source: trunk/src/user32/scroll.cpp@ 1333

Last change on this file since 1333 was 1333, checked in by cbratschi, 26 years ago

added WINE scrollbars to frame, fixed pmframe, WM_ENTERIDLE
File size: 58.2 KB
Line 
1/* $Id: scroll.cpp,v 1.9 1999-10-17 12:17:44 cbratschi Exp $ */
2/*
3 * Scrollbar control
4 *
5 * Copyright 1999 Christoph Bratschi
6 *
7 * Copyright 1993 Martin Ayotte
8 * Copyright 1994, 1996 Alexandre Julliard
9 *
10 * WINE version: 990923
11 */
12
13#include <stdlib.h>
14#include <os2win.h>
15#include "controls.h"
16#include "scroll.h"
17#include "win32wbase.h"
18#include "oslibwin.h"
19
20static BOOL bitmapsLoaded = FALSE;
21
22static HBITMAP hUpArrow = 0;
23static HBITMAP hDnArrow = 0;
24static HBITMAP hLfArrow = 0;
25static HBITMAP hRgArrow = 0;
26static HBITMAP hUpArrowD = 0;
27static HBITMAP hDnArrowD = 0;
28static HBITMAP hLfArrowD = 0;
29static HBITMAP hRgArrowD = 0;
30static HBITMAP hUpArrowI = 0;
31static HBITMAP hDnArrowI = 0;
32static HBITMAP hLfArrowI = 0;
33static HBITMAP hRgArrowI = 0;
34
35#define TOP_ARROW(flags,pressed) \
36 (((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
37#define BOTTOM_ARROW(flags,pressed) \
38 (((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
39#define LEFT_ARROW(flags,pressed) \
40 (((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
41#define RIGHT_ARROW(flags,pressed) \
42 (((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
43
44
45 /* Minimum size of the rectangle between the arrows */
46#define SCROLL_MIN_RECT 4
47
48 /* Minimum size of the thumb in pixels */
49#define SCROLL_MIN_THUMB 6
50
51 /* Overlap between arrows and thumb */
52#define SCROLL_ARROW_THUMB_OVERLAP 0
53
54 /* Delay (in ms) before first repetition when holding the button down */
55#define SCROLL_FIRST_DELAY 200
56
57 /* Delay (in ms) between scroll repetitions */
58#define SCROLL_REPEAT_DELAY 50
59
60 /* Scroll timer id */
61#define SCROLL_TIMER 0
62
63 /* Scroll-bar hit testing */
64enum SCROLL_HITTEST
65{
66 SCROLL_NOWHERE, /* Outside the scroll bar */
67 SCROLL_TOP_ARROW, /* Top or left arrow */
68 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
69 SCROLL_THUMB, /* Thumb rectangle */
70 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
71 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
72};
73
74 /* What to do after SCROLL_SetScrollInfo() */
75#define SA_SSI_HIDE 0x0001
76#define SA_SSI_SHOW 0x0002
77#define SA_SSI_REFRESH 0x0004
78#define SA_SSI_REPAINT_ARROWS 0x0008
79
80 /* Thumb-tracking info */
81static HWND SCROLL_TrackingWin = 0;
82static INT SCROLL_TrackingBar = 0;
83static INT SCROLL_TrackingPos = 0;
84static INT SCROLL_TrackingVal = 0;
85 /* Hit test code of the last button-down event */
86static enum SCROLL_HITTEST SCROLL_trackHitTest;
87static BOOL SCROLL_trackVertical;
88
89 /* Is the moving thumb being displayed? */
90static BOOL SCROLL_MovingThumb = FALSE;
91
92 /* Local functions */
93static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
94 BOOL fShowH, BOOL fShowV );
95static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
96 const SCROLLINFO *info, INT *action );
97static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
98 RECT *rect, INT arrowSize,
99 INT thumbSize, INT thumbPos,
100 UINT flags, BOOL vertical,
101 BOOL top_selected, BOOL bottom_selected );
102
103/***********************************************************************
104 * SCROLL_LoadBitmaps
105 */
106static void SCROLL_LoadBitmaps(void)
107{
108 HINSTANCE hinst;
109
110 if (bitmapsLoaded) return;
111
112 //CB: Open32 hack to load our own bitmap
113 hinst = LoadLibraryA("USER32.DLL");
114 hUpArrow = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_UPARROW) );
115 hDnArrow = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_DNARROW) );
116 hLfArrow = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_LFARROW) );
117 hRgArrow = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_RGARROW) );
118 hUpArrowD = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_UPARROWD) );
119 hDnArrowD = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_DNARROWD) );
120 hLfArrowD = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_LFARROWD) );
121 hRgArrowD = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_RGARROWD) );
122 hUpArrowI = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_UPARROWI) );
123 hDnArrowI = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_DNARROWI) );
124 hLfArrowI = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_LFARROWI) );
125 hRgArrowI = NativeLoadBitmap( hinst, MAKEINTRESOURCEA(OBM_RGARROWI) );
126 FreeLibrary(hinst);
127
128 bitmapsLoaded = TRUE;
129}
130
131/***********************************************************************
132 * SCROLL_GetInfoPtr
133 */
134static SCROLLBAR_INFO *SCROLL_GetInfoPtr( HWND hwnd, INT nBar )
135{
136 Win32BaseWindow *win32wnd;
137 HWND hwndFrame;
138
139 switch(nBar)
140 {
141 case SB_HORZ:
142 case SB_VERT:
143 win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
144 if (!win32wnd) return NULL;
145 hwndFrame = OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_PARENT);
146 win32wnd = Win32BaseWindow::GetWindowFromOS2FrameHandle(hwndFrame);
147 if (!win32wnd) return NULL;
148 return win32wnd->getScrollInfo(nBar);
149
150 case SB_CTL:
151 return (SCROLLBAR_INFO*)GetInfoPtr(hwnd);
152 }
153
154 return NULL;
155}
156
157
158/***********************************************************************
159 * SCROLL_GetScrollBarRect
160 *
161 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
162 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
163 * 'arrowSize' returns the width or height of an arrow (depending on
164 * the orientation of the scrollbar), 'thumbSize' returns the size of
165 * the thumb, and 'thumbPos' returns the position of the thumb
166 * relative to the left or to the top.
167 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
168 */
169static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
170 INT *arrowSize, INT *thumbSize,
171 INT *thumbPos )
172{
173 INT pixels;
174 BOOL vertical;
175 RECT rectClient;
176
177 switch(nBar)
178 {
179 case SB_HORZ:
180 case SB_VERT:
181 GetClientRect( hwnd, lprect );
182 vertical = (nBar == SB_VERT);
183 break;
184
185 case SB_CTL:
186 {
187 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
188
189 GetClientRect( hwnd, lprect );
190 vertical = ((dwStyle & SBS_VERT) != 0);
191 break;
192 }
193
194 default:
195 return FALSE;
196 }
197
198 if (vertical) pixels = lprect->bottom - lprect->top;
199 else pixels = lprect->right - lprect->left;
200
201 if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
202 {
203 if (pixels > SCROLL_MIN_RECT)
204 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
205 else
206 *arrowSize = 0;
207 *thumbPos = *thumbSize = 0;
208 }
209 else
210 {
211 SCROLLBAR_INFO *info = SCROLL_GetInfoPtr( hwnd, nBar );
212
213 *arrowSize = GetSystemMetrics(SM_CXVSCROLL);
214 pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
215
216 if (info->Page)
217 {
218 *thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
219 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
220 }
221 else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
222
223 if (((pixels -= *thumbSize ) < 0) ||
224 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
225 {
226 /* Rectangle too small or scrollbar disabled -> no thumb */
227 *thumbPos = *thumbSize = 0;
228 }
229 else
230 {
231 INT max = info->MaxVal - MAX( info->Page-1, 0 );
232 if (info->MinVal >= max)
233 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
234 else
235 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
236 + pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
237 }
238 }
239 return vertical;
240}
241
242
243/***********************************************************************
244 * SCROLL_GetThumbVal
245 *
246 * Compute the current scroll position based on the thumb position in pixels
247 * from the top of the scroll-bar.
