Add SkTypeface::getVariationDesignParameters

This adds a way for users to query the axis parameters for a typeface.

Change-Id: Idc2ac0d84bc7ae2ca484ae410cba5b01883418e5
Reviewed-on: https://skia-review.googlesource.com/137706
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Reed <reed@google.com>

2 files changed, 21 insertions, 0 deletions

diff --git a/src/core/SkTypeface.cpp b/src/core/SkTypeface.cpp
index 8e90f51a9b..cc0bd3f025 100644
--- a/src/core/SkTypeface.cpp
+++ b/src/core/SkTypeface.cpp
@@ -79,6 +79,11 @@ protected:
     {
         return 0;
     }
+    int onGetVariationDesignParameters(SkFontParameters::Variation::Axis parameters[],
+                                       int parameterCount) const override
+    {
+        return 0;
+    }
     int onGetTableTags(SkFontTableTag tags[]) const override { return 0; }
     size_t onGetTableData(SkFontTableTag, size_t, size_t, void*) const override {
         return 0;
@@ -207,6 +212,12 @@ int SkTypeface::getVariationDesignPosition(
     return this->onGetVariationDesignPosition(coordinates, coordinateCount);
 }
 
+int SkTypeface::getVariationDesignParameters(
+        SkFontParameters::Variation::Axis parameters[], int parameterCount) const
+{
+    return this->onGetVariationDesignParameters(parameters, parameterCount);
+}
+
 int SkTypeface::countTables() const {
     return this->onGetTableTags(nullptr);
 }
@@ -324,6 +335,11 @@ sk_sp<SkTypeface> SkTypeface::onMakeClone(const SkFontArguments& args) const {
     return sk_ref_sp(this);
 }
 
+int SkTypeface::onGetVariationDesignParameters(
+        SkFontParameters::Variation::Axis parameters[], int parameterCount) const {
+    return -1;
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "SkDescriptor.h"
diff --git a/src/core/SkTypeface_remote.h b/src/core/SkTypeface_remote.h
index 1b4ad89025..c751745b0f 100644
--- a/src/core/SkTypeface_remote.h
+++ b/src/core/SkTypeface_remote.h
@@ -82,6 +82,11 @@ protected:
         SK_ABORT("Should never be called.");
         return 0;
     }
+    int onGetVariationDesignParameters(SkFontParameters::Variation::Axis parameters[],
+                                       int parameterCount) const override {
+        SK_ABORT("Should never be called.");
+        return 0;
+    }
     void onGetFamilyName(SkString* familyName) const override {
         // Used by SkStrikeCache::DumpMemoryStatistics.
         *familyName = "";