoffset;
1162 SCROLL_HandleScrollEvent( hwnd, scrollbar, msg.message, pt );
1163 break;
1164 default:
1165 TranslateMessage( &msg );
1166 DispatchMessageW( &msg );
1167 break;
1168 }
1169 if (!IsWindow( hwnd ))
1170 {
1171 ReleaseCapture();
1172 break;
1173 }
1174 } while (msg.message != WM_LBUTTONUP);
1175}
1176
1177
1178/***********************************************************************
1179 * ScrollBarWndProc
1180 */
1181static LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1182{
1183 if (!IsWindow( hwnd )) return 0;
1184
1185 switch(message)
1186 {
1187 case WM_CREATE:
1188 {
1189 SCROLLBAR_INFO *infoPtr;
1190 CREATESTRUCTW *lpCreat = (CREATESTRUCTW *)lParam;
1191
1192 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_CTL ))) return -1;
1193 if (lpCreat->style & WS_DISABLED)
1194 {
1195 TRACE("Created WS_DISABLED scrollbar\n");
1196 infoPtr->flags = ESB_DISABLE_BOTH;
1197 }
1198
1199 if (lpCreat->style & SBS_SIZEBOX)
1200 {
1201 FIXME("Unimplemented style SBS_SIZEBOX.\n" );
1202 return 0;
1203 }
1204 if (lpCreat->style & SBS_VERT)
1205 {
1206 if (lpCreat->style & SBS_LEFTALIGN)
1207 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
1208 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
1209 else if (lpCreat->style & SBS_RIGHTALIGN)
1210 MoveWindow( hwnd,
1211 lpCreat->x+lpCreat->cx-GetSystemMetrics(SM_CXVSCROLL)-1,
1212 lpCreat->y,
1213 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
1214 }
1215 else /* SBS_HORZ */
1216 {
1217 if (lpCreat->style & SBS_TOPALIGN)
1218 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
1219 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
1220 else if (lpCreat->style & SBS_BOTTOMALIGN)
1221 MoveWindow( hwnd,
1222 lpCreat->x,
1223 lpCreat->y+lpCreat->cy-GetSystemMetrics(SM_CYHSCROLL)-1,
1224 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
1225 }
1226 }
1227 if (!hUpArrow) SCROLL_LoadBitmaps();
1228 TRACE("ScrollBar creation, hwnd=%04x\n", hwnd );
1229 return 0;
1230
1231 case WM_ENABLE:
1232 {
1233 SCROLLBAR_INFO *infoPtr;
1234 if ((infoPtr = SCROLL_GetScrollInfo( hwnd, SB_CTL )))
1235 {
1236 infoPtr->flags = wParam ? ESB_ENABLE_BOTH : ESB_DISABLE_BOTH;
1237 SCROLL_RefreshScrollBar(hwnd, SB_CTL, TRUE, TRUE);
1238 }
1239 }
1240 return 0;
1241
1242 case WM_LBUTTONDOWN:
1243 {
1244 POINT pt;
1245 pt.x = SLOWORD(lParam);
1246 pt.y = SHIWORD(lParam);
1247 SCROLL_TrackScrollBar( hwnd, SB_CTL, pt );
1248 }
1249 break;
1250 case WM_LBUTTONUP:
1251 case WM_MOUSEMOVE:
1252 case WM_SYSTIMER:
1253 {
1254 POINT pt;
1255 pt.x = SLOWORD(lParam);
1256 pt.y = SHIWORD(lParam);
1257 SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
1258 }
1259 break;
1260
1261 /* if key event is received, the scrollbar has the focus */
1262 case WM_KEYDOWN:
1263 /* hide caret on first KEYDOWN to prevent flicker */
1264 if ((lParam & 0x40000000)==0)
1265 HideCaret(hwnd);
1266 SCROLL_HandleKbdEvent( hwnd, wParam );
1267 break;
1268
1269 case WM_KEYUP:
1270 ShowCaret(hwnd);
1271 break;
1272
1273 case WM_SETFOCUS:
1274 {
1275 /* Create a caret when a ScrollBar get focus */
1276 RECT rect;
1277 int arrowSize, thumbSize, thumbPos, vertical;
1278 vertical = SCROLL_GetScrollBarRect( hwnd, SB_CTL, &rect,
1279 &arrowSize, &thumbSize, &thumbPos );
