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/* $XTermId: graphics.h,v 1.29 2022/02/22 23:36:19 tom Exp $ */
/*
* Copyright 2013-2016,2022 by Ross Combs
* Copyright 2013-2016,2022 by Thomas E. Dickey
*
* All Rights Reserved
*
* 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 ABOVE LISTED COPYRIGHT HOLDER(S) 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.
*
* Except as contained in this notice, the name(s) of the above copyright
* holders shall not be used in advertising or otherwise to promote the
* sale, use or other dealings in this Software without prior written
* authorization.
*/
#ifndef included_graphics_h
#define included_graphics_h
/* *INDENT-OFF* */
#include <ptyx.h>
#if OPT_GRAPHICS
#define CHANNEL_MAX 100
typedef struct {
short r, g, b;
} ColorRegister;
typedef unsigned short RegisterNum;
#define MAX_COLOR_REGISTERS 0x400 /* 1024U */
#define COLOR_HOLE 0x404 /* bytable above MAX_COLOR_REGISTERS */
#define MAX_GRAPHICS 16U
#define ClrSpixel(graphic, cell) \
do { \
(graphic)->pixels[cell] = COLOR_HOLE; \
} while (0)
#define SetSpixel(graphic, cell, value) \
do { \
(graphic)->pixels[cell] = value; \
} while (0)
typedef struct {
RegisterNum *pixels;
ColorRegister *private_color_registers;
ColorRegister *color_registers;
char color_registers_used[MAX_COLOR_REGISTERS];
XtermWidget xw;
int max_width; /* largest image which can be stored */
int max_height; /* largest image which can be stored */
unsigned valid_registers; /* for wrap-around behavior */
int actual_width; /* size of image before scaling */
int actual_height; /* size of image before scaling */
int private_colors; /* if not using the shared color registers */
int charrow; /* upper left starting point in characters */
int charcol; /* upper left starting point in characters */
int pixw; /* width of graphic pixels in screen pixels */
int pixh; /* height of graphic pixels in screen pixels */
int bufferid; /* which screen buffer the graphic is associated with */
unsigned type; /* type of graphic 0==sixel, 1...NUM_REGIS_PAGES==ReGIS page */
unsigned id; /* sequential id used for preserving layering */
Boolean valid; /* if the graphic has been initialized */
Boolean dirty; /* if the graphic needs to be redrawn */
Boolean hidden; /* if the graphic should not be displayed */
} Graphic;
extern Graphic *get_new_graphic(XtermWidget /* xw */, int /* charrow */, int /* charcol */, unsigned /* type */);
extern Graphic *get_new_or_matching_graphic(XtermWidget /* xw */, int /* charrow */, int /* charcol */, int /* actual_width */, int /* actual_height */, unsigned /* type */);
extern RegisterNum read_pixel(Graphic */* graphic */, int /* x */, int /* y */);
extern void draw_solid_pixel(Graphic */* graphic */, int /* x */, int /* y */, unsigned /* color */);
extern void draw_solid_rectangle(Graphic */* graphic */, int /* x1 */, int /* y1 */, int /* x2 */, int /* y2 */, unsigned /* color */);
extern void copy_overlapping_area(Graphic */* graphic */, int /* src_x */, int /* src_y */, int /* dst_x */, int /* dst_y */, unsigned /* w */, unsigned /* h */, unsigned /* default_color */);
extern void hls2rgb(int /* h */, int /* l */, int /* s */, short */* r */, short */* g */, short */* b */);
extern void dump_graphic(Graphic const */* graphic */);
extern unsigned get_color_register_count(TScreen const */* screen */);
extern void update_color_register(Graphic */* graphic */, unsigned /* color */, int /* r */, int /* g */, int /* b */);
extern RegisterNum find_color_register(ColorRegister const */* color_registers */, int /* r */, int /* g */, int /* b */);
extern void chararea_clear_displayed_graphics(TScreen const */* screen */, int /* leftcol */, int /* toprow */, int /* ncols */, int /* nrows */);
extern void pixelarea_clear_displayed_graphics(TScreen const */* screen */, int /* winx */, int /* winy */, int /* w */, int /* h */);
extern void refresh_displayed_graphics(XtermWidget /* xw */, int /* leftcol */, int /* toprow */, int /* ncols */, int /* nrows */);
extern void refresh_modified_displayed_graphics(XtermWidget /* xw */);
extern void reset_displayed_graphics(TScreen const */* screen */);
extern void scroll_displayed_graphics(XtermWidget /* xw */, int /* rows */);
#ifdef NO_LEAKS
extern void noleaks_graphics(Display */* dpy */);
#endif
#else
#define get_new_graphic(xw, charrow, charcol, type) /* nothing */
#define get_new_or_matching_graphic(xw, charrow, charcol, actual_width, actual_height, type) /* nothing */
#define read_pixel(graphic, x, y) /* nothing */
#define draw_solid_pixel(graphic, x, y, color) /* nothing */
#define draw_solid_rectangle(graphic, x1, y1, x2, y2, color) /* nothing */
#define copy_overlapping_area(graphic, src_x, src_y, dst_x, dst_y, w, h, default_color) /* nothing */
#define hls2rgb(h, l, s, r, g, b) /* nothing */
#define dump_graphic(graphic) /* nothing */
#define get_color_register_count(screen) /* nothing */
#define update_color_register(graphic, color, r, g, b) /* nothing */
#define find_color_register(color_registers, r, g, b) /* nothing */
#define chararea_clear_displayed_graphics(screen, leftcol, toprow, ncols, nrows) /* nothing */
#define pixelarea_clear_displayed_graphics(screen, winx, winy, w, h) /* nothing */
#define refresh_displayed_graphics(xw, leftcol, toprow, ncols, nrows) /* nothing */
#define refresh_modified_displayed_graphics(xw) /* nothing */
#define reset_displayed_graphics(screen) /* nothing */
#define scroll_displayed_graphics(xw, rows) /* nothing */
#endif
/* *INDENT-ON* */
#endif /* included_graphics_h */
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