4 * Copyright 1993 Martin Ayotte
5 * Copyright 1994, 1996 Alexandre Julliard
8 #include "wine/winuser16.h"
12 #include "debugtools.h"
14 DEFAULT_DEBUG_CHANNEL(scroll
)
17 static HBITMAP hUpArrow
= 0;
18 static HBITMAP hDnArrow
= 0;
19 static HBITMAP hLfArrow
= 0;
20 static HBITMAP hRgArrow
= 0;
21 static HBITMAP hUpArrowD
= 0;
22 static HBITMAP hDnArrowD
= 0;
23 static HBITMAP hLfArrowD
= 0;
24 static HBITMAP hRgArrowD
= 0;
25 static HBITMAP hUpArrowI
= 0;
26 static HBITMAP hDnArrowI
= 0;
27 static HBITMAP hLfArrowI
= 0;
28 static HBITMAP hRgArrowI
= 0;
30 #define TOP_ARROW(flags,pressed) \
31 (((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
32 #define BOTTOM_ARROW(flags,pressed) \
33 (((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
34 #define LEFT_ARROW(flags,pressed) \
35 (((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
36 #define RIGHT_ARROW(flags,pressed) \
37 (((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
40 /* Minimum size of the rectangle between the arrows */
41 #define SCROLL_MIN_RECT 4
43 /* Minimum size of the thumb in pixels */
44 #define SCROLL_MIN_THUMB 6
46 /* Overlap between arrows and thumb */
47 #define SCROLL_ARROW_THUMB_OVERLAP 1
49 /* Delay (in ms) before first repetition when holding the button down */
50 #define SCROLL_FIRST_DELAY 200
52 /* Delay (in ms) between scroll repetitions */
53 #define SCROLL_REPEAT_DELAY 50
56 #define SCROLL_TIMER 0
58 /* Scroll-bar hit testing */
61 SCROLL_NOWHERE
, /* Outside the scroll bar */
62 SCROLL_TOP_ARROW
, /* Top or left arrow */
63 SCROLL_TOP_RECT
, /* Rectangle between the top arrow and the thumb */
64 SCROLL_THUMB
, /* Thumb rectangle */
65 SCROLL_BOTTOM_RECT
, /* Rectangle between the thumb and the bottom arrow */
66 SCROLL_BOTTOM_ARROW
/* Bottom or right arrow */
69 /* What to do after SCROLL_SetScrollInfo() */
70 #define SA_SSI_HIDE 0x0001
71 #define SA_SSI_SHOW 0x0002
72 #define SA_SSI_REFRESH 0x0004
73 #define SA_SSI_REPAINT_ARROWS 0x0008
75 /* Thumb-tracking info */
76 static HWND SCROLL_TrackingWin
= 0;
77 static INT SCROLL_TrackingBar
= 0;
78 static INT SCROLL_TrackingPos
= 0;
79 static INT SCROLL_TrackingVal
= 0;
80 /* Hit test code of the last button-down event */
81 static enum SCROLL_HITTEST SCROLL_trackHitTest
;
82 static BOOL SCROLL_trackVertical
;
84 /* Is the moving thumb being displayed? */
85 static BOOL SCROLL_MovingThumb
= FALSE
;
88 static BOOL
SCROLL_ShowScrollBar( HWND hwnd
, INT nBar
,
89 BOOL fShowH
, BOOL fShowV
);
90 static INT
SCROLL_SetScrollInfo( HWND hwnd
, INT nBar
,
91 const SCROLLINFO
*info
, INT
*action
);
93 /***********************************************************************
96 static void SCROLL_LoadBitmaps(void)
98 hUpArrow
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROW
) );
99 hDnArrow
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROW
) );
100 hLfArrow
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROW
) );
101 hRgArrow
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROW
) );
102 hUpArrowD
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWD
) );
103 hDnArrowD
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWD
) );
104 hLfArrowD
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWD
) );
105 hRgArrowD
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWD
) );
106 hUpArrowI
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWI
) );
107 hDnArrowI
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWI
) );
108 hLfArrowI
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWI
) );
109 hRgArrowI
= LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWI
) );
113 /***********************************************************************
114 * SCROLL_GetPtrScrollInfo
116 static SCROLLBAR_INFO
*SCROLL_GetPtrScrollInfo( WND
* wndPtr
, INT nBar
)
118 SCROLLBAR_INFO
*infoPtr
;
120 if (!wndPtr
) return NULL
;
123 case SB_HORZ
: infoPtr
= (SCROLLBAR_INFO
*)wndPtr
->pHScroll
; break;
124 case SB_VERT
: infoPtr
= (SCROLLBAR_INFO
*)wndPtr
->pVScroll
; break;
125 case SB_CTL
: infoPtr
= (SCROLLBAR_INFO
*)wndPtr
->wExtra
; break;
126 default: return NULL
;
129 if (!infoPtr
) /* Create the info structure if needed */
131 if ((infoPtr
= HeapAlloc( SystemHeap
, 0, sizeof(SCROLLBAR_INFO
) )))
133 infoPtr
->MinVal
= infoPtr
->CurVal
= infoPtr
->Page
= 0;
134 infoPtr
->MaxVal
= 100;
135 infoPtr
->flags
= ESB_ENABLE_BOTH
;
136 if (nBar
== SB_HORZ
) wndPtr
->pHScroll
= infoPtr
;
137 else wndPtr
->pVScroll
= infoPtr
;
139 if (!hUpArrow
) SCROLL_LoadBitmaps();
145 /***********************************************************************
146 * SCROLL_GetScrollInfo
148 static SCROLLBAR_INFO
*SCROLL_GetScrollInfo( HWND hwnd
, INT nBar
)
150 SCROLLBAR_INFO
*retvalue
;
151 WND
*wndPtr
= WIN_FindWndPtr( hwnd
);
152 retvalue
= SCROLL_GetPtrScrollInfo( wndPtr
, nBar
);
153 WIN_ReleaseWndPtr(wndPtr
);
158 /***********************************************************************
159 * SCROLL_GetScrollBarRect
161 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
162 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
163 * 'arrowSize' returns the width or height of an arrow (depending on
164 * the orientation of the scrollbar), 'thumbSize' returns the size of
165 * the thumb, and 'thumbPos' returns the position of the thumb
166 * relative to the left or to the top.