248 */
249static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
250 BOOL vertical, INT pos )
251{
252 INT thumbSize;
253 INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
254
255 if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
256 return infoPtr->MinVal;
257
258 if (infoPtr->Page)
259 {
260 thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
261 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
262 }
263 else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
264
265 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
266
267 pos = MAX( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
268 if (pos > pixels) pos = pixels;
269
270 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
271 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
272 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
273}
274
275/***********************************************************************
276 * SCROLL_PtInRectEx
277 */
278static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
279{
280 RECT rect = *lpRect;
281
282 if (vertical)
283 {
284 rect.left -= lpRect->right - lpRect->left;
285 rect.right += lpRect->right - lpRect->left;
286 }
287 else
288 {
289 rect.top -= lpRect->bottom - lpRect->top;
290 rect.bottom += lpRect->bottom - lpRect->top;
291 }
292 return PtInRect( &rect, pt );
293}
294
295/***********************************************************************
296 * SCROLL_ClipPos
297 */
298static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
299{
300 if( pt.x < lpRect->left )
301 pt.x = lpRect->left;
302 else
303 if( pt.x > lpRect->right )
304 pt.x = lpRect->right;
305
306 if( pt.y < lpRect->top )
307 pt.y = lpRect->top;
308 else
309 if( pt.y > lpRect->bottom )
310 pt.y = lpRect->bottom;
311
312 return pt;
313}
314
315
316/***********************************************************************
317 * SCROLL_HitTest
318 *
319 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
320 */
321static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
322 POINT pt, BOOL bDragging )
323{
324 INT arrowSize, thumbSize, thumbPos;
325 RECT rect;
326
327 BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
328 &arrowSize, &thumbSize, &thumbPos );
329
330 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
331 (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
332
333 if (vertical)
334 {
335 if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW;
336 if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
337 if (!thumbPos) return SCROLL_TOP_RECT;
338 pt.y -= rect.top;
339 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
340 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
341 }
342 else /* horizontal */
343 {
344 if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW;
345 if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
346 if (!thumbPos) return SCROLL_TOP_RECT;
347 pt.x -= rect.left;
348 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
349 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
350 }
351 return SCROLL_THUMB;
352}
353
354/***********************************************************************
355 * SCROLL_DrawArrows
356 *
357 * Draw the scroll bar arrows.
358 */
359static void SCROLL_DrawArrows_9x( HDC hdc, SCROLLBAR_INFO *infoPtr,
360 RECT *rect, INT arrowSize, BOOL vertical,
361 BOOL top_pressed, BOOL bottom_pressed )
362{
363 RECT r;
364
365 r = *rect;
366 if( vertical )
367 r.bottom = r.top + arrowSize;
368 else
369 r.right = r.left + arrowSize;
370
371 DrawFrameControl( hdc, &r, DFC_SCROLL,
372 (vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT)
373 | (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
374 | (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) );
375
376 r = *rect;
377 if( vertical )
378 r.top = r.bottom-arrowSize;
379 else
380 r.left = r.right-arrowSize;
381
382 DrawFrameControl( hdc, &r, DFC_SCROLL,
383 (vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT)
384 | (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
385 | (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) );
386}
387//******************************************************************************
388//******************************************************************************
389static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
390 RECT *rect, INT arrowSize, BOOL vertical,
391 BOOL top_pressed, BOOL bottom_pressed )
392{
393 SCROLL_DrawArrows_9x( hdc, infoPtr, rect, arrowSize,
394 vertical, top_pressed,bottom_pressed );
395}
396
397
398/***********************************************************************
399 * SCROLL_DrawMovingThumb
400 *
401 * Draw the moving thumb rectangle.
402 */
403static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
404 INT arrowSize, INT thumbSize )
405{
406 INT pos = SCROLL_TrackingPos;
407 INT max_size;
408
409 if( vertical )
410 max_size = rect->bottom - rect->top;
411 else
412 max_size = rect->right - rect->left;
413
414 max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize;
415
416 if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) )
417 pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP);
418 else if( pos > max_size )
419 pos = max_size;
420
421 SCROLL_DrawInterior_9x( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar,
422 rect, arrowSize, thumbSize, pos,
423 0, vertical, FALSE, FALSE );
424
425 SCROLL_MovingThumb = !SCROLL_MovingThumb;
426}
427/***********************************************************************
428 * SCROLL_DrawInterior
429 *
430 * Draw the scroll bar interior (everything except the arrows).
431 */
432static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
433 RECT *rect, INT arrowSize,
434 INT thumbSize, INT thumbPos,
435 UINT flags, BOOL vertical,
436 BOOL top_selected, BOOL bottom_selected )
437{
438 RECT r;
439 HPEN hSavePen;
440 HBRUSH hSaveBrush,hBrush;
441
442 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
443 * The window-owned scrollbars need to call DEFWND_ControlColor
444 * to correctly setup default scrollbar colors
445 */
446 if (nBar == SB_CTL)
447 {
448 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
449 (WPARAM)hdc,(LPARAM)hwnd);
450 }
451 else
452 {
453 hBrush = (HBRUSH)SendMessageA( hwnd, WM_CTLCOLORSCROLLBAR,
454 (WPARAM)hdc,(LPARAM)hwnd);
455 }
456
457 hSavePen = SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
458 hSaveBrush = SelectObject( hdc, hBrush );
459
460 /* Calculate the scroll rectangle */
461 r = *rect;
462 if (vertical)
463 {
464 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
465 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
466 }
467 else
468 {
469 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
470 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
471 }
472
473 /* Draw the scroll rectangles and thumb */
474 if (!thumbPos) /* No thumb to draw */
475 {
476 PatBlt( hdc, r.left, r.top,
477 r.right - r.left, r.bottom - r.top,
478 PATCOPY );
479
480 /* cleanup and return */
481 SelectObject( hdc, hSavePen );
482 SelectObject( hdc, hSaveBrush );
483 return;
484 }
485
486 if (vertical)
487 {
488 PatBlt( hdc, r.left, r.top,
489 r.right - r.left,
490 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
491 top_selected ? 0x0f0000 : PATCOPY );
492 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
493 PatBlt( hdc, r.left, r.top + thumbSize,
494 r.right - r.left,
495 r.bottom - r.top - thumbSize,
496 bottom_selected ? 0x0f0000 : PATCOPY );
497 r.bottom = r.top + thumbSize;
498 }
499 else /* horizontal */
500 {
501 PatBlt( hdc, r.left, r.top,
502 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
503 r.bottom - r.top,
504 top_selected ? 0x0f0000 : PATCOPY );
505 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
506 PatBlt( hdc, r.left + thumbSize, r.top,
507 r.right - r.left - thumbSize,
508 r.bottom - r.top,
509 bottom_selected ? 0x0f0000 : PATCOPY );
510 r.right = r.left + thumbSize;
511 }
512
513 /* Draw the thumb */
514 DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT | BF_MIDDLE );
515
516 /* cleanup */
517 SelectObject( hdc, hSavePen );
518 SelectObject( hdc, hSaveBrush );
519}
520//******************************************************************************
521//******************************************************************************
522static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
523 RECT *rect, INT arrowSize,
524 INT thumbSize, INT thumbPos,
525 UINT flags, BOOL vertical,
526 BOOL top_selected, BOOL bottom_selected )
527{
528 RECT r;
529 HPEN hSavePen;
530 HBRUSH hSaveBrush,hBrush;
531 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
532
533//SCROLL_DrawInterior_9x(hwnd,hdc,nBar,rect,arrowSize,thumbSize,thumbPos,flags,vertical,top_selected,bottom_selected);
534//return; //CB: improve!
