Category : Files from Magazines
Archive : PJ91.ZIP
Filename : FONTDEMO.C
Output of file : FONTDEMO.C contained in archive : PJ91.ZIP
Program Name: FONTDEMO.C
Author: Ron Fosner
Creation Date: March-90
Copyright Ron Fosner, (c) 1990
Description:
An program to demonstrate dynamic font generation.
***********************************************/
/**********************************************/
#include
#include
#include
#include "local.h"
/**********************************************/
/* dimensions of typical video screen */
#define X_RESOLUTION 10 /* 10 inches */
#define Y_RESOLUTION 7.5 /* 7.5 inches */
/* the video origin is in the upper left corner */
/**********************************************/
/* function prototypes */
/**********************************************/
void main( int argc, char **argv );
void set_video( void );
/**********************************************/
/* global data */
/**********************************************/
int PixelsperInch_x,PixelsperInch_y,Point_x,Point_y,Value_xy,Value_yx;
short color0 = 1, color1 = 1, color2 = 1;
POINT points_per_pixel;
/**********************************************/
/*
main: called with one argument that is the
location of the Bitstream Speedo font file
name. It then loops though a collection of
settings for the font, displaying a few
lines of text each time, while waiting for
a key press before proceeding.
*/
void main( int argc, char **argv )
{
char * mssg;
int i;
/* the following are the parameters for the
font calls */
static int size = 6;
static int params[][6] =
{
{ 24, 24, 0, 0},
{ 72, 48, 0, 0},
{ 72, 72, 0, 0},
{ 72, 72, 12, 0},
{ 72, 72, 0, 12},
{ 72, 72, 12, 12},
};
if ( argc != 2 )
{
printf("Need to specify a font file\n");
exit( 1 );
}
/* reset the text drawing information */
/* need to get video information */
set_video();
for ( i = 0 ; i < size ; i++ )
{
/* erase entire screen */
ERASE_SCREEN;
/* set the Speedo parameters to new values */
Point_x = params[i][0];
Point_y = params[i][1];
Value_xy = params[i][2];
Value_yx = params[i][3];
/* call Speedo to generate outlines */
if ( NULL != ( mssg = start_speedo( argv[1] ) ) )
{
/* reset video mode */
/* print error message */
RESET_VIDEO_MODE;
printf("%s\n",mssg);
exit(1);
}
origin(); /* clear screen, reset text origin */
newline(); /* move down one line from the top */
place_text("Hello World!");
newline();
place_text("Hi Again!\n"); /* note embedded newline */
place_text("ABCDEabcde1234567890!");
/* wait for a keypress */
WAIT_FOR_KEY;
}
/* reset video mode */
RESET_VIDEO_MODE;
}
/**********************************************/
/*
set_video: this routine sets the video mode
to the graphics mode, generates the global
values for the video resolution, sets the
color values, then returns.
*/
void set_video( void )
{
struct videoconfig config;
if ( 0 == _setvideomode( VIDEO_MODE ) )
{
printf("Videomode failed\n");
exit(1);
}
_getvideoconfig( &config );
/* set the globa data */
video.x_pixels = config.numxpixels;
video.y_pixels = config.numypixels;
video.colors = config.numcolors;
if ( video.colors > 2 ) /* a color screen */
{
color0 = 15;/*_BRIGHTWHITE;*/
color1 = 1;/*_BLUE;*/
color2 = 1+8;/*_LIGHTBLUE;*/
}
points_per_pixel.x = 72 * X_RESOLUTION / video.x_pixels;
points_per_pixel.y = 72 * Y_RESOLUTION / video.y_pixels;
PixelsperInch_x = video.x_pixels / X_RESOLUTION;
PixelsperInch_y = video.y_pixels / Y_RESOLUTION;
}
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