167 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
169 static BOOL
SCROLL_GetScrollBarRect( HWND hwnd
, INT nBar
, RECT
*lprect
,
170 INT
*arrowSize
, INT
*thumbSize
,
175 WND
*wndPtr
= WIN_FindWndPtr( hwnd
);
180 lprect
->left
= wndPtr
->rectClient
.left
- wndPtr
->rectWindow
.left
;
181 lprect
->top
= wndPtr
->rectClient
.bottom
- wndPtr
->rectWindow
.top
;
182 lprect
->right
= wndPtr
->rectClient
.right
- wndPtr
->rectWindow
.left
;
183 lprect
->bottom
= lprect
->top
+ GetSystemMetrics(SM_CYHSCROLL
);
184 if(wndPtr
->dwStyle
& WS_BORDER
) {
187 } else if(wndPtr
->dwStyle
& WS_VSCROLL
)
193 lprect
->left
= wndPtr
->rectClient
.right
- wndPtr
->rectWindow
.left
;
194 lprect
->top
= wndPtr
->rectClient
.top
- wndPtr
->rectWindow
.top
;
195 lprect
->right
= lprect
->left
+ GetSystemMetrics(SM_CXVSCROLL
);
196 lprect
->bottom
= wndPtr
->rectClient
.bottom
- wndPtr
->rectWindow
.top
;
197 if(wndPtr
->dwStyle
& WS_BORDER
) {
200 } else if(wndPtr
->dwStyle
& WS_HSCROLL
)
206 GetClientRect( hwnd
, lprect
);
207 vertical
= ((wndPtr
->dwStyle
& SBS_VERT
) != 0);
211 WIN_ReleaseWndPtr(wndPtr
);
215 if (vertical
) pixels
= lprect
->bottom
- lprect
->top
;
216 else pixels
= lprect
->right
- lprect
->left
;
218 if (pixels
<= 2*GetSystemMetrics(SM_CXVSCROLL
) + SCROLL_MIN_RECT
)
220 if (pixels
> SCROLL_MIN_RECT
)
221 *arrowSize
= (pixels
- SCROLL_MIN_RECT
) / 2;
224 *thumbPos
= *thumbSize
= 0;
228 SCROLLBAR_INFO
*info
= SCROLL_GetPtrScrollInfo( wndPtr
, nBar
);
230 *arrowSize
= GetSystemMetrics(SM_CXVSCROLL
);
231 pixels
-= (2 * (GetSystemMetrics(SM_CXVSCROLL
) - SCROLL_ARROW_THUMB_OVERLAP
));
235 *thumbSize
= pixels
* info
->Page
/ (info
->MaxVal
-info
->MinVal
+1);
236 if (*thumbSize
< SCROLL_MIN_THUMB
) *thumbSize
= SCROLL_MIN_THUMB
;
238 else *thumbSize
= GetSystemMetrics(SM_CXVSCROLL
);
240 if (((pixels
-= *thumbSize
) < 0) ||
241 ((info
->flags
& ESB_DISABLE_BOTH
) == ESB_DISABLE_BOTH
))
243 /* Rectangle too small or scrollbar disabled -> no thumb */
244 *thumbPos
= *thumbSize
= 0;
248 INT max
= info
->MaxVal
- MAX( info
->Page
-1, 0 );
249 if (info
->MinVal
>= max
)
250 *thumbPos
= *arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
252 *thumbPos
= *arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
253 + pixels
* (info
->CurVal
-info
->MinVal
) / (max
- info
->MinVal
);
256 WIN_ReleaseWndPtr(wndPtr
);
261 /***********************************************************************
264 * Compute the current scroll position based on the thumb position in pixels
265 * from the top of the scroll-bar.
267 static UINT
SCROLL_GetThumbVal( SCROLLBAR_INFO
*infoPtr
, RECT
*rect
,
268 BOOL vertical
, INT pos
)
271 INT pixels
= vertical
? rect
->bottom
-rect
->top
: rect
->right
-rect
->left
;
273 if ((pixels
-= 2*(GetSystemMetrics(SM_CXVSCROLL
) - SCROLL_ARROW_THUMB_OVERLAP
)) <= 0)
274 return infoPtr
->MinVal
;
278 thumbSize
= pixels
* infoPtr
->Page
/(infoPtr
->MaxVal
-infoPtr
->MinVal
+1);
279 if (thumbSize
< SCROLL_MIN_THUMB
) thumbSize
= SCROLL_MIN_THUMB
;
281 else thumbSize
= GetSystemMetrics(SM_CXVSCROLL
);
283 if ((pixels
-= thumbSize
) <= 0) return infoPtr
->MinVal
;
285 pos
= MAX( 0, pos
- (GetSystemMetrics(SM_CXVSCROLL
) - SCROLL_ARROW_THUMB_OVERLAP
) );
286 if (pos
> pixels
) pos
= pixels
;
288 if (!infoPtr
->Page
) pos
*= infoPtr
->MaxVal
- infoPtr
->MinVal
;
289 else pos
*= infoPtr
->MaxVal
- infoPtr
->MinVal
- infoPtr
->Page
+ 1;
290 return infoPtr
->MinVal
+ ((pos
+ pixels
/ 2) / pixels
);
293 /***********************************************************************
296 static BOOL
SCROLL_PtInRectEx( LPRECT lpRect
, POINT pt
, BOOL vertical
)
302 rect
.left
-= lpRect
->right
- lpRect
->left
;
303 rect
.right
+= lpRect
->right
- lpRect
->left
;
307 rect
.top
-= lpRect
->bottom
- lpRect
->top
;
308 rect
.bottom
+= lpRect
->bottom
- lpRect
->top
;
310 return PtInRect( &rect
, pt
);
313 /***********************************************************************
316 static POINT
SCROLL_ClipPos( LPRECT lpRect
, POINT pt
)
318 if( pt
.x
< lpRect
->left
)
321 if( pt
.x
> lpRect
->right
)
322 pt
.x
= lpRect
->right
;
324 if( pt
.y
< lpRect
->top
)
327 if( pt
.y
> lpRect
->bottom
)
328 pt
.y
= lpRect
->bottom
;
334 /***********************************************************************
337 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
339 static enum SCROLL_HITTEST
SCROLL_HitTest( HWND hwnd
, INT nBar
,
340 POINT pt
, BOOL bDragging
)
342 INT arrowSize
, thumbSize
, thumbPos
;
345 BOOL vertical
= SCROLL_GetScrollBarRect( hwnd
, nBar
, &rect
,
346 &arrowSize
, &thumbSize
, &thumbPos
);
348 if ( (bDragging
&& !SCROLL_PtInRectEx( &rect
, pt
, vertical
)) ||
349 (!PtInRect( &rect
, pt
)) ) return SCROLL_NOWHERE
;
353 if (pt
.y
< rect
.top
+ arrowSize
) return SCROLL_TOP_ARROW
;
354 if (pt
.y
>= rect
.bottom
- arrowSize
) return SCROLL_BOTTOM_ARROW
;
355 if (!thumbPos
) return SCROLL_TOP_RECT
;
357 if (pt
.y
< thumbPos
) return SCROLL_TOP_RECT
;
358 if (pt
.y
>= thumbPos
+ thumbSize
) return SCROLL_BOTTOM_RECT
;
360 else /* horizontal */
362 if (pt
.x
< rect
.left
+ arrowSize
) return SCROLL_TOP_ARROW
;
363 if (pt
.x
>= rect
.right
- arrowSize
) return SCROLL_BOTTOM_ARROW
;
364 if (!thumbPos
) return SCROLL_TOP_RECT
;
366 if (pt
.x
< thumbPos
) return SCROLL_TOP_RECT
;
367 if (pt
.x
>= thumbPos
+ thumbSize
) return SCROLL_BOTTOM_RECT
;
373 /***********************************************************************
376 * Draw the scroll bar arrows.
