/usr/share/doc/xviewg/examples/misc/vkbd_fonts.c is in xview-examples 3.2p1.4-28.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Sample application that communicates with the Function Keys process
*/
#include <ctype.h>
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <xview/xview.h>
#include <xview/canvas.h>
#include <xview/font.h>
Display *dpy;
GC gc;
XFontStruct *font_info;
Frame frame;
Canvas canvas;
static int function_mode = 2;
char *prev_char;
char *soft_labels[4] = {"Brick\nBlue\nMaroon\nOrchid\nViolet\nBlack\nGreen\n\nMagenta\nRed\nClear\n\n\n",
"Coral\nNavy\nOlive\nTurquoise\nYellow\n \n \n \n \nClear\nFonts\nMore\n",
"Fixed\nBembo\nTimes\nCourier\nLucida\n9x15\nGillsans\nPalatino\nScreen\nClear\n\n\n",
"Zapfding\nHelvetica\nBookman\nVtsingle\nTerminal\n \n \n \n \nClear\nColors\nMore\n"
};
char *colors_fonts[49] = {"Empty",
"FireBrick", "Blue", "Maroon", "Orchid", "Violet Red", "Black", "Green", "Magenta", "Red", "Clear", "Fonts", "More",
"Coral","Navy","Olive Drab","Turquoise", "Yellow",0,0,0,0,"Clear","Fonts","More",
"fixed", "bembo-bold-14", "times-bold-14", "courier-bold-14", "lucidasans-bold-14", "9x15", "gillsans-bold-14", "palatino-bold-14", "screen-bold","Clear","Colors","More",
"zapfdingbats-14","helvetica-bold","bookman-demi","vtsingle","terminal",0,0,0,0,"Clear","Colors","More"
};
unsigned short icon_bits[] = {
#include "textdemo.icon"
};
main(argc, argv)
int argc;
char *argv[];
{
XGCValues gcvalues;
Xv_Font font;
void my_event_proc();
extern void exit();
Notify_error notify_interpose_event_func();
Notify_value canvas_interposer();
void put_labels();
Icon icon;
Server_image icon_image;
xv_init(XV_INIT_ARGC_PTR_ARGV, &argc, argv, NULL);
frame = (Frame) xv_create(XV_NULL, FRAME,
FRAME_LABEL, "Virtual Keyboard - Fonts - Demo",
NULL);
icon_image = (Server_image)xv_create(NULL,SERVER_IMAGE,
XV_WIDTH,64,
XV_HEIGHT,64,
SERVER_IMAGE_BITS,icon_bits,
NULL);
icon = (Icon) xv_create(NULL,ICON,
ICON_IMAGE, icon_image,
ICON_MASK_IMAGE, icon_image,
ICON_TRANSPARENT,TRUE,
NULL);
canvas = (Canvas) xv_create(frame, CANVAS,
XV_WIDTH, 400,
XV_HEIGHT, 400,
CANVAS_X_PAINT_WINDOW, TRUE,
NULL);
xv_set(canvas_paint_window(canvas),
WIN_SOFT_FNKEY_LABELS,soft_labels[2],
WIN_EVENT_PROC, my_event_proc,
NULL);
window_fit(frame);
dpy = (Display *) xv_get(frame, XV_DISPLAY);
xv_set(frame,FRAME_ICON,icon,NULL);
font = (Xv_Font) xv_get(frame, XV_FONT);
font_info = (XFontStruct *) xv_get(font, FONT_INFO);
gcvalues.font = (Font) xv_get(font, XV_XID);
gcvalues.foreground = BlackPixel(dpy, DefaultScreen(dpy));
gcvalues.background = WhitePixel(dpy, DefaultScreen(dpy));
gcvalues.graphics_exposures = False;
gc = XCreateGC(dpy, RootWindow(dpy, DefaultScreen(dpy)),
GCForeground | GCBackground | GCFont | GCGraphicsExposures, &gcvalues);
xv_main_loop(frame);
}
void
my_event_proc(win, event)
Xv_Window win;
Event *event;
{
static int x = 10, y = 15;
Window xwin = (Window) xv_get(win, XV_XID);
char c;
void change_attributes();
if (event_is_up(event))
return;
else { /* down event */
if (event_is_key_top(event)) {
switch (event_id(event)) {
case KEY_TOP(1):
change_attributes(1 + (12*function_mode));
break;
case KEY_TOP(2):
change_attributes(2 + (12*function_mode));
break;
case KEY_TOP(3):
change_attributes(3 + (12*function_mode));
break;
case KEY_TOP(4):
change_attributes(4 + (12*function_mode));
break;
case KEY_TOP(5):
change_attributes(5 + (12*function_mode));
break;
case KEY_TOP(6):
change_attributes(6 + (12*function_mode));
break;
case KEY_TOP(7):
change_attributes(7 + (12*function_mode));
break;
case KEY_TOP(8):
change_attributes(8 + (12*function_mode));
break;
case KEY_TOP(9):
change_attributes(9 + (12*function_mode));
break;
case KEY_TOP(10):/* Clear */
XClearWindow(dpy, xwin);
x = 10;
y = 15;
break;
}
} else if (event_action(event) == ACTION_SELECT) {
x = event_x(event);
y = event_y(event);
} else if (event_id(event) < 256) {
c = (char) event_id(event);
if (c == '\n' || c == '\r') {
y += font_info->max_bounds.ascent +
font_info->max_bounds.descent;
x = 10;
} else if (c == 7 || c == 127) { /* backspace or delete */
if (x > 10)
x -= XTextWidth(font_info, "m", 1);
/* use XDrawImageString to overwrite previous text */
XDrawImageString(dpy, xwin, gc, x, y," ", 3);
} else {
XDrawString(dpy, xwin, gc, x, y, &c, 1);
x += XTextWidth(font_info, &c, 1);
}
}
}
}
void
change_attributes(attr)
int attr;
{
XColor exact, color;
if (soft_labels[attr]) {
if (attr < 24) {
if (XAllocNamedColor(dpy, DefaultColormap(dpy, DefaultScreen(dpy)),
colors_fonts[attr], &exact, &color) == 0) {
fprintf(stderr, "could not allocate color %s\n", colors_fonts[attr]);
return;
} else
XSetForeground(dpy, gc, color.pixel);
} else {
if ((font_info = XLoadQueryFont(dpy, colors_fonts[attr])) == 0) {
fprintf(stderr, "could not load font %s\n", colors_fonts[attr]);
return;
} else {
XSetFont(dpy, gc, font_info->fid);
}
}
}
return;
}
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