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/* display.h: Routines for printing the Spectrum's screen
Copyright (c) 1999-2006 Philip Kendall
$Id: display.h 4664 2012-02-12 11:51:01Z fredm $
This program 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.
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Author contact information:
E-mail: philip-fuse@shadowmagic.org.uk
*/
#ifndef FUSE_DISPLAY_H
#define FUSE_DISPLAY_H
#include <stddef.h>
#include <libspectrum.h>
/* The width and height of the Speccy's screen */
#define DISPLAY_WIDTH_COLS 32
#define DISPLAY_HEIGHT_ROWS 24
/* The width and height of the Speccy's screen */
/* Each main screen column can produce 16 pixels in hires mode */
#define DISPLAY_WIDTH ( DISPLAY_WIDTH_COLS * 16 )
/* Each main screen row can produce only 8 pixels in any mode */
#define DISPLAY_HEIGHT ( DISPLAY_HEIGHT_ROWS * 8 )
/* The width and height of the (emulated) border */
#define DISPLAY_BORDER_WIDTH_COLS 4
#define DISPLAY_BORDER_HEIGHT_COLS 3
/* The width and height of the (emulated) border */
/* Each main screen column can produce 16 pixels in hires mode */
#define DISPLAY_BORDER_WIDTH ( DISPLAY_BORDER_WIDTH_COLS * 16 )
/* Aspect corrected border width */
#define DISPLAY_BORDER_ASPECT_WIDTH ( DISPLAY_BORDER_WIDTH_COLS * 8 )
/* Each main screen row can produce only 8 pixels in any mode */
#define DISPLAY_BORDER_HEIGHT ( DISPLAY_BORDER_HEIGHT_COLS * 8 )
/* The width and height of the window we'll be displaying */
#define DISPLAY_SCREEN_WIDTH ( DISPLAY_WIDTH + 2 * DISPLAY_BORDER_WIDTH )
#define DISPLAY_SCREEN_HEIGHT ( DISPLAY_HEIGHT + 2 * DISPLAY_BORDER_HEIGHT )
/* And the width in columns */
#define DISPLAY_SCREEN_WIDTH_COLS ( DISPLAY_WIDTH_COLS + 2 * DISPLAY_BORDER_WIDTH_COLS )
/* The aspect ratio corrected display width */
#define DISPLAY_ASPECT_WIDTH ( DISPLAY_SCREEN_WIDTH / 2 )
extern int display_ui_initialised;
extern libspectrum_byte display_lores_border;
extern libspectrum_byte display_hires_border;
extern libspectrum_dword
display_last_screen[ DISPLAY_SCREEN_WIDTH_COLS * DISPLAY_SCREEN_HEIGHT ];
/* Offsets as to where the data and the attributes for each pixel
line start */
extern libspectrum_word display_line_start[ DISPLAY_HEIGHT ];
extern libspectrum_word display_attr_start[ DISPLAY_HEIGHT ];
int display_init(int *argc, char ***argv);
void display_line(void);
typedef void (*display_dirty_fn)( libspectrum_word offset );
/* Function to use to mark as 'dirty' the pixels which have been changed by a
write to 'offset' within the RAM page containing the screen */
extern display_dirty_fn display_dirty;
void display_dirty_timex( libspectrum_word offset );
void display_dirty_pentagon_16_col( libspectrum_word offset );
void display_dirty_sinclair( libspectrum_word offset );
typedef void (*display_write_if_dirty_fn)( int x, int y );
/* Function to write a dirty 8x1 chunk of pixels to the display */
extern display_write_if_dirty_fn display_write_if_dirty;
void display_write_if_dirty_timex( int x, int y );
void display_write_if_dirty_pentagon_16_col( int x, int y );
void display_write_if_dirty_sinclair( int x, int y );
typedef void (*display_dirty_flashing_fn)(void);
/* Function to dirty the pixels which are changed by virtue of having a flash
attribute */
extern display_dirty_flashing_fn display_dirty_flashing;
void display_dirty_flashing_timex(void);
void display_dirty_flashing_pentagon_16_col(void);
void display_dirty_flashing_sinclair(void);
void display_parse_attr( libspectrum_byte attr, libspectrum_byte *ink,
libspectrum_byte *paper );
void display_set_lores_border(int colour);
void display_set_hires_border(int colour);
int display_dirty_border(void);
int display_frame(void);
void display_refresh_main_screen(void);
void display_refresh_all(void);
#define display_get_addr( x, y ) \
scld_last_dec.name.altdfile ? display_line_start[(y)]+(x)+ALTDFILE_OFFSET : \
display_line_start[(y)]+(x)
int display_getpixel( int x, int y );
void display_update_critical( int x, int y );
#endif /* #ifndef FUSE_DISPLAY_H */
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