From 051e1c32ae4f553085adfc7b66e005ef70f62349 Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Tue, 4 Nov 2014 10:53:35 -0800
Subject: [PATCH] Support compound text-anchor values

---
 include/mbgl/style/types.hpp   | 10 +++++++++-
 src/renderer/symbol_bucket.cpp | 17 +++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/include/mbgl/style/types.hpp b/include/mbgl/style/types.hpp
index 36cb39181..2f7ca7683 100644
--- a/include/mbgl/style/types.hpp
+++ b/include/mbgl/style/types.hpp
@@ -157,7 +157,11 @@ enum class TextAnchorType : uint8_t {
     Left,
     Right,
     Top,
-    Bottom
+    Bottom,
+    TopLeft,
+    TopRight,
+    BottomLeft,
+    BottomRight
 };
 
 MBGL_DEFINE_ENUM_CLASS(TextAnchorTypeClass, TextAnchorType, {
@@ -166,6 +170,10 @@ MBGL_DEFINE_ENUM_CLASS(TextAnchorTypeClass, TextAnchorType, {
     { TextAnchorType::Right, "right" },
     { TextAnchorType::Top, "top" },
     { TextAnchorType::Bottom, "bottom" },
+    { TextAnchorType::TopLeft, "top-left" },
+    { TextAnchorType::TopRight, "top-right" },
+    { TextAnchorType::BottomLeft, "bottom-left" },
+    { TextAnchorType::BottomRight, "bottom-right" }
 });
 
 // -------------------------------------------------------------------------------------------------
diff --git a/src/renderer/symbol_bucket.cpp b/src/renderer/symbol_bucket.cpp
index e80f1505b..a00544962 100644
--- a/src/renderer/symbol_bucket.cpp
+++ b/src/renderer/symbol_bucket.cpp
@@ -106,18 +106,35 @@ void SymbolBucket::addFeatures(const VectorTileLayer &layer, const FilterExpress
     float verticalAlign = 0.5;
 
     switch (properties.text.anchor) {
+        case TextAnchorType::Top:
+        case TextAnchorType::Bottom:
         case TextAnchorType::Center:
             break;
         case TextAnchorType::Right:
+        case TextAnchorType::TopRight:
+        case TextAnchorType::BottomRight:
             horizontalAlign = 1;
             break;
         case TextAnchorType::Left:
+        case TextAnchorType::TopLeft:
+        case TextAnchorType::BottomLeft:
             horizontalAlign = 0;
             break;
+    }
+
+    switch (properties.text.anchor) {
+        case TextAnchorType::Left:
+        case TextAnchorType::Right:
+        case TextAnchorType::Center:
+            break;
         case TextAnchorType::Bottom:
+        case TextAnchorType::BottomLeft:
+        case TextAnchorType::BottomRight:
             verticalAlign = 1;
             break;
         case TextAnchorType::Top:
+        case TextAnchorType::TopLeft:
+        case TextAnchorType::TopRight:
             verticalAlign = 0;
             break;
     }