1280 if (!vertical)
1281 {
1282 CreateCaret(hwnd,1, thumbSize-2, rect.bottom-rect.top-2);
1283 SetCaretPos(thumbPos+1, rect.top+1);
1284 }
1285 else
1286 {
1287 CreateCaret(hwnd,1, rect.right-rect.left-2,thumbSize-2);
1288 SetCaretPos(rect.top+1, thumbPos+1);
1289 }
1290 ShowCaret(hwnd);
1291 }
1292 break;
1293
1294 case WM_KILLFOCUS:
1295 {
1296 RECT rect;
1297 int arrowSize, thumbSize, thumbPos, vertical;
1298 vertical = SCROLL_GetScrollBarRect( hwnd, SB_CTL, &rect,&arrowSize, &thumbSize, &thumbPos );
1299 if (!vertical){
1300 rect.left=thumbPos+1;
1301 rect.right=rect.left+thumbSize;
1302 }
1303 else
1304 {
1305 rect.top=thumbPos+1;
1306 rect.bottom=rect.top+thumbSize;
1307 }
1308 HideCaret(hwnd);
1309 InvalidateRect(hwnd,&rect,0);
1310 DestroyCaret();
1311 }
1312 break;
1313
1314 case WM_ERASEBKGND:
1315 return 1;
1316
1317 case WM_GETDLGCODE:
1318 return DLGC_WANTARROWS; /* Windows returns this value */
1319
1320 case WM_PAINT:
1321 {
1322 PAINTSTRUCT ps;
1323 HDC hdc = BeginPaint( hwnd, &ps );
1324 SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
1325 EndPaint( hwnd, &ps );
1326 }
1327 break;
1328
1329 case SBM_SETPOS16:
1330 case SBM_SETPOS:
1331 return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
1332
1333 case SBM_GETPOS16:
1334 case SBM_GETPOS:
1335 return GetScrollPos( hwnd, SB_CTL );
1336
1337 case SBM_SETRANGE16:
1338 SetScrollRange( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam),
1339 wParam /* FIXME: Is this correct? */ );
1340 return 0;
1341
1342 case SBM_SETRANGE:
1343 {
1344 INT oldPos = GetScrollPos( hwnd, SB_CTL );
1345 SetScrollRange( hwnd, SB_CTL, wParam, lParam, FALSE );
1346 if (oldPos != GetScrollPos( hwnd, SB_CTL )) return oldPos;
1347 }
1348 return 0;
1349
1350 case SBM_GETRANGE16:
1351 FIXME("don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam, lParam );
1352 return 0;
1353
1354 case SBM_GETRANGE:
1355 GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
1356 return 0;
1357
1358 case SBM_ENABLE_ARROWS16:
1359 case SBM_ENABLE_ARROWS:
1360 return EnableScrollBar( hwnd, SB_CTL, wParam );
1361
1362 case SBM_SETRANGEREDRAW:
1363 {
1364 INT oldPos = GetScrollPos( hwnd, SB_CTL );
1365 SetScrollRange( hwnd, SB_CTL, wParam, lParam, TRUE );
1366 if (oldPos != GetScrollPos( hwnd, SB_CTL )) return oldPos;
1367 }
1368 return 0;
1369
1370 case SBM_SETSCROLLINFO:
1371 return SetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
1372
1373 case SBM_GETSCROLLINFO:
1374 return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
1375
1376 case 0x00e5:
1377 case 0x00e7:
1378 case 0x00e8:
1379 case 0x00eb:
1380 case 0x00ec:
1381 case 0x00ed:
1382 case 0x00ee:
1383 case 0x00ef:
1384 ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
1385 message, wParam, lParam );
1386 break;
1387
1388 default:
1389 if (message >= WM_USER)
1390 WARN("unknown msg %04x wp=%04x lp=%08lx\n",
1391 message, wParam, lParam );
1392 return DefWindowProcW( hwnd, message, wParam, lParam );
1393 }
1394 return 0;
1395}
1396
1397
1398/*************************************************************************
1399 * SetScrollInfo (USER32.@)
1400 * SetScrollInfo can be used to set the position, upper bound,
1401 * lower bound, and page size of a scrollbar control.
