link_label.h

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#pragma once
#include <any>
#include <tuple>
#include <xtd/drawing/system_colors.h>
#include "cursors.h"
#include "label.h"
#include "link.h"
#include "link_label_clicked_event_handler.h"
 
namespace xtd {
  namespace forms {
    class link_label : public label {
    public:
      using link = xtd::forms::link;
      
      class link_collection : public xtd::forms::layout::arranged_element_collection<xtd::forms::link_label::link> {
      public:
        using base = xtd::forms::layout::arranged_element_collection<xtd::forms::link_label::link>;
        
        explicit link_collection(const allocator_type& allocator = allocator_type());
        link_collection(const base& collection);
        link_collection(const link_collection& collection);
        link_collection& operator=(const link_collection& collection);
        link_collection(link_collection&&) = default;
        
        using base::operator[];
        const_reference operator[](const xtd::ustring& name) const;
        reference operator[](const xtd::ustring& name);
 
      private:
       inline static value_type empty_;
      };
 
      link_label();
      
      const xtd::drawing::color& active_link_color() const;
      link_label& active_link_color(const xtd::drawing::color& color);
      
      const xtd::drawing::color& disabled_link_color() const;
      link_label& disabled_link_color(const xtd::drawing::color& color);
      
      const xtd::drawing::color& link_color() const;
      link_label& link_color(const xtd::drawing::color& color);
      
      const link_collection& links() const;
      link_collection& links();
      
      const xtd::drawing::color& visited_link_color() const;
      link_label& visited_link_color(const xtd::drawing::color& color);
      
      event<link_label, link_label_clicked_event_handler> link_clicked;
 
    protected:
      xtd::drawing::size measure_control() const override;
      
      void on_cursor_changed(const xtd::event_args& e) override;
      void on_mouse_click(const xtd::forms::mouse_event_args& e) override;
      void on_mouse_down(const xtd::forms::mouse_event_args& e) override;
      void on_mouse_up(const xtd::forms::mouse_event_args& e) override;
      void on_mouse_move(const xtd::forms::mouse_event_args& e) override;
      void on_paint(xtd::forms::paint_event_args& e) override;
      void on_text_align_changed(const xtd::event_args& e) override;
      void on_text_changed(const xtd::event_args& e) override;
      
      link_label::link& point_in_link(const xtd::drawing::point& point);
 
    private:
      xtd::drawing::point get_text_location(size_t line) const;
      std::vector<std::tuple<xtd::drawing::rectangle, bool>> generate_text_rects() const;
      xtd::drawing::font link_font() const;
      bool mouse_hover_ = false;
      xtd::drawing::color active_link_color_;
      xtd::drawing::color disabled_link_color_;
      xtd::drawing::color link_color_;
      link_collection links_;
      xtd::forms::cursor original_cursor_;
      xtd::forms::cursor override_cursor_;
      xtd::drawing::color visited_link_color_;
      inline static link link_empty_;
    };
  }
}