golgotha/i4/image/image.hh

/********************************************************************** <BR>
  This file is part of Crack dot Com's free source code release of
  Golgotha. <a href="http://www.crack.com/golgotha_release"> <BR> for
  information about compiling & licensing issues visit this URL</a> 
  <PRE> If that doesn't help, contact Jonathan Clark at 
  golgotha_source@usa.net (Subject should have "GOLG" in it) 
***********************************************************************/

#ifndef __I4IMAGE_HPP_
#define __I4IMAGE_HPP_


class i4_pal;
class i4_rect_list_class;
class i4_draw_context_class;

#include "arch.hh"


class i4_image_class
{  
public:
  const i4_pal *pal;
  // raw data,
  // depends on pal.pal->source.pixel_depth==(I4_32BIT,I4_16BIT,I4_8BIT,I4_4BIT,I4_2BIT)
  void *data;  
  int w, h, bpl;
  i4_bool dont_free_data;
  
  const i4_pal *get_pal() { return pal; }
  void set_pal(const i4_pal *which) { pal=which; }


  w16 width() { return w; }
  virtual w16 height() { return h; }

  // these do color conversion to & from 32bit
  virtual i4_color get_pixel(i4_coord x, i4_coord y)                                  = 0;
  virtual void put_pixel(i4_coord x, i4_coord y, w32 color)                           = 0;

  // put pixel does clipping and window offset moving and then calls put_pixel(x,y,c)
  void put_pixel(i4_coord x, i4_coord y, w32 color, i4_draw_context_class &context);
  
  w32  get_pixel(i4_coord x, i4_coord y,  i4_draw_context_class &context);

  virtual void xor_bar(i4_coord x1, i4_coord y1, 
                       i4_coord x2, i4_coord y2, 
                       i4_color xor_color, i4_draw_context_class &context);

  virtual void bar(i4_coord x1,    i4_coord y1, 
                   i4_coord x2,    i4_coord y2, 
                   i4_color color, i4_draw_context_class &context);

  virtual void line(i4_coord x1, i4_coord y1, 
                    i4_coord x2, i4_coord y2, 
                    i4_color color, i4_draw_context_class &context);

  void add_single_dirty(i4_coord x1, i4_coord y1, i4_coord x2, 
                        i4_coord y2, i4_draw_context_class &context);
  
  void add_dirty(i4_coord x1, i4_coord y1, i4_coord x2, 
                 i4_coord y2, i4_draw_context_class &context);

  
  //{ put_part :
  //  put_part transfers a rectanguar image of yourself to location x,y on image 'to'
  virtual void put_part(i4_image_class *to, 
			i4_coord x,  i4_coord y,                              
			i4_coord x1, i4_coord y1, i4_coord x2, i4_coord y2, 
                        i4_draw_context_class &context);

  virtual void put_part_trans(i4_image_class *to, 
                              i4_coord x,  i4_coord y,                                 
                              i4_coord x1, i4_coord y1, i4_coord x2, i4_coord y2,
                              i4_color trans_color, i4_draw_context_class &context);

  // copy is not expanded by the image template, it needs to be implemented per image
  virtual i4_image_class *copy();

  // Non-virtual functions, these are implemented as a convience 
  // not as a primative to be derived from
  void put_image(i4_image_class *to, i4_coord x, i4_coord y, i4_draw_context_class &context)
  { put_part(to,x,y,0,0,width()-1,height()-1,context); }

  void put_image_trans(i4_image_class *to, 
                       i4_coord x, i4_coord y, i4_color trans_color, 
                       i4_draw_context_class &context)
  { put_part_trans(to,x,y,0,0,width()-1,height()-1,trans_color,context); }

  virtual void clear(i4_color color, i4_draw_context_class &context)
  { bar(0,0,width()-1,height()-1,color,context); }

  virtual void rectangle(i4_coord x1, i4_coord y1, i4_coord x2, i4_coord y2, i4_color color, 
                         i4_draw_context_class &context);

  i4_image_class() { dont_free_data=i4_F; }
  virtual ~i4_image_class() { ; }
};

i4_image_class *i4_create_image(int width, int height, const i4_pal *pal);

i4_image_class *i4_create_image(int width, int height,
                                const i4_pal *pal,
                                void *data,
                                int bytes_per_line);

#endif