source: trunk/src/user32/scroll.cpp@ 2804

Last change on this file since 2804 was 2804, checked in by sandervl, 26 years ago

Added new logging feature
File size: 50.3 KB
Line 
1/* $Id: scroll.cpp,v 1.34 2000-02-16 14:34:32 sandervl 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: 20000130
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 DBG_LOCALLOG DBG_scroll
26#include "dbglocal.h"
27
28#define SCROLL_MIN_RECT 4 /* Minimum size of the rectangle between the arrows */
29#define SCROLL_MIN_THUMB 6 /* Minimum size of the thumb in pixels */
30
31#define SCROLL_ARROW_THUMB_OVERLAP 0 /* Overlap between arrows and thumb */
32
33#define SCROLL_FIRST_DELAY 200 /* Delay (in ms) before first repetition when holding the button down */
34#define SCROLL_REPEAT_DELAY 50 /* Delay (in ms) between scroll repetitions */
35#define SCROLL_BLINK_DELAY 1000
36
37#define SCROLL_TIMER 0 /* Scroll timer id */
38#define BLINK_TIMER 1
39
40 /* Scroll-bar hit testing */
41enum SCROLL_HITTEST
42{
43 SCROLL_NOWHERE, /* Outside the scroll bar */
44 SCROLL_TOP_ARROW, /* Top or left arrow */
45 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
46 SCROLL_THUMB, /* Thumb rectangle */
47 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
48 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
49};
50
51 /* What to do in SetScrollInfo() */
52#define SA_SSI_HIDE 0x0001
53#define SA_SSI_SHOW 0x0002
54#define SA_SSI_REPAINT_INTERIOR 0x0004
55#define SA_SSI_REPAINT_ARROWS 0x0008
56#define SA_SSI_MOVE_THUMB 0x0010
57#define SA_SSI_REFRESH 0x0020
58
59 /* Thumb-tracking info */
60static HWND SCROLL_TrackingWin = 0;
61static INT SCROLL_TrackingBar = 0;
62static INT SCROLL_TrackingPos = 0;
63static INT SCROLL_TrackingVal = 0;
64 /* Focus info */
65static HWND SCROLL_FocusWin = 0;
66static BOOL SCROLL_HasFocus = FALSE;
67static BOOL SCROLL_Highlighted = FALSE;
68static BOOL SCROLL_Scrolling = FALSE;
69
70 /* Hit test code of the last button-down event */
71static enum SCROLL_HITTEST SCROLL_trackHitTest;
72static enum SCROLL_HITTEST SCROLL_lastHitTest;
73static BOOL SCROLL_trackVertical;
74
75 /* Is the moving thumb being displayed? */
76static BOOL SCROLL_MovingThumb = FALSE;
77
78static SCROLLBAR_INFO *SCROLL_GetInfoPtr( HWND hwnd, INT nBar )
79{
80 Win32BaseWindow *win32wnd;
81
82 switch(nBar)
83 {
84 case SB_HORZ:
85 case SB_VERT:
86 win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
87 if (!win32wnd) return NULL;
88 return win32wnd->getScrollInfo(nBar);
89
90 case SB_CTL:
91 return (SCROLLBAR_INFO*)GetInfoPtr(hwnd);
92 }
93
94 return NULL;
95}
96
97/* Scrollbar Functions */
98
99/***********************************************************************
100 * SCROLL_GetScrollBarRect
101 *
102 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
103 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
104 * 'arrowSize' returns the width or height of an arrow (depending on
105 * the orientation of the scrollbar), 'thumbSize' returns the size of
106 * the thumb, and 'thumbPos' returns the position of the thumb
107 * relative to the left or to the top.
108 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
109 */
110static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
111 INT *arrowSize, INT *thumbSize,
112 INT *thumbPos )
113{
114 INT pixels;
115 BOOL vertical;
116 RECT rectClient;
117
118 switch(nBar)
119 {
120 case SB_HORZ:
121 {
122 Win32BaseWindow *win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
123 RECT rectClient;
124
125 if (!win32wnd) return FALSE;
126 rectClient = *win32wnd->getClientRectPtr();
127 lprect->left = rectClient.left;
128 lprect->top = rectClient.bottom;
129 lprect->right = rectClient.right;
130 lprect->bottom = lprect->top+GetSystemMetrics(SM_CYHSCROLL);
131 if (win32wnd->getStyle() & WS_BORDER)
132 {
133 lprect->left--;
134 lprect->right++;
135 } else if (win32wnd->getStyle() & WS_VSCROLL)
136 lprect->right++;
137 vertical = FALSE;
138 break;
139 }
140
141 case SB_VERT:
142 {
143 Win32BaseWindow *win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
144 RECT rectClient;
145
146 if (!win32wnd) return FALSE;
147 rectClient = *win32wnd->getClientRectPtr();
148 lprect->left = rectClient.right;
149 lprect->top = rectClient.top;
150 lprect->right = lprect->left+GetSystemMetrics(SM_CXVSCROLL);
151 lprect->bottom = rectClient.bottom;
152 if(win32wnd->getStyle() & WS_BORDER)
153 {
154 lprect->top--;
155 lprect->bottom++;
156 } else if (win32wnd->getStyle() & WS_HSCROLL)
157 lprect->bottom++;
158 vertical = TRUE;
159 break;
160 }
161
162 case SB_CTL:
163 {
164 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
165
166 GetClientRect( hwnd, lprect );
167 vertical = ((dwStyle & SBS_VERT) != 0);
168 break;
169 }
170
171 default:
172 return FALSE;
173 }
174
175 if (vertical) pixels = lprect->bottom - lprect->top;
176 else pixels = lprect->right - lprect->left;
177
178 if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
179 {
180 if (pixels > SCROLL_MIN_RECT)
181 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
182 else
183 *arrowSize = 0;
184 *thumbPos = *thumbSize = 0;
185 }
186 else
187 {
188 SCROLLBAR_INFO *info = SCROLL_GetInfoPtr( hwnd, nBar );
189
190 *arrowSize = GetSystemMetrics(SM_CXVSCROLL);
191 pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
192
193 if (info->Page)
194 {
195 *thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
196 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
197 }
198 else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
199
200 if (((pixels -= *thumbSize ) < 0) ||
201 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
202 {
203 /* Rectangle too small or scrollbar disabled -> no thumb */
204 *thumbPos = *thumbSize = 0;
205 }
206 else
207 {
208 INT max = info->MaxVal - MAX( info->Page-1, 0 );
209 if (info->MinVal >= max)
210 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
211 else
212 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
213 + pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
214 }
215 }
216 return vertical;
217}
218
219/***********************************************************************
220 * SCROLL_PtInRectEx
221 */
222static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
223{
224 RECT rect = *lpRect;
225
226 if (vertical)
227 {
228 INT w = lpRect->right-lpRect->left;
229
230 rect.left -= w;
231 rect.right += w;
