1507 lines
48 KiB
C
1507 lines
48 KiB
C
/*
|
|
* Scrollbar control
|
|
*
|
|
* Copyright 1993 Martin Ayotte
|
|
* Copyright 1994, 1996 Alexandre Julliard
|
|
*/
|
|
|
|
#include "windows.h"
|
|
#include "sysmetrics.h"
|
|
#include "scroll.h"
|
|
#include "heap.h"
|
|
#include "win.h"
|
|
#include "debug.h"
|
|
|
|
|
|
static HBITMAP32 hUpArrow = 0;
|
|
static HBITMAP32 hDnArrow = 0;
|
|
static HBITMAP32 hLfArrow = 0;
|
|
static HBITMAP32 hRgArrow = 0;
|
|
static HBITMAP32 hUpArrowD = 0;
|
|
static HBITMAP32 hDnArrowD = 0;
|
|
static HBITMAP32 hLfArrowD = 0;
|
|
static HBITMAP32 hRgArrowD = 0;
|
|
static HBITMAP32 hUpArrowI = 0;
|
|
static HBITMAP32 hDnArrowI = 0;
|
|
static HBITMAP32 hLfArrowI = 0;
|
|
static HBITMAP32 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
|
|
|
|
/* Minimum size of the thumb in pixels */
|
|
#define SCROLL_MIN_THUMB 6
|
|
|
|
/* 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 */
|
|
#define SCROLL_REPEAT_DELAY 50
|
|
|
|
/* 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
|
|
|
|
/* Thumb-tracking info */
|
|
static HWND32 SCROLL_TrackingWin = 0;
|
|
static INT32 SCROLL_TrackingBar = 0;
|
|
static INT32 SCROLL_TrackingPos = 0;
|
|
static INT32 SCROLL_TrackingVal = 0;
|
|
/* Hit test code of the last button-down event */
|
|
static enum SCROLL_HITTEST SCROLL_trackHitTest;
|
|
static BOOL32 SCROLL_trackVertical;
|
|
|
|
/* Is the moving thumb being displayed? */
|
|
static BOOL32 SCROLL_MovingThumb = FALSE;
|
|
|
|
/* Local functions */
|
|
static BOOL32 SCROLL_ShowScrollBar( HWND32 hwnd, INT32 nBar,
|
|
BOOL32 fShowH, BOOL32 fShowV );
|
|
static INT32 SCROLL_SetScrollInfo( HWND32 hwnd, INT32 nBar,
|
|
const SCROLLINFO *info, INT32 *action );
|
|
|
|
/***********************************************************************
|
|
* SCROLL_LoadBitmaps
|
|
*/
|
|
static void SCROLL_LoadBitmaps(void)
|
|
{
|
|
hUpArrow = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_UPARROW) );
|
|
hDnArrow = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_DNARROW) );
|
|
hLfArrow = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_LFARROW) );
|
|
hRgArrow = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_RGARROW) );
|
|
hUpArrowD = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_UPARROWD) );
|
|
hDnArrowD = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_DNARROWD) );
|
|
hLfArrowD = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_LFARROWD) );
|
|
hRgArrowD = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_RGARROWD) );
|
|
hUpArrowI = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_UPARROWI) );
|
|
hDnArrowI = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_DNARROWI) );
|
|
hLfArrowI = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_LFARROWI) );
|
|
hRgArrowI = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_RGARROWI) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_GetPtrScrollInfo
|
|
*/
|
|
static SCROLLBAR_INFO *SCROLL_GetPtrScrollInfo( WND* wndPtr, INT32 nBar )
|
|
{
|
|
SCROLLBAR_INFO *infoPtr;
|
|
|
|
if (!wndPtr) return NULL;
|
|
switch(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;
|
|
default: return NULL;
|
|
}
|
|
|
|
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;
|
|
}
|
|
if (!hUpArrow) SCROLL_LoadBitmaps();
|
|
}
|
|
return infoPtr;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_GetScrollInfo
|
|
*/
|
|
static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND32 hwnd, INT32 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 BOOL32 SCROLL_GetScrollBarRect( HWND32 hwnd, INT32 nBar, RECT32 *lprect,
|
|
INT32 *arrowSize, INT32 *thumbSize,
|
|
INT32 *thumbPos )
|
|
{
|
|
INT32 pixels;
|
|
BOOL32 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++;
|
|
vertical = TRUE;
|
|
break;
|
|
|
|
case SB_CTL:
|
|
GetClientRect32( hwnd, lprect );
|
|
vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
|
|
break;
|
|
|
|
default:
|
|
return FALSE;
|
|
}
|
|
|
|
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;
|
|
}
|
|
else
|
|
{
|
|
SCROLLBAR_INFO *info = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
|
|
|
|
*arrowSize = SYSMETRICS_CXVSCROLL;
|
|
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;
|
|
|
|
if (((pixels -= *thumbSize ) < 0) ||
|
|
((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
|
|
{
|
|
/* Rectangle too small or scrollbar disabled -> no thumb */
|
|
*thumbPos = *thumbSize = 0;
|
|
}
|
|
else
|
|
{
|
|
INT32 max = info->MaxVal - MAX( info->Page-1, 0 );
|
|
if (info->MinVal >= max)
|
|
*thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
|
|
else
|
|
*thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
|
|
+ pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
|
|
}
|
|
}
|
|
return vertical;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_GetThumbVal
|
|
*
|
|
* Compute the current scroll position based on the thumb position in pixels
|
|
* from the top of the scroll-bar.
