imgui_layer_internal.h

#pragma once
 
#include "pixelbullet/core/event.h"
 
#include "pixelbullet/application/imgui/imgui_layer.h"
#include "pixelbullet/application/imgui/imgui_layer_runtime_backend_internal.h"
#include "pixelbullet/application/imgui/imgui_platform_backend_internal.h"
 
#include <array>
#include <memory>
#include <string>
 
namespace pixelbullet
{
class Graphics;
class RenderDevice;
class Window;
} // namespace pixelbullet
 
namespace pixelbullet
{
struct ImGuiLayer::Impl
{
    Impl(Window& window_in, Graphics& graphics_in);
    Impl(Window& window_in, Graphics& graphics_in, std::filesystem::path settings_path_in);
    ~Impl();
 
    void OnAttach();
    void OnDetach();
    pixelbullet::core::EventResult OnEvent(pixelbullet::core::Event& event);
 
    bool BeginUiFrame();
    void CancelUiFrame();
    bool Begin();
    void CancelFrame();
    void End(const RenderFrameContext& frame_context);
 
    ImTextureID GetTexture(const std::shared_ptr<void>& texture);
    ImTextureID GetRenderTargetTexture(std::string_view name);
    void SetAppearance(const ImGuiAppearanceConfig& appearance);
    void SetTheme();
    void SetSettingsPath(std::filesystem::path settings_path_in);
    void ClearSettings();
    void LoadSettingsFromDisk(const std::filesystem::path& settings_path_in);
    void SaveSettings();
    void SaveSettingsToDisk(const std::filesystem::path& settings_path_in);
    uint32_t GetActiveWidgetID() const;
    ImFont* GetMonospaceFont() const noexcept;
    void BlockEvents(bool block) noexcept;
 
    void ApplyAppearance(const ImGuiAppearanceConfig& appearance);
    void ApplySettingsPath();
    void RestoreMainViewportPlatformHandles();
    RenderDevice& GetRenderDevice() const;
 
    bool block_events = true;
    Window& window;
    Graphics& graphics;
    bool frame_started = false;
    bool appearance_dirty = false;
    std::unique_ptr<pixelbullet::application_internal::ImGuiLayerRuntimeBackend> runtime;
    std::unique_ptr<pixelbullet::application_internal::ImGuiPlatformBackend> platform_backend;
    ImGuiAppearanceConfig appearance_config{};
    ImFont* default_font = nullptr;
    ImFont* mono_font = nullptr;
    std::array<ImWchar, 3> icon_font_ranges{};
    std::array<ImWchar, 3> icon_font_exclude_ranges{};
    std::filesystem::path settings_path;
    std::string settings_filename;
};
} // namespace pixelbullet