GuiContainer.h

#pragma once
 
#include "Resources/Resources.h"
 
#include "Platform/Instrumentation.h"
 
#include "Foundation/ComponentModel/Component.h"
#include "Foundation/Network/MessageHub.h"
 
#include "litehtml.h"
 
#include <glm/glm.hpp>
 
namespace Cogs
{
  namespace ComponentModel
  {
    class Entity;
  }
 
  namespace Core
  {
    std::shared_ptr<litehtml::element> findElement(const std::shared_ptr<litehtml::element> & e, const StringView & id);
 
    class InspectorGuiRenderer;
    struct RenderTaskContext;
 
    struct GuiContainer : public litehtml::document_container, public Network::MessageHub
    {
      litehtml::uint_ptr create_font(const litehtml::tchar_t * faceName, int size, int weight, litehtml::font_style italic, unsigned int decoration, litehtml::font_metrics * fm) override;
      void delete_font(litehtml::uint_ptr hFont) override;
      
      int pt_to_px(int pt) override;
      int text_width(const litehtml::tchar_t * text, litehtml::uint_ptr hFont) override;
 
      int get_default_font_size() const override;
      const litehtml::tchar_t * get_default_font_name() const override;
 
      void load_image(const litehtml::tchar_t * src, const litehtml::tchar_t * baseurl, bool redraw_on_ready) override;
      void get_image_size(const litehtml::tchar_t * src, const litehtml::tchar_t * baseurl, litehtml::size & sz) override;
 
      void draw_text(litehtml::uint_ptr hdc, const litehtml::tchar_t * text, litehtml::uint_ptr hFont, litehtml::web_color color, const litehtml::position & pos) override;
      void draw_background(litehtml::uint_ptr hdc, const litehtml::background_paint & bg) override;
      void draw_borders(litehtml::uint_ptr hdc, const litehtml::borders & borders, const litehtml::position & draw_pos, bool root) override;
      void draw_list_marker(litehtml::uint_ptr hdc, const litehtml::list_marker & marker) override;
 
      void set_caption(const litehtml::tchar_t * /*caption*/) override {}
      void set_base_url(const litehtml::tchar_t * /*base_url*/) override {}
      void link(const std::shared_ptr<litehtml::document> & /*doc*/, const litehtml::element::ptr & /*el*/) override {}
 
      void on_load(const std::shared_ptr<litehtml::document> & document) override;
      void on_anchor_click(const litehtml::tchar_t * url, const litehtml::element::ptr & el) override;
      void on_mouse_enter(const litehtml::element::ptr & el) override;
      void on_mouse_move(const litehtml::element::ptr & el, int x, int y) override;
      void on_mouse_leave(const litehtml::element::ptr & el) override;
      void on_click(const litehtml::element::ptr & el) override;
 
      void set_cursor(const litehtml::tchar_t * /*cursor*/) override {}
      void transform_text(litehtml::tstring & /*text*/, litehtml::text_transform /*tt*/) override {}
      void import_css(litehtml::tstring & text, const litehtml::tstring & url, litehtml::tstring & baseurl) override;
 
      void set_clip(const litehtml::position & /*pos*/, const litehtml::border_radiuses & /*bdr_radius*/, bool /*valid_x*/, bool /*valid_y*/) override {}
      void del_clip() override {}
 
      void get_client_rect(litehtml::position & client) const override;
 
      std::shared_ptr<litehtml::element> create_element(const litehtml::tchar_t * tag_name, const litehtml::string_map & attributes, const std::shared_ptr<litehtml::document>& doc) override;
 
      void get_media_features(litehtml::media_features & media) const override;
      void get_language(litehtml::tstring & /*language*/, litehtml::tstring & /*culture*/) const override {}
      void execute_script(litehtml::document * document, const litehtml::element::ptr el) override;
      void invalidate_layout(litehtml::document * document) override;
 
      void initialize(RenderTaskContext * renderContext, InspectorGuiRenderer * guiRenderer);
      bool isInitialized() const { return renderContext && inspectorGuiRenderer; }
 
      void pushState(ComponentModel::Entity * entity, glm::vec2 size);
      void popState();
 
      bool isInvalidated() const { return invalidated; }
 
      void clear();
 
    private:
      RenderTaskContext * renderContext;
      Context * context;
      InspectorGuiRenderer * inspectorGuiRenderer;
 
      ComponentModel::Entity * entity = nullptr;
      ComponentModel::ComponentHandle scriptComponent;
      glm::vec2 size;
      bool invalidated = false;
 
      std::unordered_map<size_t, Cogs::Core::TextureHandle> guiTextures;
    };
  }
}