PlatformFont_RTL.h

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//* -*- mode:C++; tab-width:4; c-basic-offset:4; indent-tabs-mode:nil -*- */
//    Name:       src/platforms/sdl/PlatformFont.h
//    Purpose:    Contains platform-specific font class.
//    Author:     Shane T. Mueller, Ph.D.
//    Copyright:  (c) 2003-2026 Shane T. Mueller <smueller@obereed.net>
//    License:    GPL 2
//
//
//
//     This file is part of the PEBL project.
//
//    PEBL is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    PEBL is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with PEBL; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#ifndef __PLATFORMFONT_H__
#define __PLATFORMFONT_H__
 
#include "../../objects/PFont.h"
#include "../../objects/PColor.h"
#include "../../utility/rc_ptrs.h"
#include "../../base/PEBLObject.h"
 
#include "SDLUtility.h"
 
 
#ifdef PEBL_OSX
#include "SDL.h"
#include "SDL_ttf.h"
#else
#include "SDL.h"
#include "SDL_ttf.h"
#endif
 
 
//This is a modified platform font that attempts to use harfbuzz renderer
//to support RTL and other craziness
 
 
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_OUTLINE_H 
#include <harfbuzz/hb.h>
#include <harfbuzz/hb-ft.h>
 
 
 
 
class PlatformFont:  virtual public PFont
{
    
public:
    //    PlatformFont();
    PlatformFont(const std::string &  filename);
    PlatformFont(const std::string &  filename, int style, int size, PColor fgcolor, PColor bgcolor, bool aa);
    PlatformFont(PlatformFont & font);              
    virtual ~PlatformFont();
 
    virtual void SetFontColor        (PColor color);
    virtual void SetBackgroundColor  (PColor color);
//     virtual PColor GetFontColor      () const {return SDLUtility::SDLColorToPColor(mSDL_FGColor);}
//     virtual PColor GetBackgroundColor() const {return SDLUtility::SDLColorToPColor(mSDL_BGColor);}
 
    //SDL_Texture * DrawTextHB(const std::wstring & text);
    SDL_Texture * RenderTexture(const std::wstring & text);
    SDL_Texture * RenderText(const std::wstring & text);
    
    unsigned int GetTextWidth(const std::string & text);
    unsigned int GetTextHeight(const std::string & text);
    unsigned int GetPosition(const std::string & text, unsigned int x);
    virtual std::string ObjectName() const{return "Platform Font";};
 
protected:
    virtual std::ostream & SendToStream(std::ostream& out) const;
 
private:
    
    std::string StripText(const std::string & text);
 
    char* mBuffer;  //buffer to hold font cached memory.
    FT_Library * mLibrary;// FT library reference
    //TTF_Font * mTTF_Font;
    FT_Face * mFace;       //freetype face
    bh_font_t * mHBFont;   //harfbuzz font
    
    SDL_Color mSDL_FGColor;
    SDL_Color mSDL_BGColor;  
};
 
 
#endif