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fix: ensure that the "top" coordinate of the inner frame is correct #20053

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merged 1 commit into from Aug 31, 2019
Merged

fix: ensure that the "top" coordinate of the inner frame is correct #20053

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15 changes: 14 additions & 1 deletion shell/browser/native_window_views_win.cc
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Expand Up @@ -389,8 +389,21 @@ bool NativeWindowViews::PreHandleMSG(UINT message,
// https://blogs.msdn.microsoft.com/wpfsdk/2008/09/08/custom-window-chrome-in-wpf/
DefWindowProcW(GetAcceleratedWidget(), WM_NCCALCSIZE, w_param, l_param);

// When fullscreen the window has no border
int border = 0;
if (!IsFullscreen()) {
// When not fullscreen calculate the border size
border = GetSystemMetrics(SM_CXFRAME) +
GetSystemMetrics(SM_CXPADDEDBORDER);
if (!thick_frame_) {
border -= GetSystemMetrics(SM_CXBORDER);
}
}

if (last_window_state_ == ui::SHOW_STATE_MAXIMIZED) {
params->rgrc[0].top = 0;
// Position the top of the frame offset from where windows thinks by
// exactly the border amount. When fullscreen this is 0.
params->rgrc[0].top = PROPOSED.top + border;
} else {
params->rgrc[0] = PROPOSED;
params->rgrc[1] = BEFORE;
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