Newer
Older
* Copyright 1993 Martin Ayotte
* Copyright 1994, 1996 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "wine/winuser16.h"
#include "controls.h"
#include "wine/debug.h"
#include "user.h"
#include "message.h"
WINE_DEFAULT_DEBUG_CHANNEL(scroll);
typedef struct
{
INT curVal; /* Current scroll-bar value */
INT minVal; /* Minimum scroll-bar value */
INT maxVal; /* Maximum scroll-bar value */
INT page; /* Page size of scroll bar (Win32) */
UINT flags; /* EnableScrollBar flags */
} SCROLLBAR_INFO, *LPSCROLLBAR_INFO;
static HBITMAP hUpArrow;
static HBITMAP hDnArrow;
static HBITMAP hLfArrow;
static HBITMAP hRgArrow;
static HBITMAP hUpArrowD;
static HBITMAP hDnArrowD;
static HBITMAP hLfArrowD;
static HBITMAP hRgArrowD;
static HBITMAP hUpArrowI;
static HBITMAP hDnArrowI;
static HBITMAP hLfArrowI;
static HBITMAP hRgArrowI;
#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
#define SCROLL_ARROW_THUMB_OVERLAP ((TWEAK_WineLook == WIN31_LOOK) ? 1 : 0)
/* 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 );
static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
RECT *rect, INT arrowSize,
INT thumbSize, INT thumbPos,
UINT flags, BOOL vertical,
BOOL top_selected, BOOL bottom_selected );
static LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
/*********************************************************************
* scrollbar class descriptor
*/
const struct builtin_class_descr SCROLL_builtin_class =
{
"ScrollBar", /* name */
CS_GLOBALCLASS | CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */
NULL, /* procA (winproc is Unicode only) */
ScrollBarWndProc, /* procW */
sizeof(SCROLLBAR_INFO), /* extra */
IDC_ARROW, /* cursor */
0 /* brush */
};
/***********************************************************************
* SCROLL_ScrollInfoValid
*
* Determine if the supplied SCROLLINFO struct is valid.
*/
inline static BOOL SCROLL_ScrollInfoValid(
LPSCROLLINFO info /* [in] The SCROLLINFO struct to be tested */)
{
return !(info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)
|| (info->cbSize != sizeof(*info)
&& info->cbSize != sizeof(*info) - sizeof(info->nTrackPos)));
}
/***********************************************************************
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) );
/***********************************************************************
* SCROLL_GetScrollBarInfo
static SCROLLBAR_INFO *SCROLL_GetScrollBarInfo( HWND hwnd, INT nBar )
WND *wndPtr = WIN_FindWndPtr( hwnd );
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;
default:
WIN_ReleaseWndPtr( wndPtr );
return NULL;
if (!infoPtr) /* Create the info structure if needed */
if ((infoPtr = HeapAlloc( GetProcessHeap(), 0, sizeof(SCROLLBAR_INFO) )))
infoPtr->minVal = infoPtr->curVal = infoPtr->page = 0;
infoPtr->maxVal = 100;
if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
else wndPtr->pVScroll = infoPtr;
WIN_ReleaseWndPtr( wndPtr );
/***********************************************************************
* 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 + GetSystemMetrics(SM_CYHSCROLL);
if(wndPtr->dwStyle & WS_BORDER) {
lprect->left--;
lprect->right++;
} else if(wndPtr->dwStyle & WS_VSCROLL)
lprect->right++;
if((wndPtr->dwExStyle & WS_EX_LEFTSCROLLBAR) != 0)
lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left - GetSystemMetrics(SM_CXVSCROLL);
else
lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top;
lprect->right = lprect->left + GetSystemMetrics(SM_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;
WIN_ReleaseWndPtr(wndPtr);
}
if (vertical) pixels = lprect->bottom - lprect->top;
else pixels = lprect->right - lprect->left;
if (pixels <= 2*GetSystemMetrics(SM_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_GetScrollBarInfo( hwnd, nBar );
*arrowSize = GetSystemMetrics(SM_CXVSCROLL);
pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
*thumbSize = MulDiv(pixels,info->page,(info->maxVal-info->minVal+1));
if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
}
else *thumbSize = GetSystemMetrics(SM_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 );
if (info->minVal >= max)
*thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
+ MulDiv(pixels, (info->curVal-info->minVal),(max - info->minVal));
WIN_ReleaseWndPtr(wndPtr);
/***********************************************************************
* 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*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
return infoPtr->minVal;
if (infoPtr->page)
thumbSize = MulDiv(pixels,infoPtr->page,(infoPtr->maxVal-infoPtr->minVal+1));
if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
}
else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
if ((pixels -= thumbSize) <= 0) return infoPtr->minVal;
pos = max( 0, pos - (GetSystemMetrics(SM_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.