|
|
*/
|
|
static UINT32 SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT32 *rect,
|
|
BOOL32 vertical, INT32 pos )
|
|
{
|
|
INT32 thumbSize;
|
|
INT32 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 (pos > pixels) pos = pixels;
|
|
|
|
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 BOOL32 SCROLL_PtInRectEx( LPRECT32 lpRect, POINT32 pt, BOOL32 vertical )
|
|
{
|
|
RECT32 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 PtInRect32( &rect, pt );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SCROLL_ClipPos
|
|
*/
|
|
static POINT32 SCROLL_ClipPos( LPRECT32 lpRect, POINT32 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( HWND32 hwnd, INT32 nBar,
|
|
POINT32 pt, BOOL32 bDragging )
|
|
{
|
|
INT32 arrowSize, thumbSize, thumbPos;
|
|
RECT32 rect;
|
|
|
|
BOOL32 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
|
|
&arrowSize, &thumbSize, &thumbPos );
|
|
|
|
if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
|
|
(!PtInRect32( &rect, pt )) ) return SCROLL_NOWHERE;
|
|
|
|
if (vertical)
|
|
{
|
|
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) return SCROLL_TOP_RECT;
|
|
if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
|
|
}
|
|
else /* horizontal */
|
|
{
|
|
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) return SCROLL_TOP_RECT;
|
|
if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
|
|
}
|
|
return SCROLL_THUMB;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_DrawArrows
|
|
*
|
|
* Draw the scroll bar arrows.
|
|
*/
|
|
static void SCROLL_DrawArrows( HDC32 hdc, SCROLLBAR_INFO *infoPtr,
|
|
RECT32 *rect, INT32 arrowSize, BOOL32 vertical,
|
|
BOOL32 top_pressed, BOOL32 bottom_pressed )
|
|
{
|
|
HDC32 hdcMem = CreateCompatibleDC32( hdc );
|
|
HBITMAP32 hbmpPrev = SelectObject32( hdcMem, vertical ?
|
|
TOP_ARROW(infoPtr->flags, top_pressed)
|
|
: LEFT_ARROW(infoPtr->flags, top_pressed));
|
|
|
|
SetStretchBltMode32( hdc, STRETCH_DELETESCANS );
|
|
StretchBlt32( hdc, rect->left, rect->top,
|
|
vertical ? rect->right-rect->left : arrowSize,
|
|
vertical ? arrowSize : rect->bottom-rect->top,
|
|
hdcMem, 0, 0,
|
|
SYSMETRICS_CXVSCROLL, SYSMETRICS_CYHSCROLL,
|
|
SRCCOPY );
|
|
|
|
SelectObject32( hdcMem, vertical ?
|
|
BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
|
|
: RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
|
|
if (vertical)
|
|
StretchBlt32( hdc, rect->left, rect->bottom - arrowSize,
|
|
rect->right - rect->left, arrowSize,
|
|
hdcMem, 0, 0,
|
|
SYSMETRICS_CXVSCROLL, SYSMETRICS_CYHSCROLL,
|
|
SRCCOPY );
|
|
else
|
|
StretchBlt32( hdc, rect->right - arrowSize, rect->top,
|
|
arrowSize, rect->bottom - rect->top,
|
|
hdcMem, 0, 0,
|
|
SYSMETRICS_CXVSCROLL, SYSMETRICS_CYHSCROLL,
|
|
SRCCOPY );
|
|
SelectObject32( hdcMem, hbmpPrev );
|
|
DeleteDC32( hdcMem );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_DrawMovingThumb
|
|
*
|
|
* Draw the moving thumb rectangle.
|
|
*/
|
|
static void SCROLL_DrawMovingThumb( HDC32 hdc, RECT32 *rect, BOOL32 vertical,
|
|
INT32 arrowSize, INT32 thumbSize )
|
|
{
|
|
RECT32 r = *rect;
|
|
if (vertical)
|
|
{
|
|
r.top += SCROLL_TrackingPos;
|
|
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;
|
|
}
|
|
else
|
|
{
|
|
r.left += SCROLL_TrackingPos;
|
|
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;
|
|
}
|
|
DrawFocusRect32( hdc, &r );
|
|
SCROLL_MovingThumb = !SCROLL_MovingThumb;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_DrawInterior
|
|
*
|
|
* Draw the scroll bar interior (everything except the arrows).
