source: trunk/src/user32/scroll.cpp@ 2093

Last change on this file since 2093 was 2093, checked in by cbratschi, 26 years ago

text output changes, desktop WM_GETTEXT fixed, scrollbar DC changes
File size: 54.4 KB
Line 
1/* $Id: scroll.cpp,v 1.28 1999-12-16 16:53:57 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: 991031
11 *
12 * Status: complete
13 * Version: 5.00
14 */
15
16#include <stdlib.h>
17#include <os2win.h>
18#include "controls.h"
19#include "scroll.h"
20#include "win32wbase.h"
21#include "oslibwin.h"
22#include "initterm.h"
23#include "pmframe.h"
24
25#define SCROLL_MIN_RECT 4 /* Minimum size of the rectangle between the arrows */
26#define SCROLL_MIN_THUMB 6 /* Minimum size of the thumb in pixels */
27
28#define SCROLL_ARROW_THUMB_OVERLAP 0 /* Overlap between arrows and thumb */
29
30#define SCROLL_FIRST_DELAY 200 /* Delay (in ms) before first repetition when holding the button down */
31#define SCROLL_REPEAT_DELAY 50 /* Delay (in ms) between scroll repetitions */
32#define SCROLL_BLINK_DELAY 1000
33
34#define SCROLL_TIMER 0 /* Scroll timer id */
35#define BLINK_TIMER 1
36
37 /* Scroll-bar hit testing */
38enum SCROLL_HITTEST
39{
40 SCROLL_NOWHERE, /* Outside the scroll bar */
41 SCROLL_TOP_ARROW, /* Top or left arrow */
42 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
43 SCROLL_THUMB, /* Thumb rectangle */
44 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
45 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
46};
47
48 /* What to do in SetScrollInfo() */
49#define SA_SSI_HIDE 0x0001
50#define SA_SSI_SHOW 0x0002
51#define SA_SSI_REPAINT_INTERIOR 0x0004
52#define SA_SSI_REPAINT_ARROWS 0x0008
53#define SA_SSI_MOVE_THUMB 0x0010
54#define SA_SSI_REFRESH 0x0020
55
56 /* Thumb-tracking info */
57static HWND SCROLL_TrackingWin = 0;
58static INT SCROLL_TrackingBar = 0;
59static INT SCROLL_TrackingPos = 0;
60static INT SCROLL_TrackingVal = 0;
61 /* Focus info */
62static HWND SCROLL_FocusWin = 0;
63static BOOL SCROLL_HasFocus = FALSE;
64static BOOL SCROLL_Highlighted = FALSE;
65static BOOL SCROLL_Scrolling = FALSE;
66
67 /* Hit test code of the last button-down event */
68static enum SCROLL_HITTEST SCROLL_trackHitTest;
69static enum SCROLL_HITTEST SCROLL_lastHitTest;
70static BOOL SCROLL_trackVertical;
71
72 /* Is the moving thumb being displayed? */
73static BOOL SCROLL_MovingThumb = FALSE;
74
75// Get the scrollbar handle: works only with frame/control handles
76
77static HWND SCROLL_GetScrollHandle(HWND hwnd,INT nBar)
78{
79 switch(nBar)
80 {
81 case SB_HORZ:
82 case SB_VERT:
83 {
84 Win32BaseWindow *win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
85
86 if (!win32wnd) return 0;
87//CB: I removed WS_* check due to problems, but it should work
88 if (nBar == SB_HORZ)
89 return /*(win32wnd->getStyle() & WS_HSCROLL) ?*/ Win32BaseWindow::OS2ToWin32Handle(win32wnd->getHorzScrollHandle())/*:0*/;
90 else
91 return /*(win32wnd->getStyle() & WS_VSCROLL) ?*/ Win32BaseWindow::OS2ToWin32Handle(win32wnd->getVertScrollHandle())/*:0*/;
92 }
93
94 case SB_CTL:
95 return hwnd;
96
97 default:
98 return 0;
99 }
100}
101
102static HWND SCROLL_GetFrameHandle(HWND hwnd)
103{
104 Win32BaseWindow *win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
105
106 if (!win32wnd) return 0;
107 return Win32BaseWindow::GetWindowFromOS2FrameHandle(OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_OWNER))->getWindowHandle();
108}
109
110// Get the infoPtr: works only with scrollbar handles
111
112static SCROLLBAR_INFO *SCROLL_GetInfoPtr( HWND hwnd, INT nBar )
113{
114 Win32BaseWindow *win32wnd;
115 HWND hwndFrame;
116
117 switch(nBar)
118 {
119 case SB_HORZ:
120 case SB_VERT:
121 win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
122 if (!win32wnd) return NULL;
123 hwndFrame = OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_OWNER);
124 win32wnd = Win32BaseWindow::GetWindowFromOS2FrameHandle(hwndFrame);
125 if (!win32wnd) return NULL;
126 return win32wnd->getScrollInfo(nBar);
127
128 case SB_CTL:
129 return (SCROLLBAR_INFO*)GetInfoPtr(hwnd);
130 }
131
132 return NULL;
133}
134
135/* Scrollbar Functions */
136
137/***********************************************************************
138 * SCROLL_GetScrollBarRect
139 *
140 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
141 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
142 * 'arrowSize' returns the width or height of an arrow (depending on
143 * the orientation of the scrollbar), 'thumbSize' returns the size of
144 * the thumb, and 'thumbPos' returns the position of the thumb
145 * relative to the left or to the top.
146 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
147 */
148static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
149 INT *arrowSize, INT *thumbSize,
150 INT *thumbPos )
151{
152 INT pixels;
153 BOOL vertical;
154 RECT rectClient;
155
156 switch(nBar)
157 {
158 case SB_HORZ:
159 case SB_VERT:
160 GetClientRect( hwnd, lprect );
161 vertical = (nBar == SB_VERT);
162 break;
163
164 case SB_CTL:
165 {
166 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
167
168 GetClientRect( hwnd, lprect );
169 vertical = ((dwStyle & SBS_VERT) != 0);
170 break;
171 }
172
173 default:
174 return FALSE;
175 }
176
177 if (vertical) pixels = lprect->bottom - lprect->top;
178 else pixels = lprect->right - lprect->left;
179
180 if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
181 {
182 if (pixels > SCROLL_MIN_RECT)
183 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
184 else
185 *arrowSize = 0;
186 *thumbPos = *thumbSize = 0;
187 }
188 else
189 {
190 SCROLLBAR_INFO *info = SCROLL_GetInfoPtr( hwnd, nBar );
191
192 *arrowSize = GetSystemMetrics(SM_CXVSCROLL);
193 pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
194
195 if (info->Page)
196 {
197 *thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
198 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
199 }
200 else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
201
202 if (((pixels -= *thumbSize ) < 0) ||
203 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
204 {
205 /* Rectangle too small or scrollbar disabled -> no thumb */
206 *thumbPos = *thumbSize = 0;
207 }
208 else
209 {
210 INT max = info->MaxVal - MAX( info->Page-1, 0 );
211 if (info->MinVal >= max)
212 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
213 else
214 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
215 + pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
216 }
217 }
218 return vertical;
219}
220
221/***********************************************************************
222 * SCROLL_PtInRectEx
223 */
224static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
225{
226 RECT rect = *lpRect;
227
228 if (vertical)
229 {
230 INT w = lpRect->right-lpRect->left;
231
232 rect.left -= w;
233 rect.right += w;
234 rect.top -= w;
235 rect.bottom += w;
236 } else
237 {
238 INT h = lpRect->bottom-lpRect->top;
239
240 rect.top -= h;
241 rect.bottom += h;
242 rect.left -= h;
243 rect.right += h;
244 }
245
246 return PtInRect( &rect, pt );
247}
248
249/***********************************************************************
250 * SCROLL_HitTest
251 *
252 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
253 */
254static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
