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note description: "Eiffel Vision font. Mswindows implementation." legal: "See notice at end of class." status: "See notice at end of class." keywords: "character, face, height, family, weight, shape, bold, italic" date: "$Date: 2017-05-03 07:56:14 -0800 (Wed, 03 May 2017) $" revision: "$Revision: 100317 $" class interface EV_FONT_IMP create make -- Initialize Current. ensure -- from EV_ANY_I is_initialized: get_state_flag (Is_initialized_flag) feature -- Initialization make -- Initialize Current. ensure -- from EV_ANY_I is_initialized: get_state_flag (Is_initialized_flag) old_make (an_interface: attached like interface) -- Create Current. require -- from EV_ANY_I an_interface_not_void: an_interface /= Void ensure -- from EV_ANY_I interface_assigned: interface = an_interface base_make_called: base_make_called feature -- Access Aspect_x: INTEGER_32 = 40 -- Relative width of a device pixel -- used for line drawing -- (from WEL_CAPABILITIES_CONSTANTS) Aspect_x_y: INTEGER_32 = 44 -- Diagonal width of a device pixel -- used for line drawing -- (from WEL_CAPABILITIES_CONSTANTS) Aspect_y: INTEGER_32 = 42 -- Relative height of a device pixel -- used for line drawing -- (from WEL_CAPABILITIES_CONSTANTS) Bits_pixel: INTEGER_32 = 12 -- Number of adjacent color bits for each pixel -- (from WEL_CAPABILITIES_CONSTANTS) caption_font: WEL_FONT -- Caption font -- (from WEL_SHARED_FONTS) ensure -- from WEL_SHARED_FONTS result_exists: Result /= Void and then Result.exists char_set: INTEGER_32 -- Charset Clip_caps: INTEGER_32 = 36 -- See class WEL_CLIPPING_CAPABILITIES_CONSTANTS -- (from WEL_CAPABILITIES_CONSTANTS) Color_resolution: INTEGER_32 = 108 -- Color resolution of the device in bits -- (from WEL_CAPABILITIES_CONSTANTS) Curve_caps: INTEGER_32 = 28 -- See class WEL_CURVE_CAPABILITIES_CONSTANTS -- (from WEL_CAPABILITIES_CONSTANTS) Default_pitch: INTEGER_32 = 0 -- (from WEL_FONT_PITCH_CONSTANTS) Driver_version: INTEGER_32 = 1 -- Version number of the device driver -- (from WEL_CAPABILITIES_CONSTANTS) Dt_bottom: INTEGER_32 = 8 -- Declared in Windows as DT_BOTTOM -- (from WEL_DT_CONSTANTS) Dt_calcrect: INTEGER_32 = 1024 -- Declared in Windows as DT_CALCRECT -- (from WEL_DT_CONSTANTS) Dt_center: INTEGER_32 = 1 -- Declared in Windows as DT_CENTER -- (from WEL_DT_CONSTANTS) Dt_expandtabs: INTEGER_32 = 64 -- Declared in Windows as DT_EXPANDTABS -- (from WEL_DT_CONSTANTS) Dt_externalleading: INTEGER_32 = 512 -- Declared in Windows as DT_EXTERNALLEADING -- (from WEL_DT_CONSTANTS) Dt_hideprefix: INTEGER_32 = 1048576 -- Declared in Windows as DT_HIDEPREFIX -- (from WEL_DT_CONSTANTS) Dt_internal: INTEGER_32 = 4096 -- Declared in Windows as DT_INTERNAL -- (from WEL_DT_CONSTANTS) Dt_left: INTEGER_32 = 0 -- Declared in Windows as DT_LEFT -- (from WEL_DT_CONSTANTS) Dt_noclip: INTEGER_32 = 256 -- Declared in Windows as DT_NOCLIP -- (from WEL_DT_CONSTANTS) Dt_noprefix: INTEGER_32 = 2048 -- Declared in Windows as DT_NOPREFIX -- (from WEL_DT_CONSTANTS) Dt_right: INTEGER_32 = 2 -- Declared in Windows as DT_RIGHT -- (from WEL_DT_CONSTANTS) Dt_singleline: INTEGER_32 = 32 -- Declared in Windows as DT_SINGLELINE -- (from WEL_DT_CONSTANTS) Dt_tabstop: INTEGER_32 = 128 -- Declared in Windows as DT_TABSTOP -- (from WEL_DT_CONSTANTS) Dt_top: INTEGER_32 = 0 -- Declared in Windows as DT_TOP -- (from WEL_DT_CONSTANTS) Dt_vcenter: INTEGER_32 = 4 -- Declared in Windows as DT_VCENTER -- (from WEL_DT_CONSTANTS) Dt_word_ellipsis: INTEGER_32 = 262144 -- Declared in Windows as DT_WORD_ELLIPSIS -- (from WEL_DT_CONSTANTS) Dt_wordbreak: INTEGER_32 = 16 -- Declared in Windows as DT_WORDBREAK -- (from WEL_DT_CONSTANTS) family: INTEGER_32 -- Preferred font category. ff_decorative: INTEGER_32 -- Novelty fonts. Old English is an example. -- (from WEL_FONT_FAMILY_CONSTANTS) ff_dontcare: INTEGER_32 -- Don't care or don't know -- (from WEL_FONT_FAMILY_CONSTANTS) ff_modern: INTEGER_32 -- Fonts with constant stroke width (monospace), -- with or without serifs. Monospace fonts are usually -- modern. Pica, Elite, and CourierNew are examples. -- (from WEL_FONT_FAMILY_CONSTANTS) ff_roman: INTEGER_32 -- Fonts with variable stroke width (proportional) -- and with serifs. MS Serif is an example. -- (from WEL_FONT_FAMILY_CONSTANTS) ff_script: INTEGER_32 -- Fonts designed to look like handwriting. -- Script and Cursive are examples. -- (from WEL_FONT_FAMILY_CONSTANTS) ff_swiss: INTEGER_32 -- Fonts with variable stroke width (proportional) -- and without serifs. MS Sans Serif is an example. -- (from WEL_FONT_FAMILY_CONSTANTS) Fixed_pitch: INTEGER_32 = 1 -- (from WEL_FONT_PITCH_CONSTANTS) generating_type: TYPE [detachable EV_FONT_IMP] -- 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 gui_font: WEL_FONT -- Default screen (WEL) font. -- (from WEL_SHARED_FONTS) ensure -- from WEL_SHARED_FONTS result_exists: Result /= Void and then Result.exists height: INTEGER_32 -- Preferred font height measured in screen pixels. height_in_points: INTEGER_32 -- Preferred font height measured in points. Himetric_per_inch: INTEGER_32 = 2540 -- Defined as HIMETRIC_PER_INCH in AtlWin.h -- (from WEL_UNIT_CONVERSION) Screen_horizontal_resolution: INTEGER_32 = 8 -- Width of the display, in pixels -- (from WEL_CAPABILITIES_CONSTANTS) Horizontal_size: INTEGER_32 = 4 -- Width of the physical display in millimeters -- (from WEL_CAPABILITIES_CONSTANTS) Line_caps: INTEGER_32 = 30 -- See class WEL_LINE_CAPABILITIES_CONSTANTS -- (from WEL_CAPABILITIES_CONSTANTS) line_height: INTEGER_32 -- Preferred text editor line height in pixels for Current. -- (from EV_FONT_I) Logical_pixels_x: INTEGER_32 = 88 -- Number of pixels per logical inch along -- the display width -- (from WEL_CAPABILITIES_CONSTANTS) Logical_pixels_y: INTEGER_32 = 90 -- Number of pixels per logical inch along -- the display height -- (from WEL_CAPABILITIES_CONSTANTS) menu_font: WEL_FONT -- Font used in menus -- (from WEL_SHARED_FONTS) ensure -- from WEL_SHARED_FONTS result_exists: Result /= Void and then Result.exists message_font: WEL_FONT -- Font used in message boxes -- (from WEL_SHARED_FONTS) ensure -- from WEL_SHARED_FONTS result_exists: Result /= Void and then Result.exists Num_brushes: INTEGER_32 = 16 -- Number of device-specific brushes -- (from WEL_CAPABILITIES_CONSTANTS) Num_colors: INTEGER_32 = 24 -- Number of entries in the device's color table -- (from WEL_CAPABILITIES_CONSTANTS) Num_fonts: INTEGER_32 = 22 -- Number of device-specific fonts -- (from WEL_CAPABILITIES_CONSTANTS) Num_markers: INTEGER_32 = 20 -- Number of device-specific markers -- (from WEL_CAPABILITIES_CONSTANTS) Num_pens: INTEGER_32 = 18 -- Number of device-specific pens -- (from WEL_CAPABILITIES_CONSTANTS) Num_reserved: INTEGER_32 = 106 -- Number of reserved entries in the system palette -- (from WEL_CAPABILITIES_CONSTANTS) Pdevice_size: INTEGER_32 = 26 -- Size of the PDEVICE internal structure, in bytes -- (from WEL_CAPABILITIES_CONSTANTS) Physical_offset_x: INTEGER_32 = 112 -- Distance from left edge of the printable area, in -- device units. -- (from WEL_CAPABILITIES_CONSTANTS) Physical_offset_y: INTEGER_32 = 113 -- Distance from top edge of the printable area, in -- device units. -- (from WEL_CAPABILITIES_CONSTANTS) Planes: INTEGER_32 = 14 -- Number of color planes -- (from WEL_CAPABILITIES_CONSTANTS) Polygonal_caps: INTEGER_32 = 32 -- See class WEL_POLYGONAL_CAPABILITIES_CONSTANTS -- (from WEL_CAPABILITIES_CONSTANTS) preferred_families: EV_ACTIVE_LIST [STRING_32] -- Preferred user fonts. -- family will be ignored when not Void. -- (from EV_FONT_I) Raster_caps: INTEGER_32 = 38 -- See class WEL_RASTER_CAPABILITIES_CONSTANTS -- (from WEL_CAPABILITIES_CONSTANTS) Scaling_factor_x: INTEGER_32 = 114 -- Scaling factor for the x-axis of the printer. -- (from WEL_CAPABILITIES_CONSTANTS) Scaling_factor_y: INTEGER_32 = 115 -- Scaling factor for the y-axis of the printer. -- (from WEL_CAPABILITIES_CONSTANTS) shape: INTEGER_32 -- Preferred font slant. Size_palette: INTEGER_32 = 104 -- Number of entries in the system palette -- (from WEL_CAPABILITIES_CONSTANTS) small_caption_font: WEL_FONT -- Small caption font -- (from WEL_SHARED_FONTS) ensure -- from WEL_SHARED_FONTS result_exists: Result /= Void and then Result.exists status_font: WEL_FONT -- Font used in status bars -- (from WEL_SHARED_FONTS) ensure -- from WEL_SHARED_FONTS result_exists: Result /= Void and then Result.exists system_font: WEL_FONT -- Default system font. -- (from WEL_SHARED_FONTS) ensure -- from WEL_SHARED_FONTS font_created: Result /= Void and then Result.exists Technology: INTEGER_32 = 2 -- Device technology. -- See class WEL_DEVICE_TECHNOLOGY_CONSTANTS -- (from WEL_CAPABILITIES_CONSTANTS) Text_caps: INTEGER_32 = 34 -- See class WEL_TEXT_CAPABILITIES_CONSTANTS -- (from WEL_CAPABILITIES_CONSTANTS) Variable_pitch: INTEGER_32 = 2 -- (from WEL_FONT_PITCH_CONSTANTS) Sceeen_vertical_resolution: INTEGER_32 = 10 -- Height of the display, in raster lines -- (from WEL_CAPABILITIES_CONSTANTS) Vertical_size: INTEGER_32 = 6 -- Height of the physical display in millimeters -- (from WEL_CAPABILITIES_CONSTANTS) weight: INTEGER_32 -- Preferred font thickness. 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 (other: EV_FONT_IMP): 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) is_equal (other: EV_FONT_IMP): BOOLEAN -- Is other attached to an object considered -- equal to current object? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY symmetric: Result implies other ~ Current consistent: standard_is_equal (other) implies Result 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 (other: EV_FONT_IMP): 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 ascent: INTEGER_32 -- Vertical distance from the origin of the drawing -- operation to the top of the drawn character. 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 descent: INTEGER_32 -- Vertical distance from the origin of the drawing -- operation to the bottom of the drawn character. horizontal_resolution: INTEGER_32 -- Horizontal resolution of screen for which the font is designed. is_destroyed: BOOLEAN -- Is Current no longer usable? -- (from EV_ANY_I) is_proportional: BOOLEAN -- Can characters in the font have different sizes? maximum_width: INTEGER_32 -- Width of the biggest character in the font. minimum_width: INTEGER_32 -- Width of the smallest character in the font. name: STRING_32 -- Face name chosen by toolkit. 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)) string_size (a_string: READABLE_STRING_GENERAL): TUPLE [width: INTEGER_32; height: INTEGER_32; left_offset: INTEGER_32; right_offset: INTEGER_32] -- [width, height, left_offset, right_offset] in pixels of a_string in the current font, -- taking into account line breaks ('%N'). -- width and height correspond to the rectange used to bound a_string, and -- should be used when placing strings next to each as part of a text. -- On some fonts, characters may extend outside of the bounds given by width and height, -- for example certain italic letters may overhang other letters. Use left_offset and -- right_offset to determine if there is any overhang for a_string. a negative left_offset -- indicates overhang to the left, while a positive right_offset indicates an overhang to the right. -- To determine the complete bounding rectangle for a_string add negative left_offset -- and positive right_offset to width. require -- from EV_FONT_I a_string_not_void: a_string /= Void string_size_no_offset (a_string: READABLE_STRING_GENERAL): TUPLE [width: INTEGER_32; height: INTEGER_32] -- [width, height] in pixels of a_string not taking left or right overhang of string in to account. string_width (a_string: READABLE_STRING_GENERAL): INTEGER_32 -- Width in pixels of a_string in the current font. require -- from EV_FONT_I a_string_not_void: a_string /= Void ensure -- from EV_FONT_I positive: Result >= 0 vertical_resolution: INTEGER_32 -- Vertical resolution of screen for which the font is designed. width: INTEGER_32 -- Character width of current fixed-width font. feature -- Element change copy_font (other: attached like interface) -- Update Current with all attributes of other. -- Redefined on Windows as certain properties of fonts -- cannot be specified completely through the interface of -- EiffelVision2, such as char_set. As we use a single once log font -- internally, the previous charset is still used, and preforming this -- redefinition fixes the char_set issue and is also faster. require -- from EV_FONT_I other_not_void: other /= Void type_identity: same_type (other) set_family (a_family: INTEGER_32) -- Set a_family as preferred font category. require -- from EV_FONT_I a_family_valid: valid_family (a_family) ensure -- from EV_FONT_I family_assigned: family = a_family set_height (a_height: INTEGER_32) -- Set a_height as preferred font size in pixels. require -- from EV_FONT_I a_height_bigger_than_zero: a_height > 0 ensure -- from EV_FONT_I height_assigned: height = a_height set_height_in_points (a_height: INTEGER_32) -- Set a_height_in_points to a_height. require -- from EV_FONT_I a_height_bigger_than_zero: a_height > 0 ensure -- from EV_FONT_I height_assigned: height_in_points = a_height set_shape (a_shape: INTEGER_32) -- Set a_shape as preferred font slant. require -- from EV_FONT_I a_shape_valid: valid_shape (a_shape) ensure -- from EV_FONT_I shape_assigned: shape = a_shape set_values (a_family, a_weight, a_shape, a_height: INTEGER_32; a_preferred_families: like preferred_families) -- Set a_family, a_weight, a_shape a_height and -- a_preferred_faces at the same time for speed. -- (from EV_FONT_I) require -- from EV_FONT_I a_family_valid: valid_family (a_family) a_weight_valid: valid_weight (a_weight) a_shape_valid: valid_shape (a_shape) a_height_bigger_than_zero: a_height > 0 a_preferred_families_not_void: a_preferred_families /= Void set_weight (a_weight: INTEGER_32) -- Set a_weight as preferred font thickness. require -- from EV_FONT_I a_weight_valid: valid_weight (a_weight) ensure -- from EV_FONT_I weight_assigned: weight = a_weight feature -- Duplication copy (other: EV_FONT_IMP) -- Update current object using fields of object attached -- to other, so as to yield equal objects. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_equal: Current ~ other frozen deep_copy (other: EV_FONT_IMP) -- 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: EV_FONT_IMP -- 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: EV_FONT_IMP) -- 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: EV_FONT_IMP -- 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: EV_FONT_IMP -- 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 frozen default: detachable EV_FONT_IMP -- 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 feature -- Basic Operations himetric_to_pixel (a_size_in_himetric: WEL_SIZE): WEL_SIZE -- Convert himetric into pixels. -- (from WEL_UNIT_CONVERSION) require -- from WEL_UNIT_CONVERSION non_void_size: a_size_in_himetric /= Void a_size_in_himetric_exists: a_size_in_himetric.exists ensure -- from WEL_UNIT_CONVERSION non_void_result: Result /= Void logical_to_pixel (hdc: WEL_DC; lo: INTEGER_32): INTEGER_32 -- Convert lo expressed in logical unit into pixel unit. -- (from WEL_UNIT_CONVERSION) require -- from WEL_UNIT_CONVERSION hdc_not_void: hdc /= Void hdc_exists: hdc.exists logical_to_point (hdc: WEL_DC; lo: INTEGER_32): INTEGER_32 -- Convert a size lo expressed in logical unit into point. -- (from WEL_UNIT_CONVERSION) require -- from WEL_UNIT_CONVERSION hdc_not_void: hdc /= Void hdc_exists: hdc.exists map_loghim_to_pixel (x, ppli: INTEGER_32): INTEGER_32 -- Defined as MAP_LOGHIM_TO_PIX in AtlWin.h -- (from WEL_UNIT_CONVERSION) map_pixel_to_loghim (x, ppli: INTEGER_32): INTEGER_32 -- Defined as MAP_PIX_TO_LOGHIM in AtlWin.h -- (from WEL_UNIT_CONVERSION) pixel_to_himetric (a_size_in_pixel: WEL_SIZE): WEL_SIZE -- Convert pixels into himetric. -- (from WEL_UNIT_CONVERSION) require -- from WEL_UNIT_CONVERSION non_void_size: a_size_in_pixel /= Void a_size_in_pixel_exists: a_size_in_pixel.exists ensure -- from WEL_UNIT_CONVERSION non_void_result: Result /= Void pixel_to_logical (hdc: WEL_DC; pi: INTEGER_32): INTEGER_32 -- Convert pi expressed in pixel unit into logical unit. -- (from WEL_UNIT_CONVERSION) require -- from WEL_UNIT_CONVERSION hdc_not_void: hdc /= Void hdc_exists: hdc.exists pixel_to_point (hdc: WEL_DC; pi: INTEGER_32): INTEGER_32 -- Convert a size pi expressed in pixel into point. -- (from WEL_UNIT_CONVERSION) require -- from WEL_UNIT_CONVERSION hdc_not_void: hdc /= Void hdc_exists: hdc.exists point_to_logical (hdc: WEL_DC; pt, divisor: INTEGER_32): INTEGER_32 -- Convert a size pt/divisor expressed in point into logical units. -- (from WEL_UNIT_CONVERSION) require -- from WEL_UNIT_CONVERSION hdc_not_void: hdc /= Void hdc_exists: hdc.exists point_to_pixel (hdc: WEL_DC; pt, divisor: INTEGER_32): INTEGER_32 -- Convert a size pt/divisor expressed in point into pixel. -- (from WEL_UNIT_CONVERSION) require -- from WEL_UNIT_CONVERSION hdc_not_void: hdc /= Void hdc_exists: hdc.exists feature -- Constants Family_modern: INTEGER_32 = 5 -- (from EV_FONT_CONSTANTS) Family_roman: INTEGER_32 = 2 -- (from EV_FONT_CONSTANTS) Family_sans: INTEGER_32 = 3 -- (from EV_FONT_CONSTANTS) Family_screen: INTEGER_32 = 1 -- (from EV_FONT_CONSTANTS) Family_typewriter: INTEGER_32 = 4 -- (from EV_FONT_CONSTANTS) Shape_italic: INTEGER_32 = 11 -- (from EV_FONT_CONSTANTS) Shape_regular: INTEGER_32 = 10 -- (from EV_FONT_CONSTANTS) Weight_black: INTEGER_32 = 9 -- (from EV_FONT_CONSTANTS) Weight_bold: INTEGER_32 = 8 -- (from EV_FONT_CONSTANTS) Weight_regular: INTEGER_32 = 7 -- (from EV_FONT_CONSTANTS) Weight_thin: INTEGER_32 = 6 -- (from EV_FONT_CONSTANTS) feature -- Contract support valid_family (a_family: INTEGER_32): BOOLEAN -- Is a_family a valid family value. -- (from EV_FONT_CONSTANTS) valid_shape (a_shape: INTEGER_32): BOOLEAN -- Is a_shape a valid shape value. -- (from EV_FONT_CONSTANTS) valid_weight (a_weight: INTEGER_32): BOOLEAN -- Is a_weight a valid weight value. -- (from EV_FONT_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 wel_log_font_exists: Wel_log_font /= Void wel_font_exists: wel_font /= Void -- from EV_FONT_I family_valid: is_initialized implies valid_family (family) weight_valid: is_initialized implies valid_weight (weight) shape_valid: is_initialized implies valid_shape (shape) height_bigger_than_zero: is_initialized implies height > 0 ascent_not_negative: is_initialized implies ascent >= 0 descent_not_negative: is_initialized implies descent >= 0 width_of_empty_string_equals_zero: is_initialized implies string_width ("") = 0 -- from EV_ANY_I interface_coupled: is_usable implies interface /= Void and then attached_interface.implementation = Current base_make_called: is_usable implies base_make_called -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) note copyright: "Copyright (c) 1984-2017, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 5949 Hollister Ave., 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 EV_FONT_IMP
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