windisplay: Fix parented child window being offset

This would happen if the undecorated flag is not set; it would receive an additional offset equal to the size of the window decoration.

Fixes regression presumably caused by a968caf1d207023b2820cf4c31ae3e7324ffb218
This commit is contained in:
rdb 2021-03-11 22:19:41 +01:00
parent 576c25b3ea
commit 48fb2f721f

View File

@ -298,26 +298,28 @@ set_properties_now(WindowProperties &properties) {
// When switching undecorated mode, Windows will keep the window at the
// current outer size, whereas we want to keep it with the configured
// inner size. Store the current size and origin.
LPoint2i top_left = _properties.get_origin();
LPoint2i bottom_right = top_left + _properties.get_size();
if (_parent_window_handle == nullptr) {
LPoint2i top_left = _properties.get_origin();
LPoint2i bottom_right = top_left + _properties.get_size();
DWORD window_style = make_style(_properties);
SetWindowLong(_hWnd, GWL_STYLE, window_style);
DWORD window_style = make_style(_properties);
SetWindowLong(_hWnd, GWL_STYLE, window_style);
// Now calculate the proper size and origin with the new window style.
RECT view_rect;
SetRect(&view_rect, top_left[0], top_left[1],
bottom_right[0], bottom_right[1]);
WINDOWINFO wi;
GetWindowInfo(_hWnd, &wi);
AdjustWindowRectEx(&view_rect, wi.dwStyle, FALSE, wi.dwExStyle);
// Now calculate the proper size and origin with the new window style.
RECT view_rect;
SetRect(&view_rect, top_left[0], top_left[1],
bottom_right[0], bottom_right[1]);
WINDOWINFO wi;
GetWindowInfo(_hWnd, &wi);
AdjustWindowRectEx(&view_rect, wi.dwStyle, FALSE, wi.dwExStyle);
// We need to call this to ensure that the style change takes effect.
SetWindowPos(_hWnd, HWND_NOTOPMOST, view_rect.left, view_rect.top,
view_rect.right - view_rect.left,
view_rect.bottom - view_rect.top,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED |
SWP_NOSENDCHANGING | SWP_SHOWWINDOW);
// We need to call this to ensure that the style change takes effect.
SetWindowPos(_hWnd, HWND_NOTOPMOST, view_rect.left, view_rect.top,
view_rect.right - view_rect.left,
view_rect.bottom - view_rect.top,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED |
SWP_NOSENDCHANGING | SWP_SHOWWINDOW);
}
}
if (properties.has_title()) {