232 rect.top -= w;
233 rect.bottom += w;
234 } else
235 {
236 INT h = lpRect->bottom-lpRect->top;
237
238 rect.top -= h;
239 rect.bottom += h;
240 rect.left -= h;
241 rect.right += h;
242 }
243
244 return PtInRect( &rect, pt );
245}
246
247/***********************************************************************
248 * SCROLL_HitTest
249 *
250 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
251 */
252static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
253 POINT pt, BOOL bDragging )
254{
255 INT arrowSize, thumbSize, thumbPos;
256 RECT rect;
257 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
258
259 if (!infoPtr) return SCROLL_NOWHERE;
260
261 BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
262 &arrowSize, &thumbSize, &thumbPos );
263
264 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
265 (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
266
267 if (vertical)
268 {
269 if (pt.y < rect.top + arrowSize) return (infoPtr->flags & ESB_DISABLE_LTUP) ? SCROLL_NOWHERE:SCROLL_TOP_ARROW;
270 if (pt.y >= rect.bottom - arrowSize) return (infoPtr->flags & ESB_DISABLE_RTDN) ? SCROLL_NOWHERE:SCROLL_BOTTOM_ARROW;
271 if (!thumbPos) return ((infoPtr->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH) ? SCROLL_NOWHERE:SCROLL_TOP_RECT;
272 pt.y -= rect.top;
273 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
274 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
275 }
276 else /* horizontal */
277 {
278 if (pt.x < rect.left + arrowSize) return (infoPtr->flags & ESB_DISABLE_LTUP) ? SCROLL_NOWHERE:SCROLL_TOP_ARROW;
279 if (pt.x >= rect.right - arrowSize) return (infoPtr->flags & ESB_DISABLE_RTDN) ? SCROLL_NOWHERE:SCROLL_BOTTOM_ARROW;
280 if (!thumbPos) return ((infoPtr->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH) ? SCROLL_NOWHERE:SCROLL_TOP_RECT;
281 pt.x -= rect.left;
282 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
283 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
284 }
285 return SCROLL_THUMB;
286}
287
288static void SCROLL_DrawTopArrow(HDC hdc,SCROLLBAR_INFO *infoPtr,RECT *rect,INT arrowSize,BOOL vertical,BOOL top_pressed)
289{
290 RECT r;
291
292 r = *rect;
293 if( vertical )
294 r.bottom = r.top + arrowSize;
295 else
296 r.right = r.left + arrowSize;
297
298 DrawFrameControl( hdc, &r, DFC_SCROLL,
299 (vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT)
300 | (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
301 | (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) );
302}
303
304static void SCROLL_DrawBottomArrow(HDC hdc,SCROLLBAR_INFO *infoPtr,RECT *rect,INT arrowSize,BOOL vertical,BOOL bottom_pressed)
305{
306 RECT r;
307
308 r = *rect;
309 if( vertical )
310 r.top = r.bottom-arrowSize;
311 else
312 r.left = r.right-arrowSize;
313
314 DrawFrameControl( hdc, &r, DFC_SCROLL,
315 (vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT)
316 | (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
317 | (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) );
318}
319
320/***********************************************************************
321 * SCROLL_DrawArrows
322 *
323 * Draw the scroll bar arrows.
324 */
325static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
326 RECT *rect, INT arrowSize, BOOL vertical,
327 BOOL top_pressed, BOOL bottom_pressed )
328{
329 SCROLL_DrawTopArrow(hdc,infoPtr,rect,arrowSize,vertical,top_pressed);
330 SCROLL_DrawBottomArrow(hdc,infoPtr,rect,arrowSize,vertical,bottom_pressed);
331}
332
333static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
334 RECT *rect, INT arrowSize,
335 INT thumbSize, INT thumbPos,
336 UINT flags, BOOL vertical,
337 BOOL top_selected, BOOL bottom_selected )
338{
339 RECT r;
340 HPEN hSavePen;
341 HBRUSH hSaveBrush,hBrush;
342
343 /* Select the correct brush and pen */
344
345 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
346 * The window-owned scrollbars need to call DEFWND_ControlColor
347 * to correctly setup default scrollbar colors
348 */
349 if (nBar == SB_CTL) {
350 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
351 (WPARAM)hdc,(LPARAM)hwnd);
352 } else {
353 hBrush = (HBRUSH)SendMessageA( hwnd, WM_CTLCOLORSCROLLBAR,
354 (WPARAM)hdc,(LPARAM)hwnd);
355
356 }
357
358 hSavePen = SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
359 hSaveBrush = SelectObject( hdc, hBrush );
360
361 /* Calculate the scroll rectangle */
362
363 r = *rect;
364 if (vertical)
365 {
366 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
367 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
368 }
369 else
370 {
371 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
372 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
373 }
374
375 /* Draw the scroll rectangles and thumb */
376 if (!thumbPos) /* No thumb to draw */
377 {
378 PatBlt( hdc, r.left, r.top,
379 r.right - r.left, r.bottom - r.top,
380 PATCOPY );
381
382 /* cleanup and return */
383 SelectObject( hdc, hSavePen );
384 SelectObject( hdc, hSaveBrush );
385 return;
386 }
387
388 if (vertical)
389 {
390 PatBlt( hdc, r.left, r.top,
391 r.right - r.left,
392 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
393 top_selected ? 0x0f0000 : PATCOPY );
394 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
395 PatBlt( hdc, r.left, r.top + thumbSize,
396 r.right - r.left,
397 r.bottom - r.top - thumbSize,
398 bottom_selected ? 0x0f0000 : PATCOPY );
399 r.bottom = r.top + thumbSize;
400 }
401 else /* horizontal */
402 {
403 PatBlt( hdc, r.left, r.top,
404 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
405 r.bottom - r.top,
406 top_selected ? 0x0f0000 : PATCOPY );
407 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
408 PatBlt( hdc, r.left + thumbSize, r.top,
409 r.right - r.left - thumbSize,
410 r.bottom - r.top,
411 bottom_selected ? 0x0f0000 : PATCOPY );
412 r.right = r.left + thumbSize;
413 }
414
415 /* Draw the thumb */
416
417 DrawEdge(hdc,&r,EDGE_RAISED,BF_RECT | BF_ADJUST);
418 FillRect(hdc,&r,(SCROLL_FocusWin == hwnd && SCROLL_Highlighted && !SCROLL_Scrolling) ? GetSysColorBrush(COLOR_3DSHADOW):GetSysColorBrush(COLOR_BTNFACE));
419
420 /* cleanup */
421 SelectObject( hdc, hSavePen );
422 SelectObject( hdc, hSaveBrush );
423}
424
425/***********************************************************************
426 * SCROLL_DrawMovingThumb
427 *
428 * Draw the moving thumb rectangle.
