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125 lines
4.8 KiB
C++
125 lines
4.8 KiB
C++
/*
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* 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.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#include "ImguiAtomSystemComponent.h"
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#include <AzCore/Serialization/SerializeContext.h>
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#include <AzFramework/Windowing/WindowBus.h>
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#include <Atom/Feature/ImGui/ImGuiUtils.h>
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#include <Atom/Feature/ImGui/SystemBus.h>
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#include <Atom/RPI.Public/ViewportContext.h>
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#if defined(IMGUI_ENABLED)
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#include <ImGuiBus.h>
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#endif
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namespace AZ
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{
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namespace LYIntegration
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{
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void ImguiAtomSystemComponent::Reflect(AZ::ReflectContext* context)
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{
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if (auto* serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
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{
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serializeContext->Class<ImguiAtomSystemComponent, AZ::Component>()
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->Version(0)
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;
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}
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}
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void ImguiAtomSystemComponent::GetProvidedServices(AZ::ComponentDescriptor::DependencyArrayType& provided)
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{
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provided.push_back(AZ_CRC_CE("ImguiAtomSystemComponent"));
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}
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void ImguiAtomSystemComponent::GetRequiredServices(AZ::ComponentDescriptor::DependencyArrayType& required)
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{
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required.push_back(AZ_CRC_CE("CommonService"));
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}
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void ImguiAtomSystemComponent::GetIncompatibleServices(AZ::ComponentDescriptor::DependencyArrayType& incompatbile)
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{
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incompatbile.push_back(AZ_CRC_CE("ImguiAtomSystemComponent"));
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}
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void ImguiAtomSystemComponent::Activate()
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{
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ImGui::OtherActiveImGuiRequestBus::Handler::BusConnect();
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auto atomViewportRequests = AZ::Interface<AZ::RPI::ViewportContextRequestsInterface>::Get();
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const AZ::Name contextName = atomViewportRequests->GetDefaultViewportContextName();
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AZ::RPI::ViewportContextNotificationBus::Handler::BusConnect(contextName);
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m_initialized = false;
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InitializeViewportSizeIfNeeded();
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}
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void ImguiAtomSystemComponent::Deactivate()
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{
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ImGui::OtherActiveImGuiRequestBus::Handler::BusDisconnect();
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AZ::RPI::ViewportContextNotificationBus::Handler::BusDisconnect();
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}
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void ImguiAtomSystemComponent::InitializeViewportSizeIfNeeded()
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{
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#if defined(IMGUI_ENABLED)
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if (m_initialized)
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{
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return;
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}
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auto atomViewportRequests = AZ::Interface<AZ::RPI::ViewportContextRequestsInterface>::Get();
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auto defaultViewportContext = atomViewportRequests->GetDefaultViewportContext();
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if (defaultViewportContext)
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{
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// If this succeeds, m_initialized will be set to true.
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OnViewportSizeChanged(defaultViewportContext->GetViewportSize());
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}
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#endif
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}
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void ImguiAtomSystemComponent::RenderImGuiBuffers(const ImDrawData& drawData)
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{
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Render::ImGuiSystemRequestBus::Broadcast(&Render::ImGuiSystemRequests::RenderImGuiBuffersToCurrentViewport, drawData);
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}
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void ImguiAtomSystemComponent::OnRenderTick()
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{
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#if defined(IMGUI_ENABLED)
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InitializeViewportSizeIfNeeded();
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ImGui::ImGuiManagerBus::Broadcast(&ImGui::IImGuiManager::Render);
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#endif
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}
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void ImguiAtomSystemComponent::OnViewportSizeChanged([[maybe_unused]] AzFramework::WindowSize size)
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{
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#if defined(IMGUI_ENABLED)
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ImGui::ImGuiManagerBus::Broadcast([this, size](ImGui::ImGuiManagerBus::Events* imgui)
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{
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imgui->OverrideRenderWindowSize(size.m_width, size.m_height);
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// ImGuiManagerListenerBus may not have been connected when this system component is activated
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// as ImGuiManager is not part of a system component we can require and instead just listens for ESYSTEM_EVENT_GAME_POST_INIT.
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// Let our ImguiAtomSystemComponent know once we successfully connect and update the viewport size.
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if (!m_initialized)
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{
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auto atomViewportRequests = AZ::Interface<AZ::RPI::ViewportContextRequestsInterface>::Get();
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auto defaultViewportContext = atomViewportRequests->GetDefaultViewportContext();
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OnViewportDpiScalingChanged(defaultViewportContext->GetDpiScalingFactor());
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m_initialized = true;
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}
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});
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#endif //define(IMGUI_ENABLED)
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}
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void ImguiAtomSystemComponent::OnViewportDpiScalingChanged(float dpiScale)
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{
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#if defined(IMGUI_ENABLED)
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ImGui::ImGuiManagerBus::Broadcast(&ImGui::ImGuiManagerBus::Events::SetDpiScalingFactor, dpiScale);
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#endif //define(IMGUI_ENABLED)
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}
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}
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}
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