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* Copyright 1993 Martin Ayotte
* Copyright 1994, 1996 Alexandre Julliard
#include "wine/winuser16.h"
static HBITMAP hUpArrow = 0;
static HBITMAP hDnArrow = 0;
static HBITMAP hLfArrow = 0;
static HBITMAP hRgArrow = 0;
static HBITMAP hUpArrowD = 0;
static HBITMAP hDnArrowD = 0;
static HBITMAP hLfArrowD = 0;
static HBITMAP hRgArrowD = 0;
static HBITMAP hUpArrowI = 0;
static HBITMAP hDnArrowI = 0;
static HBITMAP hLfArrowI = 0;
static HBITMAP hRgArrowI = 0;
#define TOP_ARROW(flags,pressed) \
(((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
#define BOTTOM_ARROW(flags,pressed) \
(((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
#define LEFT_ARROW(flags,pressed) \
(((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
#define RIGHT_ARROW(flags,pressed) \
(((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
/* Minimum size of the rectangle between the arrows */
#define SCROLL_MIN_RECT 4
/* Overlap between arrows and thumb */
#define SCROLL_ARROW_THUMB_OVERLAP 1
/* Delay (in ms) before first repetition when holding the button down */
#define SCROLL_FIRST_DELAY 200
/* Delay (in ms) between scroll repetitions */
/* Scroll timer id */
#define SCROLL_TIMER 0
/* Scroll-bar hit testing */
enum SCROLL_HITTEST
{
SCROLL_NOWHERE, /* Outside the scroll bar */
SCROLL_TOP_ARROW, /* Top or left arrow */
SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
SCROLL_THUMB, /* Thumb rectangle */
SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
};
/* What to do after SCROLL_SetScrollInfo() */
#define SA_SSI_HIDE 0x0001
#define SA_SSI_SHOW 0x0002
#define SA_SSI_REFRESH 0x0004
#define SA_SSI_REPAINT_ARROWS 0x0008
static HWND SCROLL_TrackingWin = 0;
static INT SCROLL_TrackingBar = 0;
static INT SCROLL_TrackingPos = 0;
static INT SCROLL_TrackingVal = 0;
/* Hit test code of the last button-down event */
static enum SCROLL_HITTEST SCROLL_trackHitTest;
static BOOL SCROLL_trackVertical;
/* Is the moving thumb being displayed? */
static BOOL SCROLL_MovingThumb = FALSE;
/* Local functions */
static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
BOOL fShowH, BOOL fShowV );
static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
const SCROLLINFO *info, INT *action );
/***********************************************************************
hUpArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROW) );
hDnArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROW) );
hLfArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROW) );
hRgArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROW) );
hUpArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWD) );
hDnArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWD) );
hLfArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWD) );
hRgArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWD) );
hUpArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWI) );
hDnArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWI) );
hLfArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWI) );
hRgArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWI) );
/***********************************************************************
static SCROLLBAR_INFO *SCROLL_GetPtrScrollInfo( WND* wndPtr, INT nBar )
case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break;
case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break;
case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break;
if (!infoPtr) /* Create the info structure if needed */
if ((infoPtr = HeapAlloc( SystemHeap, 0, sizeof(SCROLLBAR_INFO) )))
infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
infoPtr->MaxVal = 100;
infoPtr->flags = ESB_ENABLE_BOTH;
if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
else wndPtr->pVScroll = infoPtr;
/***********************************************************************
* SCROLL_GetScrollInfo
*/
static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND hwnd, INT nBar )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
return SCROLL_GetPtrScrollInfo( wndPtr, nBar );
}
/***********************************************************************
* SCROLL_GetScrollBarRect
*
* Compute the scroll bar rectangle, in drawing coordinates (i.e. client
* coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
* 'arrowSize' returns the width or height of an arrow (depending on
* the orientation of the scrollbar), 'thumbSize' returns the size of
* the thumb, and 'thumbPos' returns the position of the thumb
* relative to the left or to the top.