429 */
430static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
431 INT arrowSize, INT thumbSize )
432{
433 INT pos = SCROLL_TrackingPos;
434 INT max_size;
435
436 if( vertical )
437 max_size = rect->bottom - rect->top;
438 else
439 max_size = rect->right - rect->left;
440
441 max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize;
442
443 if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) )
444 pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP);
445 else if( pos > max_size )
446 pos = max_size;
447
448 SCROLL_DrawInterior( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar,
449 rect, arrowSize, thumbSize, pos,
450 0, vertical, FALSE, FALSE );
451}
452
453/***********************************************************************
454 * SCROLL_ClipPos
455 */
456static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
457{
458 if( pt.x < lpRect->left )
459 pt.x = lpRect->left;
460 else
461 if( pt.x >= lpRect->right )
462 pt.x = lpRect->right-1;
463
464 if( pt.y < lpRect->top )
465 pt.y = lpRect->top;
466 else
467 if( pt.y >= lpRect->bottom )
468 pt.y = lpRect->bottom-1;
469
470 return pt;
471}
472
473/***********************************************************************
474 * SCROLL_GetThumbVal
475 *
476 * Compute the current scroll position based on the thumb position in pixels
477 * from the top of the scroll-bar.
478 */
479static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
480 BOOL vertical, INT pos )
481{
482 INT thumbSize;
483 INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
484
485 if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
486 return infoPtr->MinVal;
487
488 if (infoPtr->Page)
489 {
490 thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
491 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
492 }
493 else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
494
495 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
496
497 pos = MAX( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
498 if (pos > pixels) pos = pixels;
499
500 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
501 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
502 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
503}
504
505void SCROLL_GetSizeBox(HWND hwnd,DWORD dwStyle,PRECT rect)
506{
507 RECT clientRect;
508 INT cx = GetSystemMetrics(SM_CXVSCROLL);
509 INT cy = GetSystemMetrics(SM_CYHSCROLL);
510
511 GetClientRect(hwnd,&clientRect);
512
513 if (dwStyle & SBS_SIZEBOXTOPLEFTALIGN)
514 {
515 rect->left = 0;
516 rect->right = cx;
517 rect->bottom = cy;
518 rect->top = 0;
519 } else
520 {
521 rect->left = clientRect.right-cx;
522 rect->right = clientRect.right;
523 rect->bottom = clientRect.bottom;
524 rect->top = clientRect.bottom-cy;
525 }
526}
527
528void SCROLL_DrawSizeBox(HDC hdc,RECT rect)
529{
530 POINT p1,p2;
531 HPEN penDark = GetSysColorPen(COLOR_3DSHADOW);
532 HPEN penWhite = GetSysColorPen(COLOR_3DHILIGHT);
533 HPEN oldPen = SelectObject(hdc,penDark);
534 INT x;
535
536 p1.x = rect.right-1;
537 p1.y = rect.bottom;
538 p2.x = rect.right;
539 p2.y = rect.bottom-1;
540 for (x = 0;x < 3;x++)
541 {
542 SelectObject(hdc,penDark);
543 MoveToEx(hdc,p1.x,p1.y,NULL);
544 LineTo(hdc,p2.x,p2.y);
545 p1.x--;
546 p2.y--;
547 MoveToEx(hdc,p1.x,p1.y,NULL);
548 LineTo(hdc,p2.x,p2.y);
549 SelectObject(hdc,penWhite);
550 p1.x--;
551 p2.y--;
552 MoveToEx(hdc,p1.x,p1.y,NULL);
553 LineTo(hdc,p2.x,p2.y);
554 p1.x -= 2;
555 p2.y -= 2;
556 }
557
558 SelectObject(hdc,oldPen);
559}
560
561/***********************************************************************
562 * SCROLL_DrawScrollBar
563 *
564 * Redraw the whole scrollbar.
565 */
566void SCROLL_DrawScrollBar(HWND hwnd,HDC hdc,INT nBar,BOOL arrows,BOOL interior)
567{
568 INT arrowSize, thumbSize, thumbPos;
569 RECT rect;
570 BOOL vertical;
571 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr( hwnd, nBar );
572
573 if (!infoPtr) return;
574 if (nBar == SB_CTL)
575 {
576 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
577
578 if (dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP))
579 {
580 RECT rect;
581 HBRUSH hBrush;
582
583 hdc = GetDCEx(hwnd,0,DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
584 hBrush = GetSysColorBrush(COLOR_3DFACE);
585 GetClientRect(hwnd,&rect);
586 FillRect(hdc,&rect,hBrush);
587
588 if (dwStyle & SBS_SIZEGRIP)
589 {
590 SCROLL_GetSizeBox(hwnd,dwStyle,&rect);
591 SCROLL_DrawSizeBox(hdc,rect);
592 }
593
594 ReleaseDC(hwnd,hdc);
595
596 return;
597 }
598 }
599
600 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
601 &arrowSize, &thumbSize, &thumbPos );
602
603 /* Draw the arrows */
604
605 if (arrows && arrowSize)
606 {
607 if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
608 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
609 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
610 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
611 else
612 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
613 FALSE, FALSE );
614 }
615
616 if (SCROLL_MovingThumb &&
617 (SCROLL_TrackingWin == hwnd) &&
618 (SCROLL_TrackingBar == nBar))
619 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
620 else if( interior )
621 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
622 thumbPos, infoPtr->flags, vertical, SCROLL_trackHitTest == SCROLL_TOP_RECT && SCROLL_lastHitTest == SCROLL_TOP_RECT,SCROLL_trackHitTest == SCROLL_BOTTOM_RECT && SCROLL_lastHitTest == SCROLL_BOTTOM_RECT);
623}
624
625/***********************************************************************
626 * SCROLL_RefreshScrollBar
627 *
628 * Repaint the scroll bar interior after a SetScrollRange() or
629 * SetScrollPos() call.