255 POINT pt, BOOL bDragging )
256{
257 INT arrowSize, thumbSize, thumbPos;
258 RECT rect;
259 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
260
261 if (!infoPtr) return SCROLL_NOWHERE;
262
263 BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
264 &arrowSize, &thumbSize, &thumbPos );
265
266 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
267 (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
268
269 if (vertical)
270 {
271 if (pt.y < rect.top + arrowSize) return (infoPtr->flags & ESB_DISABLE_LTUP) ? SCROLL_NOWHERE:SCROLL_TOP_ARROW;
272 if (pt.y >= rect.bottom - arrowSize) return (infoPtr->flags & ESB_DISABLE_RTDN) ? SCROLL_NOWHERE:SCROLL_BOTTOM_ARROW;
273 if (!thumbPos) return ((infoPtr->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH) ? SCROLL_NOWHERE:SCROLL_TOP_RECT;
274 pt.y -= rect.top;
275 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
276 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
277 }
278 else /* horizontal */
279 {
280 if (pt.x < rect.left + arrowSize) return (infoPtr->flags & ESB_DISABLE_LTUP) ? SCROLL_NOWHERE:SCROLL_TOP_ARROW;
281 if (pt.x >= rect.right - arrowSize) return (infoPtr->flags & ESB_DISABLE_RTDN) ? SCROLL_NOWHERE:SCROLL_BOTTOM_ARROW;
282 if (!thumbPos) return ((infoPtr->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH) ? SCROLL_NOWHERE:SCROLL_TOP_RECT;
283 pt.x -= rect.left;
284 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
285 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
286 }
287 return SCROLL_THUMB;
288}
289
290static void SCROLL_DrawTopArrow(HDC hdc,SCROLLBAR_INFO *infoPtr,RECT *rect,INT arrowSize,BOOL vertical,BOOL top_pressed)
291{
292 RECT r;
293
294 r = *rect;
295 if( vertical )
296 r.bottom = r.top + arrowSize;
297 else
298 r.right = r.left + arrowSize;
299
300 DrawFrameControl( hdc, &r, DFC_SCROLL,
301 (vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT)
302 | (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
303 | (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) );
304}
305
306static void SCROLL_DrawBottomArrow(HDC hdc,SCROLLBAR_INFO *infoPtr,RECT *rect,INT arrowSize,BOOL vertical,BOOL bottom_pressed)
307{
308 RECT r;
309
310 r = *rect;
311 if( vertical )
312 r.top = r.bottom-arrowSize;
313 else
314 r.left = r.right-arrowSize;
315
316 DrawFrameControl( hdc, &r, DFC_SCROLL,
317 (vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT)
318 | (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
319 | (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) );
320}
321
322/***********************************************************************
323 * SCROLL_DrawArrows
324 *
325 * Draw the scroll bar arrows.
326 */
327static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
328 RECT *rect, INT arrowSize, BOOL vertical,
329 BOOL top_pressed, BOOL bottom_pressed )
330{
331 SCROLL_DrawTopArrow(hdc,infoPtr,rect,arrowSize,vertical,top_pressed);
332 SCROLL_DrawBottomArrow(hdc,infoPtr,rect,arrowSize,vertical,bottom_pressed);
333}
334
335static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
336 RECT *rect, INT arrowSize,
337 INT thumbSize, INT thumbPos,
338 UINT flags, BOOL vertical,
339 BOOL top_selected, BOOL bottom_selected )
340{
341 RECT r;
342 HPEN hSavePen;
343 HBRUSH hSaveBrush,hBrush;
344
345 /* Select the correct brush and pen */
346
347 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
348 * The window-owned scrollbars need to call DEFWND_ControlColor
349 * to correctly setup default scrollbar colors
350 */
351 if (nBar == SB_CTL) {
352 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
353 (WPARAM)hdc,(LPARAM)hwnd);
354 } else {
355 hBrush = (HBRUSH)SendMessageA( hwnd, WM_CTLCOLORSCROLLBAR,
356 (WPARAM)hdc,(LPARAM)hwnd);
357
358 }
359
360 hSavePen = SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
361 hSaveBrush = SelectObject( hdc, hBrush );
362
363 /* Calculate the scroll rectangle */
364
365 r = *rect;
366 if (vertical)
367 {
368 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
369 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
370 }
371 else
372 {
373 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
374 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
375 }
376
377 /* Draw the scroll rectangles and thumb */
378 if (!thumbPos) /* No thumb to draw */
379 {
380 PatBlt( hdc, r.left, r.top,
381 r.right - r.left, r.bottom - r.top,
382 PATCOPY );
383
384 /* cleanup and return */
385 SelectObject( hdc, hSavePen );
386 SelectObject( hdc, hSaveBrush );
387 return;
388 }
389
390 if (vertical)
391 {
392 PatBlt( hdc, r.left, r.top,
393 r.right - r.left,
394 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
395 top_selected ? 0x0f0000 : PATCOPY );
396 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
397 PatBlt( hdc, r.left, r.top + thumbSize,
398 r.right - r.left,
399 r.bottom - r.top - thumbSize,
400 bottom_selected ? 0x0f0000 : PATCOPY );
401 r.bottom = r.top + thumbSize;
402 }
403 else /* horizontal */
404 {
405 PatBlt( hdc, r.left, r.top,
406 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
407 r.bottom - r.top,
408 top_selected ? 0x0f0000 : PATCOPY );
409 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
410 PatBlt( hdc, r.left + thumbSize, r.top,
411 r.right - r.left - thumbSize,
412 r.bottom - r.top,
413 bottom_selected ? 0x0f0000 : PATCOPY );
414 r.right = r.left + thumbSize;
415 }
416
417 /* Draw the thumb */
418
419 DrawEdge(hdc,&r,EDGE_RAISED,BF_RECT | BF_ADJUST);
420 FillRect(hdc,&r,(SCROLL_FocusWin == hwnd && SCROLL_Highlighted && !SCROLL_Scrolling) ? GetSysColorBrush(COLOR_3DSHADOW):GetSysColorBrush(COLOR_BTNFACE));
421
422 /* cleanup */
423 SelectObject( hdc, hSavePen );
424 SelectObject( hdc, hSaveBrush );
425}
426
427/***********************************************************************
428 * SCROLL_DrawMovingThumb
429 *
430 * Draw the moving thumb rectangle.
431 */
432static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
433 INT arrowSize, INT thumbSize )
434{
435 INT pos = SCROLL_TrackingPos;
436 INT max_size;
437
438 if( vertical )
439 max_size = rect->bottom - rect->top;
440 else
441 max_size = rect->right - rect->left;
442
443 max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize;
444
445 if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) )
446 pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP);
447 else if( pos > max_size )
448 pos = max_size;
449
450 SCROLL_DrawInterior( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar,
451 rect, arrowSize, thumbSize, pos,
452 0, vertical, FALSE, FALSE );
453}
454
455/***********************************************************************
456 * SCROLL_ClipPos
457 */
458static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
459{
460 if( pt.x < lpRect->left )
461 pt.x = lpRect->left;
462 else
463 if( pt.x >= lpRect->right )
464 pt.x = lpRect->right-1;
465
466 if( pt.y < lpRect->top )
467 pt.y = lpRect->top;
468 else
469 if( pt.y >= lpRect->bottom )
470 pt.y = lpRect->bottom-1;
471
472 return pt;
473}
474
475/***********************************************************************
476 * SCROLL_GetThumbVal
477 *
478 * Compute the current scroll position based on the thumb position in pixels
479 * from the top of the scroll-bar.