*/
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
static void SCROLL_DrawArrows_9x( HDC hdc, SCROLLBAR_INFO *infoPtr,
RECT *rect, INT arrowSize, BOOL vertical,
BOOL top_pressed, BOOL bottom_pressed )
{
RECT r;
r = *rect;
if( vertical )
r.bottom = r.top + arrowSize;
else
r.right = r.left + arrowSize;
DrawFrameControl( hdc, &r, DFC_SCROLL,
(vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT)
| (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
| (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) );
r = *rect;
if( vertical )
r.top = r.bottom-arrowSize;
else
r.left = r.right-arrowSize;
DrawFrameControl( hdc, &r, DFC_SCROLL,
(vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT)
| (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
| (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) );
}
static void SCROLL_DrawArrows_31( 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,
GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
SelectObject( hdcMem, vertical ?
BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
: RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
StretchBlt( hdc, rect->left, rect->bottom - arrowSize,
rect->right - rect->left, arrowSize,
GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
StretchBlt( hdc, rect->right - arrowSize, rect->top,
arrowSize, rect->bottom - rect->top,
GetSystemMetrics(SM_CXVSCROLL), GetSystemMetrics(SM_CYHSCROLL),
SelectObject( hdcMem, hbmpPrev );
DeleteDC( hdcMem );
static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
RECT *rect, INT arrowSize, BOOL vertical,
BOOL top_pressed, BOOL bottom_pressed )
{
if( TWEAK_WineLook == WIN31_LOOK )
SCROLL_DrawArrows_31( hdc, infoPtr, rect, arrowSize,
vertical, top_pressed,bottom_pressed );
else
SCROLL_DrawArrows_9x( hdc, infoPtr, rect, arrowSize,
vertical, top_pressed,bottom_pressed );
}
/***********************************************************************
* SCROLL_DrawMovingThumb
*
* Draw the moving thumb rectangle.
*/
static void SCROLL_DrawMovingThumb_31( 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)
DrawFocusRect( hdc, &r );
static void SCROLL_DrawMovingThumb_9x( HDC hdc, RECT *rect, BOOL vertical,
INT arrowSize, INT thumbSize )
{
INT pos = SCROLL_TrackingPos;
INT max_size;
if( vertical )
max_size = rect->bottom - rect->top;
else
max_size = rect->right - rect->left;
max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize;
if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) )
pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP);
else if( pos > max_size )
pos = max_size;
SCROLL_DrawInterior_9x( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar,
rect, arrowSize, thumbSize, pos,
0, vertical, FALSE, FALSE );
SCROLL_MovingThumb = !SCROLL_MovingThumb;
}
static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
INT arrowSize, INT thumbSize )
{
if( TWEAK_WineLook == WIN31_LOOK )
SCROLL_DrawMovingThumb_31( hdc, rect, vertical, arrowSize, thumbSize );
else
SCROLL_DrawMovingThumb_9x( hdc, rect, vertical, arrowSize, thumbSize );
}
/***********************************************************************
* SCROLL_DrawInterior
*
* Draw the scroll bar interior (everything except the arrows).
*/
static void SCROLL_DrawInterior_9x( 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;
HPEN hSavePen;
HBRUSH hSaveBrush,hBrush;
/* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
* The window-owned scrollbars need to call DEFWND_ControlColor
* to correctly setup default scrollbar colors
*/
if (nBar == SB_CTL)
hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
(WPARAM)hdc,(LPARAM)hwnd);
}
else
{
hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
}
hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) );
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
hSaveBrush = SelectObject( hdc, hBrush );
/* Calculate the scroll rectangle */
r = *rect;
if (vertical)
{
r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
}
else
{
r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
}
/* Draw the scroll rectangles and thumb */
if (!thumbPos) /* No thumb to draw */
{
PatBlt( hdc, r.left, r.top,
r.right - r.left, r.bottom - r.top,
PATCOPY );
/* cleanup and return */
SelectObject( hdc, hSavePen );
SelectObject( hdc, hSaveBrush );
return;
}
if (vertical)
{
PatBlt( hdc, r.left, r.top,
r.right - r.left,
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
top_selected ? 0x0f0000 : PATCOPY );
r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
PatBlt( hdc, r.left, r.top + thumbSize,
r.right - r.left,
r.bottom - r.top - thumbSize,
bottom_selected ? 0x0f0000 : PATCOPY );
r.bottom = r.top + thumbSize;
}
else /* horizontal */
{
PatBlt( hdc, r.left, r.top,
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
r.bottom - r.top,
top_selected ? 0x0f0000 : PATCOPY );
r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
PatBlt( hdc, r.left + thumbSize, r.top,
r.right - r.left - thumbSize,
r.bottom - r.top,
bottom_selected ? 0x0f0000 : PATCOPY );
r.right = r.left + thumbSize;
}
/* Draw the thumb */
DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT | BF_MIDDLE );
/* cleanup */
SelectObject( hdc, hSavePen );
SelectObject( hdc, hSaveBrush );
}
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;
HPEN hSavePen;
HBRUSH hSaveBrush,hBrush;
BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
if (Save_SCROLL_MovingThumb &&
(SCROLL_TrackingWin == hwnd) &&
(SCROLL_TrackingBar == nBar))
SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
if (TWEAK_WineLook == WIN31_LOOK && (flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
/* This ought to be the color of the parent window */
hBrush = GetSysColorBrush(COLOR_WINDOW);
/* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
* The window-owned scrollbars need to call DEFWND_ControlColor
* to correctly setup default scrollbar colors
*/
hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
(WPARAM)hdc,(LPARAM)hwnd);
} else {
hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) );
hSaveBrush = SelectObject( hdc, hBrush );
/* 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);
/* Only draw outline if Win 3.1. Mar 24, 1999 - Ronald B. Cemer */
if (TWEAK_WineLook == WIN31_LOOK)
Rectangle( hdc, r.left, r.top, r.right, r.bottom );
/* Draw the scroll rectangles and thumb */
if (!thumbPos) /* No thumb to draw */
{
INT offset = (TWEAK_WineLook > WIN31_LOOK) ? 0 : 1;
PatBlt( hdc, r.left+offset, r.top+offset,
r.right - r.left - 2*offset, r.bottom - r.top - 2*offset,
PATCOPY );
/* cleanup and return */
SelectObject( hdc, hSavePen );
SelectObject( hdc, hSaveBrush );
INT offset = (TWEAK_WineLook == WIN31_LOOK) ? 1 : 0;
PatBlt( hdc, r.left + offset, r.top + offset,
r.right - r.left - offset*2,
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - offset,
r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
PatBlt( hdc, r.left + offset, r.top + thumbSize,
r.right - r.left - offset*2,
r.bottom - r.top - thumbSize - offset,
INT offset = (TWEAK_WineLook == WIN31_LOOK) ? 1 : 0;
PatBlt( hdc, r.left + offset, r.top + offset,
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
r.bottom - r.top - offset*2,
r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
PatBlt( hdc, r.left + thumbSize, r.top + offset,
r.right - r.left - thumbSize - offset,
r.bottom - r.top - offset*2,
SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
if (TWEAK_WineLook == WIN31_LOOK)
{
Rectangle( hdc, r.left, r.top, r.right, r.bottom );
r.top++, r.left++;
}
else
{
Rectangle( hdc, r.left+1, r.top+1, r.right-1, r.bottom-1 );
DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
if (Save_SCROLL_MovingThumb &&
(SCROLL_TrackingWin == hwnd) &&
(SCROLL_TrackingBar == nBar))
SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
/* cleanup */
SelectObject( hdc, hSavePen );
SelectObject( hdc, hSaveBrush );
/***********************************************************************
* 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_GetScrollBarInfo( hwnd, nBar );
BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
if (!wndPtr || !infoPtr ||
((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) goto END;
if (!WIN_IsWindowDrawable( hwnd, FALSE )) goto END;
hwnd = wndPtr->hwndSelf; /* make it a full handle */
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
/* do not draw if the scrollbar rectangle is empty */
if(IsRectEmpty(&rect))
goto END;
if (Save_SCROLL_MovingThumb &&
(SCROLL_TrackingWin == hwnd) &&
(SCROLL_TrackingBar == nBar))
SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
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,
if (Save_SCROLL_MovingThumb &&
(SCROLL_TrackingWin == hwnd) &&
(SCROLL_TrackingBar == nBar))
SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
if(hwnd==GetFocus() && (nBar==SB_CTL))
{
if (!vertical)
{
SetCaretPos(thumbPos+1, rect.top+1);
}
else
{
SetCaretPos(rect.top+1, thumbPos+1);
}
}
END:
WIN_ReleaseWndPtr(wndPtr);
/***********************************************************************
* 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 with focus).
static void SCROLL_HandleKbdEvent(
HWND hwnd /* [in] Handle of window with scrollbar(s) */,
WPARAM wParam /* [in] Variable input including enable state */,
LPARAM lParam /* [in] Variable input including input point */)
TRACE("hwnd=%p wParam=%d lParam=%ld\n", hwnd, wParam, lParam);
/* hide caret on first KEYDOWN to prevent flicker */
if ((lParam & PFD_DOUBLEBUFFER_DONTCARE) == 0)
HideCaret(hwnd);
case VK_PRIOR: wParam = SB_PAGEUP; break;
case VK_NEXT: wParam = SB_PAGEDOWN; break;
case VK_HOME: wParam = SB_TOP; break;
case VK_END: wParam = SB_BOTTOM; break;
case VK_UP: wParam = SB_LINEUP; break;
case VK_DOWN: wParam = SB_LINEDOWN; break;
default: return;
SendMessageW(GetParent(hwnd),
((GetWindowLongA( hwnd, GWL_STYLE ) & SBS_VERT) ?
WM_VSCROLL : WM_HSCROLL), wParam, (LPARAM)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.
static 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_GetScrollBarInfo( 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 */
HideCaret(hwnd); /* hide caret while holding down LBUTTON */
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;
if (nBar == SB_CTL && (GetWindowLongA(hwnd, GWL_STYLE) & WS_TABSTOP)) SetFocus( hwnd );
SetCapture( hwnd );
hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
prevPt = pt;
break;
case WM_LBUTTONUP:
hittest = SCROLL_NOWHERE;
ReleaseCapture();
/* if scrollbar has focus, show back caret */
if (hwnd==GetFocus()) ShowCaret(hwnd);
hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
break;
default:
return; /* Should never happen */
}