1402 *
1403 * RETURNS
1404 * Scrollbar position
1405 *
1406 * NOTE
1407 * For 100 lines of text to be displayed in a window of 25 lines,
1408 * one would for instance use info->nMin=0, info->nMax=75
1409 * (corresponding to the 76 different positions of the window on
1410 * the text), and info->nPage=25.
1411 */
1412INT WINAPI SetScrollInfo(
1413HWND hwnd /* [in] Handle of window whose scrollbar will be affected */,
1414INT nBar /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */,
1415const SCROLLINFO *info /* [in] Specifies what to change and new values */,
1416BOOL bRedraw /* [in] Should scrollbar be redrawn afterwards ? */)
1417{
1418 INT action;
1419 INT retVal = SCROLL_SetScrollInfo( hwnd, nBar, info, &action );
1420
1421 if( action & SA_SSI_HIDE )
1422 SCROLL_ShowScrollBar( hwnd, nBar, FALSE, FALSE );
1423 else
1424 {
1425 if( action & SA_SSI_SHOW )
1426 if( SCROLL_ShowScrollBar( hwnd, nBar, TRUE, TRUE ) )
1427 return retVal; /* SetWindowPos() already did the painting */
1428
1429 if( bRedraw && (action & SA_SSI_REFRESH))
1430 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1431 else if( action & SA_SSI_REPAINT_ARROWS )
1432 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE );
1433 }
1434 return retVal;
1435}
1436
1437INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
1438 const SCROLLINFO *info, INT *action )
1439{
1440 /* Update the scrollbar state and set action flags according to
1441 * what has to be done graphics wise. */
1442
1443 SCROLLBAR_INFO *infoPtr;
1444 UINT new_flags;
1445 BOOL bChangeParams = FALSE; /* don't show/hide scrollbar if params don't change */
1446
1447 *action = 0;
1448
1449 if (!(infoPtr = SCROLL_GetScrollInfo(hwnd, nBar))) return 0;
1450 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1451 if ((info->cbSize != sizeof(*info)) &&
1452 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1453
1454 if (TRACE_ON(scroll))
1455 {
1456 TRACE("hwnd=%04x bar=%d", hwnd, nBar);
1457 if (info->fMask & SIF_PAGE) DPRINTF( " page=%d", info->nPage );
1458 if (info->fMask & SIF_POS) DPRINTF( " pos=%d", info->nPos );
1459 if (info->fMask & SIF_RANGE) DPRINTF( " min=%d max=%d", info->nMin, info->nMax );
1460 DPRINTF("\n");
1461 }
1462
1463 /* Set the page size */
1464
1465 if (info->fMask & SIF_PAGE)
1466 {
1467 if( infoPtr->Page != info->nPage )
1468 {
1469 infoPtr->Page = info->nPage;
1470 *action |= SA_SSI_REFRESH;
1471 bChangeParams = TRUE;
1472 }
1473 }
1474
1475 /* Set the scroll pos */
1476
1477 if (info->fMask & SIF_POS)
1478 {
1479 if( infoPtr->CurVal != info->nPos )
1480 {
1481 infoPtr->CurVal = info->nPos;
1482 *action |= SA_SSI_REFRESH;
1483 }
1484 }
1485
1486 /* Set the scroll range */
1487
1488 if (info->fMask & SIF_RANGE)
1489 {
1490 /* Invalid range -> range is set to (0,0) */
1491 if ((info->nMin > info->nMax) ||
1492 ((UINT)(info->nMax - info->nMin) >= 0x80000000))
1493 {
1494 infoPtr->MinVal = 0;
1495 infoPtr->MaxVal = 0;
1496 bChangeParams = TRUE;
1497 }
1498 else
1499 {
1500 if( infoPtr->MinVal != info->nMin ||
1501 infoPtr->MaxVal != info->nMax )
1502 {
1503 *action |= SA_SSI_REFRESH;
1504 infoPtr->MinVal = info->nMin;
1505 infoPtr->MaxVal = info->nMax;
1506 bChangeParams = TRUE;
1507 }
1508 }
1509 }
1510
1511 /* Make sure the page size is valid */
1512