480 */
481static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
482 BOOL vertical, INT pos )
483{
484 INT thumbSize;
485 INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
486
487 if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
488 return infoPtr->MinVal;
489
490 if (infoPtr->Page)
491 {
492 thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
493 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
494 }
495 else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
496
497 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
498
499 pos = MAX( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
500 if (pos > pixels) pos = pixels;
501
502 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
503 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
504 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
505}
506
507void SCROLL_GetSizeBox(HWND hwnd,DWORD dwStyle,PRECT rect)
508{
509 RECT clientRect;
510 INT cx = GetSystemMetrics(SM_CXVSCROLL);
511 INT cy = GetSystemMetrics(SM_CYHSCROLL);
512
513 GetClientRect(hwnd,&clientRect);
514
515 if (dwStyle & SBS_SIZEBOXTOPLEFTALIGN)
516 {
517 rect->left = 0;
518 rect->right = cx;
519 rect->bottom = cy;
520 rect->top = 0;
521 } else
522 {
523 rect->left = clientRect.right-cx;
524 rect->right = clientRect.right;
525 rect->bottom = clientRect.bottom;
526 rect->top = clientRect.bottom-cy;
527 }
528}
529
530void SCROLL_DrawSizeBox(HDC hdc,RECT rect)
531{
532 POINT p1,p2;
533 HPEN penDark = GetSysColorPen(COLOR_3DSHADOW);
534 HPEN penWhite = GetSysColorPen(COLOR_3DHILIGHT);
535 HPEN oldPen = SelectObject(hdc,penDark);
536 INT x;
537
538 p1.x = rect.right-1;
539 p1.y = rect.bottom;
540 p2.x = rect.right;
541 p2.y = rect.bottom-1;
542 for (x = 0;x < 3;x++)
543 {
544 SelectObject(hdc,penDark);
545 MoveToEx(hdc,p1.x,p1.y,NULL);
546 LineTo(hdc,p2.x,p2.y);
547 p1.x--;
548 p2.y--;
549 MoveToEx(hdc,p1.x,p1.y,NULL);
550 LineTo(hdc,p2.x,p2.y);
551 SelectObject(hdc,penWhite);
552 p1.x--;
553 p2.y--;
554 MoveToEx(hdc,p1.x,p1.y,NULL);
555 LineTo(hdc,p2.x,p2.y);
556 p1.x -= 2;
557 p2.y -= 2;
558 }
559
560 SelectObject(hdc,oldPen);
561}
562
563/***********************************************************************
564 * SCROLL_DrawScrollBar
565 *
566 * Redraw the whole scrollbar.
567 */
568void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
569 BOOL arrows, BOOL interior )
570{
571 INT arrowSize, thumbSize, thumbPos;
572 RECT rect;
573 BOOL vertical;
574 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr( hwnd, nBar );
575
576 if (!infoPtr) return;
577 if (nBar == SB_CTL)
578 {
579 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
580
581 if (dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP))
582 {
583 RECT rect;
584 HBRUSH hBrush;
585
586 hdc = GetDC(hwnd);
587 hBrush = GetSysColorBrush(COLOR_3DFACE);
588 GetClientRect(hwnd,&rect);
589 FillRect(hdc,&rect,hBrush);
590
591 if (dwStyle & SBS_SIZEGRIP)
592 {
593 SCROLL_GetSizeBox(hwnd,dwStyle,&rect);
594 SCROLL_DrawSizeBox(hdc,rect);
595 }
596
597 ReleaseDC(hwnd,hdc);
598
599 return;
600 }
601 }
602
603 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
604 &arrowSize, &thumbSize, &thumbPos );
605
606 /* Draw the arrows */
607
608 if (arrows && arrowSize)
609 {
610 if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
611 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
612 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
613 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
614 else
615 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
616 FALSE, FALSE );
617 }
618
619 if (SCROLL_MovingThumb &&
620 (SCROLL_TrackingWin == hwnd) &&
621 (SCROLL_TrackingBar == nBar))
622 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
623 else if( interior )
624 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
625 thumbPos, infoPtr->flags, vertical, SCROLL_trackHitTest == SCROLL_TOP_RECT && SCROLL_lastHitTest == SCROLL_TOP_RECT,SCROLL_trackHitTest == SCROLL_BOTTOM_RECT && SCROLL_lastHitTest == SCROLL_BOTTOM_RECT);
626}
627
628/***********************************************************************
629 * SCROLL_RefreshScrollBar
630 *
631 * Repaint the scroll bar interior after a SetScrollRange() or
632 * SetScrollPos() call.
633 */
634static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
635 BOOL arrows, BOOL interior )
636{
637 Win32BaseWindow *window;
638 HDC hdc;
639
640
641 hdc = GetDC(hwnd);
642
643 if (!hdc) return;
644
645 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
646 ReleaseDC( hwnd, hdc );
647}
648
649/* Message Handler */
650
651LRESULT SCROLL_NCCreate(HWND hwnd,WPARAM wParam,LPARAM lParam)
652{
653 SCROLLBAR_INFO *infoPtr = (SCROLLBAR_INFO*)malloc(sizeof(SCROLLBAR_INFO));
654
655 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
656 infoPtr->MaxVal = 100;
657 infoPtr->flags = ESB_ENABLE_BOTH;
658
659 SetInfoPtr(hwnd,(DWORD)infoPtr);
660
661 return TRUE;
662}
663
664LRESULT SCROLL_Create(HWND hwnd,WPARAM wParam,LPARAM lParam)
665{
666 CREATESTRUCTA *lpCreat = (CREATESTRUCTA *)lParam;
667
668 if (!(lpCreat->style & (SBS_SIZEBOX | SBS_SIZEGRIP)) && lpCreat->style & (SBS_LEFTALIGN | SBS_RIGHTALIGN))
669 {
670 if (lpCreat->style & SBS_VERT)
671 {
672 INT w,h;
673
674 w = GetSystemMetrics(SM_CXVSCROLL);
675 h = lpCreat->cy;
676
677 if (lpCreat->style & SBS_LEFTALIGN)
678 MoveWindow(hwnd,lpCreat->x,lpCreat->y,w,h,FALSE);
679 else if (lpCreat->style & SBS_RIGHTALIGN)
680 MoveWindow(hwnd,lpCreat->x+lpCreat->cx-w,lpCreat->y,w,h,FALSE);
681 } else /* SBS_HORZ */
682 {
683 INT w,h;
684
685 w = lpCreat->cx;
686 h = GetSystemMetrics(SM_CYHSCROLL);
687
688 if (lpCreat->style & SBS_TOPALIGN)
689 MoveWindow(hwnd,lpCreat->x,lpCreat->y,w,h,FALSE);
690 else if (lpCreat->style & SBS_BOTTOMALIGN)
691 MoveWindow(hwnd,lpCreat->x,lpCreat->y+lpCreat->cy-h,w,h,FALSE);
692 }
693 }
694
695 return 0;
696}
697
698/***********************************************************************
699 * SCROLL_HandleScrollEvent
700 *
701 * Handle a mouse or timer event for the scrollbar.
702 * 'pt' is the location of the mouse event in client (for SB_CTL) or
703 * windows coordinates.
