Method GetPopupAllowedExtentRect

Dependencies/ImGui/src/imgui.cpp:13370–13389

Note that this is used for popups, which can overlap the non work-area of individual viewports.

// Note that this is used for popups, which can overlap the non work-area of individual viewports.
ImRect ImGui::GetPopupAllowedExtentRect(ImGuiWindow* window)
{
    ImGuiContext& g = *GImGui;
    ImRect r_screen;
    if (window->ViewportAllowPlatformMonitorExtend >= 0)
    {
        // Extent with be in the frame of reference of the given viewport (so Min is likely to be negative here)
        const ImGuiPlatformMonitor& monitor = g.PlatformIO.Monitors[window->ViewportAllowPlatformMonitorExtend];
        r_screen.Min = monitor.WorkPos;
        r_screen.Max = monitor.WorkPos + monitor.WorkSize;
    }
    else
    {
        // Use the full viewport area (not work area) for popups
        r_screen = window->Viewport->GetMainRect();
    }
    ImVec2 padding = g.Style.DisplaySafeAreaPadding;
    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
    return r_screen;
}

ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
{