|
|
*/
|
|
static void SCROLL_DrawInterior( HWND32 hwnd, HDC32 hdc, INT32 nBar,
|
|
RECT32 *rect, INT32 arrowSize,
|
|
INT32 thumbSize, INT32 thumbPos,
|
|
UINT32 flags, BOOL32 vertical,
|
|
BOOL32 top_selected, BOOL32 bottom_selected )
|
|
{
|
|
RECT32 r;
|
|
|
|
/* Select the correct brush and pen */
|
|
|
|
SelectObject32( hdc, GetSysColorPen32(COLOR_WINDOWFRAME) );
|
|
if ((flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
|
|
{
|
|
/* This ought to be the color of the parent window */
|
|
SelectObject32( hdc, GetSysColorBrush32(COLOR_WINDOW) );
|
|
}
|
|
else
|
|
{
|
|
if (nBar == SB_CTL) /* Only scrollbar controls send WM_CTLCOLOR */
|
|
{
|
|
HBRUSH32 hbrush = SendMessage32A(GetParent32(hwnd),
|
|
WM_CTLCOLORSCROLLBAR, hdc, hwnd );
|
|
SelectObject32( hdc, hbrush );
|
|
}
|
|
else SelectObject32( hdc, GetSysColorBrush32(COLOR_SCROLLBAR) );
|
|
}
|
|
|
|
/* 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 bar frame */
|
|
|
|
Rectangle32( hdc, r.left, r.top, r.right, r.bottom );
|
|
|
|
/* Draw the scroll rectangles and thumb */
|
|
|
|
if (!thumbPos) /* No thumb to draw */
|
|
{
|
|
PatBlt32( hdc, r.left+1, r.top+1, r.right - r.left - 2,
|
|
r.bottom - r.top - 2, PATCOPY );
|
|
return;
|
|
}
|
|
|
|
if (vertical)
|
|
{
|
|
PatBlt32( hdc, r.left + 1, r.top + 1,
|
|
r.right - r.left - 2,
|
|
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
|
|
top_selected ? 0x0f0000 : PATCOPY );
|
|
r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
PatBlt32( hdc, r.left + 1, r.top + thumbSize,
|
|
r.right - r.left - 2,
|
|
r.bottom - r.top - thumbSize - 1,
|
|
bottom_selected ? 0x0f0000 : PATCOPY );
|
|
r.bottom = r.top + thumbSize;
|
|
}
|
|
else /* horizontal */
|
|
{
|
|
PatBlt32( 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);
|
|
PatBlt32( hdc, r.left + thumbSize, r.top + 1,
|
|
r.right - r.left - thumbSize - 1,
|
|
r.bottom - r.top - 2,
|
|
bottom_selected ? 0x0f0000 : PATCOPY );
|
|
r.right = r.left + thumbSize;
|
|
}
|
|
|
|
/* Draw the thumb */
|
|
|
|
SelectObject32( hdc, GetSysColorBrush32(COLOR_BTNFACE) );
|
|
Rectangle32( hdc, r.left, r.top, r.right, r.bottom );
|
|
r.top++, r.left++;
|
|
DrawEdge32( 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( HWND32 hwnd, HDC32 hdc, INT32 nBar,
|
|
BOOL32 arrows, BOOL32 interior )
|
|
{
|
|
INT32 arrowSize, thumbSize, thumbPos;
|
|
RECT32 rect;
|
|
BOOL32 vertical;
|
|
WND *wndPtr = WIN_FindWndPtr( hwnd );
|
|
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,
|
|
&arrowSize, &thumbSize, &thumbPos );
|
|
|
|
/* Draw the arrows */
|
|
|
|
if (arrows && arrowSize)
|
|
{
|
|
if( vertical == SCROLL_trackVertical && GetCapture32() == 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,
|
|
thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_RefreshScrollBar
|
|
*
|
|
* Repaint the scroll bar interior after a SetScrollRange() or
|
|
* SetScrollPos() call.
|
|
*/
|
|
static void SCROLL_RefreshScrollBar( HWND32 hwnd, INT32 nBar,
|
|
BOOL32 arrows, BOOL32 interior )
|
|
{
|
|
HDC32 hdc = GetDCEx32( hwnd, 0,
|
|
DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
|
|
if (!hdc) return;
|
|
|
|
SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
|
|
ReleaseDC32( hwnd, hdc );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_HandleKbdEvent
|
|
*
|
|
* Handle a keyboard event (only for SB_CTL scrollbars).
