Font variations.

Multiple Master and TrueType fonts support variation axes.
This implements back-end support for axes on platforms which
support it.

Committed: https://skia.googlesource.com/skia/+/05773ed30920c0214d1433c07cf6360a05476c97

Review URL: https://codereview.chromium.org/1027373002

1 files changed, 9 insertions, 1 deletions

diff --git a/src/ports/SkFontHost_FreeType_common.h b/src/ports/SkFontHost_FreeType_common.h
index 857d2c8990..8ae872c1da 100644
--- a/src/ports/SkFontHost_FreeType_common.h
+++ b/src/ports/SkFontHost_FreeType_common.h
@@ -43,9 +43,17 @@ public:
     public:
         Scanner();
         ~Scanner();
+        struct AxisDefinition {
+            SkFourByteTag fTag;
+            SkFixed fMinimum;
+            SkFixed fDefault;
+            SkFixed fMaximum;
+        };
+        using AxisDefinitions = SkSTArray<4, AxisDefinition, true>;
         bool recognizedFont(SkStream* stream, int* numFonts) const;
         bool scanFont(SkStream* stream, int ttcIndex,
-                      SkString* name, SkFontStyle* style, bool* isFixedPitch) const;
+                      SkString* name, SkFontStyle* style, bool* isFixedPitch,
+                      AxisDefinitions* axes) const;
     private:
         FT_Face openFace(SkStream* stream, int ttcIndex, FT_Stream ftStream) const;
         FT_Library fLibrary;