ref: a7b53c47fca0520636b633e3b812ef6313ea1891
dir: /demos/graph/xtest.c/
#include "graph.h"
#include "grfont.h" /* dispara^itra bientot */
#include <stdio.h>
static
void Panic( const char* message )
{
fprintf( stderr, "PANIC: %s\n", message );
exit(1);
}
typedef struct grKeyName
{
grKey key;
const char* name;
} grKeyName;
static
const grKeyName key_names[] =
{
{ grKeyF1, "F1" },
{ grKeyF2, "F2" },
{ grKeyF3, "F3" },
{ grKeyF4, "F4" },
{ grKeyF5, "F5" },
{ grKeyF6, "F6" },
{ grKeyF7, "F7" },
{ grKeyF8, "F8" },
{ grKeyF9, "F9" },
{ grKeyF10, "F10" },
{ grKeyF11, "F11" },
{ grKeyF12, "F12" },
{ grKeyEsc, "Esc" },
{ grKeyHome, "Home" },
{ grKeyEnd, "End" },
{ grKeyPageUp, "Page_Up" },
{ grKeyPageDown, "Page_Down" },
{ grKeyLeft, "Left" },
{ grKeyRight, "Right" },
{ grKeyUp, "Up" },
{ grKeyDown, "Down" },
{ grKeyBackSpace, "BackSpace" },
{ grKeyReturn, "Return" }
};
int main( void )
{
grSurface* surface;
int n;
grInit();
surface = grNewScreenSurface( 0, gr_pixel_mode_gray, 320, 400, 128 );
if (!surface)
Panic("Could not create window\n" );
else
{
grColor color;
grEvent event;
const char* string;
int x;
grSetSurfaceRefresh( surface, 1 );
grSetTitle(surface,"X11 driver demonstration" );
for ( x = -10; x < 10; x++ )
{
for ( n = 0; n < 128; n++ )
{
color.value = (n*3) & 127;
grWriteCellChar( surface,
x + ((n % 60) << 3),
80 + (x+10)*8*3 + ((n/60) << 3), n, color );
}
}
color.value = 64;
grWriteCellString( surface, 0, 0, "just an example", color );
do
{
grListenSurface( surface, 0, &event);
/* return if ESC was pressed */
if ( event.key == grKeyEsc )
return 0;
/* otherwise, display key string */
color.value = (color.value + 8) & 127;
{
int count = sizeof(key_names)/sizeof(key_names[0]);
grKeyName* name = (grKeyName*)key_names;
grKeyName* limit = name + count;
const char* kname = 0;
char kname_temp[16];
while (name < limit)
{
if ( name->key == event.key )
{
kname = (const char*)name->name;
break;
}
name++;
}
if (!kname)
{
sprintf( kname_temp, "char '%c'", (char)event.key );
kname = kname_temp;
}
grWriteCellString( surface, 30, 30, kname, color );
grRefreshSurface(surface);
}
} while (1);
}
return 0;
}