indexing

	status: "See notice at end of class";
	date: "$Date$";
	revision: "$Revision$"

deferred class

	SCREEN_CURSOR_I 

inherit

	CURSOR_TYPE
		
feature -- Access

	type: INTEGER is
			-- Predefined type of current cursor
		deferred
		end

feature -- Element change

	set_pixmap (pixmap: PIXMAP; mask: PIXMAP) is
			-- Set `pixmap' as the new shape of the cursor.
			-- `mask' is the pixel of pixmap that are to be displayed.
			-- If `mask' is void, a suitable mask is drawn from `pixmap'.
			-- Note that `pixmap' and `mask' are not kept by the cursor,
			-- they may be disposed, and if they change, cursor will be
			-- altered.
		require
			pixmap_exists: pixmap /= Void
			pixmap_is_valid: pixmap.is_valid;
			mask_is_valid_if_exists: (mask /= Void) implies mask.is_valid
		deferred
		ensure
			set: type = User_defined_pixmap
		end;

	set_type (new_type: INTEGER) is
			-- Set type of current cursor to `new_type'.
			-- This new type must be a predefined one.
		require
			type_ok: (X_cursor <= new_type) and (new_type < Cursor_undefined)
		deferred
		ensure
			set: type = new_type
		end;

invariant

	valid: ((type >= X_cursor) and (type < Cursor_undefined)) or (type = User_defined_pixmap)

end -- class SCREEN_CURSOR_I



--|----------------------------------------------------------------
--| EiffelVision: library of reusable components for ISE Eiffel.
--| Copyright (C) 1986-2001 Interactive Software Engineering Inc.
--| All rights reserved. Duplication and distribution prohibited.
--| May be used only with ISE Eiffel, under terms of user license. 
--| Contact ISE for any other use.
--|
--| Interactive Software Engineering Inc.
--| ISE Building
--| 360 Storke Road, Goleta, CA 93117 USA
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--| Electronic mail <info@eiffel.com>
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