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)
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@ -3016,7 +3016,7 @@ is_point_onscreen(int x, int y)
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}
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/*
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* Check if the whole area of the specified window is on-screen.
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* Check if the whole client area of the specified window is on-screen.
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*
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* Note about DirectX: Windows 10 1809 or above no longer maintains image of
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* the window portion that is off-screen. Scrolling by DWriteContext_Scroll()
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@ -3026,16 +3026,23 @@ is_point_onscreen(int x, int y)
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is_window_onscreen(HWND hwnd)
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{
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RECT rc;
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POINT p1, p2;
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GetWindowRect(hwnd, &rc);
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GetClientRect(hwnd, &rc);
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p1.x = rc.left;
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p1.y = rc.top;
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p2.x = rc.right - 1;
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p2.y = rc.bottom - 1;
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ClientToScreen(hwnd, &p1);
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ClientToScreen(hwnd, &p2);
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if (!is_point_onscreen(rc.left, rc.top))
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if (!is_point_onscreen(p1.x, p1.y))
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return FALSE;
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if (!is_point_onscreen(rc.left, rc.bottom))
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if (!is_point_onscreen(p1.x, p2.y))
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return FALSE;
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if (!is_point_onscreen(rc.right, rc.top))
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if (!is_point_onscreen(p2.x, p1.y))
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return FALSE;
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if (!is_point_onscreen(rc.right, rc.bottom))
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if (!is_point_onscreen(p2.x, p2.y))
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return FALSE;
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return TRUE;
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}
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@ -754,6 +754,8 @@ static char *(features[]) =
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static int included_patches[] =
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{ /* Add new patch number below this line */
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/**/
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4486,
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/**/
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4485,
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/**/
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