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wine/controls/scroll.c
Alexandre Julliard a69b88b2f2 Release 980315 
Sun Mar 15 03:46:50 1998  Dimitrie O. Paun  <dimi@mail.cs.toronto.edu>

	* [*/*]
	Fixed some dprintf_ such that there is one and only one
	new line for each dprintf and that new line occurs at the end.
	Transformed some fprintfs into proper debug statements.
	Removed much redundancy from most of the debug statements. The
	redundancy appeared because now the component and function
	name is output automatically. Most debug statements also used to
	output the name of the function.
	All these changes prepared the source to switch completely to
	the new debugging interface.
	For more info, refer to ./documentation/debug-msg

Sat Mar 14 19:45:23 1997  Andreas Mohr <100.30936@germany.net>

	* [misc/shell.c] [if1632/kernel.spec]
	Changed parameters of FUNC004() to fix a crash.
	Not sure if this fix is correct (doc wanted).

	* [windows/user.c] [if1632/user.spec] [include/user.h]
	Implemented UserSeeUserDo.

	* [msdos/int21.c] [include/msdos.h]
	Added "GET LIST OF LISTS" (INT 21/52h).

Sat Mar 14 15:48:02 1998  Douglas Ridgway <ridgway@gmcl.com>

	* [include/windows.h] [relay32/gdi32.spec] [objects/enhmetafile.c]
	Beginnings of enhanced metafile support.

Fri Mar 13 20:53:09 1998  John Richardson <jrichard@zko.dec.com>

	* [win32/console.c]
	Restart interrupted console writes.

Fri Mar 13 18:59:24 1998  Matthew Becker <mbecker@glasscity.net>

	* [*/*.c]
	Updated documentation for API manpages.

	* [windows/dce.c]
	ReleaseDC16: Fixed cast.

	* [include/windows.h] [memory/virtual.c]
	VirtualQuery{Ex} should return DWORD instead of BOOL32.

Fri Mar 13 13:03:06 1998  Marcus Meissner <msmeissn@cip.informatik.uni-erlangen.de>

	* [README][documentation/status/]
	README updated, added lzexpand,version and multimedia
	status notes to new documentation/status directory.

	* [ole/*.c][if1632/typelib.spec]
	Added typelib stubs, several small additions and fixes.

	* [loader/pe_image.c]
	Fixed a small bug (fixup_imports got passed the wrong hModule in a
	remapcase).

	* [loader/signal.c][if1632/signal.c][misc/winsock_dns.c]
	  [loader/module.c]
	Fixed some recursive debugger crashes (caused by invalid FS).

	* [misc/registry.c]
	Two bugs fixed.

Fri Mar 13 04:55:01 1998  David Lee Lambert <lamber45@egr.msu.edu>

	* [include/winnt.h] [include/winnls.h]
	Moved LANG_xxx flags to winnls.h

	* [include/winnls.h]
	Added flags for GetDateFormat(); fixed validity of
	LOCALE_SYSTEM_DEFAULT.

	* [include/windows.h] 
	Added GetTimeFormat() prototypes.

	* [ole/ole2nls.c]
	Implemented ASCII date- and time-functions,  using an
	optimized common core;  added stubs for Unicode versions;  
	started work on a Unicode core.

	* [AUTHORS]
	Added my name.

Mon Mar  9 20:10:15 1998  Eric Kohl <ekohl@abo.rhein-zeitung.de>

	* [relay32/comctl32.spec] [include/imagelist.h]
	  [include/commctrl.h] [misc/imagelist.c] [misc/Makefile.in]
	First attempt at implementing ImageLists.

Sun Mar  8 20:19:49 1998  Uwe Bonnes  <bon@elektron.ikp.physik.tu-darmstadt.de>

	* [files/dos_fs.c] [configure.in]
	Try to get FileTimeToLocalFileTime,FileTimeToSystemTime and
	SystemTimeToFileTime right.
	Use timegm() where available.

	* [misc/lstr.c]
	Fix an off by one error in FormatMessage and handle the case 
	when args = NULL (used by programs to get the length of the 
	string).

	* [win32/console.c]
	Actual display a per-process Title string, better working
	attempt for WriteConsole32W and ReadConsole32W.

Fri Mar  6 20:33:45 1998  Slaven Rezic  <eserte@cs.tu-berlin.de>

	* [include/config.h.in][configure.in][multimedia/audio.c]
	  [multimedia/dsound.c]
	Added check for FreeBSD sound system.

Sun Mar  1 17:40:10 1998  Jason Schonberg <schon@mti.sgi.com>

	* [controls/edit.c] [include/ole.h] [include/shlobj.h]
	Removed final commas in enum types.