630 */
631static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
632 BOOL arrows, BOOL interior )
633{
634 HDC hdc = GetDCEx(hwnd,0,DCX_CACHE | ((nBar == SB_CTL) ? 0:DCX_WINDOW));
635
636 if (!hdc) return;
637
638 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
639 ReleaseDC( hwnd, hdc );
640}
641
642/* Message Handler */
643
644LRESULT SCROLL_NCCreate(HWND hwnd,WPARAM wParam,LPARAM lParam)
645{
646 SCROLLBAR_INFO *infoPtr = (SCROLLBAR_INFO*)malloc(sizeof(SCROLLBAR_INFO));
647
648 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
649 infoPtr->MaxVal = 100;
650 infoPtr->flags = ESB_ENABLE_BOTH;
651
652 SetInfoPtr(hwnd,(DWORD)infoPtr);
653
654 return TRUE;
655}
656
657LRESULT SCROLL_Create(HWND hwnd,WPARAM wParam,LPARAM lParam)
658{
659 CREATESTRUCTA *lpCreat = (CREATESTRUCTA *)lParam;
660
661 if (!(lpCreat->style & (SBS_SIZEBOX | SBS_SIZEGRIP)) && (lpCreat->style & (SBS_LEFTALIGN | SBS_RIGHTALIGN)))
662 {
663 if (lpCreat->style & SBS_VERT)
664 {
665 INT w,h;
666
667 w = GetSystemMetrics(SM_CXVSCROLL);
668 h = lpCreat->cy;
669
670 if (lpCreat->style & SBS_LEFTALIGN)
671 MoveWindow(hwnd,lpCreat->x,lpCreat->y,w,h,FALSE);
672 else if (lpCreat->style & SBS_RIGHTALIGN)
673 MoveWindow(hwnd,lpCreat->x+lpCreat->cx-w,lpCreat->y,w,h,FALSE);
674 } else /* SBS_HORZ */
675 {
676 INT w,h;
677
678 w = lpCreat->cx;
679 h = GetSystemMetrics(SM_CYHSCROLL);
680
681 if (lpCreat->style & SBS_TOPALIGN)
682 MoveWindow(hwnd,lpCreat->x,lpCreat->y,w,h,FALSE);
683 else if (lpCreat->style & SBS_BOTTOMALIGN)
684 MoveWindow(hwnd,lpCreat->x,lpCreat->y+lpCreat->cy-h,w,h,FALSE);
685 }
686 }
687
688 return 0;
689}
690
691/***********************************************************************
692 * SCROLL_HandleScrollEvent
693 *
694 * Handle a mouse or timer event for the scrollbar.
695 * 'pt' is the location of the mouse event in client (for SB_CTL) or
696 * windows coordinates.
697 */
698LRESULT SCROLL_HandleScrollEvent(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar,UINT msg)
699{
700 static POINT prevPt; /* Previous mouse position for timer events */
701 static UINT trackThumbPos; /* Thumb position when tracking started. */
702 static BOOL thumbTrackSent;
703 static INT lastClickPos; /* Position in the scroll-bar of the last button-down event. */
704 static INT lastMousePos; /* Position in the scroll-bar of the last mouse event. */
705 static BOOL timerRunning;
706
707 enum SCROLL_HITTEST hittest;
708 HWND hwndOwner, hwndCtl;
709 BOOL vertical;
710 INT arrowSize, thumbSize, thumbPos;
711 RECT rect;
712 HDC hdc;
713 POINT pt;
714 LRESULT res = 0;
715
716 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
717 if (!infoPtr) return res;
718
719 if (nBar == SB_CTL)
720 {
721 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
722
723 if ((dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP)))
724 {
725 if (!(dwStyle & SBS_SIZEGRIP)) return res;
726
727 if (msg == WM_NCHITTEST)
728 {
729 if (dwStyle & SBS_SIZEGRIP)
730 {
731 RECT rect;
732
733 pt.x = (SHORT)LOWORD(lParam);
734 pt.y = (SHORT)HIWORD(lParam);
735 ScreenToClient(hwnd,&pt);
736 SCROLL_GetSizeBox(hwnd,dwStyle,&rect);
737 if (PtInRect(&rect,pt))
738 {
739 if (dwStyle & SBS_SIZEBOXTOPLEFTALIGN)
740 return HTTOPLEFT;
741 else
742 return HTBOTTOMRIGHT;
743 }
744 }
745 return DefWindowProcA(hwnd,WM_NCHITTEST,wParam,lParam);
746 } else if (msg == WM_LBUTTONDOWN)
747 {
748 return DefWindowProcA(hwnd,WM_LBUTTONDOWN,wParam,lParam);
749 }
750
751 return res;
752 }
753 }
754
755 if (msg == WM_NCHITTEST) return DefWindowProcA(hwnd,WM_NCHITTEST,wParam,lParam);
756
757 vertical = SCROLL_GetScrollBarRect(hwnd,nBar,&rect,&arrowSize,&thumbSize,&thumbPos);
758 hwndOwner = (nBar == SB_CTL) ? GetParent(hwnd):hwnd;
759
760 hwndCtl = (nBar == SB_CTL) ? hwnd:0;
761
762 switch (msg)
763 {
764 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
765 pt.x = (SHORT)LOWORD(lParam);
766 pt.y = (SHORT)HIWORD(lParam);
767 SCROLL_trackVertical = vertical;
768 SCROLL_trackHitTest = hittest = SCROLL_HitTest(hwnd,nBar,pt,FALSE);
769 if (SCROLL_trackHitTest == SCROLL_NOWHERE)
770 {
771 MessageBeep(MB_ICONEXCLAMATION);
772
773 return res;
774 }
775 SCROLL_Scrolling = TRUE;
776 timerRunning = FALSE;
777 if ((SCROLL_FocusWin == hwnd) && SCROLL_Highlighted)
778 {
779 hdc = GetDCEx(hwnd,0,DCX_CACHE | ((nBar == SB_CTL) ? 0:DCX_WINDOW));
780 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
781 ReleaseDC(hwnd,hdc);
782 }
783 lastClickPos = vertical ? pt.y:pt.x;
784 lastMousePos = lastClickPos;
785 trackThumbPos = thumbPos;
786 prevPt = pt;
787 if (nBar == SB_CTL) SetFocus(hwnd);
788 SetCapture(hwnd);
789 break;
790
791 case WM_MOUSEMOVE:
792 if (SCROLL_Scrolling)
793 {
794 pt.x = (SHORT)LOWORD(lParam);
795 pt.y = (SHORT)HIWORD(lParam);
796 hittest = SCROLL_HitTest(hwnd,nBar,pt,TRUE);
797 prevPt = pt;
798 } else return res;
799 break;
800
801 case WM_LBUTTONUP:
802 if (SCROLL_Scrolling)
803 {
804 pt.x = (SHORT)LOWORD(lParam);
805 pt.y = (SHORT)HIWORD(lParam);
806 hittest = SCROLL_NOWHERE;
807 ReleaseCapture();
808 SCROLL_Scrolling = FALSE;
809 } else return res;
810 break;
811
812 case WM_CAPTURECHANGED:
813 if (SCROLL_Scrolling)
814 {
815 hittest = SCROLL_NOWHERE;
816 SCROLL_Scrolling = FALSE;
817 } else return res;
818 break;
819
820 case WM_SETFOCUS:
821 if (nBar == SB_CTL)
822 {
823 SCROLL_FocusWin = hwnd;
824 SCROLL_HasFocus = TRUE;
825 SCROLL_Highlighted = FALSE;
826 SetSystemTimer(hwnd,BLINK_TIMER,SCROLL_BLINK_DELAY,(TIMERPROC)0);
827 }
828 return res;
829
830 case WM_KILLFOCUS:
831 if (SCROLL_FocusWin == hwnd)
832 {
833 SCROLL_FocusWin = 0;
834 SCROLL_HasFocus = FALSE;
835 if (SCROLL_Highlighted)
836 {
837 SCROLL_Highlighted = FALSE;
838 hdc = GetDCEx(hwnd,0,DCX_CACHE | ((nBar == SB_CTL) ? 0:DCX_WINDOW));
839 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
840 ReleaseDC(hwnd,hdc);
841 }
842 KillSystemTimer(hwnd,BLINK_TIMER);
843 }
844 return res;
845
846 case WM_SYSTIMER:
847 if (wParam == SCROLL_TIMER)
848 {
849 pt = prevPt;
850 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
851 break;
852 } else if (wParam == BLINK_TIMER)
853 {
854 SCROLL_Highlighted = ~SCROLL_Highlighted;
855 if (!SCROLL_Scrolling)
856 {