378 static void SCROLL_DrawArrows( HDC hdc
, SCROLLBAR_INFO
*infoPtr
,
379 RECT
*rect
, INT arrowSize
, BOOL vertical
,
380 BOOL top_pressed
, BOOL bottom_pressed
)
382 HDC hdcMem
= CreateCompatibleDC( hdc
);
383 HBITMAP hbmpPrev
= SelectObject( hdcMem
, vertical
?
384 TOP_ARROW(infoPtr
->flags
, top_pressed
)
385 : LEFT_ARROW(infoPtr
->flags
, top_pressed
));
387 SetStretchBltMode( hdc
, STRETCH_DELETESCANS
);
388 StretchBlt( hdc
, rect
->left
, rect
->top
,
389 vertical
? rect
->right
-rect
->left
: arrowSize
,
390 vertical
? arrowSize
: rect
->bottom
-rect
->top
,
392 GetSystemMetrics(SM_CXVSCROLL
),GetSystemMetrics(SM_CYHSCROLL
),
395 SelectObject( hdcMem
, vertical
?
396 BOTTOM_ARROW( infoPtr
->flags
, bottom_pressed
)
397 : RIGHT_ARROW( infoPtr
->flags
, bottom_pressed
) );
399 StretchBlt( hdc
, rect
->left
, rect
->bottom
- arrowSize
,
400 rect
->right
- rect
->left
, arrowSize
,
402 GetSystemMetrics(SM_CXVSCROLL
),GetSystemMetrics(SM_CYHSCROLL
),
405 StretchBlt( hdc
, rect
->right
- arrowSize
, rect
->top
,
406 arrowSize
, rect
->bottom
- rect
->top
,
408 GetSystemMetrics(SM_CXVSCROLL
), GetSystemMetrics(SM_CYHSCROLL
),
410 SelectObject( hdcMem
, hbmpPrev
);
415 /***********************************************************************
416 * SCROLL_DrawMovingThumb
418 * Draw the moving thumb rectangle.
420 static void SCROLL_DrawMovingThumb( HDC hdc
, RECT
*rect
, BOOL vertical
,
421 INT arrowSize
, INT thumbSize
)
426 r
.top
+= SCROLL_TrackingPos
;
427 if (r
.top
< rect
->top
+ arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
)
428 r
.top
= rect
->top
+ arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
429 if (r
.top
+ thumbSize
>
430 rect
->bottom
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
))
431 r
.top
= rect
->bottom
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
)
433 r
.bottom
= r
.top
+ thumbSize
;
437 r
.left
+= SCROLL_TrackingPos
;
438 if (r
.left
< rect
->left
+ arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
)
439 r
.left
= rect
->left
+ arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
440 if (r
.left
+ thumbSize
>
441 rect
->right
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
))
442 r
.left
= rect
->right
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
)
444 r
.right
= r
.left
+ thumbSize
;
446 DrawFocusRect( hdc
, &r
);
447 SCROLL_MovingThumb
= !SCROLL_MovingThumb
;
451 /***********************************************************************
452 * SCROLL_DrawInterior
454 * Draw the scroll bar interior (everything except the arrows).
456 static void SCROLL_DrawInterior( HWND hwnd
, HDC hdc
, INT nBar
,
457 RECT
*rect
, INT arrowSize
,
458 INT thumbSize
, INT thumbPos
,
459 UINT flags
, BOOL vertical
,
460 BOOL top_selected
, BOOL bottom_selected
)
464 /* Select the correct brush and pen */
466 SelectObject( hdc
, GetSysColorPen(COLOR_WINDOWFRAME
) );
467 if ((flags
& ESB_DISABLE_BOTH
) == ESB_DISABLE_BOTH
)
469 /* This ought to be the color of the parent window */
470 SelectObject( hdc
, GetSysColorBrush(COLOR_WINDOW
) );
474 if (nBar
== SB_CTL
) /* Only scrollbar controls send WM_CTLCOLOR */
476 HBRUSH hbrush
= SendMessageA(GetParent(hwnd
),
477 WM_CTLCOLORSCROLLBAR
, hdc
, hwnd
);
478 SelectObject( hdc
, hbrush
);
480 else SelectObject( hdc
, GetSysColorBrush(COLOR_SCROLLBAR
) );
483 /* Calculate the scroll rectangle */
488 r
.top
+= arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
489 r
.bottom
-= (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
493 r
.left
+= arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
494 r
.right
-= (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
497 /* Draw the scroll bar frame */
499 Rectangle( hdc
, r
.left
, r
.top
, r
.right
, r
.bottom
);
501 /* Draw the scroll rectangles and thumb */
503 if (!thumbPos
) /* No thumb to draw */
505 PatBlt( hdc
, r
.left
+1, r
.top
+1, r
.right
- r
.left
- 2,
506 r
.bottom
- r
.top
- 2, PATCOPY
);
512 PatBlt( hdc
, r
.left
+ 1, r
.top
+ 1,
513 r
.right
- r
.left
- 2,
514 thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
) - 1,
515 top_selected
? 0x0f0000 : PATCOPY
);
516 r
.top
+= thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
517 PatBlt( hdc
, r
.left
+ 1, r
.top
+ thumbSize
,
518 r
.right
- r
.left
- 2,
519 r
.bottom
- r
.top
- thumbSize
- 1,
520 bottom_selected
? 0x0f0000 : PATCOPY
);
521 r
.bottom
= r
.top
+ thumbSize
;
523 else /* horizontal */
525 PatBlt( hdc
, r
.left
+ 1, r
.top
+ 1,
526 thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
) - 1,
527 r
.bottom
- r
.top
- 2,
528 top_selected
? 0x0f0000 : PATCOPY
);
529 r
.left
+= thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
530 PatBlt( hdc
, r
.left
+ thumbSize
, r
.top
+ 1,
531 r
.right
- r
.left
- thumbSize
- 1,
532 r
.bottom
- r
.top
- 2,
533 bottom_selected
? 0x0f0000 : PATCOPY
);
534 r
.right
= r
.left
+ thumbSize
;
539 SelectObject( hdc
, GetSysColorBrush(COLOR_BTNFACE
) );
540 Rectangle( hdc
, r
.left
, r
.top
, r
.right
, r
.bottom
);
542 DrawEdge( hdc
, &r
, EDGE_RAISED
, BF_RECT
);
543 if (SCROLL_MovingThumb
&&
544 (SCROLL_TrackingWin
== hwnd
) &&
545 (SCROLL_TrackingBar
== nBar
))
547 SCROLL_DrawMovingThumb( hdc
, rect
, vertical
, arrowSize
, thumbSize
);
548 SCROLL_MovingThumb
= TRUE
;
553 /***********************************************************************
554 * SCROLL_DrawScrollBar
556 * Redraw the whole scrollbar.
