imgui_layer_internal.h

#pragma once
 
#include "imgui_layer_helpers_internal.h"
 
#include "pixelbullet/application/layers/imgui_layer.h"
 
#include <map>
#include <string>
#include <vector>
 
namespace pixelbullet
{
class Graphics;
class Window;
 
struct ImGuiLayer::Impl
{
    struct CachedRenderTargetTexture
    {
        std::vector<VkDescriptorSet> descriptor_sets;
        std::vector<VkImageView> image_views;
        std::vector<VkSampler> samplers;
    };
 
    Impl(Window& window_in, Graphics& graphics_in);
    Impl(Window& window_in, Graphics& graphics_in, std::filesystem::path settings_path_in);
 
    void OnAttach();
    void OnDetach();
    EventResult OnEvent(Event& event);
 
    bool BeginUiFrame();
    void CancelUiFrame();
    bool Begin();
    void CancelFrame();
    void End(VkCommandBuffer command_buffer);
 
    ImTextureID GetImageTexture(const Image2D& image);
    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();
    bool EnsureVulkanInitialized();
    void RestoreMainViewportPlatformHandles();
    void CreateDescriptorPool(VkDevice device);
    void DestroySampledImageTextures();
    void DestroyRenderTargetTextures();
 
    bool block_events = true;
    Window& window;
    Graphics& graphics;
    VkDescriptorPool descriptor_pool = VK_NULL_HANDLE;
    VkRenderPass render_pass = VK_NULL_HANDLE;
    uint32_t image_count = 0;
    bool vulkan_initialized = false;
    bool frame_started = false;
    bool appearance_dirty = false;
    std::map<application_layers_internal::SampledImageTextureKey, VkDescriptorSet> sampled_image_textures;
    std::map<std::string, CachedRenderTargetTexture> render_target_textures;
    ImGuiAppearanceConfig appearance_config{};
    ImFont* default_font = nullptr;
    ImFont* mono_font = nullptr;
    std::filesystem::path settings_path;
    std::string settings_filename;
};
} // namespace pixelbullet