|
|
*/
|
|
static void SCROLL_HandleKbdEvent( HWND32 hwnd, WPARAM32 wParam )
|
|
{
|
|
WND *wndPtr = WIN_FindWndPtr( hwnd );
|
|
WPARAM32 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;
|
|
}
|
|
SendMessage32A( GetParent32(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( HWND32 hwnd, INT32 nBar, UINT32 msg, POINT32 pt)
|
|
{
|
|
/* Previous mouse position for timer events */
|
|
static POINT32 prevPt;
|
|
/* Thumb position when tracking started. */
|
|
static UINT32 trackThumbPos;
|
|
/* Position in the scroll-bar of the last button-down event. */
|
|
static INT32 lastClickPos;
|
|
/* Position in the scroll-bar of the last mouse event. */
|
|
static INT32 lastMousePos;
|
|
|
|
enum SCROLL_HITTEST hittest;
|
|
HWND32 hwndOwner, hwndCtl;
|
|
BOOL32 vertical;
|
|
INT32 arrowSize, thumbSize, thumbPos;
|
|
RECT32 rect;
|
|
HDC32 hdc;
|
|
|
|
SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
|
|
if (!infoPtr) return;
|
|
if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
|
|
return;
|
|
|
|
hdc = GetDCEx32( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
|
|
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
|
|
&arrowSize, &thumbSize, &thumbPos );
|
|
hwndOwner = (nBar == SB_CTL) ? GetParent32(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;
|
|
SetCapture32( hwnd );
|
|
if (nBar == SB_CTL) SetFocus32( hwnd );
|
|
break;
|
|
|
|
case WM_MOUSEMOVE:
|
|
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=%d,%d hit=%d\n",
|
|
hwnd, nBar, msg, pt.x, pt.y, hittest );
|
|
|
|
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))
|
|
{
|
|
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_LINEUP, hwndCtl );
|
|
SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
|
|
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
|
|
(TIMERPROC32)0 );
|
|
}
|
|
}
|
|
else KillSystemTimer32( hwnd, SCROLL_TIMER );
|
|
break;
|
|
|
|
case SCROLL_TOP_RECT:
|
|
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))
|
|
{
|
|
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_PAGEUP, hwndCtl );
|
|
SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
|
|
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
|
|
(TIMERPROC32)0 );
|
|
}
|
|
}
|
|
else KillSystemTimer32( 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);
|
|
}
|
|
else if (msg == WM_LBUTTONUP)
|
|
{
|
|
SCROLL_TrackingWin = 0;
|
|
SCROLL_MovingThumb = FALSE;
|
|
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
|
|
thumbPos, infoPtr->flags, vertical,
|
|
FALSE, FALSE );
|
|
}
|
|
else /* WM_MOUSEMOVE */
|
|
{
|
|
UINT32 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);
|
|
}
|
|
if (pos != lastMousePos)
|
|
{
|
|
SCROLL_DrawMovingThumb( hdc, &rect, vertical,
|
|
arrowSize, thumbSize );
|
|
lastMousePos = pos;
|
|
SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
|
|
SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
|
|
vertical,
|
|
SCROLL_TrackingPos );
|
|
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
|
|
hwndCtl );
|
|
SCROLL_DrawMovingThumb( hdc, &rect, vertical,
|
|
arrowSize, thumbSize );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case SCROLL_BOTTOM_RECT:
|
|
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))
|
|
{
|
|
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_PAGEDOWN, hwndCtl );
|
|
SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
|
|
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
|
|
(TIMERPROC32)0 );
|
|
}
|
|
}
|
|
else KillSystemTimer32( 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))
|
|
{
|
|
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_LINEDOWN, hwndCtl );
|
|
SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
|
|
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
|
|
(TIMERPROC32)0 );
|
|
}
|
|
}
|
|
else KillSystemTimer32( hwnd, SCROLL_TIMER );
|
|
break;
|
|
}
|
|
|
|
if (msg == WM_LBUTTONUP)
|
|
{
|
|
hittest = SCROLL_trackHitTest;
|
|
SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
|
|
|
|
if (hittest == SCROLL_THUMB)
|
|
{
|
|
UINT32 val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
|
|
trackThumbPos + lastMousePos - lastClickPos );
|
|
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
|
|
}
|
|
else
|
|
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_ENDSCROLL, hwndCtl );
|
|
}
|
|
|
|
ReleaseDC32( hwnd, hdc );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ScrollBarWndProc
|
|
*/
|
|
LRESULT WINAPI ScrollBarWndProc( HWND32 hwnd, UINT32 message, WPARAM32 wParam,
|
|
LPARAM lParam )
|
|
{
|
|
switch(message)
|
|
{
|
|
case WM_CREATE:
|
|
{
|
|
CREATESTRUCT32A *lpCreat = (CREATESTRUCT32A *)lParam;
