qt: fix broken unicode chars on osx 10.10

- qt: avoid hard-coding font names

They may not contain all necessary characters for a language

- qt: fix broken unicode chars on osx 10.10

The default font changed again.

The real fix is to compile qt against a >= 10.8 sdk, but this is simple enough
to backport to 0.10 to avoid having to do that there.

Note: NSAppKitVersionNumber is a double and there's no official value for
NSAppKitVersionNumber10_10. Since == isn't reliable for doubles, use Apple's
guidelines for testing versions here:
https://developer.apple.com/library/mac/releasenotes/AppKit/RN-AppKit/

Chinese and Japanese fonts have been hard-coded as well, otherwise they fail to
show up at all.

- qt: fonts: allow SubstituteFonts to filter based on user's language

SubstituteFonts() has been moved to after app identification so that QSettings
are accessible.

Github-Pull: #5671
Rebased-From: 73cd4edb4f1ff98c20549a609e96fa40834f5e73 52954e6efd373c14736237c4c79769bf00f5dfb8 f5ad78b34af8f50e12fab63b331768b96ec2c779

1 files changed, 1 insertions, 1 deletions

diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index 09c79db2d9..41ff608715 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -107,7 +107,7 @@ namespace GUIUtil
     void openDebugLogfile();
 
     // Replace invalid default fonts with known good ones
-    void SubstituteFonts();
+    void SubstituteFonts(const QString& language);
 
     /** Qt event filter that intercepts ToolTipChange events, and replaces the tooltip with a rich text
       representation if needed. This assures that Qt can word-wrap long tooltip messages.