857 hdc = GetDCEx(hwnd,0,DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
858 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
859 ReleaseDC(hwnd,hdc);
860 }
861 return res;
862 } else return res;
863
864 default:
865 return res; /* Should never happen */
866 }
867
868 hdc = GetDCEx(hwnd,0,DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
869
870 switch(SCROLL_trackHitTest)
871 {
872 case SCROLL_NOWHERE: /* No tracking in progress */
873 break;
874
875 case SCROLL_TOP_ARROW:
876 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
877 KillSystemTimer(hwnd,SCROLL_TIMER);
878 else if ((msg == WM_LBUTTONDOWN) || (!timerRunning && msg == WM_SYSTIMER))
879 {
880 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
881 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
882 (TIMERPROC)0 );
883 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
884 }
885
886 if ((msg == WM_LBUTTONDOWN) || (SCROLL_lastHitTest != hittest))
887 {
888 SCROLL_DrawTopArrow(hdc,infoPtr,&rect,arrowSize,vertical,(hittest == SCROLL_trackHitTest));
889 SCROLL_lastHitTest = hittest;
890 }
891 if ((hittest == SCROLL_trackHitTest) && ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)))
892 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_LINEUP,hwndCtl);
893
894 break;
895
896 case SCROLL_TOP_RECT:
897 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
898 KillSystemTimer(hwnd,SCROLL_TIMER);
899 else if ((msg == WM_LBUTTONDOWN) || (!timerRunning && (msg == WM_SYSTIMER)))
900 {
901 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
902 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
903 (TIMERPROC)0 );
904 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
905 }
906
907 if ((msg == WM_LBUTTONDOWN) || (SCROLL_lastHitTest != hittest))
908 {
909 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
910 thumbPos, infoPtr->flags, vertical,
911 (hittest == SCROLL_trackHitTest), FALSE );
912 SCROLL_lastHitTest = hittest;
913 }
914
915 if ((hittest == SCROLL_trackHitTest) && ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)))
916 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_PAGEUP,hwndCtl);
917
918 break;
919
920 case SCROLL_THUMB:
921 if (msg == WM_LBUTTONDOWN)
922 {
923 SCROLL_TrackingWin = hwnd;
924 SCROLL_TrackingBar = nBar;
925 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
926 SCROLL_TrackingVal = infoPtr->CurVal;
927 SCROLL_MovingThumb = TRUE;
928 thumbTrackSent = FALSE;
929 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
930 } else if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
931 {
932 UINT val;
933 INT oldPos = infoPtr->CurVal;
934
935 SCROLL_MovingThumb = FALSE;
936 SCROLL_TrackingWin = 0;
937 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
938 val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
939 trackThumbPos + lastMousePos - lastClickPos );
940
941 if ((val != infoPtr->CurVal) || thumbTrackSent)
942 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
943 MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
944
945 if (oldPos == infoPtr->CurVal)
946 {
947 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
948 &arrowSize, &thumbSize, &thumbPos );
949 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
950 thumbPos, infoPtr->flags, vertical,
951 FALSE, FALSE );
952 }
953
954 ReleaseDC(hwnd,hdc);
955 return res;
956 } else if (msg == WM_MOUSEMOVE)
957 {
958 UINT pos;
959
960 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
961 else
962 {
963 pt = SCROLL_ClipPos( &rect, pt );
964 pos = vertical ? pt.y:pt.x;
965 }
966 if (pos != lastMousePos)
967 {
968 lastMousePos = pos;
969 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
970 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
971 vertical,
972 SCROLL_TrackingPos );
973 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
974 arrowSize, thumbSize );
975 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
976 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
977 hwndCtl );
978 thumbTrackSent = TRUE;
979 }
980 }
981 break;
982
983 case SCROLL_BOTTOM_RECT:
984 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
985 KillSystemTimer(hwnd,SCROLL_TIMER);
986 else if ((msg == WM_LBUTTONDOWN) || (!timerRunning && (msg == WM_SYSTIMER)))
987 {
988 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
989 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
990 (TIMERPROC)0 );
991 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
992 }
993
994 if ((msg == WM_LBUTTONDOWN) || (SCROLL_lastHitTest != hittest))
995 {
996 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
997 thumbPos, infoPtr->flags, vertical,
998 FALSE, (hittest == SCROLL_trackHitTest) );
999 SCROLL_lastHitTest = hittest;
1000 }
1001
1002 if ((hittest == SCROLL_trackHitTest) && ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)))
1003 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_PAGEDOWN,hwndCtl);
1004
1005 break;
1006
1007 case SCROLL_BOTTOM_ARROW:
1008 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
1009 KillSystemTimer(hwnd,SCROLL_TIMER);
1010 else if ((msg == WM_LBUTTONDOWN) || (!timerRunning && (msg == WM_SYSTIMER)))
1011 {
1012 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1013 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1014 (TIMERPROC)0 );
1015 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
1016 }
1017
1018 if ((msg == WM_LBUTTONDOWN) || (SCROLL_lastHitTest != hittest))
1019 {
1020 SCROLL_DrawBottomArrow(hdc,infoPtr,&rect,arrowSize,vertical,(hittest == SCROLL_trackHitTest));
1021 SCROLL_lastHitTest = hittest;
1022 }
1023 if ((hittest == SCROLL_trackHitTest) && ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)))
1024 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_LINEDOWN,hwndCtl);
1025
1026 break;
1027 }
1028
1029 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
1030 {
1031 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
1032
1033 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_ENDSCROLL,hwndCtl);
1034 }
1035
1036 ReleaseDC( hwnd, hdc );
1037
1038 return res;
1039}
1040
1041/***********************************************************************
1042 * SCROLL_HandleKbdEvent
1043 *
1044 * Handle a keyboard event (only for SB_CTL scrollbars).