558 void SCROLL_DrawScrollBar( HWND hwnd
, HDC hdc
, INT nBar
,
559 BOOL arrows
, BOOL interior
)
561 INT arrowSize
, thumbSize
, thumbPos
;
564 WND
*wndPtr
= WIN_FindWndPtr( hwnd
);
565 SCROLLBAR_INFO
*infoPtr
= SCROLL_GetPtrScrollInfo( wndPtr
, nBar
);
567 if (!wndPtr
|| !infoPtr
||
568 ((nBar
== SB_VERT
) && !(wndPtr
->dwStyle
& WS_VSCROLL
)) ||
569 ((nBar
== SB_HORZ
) && !(wndPtr
->dwStyle
& WS_HSCROLL
))) goto END
;
570 if (!WIN_IsWindowDrawable( wndPtr
, FALSE
)) goto END
;
572 vertical
= SCROLL_GetScrollBarRect( hwnd
, nBar
, &rect
,
573 &arrowSize
, &thumbSize
, &thumbPos
);
575 /* Draw the arrows */
577 if (arrows
&& arrowSize
)
579 if( vertical
== SCROLL_trackVertical
&& GetCapture() == hwnd
)
580 SCROLL_DrawArrows( hdc
, infoPtr
, &rect
, arrowSize
, vertical
,
581 (SCROLL_trackHitTest
== SCROLL_TOP_ARROW
),
582 (SCROLL_trackHitTest
== SCROLL_BOTTOM_ARROW
) );
584 SCROLL_DrawArrows( hdc
, infoPtr
, &rect
, arrowSize
, vertical
,
588 SCROLL_DrawInterior( hwnd
, hdc
, nBar
, &rect
, arrowSize
, thumbSize
,
589 thumbPos
, infoPtr
->flags
, vertical
, FALSE
, FALSE
);
591 WIN_ReleaseWndPtr(wndPtr
);
595 /***********************************************************************
596 * SCROLL_RefreshScrollBar
598 * Repaint the scroll bar interior after a SetScrollRange() or
599 * SetScrollPos() call.
601 static void SCROLL_RefreshScrollBar( HWND hwnd
, INT nBar
,
602 BOOL arrows
, BOOL interior
)
604 HDC hdc
= GetDCEx( hwnd
, 0,
605 DCX_CACHE
| ((nBar
== SB_CTL
) ? 0 : DCX_WINDOW
) );
608 SCROLL_DrawScrollBar( hwnd
, hdc
, nBar
, arrows
, interior
);
609 ReleaseDC( hwnd
, hdc
);
613 /***********************************************************************
614 * SCROLL_HandleKbdEvent
616 * Handle a keyboard event (only for SB_CTL scrollbars).
618 static void SCROLL_HandleKbdEvent( HWND hwnd
, WPARAM wParam
)
620 WND
*wndPtr
= WIN_FindWndPtr( hwnd
);
625 case VK_PRIOR
: msg
= SB_PAGEUP
; break;
626 case VK_NEXT
: msg
= SB_PAGEDOWN
; break;
627 case VK_HOME
: msg
= SB_TOP
; break;
628 case VK_END
: msg
= SB_BOTTOM
; break;
629 case VK_UP
: msg
= SB_LINEUP
; break;
630 case VK_DOWN
: msg
= SB_LINEDOWN
; break;
632 WIN_ReleaseWndPtr(wndPtr
);
635 SendMessageA( GetParent(hwnd
),
636 (wndPtr
->dwStyle
& SBS_VERT
) ? WM_VSCROLL
: WM_HSCROLL
,
638 WIN_ReleaseWndPtr(wndPtr
);
642 /***********************************************************************
643 * SCROLL_HandleScrollEvent
645 * Handle a mouse or timer event for the scrollbar.
646 * 'pt' is the location of the mouse event in client (for SB_CTL) or
647 * windows coordinates.
649 void SCROLL_HandleScrollEvent( HWND hwnd
, INT nBar
, UINT msg
, POINT pt
)
651 /* Previous mouse position for timer events */
653 /* Thumb position when tracking started. */
654 static UINT trackThumbPos
;
655 /* Position in the scroll-bar of the last button-down event. */
656 static INT lastClickPos
;
657 /* Position in the scroll-bar of the last mouse event. */
658 static INT lastMousePos
;
660 enum SCROLL_HITTEST hittest
;
661 HWND hwndOwner
, hwndCtl
;
663 INT arrowSize
, thumbSize
, thumbPos
;
667 SCROLLBAR_INFO
*infoPtr
= SCROLL_GetScrollInfo( hwnd
, nBar
);
668 if (!infoPtr
) return;
669 if ((SCROLL_trackHitTest
== SCROLL_NOWHERE
) && (msg
!= WM_LBUTTONDOWN
))
672 hdc
= GetDCEx( hwnd
, 0, DCX_CACHE
| ((nBar
== SB_CTL
) ? 0 : DCX_WINDOW
));
673 vertical
= SCROLL_GetScrollBarRect( hwnd
, nBar
, &rect
,
674 &arrowSize
, &thumbSize
, &thumbPos
);
675 hwndOwner
= (nBar
== SB_CTL
) ? GetParent(hwnd
) : hwnd
;
676 hwndCtl
= (nBar
== SB_CTL
) ? hwnd
: 0;
680 case WM_LBUTTONDOWN
: /* Initialise mouse tracking */
681 SCROLL_trackVertical
= vertical
;
682 SCROLL_trackHitTest
= hittest
= SCROLL_HitTest( hwnd
, nBar
, pt
, FALSE
);
683 lastClickPos
= vertical
? (pt
.y
- rect
.top
) : (pt
.x
- rect
.left
);
684 lastMousePos
= lastClickPos
;
685 trackThumbPos
= thumbPos
;
688 if (nBar
== SB_CTL
) SetFocus( hwnd
);
692 hittest
= SCROLL_HitTest( hwnd
, nBar
, pt
, TRUE
);
697 hittest
= SCROLL_NOWHERE
;
703 hittest
= SCROLL_HitTest( hwnd
, nBar
, pt
, FALSE
);
707 return; /* Should never happen */
710 TRACE("Event: hwnd=%04x bar=%d msg=%x pt=%ld,%ld hit=%d\n",
711 hwnd
, nBar
, msg
, pt
.x
, pt
.y
, hittest
);
713 switch(SCROLL_trackHitTest
)
715 case SCROLL_NOWHERE
: /* No tracking in progress */
718 case SCROLL_TOP_ARROW
:
719 SCROLL_DrawArrows( hdc
, infoPtr
, &rect
, arrowSize
, vertical
,
720 (hittest
== SCROLL_trackHitTest
), FALSE
);
721 if (hittest
== SCROLL_trackHitTest
)
723 if ((msg
== WM_LBUTTONDOWN
) || (msg
== WM_SYSTIMER
))
725 SendMessageA( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
726 SB_LINEUP
, hwndCtl
);
727 SetSystemTimer( hwnd
, SCROLL_TIMER
, (msg
== WM_LBUTTONDOWN
) ?