535
536 if (Save_SCROLL_MovingThumb &&
537 (SCROLL_TrackingWin == hwnd) &&
538 (SCROLL_TrackingBar == nBar))
539 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
540
541 /* Select the correct brush and pen */
542
543 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
544 * The window-owned scrollbars need to call DEFWND_ControlColor
545 * to correctly setup default scrollbar colors
546 */
547 if (nBar == SB_CTL) {
548 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
549 (WPARAM)hdc,(LPARAM)hwnd);
550 } else {
551 hBrush = (HBRUSH)SendMessageA( hwnd, WM_CTLCOLORSCROLLBAR,
552 (WPARAM)hdc,(LPARAM)hwnd);
553
554 }
555
556 hSavePen = SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
557 hSaveBrush = SelectObject( hdc, hBrush );
558
559 /* Calculate the scroll rectangle */
560
561 r = *rect;
562 if (vertical)
563 {
564 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
565 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
566 }
567 else
568 {
569 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
570 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
571 }
572
573 /* Draw the scroll bar frame */
574
575 /* Only draw outline if Win 3.1. Mar 24, 1999 - Ronald B. Cemer */
576
577 /* Draw the scroll rectangles and thumb */
578
579 if (!thumbPos) /* No thumb to draw */
580 {
581 INT offset = 0;
582
583 PatBlt( hdc, r.left+offset, r.top+offset,
584 r.right - r.left - 2*offset, r.bottom - r.top - 2*offset,
585 PATCOPY );
586
587 /* cleanup and return */
588 SelectObject( hdc, hSavePen );
589 SelectObject( hdc, hSaveBrush );
590 return;
591 }
592
593 if (vertical)
594 {
595 INT offset = 0;
596
597 PatBlt( hdc, r.left + offset, r.top + offset,
598 r.right - r.left - offset*2,
599 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - offset,
600 top_selected ? 0x0f0000 : PATCOPY );
601 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
602 PatBlt( hdc, r.left + offset, r.top + thumbSize,
603 r.right - r.left - offset*2,
604 r.bottom - r.top - thumbSize - offset,
605 bottom_selected ? 0x0f0000 : PATCOPY );
606 r.bottom = r.top + thumbSize;
607 }
608 else /* horizontal */
609 {
610 INT offset = 0;
611
612 PatBlt( hdc, r.left + offset, r.top + offset,
613 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
614 r.bottom - r.top - offset*2,
615 top_selected ? 0x0f0000 : PATCOPY );
616 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
617 PatBlt( hdc, r.left + thumbSize, r.top + offset,
618 r.right - r.left - thumbSize - offset,
619 r.bottom - r.top - offset*2,
620 bottom_selected ? 0x0f0000 : PATCOPY );
621 r.right = r.left + thumbSize;
622 }
623
624 /* Draw the thumb */
625
626 SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
627
628 Rectangle( hdc, r.left+1, r.top+1, r.right-1, r.bottom-1 );
629
630 DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
631
632 if (Save_SCROLL_MovingThumb &&
633 (SCROLL_TrackingWin == hwnd) &&
634 (SCROLL_TrackingBar == nBar))
635 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
636
637 /* cleanup */
638 SelectObject( hdc, hSavePen );
639 SelectObject( hdc, hSaveBrush );
640}
641/***********************************************************************
642 * SCROLL_DrawScrollBar
643 *
644 * Redraw the whole scrollbar.
645 */
646void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
647 BOOL arrows, BOOL interior )
648{
649 INT arrowSize, thumbSize, thumbPos;
650 RECT rect;
651 BOOL vertical;
652 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr( hwnd, nBar );
653 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
654
655 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
656 &arrowSize, &thumbSize, &thumbPos );
657
658 if (Save_SCROLL_MovingThumb &&
659 (SCROLL_TrackingWin == hwnd) &&
660 (SCROLL_TrackingBar == nBar))
661 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
662
663 /* Draw the arrows */
664
665 if (arrows && arrowSize)
666 {
667 if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
668 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
669 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
670 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
671 else
672 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
673 FALSE, FALSE );
674 }
675 if( interior )
676 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
677 thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
678
679 if (Save_SCROLL_MovingThumb &&
680 (SCROLL_TrackingWin == hwnd) &&
681 (SCROLL_TrackingBar == nBar))
682 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
683
684}
685/***********************************************************************
686 * SCROLL_RefreshScrollBar
687 *
688 * Repaint the scroll bar interior after a SetScrollRange() or
689 * SetScrollPos() call.
690 */
691static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
692 BOOL arrows, BOOL interior )
693{
694 //HDC hdc = GetDCEx( hwnd, 0,
695 // DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
696HDC hdc;
697
698return;
699//CB: bug: paints in client window!
700// GetClientRect returns wrong window size after GetDC
701// why?!?
702
703 if (!hdc) return;
704
705 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
706 ReleaseDC( hwnd, hdc );
707}
708/***********************************************************************
709 * SCROLL_HandleKbdEvent
710 *
711 * Handle a keyboard event (only for SB_CTL scrollbars).
712 */
713static void SCROLL_HandleKbdEvent( HWND hwnd, WPARAM wParam )
714{
715 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
716 WPARAM msg;
717
718 switch(wParam)
719 {
720 case VK_PRIOR: msg = SB_PAGEUP; break;
721 case VK_NEXT: msg = SB_PAGEDOWN; break;
722 case VK_HOME: msg = SB_TOP; break;
723 case VK_END: msg = SB_BOTTOM; break;
724 case VK_UP: msg = SB_LINEUP; break;
725 case VK_DOWN: msg = SB_LINEDOWN; break;
726 default:
727 return;
728 }
729 SendMessageA( GetParent(hwnd),
730 (dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
731 msg, hwnd );
732}
733/***********************************************************************
734 * SCROLL_HandleScrollEvent
735 *
736 * Handle a mouse or timer event for the scrollbar.