|
|
if (lpCreat->style & SBS_SIZEBOX)
|
|
{
|
|
FIXME(scroll, "Unimplemented style SBS_SIZEBOX.\n" );
|
|
return 0;
|
|
}
|
|
|
|
if (lpCreat->style & SBS_VERT)
|
|
{
|
|
if (lpCreat->style & SBS_LEFTALIGN)
|
|
MoveWindow32( hwnd, lpCreat->x, lpCreat->y,
|
|
SYSMETRICS_CXVSCROLL+1, lpCreat->cy, FALSE );
|
|
else if (lpCreat->style & SBS_RIGHTALIGN)
|
|
MoveWindow32( hwnd,
|
|
lpCreat->x+lpCreat->cx-SYSMETRICS_CXVSCROLL-1,
|
|
lpCreat->y,
|
|
SYSMETRICS_CXVSCROLL+1, lpCreat->cy, FALSE );
|
|
}
|
|
else /* SBS_HORZ */
|
|
{
|
|
if (lpCreat->style & SBS_TOPALIGN)
|
|
MoveWindow32( hwnd, lpCreat->x, lpCreat->y,
|
|
lpCreat->cx, SYSMETRICS_CYHSCROLL+1, FALSE );
|
|
else if (lpCreat->style & SBS_BOTTOMALIGN)
|
|
MoveWindow32( hwnd,
|
|
lpCreat->x,
|
|
lpCreat->y+lpCreat->cy-SYSMETRICS_CYHSCROLL-1,
|
|
lpCreat->cx, SYSMETRICS_CYHSCROLL+1, FALSE );
|
|
}
|
|
}
|
|
if (!hUpArrow) SCROLL_LoadBitmaps();
|
|
TRACE(scroll, "ScrollBar creation, hwnd=%04x\n", hwnd );
|
|
return 0;
|
|
|
|
case WM_LBUTTONDOWN:
|
|
case WM_LBUTTONUP:
|
|
case WM_MOUSEMOVE:
|
|
case WM_SYSTIMER:
|
|
{
|
|
POINT32 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 */
|
|
|
|
case WM_PAINT:
|
|
{
|
|
PAINTSTRUCT32 ps;
|
|
HDC32 hdc = BeginPaint32( hwnd, &ps );
|
|
SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
|
|
EndPaint32( hwnd, &ps );
|
|
}
|
|
break;
|
|
|
|
case SBM_SETPOS16:
|
|
case SBM_SETPOS32:
|
|
return SetScrollPos32( hwnd, SB_CTL, wParam, (BOOL32)lParam );
|
|
|
|
case SBM_GETPOS16:
|
|
case SBM_GETPOS32:
|
|
return GetScrollPos32( hwnd, SB_CTL );
|
|
|
|
case SBM_SETRANGE16:
|
|
SetScrollRange32( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam),
|
|
wParam /* FIXME: Is this correct? */ );
|
|
return 0;
|
|
|
|
case SBM_SETRANGE32:
|
|
SetScrollRange32( hwnd, SB_CTL, wParam, lParam, FALSE );
|
|
return 0; /* FIXME: return previous position */
|
|
|
|
case SBM_GETRANGE16:
|
|
FIXME(scroll, "don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam, lParam );
|
|
return 0;
|
|
|
|
case SBM_GETRANGE32:
|
|
GetScrollRange32( hwnd, SB_CTL, (LPINT32)wParam, (LPINT32)lParam );
|
|
return 0;
|
|
|
|
case SBM_ENABLE_ARROWS16:
|
|
case SBM_ENABLE_ARROWS32:
|
|
return EnableScrollBar32( hwnd, SB_CTL, wParam );
|
|
|
|
case SBM_SETRANGEREDRAW32:
|
|
SetScrollRange32( hwnd, SB_CTL, wParam, lParam, TRUE );
|
|
return 0; /* FIXME: return previous position */
|
|
|
|
case SBM_SETSCROLLINFO32:
|
|
return SetScrollInfo32( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
|
|
|
|
case SBM_GETSCROLLINFO32:
|
|
return GetScrollInfo32( 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 );
|
|
break;
|
|
|
|
default:
|
|
if (message >= WM_USER)
|
|
WARN(scroll, "unknown msg %04x wp=%04x lp=%08lx\n",
|
|
message, wParam, lParam );
|
|
return DefWindowProc32A( hwnd, message, wParam, lParam );
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollInfo16 (USER.475)
|
|
*/
|
|
INT16 WINAPI SetScrollInfo16( HWND16 hwnd, INT16 nBar, const SCROLLINFO *info,
|
|
BOOL16 bRedraw )
|
|
{
|
|
return (INT16)SetScrollInfo32( hwnd, nBar, info, bRedraw );
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollInfo32 (USER32.501)
|
|
* 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
|
|
* the text), and info->nPage=25.
|
|
*/
|
|
INT32 WINAPI SetScrollInfo32(
|
|
HWND32 hwnd /* [I] Handle of window whose scrollbar will be affected */,
|
|
INT32 nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
|
|
const SCROLLINFO *info /* [I] Specifies what to change and new values */,
|
|
BOOL32 bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
|
|
{
|
|
INT32 action;
|
|
INT32 retVal = SCROLL_SetScrollInfo( hwnd, nBar, info, &action );
|
|
|
|
if( action & SA_SSI_HIDE )
|
|
SCROLL_ShowScrollBar( hwnd, nBar, FALSE, FALSE );
|
|
else
|
|
{
|
|
if( action & SA_SSI_SHOW )
|
|
if( SCROLL_ShowScrollBar( hwnd, nBar, TRUE, TRUE ) )
|
|
return retVal; /* SetWindowPos() already did the painting */
|
|
|
|
if( bRedraw && (action & SA_SSI_REFRESH))
|
|
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
|
|
else if( action & SA_SSI_REPAINT_ARROWS )
|
|
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE );
|
|
}
|
|
return retVal;
|
|
}
|
|
|
|
INT32 SCROLL_SetScrollInfo( HWND32 hwnd, INT32 nBar,
|
|
const SCROLLINFO *info, INT32 *action )
|
|
{
|
|
/* Update the scrollbar state and set action flags according to
|
|
* what has to be done graphics wise. */
|
|
|
|
SCROLLBAR_INFO *infoPtr;
|
|
UINT32 new_flags;
|
|
|
|
dbg_decl_str(scroll, 256);
|
|
|
|
*action = 0;
|
|
|
|
if (!(infoPtr = SCROLL_GetScrollInfo(hwnd, nBar))) return 0;
|
|
