void muiDrawObject(muiObject *obj)
{
switch (obj->type) {
case MUI_BUTTON:
drawbut(obj);
break;
case MUI_RADIOBUTTON:
drawradiobutton(obj);
break;
case MUI_TINYRADIOBUTTON:
drawtinyradio(obj);
break;
case MUI_LABEL:
drawlabel(obj);
break;
case MUI_BOLDLABEL:
drawboldlabel(obj);
break;
case MUI_TEXTBOX:
drawtb(obj);
break;
case MUI_VSLIDER:
drawvs(obj);
break;
case MUI_HSLIDER:
drawhs(obj);
break;
case MUI_TEXTLIST:
drawtl(obj);
break;
case MUI_PULLDOWN:
drawpulldown(obj);
break;
}
}
static void drawmenu(void) {
int i;
for (i=0;i<NBUTTONS;i++) {
drawbut(i);
}
}
static void turn_on_off (int pressed) {
/* Shows when the menu is active or inactive by colouring the *
* buttons. */
int i;
for (i=0;i<NBUTTONS;i++) {
button[i].ispressed = pressed;
drawbut(i);
}
}
void event_loop (void (*act_on_button) (float x, float y),
void (*drawscreen) (void)) {
/* The program's main event loop. Must be passed a user routine *
* drawscreen which redraws the screen. It handles all window resizing *
* zooming etc. itself. If the user clicks a button in the graphics *
* (toplevel) area, the act_on_button routine passed in is called. */
XEvent report;
int bnum;
float x, y;
#define OFF 1
#define ON 0
turn_on_off (ON);
while (1) {
XNextEvent (display, &report);
switch (report.type) {
case Expose:
#ifdef VERBOSE
printf("Got an expose event.\n");
printf("Count is: %d.\n",report.xexpose.count);
printf("Window ID is: %d.\n",report.xexpose.window);
#endif
if (report.xexpose.count != 0)
break;
if (report.xexpose.window == menu)
drawmenu();
else if (report.xexpose.window == toplevel)
drawscreen();
else if (report.xexpose.window == textarea)
draw_message();
break;
case ConfigureNotify:
top_width = report.xconfigure.width;
top_height = report.xconfigure.height;
update_transform();
#ifdef VERBOSE
printf("Got a ConfigureNotify.\n");
printf("New width: %d New height: %d.\n",top_width,top_height);
#endif
break;
case ButtonPress:
#ifdef VERBOSE
printf("Got a buttonpress.\n");
printf("Window ID is: %d.\n",report.xbutton.window);
#endif
if (report.xbutton.window == toplevel) {
x = XTOWORLD(report.xbutton.x);
y = YTOWORLD(report.xbutton.y);
act_on_button (x, y);
}
else { /* A menu button was pressed. */
bnum = which_button(report.xbutton.window);
#ifdef VERBOSE
printf("Button number is %d\n",bnum);
#endif
button[bnum].ispressed = 1;
drawbut(bnum);
XFlush(display); /* Flash the button */
button[bnum].fcn(bnum, drawscreen);
button[bnum].ispressed = 0;
drawbut(bnum);
if (button[bnum].fcn == proceed) {
turn_on_off(OFF);
flushinput ();
return; /* Rather clumsy way of returning *
* control to the simulator */
}
}
break;
}
}
}