* Return TRUE if the scrollbar is vertical, FALSE if horizontal.
*/
static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
INT *arrowSize, INT *thumbSize,
INT *thumbPos )
INT pixels;
BOOL vertical;
WND *wndPtr = WIN_FindWndPtr( hwnd );
switch(nBar)
{
case SB_HORZ:
lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left;
lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left;
lprect->bottom = lprect->top + SYSMETRICS_CYHSCROLL;
if(wndPtr->dwStyle & WS_BORDER) {
lprect->left--;
lprect->right++;
} else if(wndPtr->dwStyle & WS_VSCROLL)
lprect->right++;
vertical = FALSE;
break;
case SB_VERT:
lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top;
lprect->right = lprect->left + SYSMETRICS_CXVSCROLL;
lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
if(wndPtr->dwStyle & WS_BORDER) {
lprect->top--;
lprect->bottom++;
} else if(wndPtr->dwStyle & WS_HSCROLL)
lprect->bottom++;
GetClientRect( hwnd, lprect );
vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
break;
}
if (vertical) pixels = lprect->bottom - lprect->top;
else pixels = lprect->right - lprect->left;
if (pixels <= 2*SYSMETRICS_CXVSCROLL + SCROLL_MIN_RECT)
if (pixels > SCROLL_MIN_RECT)
*arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
else
*arrowSize = 0;
*thumbPos = *thumbSize = 0;
SCROLLBAR_INFO *info = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
pixels -= (2 * (SYSMETRICS_CXVSCROLL - SCROLL_ARROW_THUMB_OVERLAP));
if (info->Page)
{
*thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
}
else *thumbSize = SYSMETRICS_CXVSCROLL;
((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
{
/* Rectangle too small or scrollbar disabled -> no thumb */
*thumbPos = *thumbSize = 0;
}
INT max = info->MaxVal - MAX( info->Page-1, 0 );
*thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
*thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
+ pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
/***********************************************************************
* SCROLL_GetThumbVal
*
* Compute the current scroll position based on the thumb position in pixels
* from the top of the scroll-bar.
*/
static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
BOOL vertical, INT pos )
INT thumbSize;
INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
if ((pixels -= 2*(SYSMETRICS_CXVSCROLL - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
return infoPtr->MinVal;
if (infoPtr->Page)
{
thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
}
else thumbSize = SYSMETRICS_CXVSCROLL;
if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
pos = MAX( 0, pos - (SYSMETRICS_CXVSCROLL - SCROLL_ARROW_THUMB_OVERLAP) );
if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
/***********************************************************************
* SCROLL_PtInRectEx
*/
static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
RECT rect = *lpRect;
if (vertical)
{
rect.left -= lpRect->right - lpRect->left;
rect.right += lpRect->right - lpRect->left;
}
else
{
rect.top -= lpRect->bottom - lpRect->top;
rect.bottom += lpRect->bottom - lpRect->top;
}
return PtInRect( &rect, pt );
}
/***********************************************************************
* SCROLL_ClipPos
*/
static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
{
if( pt.x < lpRect->left )
pt.x = lpRect->left;
else
if( pt.x > lpRect->right )
pt.x = lpRect->right;
if( pt.y < lpRect->top )
pt.y = lpRect->top;
else
if( pt.y > lpRect->bottom )
pt.y = lpRect->bottom;
return pt;
}
/***********************************************************************
* SCROLL_HitTest
*
* Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
*/
static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
POINT pt, BOOL bDragging )
INT arrowSize, thumbSize, thumbPos;
RECT rect;
BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
(!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW;
if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
if (!thumbPos) return SCROLL_TOP_RECT;
pt.y -= rect.top;
if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW;
if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
if (!thumbPos) return SCROLL_TOP_RECT;
pt.x -= rect.left;
if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
return SCROLL_THUMB;
/***********************************************************************
* SCROLL_DrawArrows
*
* Draw the scroll bar arrows.
*/
static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
RECT *rect, INT arrowSize, BOOL vertical,
BOOL top_pressed, BOOL bottom_pressed )
HDC hdcMem = CreateCompatibleDC( hdc );
HBITMAP hbmpPrev = SelectObject( hdcMem, vertical ?