if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
|
|
if ((info->cbSize != sizeof(*info)) &&
|
|
(info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
|
|
|
|
/* Set the page size */
|
|
|
|
if (info->fMask & SIF_PAGE)
|
|
{
|
|
dsprintf(scroll, " page=%d", info->nPage );
|
|
if( infoPtr->Page != info->nPage )
|
|
{
|
|
infoPtr->Page = info->nPage;
|
|
*action |= SA_SSI_REFRESH;
|
|
}
|
|
}
|
|
|
|
/* Set the scroll pos */
|
|
|
|
if (info->fMask & SIF_POS)
|
|
{
|
|
dsprintf(scroll, " pos=%d", info->nPos );
|
|
if( infoPtr->CurVal != info->nPos )
|
|
{
|
|
infoPtr->CurVal = info->nPos;
|
|
*action |= SA_SSI_REFRESH;
|
|
}
|
|
}
|
|
|
|
/* Set the scroll range */
|
|
|
|
if (info->fMask & SIF_RANGE)
|
|
{
|
|
dsprintf(scroll, " min=%d max=%d", info->nMin, info->nMax );
|
|
|
|
/* Invalid range -> range is set to (0,0) */
|
|
if ((info->nMin > info->nMax) ||
|
|
((UINT32)(info->nMax - info->nMin) >= 0x80000000))
|
|
{
|
|
infoPtr->MinVal = 0;
|
|
infoPtr->MaxVal = 0;
|
|
}
|
|
else
|
|
{
|
|
if( infoPtr->MinVal != info->nMin ||
|
|
infoPtr->MaxVal != info->nMax )
|
|
{
|
|
*action |= SA_SSI_REFRESH;
|
|
infoPtr->MinVal = info->nMin;
|
|
infoPtr->MaxVal = info->nMax;
|
|
}
|
|
}
|
|
}
|
|
|
|
TRACE(scroll, "hwnd=%04x bar=%d %s\n",
|
|
hwnd, nBar, dbg_str(scroll));
|
|
|
|
/* Make sure the page size is valid */
|
|
|
|
if (infoPtr->Page < 0) infoPtr->Page = 0;
|
|
else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
|
|
infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
|
|
|
|
/* Make sure the pos is inside the range */
|
|
|
|
if (infoPtr->CurVal < infoPtr->MinVal)
|
|
infoPtr->CurVal = infoPtr->MinVal;
|
|
else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
|
|
infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
|
|
|
|
TRACE(scroll, " new values: page=%d pos=%d min=%d max=%d\n",
|
|
infoPtr->Page, infoPtr->CurVal,
|
|
infoPtr->MinVal, infoPtr->MaxVal );
|
|
|
|
/* Check if the scrollbar should be hidden or disabled */
|
|
|
|
if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
|
|
{
|
|
new_flags = infoPtr->flags;
|
|
if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
|
|
{
|
|
/* Hide or disable scroll-bar */
|
|
if (info->fMask & SIF_DISABLENOSCROLL)
|
|
{
|
|
new_flags = ESB_DISABLE_BOTH;
|
|
*action |= SA_SSI_REFRESH;
|
|
}
|
|
else if (nBar != SB_CTL)
|
|
{
|
|
*action = SA_SSI_HIDE;
|
|
goto done;
|
|
}
|
|
}
|
|
else /* Show and enable scroll-bar */
|
|
{
|
|
new_flags = 0;
|
|
if (nBar != SB_CTL)
|
|
*action |= SA_SSI_SHOW;
|
|
}
|
|
|
|
if (infoPtr->flags != new_flags) /* check arrow flags */
|
|
{
|
|
infoPtr->flags = new_flags;
|
|
*action |= SA_SSI_REPAINT_ARROWS;
|
|
}
|
|
}
|
|
|
|
done:
|
|
/* Return current position */
|
|
|
|
return infoPtr->CurVal;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* GetScrollInfo16 (USER.476)
|
|
*/
|
|
BOOL16 WINAPI GetScrollInfo16( HWND16 hwnd, INT16 nBar, LPSCROLLINFO info )
|
|
{
|
|
return GetScrollInfo32( hwnd, nBar, info );
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* GetScrollInfo32 (USER32.284)
|
|
* GetScrollInfo32 can be used to retrieve the position, upper bound,
|
|
* lower bound, and page size of a scrollbar control.
|
|
*
|
|
* RETURNS STD
|
|
*/
|
|
BOOL32 WINAPI GetScrollInfo32(
|
|
HWND32 hwnd /* [I] Handle of window */ ,
|
|
INT32 nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
|
|
LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
|
|
{
|
|
SCROLLBAR_INFO *infoPtr;
|
|
|
|
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
|
|
if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
|
|
if ((info->cbSize != sizeof(*info)) &&
|
|
(info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
|
|
|
|
if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
|
|
if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
|
|
if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
|
|
info->nTrackPos = (SCROLL_TrackingWin==hwnd) ? SCROLL_TrackingVal : 0;
|
|
if (info->fMask & SIF_RANGE)
|
|
{
|
|
info->nMin = infoPtr->MinVal;
|
|
info->nMax = infoPtr->MaxVal;
|
|
}
|
|
return (info->fMask & SIF_ALL) != 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollPos16 (USER.62)
|
|
*/
|
|
INT16 WINAPI SetScrollPos16( HWND16 hwnd, INT16 nBar, INT16 nPos,
|
|
BOOL16 bRedraw )
|
|
{
|
|
return (INT16)SetScrollPos32( hwnd, nBar, nPos, bRedraw );
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollPos32 (USER32.502)
|
|
*
|
|
* RETURNS
|
|
* Success: Scrollbar position
|
|
* Failure: 0
|
|
*
|
|
* REMARKS
|
|
* Note the ambiguity when 0 is returned. Use GetLastError
|
|
* to make sure there was an error (and to know which one).
