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forked from aniani/vim

patch 8.2.4486: MS-Windows GUI: slow scrolling with maximized window

Problem:    MS-Windows GUI: slow scrolling with maximized window.
Solution:   Use a better way to check the window is on screen. (Ken Takata,
            closes #9865)
This commit is contained in:
Bram Moolenaar 2022-03-01 16:02:26 +00:00
parent 3e7637bd26
commit f01af9c4e6
2 changed files with 15 additions and 6 deletions

View File

@ -3016,7 +3016,7 @@ is_point_onscreen(int x, int y)
}
/*
* Check if the whole area of the specified window is on-screen.
* Check if the whole client area of the specified window is on-screen.
*
* Note about DirectX: Windows 10 1809 or above no longer maintains image of
* the window portion that is off-screen. Scrolling by DWriteContext_Scroll()
@ -3026,16 +3026,23 @@ is_point_onscreen(int x, int y)
is_window_onscreen(HWND hwnd)
{
RECT rc;
POINT p1, p2;
GetWindowRect(hwnd, &rc);
GetClientRect(hwnd, &rc);
p1.x = rc.left;
p1.y = rc.top;
p2.x = rc.right - 1;
p2.y = rc.bottom - 1;
ClientToScreen(hwnd, &p1);
ClientToScreen(hwnd, &p2);
if (!is_point_onscreen(rc.left, rc.top))
if (!is_point_onscreen(p1.x, p1.y))
return FALSE;
if (!is_point_onscreen(rc.left, rc.bottom))
if (!is_point_onscreen(p1.x, p2.y))
return FALSE;
if (!is_point_onscreen(rc.right, rc.top))
if (!is_point_onscreen(p2.x, p1.y))
return FALSE;
if (!is_point_onscreen(rc.right, rc.bottom))
if (!is_point_onscreen(p2.x, p2.y))
return FALSE;
return TRUE;
}

View File

@ -754,6 +754,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
4486,
/**/
4485,
/**/