GUI_status
GUI_GenericWidget:: HandleEvent(const SDL_Event *event)
{
GUI_status status;
status = GUI_PASS;
if ( EventProc ) {
int handle_it;
/* Mouse events outside the widget area are ignored */
handle_it = 1;
switch (event->type) {
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP: {
int x, y;
x = event->button.x;
y = event->button.y;
if ( ! HitRect(x, y) ) {
handle_it = 0;
}
}
break;
case SDL_MOUSEMOTION: {
int x, y;
x = event->motion.x;
y = event->motion.y;
if ( ! HitRect(x, y) ) {
handle_it = 0;
}
}
break;
}
if ( handle_it ) {
widget_info info;
FillInfo(&info);
status = EventProc(&info, event);
}
}
return(status);
}
int main(int argc, char *argv[])
{
Display *display;
XVisualInfo *vinfo;
XSetWindowAttributes winattrs;
Window window;
GLXContext context;
int visual[] = { GLX_RGBA, GLX_DOUBLEBUFFER,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
GLX_DEPTH_SIZE, 16,
None };
display = XOpenDisplay(NULL);
if (!display)
{
printf("Cannot connect to X server %s\n", XDisplayName(NULL));
return 0;
}
vinfo = glXChooseVisual(display, DefaultScreen(display), visual);
if (!vinfo)
{
printf("Unable to create suitable opengl visual.\n");
XCloseDisplay(display);
return 0;
}
context = glXCreateContext(display, vinfo, 0, True);
if (!context)
{
printf("Unable to create opengl context.\n");
XCloseDisplay(display);
return 0;
}
// memset(winattrs, 0, sizeof(XSetWindowAttributes));
winattrs.colormap = XCreateColormap(display, DefaultRootWindow(display), vinfo->visual, AllocNone);
winattrs.event_mask = ExposureMask | StructureNotifyMask | KeyPressMask | KeyReleaseMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
winattrs.border_pixel = 0;
window = XCreateWindow(display, DefaultRootWindow(display), 0, 0, 640, 480, 0, vinfo->depth, InputOutput, vinfo->visual,
CWBorderPixel | CWColormap | CWEventMask, &winattrs);
XSetStandardProperties(display, window, "altEngine", "opengl", None, argv, argc, NULL );
XMapWindow(display, window);
glXMakeCurrent(display, window, context);
printf("GL Version: %s\n", glGetString(GL_VERSION));
while (True)
{
if ( XPending(display) )
{
if ( EventProc(display, window, context) )
break;
}
else
{
EventProc(NULL, window, context);
}
}
printf("Closing...\n");
glXDestroyContext(display, context);
XCloseDisplay(display);
return 0;
}
