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comctl32/pager: Prevent excessive PGN_CALCSIZE notifications during PGM_SETCHILD. 

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Nikolay Sivov 2017-04-21 13:16:02 +03:00 committed by Alexandre Julliard
parent 299ded6091
commit 48c4edd9ba
2 changed files with 14 additions and 13 deletions
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21
dlls/comctl32/pager.c
View File

@ -271,7 +271,7 @@ PAGER_PositionChildWnd(PAGER_INFO* infoPtr)
}
static INT
PAGER_GetScrollRange(PAGER_INFO* infoPtr)
PAGER_GetScrollRange(PAGER_INFO* infoPtr, BOOL calc_size)
{
INT scrollRange = 0;
@ -281,7 +281,8 @@ PAGER_GetScrollRange(PAGER_INFO* infoPtr)
RECT wndRect;
GetWindowRect(infoPtr->hwndSelf, &wndRect);
PAGER_CalcSize(infoPtr);
if (calc_size)
PAGER_CalcSize(infoPtr);
if (infoPtr->dwStyle & PGS_HORZ)
{
wndSize = wndRect.right - wndRect.left;
@ -362,9 +363,9 @@ PAGER_UpdateBtns(PAGER_INFO *infoPtr, INT scrollRange, BOOL hideGrayBtns)
}
static LRESULT
PAGER_SetPos(PAGER_INFO* infoPtr, INT newPos, BOOL fromBtnPress)
PAGER_SetPos(PAGER_INFO* infoPtr, INT newPos, BOOL fromBtnPress, BOOL calc_size)
{
INT scrollRange = PAGER_GetScrollRange(infoPtr);
INT scrollRange = PAGER_GetScrollRange(infoPtr, calc_size);
INT oldPos = infoPtr->nPos;
if ((scrollRange <= 0) || (newPos < 0))
@ -405,12 +406,12 @@ PAGER_RecalcSize(PAGER_INFO *infoPtr)
if (infoPtr->hwndChild)
{
INT scrollRange = PAGER_GetScrollRange(infoPtr);
INT scrollRange = PAGER_GetScrollRange(infoPtr, TRUE);
if (scrollRange <= 0)
{
infoPtr->nPos = -1;
PAGER_SetPos(infoPtr, 0, FALSE);
PAGER_SetPos(infoPtr, 0, FALSE, TRUE);
}
else
PAGER_PositionChildWnd(infoPtr);
@ -480,7 +481,7 @@ PAGER_SetChild (PAGER_INFO* infoPtr, HWND hwndChild)
SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE);
infoPtr->nPos = -1;
PAGER_SetPos(infoPtr, 0, FALSE);
PAGER_SetPos(infoPtr, 0, FALSE, FALSE);
}
return 0;
@ -525,9 +526,9 @@ PAGER_Scroll(PAGER_INFO* infoPtr, INT dir)
infoPtr->direction = dir;
if (dir == PGF_SCROLLLEFT || dir == PGF_SCROLLUP)
PAGER_SetPos(infoPtr, infoPtr->nPos - nmpgScroll.iScroll, TRUE);
PAGER_SetPos(infoPtr, infoPtr->nPos - nmpgScroll.iScroll, TRUE, TRUE);
else
PAGER_SetPos(infoPtr, infoPtr->nPos + nmpgScroll.iScroll, TRUE);
PAGER_SetPos(infoPtr, infoPtr->nPos + nmpgScroll.iScroll, TRUE, TRUE);
}
else
infoPtr->direction = -1;
@ -1047,7 +1048,7 @@ PAGER_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
return PAGER_SetChild (infoPtr, (HWND)lParam);
case PGM_SETPOS:
return PAGER_SetPos(infoPtr, (INT)lParam, FALSE);
return PAGER_SetPos(infoPtr, (INT)lParam, FALSE, TRUE);
case WM_CREATE:
return PAGER_Create (hwnd, (LPCREATESTRUCTW)lParam);

6
dlls/comctl32/tests/pager.c
View File

@ -272,14 +272,14 @@ static void test_pager(void)
flush_sequences( sequences, NUM_MSG_SEQUENCES );
SendMessageA( pager, PGM_SETCHILD, 0, (LPARAM)child1_wnd );
ok_sequence(sequences, PAGER_SEQ_INDEX, set_child_seq, "set child", TRUE);
ok_sequence(sequences, PAGER_SEQ_INDEX, set_child_seq, "set child", FALSE);
GetWindowRect( pager, &rect );
ok( rect.right - rect.left == 100 && rect.bottom - rect.top == 100,
"pager resized %dx%d\n", rect.right - rect.left, rect.bottom - rect.top );
flush_sequences(sequences, NUM_MSG_SEQUENCES);
SendMessageA(pager, PGM_SETCHILD, 0, (LPARAM)child2_wnd);
ok_sequence(sequences, PAGER_SEQ_INDEX, switch_child_seq, "switch to invisible child", TRUE);
ok_sequence(sequences, PAGER_SEQ_INDEX, switch_child_seq, "switch to invisible child", FALSE);
GetWindowRect(pager, &rect);
ok(rect.right - rect.left == 100 && rect.bottom - rect.top == 100,
"pager resized %dx%d\n", rect.right - rect.left, rect.bottom - rect.top);
@ -287,7 +287,7 @@ static void test_pager(void)
flush_sequences(sequences, NUM_MSG_SEQUENCES);
SendMessageA(pager, PGM_SETCHILD, 0, (LPARAM)child1_wnd);
ok_sequence(sequences, PAGER_SEQ_INDEX, set_child_seq, "switch to visible child", TRUE);
ok_sequence(sequences, PAGER_SEQ_INDEX, set_child_seq, "switch to visible child", FALSE);
GetWindowRect(pager, &rect);
ok(rect.right - rect.left == 100 && rect.bottom - rect.top == 100,
"pager resized %dx%d\n", rect.right - rect.left, rect.bottom - rect.top);