Bug 631479. Simple reftests of graphite font handling (if enabled). r…

…=jfkthame

layout/reftests/fonts/graphite/README.txt

@@ -0,0 +1,37 @@
+
+Test fonts with Graphite tables for testing
+
+Original font: League Gothic by League of Moveable Type, converted to TT via FontSquirrel
+
+Kerning, GDEF/GSUB/GPOS info stripped out and the name table edited to
+produce grtest-template.ttx.
+
+Making a test font:
+
+1. Build ttx from template
+  sed -e 's/xxxfontnamexxx/grtestxxx/' grtest-template.ttx >grtestxxx-src.ttx
+
+2. Make the font
+  ttx grtestxxx-src.ttx
+
+3. Edit GDL file
+
+4. Compile the GDL into the ttf
+
+../graphite-compiler.sh -d -v3 -w3521 -w510 font.gdl grtestxxx-src.ttf grtestxxx.ttf
+
+Where graphite-compiler.sh is a script to run the graphite compiler in wine on OSX
+(the compiler is available both as a Windows exe and as source).
+
+Graphite compiler download:
+http://scripts.sil.org/cms/scripts/page.php?item_id=GraphiteCompilerDownload
+
+grtest-simple.ttf
+Simple FAIL ==> PaSs substitution via graphite or via OT with TST1=1
+
+grtest-multipass.ttf
+Several passes where the end result is FAIL ==> PaSs or via OT with TST1=1
+
+grtest-langfeat.ttf
+FAIL ==> PaSs substitution enabled via language or feature settings or via OT with TST1=1
+

layout/reftests/fonts/graphite/grtest-langfeat.gdl

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+#include "stddef.gdh"
+#define LG_USENG 1033
+
+table(glyph)
+clsFail = codepoint("FAIL");
+clsPass = codepoint("PaSs");
+endtable
+
+table (feature)
+
+failtopass 
+{
+  id = "FTPS";
+  name.LG_USENG = string("Pass substitution");
+  default = 0;
+}
+
+failtopass2 
+{
+  id = "FTP2";
+  name.LG_USENG = string("Pass substitution 2");
+  default = 0;
+}
+
+passtofail 
+{
+  id = "PTFL";
+  name.LG_USENG = string("Pass to fail substitution");
+  default = 0;
+}
+
+endtable
+
+table (language)
+
+french {
+  languages = ( "fr" );
+  failtopass = 1;
+}
+
+french2 {
+  languages = ( "fra" );
+  passtofail = 1;
+}
+
+endtable;
+
+table(substitution)
+
+pass(1)
+
+if (failtopass || failtopass2)
+clsFail > clsPass;
+endif;
+
+if (passtofail)
+clsPass > clsFail;
+endif;
+
+endpass;
+
+endtable

layout/reftests/fonts/graphite/grtest-multipass.gdl

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+#include "stddef.gdh"
+
+table(glyph)
+gSpace = codepoint(" ");
+
+gA = codepoint("A");
+gB = codepoint("B");
+gC = codepoint("C");
+gF = codepoint("F");
+gI = codepoint("I");
+gL = codepoint("L");
+gP = codepoint("P");
+gS = codepoint("S");
+ga = codepoint("a");
+gs = codepoint("s");
+g1 = codepoint("1");
+g2 = codepoint("2");
+g3 = codepoint("3");
+g4 = codepoint("4");
+
+clsFail = codepoint("FAIL");
+clsPass = codepoint("PaSs");
+cls1234 = codepoint("1234");
+cls5678 = codepoint("5678");
+endtable
+
+table(substitution)
+
+pass(1)
+clsFail > cls1234;
+endpass;
+
+pass(2)
+cls1234 > @1 @1;
+endpass;
+
+pass(3)
+cls1234 cls1234 > @1 cls5678;
+endpass;
+
+pass(4)
+cls1234 cls5678 > _ clsFail;
+endpass;
+
+pass(5)
+gF gA gI gL > gP ga gS gs;
+endpass;
+
+endtable