1045 */
1046LRESULT SCROLL_KeyDown(HWND hwnd,WPARAM wParam,LPARAM lParam)
1047{
1048 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
1049 UINT msg;
1050
1051 if (dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP)) return 0;
1052
1053 switch(wParam)
1054 {
1055 case VK_PRIOR: msg = SB_PAGEUP; break;
1056 case VK_NEXT: msg = SB_PAGEDOWN; break;
1057 case VK_HOME: msg = SB_TOP; break;
1058 case VK_END: msg = SB_BOTTOM; break;
1059 case VK_UP: msg = SB_LINEUP; break;
1060 case VK_DOWN: msg = SB_LINEDOWN; break;
1061 default:
1062 return 0;
1063 }
1064 SendMessageA( GetParent(hwnd),
1065 (dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
1066 msg, hwnd );
1067
1068 return 0;
1069}
1070
1071LRESULT SCROLL_Paint(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar)
1072{
1073 PAINTSTRUCT ps;
1074 HDC hdc = wParam ? (HDC)wParam:BeginPaint( hwnd, &ps );
1075
1076 SCROLL_DrawScrollBar( hwnd, hdc, nBar, TRUE, TRUE );
1077 if (!wParam) EndPaint( hwnd, &ps );
1078
1079 return 0;
1080}
1081
1082LRESULT SCROLL_SetRange(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar,BOOL redraw)
1083{
1084 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
1085 INT oldPos = infoPtr->CurVal;
1086
1087 SetScrollRange(hwnd,nBar,wParam,lParam,redraw);
1088 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1089}
1090
1091/* Window Procedures */
1092
1093/***********************************************************************
1094 * ScrollBarWndProc
1095 */
1096LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam,
1097 LPARAM lParam )
1098{
1099 switch(message)
1100 {
1101 case WM_NCCREATE:
1102 return SCROLL_NCCreate(hwnd,wParam,lParam);
1103
1104 case WM_CREATE:
1105 return SCROLL_Create(hwnd,wParam,lParam);
1106
1107 case WM_LBUTTONDOWN:
1108 case WM_LBUTTONUP:
1109 case WM_NCHITTEST:
1110 case WM_CAPTURECHANGED:
1111 case WM_MOUSEMOVE:
1112 case WM_SYSTIMER:
1113 case WM_SETFOCUS:
1114 case WM_KILLFOCUS:
1115 return SCROLL_HandleScrollEvent(hwnd,wParam,lParam,SB_CTL,message);
1116
1117 case WM_KEYDOWN:
1118 return SCROLL_KeyDown(hwnd,wParam,lParam);
1119
1120 case WM_ERASEBKGND:
1121 return 1;
1122
1123 case WM_GETDLGCODE:
1124 return DLGC_WANTARROWS; /* Windows returns this value */
1125
1126 case WM_PAINT:
1127 return SCROLL_Paint(hwnd,wParam,lParam,SB_CTL);
1128
1129 case SBM_SETPOS:
1130 return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
1131
1132 case SBM_GETPOS:
1133 return GetScrollPos( hwnd, SB_CTL );
1134
1135 case SBM_SETRANGE:
1136 return SCROLL_SetRange(hwnd,wParam,lParam,SB_CTL,FALSE);
1137
1138 case SBM_GETRANGE:
1139 GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
1140 return 0;
1141
1142 case SBM_ENABLE_ARROWS:
1143 return EnableScrollBar( hwnd, SB_CTL, wParam );
1144
1145 case SBM_SETRANGEREDRAW:
1146 return SCROLL_SetRange(hwnd,wParam,lParam,SB_CTL,TRUE);
1147
1148 case SBM_SETSCROLLINFO:
1149 return SetScrollInfo(hwnd,SB_CTL,(SCROLLINFO*)lParam,wParam);
1150
1151 case SBM_GETSCROLLINFO:
1152 return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
1153
1154 case 0x00e5:
1155 case 0x00e7:
1156 case 0x00e8:
1157 case 0x00eb:
1158 case 0x00ec:
1159 case 0x00ed:
1160 case 0x00ee:
1161 case 0x00ef:
1162 //ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
1163 // message, wParam, lParam );
1164 break;
1165
1166 default:
1167 return DefWindowProcA( hwnd, message, wParam, lParam );
1168 }
1169
1170 return 0;
1171}
1172
1173/* Scrollbar API */
1174
1175/*************************************************************************
1176 * SetScrollInfo (USER32.501)
1177 * SetScrollInfo32 can be used to set the position, upper bound,
1178 * lower bound, and page size of a scrollbar control.
1179 *
1180 * RETURNS
1181 * Scrollbar position
1182 *
1183 * NOTE
1184 * For 100 lines of text to be displayed in a window of 25 lines,
1185 * one would for instance use info->nMin=0, info->nMax=75
1186 * (corresponding to the 76 different positions of the window on
1187 * the text), and info->nPage=25.
1188 */
1189INT WINAPI SetScrollInfo(HWND hwnd,INT nBar,const SCROLLINFO *info,BOOL bRedraw)
1190{
1191 /* Update the scrollbar state and set action flags according to
1192 * what has to be done graphics wise. */
1193
1194 SCROLLBAR_INFO *infoPtr;
1195 UINT new_flags;
1196 INT action = 0;
1197
1198 dprintf(("USER32: SetScrollInfo"));
1199
1200 if (!(infoPtr = SCROLL_GetInfoPtr(hwnd,nBar))) return 0;
1201 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1202 if ((info->cbSize != sizeof(*info)) &&
1203 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1204
1205 /* Set the page size */
1206 if (info->fMask & SIF_PAGE)
1207 {
1208 if( infoPtr->Page != info->nPage )
1209 {
1210 infoPtr->Page = info->nPage;
1211 action |= SA_SSI_REPAINT_INTERIOR;
1212 }
1213 }
1214
1215 /* Set the scroll pos */
1216 if (info->fMask & SIF_POS)
1217 {
1218 //dsprintf(scroll, " pos=%d", info->nPos );
1219 if( infoPtr->CurVal != info->nPos )
1220 {
1221 infoPtr->CurVal = info->nPos;
1222 action |= SA_SSI_MOVE_THUMB;
1223 }
1224 }
1225
1226 /* Set the scroll range */
1227 if (info->fMask & SIF_RANGE)
1228 {
1229 /* Invalid range -> range is set to (0,0) */
1230 if ((info->nMin > info->nMax) ||
