From 951e8a52aec860ad59bc15de534e1391bca4b923 Mon Sep 17 00:00:00 2001
From: Konstantin Ritt <ritt.ks@gmail.com>
Date: Tue, 24 Mar 2015 03:22:38 +0400
Subject: Detect Thai writing system support from the font's Code Page
 Bitfields

https://msdn.microsoft.com/en-us/library/windows/desktop/dd317754(v=vs.85).aspx

Change-Id: I893746210dc71b9de6f6c064fd9fcaf6340e3c71
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>
---
 src/gui/text/qplatformfontdatabase.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/gui')

diff --git a/src/gui/text/qplatformfontdatabase.cpp b/src/gui/text/qplatformfontdatabase.cpp
index 3c3000da4d..eec9dd905e 100644
--- a/src/gui/text/qplatformfontdatabase.cpp
+++ b/src/gui/text/qplatformfontdatabase.cpp
@@ -522,6 +522,7 @@ enum {
     VietnameseCsbBit = 8,
     SimplifiedChineseCsbBit = 18,
     TraditionalChineseCsbBit = 20,
+    ThaiCsbBit = 16,
     JapaneseCsbBit = 17,
     KoreanCsbBit = 19,
     KoreanJohabCsbBit = 21
@@ -579,6 +580,11 @@ QSupportedWritingSystems QPlatformFontDatabase::writingSystemsFromTrueTypeBits(q
         hasScript = true;
         //qDebug("font %s supports Arabic", familyName.latin1());
     }
+    if (codePageRange[0] & (1 << ThaiCsbBit)) {
+        writingSystems.setSupported(QFontDatabase::Thai);
+        hasScript = true;
+        //qDebug("font %s supports Thai", familyName.latin1());
+    }
     if (codePageRange[0] & (1 << VietnameseCsbBit)) {
         writingSystems.setSupported(QFontDatabase::Vietnamese);
         hasScript = true;
-- 
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