Mon Feb 23 07:52:18 1998  Luiz Otavio L. Zorzella  <zorzella@nr.conexware.com>

	* [multimedia/time.c]
	Workaround to avoid infinite recursion inside timeGetTime.

	* [multimedia/audio.c]
	WODM_GETNUMDEVS and WIDM_GETNUMDEVS only return 1 now if the
	SOUND_DEV can be opened, or if it's busy.
1998-03-15 20:29:56 +00:00

1295 lines
42 KiB
C
Raw Blame History

/*
* Scrollbar control
*
* Copyright 1993 Martin Ayotte
* Copyright 1994, 1996 Alexandre Julliard
*/
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "windows.h"
#include "sysmetrics.h"
#include "scroll.h"
#include "graphics.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
/* 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 */
};
/* Thumb-tracking info */
static HWND32 SCROLL_TrackingWin = 0;
static INT32 SCROLL_TrackingBar = 0;
static INT32 SCROLL_TrackingPos = 0;
static INT32 SCROLL_TrackingVal = 0;
/* Is the moving thumb being displayed? */
static BOOL32 SCROLL_MovingThumb = FALSE;
/***********************************************************************
* SCROLL_LoadBitmaps
*/
static void SCROLL_LoadBitmaps(void)
{
hUpArrow = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_UPARROW) );
hDnArrow = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_DNARROW) );
hLfArrow = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_LFARROW) );
hRgArrow = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_RGARROW) );
hUpArrowD = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_UPARROWD) );
hDnArrowD = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_DNARROWD) );
hLfArrowD = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_LFARROWD) );
hRgArrowD = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_RGARROWD) );
hUpArrowI = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_UPARROWI) );
hDnArrowI = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_DNARROWI) );
hLfArrowI = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_LFARROWI) );
hRgArrowI = LoadBitmap16( 0, MAKEINTRESOURCE(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 - 1;
lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left +1;
lprect->bottom = lprect->top + SYSMETRICS_CYHSCROLL + 1;
vertical = FALSE;
break;
case SB_VERT:
lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top - 1;
lprect->right = lprect->left + SYSMETRICS_CXVSCROLL + 1;
lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top +1;
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;
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 + 1) < 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;
else
*thumbPos = *arrowSize + 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) <= 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 + 1) <= 0) return infoPtr->MinVal;
pos = MAX( 0, pos - SYSMETRICS_CXVSCROLL );
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_HitTest
*
* Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
*/
static enum SCROLL_HITTEST SCROLL_HitTest( HWND32 hwnd, INT32 nBar,
POINT32 pt )
{
INT32 arrowSize, thumbSize, thumbPos;
RECT32 rect;
BOOL32 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
&arrowSize, &thumbSize, &thumbPos );
if (!PtInRect32( &rect, pt )) return SCROLL_NOWHERE;
if (vertical)
{
if (pt.y <= rect.top + arrowSize + 1) 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;
return SCROLL_THUMB;
}
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+1,
vertical ? arrowSize+1 : rect->bottom-rect->top,
hdcMem, 0, 0,
SYSMETRICS_CXVSCROLL + 1, SYSMETRICS_CYHSCROLL + 1,
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 - 1,
rect->right - rect->left, arrowSize + 1,
hdcMem, 0, 0,
SYSMETRICS_CXVSCROLL + 1, SYSMETRICS_CYHSCROLL + 1,
SRCCOPY );
else
StretchBlt32( hdc, rect->right - arrowSize - 1, rect->top,
arrowSize + 1, rect->bottom - rect->top,
hdcMem, 0, 0,
SYSMETRICS_CXVSCROLL + 1, SYSMETRICS_CYHSCROLL + 1,
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) r.top = rect->top + arrowSize;
if (r.top + thumbSize >= rect->bottom - arrowSize)
r.top = rect->bottom - arrowSize - thumbSize - 1;
r.bottom = r.top + thumbSize + 1;
}
else
{
r.left += SCROLL_TrackingPos;
if (r.left < rect->left + arrowSize) r.left = rect->left + arrowSize;
if (r.left + thumbSize >= rect->right - arrowSize)
r.left = rect->right - arrowSize - thumbSize - 1;
