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(*
Copyright (c) 2001, 2015
David C.J. Matthews
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License version 2.1 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*)
structure FontBase =
struct
local
open Foreign Base
in
datatype OutputQuality =
DEFAULT_QUALITY | DRAFT_QUALITY | PROOF_QUALITY | ANTIALIASED_QUALITY | CLEARTYPE_QUALITY | NONANTIALIASED_QUALITY
local
val tab = [
(DEFAULT_QUALITY, 0w0: Word8.word),
(DRAFT_QUALITY, 0w1),
(PROOF_QUALITY, 0w2),
(NONANTIALIASED_QUALITY, 0w3),
(ANTIALIASED_QUALITY, 0w4),
(CLEARTYPE_QUALITY, 0w5)
]
in
val (outQualToW8, outQualFromW8) = tableLookup(tab, NONE)
end
datatype CharacterSet = ANSI_CHARSET | DEFAULT_CHARSET | SYMBOL_CHARSET | MAC_CHARSET |
SHIFTJIS_CHARSET | HANGEUL_CHARSET | JOHAB_CHARSET | GB2312_CHARSET |
CHINESEBIG5_CHARSET | GREEK_CHARSET | TURKISH_CHARSET | VIETNAMESE_CHARSET |
HEBREW_CHARSET | ARABIC_CHARSET | BALTIC_CHARSET | RUSSIAN_CHARSET |
THAI_CHARSET | EASTEUROPE_CHARSET | OEM_CHARSET
local
val tab = [
(ANSI_CHARSET, 0wx00: Word8.word),
(DEFAULT_CHARSET, 0wx01),
(SYMBOL_CHARSET, 0wx02),
(MAC_CHARSET, 0wx4D),
(SHIFTJIS_CHARSET, 0wx80),
(HANGEUL_CHARSET, 0wx81),
(JOHAB_CHARSET, 0wx82),
(GB2312_CHARSET, 0wx86),
(CHINESEBIG5_CHARSET, 0wx88),
(GREEK_CHARSET, 0wxA1),
(TURKISH_CHARSET, 0wxA2),
(VIETNAMESE_CHARSET, 0wxA3),
(HEBREW_CHARSET, 0wxB1),
(ARABIC_CHARSET, 0wxB2),
(BALTIC_CHARSET, 0wxBA),
(RUSSIAN_CHARSET, 0wxCC),
(THAI_CHARSET, 0wxDE),
(EASTEUROPE_CHARSET, 0wxEE),
(OEM_CHARSET, 0wxff)
]
in
val (charsetToW8, charsetFromW8) = tableLookup(tab, NONE)
end
(* In the underlying CreateFont call the pitch and family are ORed together. *)
(*TYPE: FontFamily *)
datatype FontFamily = FF_DONTCARE | FF_ROMAN | FF_SWISS | FF_MODERN |
FF_SCRIPT| FF_DECORATIVE
and FontPitch = DEFAULT_PITCH | FIXED_PITCH | VARIABLE_PITCH
local
open Word8
val tab1 = [
(DEFAULT_PITCH, 0w0),
(FIXED_PITCH, 0w1),
(VARIABLE_PITCH, 0w2)]
and tab2 = [
(FF_DONTCARE, 0wx00 (* (0<<4) Don't care or don't know. *)),
(FF_ROMAN, 0wx10 (* (1<<4) Variable stroke width, serifed. *)),
(FF_SWISS, 0wx20 (* (2<<4) Variable stroke width, sans~serifed. *)),
(FF_MODERN, 0wx30 (* (3<<4) Constant stroke width, serifed or sans~serifed. *)),
(FF_SCRIPT, 0wx40 (* (4<<4) Cursive, etc. *)),
(FF_DECORATIVE, 0wx50 (* (5<<4) Old English, etc. *))]
val (fromPitch, toPitch) = tableLookup(tab1, NONE)
and (fromFamily, toFamily) = tableLookup(tab2, NONE)
in
val toFamily = toFamily (* This is used in GetTextMetrics. *)
fun pitchAndFamilyToW8 (pitch, family) = orb(fromPitch pitch, fromFamily family)
fun pitchAndFamilyFromW8 i = (toPitch(andb(i, 0w3)), toFamily(andb(i, 0wxf0)))
end
(*TYPE: FontWeight - This type is really int, not an abstract type. *)
type FontWeight = int
(* Values between 0 and 1000 *)
(*val FONTWEIGHT = cLong*) (* It's int for CreateFont but LONG for LONGFONT. *)
val FW_DONTCARE = 0
val FW_THIN = 100
val FW_EXTRALIGHT = 200
val FW_LIGHT = 300
val FW_NORMAL = 400
val FW_MEDIUM = 500
val FW_SEMIBOLD = 600
val FW_BOLD = 700
val FW_EXTRABOLD = 800
val FW_HEAVY = 900
val FW_ULTRALIGHT = FW_EXTRALIGHT