737 * 'pt' is the location of the mouse event in client (for SB_CTL) or
738 * windows coordinates.
739 */
740void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt)
741{
742 /* Previous mouse position for timer events */
743 static POINT prevPt;
744 /* Thumb position when tracking started. */
745 static UINT trackThumbPos;
746 /* Position in the scroll-bar of the last button-down event. */
747 static INT lastClickPos;
748 /* Position in the scroll-bar of the last mouse event. */
749 static INT lastMousePos;
750
751 enum SCROLL_HITTEST hittest;
752 HWND hwndOwner, hwndCtl;
753 BOOL vertical;
754 INT arrowSize, thumbSize, thumbPos;
755 RECT rect;
756 HDC hdc;
757
758 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr( hwnd, nBar );
759 if (!infoPtr) return;
760 if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
761 return;
762
763 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
764 &arrowSize, &thumbSize, &thumbPos );
765 if (nBar == SB_CTL) hwndOwner = GetParent(hwnd); else
766 {
767 Win32BaseWindow *win32wnd;
768 HWND hwndFrame;
769
770 win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
771 if (!win32wnd) return;
772 hwndFrame = OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_PARENT);
773 win32wnd = Win32BaseWindow::GetWindowFromOS2FrameHandle(hwndFrame);
774 if (!win32wnd) return;
775 hwndOwner = win32wnd->getWindowHandle();
776 }
777
778 hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
779
780 switch(msg)
781 {
782 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
783 SCROLL_trackVertical = vertical;
784 SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
785 lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
786 lastMousePos = lastClickPos;
787 trackThumbPos = thumbPos;
788 prevPt = pt;
789 SetCapture( hwnd );
790 if (nBar == SB_CTL) SetFocus( hwnd );
791 break;
792
793 case WM_MOUSEMOVE:
794 hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
795 prevPt = pt;
796 break;
797
798 case WM_LBUTTONUP:
799 hittest = SCROLL_NOWHERE;
800 ReleaseCapture();
801 break;
802
803 case WM_SYSTIMER:
804 pt = prevPt;
805 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
806 break;
807
808 default:
809 return; /* Should never happen */
810 }
811
812 hdc = GetDCEx( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
813
814 //TRACE("Event: hwnd=%04x bar=%d msg=%x pt=%ld,%ld hit=%d\n",
815 // hwnd, nBar, msg, pt.x, pt.y, hittest );
816
817 switch(SCROLL_trackHitTest)
818 {
819 case SCROLL_NOWHERE: /* No tracking in progress */
820 break;
821
822 case SCROLL_TOP_ARROW:
823 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
824 (hittest == SCROLL_trackHitTest), FALSE );
825 if (hittest == SCROLL_trackHitTest)
826 {
827 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
828 {
829 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
830 SB_LINEUP, hwndCtl );
831 }
832 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
833 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
834 (TIMERPROC)0 );
835 }
836 else KillSystemTimer( hwnd, SCROLL_TIMER );
837 break;
838
839 case SCROLL_TOP_RECT:
840 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
841 thumbPos, infoPtr->flags, vertical,
842 (hittest == SCROLL_trackHitTest), FALSE );
843 if (hittest == SCROLL_trackHitTest)
844 {
845 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
846 {
847 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
848 SB_PAGEUP, hwndCtl );
849 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
850 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
851 (TIMERPROC)0 );
852 }
853 }
854 else KillSystemTimer( hwnd, SCROLL_TIMER );
855 break;
856
857 case SCROLL_THUMB:
858 if (msg == WM_LBUTTONDOWN)
859 {
860 SCROLL_TrackingWin = hwnd;
861 SCROLL_TrackingBar = nBar;
862 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
863 if (!SCROLL_MovingThumb)
864 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
865 }
866 else if (msg == WM_LBUTTONUP)
867 {
868 if (SCROLL_MovingThumb)
869 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
870 SCROLL_TrackingWin = 0;
871 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
872 thumbPos, infoPtr->flags, vertical,
873 FALSE, FALSE );
874 }
875 else /* WM_MOUSEMOVE */
876 {
877 UINT pos;
878
879 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
880 else
881 {
882 pt = SCROLL_ClipPos( &rect, pt );
883 pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
884 }
885 if ( (pos != lastMousePos) || (!SCROLL_MovingThumb) )
886 {
887 if (SCROLL_MovingThumb)
888 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
889 arrowSize, thumbSize );
890 lastMousePos = pos;
891 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
892 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
893 vertical,
894 SCROLL_TrackingPos );
895 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
896 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
897 hwndCtl );
898 if (!SCROLL_MovingThumb)
899 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
900 arrowSize, thumbSize );
901 }
902 }
903 break;
904
905 case SCROLL_BOTTOM_RECT:
906 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
907 thumbPos, infoPtr->flags, vertical,
908 FALSE, (hittest == SCROLL_trackHitTest) );
909 if (hittest == SCROLL_trackHitTest)
910 {
911 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
912 {
913 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
914 SB_PAGEDOWN, hwndCtl );
915 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
916 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
917 (TIMERPROC)0 );
918 }
919 }
920 else KillSystemTimer( hwnd, SCROLL_TIMER );
921 break;
922
923 case SCROLL_BOTTOM_ARROW:
924 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
925 FALSE, (hittest == SCROLL_trackHitTest) );
926 if (hittest == SCROLL_trackHitTest)
927 {
928 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
929 {
930 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
931 SB_LINEDOWN, hwndCtl );
932 }
933 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
934 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
935 (TIMERPROC)0 );
936 }
937 else KillSystemTimer( hwnd, SCROLL_TIMER );
938 break;
939 }
940
941 if (msg == WM_LBUTTONUP)
942 {
943 hittest = SCROLL_trackHitTest;
944 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
945
946 if (hittest == SCROLL_THUMB)
947 {
948 UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
949 trackThumbPos + lastMousePos - lastClickPos );
950 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
951 MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
952 }
953 else
954 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
955 SB_ENDSCROLL, hwndCtl );
956 }
957
958 ReleaseDC( hwnd, hdc );
959}
960/***********************************************************************
