int main(void)
{
GP_Backend *win_1, *win_2;
win_1 = GP_BackendX11Init(NULL, 0, 0, 300, 300, "win 1", 0);
win_2 = GP_BackendX11Init(NULL, 0, 0, 300, 300, "win 2", 0);
if (win_1 == NULL || win_2 == NULL) {
GP_BackendExit(win_1);
GP_BackendExit(win_2);
return 1;
}
/* Update the backend screen */
redraw(win_1->context);
redraw(win_2->context);
GP_BackendFlip(win_1);
GP_BackendFlip(win_2);
for (;;) {
/*
* Wait for backend event.
*
* Either window is fine as they share connection.
*/
GP_Backend *b = win_1 ? win_1 : win_2;
if (b == NULL)
return 0;
GP_BackendWait(b);
if (ev_loop(win_1, "win 1"))
win_1 = NULL;
if (ev_loop(win_2, "win 2"))
win_2 = NULL;
}
GP_BackendExit(win_1);
GP_BackendExit(win_2);
return 0;
}
int main(int argc, char *argv[])
{
const char *backend_opts = "X11";
int opt;
while ((opt = getopt(argc, argv, "b:h")) != -1) {
switch (opt) {
case 'b':
backend_opts = optarg;
break;
case 'h':
GP_BackendInit(NULL, NULL, stderr);
return 0;
break;
default:
fprintf(stderr, "Invalid paramter '%c'\n", opt);
return 1;
}
}
backend = GP_BackendInit(backend_opts, "Input Test", stderr);
if (backend == NULL) {
fprintf(stderr, "Failed to initalize backend '%s'\n",
backend_opts);
return 1;
}
win = backend->context;
red = GP_ColorToContextPixel(GP_COL_RED, win);
green = GP_ColorToContextPixel(GP_COL_GREEN, win);
white = GP_ColorToContextPixel(GP_COL_WHITE, win);
black = GP_ColorToContextPixel(GP_COL_BLACK, win);
GP_Fill(win, black);
GP_BackendFlip(backend);
for (;;) {
GP_BackendWait(backend);
event_loop();
}
}
static void event_loop(void)
{
for (;;) {
GP_BackendWait(backend);
while (GP_BackendEventsQueued(backend)) {
GP_Event ev;
GP_BackendGetEvent(backend, &ev);
GP_EventDump(&ev);
switch (ev.type) {
case GP_EV_KEY:
draw_event(&ev);
switch (ev.val.key.key) {
case GP_KEY_ESC:
GP_BackendExit(backend);
exit(0);
break;
case GP_BTN_LEFT:
GP_HLineXXY(win, ev.cursor_x - 3,
ev.cursor_x + 3,
ev.cursor_y, red);
GP_VLineXYY(win, ev.cursor_x,
ev.cursor_y - 3,
ev.cursor_y + 3, red);
GP_BackendFlip(backend);
break;
default:
break;
}
break;
case GP_EV_REL:
switch (ev.code) {
static int size = 0;
case GP_EV_REL_POS:
if (GP_EventGetKey(&ev, GP_BTN_LEFT)) {
GP_PutPixel(win, ev.cursor_x,
ev.cursor_y, green);
}
int align = GP_ALIGN_RIGHT|GP_VALIGN_BOTTOM;
GP_TextClear(win, NULL, 20, 40, align,
black, size);
size = GP_Print(win, NULL, 20, 40, align,
white, black, "X=%3u Y=%3u dX=%3i dY=%3i",
ev.cursor_x, ev.cursor_y,
ev.val.rel.rx, ev.val.rel.ry);
GP_BackendFlip(backend);
break;
}
break;
case GP_EV_SYS:
switch (ev.code) {
case GP_EV_SYS_RESIZE:
GP_BackendResizeAck(backend);
break;
case GP_EV_SYS_QUIT:
GP_BackendExit(backend);
exit(0);
break;
}
break;
}
}
}
}