728 SCROLL_FIRST_DELAY
: SCROLL_REPEAT_DELAY
,
732 else KillSystemTimer( hwnd
, SCROLL_TIMER
);
735 case SCROLL_TOP_RECT
:
736 SCROLL_DrawInterior( hwnd
, hdc
, nBar
, &rect
, arrowSize
, thumbSize
,
737 thumbPos
, infoPtr
->flags
, vertical
,
738 (hittest
== SCROLL_trackHitTest
), FALSE
);
739 if (hittest
== SCROLL_trackHitTest
)
741 if ((msg
== WM_LBUTTONDOWN
) || (msg
== WM_SYSTIMER
))
743 SendMessageA( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
744 SB_PAGEUP
, hwndCtl
);
745 SetSystemTimer( hwnd
, SCROLL_TIMER
, (msg
== WM_LBUTTONDOWN
) ?
746 SCROLL_FIRST_DELAY
: SCROLL_REPEAT_DELAY
,
750 else KillSystemTimer( hwnd
, SCROLL_TIMER
);
754 if (msg
== WM_LBUTTONDOWN
)
756 SCROLL_TrackingWin
= hwnd
;
757 SCROLL_TrackingBar
= nBar
;
758 SCROLL_TrackingPos
= trackThumbPos
+ lastMousePos
- lastClickPos
;
759 SCROLL_DrawMovingThumb(hdc
, &rect
, vertical
, arrowSize
, thumbSize
);
761 else if (msg
== WM_LBUTTONUP
)
763 SCROLL_TrackingWin
= 0;
764 SCROLL_MovingThumb
= FALSE
;
765 SCROLL_DrawInterior( hwnd
, hdc
, nBar
, &rect
, arrowSize
, thumbSize
,
766 thumbPos
, infoPtr
->flags
, vertical
,
769 else /* WM_MOUSEMOVE */
773 if (!SCROLL_PtInRectEx( &rect
, pt
, vertical
)) pos
= lastClickPos
;
776 pt
= SCROLL_ClipPos( &rect
, pt
);
777 pos
= vertical
? (pt
.y
- rect
.top
) : (pt
.x
- rect
.left
);
779 if (pos
!= lastMousePos
)
781 SCROLL_DrawMovingThumb( hdc
, &rect
, vertical
,
782 arrowSize
, thumbSize
);
784 SCROLL_TrackingPos
= trackThumbPos
+ pos
- lastClickPos
;
785 SCROLL_TrackingVal
= SCROLL_GetThumbVal( infoPtr
, &rect
,
787 SCROLL_TrackingPos
);
788 SendMessageA( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
789 MAKEWPARAM( SB_THUMBTRACK
, SCROLL_TrackingVal
),
791 SCROLL_DrawMovingThumb( hdc
, &rect
, vertical
,
792 arrowSize
, thumbSize
);
797 case SCROLL_BOTTOM_RECT
:
798 SCROLL_DrawInterior( hwnd
, hdc
, nBar
, &rect
, arrowSize
, thumbSize
,
799 thumbPos
, infoPtr
->flags
, vertical
,
800 FALSE
, (hittest
== SCROLL_trackHitTest
) );
801 if (hittest
== SCROLL_trackHitTest
)
803 if ((msg
== WM_LBUTTONDOWN
) || (msg
== WM_SYSTIMER
))
805 SendMessageA( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
806 SB_PAGEDOWN
, hwndCtl
);
807 SetSystemTimer( hwnd
, SCROLL_TIMER
, (msg
== WM_LBUTTONDOWN
) ?
808 SCROLL_FIRST_DELAY
: SCROLL_REPEAT_DELAY
,
812 else KillSystemTimer( hwnd
, SCROLL_TIMER
);
815 case SCROLL_BOTTOM_ARROW
:
816 SCROLL_DrawArrows( hdc
, infoPtr
, &rect
, arrowSize
, vertical
,
817 FALSE
, (hittest
== SCROLL_trackHitTest
) );
818 if (hittest
== SCROLL_trackHitTest
)
820 if ((msg
== WM_LBUTTONDOWN
) || (msg
== WM_SYSTIMER
))
822 SendMessageA( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
823 SB_LINEDOWN
, hwndCtl
);
824 SetSystemTimer( hwnd
, SCROLL_TIMER
, (msg
== WM_LBUTTONDOWN
) ?
825 SCROLL_FIRST_DELAY
: SCROLL_REPEAT_DELAY
,
829 else KillSystemTimer( hwnd
, SCROLL_TIMER
);
833 if (msg
== WM_LBUTTONUP
)
835 hittest
= SCROLL_trackHitTest
;
836 SCROLL_trackHitTest
= SCROLL_NOWHERE
; /* Terminate tracking */
838 if (hittest
== SCROLL_THUMB
)
840 UINT val
= SCROLL_GetThumbVal( infoPtr
, &rect
, vertical
,
841 trackThumbPos
+ lastMousePos
- lastClickPos
);
842 SendMessageA( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
843 MAKEWPARAM( SB_THUMBPOSITION
, val
), hwndCtl
);
846 SendMessageA( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
847 SB_ENDSCROLL
, hwndCtl
);
850 ReleaseDC( hwnd
, hdc
);
854 /***********************************************************************
857 LRESULT WINAPI
ScrollBarWndProc( HWND hwnd
, UINT message
, WPARAM wParam
,
864 CREATESTRUCTA
*lpCreat
= (CREATESTRUCTA
*)lParam
;
865 if (lpCreat
->style
& SBS_SIZEBOX
)
867 FIXME("Unimplemented style SBS_SIZEBOX.\n" );
871 if (lpCreat
->style
& SBS_VERT
)
873 if (lpCreat
->style
& SBS_LEFTALIGN
)
874 MoveWindow( hwnd
, lpCreat
->x
, lpCreat
->y
,
875 GetSystemMetrics(SM_CXVSCROLL
)+1, lpCreat
->cy
, FALSE
);
876 else if (lpCreat
->style
& SBS_RIGHTALIGN
)
878 lpCreat
->x
+lpCreat
->cx
-GetSystemMetrics(SM_CXVSCROLL
)-1,
880 GetSystemMetrics(SM_CXVSCROLL
)+1, lpCreat
->cy
, FALSE
);
884 if (lpCreat
->style
& SBS_TOPALIGN
)
885 MoveWindow( hwnd
, lpCreat
->x
, lpCreat
->y
,
886 lpCreat
->cx
, GetSystemMetrics(SM_CYHSCROLL
)+1, FALSE
);
887 else if (lpCreat
->style
& SBS_BOTTOMALIGN
)
890 lpCreat
->y
+lpCreat
->cy
-GetSystemMetrics(SM_CYHSCROLL
)-1,
891 lpCreat
->cx
, GetSystemMetrics(SM_CYHSCROLL
)+1, FALSE
);
894 if (!hUpArrow
) SCROLL_LoadBitmaps();
895 TRACE("ScrollBar creation, hwnd=%04x\n", hwnd
);
904 CONV_POINT16TO32( (POINT16
*)&lParam
, &pt
);
905 SCROLL_HandleScrollEvent( hwnd
, SB_CTL
, message
, pt
);
910 SCROLL_HandleKbdEvent( hwnd
, wParam
);
917 return DLGC_WANTARROWS
; /* Windows returns this value */
922 HDC hdc
= BeginPaint( hwnd
, &ps
);
923 SCROLL_DrawScrollBar( hwnd
, hdc
, SB_CTL
, TRUE
, TRUE
);
924 EndPaint( hwnd
, &ps
);
930 return SetScrollPos( hwnd
, SB_CTL
, wParam
, (BOOL
)lParam
);
934 return GetScrollPos( hwnd
, SB_CTL
);
937 SetScrollRange( hwnd
, SB_CTL
, LOWORD(lParam
), HIWORD(lParam
),
938 wParam
/* FIXME: Is this correct? */ );
942 SetScrollRange( hwnd
, SB_CTL
, wParam
, lParam
, FALSE
);
943 return 0; /* FIXME: return previous position */
946 FIXME("don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam
, lParam
);
950 GetScrollRange( hwnd
, SB_CTL
, (LPINT
)wParam
, (LPINT
)lParam
);
953 case SBM_ENABLE_ARROWS16
:
954 case SBM_ENABLE_ARROWS
:
955 return EnableScrollBar( hwnd
, SB_CTL
, wParam
);
957 case SBM_SETRANGEREDRAW
:
958 SetScrollRange( hwnd
, SB_CTL
, wParam
, lParam
, TRUE
);
959 return 0; /* FIXME: return previous position */
