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"modula-3-lib". It installs only the shared libraries needed for executing Modula-3 programs. This saves a lot of disk space for people who need to run Modula-3 programs but don't need to build them. The original "modula-3" port now depends on this one, and uses it to install the compiler and the rest of the development system. Also, everything is now built with optimization. I have been testing this for at least a month, and haven't seen any problems from it. It makes the libraries and executables substantially smaller. This new port also includes some hooks that will make SOCKS support possible in the near future.
98 lines
2.9 KiB
Plaintext
98 lines
2.9 KiB
Plaintext
Change the font lookup algorithm to prefer non-scalable fonts when they
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are available. The original algorithm came up with some really ugly
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scaled fonts sometimes, even when an equally suitable unscaled
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alternative was available.
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Index: m3/ui/src/xvbt/XScrnFont.m3
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===================================================================
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RCS file: /home/jdp/m3-cvs/m3/ui/src/xvbt/XScrnFont.m3,v
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retrieving revision 1.1.1.1
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diff -u -r1.1.1.1 XScrnFont.m3
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--- XScrnFont.m3 1996/09/24 05:22:01 1.1.1.1
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+++ XScrnFont.m3 1996/09/24 05:32:38
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@@ -193,12 +193,16 @@
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PROCEDURE FontLookup (orc: FontOracle; name: TEXT): ScrnFont.T
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RAISES {ScrnFont.Failure, TrestleComm.Failure} =
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- VAR s: Ctypes.char_star;
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+ VAR
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+ s: Ctypes.char_star;
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+ uname: TEXT;
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BEGIN
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TRY
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TrestleOnX.Enter(orc.st.trsl);
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TRY
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- s := M3toC.TtoS(name);
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+ uname := FindUnscaled(orc.st.trsl.dpy, name); (* Prefer unscaled font *)
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+ IF uname = NIL THEN uname := name END;
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+ s := M3toC.TtoS(uname);
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VAR xfs := X.XLoadQueryFont(orc.st.trsl.dpy, s);
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BEGIN
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IF xfs = NIL THEN RAISE ScrnFont.Failure END;
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@@ -209,6 +213,65 @@
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END;
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EXCEPT X.Error => RAISE TrestleComm.Failure END;
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END FontLookup;
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+
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+PROCEDURE FindUnscaled(dpy: X.DisplayStar; pat: TEXT): TEXT RAISES {X.Error} =
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+ (* Return the first matching unscaled font, if any. Otherwise return NIL. *)
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+ VAR
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+ s := M3toC.TtoS(pat);
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+ xcount: Ctypes.int;
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+ fonts := X.XListFonts(dpy, s, 32767, ADR(xcount));
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+ fp := fonts;
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+ count: INTEGER := xcount;
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+ xmatch: Ctypes.char_star := NIL;
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+ match: TEXT := NIL;
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+ BEGIN
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+ IF count = 0 THEN
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+ IF fonts # NIL THEN X.XFreeFontNames(fonts) END;
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+ RETURN NIL;
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+ END;
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+
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+ FOR i := 0 TO count - 1 DO (* Search for an unscaled font *)
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+ IF NOT IsScaled(M3toC.StoT(fp^)) THEN
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+ xmatch := fp^;
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+ EXIT;
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+ END;
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+ fp := fp + ADRSIZE(fp^);
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+ END;
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+
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+ IF xmatch # NIL THEN (* Found an unscaled font *)
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+ match := M3toC.CopyStoT(xmatch);
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+ END;
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+ X.XFreeFontNames(fonts);
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+ RETURN match;
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+ END FindUnscaled;
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+
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+PROCEDURE IsScaled(name: TEXT): BOOLEAN =
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+ (* Return true if font is scaled. *)
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+ VAR
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+ len := Text.Length(name);
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+ fieldNum := 0;
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+ found0 := FALSE;
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+ hyphenPos: INTEGER;
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+ BEGIN
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+ (* A font is scaled if:
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+ a. it is in canonical form (starts with '-', and all 14 XLFD fields
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+ are present), and
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+ b. any of the fields pixel size, point size, or average width is 0. *)
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+ hyphenPos := Text.FindChar(name, '-', 0);
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+ WHILE hyphenPos # -1 DO
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+ INC(fieldNum);
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+ IF fieldNum = 7 OR fieldNum = 8 OR fieldNum = 12 THEN
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+ IF hyphenPos+2 < len AND
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+ Text.GetChar(name, hyphenPos+1) = '0' AND
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+ Text.GetChar(name, hyphenPos+2) = '-' THEN
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+ found0 := TRUE;
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+ END;
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+ END;
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+ hyphenPos := Text.FindChar(name, '-', hyphenPos+1);
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+ END;
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+
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+ RETURN fieldNum = 14 AND Text.GetChar(name, 0) = '-' AND found0;
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+ END IsScaled;
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CONST
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BuiltInNames = ARRAY OF
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