|
|
*/
|
|
INT32 WINAPI SetScrollPos32(
|
|
HWND32 hwnd /* [I] Handle of window whose scrollbar will be affected */,
|
|
INT32 nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
|
|
INT32 nPos /* [I] New value */,
|
|
BOOL32 bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
|
|
{
|
|
SCROLLINFO info;
|
|
SCROLLBAR_INFO *infoPtr;
|
|
INT32 oldPos;
|
|
|
|
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
|
|
oldPos = infoPtr->CurVal;
|
|
info.cbSize = sizeof(info);
|
|
info.nPos = nPos;
|
|
info.fMask = SIF_POS;
|
|
SetScrollInfo32( hwnd, nBar, &info, bRedraw );
|
|
return oldPos;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* GetScrollPos16 (USER.63)
|
|
*/
|
|
INT16 WINAPI GetScrollPos16( HWND16 hwnd, INT16 nBar )
|
|
{
|
|
return (INT16)GetScrollPos32( hwnd, nBar );
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* GetScrollPos32 (USER32.285)
|
|
*
|
|
* RETURNS
|
|
* Success: Current position
|
|
* Failure: 0
|
|
*
|
|
* REMARKS
|
|
* Note the ambiguity when 0 is returned. Use GetLastError
|
|
* to make sure there was an error (and to know which one).
|
|
*/
|
|
INT32 WINAPI GetScrollPos32(
|
|
HWND32 hwnd, /* [I] Handle of window */
|
|
INT32 nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
|
|
{
|
|
SCROLLBAR_INFO *infoPtr;
|
|
|
|
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
|
|
return infoPtr->CurVal;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollRange16 (USER.64)
|
|
*/
|
|
void WINAPI SetScrollRange16( HWND16 hwnd, INT16 nBar,
|
|
INT16 MinVal, INT16 MaxVal, BOOL16 bRedraw )
|
|
{
|
|
/* Invalid range -> range is set to (0,0) */
|
|
if ((INT32)MaxVal - (INT32)MinVal > 0x7fff) MinVal = MaxVal = 0;
|
|
SetScrollRange32( hwnd, nBar, MinVal, MaxVal, bRedraw );
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollRange32 (USER32.503)
|
|
*
|
|
* RETURNS STD
|
|
*/
|
|
BOOL32 WINAPI SetScrollRange32(
|
|
HWND32 hwnd, /* [I] Handle of window whose scrollbar will be affected */
|
|
INT32 nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
|
|
INT32 MinVal, /* [I] New minimum value */
|
|
INT32 MaxVal, /* [I] New maximum value */
|
|
BOOL32 bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
|
|
{
|
|
SCROLLINFO info;
|
|
|
|
info.cbSize = sizeof(info);
|
|
info.nMin = MinVal;
|
|
info.nMax = MaxVal;
|
|
info.fMask = SIF_RANGE;
|
|
SetScrollInfo32( hwnd, nBar, &info, bRedraw );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SCROLL_SetNCSbState
|
|
*
|
|
* Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
|
|
*/
|
|
INT32 SCROLL_SetNCSbState(WND* wndPtr, int vMin, int vMax, int vPos,
|
|
int hMin, int hMax, int hPos)
|
|
{
|
|
INT32 vA, hA;
|
|
SCROLLINFO vInfo, hInfo;
|
|
|
|
vInfo.cbSize = hInfo.cbSize = sizeof(SCROLLINFO);
|
|
vInfo.nMin = vMin; hInfo.nMin = hMin;
|
|
vInfo.nMax = vMax; hInfo.nMax = hMax;
|
|
vInfo.nPos = vPos; hInfo.nPos = hPos;
|
|
vInfo.fMask = hInfo.fMask = SIF_RANGE | SIF_POS;
|
|
|
|
SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_VERT, &vInfo, &vA );
|
|
SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_HORZ, &hInfo, &hA );
|
|
|
|
if( !SCROLL_ShowScrollBar( wndPtr->hwndSelf, SB_BOTH,
|
|
(hA & SA_SSI_SHOW),(vA & SA_SSI_SHOW) ) )
|
|
{
|
|
/* SetWindowPos() wasn't called, just redraw the scrollbars if needed */
|
|
if( vA & SA_SSI_REFRESH )
|
|
SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_VERT, FALSE, TRUE );
|
|
|
|
if( hA & SA_SSI_REFRESH )
|
|
SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_HORZ, FALSE, TRUE );
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* GetScrollRange16 (USER.65)
|
|
*/
|
|
BOOL16 WINAPI GetScrollRange16( HWND16 hwnd, INT16 nBar,
|
|
LPINT16 lpMin, LPINT16 lpMax)
|
|
{
|
|
INT32 min, max;
|
|
BOOL16 ret = GetScrollRange32( hwnd, nBar, &min, &max );
|
|
if (lpMin) *lpMin = min;
|
|
if (lpMax) *lpMax = max;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* GetScrollRange32 (USER32.286)
|
|
*
|
|
* RETURNS STD
|
|
*/
|
|
BOOL32 WINAPI GetScrollRange32(
|
|
HWND32 hwnd, /* [I] Handle of window */
|
|
INT32 nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
|
|
LPINT32 lpMin, /* [O] Where to store minimum value */
|
|
LPINT32 lpMax /* [O] Where to store maximum value */)
|
|
{
|
|
SCROLLBAR_INFO *infoPtr;
|
|
|
|
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar )))
|
|
{
|
|
if (lpMin) lpMin = 0;
|
|
if (lpMax) lpMax = 0;
|
|
return FALSE;
|
|
}
|
|
if (lpMin) *lpMin = infoPtr->MinVal;
|
|
if (lpMax) *lpMax = infoPtr->MaxVal;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SCROLL_ShowScrollBar()
|
|
*
|
|
* Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
|
|
* NOTE: fShowV/fShowH must be zero when nBar is SB_HORZ/SB_VERT.