704 */
705LRESULT SCROLL_HandleScrollEvent(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar,UINT msg)
706{
707 static POINT prevPt; /* Previous mouse position for timer events */
708 static UINT trackThumbPos; /* Thumb position when tracking started. */
709 static BOOL thumbTrackSent;
710 static INT lastClickPos; /* Position in the scroll-bar of the last button-down event. */
711 static INT lastMousePos; /* Position in the scroll-bar of the last mouse event. */
712 static BOOL timerRunning;
713
714 enum SCROLL_HITTEST hittest;
715 HWND hwndOwner, hwndCtl;
716 BOOL vertical;
717 INT arrowSize, thumbSize, thumbPos;
718 RECT rect;
719 HDC hdc;
720 POINT pt;
721 LRESULT res = 0;
722
723 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
724 if (!infoPtr) return res;
725
726 if (nBar == SB_CTL)
727 {
728 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
729
730 if ((dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP)))
731 {
732 if (!(dwStyle & SBS_SIZEGRIP)) return res;
733
734 if (msg == WM_SETCURSOR)
735 {
736 RECT rect;
737
738 SCROLL_GetSizeBox(hwnd,dwStyle,&rect);
739 GetCursorPos(&pt);
740 ScreenToClient(hwnd,&pt);
741
742 if (PtInRect(&rect,pt))
743 {
744 SetCursor(LoadCursorA(0,IDC_SIZENWSEA));
745 return TRUE;
746 }
747
748 return DefWindowProcA(hwnd,WM_SETCURSOR,wParam,lParam);
749 } else if (msg == WM_LBUTTONDOWN)
750 {
751 if (dwStyle & SBS_SIZEGRIP)
752 {
753 RECT rect;
754
755 pt.x = (SHORT)LOWORD(lParam);
756 pt.y = (SHORT)HIWORD(lParam);
757 SCROLL_GetSizeBox(hwnd,dwStyle,&rect);
758 if (PtInRect(&rect,pt))
759 {
760 HWND hwndFrame;
761
762 Win32BaseWindow *win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
763 if (!win32wnd) return res;
764 hwndFrame = OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_OWNER);
765 win32wnd = Win32BaseWindow::GetWindowFromOS2FrameHandle(hwndFrame);
766 if (!win32wnd) return res;
767 FrameTrackFrame(win32wnd,dwStyle & SBS_SIZEBOXTOPLEFTALIGN);
768 }
769 }
770 }
771
772 return res;
773 }
774 }
775
776 if (msg == WM_SETCURSOR) return DefWindowProcA(hwnd,WM_SETCURSOR,wParam,lParam);
777 if (!SCROLL_Scrolling && msg != WM_LBUTTONDOWN) return res;
778
779 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
780 &arrowSize, &thumbSize, &thumbPos );
781 if (nBar == SB_CTL) hwndOwner = GetParent(hwnd); else
782 {
783 Win32BaseWindow *win32wnd;
784 HWND hwndFrame;
785
786 win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
787 if (!win32wnd) return res;
788 hwndFrame = OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_OWNER);
789 win32wnd = Win32BaseWindow::GetWindowFromOS2FrameHandle(hwndFrame);
790 if (!win32wnd) return res;
791 hwndOwner = win32wnd->getWindowHandle();
792 }
793
794 hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
795
796 switch (msg)
797 {
798 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
799 pt.x = (SHORT)LOWORD(lParam);
800 pt.y = (SHORT)HIWORD(lParam);
801 SCROLL_trackVertical = vertical;
802 SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
803 if (SCROLL_trackHitTest == SCROLL_NOWHERE)
804 {
805 MessageBeep(MB_ICONEXCLAMATION);
806
807 return res;
808 }
809 SCROLL_Scrolling = TRUE;
810 timerRunning = FALSE;
811 if (SCROLL_FocusWin == hwnd && SCROLL_Highlighted)
812 {
813 hdc = GetDC(hwnd);
814 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
815 ReleaseDC(hwnd,hdc);
816 }
817 lastClickPos = vertical ? pt.y:pt.x;
818 lastMousePos = lastClickPos;
819 trackThumbPos = thumbPos;
820 prevPt = pt;
821 SetCapture( hwnd );
822 if (nBar == SB_CTL) SetFocus( hwnd );
823 break;
824
825 case WM_MOUSEMOVE:
826 pt.x = (SHORT)LOWORD(lParam);
827 pt.y = (SHORT)HIWORD(lParam);
828 hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
829 prevPt = pt;
830 break;
831
832 case WM_LBUTTONUP:
833 if (SCROLL_Scrolling)
834 {
835 pt.x = (SHORT)LOWORD(lParam);
836 pt.y = (SHORT)HIWORD(lParam);
837 hittest = SCROLL_NOWHERE;
838 ReleaseCapture();
839 SCROLL_Scrolling = FALSE;
840 } else return res;
841 break;
842
843 case WM_CAPTURECHANGED:
844 if (SCROLL_Scrolling)
845 {
846 hittest = SCROLL_NOWHERE;
847 SCROLL_Scrolling = FALSE;
848 } else return res;
849 break;
850
851 case WM_SETFOCUS:
852 if (nBar == SB_CTL)
853 {
854 SCROLL_FocusWin = hwnd;
855 SCROLL_HasFocus = TRUE;
856 SCROLL_Highlighted = FALSE;
857 SetSystemTimer(hwnd,BLINK_TIMER,SCROLL_BLINK_DELAY,(TIMERPROC)0);
858 }
859 return res;
860
861 case WM_KILLFOCUS:
862 if (SCROLL_FocusWin == hwnd)
863 {
864 SCROLL_FocusWin = 0;
865 SCROLL_HasFocus = FALSE;
866 if (SCROLL_Highlighted)
867 {
868 SCROLL_Highlighted = FALSE;
869 hdc = GetDC(hwnd);
870 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
871 ReleaseDC(hwnd,hdc);
872 }
873 KillSystemTimer(hwnd,BLINK_TIMER);
874 }
875 return res;
876
877 case WM_SYSTIMER:
878 if (wParam == SCROLL_TIMER)
879 {
880 pt = prevPt;
881 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
882 break;
883 } else if (wParam == BLINK_TIMER)
884 {
885 SCROLL_Highlighted = ~SCROLL_Highlighted;
886 if (!SCROLL_Scrolling)
887 {
888 hdc = GetDC(hwnd);
889 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
890 ReleaseDC(hwnd,hdc);
891 }
892 return res;
893 } else return res;
894
895 default:
896 return res; /* Should never happen */
897 }
898
899 hdc = GetDC(hwnd);
900
901 switch(SCROLL_trackHitTest)
902 {
903 case SCROLL_NOWHERE: /* No tracking in progress */
904 break;
905
906 case SCROLL_TOP_ARROW:
907 if (msg == WM_LBUTTONUP || msg == WM_CAPTURECHANGED)
908 KillSystemTimer(hwnd,SCROLL_TIMER);
909 else if (msg == WM_LBUTTONDOWN || (!timerRunning && msg == WM_SYSTIMER))
910 {
911 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
912 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
913 (TIMERPROC)0 );
914 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
915 }
916
917 if (msg == WM_LBUTTONDOWN || SCROLL_lastHitTest != hittest)
918 {
919 SCROLL_DrawTopArrow(hdc,infoPtr,&rect,arrowSize,vertical,(hittest == SCROLL_trackHitTest));
920 SCROLL_lastHitTest = hittest;
921 }
922 if (hittest == SCROLL_trackHitTest && (msg == WM_LBUTTONDOWN || msg == WM_SYSTIMER))
923 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_LINEUP,hwndCtl);
924
925 break;
926
927 case SCROLL_TOP_RECT:
