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o3de/Gems/ImGui/Code/Include/ImGuiContextScope.h
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Steve Pham b4a2edec6a Final update copyright headers to reference license files at the repo root (#1693)
* Final update copyright headers to reference license files at the repo root

Signed-off-by: spham <spham@amazon.com>

* Fix copyright validator unit tests to support the stale O3DE header scenario

Signed-off-by: spham <spham@amazon.com>
2021-06-30 19:51:55 -07:00

44 lines
1.4 KiB
C++

/*
* Copyright (c) Contributors to the Open 3D Engine Project. For complete copyright and license terms please see the LICENSE at the root of this distribution.
*
* SPDX-License-Identifier: Apache-2.0 OR MIT
*
*/
#pragma once
struct ImGuiContext;
////////////////////////////////////////////////////////////////////////////////////////////////////
namespace ImGui
{
////////////////////////////////////////////////////////////////////////////////////////////////
//! Utility class to set a new current ImGui context on construction,
//! then reset the previous ImGui context on destruction.
class ImGuiContextScope
{
public:
////////////////////////////////////////////////////////////////////////////////////////////
explicit ImGuiContextScope([[maybe_unused]] ImGuiContext* newContext)
: m_previousContext(nullptr)
{
#if defined(IMGUI_ENABLED)
m_previousContext = ImGui::GetCurrentContext();
ImGui::SetCurrentContext(newContext);
#endif
}
////////////////////////////////////////////////////////////////////////////////////////////
~ImGuiContextScope()
{
#if defined(IMGUI_ENABLED)
ImGui::SetCurrentContext(m_previousContext);
#endif
}
private:
////////////////////////////////////////////////////////////////////////////////////////////
ImGuiContext* m_previousContext = nullptr;
};
}