961 * ScrollBarWndProc
962 */
963LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam,
964 LPARAM lParam )
965{
966 switch(message)
967 {
968 case WM_NCCREATE:
969 {
970 SCROLLBAR_INFO *infoPtr = (SCROLLBAR_INFO*)malloc(sizeof(SCROLLBAR_INFO));
971
972 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
973 infoPtr->MaxVal = 100;
974 infoPtr->flags = ESB_ENABLE_BOTH;
975
976 SetInfoPtr(hwnd,(DWORD)infoPtr);
977
978 if (!bitmapsLoaded) SCROLL_LoadBitmaps();
979
980 return TRUE;
981 }
982 case WM_CREATE:
983 {
984 CREATESTRUCTA *lpCreat = (CREATESTRUCTA *)lParam;
985 if (lpCreat->style & SBS_SIZEBOX)
986 {
987 //FIXME("Unimplemented style SBS_SIZEBOX.\n" );
988 return 0; //CB: implement! (for frames/toolbar already done)
989 }
990
991 if (lpCreat->style & SBS_VERT)
992 {
993 if (lpCreat->style & SBS_LEFTALIGN)
994 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
995 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
996 else if (lpCreat->style & SBS_RIGHTALIGN)
997 MoveWindow( hwnd,
998 lpCreat->x+lpCreat->cx-GetSystemMetrics(SM_CXVSCROLL)-1,
999 lpCreat->y,
1000 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
1001 }
1002 else /* SBS_HORZ */
1003 {
1004 if (lpCreat->style & SBS_TOPALIGN)
1005 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
1006 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
1007 else if (lpCreat->style & SBS_BOTTOMALIGN)
1008 MoveWindow( hwnd,
1009 lpCreat->x,
1010 lpCreat->y+lpCreat->cy-GetSystemMetrics(SM_CYHSCROLL)-1,
1011 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
1012 }
1013 }
1014
1015 //TRACE("ScrollBar creation, hwnd=%04x\n", hwnd );
1016 return 0;
1017
1018 case WM_LBUTTONDOWN:
1019 case WM_LBUTTONUP:
1020 case WM_MOUSEMOVE:
1021 case WM_SYSTIMER:
1022 {
1023 POINT pt;
1024 CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
1025 SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
1026 }
1027 break;
1028
1029 case WM_KEYDOWN:
1030 SCROLL_HandleKbdEvent( hwnd, wParam );
1031 break;
1032
1033 case WM_ERASEBKGND:
1034 return 1;
1035
1036 case WM_GETDLGCODE:
1037 return DLGC_WANTARROWS; /* Windows returns this value */
1038
1039 case WM_PAINT:
1040 {
1041 PAINTSTRUCT ps;
1042 HDC hdc = BeginPaint( hwnd, &ps );
1043 SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
1044 EndPaint( hwnd, &ps );
1045 }
1046 break;
1047
1048 case SBM_SETPOS:
1049 return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
1050
1051 case SBM_GETPOS:
1052 return GetScrollPos( hwnd, SB_CTL );
1053
1054 case SBM_SETRANGE:
1055 {
1056 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,SB_CTL);
1057 INT oldPos = infoPtr->CurVal;
1058
1059 SetScrollRange(hwnd,SB_CTL,wParam,lParam,FALSE);
1060 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1061 }
1062
1063 case SBM_GETRANGE:
1064 GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
1065 return 0;
1066
1067 case SBM_ENABLE_ARROWS:
1068 return EnableScrollBar( hwnd, SB_CTL, wParam );
1069
1070 case SBM_SETRANGEREDRAW:
1071 {
1072 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,SB_CTL);
1073 INT oldPos = infoPtr->CurVal;
1074
1075 SetScrollRange(hwnd,SB_CTL,wParam,lParam,TRUE);
1076 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1077 }
1078
1079 case SBM_SETSCROLLINFO:
1080 return SetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
1081
1082 case SBM_GETSCROLLINFO:
1083 return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
1084
1085 case 0x00e5:
1086 case 0x00e7:
1087 case 0x00e8:
1088 case 0x00eb:
1089 case 0x00ec:
1090 case 0x00ed:
1091 case 0x00ee:
1092 case 0x00ef:
1093 //ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
1094 // message, wParam, lParam );
1095 break;
1096
1097 default:
1098 return DefWindowProcA( hwnd, message, wParam, lParam );
1099 }
1100 return 0;
1101}
1102
1103/* frame handlers */
1104
1105VOID SCROLL_SubclassScrollBars(HWND hwndHorz,HWND hwndVert)
1106{
1107 if (hwndHorz)
1108 {
1109 SetWindowLongA(hwndHorz,GWL_WNDPROC,(ULONG)HorzScrollBarWndProc);
1110 //windowClass = Win32WndClass::FindClass(cs->hInstance, (LPSTR)classAtom);
1111// InvalidateRect(hwndHorz,NULL,FALSE);
1112 }
1113
1114 if (hwndVert)
1115 {
1116 SetWindowLongA(hwndVert,GWL_WNDPROC,(ULONG)VertScrollBarWndProc);
1117// InvalidateRect(hwndVert,NULL,FALSE);
1118 }
1119
1120 if (!bitmapsLoaded) SCROLL_LoadBitmaps();
1121}
1122
1123LRESULT WINAPI HorzScrollBarWndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam )
1124{
1125 switch (message)
1126 {
1127 case WM_LBUTTONDOWN:
1128 case WM_LBUTTONUP:
1129 case WM_MOUSEMOVE:
1130 case WM_SYSTIMER:
1131 {
1132 POINT pt;
1133 CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
1134 SCROLL_HandleScrollEvent( hwnd, SB_HORZ, message, pt );
1135 }
1136 break;
1137
1138 case WM_ERASEBKGND:
1139 return 1;
1140
1141 case WM_GETDLGCODE:
1142 return DLGC_WANTARROWS; /* Windows returns this value */
1143
1144 case WM_PAINT:
1145 {
1146 PAINTSTRUCT ps;
1147
1148 HDC hdc = BeginPaint( hwnd, &ps );
1149 SCROLL_DrawScrollBar( hwnd, hdc, SB_HORZ, TRUE, TRUE );
1150 EndPaint( hwnd, &ps );
1151 }
1152 break;
1153
1154 case SBM_SETPOS:
1155 return SetScrollPos( hwnd, SB_HORZ, wParam, (BOOL)lParam );
1156
1157 case SBM_GETPOS:
1158 return GetScrollPos( hwnd, SB_HORZ );
1159
1160 case SBM_SETRANGE:
1161 {
1162 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,SB_HORZ);
1163 INT oldPos = infoPtr->CurVal;
1164
1165 SetScrollRange(hwnd,SB_HORZ,wParam,lParam,FALSE);
1166 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1167 }
1168
1169 case SBM_GETRANGE:
1170 GetScrollRange( hwnd, SB_HORZ, (LPINT)wParam, (LPINT)lParam );
1171 return 0;
1172
1173 case SBM_ENABLE_ARROWS:
1174 return EnableScrollBar( hwnd, SB_HORZ, wParam );
1175
1176 case SBM_SETRANGEREDRAW:
1177 {
1178 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,SB_HORZ);
1179 INT oldPos = infoPtr->CurVal;
1180
1181 SetScrollRange(hwnd,SB_HORZ,wParam,lParam,TRUE);
1182 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1183 }
1184
1185 case SBM_SETSCROLLINFO:
1186 return SetScrollInfo( hwnd, SB_HORZ, (SCROLLINFO *)lParam, wParam );
1187
1188 case SBM_GETSCROLLINFO:
1189 return GetScrollInfo( hwnd, SB_HORZ, (SCROLLINFO *)lParam );
1190
1191 default:
1192 return DefWindowProcA(hwnd,message,wParam,lParam);
1193 }
1194
1195 return 0;
1196}
1197
1198LRESULT WINAPI VertScrollBarWndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam )
1199{
1200 switch (message)
1201 {
1202 case WM_LBUTTONDOWN:
1203 case WM_LBUTTONUP:
1204 case WM_MOUSEMOVE:
1205 case WM_SYSTIMER:
1206 {
1207 POINT pt;
1208 CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
1209 SCROLL_HandleScrollEvent( hwnd, SB_VERT, message, pt );
1210 }
1211 break;
1212
1213 case WM_ERASEBKGND:
1214 return 1;
1215
1216 case WM_GETDLGCODE:
1217 return DLGC_WANTARROWS; /* Windows returns this value */
1218
1219 case WM_PAINT:
1220 {
1221 PAINTSTRUCT ps;
1222
1223 HDC hdc = BeginPaint( hwnd, &ps );
1224 SCROLL_DrawScrollBar( hwnd, hdc, SB_VERT, TRUE, TRUE );
1225 EndPaint( hwnd, &ps );
1226 }
1227 break;
1228
1229 case SBM_SETPOS:
1230 return SetScrollPos( hwnd, SB_VERT, wParam, (BOOL)lParam );
1231
1232 case SBM_GETPOS:
1233 return GetScrollPos( hwnd, SB_VERT );
1234
1235 case SBM_SETRANGE:
1236 {
1237 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,SB_VERT);
1238 INT oldPos = infoPtr->CurVal;
1239
1240 SetScrollRange(hwnd,SB_VERT,wParam,lParam,FALSE);
1241 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1242 }
1243
1244 case SBM_GETRANGE:
1245 GetScrollRange( hwnd, SB_VERT, (LPINT)wParam, (LPINT)lParam );
1246 return 0;
1247
1248 case SBM_ENABLE_ARROWS:
1249 return EnableScrollBar( hwnd, SB_VERT, wParam );
1250
1251 case SBM_SETRANGEREDRAW:
1252 {
1253 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,SB_VERT);
1254 INT oldPos = infoPtr->CurVal;
1255
1256 SetScrollRange(hwnd,SB_VERT,wParam,lParam,TRUE);
1257 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1258 }
1259
1260 case SBM_SETSCROLLINFO:
1261 return SetScrollInfo( hwnd, SB_VERT, (SCROLLINFO *)lParam, wParam );
1262
1263 case SBM_GETSCROLLINFO:
1264 return GetScrollInfo( hwnd, SB_VERT, (SCROLLINFO *)lParam );
1265
1266 default:
1267 return DefWindowProcA(hwnd,message,wParam,lParam);
1268 }
1269
1270 return 0;
1271}
1272
1273
1274/*************************************************************************
1275 * SetScrollInfo32 (USER32.501)
1276 * SetScrollInfo32 can be used to set the position, upper bound,
1277 * lower bound, and page size of a scrollbar control.
1278 *
1279 * RETURNS
1280 * Scrollbar position
1281 *
1282 * NOTE
1283 * For 100 lines of text to be displayed in a window of 25 lines,
1284 * one would for instance use info->nMin=0, info->nMax=75
1285 * (corresponding to the 76 different positions of the window on
1286 * the text), and info->nPage=25.
1287 */
1288INT WINAPI SetScrollInfo(
1289 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1290 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1291 const SCROLLINFO *info /* [I] Specifies what to change and new values */,
1292 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1293{
1294 Win32BaseWindow *window;
1295 INT action;
1296 INT retVal;
1297
1298/* CB: handled here, todo: hide/show
1299 window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1300 if(!window && nBar != SB_CTL) {
1301 dprintf(("SetScrollInfo window not found!"));
1302 SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1303 return FALSE;
1304 }
1305 if(window) {
1306 return window->setScrollInfo(nBar, (SCROLLINFO *)info, bRedraw);
1307 }
1308*/
1309
1310 retVal = SCROLL_SetScrollInfo( hwnd, nBar, info, &action );
1311 if( action & SA_SSI_HIDE )
1312 SCROLL_ShowScrollBar( hwnd, nBar, FALSE, FALSE );
1313 else
1314 {
1315 if( action & SA_SSI_SHOW )
1316 if( SCROLL_ShowScrollBar( hwnd, nBar, TRUE, TRUE ) )
1317 return retVal; /* SetWindowPos() already did the painting */
1318
1319 if( bRedraw && (action & SA_SSI_REFRESH))
1320 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1321 else if( action & SA_SSI_REPAINT_ARROWS )
1322 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE );
1323 }
1324 return retVal;
1325}
1326//******************************************************************************
1327//******************************************************************************
1328INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
1329 const SCROLLINFO *info, INT *action )
1330{
1331 /* Update the scrollbar state and set action flags according to
1332 * what has to be done graphics wise. */
1333
1334 SCROLLBAR_INFO *infoPtr;
1335 UINT new_flags;
1336
1337 *action = 0;
1338
1339 if (!(infoPtr = SCROLL_GetInfoPtr(hwnd, nBar))) return 0;
1340 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1341 if ((info->cbSize != sizeof(*info)) &&
1342 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1343
1344 /* Set the page size */
1345 if (info->fMask & SIF_PAGE)
1346 {
1347 if( infoPtr->Page != info->nPage )
1348 {
1349 infoPtr->Page = info->nPage;
1350 *action |= SA_SSI_REFRESH;
1351 }
1352 }
1353
1354 /* Set the scroll pos */
1355 if (info->fMask & SIF_POS)
1356 {
1357 //dsprintf(scroll, " pos=%d", info->nPos );
1358 if( infoPtr->CurVal != info->nPos )
1359 {
1360 infoPtr->CurVal = info->nPos;
1361 *action |= SA_SSI_REFRESH;
1362 }
1363 }
1364
1365 /* Set the scroll range */
1366 if (info->fMask & SIF_RANGE)
1367 {
1368 /* Invalid range -> range is set to (0,0) */
1369 if ((info->nMin > info->nMax) ||
1370 ((UINT)(info->nMax - info->nMin) >= 0x80000000))
1371 {
1372 infoPtr->MinVal = 0;
1373 infoPtr->MaxVal = 0;
1374 }
1375 else
1376 {
1377 if( infoPtr->MinVal != info->nMin ||
1378 infoPtr->MaxVal != info->nMax )
1379 {
1380 *action |= SA_SSI_REFRESH;
1381 infoPtr->MinVal = info->nMin;
1382 infoPtr->MaxVal = info->nMax;
1383 }
1384 }
1385 }
1386
1387 /* Make sure the page size is valid */
1388
1389 if (infoPtr->Page < 0) infoPtr->Page = 0;
1390 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1391 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1392
1393 /* Make sure the pos is inside the range */
1394
1395 if (infoPtr->CurVal < infoPtr->MinVal)
1396 infoPtr->CurVal = infoPtr->MinVal;
1397 else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1398 infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
1399
1400 //TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1401 // infoPtr->Page, infoPtr->CurVal,
1402 // infoPtr->MinVal, infoPtr->MaxVal );
1403
1404 /* Check if the scrollbar should be hidden or disabled */
1405 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1406 {
1407 new_flags = infoPtr->flags;
1408 if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1409 {
1410 /* Hide or disable scroll-bar */
1411 if (info->fMask & SIF_DISABLENOSCROLL)
1412 {
1413 new_flags = ESB_DISABLE_BOTH;
1414 *action |= SA_SSI_REFRESH;
1415 }
1416 else if (nBar != SB_CTL)
1417 {
1418 *action = SA_SSI_HIDE;
1419 goto done;
1420 }
1421 }
1422 else /* Show and enable scroll-bar */
1423 {
1424 new_flags = 0;
1425 if (nBar != SB_CTL)
1426 *action |= SA_SSI_SHOW;
1427 }
1428
1429 if (infoPtr->flags != new_flags) /* check arrow flags */
1430 {
1431 infoPtr->flags = new_flags;
1432 *action |= SA_SSI_REPAINT_ARROWS;
1433 }
1434 }
1435
1436done:
1437 /* Return current position */
1438
1439 return infoPtr->CurVal;
1440}
1441/*************************************************************************
1442 * GetScrollInfo32 (USER32.284)
1443 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1444 * lower bound, and page size of a scrollbar control.
