namespace eval osd_menu {

# default colors defined here, for easy global tweaking
variable default_bg_color "0x7090aae8 0xa0c0dde8 0x90b0cce8 0xc0e0ffe8"
variable default_text_color 0x000000ff
variable default_select_color "0x0044aa80 0x2266dd80 0x0055cc80 0x44aaff80"
variable default_header_text_color 0xff9020ff

# button stuff
variable button_fade_timeout 8
variable button_fadeout_time 4

# TODO: make this a generic proc with osd element as input?
proc is_cursor_on_button {} {
	set x 2; set y 2
	catch {lassign [osd info "main_menu_pop_up_button" -mousecoord] x y}
	return [expr {0 <= $x && $x <= 1 && 0 <= $y && $y <= 1}]
}

proc check_button_clicked {} {
	if {[is_cursor_on_button]} {
		main_menu_toggle
	}
	after "mouse button1 down" [namespace code check_button_clicked]
}

variable start_fadeout_button_id 0

proc update_button_fade {} {
	variable start_fadeout_button_id
	if {[is_cursor_on_button]} {
		if {$start_fadeout_button_id ne "0"} {
			after cancel $start_fadeout_button_id
			osd configure "main_menu_pop_up_button" -fadeCurrent 1 -fadeTarget 1
			set start_fadeout_button_id 0
		}
	} else {
		if {$start_fadeout_button_id eq "0"} {
			variable button_fade_timeout
			set start_fadeout_button_id [after realtime $button_fade_timeout {
				osd configure "main_menu_pop_up_button" -fadeTarget 0
			}]
		}
	}
	after "mouse motion" [namespace code update_button_fade]
}

if {![regexp android|dingux "[openmsx_info platform]"]} {
	# add a button to pop up the menu
	osd create rectangle main_menu_pop_up_button -z 0 -x 0 -y 0 -w 35 -h 16 -rgba $default_bg_color -fadePeriod $button_fadeout_time
	osd create text main_menu_pop_up_button.text -z 0 -x 0 -y 0 -rgba $default_text_color -text "menu"

	after "mouse button1 down" [namespace code check_button_clicked]
	update_button_fade
}

} ;# namespace osd_menu