1513 if (infoPtr->Page < 0) infoPtr->Page = 0;
1514 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1515 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1516
1517 /* Make sure the pos is inside the range */
1518
1519 if (infoPtr->CurVal < infoPtr->MinVal)
1520 infoPtr->CurVal = infoPtr->MinVal;
1521 else if (infoPtr->CurVal > infoPtr->MaxVal - max( infoPtr->Page-1, 0 ))
1522 infoPtr->CurVal = infoPtr->MaxVal - max( infoPtr->Page-1, 0 );
1523
1524 TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1525 infoPtr->Page, infoPtr->CurVal,
1526 infoPtr->MinVal, infoPtr->MaxVal );
1527
1528 /* don't change the scrollbar state if SetScrollInfo
1529 * is just called with SIF_DISABLENOSCROLL
1530 */
1531 if(!(info->fMask & SIF_ALL)) goto done;
1532
1533 /* Check if the scrollbar should be hidden or disabled */
1534
1535 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1536 {
1537 new_flags = infoPtr->flags;
1538 if (infoPtr->MinVal >= infoPtr->MaxVal - max( infoPtr->Page-1, 0 ))
1539 {
1540 /* Hide or disable scroll-bar */
1541 if (info->fMask & SIF_DISABLENOSCROLL)
1542 {
1543 new_flags = ESB_DISABLE_BOTH;
1544 *action |= SA_SSI_REFRESH;
1545 }
1546 else if ((nBar != SB_CTL) && bChangeParams)
1547 {
1548 *action = SA_SSI_HIDE;
1549 goto done;
1550 }
1551 }
1552 else /* Show and enable scroll-bar */
1553 {
1554 new_flags = 0;
1555 if ((nBar != SB_CTL) && bChangeParams)
1556 *action |= SA_SSI_SHOW;
1557 }
1558
1559 if (infoPtr->flags != new_flags) /* check arrow flags */
1560 {
1561 infoPtr->flags = new_flags;
1562 *action |= SA_SSI_REPAINT_ARROWS;
1563 }
1564 }
1565
1566done:
1567 /* Return current position */
1568
1569 return infoPtr->CurVal;
1570}
1571
1572
1573/*************************************************************************
1574 * GetScrollInfo (USER32.@)
1575 * GetScrollInfo can be used to retrieve the position, upper bound,
1576 * lower bound, and page size of a scrollbar control.
1577 *
1578 * RETURNS STD
1579 */
1580BOOL WINAPI GetScrollInfo(
1581 HWND hwnd /* [in] Handle of window */ ,
1582 INT nBar /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */,
1583 LPSCROLLINFO info /* [in/out] (info.fMask [in] specifies which values are to retrieve) */)
1584{
1585 SCROLLBAR_INFO *infoPtr;
1586
1587 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1588 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1589 if ((info->cbSize != sizeof(*info)) &&
1590 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1591
1592 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1593 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1594 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1595 info->nTrackPos = (SCROLL_TrackingWin == WIN_GetFullHandle(hwnd)) ? SCROLL_TrackingVal : infoPtr->CurVal;
1596 if (info->fMask & SIF_RANGE)
1597 {
1598 info->nMin = infoPtr->MinVal;
1599 info->nMax = infoPtr->MaxVal;
1600 }
1601 return (info->fMask & SIF_ALL) != 0;
1602}
1603
1604
1605/*************************************************************************
1606 * SetScrollPos (USER32.@)
1607 *
1608 * RETURNS
1609 * Success: Scrollbar position
1610 * Failure: 0
1611 *
1612 * REMARKS
1613 * Note the ambiguity when 0 is returned. Use GetLastError
1614 * to make sure there was an error (and to know which one).