r.right = r.left + thumbSize + 1;
}
InflateRect32( &r, -1, -1 );
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 - 1;
r.bottom -= arrowSize;
r.right--;
}
else
{
r.left += arrowSize - 1;
r.right -= arrowSize;
r.bottom--;
}
/* Draw the scroll bar frame */
GRAPH_DrawRectangle( hdc, r.left, r.top, r.right - r.left, r.bottom - r.top, 0);
/* 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,
top_selected ? 0x0f0000 : PATCOPY );
r.top += thumbPos - arrowSize;
PatBlt32( hdc, r.left + 1, r.top + thumbSize + 1,
r.right - r.left - 2,
r.bottom - r.top - thumbSize - 2,
bottom_selected ? 0x0f0000 : PATCOPY );
r.bottom = r.top + thumbSize + 2;
}
else /* horizontal */
{
PatBlt32( hdc, r.left + 1, r.top + 1,
thumbPos - arrowSize,
r.bottom - r.top - 2,
top_selected ? 0x0f0000 : PATCOPY );
r.left += thumbPos - arrowSize;
PatBlt32( hdc, r.left + thumbSize + 1, r.top + 1,
r.right - r.left - thumbSize - 2,
r.bottom - r.top - 2,
bottom_selected ? 0x0f0000 : PATCOPY );
r.right = r.left + thumbSize + 2;
}
/* Draw the thumb */
SelectObject32( hdc, GetSysColorBrush32(COLOR_BTNFACE) );
Rectangle32( hdc, r.left, r.top, r.right, r.bottom );
InflateRect32( &r, -1, -1 );
GRAPH_DrawReliefRect( hdc, &r, 1, 2, FALSE );
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 )
{
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;
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
&arrowSize, &thumbSize, &thumbPos );
/* Draw the arrows */
if (arrows && arrowSize) SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize,
vertical, FALSE, FALSE );
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 )
{
HDC32 hdc = GetDCEx32( hwnd, 0,
DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
if (!hdc) return;
SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows );
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;
/* Hit test code of the last button-down event */
static enum SCROLL_HITTEST trackHitTest;
/* 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 ((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 */
trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt );
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 );
prevPt = pt;
break;
case WM_LBUTTONUP:
hittest = SCROLL_NOWHERE;
ReleaseCapture();
break;
case WM_SYSTIMER:
pt = prevPt;
hittest = SCROLL_HitTest( hwnd, nBar, pt );
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(trackHitTest)
{
case SCROLL_NOWHERE: /* No tracking in progress */
break;
case SCROLL_TOP_ARROW:
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
(hittest == trackHitTest), FALSE );
if (hittest == 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 == trackHitTest), FALSE );
if (hittest == 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 (!PtInRect32( &rect, pt )) pos = lastClickPos;
else 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 == trackHitTest) );
if (hittest == 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 == trackHitTest) );
if (hittest == 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)
{
if (trackHitTest == 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 );
trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
}
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 );
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)
*/
INT32 WINAPI SetScrollInfo32( HWND32 hwnd, INT32 nBar, const SCROLLINFO *info,
BOOL32 bRedraw )
{
SCROLLBAR_INFO *infoPtr;
UINT32 new_flags;
BOOL32 repaint_arrows = FALSE;
dbg_decl_str(scroll, 256);
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 );
infoPtr->Page = info->nPage;
}
/* Set the scroll pos */
if (info->fMask & SIF_POS)
{
dsprintf(scroll, " pos=%d", info->nPos );
infoPtr->CurVal = info->nPos;
}
/* 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
{
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;
else if (nBar != SB_CTL)
{
ShowScrollBar32( hwnd, nBar, FALSE );
bRedraw = FALSE; /* No need to repaint anything */
}
}
else /* Show and enable scroll-bar */
{
new_flags = 0;
if (nBar != SB_CTL) ShowScrollBar32( hwnd, nBar, TRUE );
}
if (infoPtr->flags != new_flags)
{
infoPtr->flags = new_flags;
repaint_arrows = TRUE;
}
}
if (bRedraw || repaint_arrows)
SCROLL_RefreshScrollBar( hwnd, nBar, repaint_arrows );
/* Return current position */
return infoPtr->CurVal;
}
/*************************************************************************