val FW_REGULAR = FW_NORMAL
val FW_DEMIBOLD = FW_SEMIBOLD
val FW_ULTRABOLD = FW_EXTRABOLD
val FW_BLACK = FW_HEAVY
datatype OutputPrecision = OUT_DEFAULT_PRECIS | OUT_STRING_PRECIS |
OUT_CHARACTER_PRECIS | OUT_STROKE_PRECIS | OUT_TT_PRECIS | OUT_DEVICE_PRECIS |
OUT_RASTER_PRECIS | OUT_TT_ONLY_PRECIS | OUT_OUTLINE_PRECIS |
OUT_SCREEN_OUTLINE_PRECIS
local
val tab = [
(OUT_DEFAULT_PRECIS, 0w0: Word8.word),
(OUT_STRING_PRECIS, 0w1),
(OUT_CHARACTER_PRECIS, 0w2),
(OUT_STROKE_PRECIS, 0w3),
(OUT_TT_PRECIS, 0w4),
(OUT_DEVICE_PRECIS, 0w5),
(OUT_RASTER_PRECIS, 0w6),
(OUT_TT_ONLY_PRECIS, 0w7),
(OUT_OUTLINE_PRECIS, 0w8),
(OUT_SCREEN_OUTLINE_PRECIS, 0w9)
]
in
val (outPrecToW8, outPrecFromW8) = tableLookup(tab, NONE)
end
(* TODO: This is a bit set. *)
datatype ClippingPrecision =
CLIP_DEFAULT_PRECIS | CLIP_STROKE_PRECIS | CLIP_LH_ANGLES | CLIP_DFA_DISABLE | CLIP_EMBEDDED
(* CLIP_CHARACTER_PRECIS and CLIP_TT_ALWAYS "should not be used"
[CLIP_DEFAULT_PRECIS] is the same as [] i.e. zero. *)
local
val tab = [
(CLIP_DEFAULT_PRECIS, 0wx0),
(CLIP_STROKE_PRECIS, 0wx2),
(CLIP_LH_ANGLES, 0wx10),
(CLIP_DFA_DISABLE, 0w40),
(CLIP_EMBEDDED, 0w80)
]
in
val (clipPrecSetToW32, clipPrecSetFromW32) = tableSetLookup(tab, NONE)
end
type LOGFONT =
{
height : int,
width : int,
escapement : int,
orientation : int,
weight : FontWeight,
italic : bool,
underline : bool,
strikeOut : bool,
charSet : CharacterSet,
outputPrecision: OutputPrecision,
clipPrecision : ClippingPrecision list,
quality : OutputQuality,
pitch: FontPitch,
family: FontFamily,
faceName : string
}
local
val cLogFont =
cStruct14(cLong, cLong, cLong, cLong, cLong, cUint8w, cUint8w, cUint8w, cUint8w,
cUint8w, cUint8w, cUint8w, cUint8w, cCHARARRAY 32)
fun chToB 0w0 = false | chToB _ = true
fun bToch false = 0w0 | bToch true = 0w1
fun toLF(height, width, escapement, orientation, weight, italic, underline,
strikeOut, charSet, outputPrecision, clipPrecision, quality,
pitchFamily, faceName) : LOGFONT =
let
val (pitch, family) = pitchAndFamilyFromW8 pitchFamily
in
{height = height, width = width, escapement = escapement,
orientation = orientation, weight = weight, italic = chToB italic,
underline = chToB underline, strikeOut = chToB strikeOut,
charSet = charsetFromW8 charSet,
outputPrecision = outPrecFromW8 outputPrecision,
clipPrecision = clipPrecSetFromW32(Word32.fromLargeWord(Word8.toLargeWord clipPrecision)),
quality = outQualFromW8 quality, pitch = pitch, family = family,
faceName = faceName}
end
fun fromLF ({height, width, escapement, orientation, weight, italic, underline,
strikeOut, charSet, outputPrecision, clipPrecision, quality,
pitch, family, faceName}: LOGFONT) =
let
val pitchFamily = pitchAndFamilyToW8(pitch, family)
in
(height, width, escapement, orientation, weight, bToch italic,
bToch underline, bToch strikeOut, charsetToW8 charSet,
outPrecToW8 outputPrecision,
Word8.fromLargeWord(Word32.toLargeWord (clipPrecSetToW32 clipPrecision)),
outQualToW8 quality, pitchFamily, faceName)
end
in
val cLOGFONT = absConversion{abs=toLF, rep=fromLF} cLogFont
end
end
end;
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