961 case SBM_SETSCROLLINFO
:
962 return SetScrollInfo( hwnd
, SB_CTL
, (SCROLLINFO
*)lParam
, wParam
);
964 case SBM_GETSCROLLINFO
:
965 return GetScrollInfo( hwnd
, SB_CTL
, (SCROLLINFO
*)lParam
);
975 ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
976 message
, wParam
, lParam
);
980 if (message
>= WM_USER
)
981 WARN("unknown msg %04x wp=%04x lp=%08lx\n",
982 message
, wParam
, lParam
);
983 return DefWindowProcA( hwnd
, message
, wParam
, lParam
);
989 /*************************************************************************
990 * SetScrollInfo16 (USER.475)
992 INT16 WINAPI
SetScrollInfo16( HWND16 hwnd
, INT16 nBar
, const SCROLLINFO
*info
,
995 return (INT16
)SetScrollInfo( hwnd
, nBar
, info
, bRedraw
);
999 /*************************************************************************
1000 * SetScrollInfo32 (USER32.501)
1001 * SetScrollInfo32 can be used to set the position, upper bound,
1002 * lower bound, and page size of a scrollbar control.
1005 * Scrollbar position
1008 * For 100 lines of text to be displayed in a window of 25 lines,
1009 * one would for instance use info->nMin=0, info->nMax=75
1010 * (corresponding to the 76 different positions of the window on
1011 * the text), and info->nPage=25.
1013 INT WINAPI
SetScrollInfo(
1014 HWND hwnd
/* [I] Handle of window whose scrollbar will be affected */,
1015 INT nBar
/* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1016 const SCROLLINFO
*info
/* [I] Specifies what to change and new values */,
1017 BOOL bRedraw
/* [I] Should scrollbar be redrawn afterwards ? */)
1020 INT retVal
= SCROLL_SetScrollInfo( hwnd
, nBar
, info
, &action
);
1022 if( action
& SA_SSI_HIDE
)
1023 SCROLL_ShowScrollBar( hwnd
, nBar
, FALSE
, FALSE
);
1026 if( action
& SA_SSI_SHOW
)
1027 if( SCROLL_ShowScrollBar( hwnd
, nBar
, TRUE
, TRUE
) )
1028 return retVal
; /* SetWindowPos() already did the painting */
1030 if( bRedraw
&& (action
& SA_SSI_REFRESH
))
1031 SCROLL_RefreshScrollBar( hwnd
, nBar
, TRUE
, TRUE
);
1032 else if( action
& SA_SSI_REPAINT_ARROWS
)
1033 SCROLL_RefreshScrollBar( hwnd
, nBar
, TRUE
, FALSE
);
1038 INT
SCROLL_SetScrollInfo( HWND hwnd
, INT nBar
,
1039 const SCROLLINFO
*info
, INT
*action
)
1041 /* Update the scrollbar state and set action flags according to
1042 * what has to be done graphics wise. */
1044 SCROLLBAR_INFO
*infoPtr
;
1047 dbg_decl_str(scroll
, 256);
1051 if (!(infoPtr
= SCROLL_GetScrollInfo(hwnd
, nBar
))) return 0;
1052 if (info
->fMask
& ~(SIF_ALL
| SIF_DISABLENOSCROLL
)) return 0;
1053 if ((info
->cbSize
!= sizeof(*info
)) &&
1054 (info
->cbSize
!= sizeof(*info
)-sizeof(info
->nTrackPos
))) return 0;
1056 /* Set the page size */
1058 if (info
->fMask
& SIF_PAGE
)
1060 dsprintf(scroll
, " page=%d", info
->nPage
);
1061 if( infoPtr
->Page
!= info
->nPage
)
1063 infoPtr
->Page
= info
->nPage
;
1064 *action
|= SA_SSI_REFRESH
;
1068 /* Set the scroll pos */
1070 if (info
->fMask
& SIF_POS
)
1072 dsprintf(scroll
, " pos=%d", info
->nPos
);
1073 if( infoPtr
->CurVal
!= info
->nPos
)
1075 infoPtr
->CurVal
= info
->nPos
;
1076 *action
|= SA_SSI_REFRESH
;
1080 /* Set the scroll range */
1082 if (info
->fMask
& SIF_RANGE
)
1084 dsprintf(scroll
, " min=%d max=%d", info
->nMin
, info
->nMax
);
1086 /* Invalid range -> range is set to (0,0) */
1087 if ((info
->nMin
> info
->nMax
) ||
1088 ((UINT
)(info
->nMax
- info
->nMin
) >= 0x80000000))
1090 infoPtr
->MinVal
= 0;
1091 infoPtr
->MaxVal
= 0;
1095 if( infoPtr
->MinVal
!= info
->nMin
||
1096 infoPtr
->MaxVal
!= info
->nMax
)
1098 *action
|= SA_SSI_REFRESH
;
1099 infoPtr
->MinVal
= info
->nMin
;
1100 infoPtr
->MaxVal
= info
->nMax
;
1105 TRACE("hwnd=%04x bar=%d %s\n",
1106 hwnd
, nBar
, dbg_str(scroll
));
1108 /* Make sure the page size is valid */
1110 if (infoPtr
->Page
< 0) infoPtr
->Page
= 0;
1111 else if (infoPtr
->Page
> infoPtr
->MaxVal
- infoPtr
->MinVal
+ 1 )
1112 infoPtr
->Page
= infoPtr
->MaxVal
- infoPtr
->MinVal
+ 1;
1114 /* Make sure the pos is inside the range */
1116 if (infoPtr
->CurVal
< infoPtr
->MinVal
)
1117 infoPtr
->CurVal
= infoPtr
->MinVal
;
1118 else if (infoPtr
->CurVal
> infoPtr
->MaxVal
- MAX( infoPtr
->Page
-1, 0 ))
1119 infoPtr
->CurVal
= infoPtr
->MaxVal
- MAX( infoPtr
->Page
-1, 0 );
1121 TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1122 infoPtr
->Page
, infoPtr
->CurVal
,
1123 infoPtr
->MinVal
, infoPtr
->MaxVal
);
1125 /* Check if the scrollbar should be hidden or disabled */
1127 if (info
->fMask
& (SIF_RANGE
| SIF_PAGE
| SIF_DISABLENOSCROLL
))
1129 new_flags
= infoPtr
->flags
;
1130 if (infoPtr
->MinVal
>= infoPtr
->MaxVal
- MAX( infoPtr
->Page
-1, 0 ))
1132 /* Hide or disable scroll-bar */
1133 if (info
->fMask
& SIF_DISABLENOSCROLL
)
1135 new_flags
= ESB_DISABLE_BOTH
;
1136 *action
|= SA_SSI_REFRESH
;
1138 else if (nBar
!= SB_CTL
)
1140 *action
= SA_SSI_HIDE
;
1144 else /* Show and enable scroll-bar */
1148 *action
|= SA_SSI_SHOW
;
1151 if (infoPtr
->flags
!= new_flags
) /* check arrow flags */
1153 infoPtr
->flags
= new_flags
;
1154 *action
|= SA_SSI_REPAINT_ARROWS
;
1159 /* Return current position */
1161 return infoPtr
->CurVal
;
1165 /*************************************************************************
1166 * GetScrollInfo16 (USER.476)
1168 BOOL16 WINAPI
GetScrollInfo16( HWND16 hwnd
, INT16 nBar
, LPSCROLLINFO info
)
1170 return GetScrollInfo( hwnd
, nBar
, info
);
1174 /*************************************************************************
1175 * GetScrollInfo32 (USER32.284)
1176 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1177 * lower bound, and page size of a scrollbar control.