1231 ((UINT)(info->nMax - info->nMin) >= 0x80000000))
1232 {
1233 infoPtr->MinVal = 0;
1234 infoPtr->MaxVal = 0;
1235 }
1236 else
1237 {
1238 if( infoPtr->MinVal != info->nMin ||
1239 infoPtr->MaxVal != info->nMax )
1240 {
1241 action |= SA_SSI_REPAINT_INTERIOR;
1242 infoPtr->MinVal = info->nMin;
1243 infoPtr->MaxVal = info->nMax;
1244 }
1245 }
1246 }
1247
1248 /* Make sure the page size is valid */
1249
1250 if (infoPtr->Page < 0) infoPtr->Page = 0;
1251 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1252 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1253
1254 /* Make sure the pos is inside the range */
1255
1256 if (infoPtr->CurVal < infoPtr->MinVal)
1257 infoPtr->CurVal = infoPtr->MinVal;
1258 else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1259 infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
1260
1261 //TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1262 // infoPtr->Page, infoPtr->CurVal,
1263 // infoPtr->MinVal, infoPtr->MaxVal );
1264
1265 /* don't change the scrollbar state if SetScrollInfo
1266 * is just called with SIF_DISABLENOSCROLL
1267 */
1268 if(!(info->fMask & SIF_ALL)) goto done;
1269
1270 /* Check if the scrollbar should be hidden or disabled */
1271 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1272 {
1273 new_flags = infoPtr->flags;
1274 if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1275 {
1276 /* Hide or disable scroll-bar */
1277 if (info->fMask & SIF_DISABLENOSCROLL)
1278 {
1279 new_flags = ESB_DISABLE_BOTH;
1280 action |= SA_SSI_REFRESH;
1281 } else if (nBar != SB_CTL)
1282 {
1283 action = SA_SSI_HIDE;
1284 infoPtr->flags = 0;
1285 goto done;
1286 }
1287 } else /* Show and enable scroll-bar */
1288 {
1289 new_flags = 0;
1290 if (nBar != SB_CTL) action |= SA_SSI_SHOW;
1291 if (infoPtr->flags) action |= SA_SSI_REFRESH;
1292 }
1293
1294 if (infoPtr->flags != new_flags) /* check arrow flags */
1295 {
1296 infoPtr->flags = new_flags;
1297 action |= SA_SSI_REPAINT_ARROWS;
1298 }
1299 }
1300
1301done:
1302 /* Update scrollbar */
1303
1304 if( action & SA_SSI_HIDE )
1305 ShowScrollBar(hwnd,nBar,FALSE);
1306 else
1307 {
1308 if(action & SA_SSI_SHOW)
1309 ShowScrollBar(hwnd,nBar,TRUE);
1310
1311 if (bRedraw)
1312 {
1313 if (action & SA_SSI_REFRESH)
1314 SCROLL_RefreshScrollBar(hwnd,nBar,TRUE,TRUE);
1315 else
1316 {
1317 if (action & (SA_SSI_REPAINT_INTERIOR | SA_SSI_MOVE_THUMB))
1318 SCROLL_RefreshScrollBar(hwnd,nBar,FALSE,TRUE);
1319 if (action & SA_SSI_REPAINT_ARROWS)
1320 SCROLL_RefreshScrollBar(hwnd,nBar,TRUE,FALSE);
1321 }
1322 }
1323 }
1324
1325 /* Return current position */
1326
1327 return infoPtr->CurVal;
1328}
1329/*************************************************************************
1330 * GetScrollInfo (USER32.284)
1331 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1332 * lower bound, and page size of a scrollbar control.
1333 *
1334 * RETURNS STD
1335 */
1336BOOL WINAPI GetScrollInfo(
1337 HWND hwnd /* [I] Handle of window */ ,
1338 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1339 LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1340{
1341 SCROLLBAR_INFO *infoPtr;
1342
1343 dprintf(("USER32: GetScrollInfo"));
1344
1345 if (!(infoPtr = SCROLL_GetInfoPtr(hwnd,nBar))) return FALSE;
1346 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1347 if ((info->cbSize != sizeof(*info)) &&
1348 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1349
1350 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1351 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1352 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1353 info->nTrackPos = (SCROLL_MovingThumb && SCROLL_TrackingWin == hwnd && SCROLL_TrackingBar == nBar) ? SCROLL_TrackingVal:infoPtr->CurVal;
1354
1355 if (info->fMask & SIF_RANGE)
1356 {
1357 info->nMin = infoPtr->MinVal;
1358 info->nMax = infoPtr->MaxVal;
1359 }
1360 return (info->fMask & SIF_ALL) != 0;
1361}
1362/*************************************************************************
1363 * SetScrollPos (USER32.502)
1364 *
1365 * RETURNS
1366 * Success: Scrollbar position
1367 * Failure: 0
1368 *
1369 * REMARKS
1370 * Note the ambiguity when 0 is returned. Use GetLastError
1371 * to make sure there was an error (and to know which one).
1372 */
1373INT WINAPI SetScrollPos(
1374 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1375 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1376 INT nPos /* [I] New value */,
1377 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
1378{
1379 SCROLLINFO info;
1380 SCROLLBAR_INFO *infoPtr;
1381 INT oldPos;
1382
1383 dprintf(("SetScrollPos %x %d %d %d", hwnd, nBar, nPos, bRedraw));
1384 if (!(infoPtr = SCROLL_GetInfoPtr(hwnd,nBar))) return 0;
1385 oldPos = infoPtr->CurVal;
1386 info.cbSize = sizeof(info);
1387 info.nPos = nPos;
1388 info.fMask = SIF_POS;
1389 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1390 return oldPos;
1391}
1392/*************************************************************************
1393 * GetScrollPos (USER32.285)
1394 *
1395 * RETURNS
1396 * Success: Current position
1397 * Failure: 0
1398 *
1399 * REMARKS
1400 * Note the ambiguity when 0 is returned. Use GetLastError
1401 * to make sure there was an error (and to know which one).
