From dcc01f5b01401d454a851b363578141442bf6dda Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Wed, 15 Feb 2017 23:52:16 -0500
Subject: [PATCH] Started putting the typographical features attributes into
 the example program.

---
 examples/drawtext/attributes.c | 69 +++++++++++++++++++++++++++++++++-
 examples/drawtext/main.c       |  7 ++++
 2 files changed, 75 insertions(+), 1 deletion(-)

diff --git a/examples/drawtext/attributes.c b/examples/drawtext/attributes.c
index 9d0c2310..47601933 100644
--- a/examples/drawtext/attributes.c
+++ b/examples/drawtext/attributes.c
@@ -165,7 +165,74 @@ static void setupAttributedString(void)
 
 	uiAttributedStringAppendUnattributed(attrstr, ", ");
 
-	next = "multiple TODO";
+	next = "or any combination of the above";
+	// TODO
+
+	uiAttributedStringAppendUnattributed(attrstr, ". In addition, a variety of typographical features are available (depending on the chosen font) that can be switched on (or off, if the font enables them by default): ");
+
+	next = "fi";
+	uiAttributedStringAppendUnattributed(attrstr, "standard ligatures like f+i (");
+	start = uiAttributedStringLen(attrstr);
+	end = start + strlen(next);
+	uiAttributedStringAppendUnattributed(attrstr, next);
+	spec.Type = uiAttributeStandardLigatures;
+	spec.Value = 1;
+	uiAttributedStringSetAttribute(attrstr, &spec, start, end);
+	uiAttributedStringAppendUnattributed(attrstr, ")");
+
+	uiAttributedStringAppendUnattributed(attrstr, ", ");
+
+	// note the use of RTL embeds to make sure the bidi algorithm doesn't kick in for our demonstration (it will produce incorrect results)
+	// see also: https://www.w3.org/International/articles/inline-bidi-markup/#nomarkup
+	next = "\xD9\x84\xD8\xA7";
+	uiAttributedStringAppendUnattributed(attrstr, "required ligatures like \xE2\x80\xAB\xD9\x84\xE2\x80\xAC+\xE2\x80\xAB\xD8\xA7\xE2\x80\xAC (\xE2\x80\xAB");
+	start = uiAttributedStringLen(attrstr);
+	end = start + strlen(next);
+	uiAttributedStringAppendUnattributed(attrstr, next);
+	spec.Type = uiAttributeRequiredLigatures;
+	spec.Value = 1;
+	uiAttributedStringSetAttribute(attrstr, &spec, start, end);
+	uiAttributedStringAppendUnattributed(attrstr, "\xE2\x80\xAC)");
+
+	uiAttributedStringAppendUnattributed(attrstr, ", ");
+
+	next = "ct";
+	uiAttributedStringAppendUnattributed(attrstr, "discretionary/rare ligatures like c+t (");
+	start = uiAttributedStringLen(attrstr);
+	end = start + strlen(next);
+	uiAttributedStringAppendUnattributed(attrstr, next);
+	spec.Type = uiAttributeDiscretionaryLigatures;
+	spec.Value = 1;
+	uiAttributedStringSetAttribute(attrstr, &spec, start, end);
+	uiAttributedStringAppendUnattributed(attrstr, ")");
+
+	uiAttributedStringAppendUnattributed(attrstr, ", ");
+
+	next = "the";
+	uiAttributedStringAppendUnattributed(attrstr, "contextual ligatures like h+e in the (");
+	start = uiAttributedStringLen(attrstr);
+	end = start + strlen(next);
+	uiAttributedStringAppendUnattributed(attrstr, next);
+	spec.Type = uiAttributeContextualLigatures;
+	spec.Value = 1;
+	uiAttributedStringSetAttribute(attrstr, &spec, start, end);
+	uiAttributedStringAppendUnattributed(attrstr, ")");
+
+	uiAttributedStringAppendUnattributed(attrstr, ", ");
+
+	next = "\xC3\x9F";
+	uiAttributedStringAppendUnattributed(attrstr, "historical ligatures like the decomposition of \xC3\x9F (");
+	start = uiAttributedStringLen(attrstr);
+	end = start + strlen(next);
+	uiAttributedStringAppendUnattributed(attrstr, next);
+	spec.Type = uiAttributeHistoricalLigatures;
+	spec.Value = 1;
+	uiAttributedStringSetAttribute(attrstr, &spec, start, end);
+	uiAttributedStringAppendUnattributed(attrstr, ")");
+
+	uiAttributedStringAppendUnattributed(attrstr, ", ");
+
+	// TODO unicase
 }
 
 static char fontFamily[] = "Times New Roman";
diff --git a/examples/drawtext/main.c b/examples/drawtext/main.c
index 848def89..22b532fe 100644
--- a/examples/drawtext/main.c
+++ b/examples/drawtext/main.c
@@ -5,6 +5,13 @@
 // - occasional segfaults on startup
 // - very rare size attributes in the attributed string example don't terminate for a while, making everything big
 // - very very rare trace/bpt faults on startup
+/*
+objc[14827]: autorelease pool page 0x7feeab88b000 corrupted
+  magic     0xe000007f 0xeea9f2df 0x0000007f 0xeea9f2e0
+  should be 0xa1a1a1a1 0x4f545541 0x454c4552 0x21455341
+  pthread   0x0
+  should be 0x7fff727a1000
+*/
 
 static uiWindow *mainwin;
 static uiBox *box;