1181 BOOL WINAPI
GetScrollInfo(
1182 HWND hwnd
/* [I] Handle of window */ ,
1183 INT nBar
/* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1184 LPSCROLLINFO info
/* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1186 SCROLLBAR_INFO
*infoPtr
;
1188 if (!(infoPtr
= SCROLL_GetScrollInfo( hwnd
, nBar
))) return FALSE
;
1189 if (info
->fMask
& ~(SIF_ALL
| SIF_DISABLENOSCROLL
)) return FALSE
;
1190 if ((info
->cbSize
!= sizeof(*info
)) &&
1191 (info
->cbSize
!= sizeof(*info
)-sizeof(info
->nTrackPos
))) return FALSE
;
1193 if (info
->fMask
& SIF_PAGE
) info
->nPage
= infoPtr
->Page
;
1194 if (info
->fMask
& SIF_POS
) info
->nPos
= infoPtr
->CurVal
;
1195 if ((info
->fMask
& SIF_TRACKPOS
) && (info
->cbSize
== sizeof(*info
)))
1196 info
->nTrackPos
= (SCROLL_TrackingWin
==hwnd
) ? SCROLL_TrackingVal
: 0;
1197 if (info
->fMask
& SIF_RANGE
)
1199 info
->nMin
= infoPtr
->MinVal
;
1200 info
->nMax
= infoPtr
->MaxVal
;
1202 return (info
->fMask
& SIF_ALL
) != 0;
1206 /*************************************************************************
1207 * SetScrollPos16 (USER.62)
1209 INT16 WINAPI
SetScrollPos16( HWND16 hwnd
, INT16 nBar
, INT16 nPos
,
1212 return (INT16
)SetScrollPos( hwnd
, nBar
, nPos
, bRedraw
);
1216 /*************************************************************************
1217 * SetScrollPos32 (USER32.502)
1220 * Success: Scrollbar position
1224 * Note the ambiguity when 0 is returned. Use GetLastError
1225 * to make sure there was an error (and to know which one).
1227 INT WINAPI
SetScrollPos(
1228 HWND hwnd
/* [I] Handle of window whose scrollbar will be affected */,
1229 INT nBar
/* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1230 INT nPos
/* [I] New value */,
1231 BOOL bRedraw
/* [I] Should scrollbar be redrawn afterwards ? */ )
1234 SCROLLBAR_INFO
*infoPtr
;
1237 if (!(infoPtr
= SCROLL_GetScrollInfo( hwnd
, nBar
))) return 0;
1238 oldPos
= infoPtr
->CurVal
;
1239 info
.cbSize
= sizeof(info
);
1241 info
.fMask
= SIF_POS
;
1242 SetScrollInfo( hwnd
, nBar
, &info
, bRedraw
);
1247 /*************************************************************************
1248 * GetScrollPos16 (USER.63)
1250 INT16 WINAPI
GetScrollPos16( HWND16 hwnd
, INT16 nBar
)
1252 return (INT16
)GetScrollPos( hwnd
, nBar
);
1256 /*************************************************************************
1257 * GetScrollPos32 (USER32.285)
1260 * Success: Current position
1264 * Note the ambiguity when 0 is returned. Use GetLastError
1265 * to make sure there was an error (and to know which one).
