XCEngine/editor/app/Rendering/Host/EditorWindowRenderRuntime.h

#pragma once

#include "Rendering/Host/UiTextureHost.h"
#include "Rendering/Host/ViewportRenderHost.h"

#include <XCEditor/Foundation/UIEditorTextMeasurement.h>
#include <XCEngine/Rendering/RenderContext.h>
#include <XCEngine/UI/DrawData.h>

#include <cstdint>
#include <filesystem>
#include <memory>
#include <string>

namespace XCEngine::UI::Editor::Rendering::Host {

enum class EditorWindowRenderRuntimeSurfaceKind : std::uint8_t {
    Unknown = 0,
    Win32Window,
};

class EditorWindowRenderRuntimeSurface {
public:
    virtual ~EditorWindowRenderRuntimeSurface() = default;

    virtual EditorWindowRenderRuntimeSurfaceKind GetKind() const = 0;
};

struct EditorWindowRenderRuntimeInitializeParams {
    std::shared_ptr<const EditorWindowRenderRuntimeSurface> surface = {};
    std::uint32_t widthPixels = 0u;
    std::uint32_t heightPixels = 0u;

    bool IsValid() const {
        return surface != nullptr && widthPixels > 0u && heightPixels > 0u;
    }
};

struct EditorWindowRenderRuntimeInitializeResult {
    bool success = false;
    bool hasViewportSurfacePresentation = false;
    std::string errorMessage = {};
    std::string warning = {};
};

struct EditorWindowRenderRuntimeResizeResult {
    bool hasViewportSurfacePresentation = false;
    std::string warning = {};
};

struct EditorWindowRenderRuntimeFrameContext {
    bool canRenderViewports = false;
    ::XCEngine::Rendering::RenderContext renderContext = {};
    std::string warning = {};
};

struct EditorWindowRenderRuntimePresentResult {
    bool framePresented = false;
    bool captureSucceeded = false;
    std::string captureError = {};
    std::string warning = {};
};

class EditorWindowRenderRuntime {
public:
    virtual ~EditorWindowRenderRuntime() = default;

    virtual bool IsReady() const = 0;
    virtual void SetDpiScale(float dpiScale) = 0;
    virtual UIEditorTextMeasurer& GetTextMeasurer() = 0;
    virtual const UIEditorTextMeasurer& GetTextMeasurer() const = 0;
    virtual UiTextureHost& GetTextureHost() = 0;
    virtual ViewportRenderHost& GetViewportRenderHost() = 0;

    virtual EditorWindowRenderRuntimeInitializeResult Initialize(
        const EditorWindowRenderRuntimeInitializeParams& params) = 0;
    virtual void WaitForGpuIdle() = 0;
    virtual void Shutdown() = 0;
    virtual EditorWindowRenderRuntimeResizeResult ApplyResize(
        std::uint32_t width,
        std::uint32_t height) = 0;
    virtual EditorWindowRenderRuntimeFrameContext BeginFrame() = 0;
    virtual EditorWindowRenderRuntimePresentResult Present(
        const ::XCEngine::UI::UIDrawData& drawData,
        const std::filesystem::path* captureOutputPath) = 0;
};

class EditorWindowRenderRuntimeFactory {
public:
    virtual ~EditorWindowRenderRuntimeFactory() = default;

    virtual std::unique_ptr<EditorWindowRenderRuntime> CreateWindowRenderRuntime() = 0;
};

} // namespace XCEngine::UI::Editor::Rendering::Host