TOP_ARROW(infoPtr->flags, top_pressed)
: LEFT_ARROW(infoPtr->flags, top_pressed));
SetStretchBltMode( hdc, STRETCH_DELETESCANS );
StretchBlt( hdc, rect->left, rect->top,
vertical ? rect->right-rect->left : arrowSize,
vertical ? arrowSize : rect->bottom-rect->top,
SelectObject( hdcMem, vertical ?
BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
: RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
StretchBlt( hdc, rect->left, rect->bottom - arrowSize,
StretchBlt( hdc, rect->right - arrowSize, rect->top,
SelectObject( hdcMem, hbmpPrev );
DeleteDC( hdcMem );
/***********************************************************************
* SCROLL_DrawMovingThumb
*
* Draw the moving thumb rectangle.
*/
static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
INT arrowSize, INT thumbSize )
RECT r = *rect;
if (r.top < rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
r.top = rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
if (r.top + thumbSize >
rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
r.top = rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
- thumbSize;
r.bottom = r.top + thumbSize;
if (r.left < rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
r.left = rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
if (r.left + thumbSize >
rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
r.left = rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
- thumbSize;
r.right = r.left + thumbSize;
DrawFocusRect( hdc, &r );
/***********************************************************************
* SCROLL_DrawInterior
*
* Draw the scroll bar interior (everything except the arrows).
*/
static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
RECT *rect, INT arrowSize,
INT thumbSize, INT thumbPos,
UINT flags, BOOL vertical,
BOOL top_selected, BOOL bottom_selected )
RECT r;
SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
if ((flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
{
/* This ought to be the color of the parent window */
SelectObject( hdc, GetSysColorBrush(COLOR_WINDOW) );
{
if (nBar == SB_CTL) /* Only scrollbar controls send WM_CTLCOLOR */
{
HBRUSH hbrush = SendMessageA(GetParent(hwnd),
SelectObject( hdc, hbrush );
else SelectObject( hdc, GetSysColorBrush(COLOR_SCROLLBAR) );
/* Calculate the scroll rectangle */
r = *rect;
if (vertical)
{
r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
Rectangle( hdc, r.left, r.top, r.right, r.bottom );
/* Draw the scroll rectangles and thumb */
if (!thumbPos) /* No thumb to draw */
{
PatBlt( hdc, r.left+1, r.top+1, r.right - r.left - 2,
PatBlt( hdc, r.left + 1, r.top + 1,
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
PatBlt( hdc, r.left + 1, r.top + thumbSize,
PatBlt( hdc, r.left + 1, r.top + 1,
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
r.bottom - r.top - 2,
top_selected ? 0x0f0000 : PATCOPY );
r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
PatBlt( hdc, r.left + thumbSize, r.top + 1,
r.bottom - r.top - 2,
bottom_selected ? 0x0f0000 : PATCOPY );
SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
Rectangle( hdc, r.left, r.top, r.right, r.bottom );
r.top++, r.left++;
DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
if (SCROLL_MovingThumb &&
(SCROLL_TrackingWin == hwnd) &&
(SCROLL_TrackingBar == nBar))
{
SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
SCROLL_MovingThumb = TRUE;
}
/***********************************************************************
* SCROLL_DrawScrollBar
*
* Redraw the whole scrollbar.
*/
void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
BOOL arrows, BOOL interior )
INT arrowSize, thumbSize, thumbPos;
RECT rect;
BOOL vertical;
SCROLLBAR_INFO *infoPtr = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
if (!wndPtr || !infoPtr ||
((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) return;
if (!WIN_IsWindowDrawable( wndPtr, FALSE )) return;
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
if (arrows && arrowSize)
{
if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
(SCROLL_trackHitTest == SCROLL_TOP_ARROW),
(SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
else
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
FALSE, FALSE );
}
if( interior )
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
/***********************************************************************
* SCROLL_RefreshScrollBar
*
* Repaint the scroll bar interior after a SetScrollRange() or
* SetScrollPos() call.