928 if (msg == WM_LBUTTONUP || msg == WM_CAPTURECHANGED)
929 KillSystemTimer(hwnd,SCROLL_TIMER);
930 else if (msg == WM_LBUTTONDOWN || (!timerRunning && msg == WM_SYSTIMER))
931 {
932 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
933 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
934 (TIMERPROC)0 );
935 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
936 }
937
938 if (msg == WM_LBUTTONDOWN || SCROLL_lastHitTest != hittest)
939 {
940 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
941 thumbPos, infoPtr->flags, vertical,
942 (hittest == SCROLL_trackHitTest), FALSE );
943 SCROLL_lastHitTest = hittest;
944 }
945
946 if (hittest == SCROLL_trackHitTest && (msg == WM_LBUTTONDOWN || msg == WM_SYSTIMER))
947 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_PAGEUP,hwndCtl);
948
949 break;
950
951 case SCROLL_THUMB:
952 if (msg == WM_LBUTTONDOWN)
953 {
954 SCROLL_TrackingWin = hwnd;
955 SCROLL_TrackingBar = nBar;
956 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
957 SCROLL_TrackingVal = infoPtr->CurVal;
958 SCROLL_MovingThumb = TRUE;
959 thumbTrackSent = FALSE;
960 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
961 } else if (msg == WM_LBUTTONUP || msg == WM_CAPTURECHANGED)
962 {
963 UINT val;
964 INT oldPos = infoPtr->CurVal;
965
966 SCROLL_MovingThumb = FALSE;
967 SCROLL_TrackingWin = 0;
968 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
969 val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
970 trackThumbPos + lastMousePos - lastClickPos );
971
972 if (val != infoPtr->CurVal || thumbTrackSent)
973 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
974 MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
975
976 if (oldPos == infoPtr->CurVal)
977 {
978 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
979 &arrowSize, &thumbSize, &thumbPos );
980 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
981 thumbPos, infoPtr->flags, vertical,
982 FALSE, FALSE );
983 }
984
985 ReleaseDC(hwnd,hdc);
986 return res;
987 } else if (msg == WM_MOUSEMOVE)
988 {
989 UINT pos;
990
991 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
992 else
993 {
994 pt = SCROLL_ClipPos( &rect, pt );
995 pos = vertical ? pt.y:pt.x;
996 }
997 if (pos != lastMousePos)
998 {
999 lastMousePos = pos;
1000 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
1001 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
1002 vertical,
1003 SCROLL_TrackingPos );
1004 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
1005 arrowSize, thumbSize );
1006 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
1007 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
1008 hwndCtl );
1009 thumbTrackSent = TRUE;
1010 }
1011 }
1012 break;
1013
1014 case SCROLL_BOTTOM_RECT:
1015 if (msg == WM_LBUTTONUP || msg == WM_CAPTURECHANGED)
1016 KillSystemTimer(hwnd,SCROLL_TIMER);
1017 else if (msg == WM_LBUTTONDOWN || (!timerRunning && msg == WM_SYSTIMER))
1018 {
1019 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1020 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1021 (TIMERPROC)0 );
1022 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
1023 }
1024
1025 if (msg == WM_LBUTTONDOWN || SCROLL_lastHitTest != hittest)
1026 {
1027 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
1028 thumbPos, infoPtr->flags, vertical,
1029 FALSE, (hittest == SCROLL_trackHitTest) );
1030 SCROLL_lastHitTest = hittest;
1031 }
1032
1033 if (hittest == SCROLL_trackHitTest && (msg == WM_LBUTTONDOWN || msg == WM_SYSTIMER))
1034 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_PAGEDOWN,hwndCtl);
1035
1036 break;
1037
1038 case SCROLL_BOTTOM_ARROW:
1039 if (msg == WM_LBUTTONUP || msg == WM_CAPTURECHANGED)
1040 KillSystemTimer(hwnd,SCROLL_TIMER);
1041 else if (msg == WM_LBUTTONDOWN || (!timerRunning && msg == WM_SYSTIMER))
1042 {
1043 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1044 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1045 (TIMERPROC)0 );
1046 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
1047 }
1048
1049 if (msg == WM_LBUTTONDOWN || SCROLL_lastHitTest != hittest)
1050 {
1051 SCROLL_DrawBottomArrow(hdc,infoPtr,&rect,arrowSize,vertical,(hittest == SCROLL_trackHitTest));
1052 SCROLL_lastHitTest = hittest;
1053 }
1054 if (hittest == SCROLL_trackHitTest && (msg == WM_LBUTTONDOWN || msg == WM_SYSTIMER))
1055 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_LINEDOWN,hwndCtl);
1056
1057 break;
1058 }
1059
1060 if (msg == WM_LBUTTONUP || msg == WM_CAPTURECHANGED)
1061 {
1062 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
1063
1064 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_ENDSCROLL,hwndCtl);
1065 }
1066
1067 ReleaseDC( hwnd, hdc );
1068
1069 return res;
1070}
1071
1072/***********************************************************************
1073 * SCROLL_HandleKbdEvent
1074 *
1075 * Handle a keyboard event (only for SB_CTL scrollbars).
1076 */
1077LRESULT SCROLL_KeyDown(HWND hwnd,WPARAM wParam,LPARAM lParam)
1078{
1079 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
1080 UINT msg;
1081
1082 if (dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP)) return 0;
1083
1084 switch(wParam)
1085 {
1086 case VK_PRIOR: msg = SB_PAGEUP; break;
1087 case VK_NEXT: msg = SB_PAGEDOWN; break;
1088 case VK_HOME: msg = SB_TOP; break;
1089 case VK_END: msg = SB_BOTTOM; break;
1090 case VK_UP: msg = SB_LINEUP; break;
1091 case VK_DOWN: msg = SB_LINEDOWN; break;
1092 default:
1093 return 0;
1094 }
1095 SendMessageA( GetParent(hwnd),
1096 (dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
1097 msg, hwnd );
1098
1099 return 0;
1100}
1101
1102LRESULT SCROLL_Paint(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar)
1103{
1104 PAINTSTRUCT ps;
1105 HDC hdc = wParam ? (HDC)wParam:BeginPaint( hwnd, &ps );
1106
1107 SCROLL_DrawScrollBar( hwnd, hdc, nBar, TRUE, TRUE );
1108 if (!wParam) EndPaint( hwnd, &ps );
1109
1110 return 0;
1111}
1112
1113LRESULT SCROLL_SetRange(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar,BOOL redraw)
1114{
1115 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
1116 INT oldPos = infoPtr->CurVal;
1117
1118 SetScrollRange((nBar == SB_CTL) ? hwnd:SCROLL_GetFrameHandle(hwnd),nBar,wParam,lParam,redraw);
