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292 ira 1 
/*******************************************************************************
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 * draw.c - implementation for libggi-based drawing on the GNU/Linux
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 *          framebuffer device.
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 *
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 * Copyright (c) 2006, Ira W. Snyder (devel@irasnyder.com)
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 ******************************************************************************/
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#include <ggi/ggi.h>
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#include <stdio.h>
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#include "draw.h"
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/* Initialize GGI for drawing */
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void draw_init ()
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{
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    /* Initialize the palette */
296 ira 16 
    palette[AQUA].r = 0x0000;
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    palette[AQUA].g = 0xffff;
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    palette[AQUA].b = 0xffff;
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    palette[BLACK].r = 0x0000;
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    palette[BLACK].g = 0x0000;
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    palette[BLACK].b = 0x0000;
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    palette[BLUE].r = 0x0000;
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    palette[BLUE].g = 0x0000;
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    palette[BLUE].b = 0xffff;
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    palette[FUCHSIA].r = 0xffff;
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    palette[FUCHSIA].g = 0x0000;
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    palette[FUCHSIA].b = 0xffff;
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    palette[GRAY].r = 0x8080;
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    palette[GRAY].g = 0x8080;
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    palette[GRAY].b = 0x8080;
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    palette[GREEN].r = 0x0000;
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    palette[GREEN].g = 0x8080;
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    palette[GREEN].b = 0x0000;
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    palette[LIME].r = 0x0000;
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    palette[LIME].g = 0xffff;
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    palette[LIME].b = 0x0000;
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    palette[MAROON].r = 0x8080;
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    palette[MAROON].g = 0x0000;
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    palette[MAROON].b = 0x0000;
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    palette[NAVY].r = 0x0000;
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    palette[NAVY].g = 0x0000;
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    palette[NAVY].b = 0x8080;
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    palette[OLIVE].r = 0x8080;
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    palette[OLIVE].g = 0x8080;
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    palette[OLIVE].b = 0x0000;
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    palette[PURPLE].r = 0x8080;
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    palette[PURPLE].g = 0x0000;
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    palette[PURPLE].b = 0x8080;
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    palette[RED].r = 0xffff;
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    palette[RED].g = 0x0000;
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    palette[RED].b = 0x0000;
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    palette[SILVER].r = 0xc0c0;
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    palette[SILVER].g = 0xc0c0;
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    palette[SILVER].b = 0xc0c0;
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    palette[TEAL].r = 0x0000;
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    palette[TEAL].g = 0x8080;
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    palette[TEAL].b = 0x8080;
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    palette[WHITE].r = 0xffff;
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    palette[WHITE].g = 0xffff;
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    palette[WHITE].b = 0xffff;
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    palette[YELLOW].r = 0xffff;
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    palette[YELLOW].g = 0xffff;
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    palette[YELLOW].b = 0x0000;
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292 ira 80 
    /* Intialize GGI itself */
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    if (ggiInit () != 0)
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    {
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        printf ("Error initialising GGI!\n");
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        exit (1);
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    }
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    /* Try to open the screen */
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    if ((vis = ggiOpen (NULL)) == NULL)
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    {
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        printf ("Error opening visual!\n");
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        ggiExit ();
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        exit (1);
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    }
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    /* Try to set the screen mode */
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    if (ggiSetSimpleMode (vis, GGI_AUTO, GGI_AUTO, 0, GT_AUTO))
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    {
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        printf ("Set the GGI_DISPLAY variable to the palemu!\n");
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        exit (1);
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    }
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    /* load the palette to the screen */
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    ggiSetPalette (vis, 0, NUM_COLORS, palette);
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    /* Set default foreground and background */
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    ggiSetGCForeground (vis, BLACK);
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    ggiSetGCBackground (vis, BLACK);
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}
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/* Close GGI when we're done drawing */
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void draw_close ()
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{
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    ggiClose (vis);
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    ggiExit ();
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}
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void draw_clearscreen ()
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{
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    ggiSetGCForeground (vis, BLACK);
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    ggiFillscreen (vis);
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    ggiFlush (vis);
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}
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void draw_putpixel (int x, int y, int color)
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{
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    ggiSetGCForeground (vis, color);
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    ggiDrawPixel (vis, x, y);
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    ggiFlush (vis);
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}
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void draw_box (int x, int y, int width, int height, int color)
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{
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    ggiSetGCForeground (vis, color);
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    ggiDrawBox (vis, x, y, width, height);
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    ggiFlush (vis);
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}
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void draw_line (int x1, int y1, int x2, int y2, int color)
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{
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    ggiSetGCForeground (vis, color);
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    ggiDrawLine (vis, x1, y1, x2, y2);
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    ggiFlush (vis);
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}
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295 ira 145 
void draw_putc (int x, int y, char c, int color)
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{
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    ggiSetGCForeground (vis, color);
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    ggiPutc (vis, x, y, c);
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    ggiFlush (vis);
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}
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void draw_puts (int x, int y, const char *str, int color)
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{
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    ggiSetGCForeground (vis, color);
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    ggiPuts (vis, x, y, str);
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    ggiFlush (vis);
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}
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