1445 *
1446 * RETURNS STD
1447 */
1448BOOL WINAPI GetScrollInfo(
1449 HWND hwnd /* [I] Handle of window */ ,
1450 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1451 LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1452{
1453 SCROLLBAR_INFO *infoPtr;
1454
1455 if (!(infoPtr = SCROLL_GetInfoPtr( hwnd, nBar ))) return FALSE;
1456 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1457 if ((info->cbSize != sizeof(*info)) &&
1458 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1459
1460 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1461 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1462 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1463 info->nTrackPos = (SCROLL_TrackingWin==hwnd) ? SCROLL_TrackingVal : infoPtr->CurVal;
1464 if (info->fMask & SIF_RANGE)
1465 {
1466 info->nMin = infoPtr->MinVal;
1467 info->nMax = infoPtr->MaxVal;
1468 }
1469 return (info->fMask & SIF_ALL) != 0;
1470}
1471/*************************************************************************
1472 * SetScrollPos32 (USER32.502)
1473 *
1474 * RETURNS
1475 * Success: Scrollbar position
1476 * Failure: 0
1477 *
1478 * REMARKS
1479 * Note the ambiguity when 0 is returned. Use GetLastError
1480 * to make sure there was an error (and to know which one).
1481 */
1482INT WINAPI SetScrollPos(
1483 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1484 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1485 INT nPos /* [I] New value */,
1486 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
1487{
1488 SCROLLINFO info;
1489 SCROLLBAR_INFO *infoPtr;
1490 INT oldPos;
1491
1492 dprintf(("SetScrollPos %x %d %d %d", hwnd, nBar, nPos, bRedraw));
1493 if (!(infoPtr = SCROLL_GetInfoPtr( hwnd, nBar ))) return 0;
1494 oldPos = infoPtr->CurVal;
1495 info.cbSize = sizeof(info);
1496 info.nPos = nPos;
1497 info.fMask = SIF_POS;
1498 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1499 return oldPos;
1500}
1501/*************************************************************************
1502 * GetScrollPos32 (USER32.285)
1503 *
1504 * RETURNS
1505 * Success: Current position
1506 * Failure: 0
1507 *
1508 * REMARKS
1509 * Note the ambiguity when 0 is returned. Use GetLastError
1510 * to make sure there was an error (and to know which one).
1511 */
1512INT WINAPI GetScrollPos(
1513 HWND hwnd, /* [I] Handle of window */
1514 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1515{
1516 SCROLLBAR_INFO *infoPtr;
1517
1518 dprintf(("GetScrollPos %x %d", hwnd, nBar));
1519
1520 infoPtr = SCROLL_GetInfoPtr( hwnd, nBar );
1521 if (!infoPtr) return 0;
1522
1523 return infoPtr->CurVal;
1524}
1525/*************************************************************************
1526 * SetScrollRange32 (USER32.503)
1527 *
1528 * RETURNS STD
1529 */
1530BOOL WINAPI SetScrollRange(
1531 HWND hwnd, /* [I] Handle of window whose scrollbar will be affected */
1532 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1533 INT MinVal, /* [I] New minimum value */
1534 INT MaxVal, /* [I] New maximum value */
1535 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1536{
1537 SCROLLINFO info;
1538
1539 dprintf(("SetScrollRange %x %x %d %d %d", hwnd, nBar, MinVal, MaxVal, bRedraw));
1540 info.cbSize = sizeof(info);
1541 info.nMin = MinVal;
1542 info.nMax = MaxVal;
1543 info.fMask = SIF_RANGE;
1544 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1545 return TRUE;
1546}
1547/*************************************************************************
1548 * SCROLL_SetNCSbState
1549 *
1550 * Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
1551 */
1552INT SCROLL_SetNCSbState(HWND hwnd, int vMin, int vMax, int vPos,
1553 int hMin, int hMax, int hPos)
1554{
1555 INT vA, hA;
1556 SCROLLINFO vInfo, hInfo;
1557
1558 vInfo.cbSize = hInfo.cbSize = sizeof(SCROLLINFO);
1559 vInfo.nMin = vMin; hInfo.nMin = hMin;
1560 vInfo.nMax = vMax; hInfo.nMax = hMax;
1561 vInfo.nPos = vPos; hInfo.nPos = hPos;
1562 vInfo.fMask = hInfo.fMask = SIF_RANGE | SIF_POS;
1563
1564 SCROLL_SetScrollInfo( hwnd, SB_VERT, &vInfo, &vA );
1565 SCROLL_SetScrollInfo( hwnd, SB_HORZ, &hInfo, &hA );
1566
1567 if( !SCROLL_ShowScrollBar( hwnd, SB_BOTH,
1568 (hA & SA_SSI_SHOW),(vA & SA_SSI_SHOW) ) )
1569 {
1570 /* SetWindowPos() wasn't called, just redraw the scrollbars if needed */
1571 if( vA & SA_SSI_REFRESH )
1572 SCROLL_RefreshScrollBar( hwnd, SB_VERT, FALSE, TRUE );
1573
1574 if( hA & SA_SSI_REFRESH )
1575 SCROLL_RefreshScrollBar( hwnd, SB_HORZ, FALSE, TRUE );
1576 }
1577 return 0;
1578}
1579
1580
1581/*************************************************************************
1582 * GetScrollRange32 (USER32.286)
1583 *
1584 * RETURNS STD
1585 */
1586BOOL WINAPI GetScrollRange(
1587 HWND hwnd, /* [I] Handle of window */
1588 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1589 LPINT lpMin, /* [O] Where to store minimum value */
1590 LPINT lpMax /* [O] Where to store maximum value */)
1591{
1592 SCROLLBAR_INFO *infoPtr;
1593
1594 infoPtr = SCROLL_GetInfoPtr( hwnd, nBar );
1595 if (!infoPtr)
1596 {
1597 if (lpMin) lpMin = 0;
1598 if (lpMax) lpMax = 0;
1599 return FALSE;
1600 }
1601 if (lpMin) *lpMin = infoPtr->MinVal;
1602 if (lpMax) *lpMax = infoPtr->MaxVal;
1603 return TRUE;
1604}
1605/*************************************************************************
1606 * SCROLL_ShowScrollBar()
1607 *
1608 * Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
1609 * NOTE: fShowV/fShowH must be zero when nBar is SB_HORZ/SB_VERT.