1119 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1120}
1121
1122/* Window Procedures */
1123
1124/***********************************************************************
1125 * ScrollBarWndProc
1126 */
1127LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam,
1128 LPARAM lParam )
1129{
1130 switch(message)
1131 {
1132 case WM_NCCREATE:
1133 return SCROLL_NCCreate(hwnd,wParam,lParam);
1134
1135 case WM_CREATE:
1136 return SCROLL_Create(hwnd,wParam,lParam);
1137
1138 case WM_LBUTTONDOWN:
1139 case WM_LBUTTONUP:
1140 case WM_CAPTURECHANGED:
1141 case WM_MOUSEMOVE:
1142 case WM_SETCURSOR:
1143 case WM_SYSTIMER:
1144 case WM_SETFOCUS:
1145 case WM_KILLFOCUS:
1146 return SCROLL_HandleScrollEvent(hwnd,wParam,lParam,SB_CTL,message);
1147
1148 case WM_KEYDOWN:
1149 return SCROLL_KeyDown(hwnd,wParam,lParam);
1150
1151 case WM_ERASEBKGND:
1152 return 1;
1153
1154 case WM_GETDLGCODE:
1155 return DLGC_WANTARROWS; /* Windows returns this value */
1156
1157 case WM_PAINT:
1158 return SCROLL_Paint(hwnd,wParam,lParam,SB_CTL);
1159
1160 case SBM_SETPOS:
1161 return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
1162
1163 case SBM_GETPOS:
1164 return GetScrollPos( hwnd, SB_CTL );
1165
1166 case SBM_SETRANGE:
1167 return SCROLL_SetRange(hwnd,wParam,lParam,SB_CTL,FALSE);
1168
1169 case SBM_GETRANGE:
1170 GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
1171 return 0;
1172
1173 case SBM_ENABLE_ARROWS:
1174 return EnableScrollBar( hwnd, SB_CTL, wParam );
1175
1176 case SBM_SETRANGEREDRAW:
1177 return SCROLL_SetRange(hwnd,wParam,lParam,SB_CTL,TRUE);
1178
1179 case SBM_SETSCROLLINFO:
1180 return SetScrollInfo(hwnd,SB_CTL,(SCROLLINFO*)lParam,wParam);
1181
1182 case SBM_GETSCROLLINFO:
1183 return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
1184
1185 case 0x00e5:
1186 case 0x00e7:
1187 case 0x00e8:
1188 case 0x00eb:
1189 case 0x00ec:
1190 case 0x00ed:
1191 case 0x00ee:
1192 case 0x00ef:
1193 //ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
1194 // message, wParam, lParam );
1195 break;
1196
1197 default:
1198 return DefWindowProcA( hwnd, message, wParam, lParam );
1199 }
1200
1201 return 0;
1202}
1203
1204/* frame handlers */
1205
1206VOID SCROLL_SubclassScrollBars(HWND hwndHorz,HWND hwndVert)
1207{
1208 if (hwndHorz) SetWindowLongA(hwndHorz,GWL_WNDPROC,(ULONG)HorzScrollBarWndProc);
1209 if (hwndVert) SetWindowLongA(hwndVert,GWL_WNDPROC,(ULONG)VertScrollBarWndProc);
1210}
1211
1212LRESULT WINAPI HorzScrollBarWndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam )
1213{
1214 switch (message)
1215 {
1216 case WM_LBUTTONDOWN:
1217 case WM_LBUTTONUP:
1218 case WM_CAPTURECHANGED:
1219 case WM_MOUSEMOVE:
1220 case WM_SETCURSOR:
1221 case WM_SYSTIMER:
1222 case WM_SETFOCUS:
1223 case WM_KILLFOCUS:
1224 return SCROLL_HandleScrollEvent(hwnd,wParam,lParam,SB_HORZ,message);
1225
1226 case WM_ERASEBKGND:
1227 return 1;
1228
1229 case WM_GETDLGCODE:
1230 return DLGC_WANTARROWS; /* Windows returns this value */
1231
1232 case WM_PAINT:
1233 return SCROLL_Paint(hwnd,wParam,lParam,SB_HORZ);
1234
1235 case SBM_SETPOS:
1236 return SetScrollPos(SCROLL_GetFrameHandle(hwnd),SB_HORZ,wParam,(BOOL)lParam);
1237
1238 case SBM_GETPOS:
1239 return GetScrollPos(SCROLL_GetFrameHandle(hwnd),SB_HORZ);
1240
1241 case SBM_SETRANGE:
1242 return SCROLL_SetRange(hwnd,wParam,lParam,SB_HORZ,FALSE);
1243
1244 case SBM_GETRANGE:
1245 GetScrollRange(SCROLL_GetFrameHandle(hwnd),SB_HORZ,(LPINT)wParam,(LPINT)lParam);
1246 return 0;
1247
1248 case SBM_ENABLE_ARROWS:
1249 return EnableScrollBar(SCROLL_GetFrameHandle(hwnd),SB_HORZ,wParam);
1250
1251 case SBM_SETRANGEREDRAW:
1252 return SCROLL_SetRange(hwnd,wParam,lParam,SB_HORZ,TRUE);
1253
1254 case SBM_SETSCROLLINFO:
1255 return SetScrollInfo(SCROLL_GetFrameHandle(hwnd),SB_HORZ,(SCROLLINFO*)lParam,wParam);
1256
1257 case SBM_GETSCROLLINFO:
1258 return GetScrollInfo(SCROLL_GetFrameHandle(hwnd),SB_HORZ,(SCROLLINFO*)lParam);
1259
1260 default:
1261 return DefWindowProcA(hwnd,message,wParam,lParam);
1262 }
1263
1264 return 0;
1265}
1266
1267LRESULT WINAPI VertScrollBarWndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam )
1268{
1269 switch (message)
1270 {
1271 case WM_LBUTTONDOWN:
1272 case WM_LBUTTONUP:
1273 case WM_CAPTURECHANGED:
1274 case WM_MOUSEMOVE:
1275 case WM_SETCURSOR:
1276 case WM_SYSTIMER:
1277 case WM_SETFOCUS:
1278 case WM_KILLFOCUS:
1279 return SCROLL_HandleScrollEvent(hwnd,wParam,lParam,SB_VERT,message);
1280
1281 case WM_ERASEBKGND:
1282 return 1;
1283
1284 case WM_GETDLGCODE:
1285 return DLGC_WANTARROWS; /* Windows returns this value */
1286
1287 case WM_PAINT:
1288 return SCROLL_Paint(hwnd,wParam,lParam,SB_VERT);
1289
1290 case SBM_SETPOS:
1291 return SetScrollPos(SCROLL_GetFrameHandle(hwnd),SB_VERT,wParam,(BOOL)lParam);
1292
1293 case SBM_GETPOS:
1294 return GetScrollPos(SCROLL_GetFrameHandle(hwnd),SB_VERT);
1295
1296 case SBM_SETRANGE:
1297 return SCROLL_SetRange(hwnd,wParam,lParam,SB_VERT,FALSE);
1298
1299 case SBM_GETRANGE:
1300 GetScrollRange(SCROLL_GetFrameHandle(hwnd),SB_VERT,(LPINT)wParam,(LPINT)lParam);
1301 return 0;
1302
1303 case SBM_ENABLE_ARROWS:
1304 return EnableScrollBar(SCROLL_GetFrameHandle(hwnd),SB_VERT,wParam);
1305
1306 case SBM_SETRANGEREDRAW:
1307 return SCROLL_SetRange(hwnd,wParam,lParam,SB_VERT,TRUE);
1308
1309 case SBM_SETSCROLLINFO:
1310 return SetScrollInfo(SCROLL_GetFrameHandle(hwnd),SB_VERT,(SCROLLINFO*)lParam,wParam);
1311
1312 case SBM_GETSCROLLINFO:
1313 return GetScrollInfo(SCROLL_GetFrameHandle(hwnd),SB_VERT,(SCROLLINFO*)lParam);
1314
1315 default:
1316 return DefWindowProcA(hwnd,message,wParam,lParam);
1317 }
1318
1319 return 0;
1320}
1321
1322/* Scrollbar API */
1323
1324/*************************************************************************
1325 * SetScrollInfo (USER32.501)
1326 * SetScrollInfo32 can be used to set the position, upper bound,
1327 * lower bound, and page size of a scrollbar control.
1328 *
1329 * RETURNS
1330 * Scrollbar position
1331 *
1332 * NOTE
1333 * For 100 lines of text to be displayed in a window of 25 lines,
1334 * one would for instance use info->nMin=0, info->nMax=75
1335 * (corresponding to the 76 different positions of the window on
1336 * the text), and info->nPage=25.