* GetScrollInfo16 (USER.476)
*/
BOOL16 WINAPI GetScrollInfo16( HWND16 hwnd, INT16 nBar, LPSCROLLINFO info )
{
return GetScrollInfo32( hwnd, nBar, info );
}
/*************************************************************************
* GetScrollInfo32 (USER32.283)
*/
BOOL32 WINAPI GetScrollInfo32( HWND32 hwnd, INT32 nBar, LPSCROLLINFO info )
{
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)
*/
INT32 WINAPI SetScrollPos32( HWND32 hwnd, INT32 nBar, INT32 nPos,
BOOL32 bRedraw )
{
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 (USER32.284)
*/
INT32 WINAPI GetScrollPos32( HWND32 hwnd, INT32 nBar )
{
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)
*/
BOOL32 WINAPI SetScrollRange32( HWND32 hwnd, INT32 nBar,
INT32 MinVal, INT32 MaxVal, BOOL32 bRedraw )
{
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
*
* This is for CalcChildScroll in windows/mdi.c
*/
DWORD SCROLL_SetNCSbState(WND* wndPtr, int vMin, int vMax, int vPos,
int hMin, int hMax, int hPos)
{
SCROLLBAR_INFO *infoPtr = SCROLL_GetPtrScrollInfo(wndPtr, SB_VERT);
wndPtr->dwStyle |= (WS_VSCROLL | WS_HSCROLL);
if( vMin >= vMax )
{ vMin = vMax;
wndPtr->dwStyle &= ~WS_VSCROLL; }
if( vPos > vMax ) vPos = vMax; else if( vPos < vMin ) vPos = vMin;
infoPtr->MinVal = vMin;
infoPtr->MaxVal = vMax;
infoPtr->CurVal = vPos;
infoPtr = SCROLL_GetPtrScrollInfo(wndPtr, SB_HORZ);
if( hMin >= hMax )
{ hMin = hMax;
wndPtr->dwStyle &= ~WS_HSCROLL; }
if( hPos > hMax ) hPos = hMax; else if( hPos < hMin ) hPos = hMin;
infoPtr->MinVal = hMin;
infoPtr->MaxVal = hMax;
infoPtr->CurVal = hPos;
return wndPtr->dwStyle & (WS_VSCROLL | WS_HSCROLL);
}
/*************************************************************************
* 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 (USER32.285)
*/
BOOL32 WINAPI GetScrollRange32( HWND32 hwnd, INT32 nBar,
LPINT32 lpMin, LPINT32 lpMax)
{
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;
}
/*************************************************************************
* ShowScrollBar16 (USER.267)
*/
void WINAPI ShowScrollBar16( HWND16 hwnd, INT16 nBar, BOOL16 fShow )
{
ShowScrollBar32( hwnd, nBar, fShow );
}
/*************************************************************************
* ShowScrollBar32 (USER32.531)
*/
BOOL32 WINAPI ShowScrollBar32( HWND32 hwnd, INT32 nBar, BOOL32 fShow )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return FALSE;
TRACE(scroll, "hwnd=%04x bar=%d on=%d\n",
hwnd, nBar, fShow );
switch(nBar)
{
case SB_CTL:
ShowWindow32( hwnd, fShow ? SW_SHOW : SW_HIDE );
return TRUE;
case SB_HORZ:
if (fShow)
{
if (wndPtr->dwStyle & WS_HSCROLL) return TRUE;
wndPtr->dwStyle |= WS_HSCROLL;
}
else /* hide it */
{
if (!(wndPtr->dwStyle & WS_HSCROLL)) return TRUE;
wndPtr->dwStyle &= ~WS_HSCROLL;
}
break;
case SB_VERT:
if (fShow)
{
if (wndPtr->dwStyle & WS_VSCROLL) return TRUE;
wndPtr->dwStyle |= WS_VSCROLL;
}
else /* hide it */
{
if (!(wndPtr->dwStyle & WS_VSCROLL)) return TRUE;
wndPtr->dwStyle &= ~WS_VSCROLL;
}
break;
case SB_BOTH:
if (fShow)
{
if ((wndPtr->dwStyle & WS_HSCROLL)
&& (wndPtr->dwStyle & WS_VSCROLL)) return TRUE;
wndPtr->dwStyle |= WS_HSCROLL | WS_VSCROLL;
}
else /* hide it */
{
if (!(wndPtr->dwStyle & WS_HSCROLL)
&& !(wndPtr->dwStyle & WS_VSCROLL)) return TRUE;
wndPtr->dwStyle &= ~(WS_HSCROLL | WS_VSCROLL);
}
break;
default:
return TRUE; /* Nothing to do! */
}
SetWindowPos32( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
| SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
return TRUE;
}
/*************************************************************************
* EnableScrollBar16 (USER.482)
*/
BOOL16 WINAPI EnableScrollBar16( HWND16 hwnd, INT16 nBar, UINT16 flags )
{
return EnableScrollBar32( hwnd, nBar, flags );
}
/*************************************************************************
* EnableScrollBar32 (USER32.170)
*/
BOOL32 WINAPI EnableScrollBar32( HWND32 hwnd, INT32 nBar, UINT32 flags )
{
SCROLLBAR_INFO *infoPtr;
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
TRACE(scroll, "%04x %d %d\n",
hwnd, nBar, flags );
flags &= ESB_DISABLE_BOTH;
if (infoPtr->flags == flags) return FALSE;
infoPtr->flags = flags;
/* Redraw the whole scroll bar */
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE );
return TRUE;
}
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