/*
 * Copyright 2010 Inalogic® Inc.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License, as
 * published by the  Free Software Foundation; either version 2.1 or 3.0
 * of the License.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranties of
 * MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the applicable version of the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of both the GNU Lesser General Public
 * License along with this program. If not, see <http://www.gnu.org/licenses/>
 *
 * Authored by: Jay Taoko <jaytaoko@inalogic.com>
 *
 */


#ifndef FONTRENDERER_H
#define FONTRENDERER_H

#include "GLResource.h"

class IOpenGLPixelShader;

namespace nux
{

  class GraphicsEngine;
  class TextureRectangle;
  class ICgPixelShader;
  class ICgVertexShader;
  class TemplateQuadBuffer;
  class FontTexture;

  class FontRenderer
  {
  public:
    FontRenderer (GraphicsEngine &OpenGLEngine);
    ~FontRenderer();

    int DrawColorString (ObjectPtr<FontTexture> Font, int x, int y, const NString &str, const Color &color, bool WriteAlphaChannel, int NumCharacter = 0, int SkipFirstNCharacters = 0);
    void PositionString (ObjectPtr<FontTexture> Font, const NString &str, const PageBBox &, StringBBox &, TextAlignment align = eAlignTextCenter, int NumCharacter = 0);
    int RenderColorText (ObjectPtr<FontTexture> Font, int x, int y, const NString &Str, const Color &color, bool WriteAlphaChannel, int NumCharacter);
    int RenderColorTextLineStatic (ObjectPtr<FontTexture> Font, const PageBBox &pageSize, const NString &Str, const Color &color,
                                   bool WriteAlphaChannel, TextAlignment alignment);
    int RenderColorTextLineEdit (ObjectPtr<FontTexture> Font, const PageBBox &pageSize, const NString &Str,
                                 const Color &TextColor,
                                 bool WriteAlphaChannel,
                                 const Color &SelectedTextColor,
                                 const Color &SelectedTextBackgroundColor,
                                 const Color &TextBlinkColor,
                                 const Color &CursorColor,
                                 bool ShowCursor, unsigned int CursorPosition,
                                 int offset = 0, int selection_start = 0, int selection_end = 0);

    int RenderText (ObjectPtr<FontTexture> Font, int x, int y, const NString &str, const Color &color, bool WriteAlphaChannel, int StartCharacter = 0, int NumCharacters = 0);
    int RenderTextToBuffer (
      float *VertexBuffer, int VBSize,
      ObjectPtr<FontTexture> Font, Rect geo, const NString &str, const Color &color, TextAlignment alignment = eAlignTextCenter, int NumCharacter = 0);

  private:
    GraphicsEngine& _graphics_engine;
    ObjectPtr<IOpenGLPixelShader> _pixel_shader_prog;
    ObjectPtr<IOpenGLVertexShader> _vertex_shader_prog;
    ObjectPtr<IOpenGLShaderProgram> _shader_prog;

    //ObjectPtr<IOpenGLAsmPixelShader> m_AsmPixelShaderProg;
    //ObjectPtr<IOpenGLAsmVertexShader> m_AsmVertexShaderProg;
    ObjectPtr<IOpenGLAsmShaderProgram> _asm_shader_prog;

    ObjectPtr<IOpenGLAsmShaderProgram> _asm_font_texture_rect_prog;
  };

}

#endif //FONTRENDERER_H