// FontImp.cc for FbTk
// Copyright (c) 2002-2004 Henrik Kinnunen (fluxgen at fluxbox dot org)
// 
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

#ifndef FBTK_FONTIMP_HH
#define FBTK_FONTIMP_HH

#include "Orientation.hh"
#include "FbString.hh"

#include <X11/Xlib.h>

namespace FbTk {

class FbDrawable;

/**
   FontImp, second part of the bridge pattern for fonts
   pure interface class.
   @see Font
*/
class FontImp {
public:
    virtual ~FontImp() { }
    virtual bool load(const std::string &name) = 0;
    virtual void drawText(const FbDrawable &w, int screen, GC gc, const char* text, size_t len, int x, int y, FbTk::Orientation orient) = 0;
    virtual unsigned int textWidth(const char* text, unsigned int len) const = 0;
    virtual bool validOrientation(FbTk::Orientation orient) { return orient == ROT0; }
    virtual int ascent() const = 0;
    virtual int descent() const = 0;
    virtual unsigned int height() const = 0;
    virtual bool loaded() const = 0;
    virtual void rotate(FbTk::Orientation angle) { } // by default, no rotate support
    virtual bool utf8() const { return false; };
protected:
    FontImp() { }
};

} // end namespace FbTk

#endif // FBTK_FONTIMP_HH