1615 */
1616INT WINAPI SetScrollPos(
1617HWND hwnd /* [in] Handle of window whose scrollbar will be affected */,
1618INT nBar /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */,
1619INT nPos /* [in] New value */,
1620BOOL bRedraw /* [in] Should scrollbar be redrawn afterwards ? */ )
1621{
1622 SCROLLINFO info;
1623 SCROLLBAR_INFO *infoPtr;
1624 INT oldPos;
1625
1626 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1627 oldPos = infoPtr->CurVal;
1628 info.cbSize = sizeof(info);
1629 info.nPos = nPos;
1630 info.fMask = SIF_POS;
1631 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1632 return oldPos;
1633}
1634
1635
1636/*************************************************************************
1637 * GetScrollPos (USER32.@)
1638 *
1639 * RETURNS
1640 * Success: Current position
1641 * Failure: 0
1642 *
1643 * REMARKS
1644 * Note the ambiguity when 0 is returned. Use GetLastError
1645 * to make sure there was an error (and to know which one).
1646 */
1647INT WINAPI GetScrollPos(
1648HWND hwnd, /* [in] Handle of window */
1649INT nBar /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */)
1650{
1651 SCROLLBAR_INFO *infoPtr;
1652
1653 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1654 return infoPtr->CurVal;
1655}
1656
1657
1658/*************************************************************************
1659 * SetScrollRange (USER32.@)
1660 *
1661 * RETURNS STD
1662 */
1663BOOL WINAPI SetScrollRange(
1664HWND hwnd, /* [in] Handle of window whose scrollbar will be affected */
1665INT nBar, /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */
1666INT MinVal, /* [in] New minimum value */
1667INT MaxVal, /* [in] New maximum value */
1668BOOL bRedraw /* [in] Should scrollbar be redrawn afterwards ? */)
1669{
1670 SCROLLINFO info;
1671
1672 info.cbSize = sizeof(info);
1673 info.nMin = MinVal;
1674 info.nMax = MaxVal;
1675 info.fMask = SIF_RANGE;
1676 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1677 return TRUE;
1678}
1679
1680
1681/*************************************************************************
1682 * SCROLL_SetNCSbState
1683 *
1684 * Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
1685 */
1686INT SCROLL_SetNCSbState(HWND hwnd, int vMin, int vMax, int vPos,
1687 int hMin, int hMax, int hPos)
1688{
1689 INT vA, hA;
1690 SCROLLINFO vInfo, hInfo;
1691
1692 vInfo.cbSize = hInfo.cbSize = sizeof(SCROLLINFO);
1693 vInfo.nMin = vMin;
1694 vInfo.nMax = vMax;
1695 vInfo.nPos = vPos;
1696 hInfo.nMin = hMin;
1697 hInfo.nMax = hMax;
1698 hInfo.nPos = hPos;
1699 vInfo.fMask = hInfo.fMask = SIF_RANGE | SIF_POS;
1700
1701 SCROLL_SetScrollInfo( hwnd, SB_VERT, &vInfo, &vA );
1702 SCROLL_SetScrollInfo( hwnd, SB_HORZ, &hInfo, &hA );
1703
1704 if( !SCROLL_ShowScrollBar( hwnd, SB_BOTH,
1705 (hA & SA_SSI_SHOW),(vA & SA_SSI_SHOW) ) )
1706 {
1707 /* SetWindowPos() wasn't called, just redraw the scrollbars if needed */
1708 if( vA & SA_SSI_REFRESH )
1709 SCROLL_RefreshScrollBar( hwnd, SB_VERT, FALSE, TRUE );
1710
1711 if( hA & SA_SSI_REFRESH )
1712 SCROLL_RefreshScrollBar( hwnd, SB_HORZ, FALSE, TRUE );
1713 }
1714 return 0;
1715}
1716
1717
1718/*************************************************************************
1719 * GetScrollRange (USER32.@)
1720 *
1721 * RETURNS STD
1722 */
1723BOOL WINAPI GetScrollRange(
1724HWND hwnd, /* [in] Handle of window */
1725INT nBar, /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */
1726LPINT lpMin, /* [out] Where to store minimum value */
1727LPINT lpMax /* [out] Where to store maximum value */)
1728{
1729 SCROLLBAR_INFO *infoPtr;
1730
1731 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar )))
1732 {
1733 if (lpMin) lpMin = 0;
1734 if (lpMax) lpMax = 0;
1735 return FALSE;
1736 }
1737 if (lpMin) *lpMin = infoPtr->MinVal;
1738 if (lpMax) *lpMax = infoPtr->MaxVal;
1739 return TRUE;
1740}
1741
1742
1743/*************************************************************************
1744 * SCROLL_ShowScrollBar()
1745 *
1746 * Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
1747 */
1748BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
1749 BOOL fShowH, BOOL fShowV )
1750{
1751 LONG style = GetWindowLongW( hwnd, GWL_STYLE );
1752
1753 TRACE("hwnd=%04x bar=%d horz=%d, vert=%d\n",
1754 hwnd, nBar, fShowH, fShowV );
1755
1756 switch(nBar)
1757 {
1758 case SB_CTL:
1759 ShowWindow( hwnd, fShowH ? SW_SHOW : SW_HIDE );
1760 return TRUE;
1761
1762 case SB_BOTH:
1763 case SB_HORZ:
1764 if (fShowH)
1765 {
1766 fShowH = !(style & WS_HSCROLL);
1767 style |= WS_HSCROLL;
1768 }
1769 else /* hide it */
1770 {
1771 fShowH = (style & WS_HSCROLL);
1772 style &= ~WS_HSCROLL;
1773 }
1774 if( nBar == SB_HORZ ) {
1775 fShowV = FALSE;
1776 break;
1777 }
1778 /* fall through */
1779
1780 case SB_VERT:
1781 if (fShowV)
1782 {
1783 fShowV = !(style & WS_VSCROLL);
1784 style |= WS_VSCROLL;
1785 }
1786 else /* hide it */
1787 {
1788 fShowV = (style & WS_VSCROLL);
1789 style &= ~WS_VSCROLL;
1790 }
1791 if ( nBar == SB_VERT )
1792 fShowH = FALSE;
1793 break;
1794
1795 default:
1796 return FALSE; /* Nothing to do! */
1797 }
1798
1799 if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */
1800 {
1801 WIN_SetStyle( hwnd, style );
1802 SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
1803 | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
1804 return TRUE;
1805 }
1806 return FALSE; /* no frame changes */
1807}
1808
1809
1810/*************************************************************************
1811 * ShowScrollBar (USER32.@)
1812 *
1813 * RETURNS STD
1814 */
1815BOOL WINAPI ShowScrollBar(
1816HWND hwnd, /* [in] Handle of window whose scrollbar(s) will be affected */
1817INT nBar, /* [in] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1818BOOL fShow /* [in] TRUE = show, FALSE = hide */)
1819{
1820 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1821 (nBar == SB_HORZ) ? 0 : fShow );
1822 return TRUE;
1823}
1824
1825
1826/*************************************************************************
1827 * EnableScrollBar (USER32.@)
1828 */
1829BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags )
1830{
1831 BOOL bFineWithMe;
1832 SCROLLBAR_INFO *infoPtr;
1833
1834 TRACE("%04x %d %d\n", hwnd, nBar, flags );
1835
1836 flags &= ESB_DISABLE_BOTH;
1837
1838 if (nBar == SB_BOTH)
1839 {
1840 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_VERT ))) return FALSE;
1841 if (!(bFineWithMe = (infoPtr->flags == flags)) )
1842 {
1843 infoPtr->flags = flags;
1844 SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE );
1845 }
1846 nBar = SB_HORZ;
1847 }
1848 else
1849 bFineWithMe = TRUE;
1850
1851 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1852 if (bFineWithMe && infoPtr->flags == flags) return FALSE;
1853 infoPtr->flags = flags;
1854
1855 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1856 return TRUE;
1857}
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