1267 INT WINAPI
GetScrollPos(
1268 HWND hwnd
, /* [I] Handle of window */
1269 INT nBar
/* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1271 SCROLLBAR_INFO
*infoPtr
;
1273 if (!(infoPtr
= SCROLL_GetScrollInfo( hwnd
, nBar
))) return 0;
1274 return infoPtr
->CurVal
;
1278 /*************************************************************************
1279 * SetScrollRange16 (USER.64)
1281 void WINAPI
SetScrollRange16( HWND16 hwnd
, INT16 nBar
,
1282 INT16 MinVal
, INT16 MaxVal
, BOOL16 bRedraw
)
1284 /* Invalid range -> range is set to (0,0) */
1285 if ((INT
)MaxVal
- (INT
)MinVal
> 0x7fff) MinVal
= MaxVal
= 0;
1286 SetScrollRange( hwnd
, nBar
, MinVal
, MaxVal
, bRedraw
);
1290 /*************************************************************************
1291 * SetScrollRange32 (USER32.503)
1295 BOOL WINAPI
SetScrollRange(
1296 HWND hwnd
, /* [I] Handle of window whose scrollbar will be affected */
1297 INT nBar
, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1298 INT MinVal
, /* [I] New minimum value */
1299 INT MaxVal
, /* [I] New maximum value */
1300 BOOL bRedraw
/* [I] Should scrollbar be redrawn afterwards ? */)
1304 info
.cbSize
= sizeof(info
);
1307 info
.fMask
= SIF_RANGE
;
1308 SetScrollInfo( hwnd
, nBar
, &info
, bRedraw
);
1313 /*************************************************************************
1314 * SCROLL_SetNCSbState
1316 * Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
1318 INT
SCROLL_SetNCSbState(WND
* wndPtr
, int vMin
, int vMax
, int vPos
,
1319 int hMin
, int hMax
, int hPos
)
1322 SCROLLINFO vInfo
, hInfo
;
1324 vInfo
.cbSize
= hInfo
.cbSize
= sizeof(SCROLLINFO
);
1325 vInfo
.nMin
= vMin
; hInfo
.nMin
= hMin
;
1326 vInfo
.nMax
= vMax
; hInfo
.nMax
= hMax
;
1327 vInfo
.nPos
= vPos
; hInfo
.nPos
= hPos
;
1328 vInfo
.fMask
= hInfo
.fMask
= SIF_RANGE
| SIF_POS
;
1330 SCROLL_SetScrollInfo( wndPtr
->hwndSelf
, SB_VERT
, &vInfo
, &vA
);
1331 SCROLL_SetScrollInfo( wndPtr
->hwndSelf
, SB_HORZ
, &hInfo
, &hA
);
1333 if( !SCROLL_ShowScrollBar( wndPtr
->hwndSelf
, SB_BOTH
,
1334 (hA
& SA_SSI_SHOW
),(vA
& SA_SSI_SHOW
) ) )
1336 /* SetWindowPos() wasn't called, just redraw the scrollbars if needed */
1337 if( vA
& SA_SSI_REFRESH
)
1338 SCROLL_RefreshScrollBar( wndPtr
->hwndSelf
, SB_VERT
, FALSE
, TRUE
);
1340 if( hA
& SA_SSI_REFRESH
)
1341 SCROLL_RefreshScrollBar( wndPtr
->hwndSelf
, SB_HORZ
, FALSE
, TRUE
);
1347 /*************************************************************************
1348 * GetScrollRange16 (USER.65)
1350 BOOL16 WINAPI
GetScrollRange16( HWND16 hwnd
, INT16 nBar
,
1351 LPINT16 lpMin
, LPINT16 lpMax
)
1354 BOOL16 ret
= GetScrollRange( hwnd
, nBar
, &min
, &max
);
1355 if (lpMin
) *lpMin
= min
;
1356 if (lpMax
) *lpMax
= max
;
1361 /*************************************************************************
1362 * GetScrollRange32 (USER32.286)
1366 BOOL WINAPI
GetScrollRange(
1367 HWND hwnd
, /* [I] Handle of window */
1368 INT nBar
, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1369 LPINT lpMin
, /* [O] Where to store minimum value */
1370 LPINT lpMax
/* [O] Where to store maximum value */)
1372 SCROLLBAR_INFO
*infoPtr
;
1374 if (!(infoPtr
= SCROLL_GetScrollInfo( hwnd
, nBar
)))
1376 if (lpMin
) lpMin
= 0;
1377 if (lpMax
) lpMax
= 0;
1380 if (lpMin
) *lpMin
= infoPtr
->MinVal
;
1381 if (lpMax
) *lpMax
= infoPtr
->MaxVal
;
1386 /*************************************************************************
1387 * SCROLL_ShowScrollBar()
1389 * Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
1390 * NOTE: fShowV/fShowH must be zero when nBar is SB_HORZ/SB_VERT.
1392 BOOL
SCROLL_ShowScrollBar( HWND hwnd
, INT nBar
,
1393 BOOL fShowH
, BOOL fShowV
)
1395 WND
*wndPtr
= WIN_FindWndPtr( hwnd
);
1396 BOOL retvalue
= FALSE
;
1398 if (!wndPtr
) return FALSE
;
1399 TRACE("hwnd=%04x bar=%d horz=%d, vert=%d\n",
1400 hwnd
, nBar
, fShowH
, fShowV
);
1405 ShowWindow( hwnd
, fShowH
? SW_SHOW
: SW_HIDE
);
1413 fShowH
= !(wndPtr
->dwStyle
& WS_HSCROLL
);
1414 wndPtr
->dwStyle
|= WS_HSCROLL
;
1418 fShowH
= (wndPtr
->dwStyle
& WS_HSCROLL
);
1419 wndPtr
->dwStyle
&= ~WS_HSCROLL
;
1421 if( nBar
== SB_HORZ
) break;
1427 fShowV
= !(wndPtr
->dwStyle
& WS_VSCROLL
);
1428 wndPtr
->dwStyle
|= WS_VSCROLL
;
1432 fShowV
= (wndPtr
->dwStyle
& WS_VSCROLL
);
1433 wndPtr
->dwStyle
&= ~WS_VSCROLL
;
1438 retvalue
= FALSE
; /* Nothing to do! */
1442 if( fShowH
|| fShowV
) /* frame has been changed, let the window redraw itself */
1444 SetWindowPos( hwnd
, 0, 0, 0, 0, 0, SWP_NOSIZE
| SWP_NOMOVE
1445 | SWP_NOACTIVATE
| SWP_NOZORDER
| SWP_FRAMECHANGED
);
1450 retvalue
= FALSE
; /* no frame changes */
1452 WIN_ReleaseWndPtr(wndPtr
);
1457 /*************************************************************************
1458 * ShowScrollBar16 (USER.267)
1460 void WINAPI
ShowScrollBar16( HWND16 hwnd
, INT16 nBar
, BOOL16 fShow
)
1462 SCROLL_ShowScrollBar( hwnd
, nBar
, (nBar
== SB_VERT
) ? 0 : fShow
,
1463 (nBar
== SB_HORZ
) ? 0 : fShow
);
1467 /*************************************************************************
1468 * ShowScrollBar32 (USER32.532)
1472 BOOL WINAPI
ShowScrollBar(
1473 HWND hwnd
, /* [I] Handle of window whose scrollbar(s) will be affected */
1474 INT nBar
, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1475 BOOL fShow
/* [I] TRUE = show, FALSE = hide */)
1477 SCROLL_ShowScrollBar( hwnd
, nBar
, (nBar
== SB_VERT
) ? 0 : fShow
,
1478 (nBar
== SB_HORZ
) ? 0 : fShow
);
1483 /*************************************************************************
1484 * EnableScrollBar16 (USER.482)
1486 BOOL16 WINAPI
EnableScrollBar16( HWND16 hwnd
, INT16 nBar
, UINT16 flags
)
1488 return EnableScrollBar( hwnd
, nBar
, flags
);
1492 /*************************************************************************
1493 * EnableScrollBar32 (USER32.171)
1495 BOOL WINAPI
EnableScrollBar( HWND hwnd
, INT nBar
, UINT flags
)
1498 SCROLLBAR_INFO
*infoPtr
;
1500 TRACE("%04x %d %d\n", hwnd
, nBar
, flags
);
1502 flags
&= ESB_DISABLE_BOTH
;
1504 if (nBar
== SB_BOTH
)
1506 if (!(infoPtr
= SCROLL_GetScrollInfo( hwnd
, SB_VERT
))) return FALSE
;
1507 if (!(bFineWithMe
= (infoPtr
->flags
== flags
)) )
1509 infoPtr
->flags
= flags
;
1510 SCROLL_RefreshScrollBar( hwnd
, SB_VERT
, TRUE
, TRUE
);
1517 if (!(infoPtr
= SCROLL_GetScrollInfo( hwnd
, nBar
))) return FALSE
;
1518 if (bFineWithMe
&& infoPtr
->flags
== flags
) return FALSE
;
1519 infoPtr
->flags
= flags
;
1521 SCROLL_RefreshScrollBar( hwnd
, nBar
, TRUE
, TRUE
);