1337 */
1338INT WINAPI SetScrollInfo(HWND hwnd,INT nBar,const SCROLLINFO *info,BOOL bRedraw)
1339{
1340 /* Update the scrollbar state and set action flags according to
1341 * what has to be done graphics wise. */
1342
1343 SCROLLBAR_INFO *infoPtr;
1344 UINT new_flags;
1345 INT action = 0;
1346 HWND hwndScroll = SCROLL_GetScrollHandle(hwnd,nBar);
1347
1348 dprintf(("USER32: SetScrollInfo"));
1349
1350 if (!hwndScroll) return 0;
1351 if (!(infoPtr = SCROLL_GetInfoPtr(hwndScroll,nBar))) return 0;
1352 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1353 if ((info->cbSize != sizeof(*info)) &&
1354 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1355
1356 /* Set the page size */
1357 if (info->fMask & SIF_PAGE)
1358 {
1359 if( infoPtr->Page != info->nPage )
1360 {
1361 infoPtr->Page = info->nPage;
1362 action |= SA_SSI_REPAINT_INTERIOR;
1363 }
1364 }
1365
1366 /* Set the scroll pos */
1367 if (info->fMask & SIF_POS)
1368 {
1369 //dsprintf(scroll, " pos=%d", info->nPos );
1370 if( infoPtr->CurVal != info->nPos )
1371 {
1372 infoPtr->CurVal = info->nPos;
1373 action |= SA_SSI_MOVE_THUMB;
1374 }
1375 }
1376
1377 /* Set the scroll range */
1378 if (info->fMask & SIF_RANGE)
1379 {
1380 /* Invalid range -> range is set to (0,0) */
1381 if ((info->nMin > info->nMax) ||
1382 ((UINT)(info->nMax - info->nMin) >= 0x80000000))
1383 {
1384 infoPtr->MinVal = 0;
1385 infoPtr->MaxVal = 0;
1386 }
1387 else
1388 {
1389 if( infoPtr->MinVal != info->nMin ||
1390 infoPtr->MaxVal != info->nMax )
1391 {
1392 action |= SA_SSI_REPAINT_INTERIOR;
1393 infoPtr->MinVal = info->nMin;
1394 infoPtr->MaxVal = info->nMax;
1395 }
1396 }
1397 }
1398
1399 /* Make sure the page size is valid */
1400
1401 if (infoPtr->Page < 0) infoPtr->Page = 0;
1402 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1403 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1404
1405 /* Make sure the pos is inside the range */
1406
1407 if (infoPtr->CurVal < infoPtr->MinVal)
1408 infoPtr->CurVal = infoPtr->MinVal;
1409 else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1410 infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
1411
1412 //TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1413 // infoPtr->Page, infoPtr->CurVal,
1414 // infoPtr->MinVal, infoPtr->MaxVal );
1415
1416 /* Check if the scrollbar should be hidden or disabled */
1417 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1418 {
1419 new_flags = infoPtr->flags;
1420 if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1421 {
1422 /* Hide or disable scroll-bar */
1423 if (info->fMask & SIF_DISABLENOSCROLL)
1424 {
1425 new_flags = ESB_DISABLE_BOTH;
1426 action |= SA_SSI_REFRESH;
1427 } else if (nBar != SB_CTL)
1428 {
1429 action = SA_SSI_HIDE;
1430 infoPtr->flags = 0;
1431 goto done;
1432 }
1433 } else /* Show and enable scroll-bar */
1434 {
1435 new_flags = 0;
1436 if (nBar != SB_CTL) action |= SA_SSI_SHOW;
1437 if (infoPtr->flags) action |= SA_SSI_REFRESH;
1438 }
1439
1440 if (infoPtr->flags != new_flags) /* check arrow flags */
1441 {
1442 infoPtr->flags = new_flags;
1443 action |= SA_SSI_REPAINT_ARROWS;
1444 }
1445 }
1446
1447done:
1448 /* Update scrollbar */
1449
1450 if( action & SA_SSI_HIDE )
1451 ShowScrollBar(hwnd,nBar,FALSE);
1452 else
1453 {
1454 if(action & SA_SSI_SHOW)
1455 ShowScrollBar(hwnd,nBar,TRUE);
1456
1457 if (bRedraw)
1458 {
1459 if (action & SA_SSI_REFRESH)
1460 SCROLL_RefreshScrollBar(hwndScroll,nBar,TRUE,TRUE);
1461 else
1462 {
1463 if (action & (SA_SSI_REPAINT_INTERIOR | SA_SSI_MOVE_THUMB))
1464 SCROLL_RefreshScrollBar(hwndScroll,nBar,FALSE,TRUE);
1465 if (action & SA_SSI_REPAINT_ARROWS)
1466 SCROLL_RefreshScrollBar(hwndScroll,nBar,TRUE,FALSE);
1467 }
1468 }
1469 }
1470
1471 /* Return current position */
1472
1473 return infoPtr->CurVal;
1474}
1475/*************************************************************************
1476 * GetScrollInfo (USER32.284)
1477 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1478 * lower bound, and page size of a scrollbar control.
1479 *
1480 * RETURNS STD
1481 */
1482BOOL WINAPI GetScrollInfo(
1483 HWND hwnd /* [I] Handle of window */ ,
1484 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1485 LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1486{
1487 SCROLLBAR_INFO *infoPtr;
1488 HWND hwndScroll;
1489
1490 dprintf(("USER32: GetScrollInfo"));
1491
1492 hwndScroll = SCROLL_GetScrollHandle(hwnd,nBar);
1493 if (!hwndScroll || !(infoPtr = SCROLL_GetInfoPtr(hwndScroll,nBar))) return FALSE;
1494 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1495 if ((info->cbSize != sizeof(*info)) &&
1496 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1497
1498 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1499 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1500 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1501 info->nTrackPos = (SCROLL_MovingThumb && SCROLL_TrackingWin == hwndScroll && SCROLL_TrackingBar == nBar) ? SCROLL_TrackingVal:infoPtr->CurVal;
1502
1503 if (info->fMask & SIF_RANGE)
1504 {
1505 info->nMin = infoPtr->MinVal;
1506 info->nMax = infoPtr->MaxVal;
1507 }
1508 return (info->fMask & SIF_ALL) != 0;
1509}
1510/*************************************************************************
1511 * SetScrollPos (USER32.502)
1512 *
1513 * RETURNS
1514 * Success: Scrollbar position
1515 * Failure: 0
1516 *
1517 * REMARKS
1518 * Note the ambiguity when 0 is returned. Use GetLastError
1519 * to make sure there was an error (and to know which one).
1520 */
1521INT WINAPI SetScrollPos(
1522 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1523 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1524 INT nPos /* [I] New value */,
1525 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
1526{
1527 SCROLLINFO info;
1528 SCROLLBAR_INFO *infoPtr;
1529 INT oldPos;
1530
1531 dprintf(("SetScrollPos %x %d %d %d", hwnd, nBar, nPos, bRedraw));
1532 if (!(infoPtr = SCROLL_GetInfoPtr(SCROLL_GetScrollHandle(hwnd,nBar),nBar))) return 0;
1533 oldPos = infoPtr->CurVal;
1534 info.cbSize = sizeof(info);
1535 info.nPos = nPos;
1536 info.fMask = SIF_POS;
1537 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1538 return oldPos;
1539}
1540/*************************************************************************
1541 * GetScrollPos (USER32.285)
1542 *
1543 * RETURNS
1544 * Success: Current position
1545 * Failure: 0
1546 *
1547 * REMARKS
1548 * Note the ambiguity when 0 is returned. Use GetLastError
1549 * to make sure there was an error (and to know which one).
