void menu_motion(WThing *thing, XMotionEvent *ev, int dx, int dy,
WFunction *func, WFuncArg arg)
{
WMenu *menu;
int ret;
if(!WTHING_IS(thing, WTHING_MENU))
return;
menu=(WMenu*)thing;
if(!menu_select_at(menu, ev->x_root, ev->y_root)){
thing=find_thing(ev->subwindow);
if(thing==(WThing*)menu || thing==NULL ||
!WTHING_IS(thing, WTHING_MENU)){
end_scroll();
return;
}
wglobal.grab_holder=thing;
menu=(WMenu*)thing;
if(!menu_select_at(menu, ev->x_root, ev->y_root)){
end_scroll();
return;
}
}
if(test_scroll(menu, ev->x_root, ev->y_root))
start_scroll(menu);
}
static void check_scroll(WMenu *menu, int x, int y)
{
WRegion *parent=REGION_PARENT_REG(menu);
int rx, ry;
WTimerHandler *fn=NULL;
if(!menu->pmenu_mode)
return;
if(parent==NULL){
end_scroll(menu);
return;
}
region_rootpos(parent, &rx, &ry);
x-=rx;
y-=ry;
if(x<=SCROLL_OFFSET){
fn=(WTimerHandler*)scroll_right;
}else if(y<=SCROLL_OFFSET){
fn=(WTimerHandler*)scroll_down;
}else if(x>=REGION_GEOM(parent).w-SCROLL_OFFSET){
fn=(WTimerHandler*)scroll_left;
}else if(y>=REGION_GEOM(parent).h-SCROLL_OFFSET){
fn=(WTimerHandler*)scroll_up;
}else{
end_scroll(menu);
return;
}
assert(fn!=NULL);
if(scroll_timer!=NULL){
if(scroll_timer->handler==(WTimerHandler*)fn &&
timer_is_set(scroll_timer)){
return;
}
}else{
scroll_timer=create_timer();
if(scroll_timer==NULL)
return;
}
fn(scroll_timer, (Obj*)menu_head(menu));
}
void menu_release(WMenu *menu, XButtonEvent *ev)
{
int entry=menu_entry_at_root_tree(menu, ev->x_root, ev->y_root, &menu);
end_scroll(menu);
if(entry>=0){
menu_select_nth(menu, entry);
menu_finish(menu);
}else if(menu->pmenu_mode){
menu_cancel(menu_head(menu));
}
}
static void scrollfunc()
{
WMenu *menu=scrollmenu;
int dx=scrollhoriz*SCROLL_AMOUNT;
int dy=scrollvert*SCROLL_AMOUNT;
Window win;
if(menu->x+dx>0 && scrollhoriz==1)
dx=-menu->x;
else if(menu->x+menu->w+dx<SCREEN->width-SCROLL_BORDER && scrollhoriz==-1)
dx=-(menu->x+menu->w-SCREEN->width+SCROLL_BORDER);
if(menu->y+dy>0 && scrollvert==1)
dy=-menu->y;
else if(menu->y+menu->h+dy<SCREEN->height-SCROLL_BORDER && scrollvert==-1)
dy=-(menu->y+menu->h-SCREEN->height+SCROLL_BORDER);
move_menu(scrolltop, dx, dy);
/* pointer root -> dx, dy */
get_pointer_rootpos(&dx, &dy);
if(menu_select_at(menu, dx, dy)){
if(test_scroll(menu, dx, dy))
return;
}else if(test_scroll(menu, dx, dy)){
return;
}else{
if(!find_window_at(dx, dy, &win))
goto end;
menu=(WMenu*)find_thing_t(win, WTHING_MENU);
if(menu==NULL)
goto end;
if(test_scroll(menu, dx, dy))
start_scroll(menu);
}
end:
end_scroll();
}
void menu_button(WThing *thing, XButtonEvent *ev,
WFunction *func, WFuncArg arg)
{
WMenu *menu;
int x, y, entry;
if(!WTHING_IS(thing, WTHING_MENU))
return;
menu=(WMenu*)thing;
x=ev->x_root-menu->x;
y=ev->y_root-menu->y;
entry=entry_at(menu, x, y);
if(ev->type==ButtonPress){
/* press */
if(entry==menu->selected){
menu_set_selected(menu, NO_ENTRY);
}else{
menu_set_selected(menu, entry);
show_selected_submenu(menu);
}
return;
}
end_scroll();
/* release */
if(entry>=0){
if(menu->selected==entry)
menu_execute_selected(menu);
}else if(entry!=ENTRY_TITLE && !(menu->flags&WMENU_KEEP)){
finish_menu(menu, FALSE);
}
destroy_contextual_menus();
}