1402 */
1403INT WINAPI GetScrollPos(
1404 HWND hwnd, /* [I] Handle of window */
1405 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1406{
1407 SCROLLBAR_INFO *infoPtr;
1408
1409 dprintf(("GetScrollPos %x %d", hwnd, nBar));
1410
1411 infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
1412 if (!infoPtr) return 0;
1413
1414 return infoPtr->CurVal;
1415}
1416
1417/*************************************************************************
1418 * SetScrollRange (USER32.503)
1419 *
1420 * RETURNS STD
1421 */
1422BOOL WINAPI SetScrollRange(
1423 HWND hwnd, /* [I] Handle of window whose scrollbar will be affected */
1424 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1425 INT MinVal, /* [I] New minimum value */
1426 INT MaxVal, /* [I] New maximum value */
1427 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1428{
1429 SCROLLINFO info;
1430
1431 dprintf(("SetScrollRange %x %x %d %d %d", hwnd, nBar, MinVal, MaxVal, bRedraw));
1432 info.cbSize = sizeof(info);
1433 info.nMin = MinVal;
1434 info.nMax = MaxVal;
1435 info.fMask = SIF_RANGE;
1436 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1437 return TRUE;
1438}
1439
1440/*************************************************************************
1441 * GetScrollRange (USER32.286)
1442 *
1443 * RETURNS STD
1444 */
1445BOOL WINAPI GetScrollRange(
1446 HWND hwnd, /* [I] Handle of window */
1447 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1448 LPINT lpMin, /* [O] Where to store minimum value */
1449 LPINT lpMax /* [O] Where to store maximum value */)
1450{
1451 SCROLLBAR_INFO *infoPtr;
1452
1453 infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
1454 if (!infoPtr)
1455 {
1456 if (lpMin) lpMin = 0;
1457 if (lpMax) lpMax = 0;
1458 return FALSE;
1459 }
1460 if (lpMin) *lpMin = infoPtr->MinVal;
1461 if (lpMax) *lpMax = infoPtr->MaxVal;
1462 return TRUE;
1463}
1464
1465/*************************************************************************
1466 * ShowScrollBar (USER32.532)
1467 *
1468 * RETURNS STD
1469 */
1470BOOL WINAPI ShowScrollBar(
1471 HWND hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
1472 INT nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1473 BOOL fShow /* [I] TRUE = show, FALSE = hide */)
1474{
1475 Win32BaseWindow *win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
1476 BOOL fShowH = (nBar == SB_HORZ) ? fShow : 0;
1477 BOOL fShowV = (nBar == SB_VERT) ? fShow : 0;
1478
1479 dprintf(("ShowScrollBar %04x %d %d\n", hwnd, nBar, fShow));
1480 if (!win32wnd) return FALSE;
1481
1482 switch(nBar)
1483 {
1484 case SB_CTL:
1485 ShowWindow(hwnd,fShow ? SW_SHOW:SW_HIDE);
1486 return TRUE;
1487
1488 case SB_BOTH:
1489 case SB_HORZ:
1490 if (fShow)
1491 {
1492 fShowH = !(win32wnd->getStyle() & WS_HSCROLL);
1493 win32wnd->setStyle(win32wnd->getStyle() | WS_HSCROLL);
1494 }
1495 else /* hide it */
1496 {
1497 fShowH = (win32wnd->getStyle() & WS_HSCROLL);
1498 win32wnd->setStyle(win32wnd->getStyle() & ~WS_HSCROLL);
1499 }
1500 if( nBar == SB_HORZ )
1501 {
1502 fShowV = FALSE;
1503 break;
1504 }
1505 /* fall through */
1506
1507 case SB_VERT:
1508 if (fShowV)
1509 {
1510 fShowV = !(win32wnd->getStyle() & WS_VSCROLL);
1511 win32wnd->setStyle(win32wnd->getStyle() | WS_VSCROLL);
1512 }
1513 else /* hide it */
1514 {
1515 fShowV = (win32wnd->getStyle() & WS_VSCROLL);
1516 win32wnd->setStyle(win32wnd->getStyle() & ~WS_VSCROLL);
1517 }
1518 if ( nBar == SB_VERT )
1519 fShowH = FALSE;
1520 break;
1521
1522 default:
1523 return TRUE; /* Nothing to do! */
1524 }
1525
1526 if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */
1527 {
1528 SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
1529 | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
1530 }
1531
1532 return TRUE;
1533}
1534
1535/*************************************************************************
1536 * EnableScrollBar (USER32.171)
1537 */
1538BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags)
1539{
1540 BOOL bFineWithMe;
1541 SCROLLBAR_INFO *infoPtr;
1542
1543 dprintf(("EnableScrollBar %04x %d %d\n", hwnd, nBar, flags));
1544
1545 flags &= ESB_DISABLE_BOTH;
1546
1547 if (nBar == SB_BOTH)
1548 {
1549 if (!(infoPtr = SCROLL_GetInfoPtr( hwnd, SB_VERT ))) return FALSE;
1550 if (!(bFineWithMe = (infoPtr->flags == flags)) )
1551 {
1552 infoPtr->flags = flags;
1553 SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE );
1554 }
1555 nBar = SB_HORZ;
1556 }
1557 else
1558 bFineWithMe = TRUE;
1559
1560 if (!(infoPtr = SCROLL_GetInfoPtr( hwnd, nBar ))) return FALSE;
1561 if (bFineWithMe && infoPtr->flags == flags) return FALSE;
1562 infoPtr->flags = flags;
1563
1564 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1565 return TRUE;
1566}
1567
1568//CB: not listed in user32.exp -> don't know the id!
1569
1570BOOL WINAPI GetScrollBarInfo(HWND hwnd,LONG idObject,PSCROLLBARINFO psbi)
1571{
1572 if (!psbi || (psbi->cbSize != sizeof(SCROLLBARINFO)))
1573 {
1574 SetLastError(ERROR_INVALID_PARAMETER);
1575
1576 return FALSE;
1577 }
1578
1579 INT nBar,arrowSize;
1580
1581 switch (idObject)
1582 {
1583 case OBJID_CLIENT:
1584 nBar = SB_CTL;
1585 break;
1586
1587 case OBJID_HSCROLL:
1588 nBar = SB_HORZ;
1589 break;
1590
1591 case OBJID_VSCROLL:
1592 nBar = SB_VERT;
1593 break;
1594
1595 default:
1596 return FALSE;
1597 }
1598
1599 SCROLL_GetScrollBarRect(hwnd,nBar,&psbi->rcScrollBar,&arrowSize,&psbi->dxyLineButton,&psbi->xyThumbTop);
1600 psbi->xyThumbBottom = psbi->xyThumbTop+psbi->dxyLineButton;
1601 psbi->bogus = 0; //CB: undocumented!
1602 psbi->rgstate[0] = IsWindowVisible(hwnd) ? STATE_SYSTEM_INVISIBLE:0;
1603 psbi->rgstate[1] = psbi->rgstate[2] = psbi->rgstate[3] = psbi->rgstate[4] = psbi->rgstate[5] = psbi->rgstate[0]; //CB: todo
1604
1605 return TRUE;
1606}
1607//******************************************************************************
1608//******************************************************************************
1609BOOL SCROLLBAR_Register()
1610{
1611 WNDCLASSA wndClass;
1612
1613//SvL: Don't check this now
1614// if (GlobalFindAtomA(SCROLLBARCLASSNAME)) return FALSE;
1615
1616 ZeroMemory(&wndClass,sizeof(WNDCLASSA));
1617 wndClass.style = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW | CS_PARENTDC;
1618 wndClass.lpfnWndProc = (WNDPROC)ScrollBarWndProc;
1619 wndClass.cbClsExtra = 0;
1620 wndClass.cbWndExtra = sizeof(SCROLLBAR_INFO);
1621 wndClass.hCursor = LoadCursorA(0,IDC_ARROWA);
1622 wndClass.hbrBackground = (HBRUSH)0;
1623 wndClass.lpszClassName = SCROLLBARCLASSNAME;
1624
1625 return RegisterClassA(&wndClass);
1626}
1627//******************************************************************************
1628//******************************************************************************
1629BOOL SCROLLBAR_Unregister()
1630{
1631 if (GlobalFindAtomA(SCROLLBARCLASSNAME))
1632 return UnregisterClassA(SCROLLBARCLASSNAME,(HINSTANCE)NULL);
1633 else return FALSE;
1634}
1635//******************************************************************************
1636//******************************************************************************
1637
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