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[WIN32SS] Fix regression CORE-16721

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"Scrolling by pressing the scrollbar arrows does not draw the arrows as pressed"
Fixed by a patch of JIRA-user 'I_kill_bugs'. Thank you very much!

The regression was introduced by 0.4.11-dev-586-g
929a2c6637
(which itself aimed to fix CORE-13986,
but not CORE-13918 as erroneously stated in commit comment)

I intend to port this back into 0.4.13-RC later.
This commit is contained in:
Joachim Henze 2020-03-11 00:01:46 +01:00
parent 6bd0c70f15
commit 8bb9434d3e
2 changed files with 48 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
win32ss/user/ntuser/scrollbar.c
View file

@ -540,7 +540,6 @@ co_IntSetScrollInfo(PWND Window, INT nBar, LPCSCROLLINFO lpsi, BOOL bRedraw)
OldPos = Info->nPos;
Info->nPos = lpsi->nPos;
pSBData->pos = lpsi->nPos;
bChangeParams = TRUE;
}
}
@ -614,11 +613,15 @@ co_IntSetScrollInfo(PWND Window, INT nBar, LPCSCROLLINFO lpsi, BOOL bRedraw)
else /* Show and enable scroll-bar only if no page only changed. */
if (lpsi->fMask != SIF_PAGE)
{
new_flags = ESB_ENABLE_BOTH;
if ((nBar != SB_CTL) && bChangeParams)
{
new_flags = ESB_ENABLE_BOTH;
action |= SA_SSI_SHOW;
}
else if (nBar == SB_CTL)
{
new_flags = ESB_ENABLE_BOTH;
}
}
if (Window->pSBInfo->WSBflags != new_flags) /* Check arrow flags */

52
win32ss/user/user32/controls/scrollbar.c
View file

@ -318,6 +318,26 @@ IntGetScrollBarInfo(HWND Wnd, INT Bar, PSCROLLBARINFO ScrollBarInfo)
return NtUserGetScrollBarInfo(Wnd, IntScrollGetObjectId(Bar), ScrollBarInfo);
}
static VOID FASTCALL
IntUpdateScrollArrows(HWND Wnd, HDC hDC, PSCROLLBARINFO ScrollBarInfo,
SETSCROLLBARINFO *info, INT SBType, INT Arrow,
BOOL Vertical, BOOL Pressed)
{
if (Pressed)
{
ScrollBarInfo->rgstate[Arrow] |= STATE_SYSTEM_PRESSED;
}
else
{
ScrollBarInfo->rgstate[Arrow] &= ~STATE_SYSTEM_PRESSED;
}
/* Update arrow state */
info->rgstate[Arrow] = ScrollBarInfo->rgstate[Arrow];
NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), info);
IntDrawScrollArrows(hDC, ScrollBarInfo, Vertical);
}
void
IntDrawScrollBar(HWND Wnd, HDC DC, INT Bar)
{
@ -834,9 +854,7 @@ IntScrollHandleScrollEvent(HWND Wnd, INT SBType, UINT Msg, POINT Pt)
/* Don't update scrollbar if disabled. */
if (ScrollBarInfo.rgstate[ScrollTrackHitTest] != STATE_SYSTEM_UNAVAILABLE)
{
ScrollBarInfo.rgstate[ScrollTrackHitTest] |= STATE_SYSTEM_PRESSED;
NewInfo.rgstate[ScrollTrackHitTest] = ScrollBarInfo.rgstate[ScrollTrackHitTest];
NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), &NewInfo);
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, TRUE);
}
break;
@ -853,12 +871,8 @@ IntScrollHandleScrollEvent(HWND Wnd, INT SBType, UINT Msg, POINT Pt)
/* Don't update scrollbar if disabled. */
if (ScrollBarInfo.rgstate[ScrollTrackHitTest] != STATE_SYSTEM_UNAVAILABLE)
{
ScrollBarInfo.rgstate[ScrollTrackHitTest] &= ~STATE_SYSTEM_PRESSED;
NewInfo.rgstate[ScrollTrackHitTest] = ScrollBarInfo.rgstate[ScrollTrackHitTest];
NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), &NewInfo);
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, FALSE);
IntDrawScrollInterior(Wnd,Dc,SBType,Vertical,&ScrollBarInfo);
IntDrawScrollArrows(Dc, &ScrollBarInfo, Vertical);
}
break;
@ -890,9 +904,17 @@ IntScrollHandleScrollEvent(HWND Wnd, INT SBType, UINT Msg, POINT Pt)
SetSystemTimer(Wnd, SCROLL_TIMER, (WM_LBUTTONDOWN == Msg) ?
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
(TIMERPROC) NULL);
if (ScrollBarInfo.rgstate[ScrollTrackHitTest] != STATE_SYSTEM_UNAVAILABLE)
{
if (!(ScrollBarInfo.rgstate[ScrollTrackHitTest] &= STATE_SYSTEM_PRESSED))
{
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, TRUE);
}
}
}
else
{
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, FALSE);
KillSystemTimer(Wnd, SCROLL_TIMER);
}
break;
@ -992,8 +1014,20 @@ IntScrollHandleScrollEvent(HWND Wnd, INT SBType, UINT Msg, POINT Pt)
SetSystemTimer(Wnd, SCROLL_TIMER, (WM_LBUTTONDOWN == Msg) ?
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
(TIMERPROC) NULL);
if (ScrollBarInfo.rgstate[ScrollTrackHitTest] != STATE_SYSTEM_UNAVAILABLE)
{
if (!(ScrollBarInfo.rgstate[ScrollTrackHitTest] &= STATE_SYSTEM_PRESSED))
{
TRACE("Set Arrow\n");
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, TRUE);
}
}
}
else KillSystemTimer(Wnd, SCROLL_TIMER);
else
{
IntUpdateScrollArrows (Wnd, Dc, &ScrollBarInfo, &NewInfo, SBType, ScrollTrackHitTest, Vertical, FALSE);
KillSystemTimer(Wnd, SCROLL_TIMER);
}
break;
}