1610 */
1611BOOL SCROLL_ShowScrollBar(HWND hwnd, INT nBar,
1612 BOOL fShowH, BOOL fShowV )
1613{
1614 BOOL retvalue = FALSE;
1615 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
1616
1617 //TRACE("hwnd=%04x bar=%d horz=%d, vert=%d\n",
1618 // hwnd, nBar, fShowH, fShowV );
1619
1620 switch(nBar)
1621 {
1622 case SB_CTL:
1623 ShowWindow( hwnd, fShowH ? SW_SHOW : SW_HIDE );
1624 retvalue = TRUE;
1625 goto END;
1626
1627 case SB_BOTH:
1628 case SB_HORZ:
1629 if (fShowH)
1630 {
1631 fShowH = !(dwStyle & WS_HSCROLL);
1632 dwStyle |= WS_HSCROLL;
1633 }
1634 else /* hide it */
1635 {
1636 fShowH = (dwStyle & WS_HSCROLL);
1637 dwStyle &= ~WS_HSCROLL;
1638 }
1639 SetWindowLongA(hwnd,GWL_STYLE,dwStyle);
1640 if( nBar == SB_HORZ ) {
1641 fShowV = FALSE;
1642 break;
1643 }
1644 /* fall through */
1645
1646 case SB_VERT:
1647 if (fShowV)
1648 {
1649 fShowV = !(dwStyle & WS_VSCROLL);
1650 dwStyle |= WS_VSCROLL;
1651 }
1652 else /* hide it */
1653 {
1654 fShowV = (dwStyle & WS_VSCROLL);
1655 dwStyle &= ~WS_VSCROLL;
1656 }
1657 SetWindowLongA(hwnd,GWL_STYLE,dwStyle);
1658 if ( nBar == SB_VERT )
1659 fShowH = FALSE;
1660 break;
1661
1662 default:
1663 retvalue = FALSE; /* Nothing to do! */
1664 goto END;
1665 }
1666
1667 if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */
1668 {
1669 SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
1670 | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
1671 retvalue = TRUE;
1672 goto END;
1673 }
1674
1675 retvalue = FALSE; /* no frame changes */
1676END:
1677 return retvalue;
1678}
1679
1680
1681/*************************************************************************
1682 * ShowScrollBar32 (USER32.532)
1683 *
1684 * RETURNS STD
1685 */
1686BOOL WINAPI ShowScrollBar(
1687 HWND hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
1688 INT nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1689 BOOL fShow /* [I] TRUE = show, FALSE = hide */)
1690{
1691 Win32BaseWindow *window;
1692
1693 dprintf(("ShowScrollBar %04x %d %d\n", hwnd, nBar, fShow));
1694
1695 window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1696 if(!window && nBar != SB_CTL) {
1697 dprintf(("ShowScrollBar window not found!"));
1698 SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1699 return 0;
1700 }
1701 if(nBar != SB_CTL || (window->getStyle() & (WM_HSCROLL|WM_VSCROLL) != 0))
1702 {
1703 BOOL rc;
1704
1705 if(nBar == SB_HORZ || nBar == SB_BOTH)
1706 rc = OSLibWinShowScrollBar(window->getOS2FrameWindowHandle(),
1707 window->getHorzScrollHandle(),
1708 OSLIB_HSCROLL, fShow);
1709
1710 if(nBar == SB_VERT || ( rc == TRUE && nBar == SB_BOTH))
1711 rc = OSLibWinShowScrollBar(window->getOS2FrameWindowHandle(),
1712 window->getVertScrollHandle(),
1713 OSLIB_VSCROLL, fShow);
1714
1715 return rc;
1716 }
1717
1718 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1719 (nBar == SB_HORZ) ? 0 : fShow );
1720 return TRUE;
1721}
1722/*************************************************************************
1723 * EnableScrollBar32 (USER32.171)
1724 */
1725BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags)
1726{
1727 Win32BaseWindow *window;
1728 BOOL bFineWithMe;
1729 SCROLLBAR_INFO *infoPtr;
1730
1731 dprintf(("EnableScrollBar %04x %d %d\n", hwnd, nBar, flags));
1732
1733 window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1734 if(!window && nBar != SB_CTL) {
1735 dprintf(("EnableScrollBar window not found!"));
1736 SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1737 return 0;
1738 }
1739 if(nBar != SB_CTL || (window->getStyle() & (WM_HSCROLL|WM_VSCROLL) != 0))
1740 {
1741 BOOL fEnable, rc;
1742
1743 //hwnd = parent window with default scrollbar(s)
1744 switch(flags) {
1745 case ESB_ENABLE_BOTH:
1746 fEnable = TRUE;
1747 break;
1748 case ESB_DISABLE_BOTH:
1749 case ESB_DISABLE_RTDN:
1750 case ESB_DISABLE_LTUP:
1751 fEnable = FALSE;
1752 break;
1753 default:
1754 SetLastError(ERROR_INVALID_PARAMETER);
1755 return 0;
1756 }
1757 if(nBar == SB_HORZ || nBar == SB_BOTH)
1758 rc = OSLibWinEnableScrollBar(window->getOS2FrameWindowHandle(), OSLIB_HSCROLL, fEnable);
1759
1760 if(nBar == SB_VERT || ( rc == TRUE && nBar == SB_BOTH))
1761 rc = OSLibWinEnableScrollBar(window->getOS2FrameWindowHandle(), OSLIB_VSCROLL, fEnable);
1762
1763 return rc;
1764 }
1765 flags &= ESB_DISABLE_BOTH;
1766
1767 if (nBar == SB_BOTH)
1768 {
1769 if (!(infoPtr = SCROLL_GetInfoPtr( hwnd, SB_VERT ))) return FALSE;
1770 if (!(bFineWithMe = (infoPtr->flags == flags)) )
1771 {
1772 infoPtr->flags = flags;
1773 SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE );
1774 }
1775 nBar = SB_HORZ;
1776 }
1777 else
1778 bFineWithMe = TRUE;
1779
1780 if (!(infoPtr = SCROLL_GetInfoPtr( hwnd, nBar ))) return FALSE;
1781 if (bFineWithMe && infoPtr->flags == flags) return FALSE;
1782 infoPtr->flags = flags;
1783
1784 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1785 return TRUE;
1786}
1787//******************************************************************************
1788//******************************************************************************
1789BOOL SCROLLBAR_Register()
1790{
1791 WNDCLASSA wndClass;
1792
1793 if (GlobalFindAtomA(SCROLLBARCLASSNAME)) return FALSE;
1794
1795 ZeroMemory(&wndClass,sizeof(WNDCLASSA));
1796 wndClass.style = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW | CS_PARENTDC;
1797 wndClass.lpfnWndProc = (WNDPROC)ScrollBarWndProc;
1798 wndClass.cbClsExtra = 0;
1799 wndClass.cbWndExtra = sizeof(SCROLLBAR_INFO);
1800 wndClass.hCursor = LoadCursorA(0,IDC_ARROWA);
1801 wndClass.hbrBackground = (HBRUSH)0;
1802 wndClass.lpszClassName = SCROLLBARCLASSNAME;
1803
1804 return RegisterClassA(&wndClass);
1805}
1806//******************************************************************************
1807//******************************************************************************
1808BOOL SCROLLBAR_Unregister()
1809{
1810 if (GlobalFindAtomA(SCROLLBARCLASSNAME))
1811 return UnregisterClassA(SCROLLBARCLASSNAME,(HINSTANCE)NULL);
1812 else return FALSE;
1813}
1814//******************************************************************************
1815//******************************************************************************
1816
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