1550 */
1551INT WINAPI GetScrollPos(
1552 HWND hwnd, /* [I] Handle of window */
1553 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1554{
1555 SCROLLBAR_INFO *infoPtr;
1556
1557 dprintf(("GetScrollPos %x %d", hwnd, nBar));
1558
1559 infoPtr = SCROLL_GetInfoPtr(SCROLL_GetScrollHandle(hwnd,nBar),nBar);
1560 if (!infoPtr) return 0;
1561
1562 return infoPtr->CurVal;
1563}
1564
1565/*************************************************************************
1566 * SetScrollRange (USER32.503)
1567 *
1568 * RETURNS STD
1569 */
1570BOOL WINAPI SetScrollRange(
1571 HWND hwnd, /* [I] Handle of window whose scrollbar will be affected */
1572 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1573 INT MinVal, /* [I] New minimum value */
1574 INT MaxVal, /* [I] New maximum value */
1575 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1576{
1577 SCROLLINFO info;
1578
1579 dprintf(("SetScrollRange %x %x %d %d %d", hwnd, nBar, MinVal, MaxVal, bRedraw));
1580 info.cbSize = sizeof(info);
1581 info.nMin = MinVal;
1582 info.nMax = MaxVal;
1583 info.fMask = SIF_RANGE;
1584 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1585 return TRUE;
1586}
1587
1588/*************************************************************************
1589 * GetScrollRange (USER32.286)
1590 *
1591 * RETURNS STD
1592 */
1593BOOL WINAPI GetScrollRange(
1594 HWND hwnd, /* [I] Handle of window */
1595 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1596 LPINT lpMin, /* [O] Where to store minimum value */
1597 LPINT lpMax /* [O] Where to store maximum value */)
1598{
1599 SCROLLBAR_INFO *infoPtr;
1600
1601 infoPtr = SCROLL_GetInfoPtr(SCROLL_GetScrollHandle(hwnd,nBar),nBar);
1602 if (!infoPtr)
1603 {
1604 if (lpMin) lpMin = 0;
1605 if (lpMax) lpMax = 0;
1606 return FALSE;
1607 }
1608 if (lpMin) *lpMin = infoPtr->MinVal;
1609 if (lpMax) *lpMax = infoPtr->MaxVal;
1610 return TRUE;
1611}
1612
1613/*************************************************************************
1614 * ShowScrollBar (USER32.532)
1615 *
1616 * RETURNS STD
1617 */
1618BOOL WINAPI ShowScrollBar(
1619 HWND hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
1620 INT nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1621 BOOL fShow /* [I] TRUE = show, FALSE = hide */)
1622{
1623 dprintf(("ShowScrollBar %04x %d %d\n", hwnd, nBar, fShow));
1624
1625 if (nBar == SB_CTL)
1626 {
1627 ShowWindow(hwnd,fShow ? SW_SHOW:SW_HIDE);
1628
1629 return TRUE;
1630 } else
1631 {
1632 Win32BaseWindow *window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1633 BOOL createHorz = FALSE,createVert = FALSE;
1634
1635 if (!window)
1636 {
1637 dprintf(("ShowScrollBar window not found!"));
1638 SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1639 return FALSE;
1640 }
1641
1642 return window->showScrollBars(nBar == SB_HORZ || nBar == SB_BOTH,nBar == SB_VERT || nBar == SB_BOTH,fShow);
1643 }
1644
1645 return TRUE;
1646}
1647
1648/*************************************************************************
1649 * EnableScrollBar (USER32.171)
1650 */
1651BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags)
1652{
1653 Win32BaseWindow *window;
1654 SCROLLBAR_INFO *infoPtr;
1655
1656 dprintf(("EnableScrollBar %04x %d %d\n", hwnd, nBar, flags));
1657
1658 if (nBar == SB_CTL)
1659 {
1660 if (!(infoPtr = SCROLL_GetInfoPtr(hwnd,nBar))) return FALSE;
1661
1662 if (infoPtr->flags != flags)
1663 {
1664 infoPtr->flags = flags;
1665 SCROLL_RefreshScrollBar(hwnd,nBar,TRUE,TRUE);
1666 }
1667
1668 return TRUE;
1669 } else
1670 {
1671 Win32BaseWindow *window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1672
1673 if(!window)
1674 {
1675 dprintf(("EnableScrollBar window not found!"));
1676 SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1677 return FALSE;
1678 }
1679
1680 if(window->getStyle() & (WS_HSCROLL | WS_VSCROLL))
1681 {
1682 BOOL rc = FALSE;
1683
1684 if ((nBar == SB_VERT || nBar == SB_BOTH) && window->getStyle() & WS_VSCROLL)
1685 {
1686 HWND hwndScroll = Win32BaseWindow::OS2ToWin32Handle(window->getVertScrollHandle());
1687
1688 infoPtr = SCROLL_GetInfoPtr(hwndScroll,SB_VERT);
1689 if (infoPtr)
1690 {
1691 if (infoPtr->flags != flags)
1692 {
1693 infoPtr->flags = flags;
1694 SCROLL_RefreshScrollBar(hwndScroll,nBar,TRUE,TRUE);
1695 }
1696
1697 rc = TRUE;
1698 }
1699 }
1700 if ((nBar == SB_HORZ || (rc && nBar == SB_BOTH)) && window->getStyle() & WS_HSCROLL)
1701 {
1702 HWND hwndScroll = Win32BaseWindow::OS2ToWin32Handle(window->getHorzScrollHandle());
1703
1704 infoPtr = SCROLL_GetInfoPtr(hwndScroll,SB_VERT);
1705 if (infoPtr)
1706 {
1707 if (infoPtr->flags != flags)
1708 {
1709 infoPtr->flags = flags;
1710 SCROLL_RefreshScrollBar(hwndScroll,nBar,TRUE,TRUE);
1711 }
1712
1713 rc = TRUE;
1714 }
1715 }
1716
1717 return rc;
1718 }
1719 }
1720
1721 return TRUE;
1722}
1723
1724//CB: not listed in user32.exp -> don't know the id!
1725
1726BOOL WINAPI GetScrollBarInfo(HWND hwnd,LONG idObject,PSCROLLBARINFO psbi)
1727{
1728 if (!psbi || psbi->cbSize != sizeof(SCROLLBARINFO))
1729 {
1730 SetLastError(ERROR_INVALID_PARAMETER);
1731
1732 return FALSE;
1733 }
1734
1735 HWND hwndScroll;
1736 INT nBar,arrowSize;
1737
1738 switch (idObject)
1739 {
1740 case OBJID_CLIENT:
1741 nBar = SB_CTL;
1742 hwndScroll = hwnd;
1743 break;
1744
1745 case OBJID_HSCROLL:
1746 nBar = SB_HORZ;
1747 hwndScroll = SCROLL_GetScrollHandle(hwnd,SB_HORZ);
1748 break;
1749
1750 case OBJID_VSCROLL:
1751 nBar = SB_VERT;
1752 hwndScroll = SCROLL_GetScrollHandle(hwnd,SB_VERT);
1753 break;
1754
1755 default:
1756 return FALSE;
1757 }
1758
1759 if (!hwndScroll) return FALSE;
1760
1761 SCROLL_GetScrollBarRect(hwndScroll,nBar,&psbi->rcScrollBar,&arrowSize,&psbi->dxyLineButton,&psbi->xyThumbTop);
1762 psbi->xyThumbBottom = psbi->xyThumbTop+psbi->dxyLineButton;
1763 psbi->bogus = 0; //CB: undocumented!
1764 psbi->rgstate[0] = IsWindowVisible(hwndScroll) ? STATE_SYSTEM_INVISIBLE:0;
1765 psbi->rgstate[1] = psbi->rgstate[2] = psbi->rgstate[3] = psbi->rgstate[4] = psbi->rgstate[5] = psbi->rgstate[0]; //CB: todo
1766
1767 return TRUE;
1768}
1769//******************************************************************************
1770//******************************************************************************
1771BOOL SCROLLBAR_Register()
1772{
1773 WNDCLASSA wndClass;
1774
1775//SvL: Don't check this now
1776// if (GlobalFindAtomA(SCROLLBARCLASSNAME)) return FALSE;
1777
1778 ZeroMemory(&wndClass,sizeof(WNDCLASSA));
1779 wndClass.style = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW | CS_PARENTDC;
1780 wndClass.lpfnWndProc = (WNDPROC)ScrollBarWndProc;
1781 wndClass.cbClsExtra = 0;
1782 wndClass.cbWndExtra = sizeof(SCROLLBAR_INFO);
1783 wndClass.hCursor = LoadCursorA(0,IDC_ARROWA);
1784 wndClass.hbrBackground = (HBRUSH)0;
1785 wndClass.lpszClassName = SCROLLBARCLASSNAME;
1786
1787 return RegisterClassA(&wndClass);
1788}
1789//******************************************************************************
1790//******************************************************************************
1791BOOL SCROLLBAR_Unregister()
1792{
1793 if (GlobalFindAtomA(SCROLLBARCLASSNAME))
1794 return UnregisterClassA(SCROLLBARCLASSNAME,(HINSTANCE)NULL);
1795 else return FALSE;
1796}
1797//******************************************************************************
1798//******************************************************************************
1799
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