*/
static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
BOOL arrows, BOOL interior )
HDC hdc = GetDCEx( hwnd, 0,
SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
ReleaseDC( hwnd, hdc );
/***********************************************************************
* SCROLL_HandleKbdEvent
*
* Handle a keyboard event (only for SB_CTL scrollbars).
static void SCROLL_HandleKbdEvent( HWND hwnd, WPARAM wParam )
WPARAM msg;
switch(wParam)
{
case VK_PRIOR: msg = SB_PAGEUP; break;
case VK_NEXT: msg = SB_PAGEDOWN; break;
case VK_HOME: msg = SB_TOP; break;
case VK_END: msg = SB_BOTTOM; break;
case VK_UP: msg = SB_LINEUP; break;
case VK_DOWN: msg = SB_LINEDOWN; break;
default:
return;
}
SendMessageA( GetParent(hwnd),
(wndPtr->dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
msg, hwnd );
/***********************************************************************
* SCROLL_HandleScrollEvent
*
* Handle a mouse or timer event for the scrollbar.
* 'pt' is the location of the mouse event in client (for SB_CTL) or
* windows coordinates.
void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt)
static POINT prevPt;
static UINT trackThumbPos;
/* Position in the scroll-bar of the last button-down event. */
static INT lastClickPos;
/* Position in the scroll-bar of the last mouse event. */
static INT lastMousePos;
HWND hwndOwner, hwndCtl;
BOOL vertical;
INT arrowSize, thumbSize, thumbPos;
RECT rect;
HDC hdc;
SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
return;
hdc = GetDCEx( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
hwndOwner = (nBar == SB_CTL) ? GetParent(hwnd) : hwnd;
hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
switch(msg)
{
case WM_LBUTTONDOWN: /* Initialise mouse tracking */
SCROLL_trackVertical = vertical;
SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
lastMousePos = lastClickPos;
trackThumbPos = thumbPos;
prevPt = pt;
SetCapture( hwnd );
if (nBar == SB_CTL) SetFocus( hwnd );
hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
prevPt = pt;
break;
case WM_LBUTTONUP:
hittest = SCROLL_NOWHERE;
ReleaseCapture();
break;
case WM_SYSTIMER:
pt = prevPt;
hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
break;
default:
return; /* Should never happen */
}
TRACE(scroll, "Event: hwnd=%04x bar=%d msg=%x pt=%ld,%ld hit=%d\n",
switch(SCROLL_trackHitTest)
{
case SCROLL_NOWHERE: /* No tracking in progress */
break;
case SCROLL_TOP_ARROW:
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
(hittest == SCROLL_trackHitTest), FALSE );
if (hittest == SCROLL_trackHitTest)
{
if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
(TIMERPROC)0 );
else KillSystemTimer( hwnd, SCROLL_TIMER );
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
thumbPos, infoPtr->flags, vertical,
(hittest == SCROLL_trackHitTest), FALSE );
if (hittest == SCROLL_trackHitTest)
{
if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
(TIMERPROC)0 );
else KillSystemTimer( hwnd, SCROLL_TIMER );
break;
case SCROLL_THUMB:
if (msg == WM_LBUTTONDOWN)
SCROLL_TrackingWin = hwnd;
SCROLL_TrackingBar = nBar;
SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
SCROLL_TrackingWin = 0;
SCROLL_MovingThumb = FALSE;
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
thumbPos, infoPtr->flags, vertical,
FALSE, FALSE );
UINT pos;
if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
else
{
pt = SCROLL_ClipPos( &rect, pt );
pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
}
SCROLL_DrawMovingThumb( hdc, &rect, vertical,
arrowSize, thumbSize );
SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
vertical,
SCROLL_TrackingPos );
SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
hwndCtl );
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