|
|
*/
|
|
BOOL32 SCROLL_ShowScrollBar( HWND32 hwnd, INT32 nBar,
|
|
BOOL32 fShowH, BOOL32 fShowV )
|
|
{
|
|
WND *wndPtr = WIN_FindWndPtr( hwnd );
|
|
|
|
if (!wndPtr) return FALSE;
|
|
TRACE(scroll, "hwnd=%04x bar=%d horz=%d, vert=%d\n",
|
|
hwnd, nBar, fShowH, fShowV );
|
|
|
|
switch(nBar)
|
|
{
|
|
case SB_CTL:
|
|
ShowWindow32( hwnd, fShowH ? SW_SHOW : SW_HIDE );
|
|
return TRUE;
|
|
|
|
case SB_BOTH:
|
|
case SB_HORZ:
|
|
if (fShowH)
|
|
{
|
|
fShowH = !(wndPtr->dwStyle & WS_HSCROLL);
|
|
wndPtr->dwStyle |= WS_HSCROLL;
|
|
}
|
|
else /* hide it */
|
|
{
|
|
fShowH = (wndPtr->dwStyle & WS_HSCROLL);
|
|
wndPtr->dwStyle &= ~WS_HSCROLL;
|
|
}
|
|
if( nBar == SB_HORZ ) break;
|
|
/* fall through */
|
|
|
|
case SB_VERT:
|
|
if (fShowV)
|
|
{
|
|
fShowV = !(wndPtr->dwStyle & WS_VSCROLL);
|
|
wndPtr->dwStyle |= WS_VSCROLL;
|
|
}
|
|
else /* hide it */
|
|
{
|
|
fShowV = (wndPtr->dwStyle & WS_VSCROLL);
|
|
wndPtr->dwStyle &= ~WS_VSCROLL;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return FALSE; /* Nothing to do! */
|
|
}
|
|
|
|
if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */
|
|
{
|
|
SetWindowPos32( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
|
|
| SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE; /* no frame changes */
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ShowScrollBar16 (USER.267)
|
|
*/
|
|
void WINAPI ShowScrollBar16( HWND16 hwnd, INT16 nBar, BOOL16 fShow )
|
|
{
|
|
SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
|
|
(nBar == SB_HORZ) ? 0 : fShow );
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ShowScrollBar32 (USER32.532)
|
|
*
|
|
* RETURNS STD
|
|
*/
|
|
BOOL32 WINAPI ShowScrollBar32(
|
|
HWND32 hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
|
|
INT32 nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
|
|
BOOL32 fShow /* [I] TRUE = show, FALSE = hide */)
|
|
{
|
|
SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
|
|
(nBar == SB_HORZ) ? 0 : fShow );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* EnableScrollBar16 (USER.482)
|
|
*/
|
|
BOOL16 WINAPI EnableScrollBar16( HWND16 hwnd, INT16 nBar, UINT16 flags )
|
|
{
|
|
return EnableScrollBar32( hwnd, nBar, flags );
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* EnableScrollBar32 (USER32.171)
|
|
*/
|
|
BOOL32 WINAPI EnableScrollBar32( HWND32 hwnd, INT32 nBar, UINT32 flags )
|
|
{
|
|
BOOL32 bFineWithMe;
|
|
SCROLLBAR_INFO *infoPtr;
|
|
|
|
TRACE(scroll, "%04x %d %d\n", hwnd, nBar, flags );
|
|
|
|
flags &= ESB_DISABLE_BOTH;
|
|
|
|
if (nBar == SB_BOTH)
|
|
{
|
|
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_VERT ))) return FALSE;
|
|
if (!(bFineWithMe = (infoPtr->flags == flags)) )
|
|
{
|
|
infoPtr->flags = flags;
|
|
SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE );
|
|
}
|
|
nBar = SB_HORZ;
|
|
}
|
|
else
|
|
bFineWithMe = TRUE;
|
|
|
|
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
|
|
if (bFineWithMe && infoPtr->flags == flags) return FALSE;
|
|
infoPtr->flags = flags;
|
|
|
|
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
|
|
return TRUE;
|
|
}
|