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note description: "Defines the style, width and color of a pen." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2008-12-29 11:27:11 -0900 (Mon, 29 Dec 2008) $" revision: "$Revision: 76420 $" class interface WEL_LOG_PEN create make (a_style, a_width: INTEGER_32; a_color: WEL_COLOR_REF) -- Make a log pen using a_style, a_width and -- a_color. -- See class WEL_PS_CONSTANTS for a_style values. require valid_pen_style_constant: valid_pen_style_constant (a_style) positive_width: a_width >= 0 color_not_void: a_color /= Void ensure set_style: style = a_style set_width: width = a_width set_color: color.item = a_color.item make_by_pen (pen: WEL_PEN) -- Make a log pen using the information of pen. require pen_not_void: pen /= Void pen_exists: pen.exists feature -- Access color: WEL_COLOR_REF -- Pen color ensure result_not_void: Result /= Void generating_type: TYPE [detachable WEL_LOG_PEN] -- Type of current object -- (type of which it is a direct instance) -- (from ANY) ensure -- from ANY generating_type_not_void: Result /= Void generator: STRING_8 -- Name of current object's generating class -- (base class of the type of which it is a direct instance) -- (from ANY) ensure -- from ANY generator_not_void: Result /= Void generator_not_empty: not Result.is_empty item: POINTER -- Generic Windows handle or structure pointer. -- Can be a HWND, HICON, RECT *, WNDCLASS *, etc... -- (from WEL_ANY) style: INTEGER_32 -- Pen style ensure valid_result: valid_pen_style_constant (Result) width: INTEGER_32 -- Pen width ensure positive_result: Result >= 0 feature -- Measurement Structure_size: INTEGER_32 -- Size to allocate (in bytes) ensure -- from WEL_STRUCTURE positive_result: Result > 0 feature -- Comparison frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void -- or attached to isomorphic object structures? -- (from ANY) ensure -- from ANY instance_free: class shallow_implies_deep: standard_equal (a, b) implies Result both_or_none_void: (a = Void) implies (Result = (b = Void)) same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b)) symmetric: Result implies deep_equal (b, a) frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached -- to objects considered equal? -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b)) frozen is_deep_equal alias "≡≡≡" (other: WEL_LOG_PEN): BOOLEAN -- Are Current and other attached to isomorphic object structures? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY shallow_implies_deep: standard_is_equal (other) implies Result same_type: Result implies same_type (other) symmetric: Result implies other.is_deep_equal (Current) frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached to -- field-by-field identical objects of the same type? -- Always uses default object comparison criterion. -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b)) frozen standard_is_equal alias "" (other: WEL_LOG_PEN): BOOLEAN -- Is other attached to an object of the same type -- as current object, and field-by-field identical to it? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY same_type: Result implies same_type (other) symmetric: Result implies other.standard_is_equal (Current) feature -- Status report conforms_to (other: ANY): BOOLEAN -- Does type of current object conform to type -- of other (as per Eiffel: The Language, chapter 13)? -- (from ANY) require -- from ANY other_not_void: other /= Void exists: BOOLEAN -- Does the `item` exist? -- (from WEL_ANY) ensure -- from WEL_ANY Result = (item /= default_pointer) same_type (other: ANY): BOOLEAN -- Is type of current object identical to type of other? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY definition: Result = (conforms_to (other) and other.conforms_to (Current)) shared: BOOLEAN -- Is `item` shared by another object? -- If False (by default), `item` will -- be destroyed by `destroy_item`. -- If True, `item` will not be destroyed. -- (from WEL_ANY) feature -- Status setting set_shared -- Set `shared` to True. -- (from WEL_ANY) ensure -- from WEL_ANY shared: shared set_unshared -- Set `shared` to False. -- (from WEL_ANY) ensure -- from WEL_ANY unshared: not shared feature -- Element change set_color (a_color: WEL_COLOR_REF) -- Set `color` with a_color require a_color_not_void: a_color /= Void ensure set_color: color.item = a_color.item set_item (an_item: POINTER) -- Set `item` with an_item -- (from WEL_ANY) ensure -- from WEL_ANY item_set: item = an_item set_style (a_style: INTEGER_32) -- Set `style` with a_style require valid_pen_style_constant: valid_pen_style_constant (a_style) ensure set_style: style = a_style set_width (a_width: INTEGER_32) -- Set `width` with a_width require positive_width: a_width >= 0 ensure set_width: width = a_width feature -- Removal dispose -- Destroy the inner structure of Current. -- -- This function should be called by the GC when the -- object is collected or by the user if Current is -- no more usefull. -- (from WEL_ANY) feature -- Duplication frozen deep_copy (other: WEL_LOG_PEN) -- Effect equivalent to that of: -- `copy` (other . `deep_twin`) -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY deep_equal: deep_equal (Current, other) frozen deep_twin: WEL_LOG_PEN -- New object structure recursively duplicated from Current. -- (from ANY) ensure -- from ANY deep_twin_not_void: Result /= Void deep_equal: deep_equal (Current, Result) frozen standard_copy (other: WEL_LOG_PEN) -- Copy every field of other onto corresponding field -- of current object. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_standard_equal: standard_is_equal (other) frozen standard_twin: WEL_LOG_PEN -- New object field-by-field identical to other. -- Always uses default copying semantics. -- (from ANY) ensure -- from ANY standard_twin_not_void: Result /= Void equal: standard_equal (Result, Current) frozen twin: WEL_LOG_PEN -- New object equal to Current -- `twin` calls `copy`; to change copying/twinning semantics, redefine `copy`. -- (from ANY) ensure -- from ANY twin_not_void: Result /= Void is_equal: Result ~ Current feature -- Basic operations copy (other: WEL_LOG_PEN) -- Update current object using fields of object attached -- to other, so as to yield equal objects. -- (from WEL_STRUCTURE) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_equal: Current ~ other frozen default: detachable WEL_LOG_PEN -- Default value of object's type -- (from ANY) frozen default_pointer: POINTER -- Default value of type POINTER -- (Avoid the need to write p.`default` for -- some p of type POINTER.) -- (from ANY) ensure -- from ANY instance_free: class default_rescue -- Process exception for routines with no Rescue clause. -- (Default: do nothing.) -- (from ANY) frozen do_nothing -- Execute a null action. -- (from ANY) ensure -- from ANY instance_free: class initialize -- Fill Current with zeros. -- (from WEL_STRUCTURE) require -- from WEL_STRUCTURE exists: exists initialize_with_character (a_character: CHARACTER_8) -- Fill current with a_character. -- (from WEL_STRUCTURE) require -- from WEL_STRUCTURE exists: exists is_equal (other: WEL_LOG_PEN): BOOLEAN -- Is other attached to an object considered -- equal to current object? -- (from WEL_STRUCTURE) require -- from ANY other_not_void: other /= Void ensure -- from ANY symmetric: Result implies other ~ Current consistent: standard_is_equal (other) implies Result memory_copy (source_pointer: POINTER; length: INTEGER_32) -- Copy length bytes from source_pointer to `item`. -- (from WEL_STRUCTURE) require -- from WEL_STRUCTURE length_small_enough: length <= Structure_size length_large_enough: length > 0 exists: exists feature -- Access (Basic style constants) Ps_dash: INTEGER_32 = 1 -- (from WEL_PS_CONSTANTS) Ps_dashdot: INTEGER_32 = 3 -- (from WEL_PS_CONSTANTS) Ps_dashdotdot: INTEGER_32 = 4 -- (from WEL_PS_CONSTANTS) Ps_dot: INTEGER_32 = 2 -- (from WEL_PS_CONSTANTS) Ps_insideframe: INTEGER_32 = 6 -- Mutually exclusive pen style constants. -- (from WEL_PS_CONSTANTS) Ps_null: INTEGER_32 = 5 -- (from WEL_PS_CONSTANTS) Ps_solid: INTEGER_32 = 0 -- (from WEL_PS_CONSTANTS) feature -- Access (Extended Style constants for use in conjunction with {WEL_PEN}.make_from_brush) Ps_alternate: INTEGER_32 = 8 -- Mutually exclusive pen style constants. -- (from WEL_PS_CONSTANTS) Ps_cosmetic: INTEGER_32 = 0 -- (from WEL_PS_CONSTANTS) Ps_endcap_flat: INTEGER_32 = 512 -- Ps_geometric style constants. -- (from WEL_PS_CONSTANTS) Ps_endcap_round: INTEGER_32 = 0 -- (from WEL_PS_CONSTANTS) Ps_endcap_square: INTEGER_32 = 256 -- (from WEL_PS_CONSTANTS) Ps_geometric: INTEGER_32 = 65536 -- Brush type style constants -- (from WEL_PS_CONSTANTS) Ps_join_bevel: INTEGER_32 = 4096 -- (from WEL_PS_CONSTANTS) Ps_join_miter: INTEGER_32 = 8192 -- (from WEL_PS_CONSTANTS) Ps_join_round: INTEGER_32 = 0 -- (from WEL_PS_CONSTANTS) Ps_userstyle: INTEGER_32 = 7 -- (from WEL_PS_CONSTANTS) feature -- Contract Support valid_extended_pen_style (c: INTEGER_32): BOOLEAN -- Is c a valid style constant when used in conjunction with a WEL_LOG_BRUSH. -- (from WEL_PS_CONSTANTS) valid_pen_style_constant (c: INTEGER_32): BOOLEAN -- Is c a valid pen style constant? -- Only valid for non-extended pen creation. -- (from WEL_PS_CONSTANTS) feature -- Output Io: STD_FILES -- Handle to standard file setup -- (from ANY) ensure -- from ANY instance_free: class io_not_void: Result /= Void out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY out_not_void: Result /= Void print (o: detachable ANY) -- Write terse external representation of o -- on standard output. -- (from ANY) ensure -- from ANY instance_free: class frozen tagged_out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY tagged_out_not_void: Result /= Void feature -- Platform Operating_environment: OPERATING_ENVIRONMENT -- Objects available from the operating system -- (from ANY) ensure -- from ANY instance_free: class operating_environment_not_void: Result /= Void invariant color_not_void: color /= Void positive_width: width >= 0 -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) note copyright: "Copyright (c) 1984-2006, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 356 Storke Road, Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end -- class WEL_LOG_PEN
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