system_images.h

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#pragma once
#include <map>
#include <xtd/static.h>
#include "../drawing_export.h"
#include "bitmap.h"
#include "size.h"
 
namespace xtd {
  namespace drawing {
    class system_icons;
 
    class drawing_export_ system_images final static_ {
    public:
      static xtd::drawing::size default_size() {return {32, 32};}
      static xtd::drawing::image image_loading() {return image_loading(default_size());}
      static xtd::drawing::image image_loading(const xtd::drawing::size& size) {return system_images::from_name("image-loading", size);}
      static xtd::drawing::image image_missing() {return image_missing(default_size());}
      static xtd::drawing::image image_missing(const xtd::drawing::size& size) {return from_name("image-missing", size);}
 
      static xtd::drawing::image from_name(const xtd::ustring& name) {return from_name(default_theme(), name, default_size());}
      static xtd::drawing::image from_name(const xtd::ustring& name, const xtd::drawing::size& size) {return from_name(default_theme(), name, size);}
      static xtd::drawing::image from_name(const xtd::ustring& theme, const xtd::ustring& name) {return from_name(theme, name, default_size());}
      static xtd::drawing::image from_name(const xtd::ustring& theme, const xtd::ustring& name, const xtd::drawing::size& size);
 
      static std::vector<xtd::ustring> contexts();
      static std::map<xtd::ustring, std::vector<xtd::ustring>> context_names();
      static std::vector<xtd::ustring> names();
      static std::vector<xtd::ustring> names(const xtd::ustring& context) {return context_names()[context];}
      static std::vector<xtd::drawing::size> sizes();
      
    private:
      friend class system_icons;
      static xtd::ustring default_theme();
      static xtd::ustring fallback_theme();
      static std::vector<xtd::ustring> themes();
    };
  }
}