Detailed Description

Traits class to enable custom Color construction.

This enables using user types (usaually enums) to be used as Color with ColorString or ColorStream classes:

enum ColorContext { Red, Green, Blue };
 
cout << "default"
     << ( ColorContext::Green << "green"
                              << ColorContext::Red << "switch to red"
                              << ( ColorContext::Blue << "blue" )
                              << "still red" )
     << "default" << endl;

You need to define a function ansi::Color customColorCtor( EnumType enum_r ) which associates enum value and Color:

ansi::Color customColorCtor( ColorContext ctxt_r )

{ return Color associated with each enum value }

Then specailize ColorTraits for your enum to enable using it as ColorStream

namespace ansi
{
  template<>
  struct ColorTraits<ColorContext>
  { enum { customColorCtor = true }; };
}

This will enable your enum being impicitly converted into ansi::Color, especially when used together with ColorString and ColorStream. Printing your enum on a stream, will also print the associated colors SGR sequence:

// provided via ColorTraits:
std::ostream & operator<<( std::ostream & str, ColorContext obj )
{ return str << ansi::Color( obj ); }

The documentation for this class was generated from the following file:

zypp-tui/utils/ansi.h