thumbPos, infoPtr->flags, vertical,
FALSE, (hittest == SCROLL_trackHitTest) );
if (hittest == SCROLL_trackHitTest)
{
if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
(TIMERPROC)0 );
else KillSystemTimer( hwnd, SCROLL_TIMER );
break;
case SCROLL_BOTTOM_ARROW:
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
FALSE, (hittest == SCROLL_trackHitTest) );
if (hittest == SCROLL_trackHitTest)
{
if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
(TIMERPROC)0 );
else KillSystemTimer( hwnd, SCROLL_TIMER );
hittest = SCROLL_trackHitTest;
SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
if (hittest == SCROLL_THUMB)
UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
ReleaseDC( hwnd, hdc );
/***********************************************************************
* ScrollBarWndProc
*/
LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam,
CREATESTRUCTA *lpCreat = (CREATESTRUCTA *)lParam;
FIXME(scroll, "Unimplemented style SBS_SIZEBOX.\n" );
return 0;
}
if (lpCreat->style & SBS_VERT)
{
if (lpCreat->style & SBS_LEFTALIGN)
MoveWindow( hwnd, lpCreat->x, lpCreat->y,
MoveWindow( hwnd,
lpCreat->x+lpCreat->cx-SYSMETRICS_CXVSCROLL-1,
lpCreat->y,
SYSMETRICS_CXVSCROLL+1, lpCreat->cy, FALSE );
}
else /* SBS_HORZ */
{
if (lpCreat->style & SBS_TOPALIGN)
MoveWindow( hwnd, lpCreat->x, lpCreat->y,
MoveWindow( hwnd,
lpCreat->x,
lpCreat->y+lpCreat->cy-SYSMETRICS_CYHSCROLL-1,
lpCreat->cx, SYSMETRICS_CYHSCROLL+1, FALSE );
TRACE(scroll, "ScrollBar creation, hwnd=%04x\n", hwnd );
return 0;
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MOUSEMOVE:
case WM_SYSTIMER:
POINT pt;
CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
}
break;
case WM_KEYDOWN:
SCROLL_HandleKbdEvent( hwnd, wParam );
break;
case WM_ERASEBKGND:
return 1;
case WM_GETDLGCODE:
return DLGC_WANTARROWS; /* Windows returns this value */
PAINTSTRUCT ps;
HDC hdc = BeginPaint( hwnd, &ps );
SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
EndPaint( hwnd, &ps );
case SBM_SETPOS:
return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
case SBM_GETPOS:
return GetScrollPos( hwnd, SB_CTL );
SetScrollRange( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam),
case SBM_SETRANGE:
SetScrollRange( hwnd, SB_CTL, wParam, lParam, FALSE );
FIXME(scroll, "don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam, lParam );
case SBM_GETRANGE:
GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
case SBM_ENABLE_ARROWS:
return EnableScrollBar( hwnd, SB_CTL, wParam );
case SBM_SETRANGEREDRAW:
SetScrollRange( hwnd, SB_CTL, wParam, lParam, TRUE );
case SBM_SETSCROLLINFO:
return SetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
case SBM_GETSCROLLINFO:
return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
case 0x00e5:
case 0x00e7:
case 0x00e8:
case 0x00eb:
case 0x00ec:
case 0x00ed:
case 0x00ee:
case 0x00ef:
ERR(scroll, "unknown Win32 msg %04x wp=%08x lp=%08lx\n",
message, wParam, lParam );
WARN(scroll, "unknown msg %04x wp=%04x lp=%08lx\n",
message, wParam, lParam );
return DefWindowProcA( hwnd, message, wParam, lParam );
/*************************************************************************
INT16 WINAPI SetScrollInfo16( HWND16 hwnd, INT16 nBar, const SCROLLINFO *info,
BOOL16 bRedraw )
return (INT16)SetScrollInfo( hwnd, nBar, info, bRedraw );
}
/*************************************************************************
* SetScrollInfo32 can be used to set the position, upper bound,
* lower bound, and page size of a scrollbar control.
*
* RETURNS
* Scrollbar position
*
* NOTE
* For 100 lines of text to be displayed in a window of 25 lines,
* one would for instance use info->nMin=0, info->nMax=75
* (corresponding to the 76 different positions of the window on