19928/jj_vitp/Interface/widgets/location_widget.e

note
	description: "[
		Widget representing an area on the game board (such as a 
		land mass or port.)
		]"
	author: "Jimmy J. Johnson"

deferred class
	LOCATION_WIDGET

inherit

	VITP_WIDGET
		rename
			target as location
		redefine
			create_interface_objects,
--			initialize,
			extend_widgets,
			build_widgets,
			set_widget_order,
			add_actions,
--			defining_figure,
			paint,
			on_button_pressed,
--			on_pointer_leave,
			target_imp
		end

feature {NONE} -- Initialization

	create_interface_objects
			-- Initialize attributes
		do
			create land
			land_color := Default_land_color
			Precursor {VITP_WIDGET}
		end

	extend_widgets
			-- Put widgets into Current.  This cannot be done
			-- in `create_interface_object', because cannot call
			-- `extend' feature until all objects [in descendants]
			-- are also created.
		do
			Precursor {VITP_WIDGET}
			extend (land)
		end

	build_widgets
			-- Now that widgets were created in `create_interface_objects'
			-- and added to Current in `extend_widgets', build up the
			-- widgets by adding internal structure to each widget.
		do
			Precursor {VITP_WIDGET}
			build_land
		end

	set_widget_order
			-- Ensure the widgets are ordered properly
			-- (i.e. whose on top?)
		do
			Precursor {VITP_WIDGET}
			bring_to_front (land)
			bring_to_front (text_group)
		end

	add_actions
			-- Make Current react to events
		do
			Precursor {VITP_WIDGET}
			pointer_button_press_actions.extend (agent on_button_pressed)
			pointer_button_release_actions.extend (agent on_button_released)
			pointer_leave_actions.extend (agent on_pointer_leave)
		end

	build_land
			-- Create any land masses in Current
		do
		end

feature -- Access

--	defining_figure: EV_MODEL
--			-- The figure to be used to determine if other figures
--			-- overlap this one or for capturing mouse events
--		do
--			Result := land
--		end

feature -- Basic operations

	paint
			-- Set the colors for the land and other areas
		local
			bc, c: EV_COLOR
		do
			Precursor {VITP_WIDGET}
			bc := adjusted_color (Land_boundary_color)
			c := adjusted_color (land_color)
			from land.start
			until land.exhausted
			loop
				check attached {EV_MODEL_POLYGON} land.item as p then
					p.set_foreground_color (bc)
					p.set_background_color (c)
				end
				land.forth
			end
		end

feature {NONE} -- Implementation (actions)

	on_button_pressed (ax: INTEGER; ay: INTEGER; a_button: INTEGER; x_tilt: DOUBLE; y_tilt: DOUBLE;
								pressure: DOUBLE; a_screen_x: INTEGER; a_screen_y: INTEGER)
			-- React to a button press by brightening the location.
--			-- Notify `board_world' that Current was clicked
--			-- This allows the `board_world' to handle the click *and* to know the
--			-- widget on which the click occurred.
		local
--			u_list: LINKED_SET [VITP_MOVEABLE]
			g: EV_MODEL_GROUP
		do
			io.put_string ("LOCATION_WIDGET.on_button_press -- " + location.name + "%N")
			g := group
			is_highlighting := True
--			is_highlighting.set_item (true)
--			focused_widgets.extend (Current)
			set_dimming_level ({DIMABLE}.Bright)
			paint
--				-- Also, brighten all units that are at this location
--			check attached board_world as bw then
--				u_list := location.units
--				from u_list.start
--				until u_list.after
--				loop
--					check attached {ATTACK_UNIT_WIDGET} bw.attack_widgets.item (u_list.item) as w then
--						focused_widgets.extend (w)
--						w.set_dimming_level ({DIMABLE}.Bright)
--						w.paint
--					end
--					u_list.forth
--				end
--			end
		end

	on_button_released (ax: INTEGER; ay: INTEGER; a_button: INTEGER; x_tilt: DOUBLE; y_tilt: DOUBLE;
								pressure: DOUBLE; a_screen_x: INTEGER; a_screen_y: INTEGER)
			-- React to a button release event
		do
			if is_highlighting then
				is_highlighting := false
				restore_dimming_level
				paint
			end
		end

	on_pointer_leave
			-- React to the pointer leaving the area [in case the
			-- button was pressed and dragged off Current].
		do
			if is_highlighting then
				is_highlighting := false
				restore_dimming_level
				paint
			end
--			Precursor {VITP_NAMED_WIDGET}
		end

feature {NONE} -- Implementation

	is_highlighting: BOOLEAN
			-- Is the location set brighter than normal?

	land: EV_MODEL_WORLD
			-- To draw the land area(s) in Current		

	land_color: EV_COLOR
			-- The color with which to draw the land

	target_imp: detachable LOCATION
			-- Anchor for the `target' represented by Current

end