aboutsummaryrefslogtreecommitdiffhomepage
path: root/include/core/SkTypeface.h
diff options
context:
space:
mode:
authorGravatar Ben Wagner <bungeman@google.com>2018-06-26 11:22:37 -0400
committerGravatar Skia Commit-Bot <skia-commit-bot@chromium.org>2018-07-12 17:30:20 +0000
commite346b1eea442065261c14f92b304031e1330e491 (patch)
treeac71ca13242dad662d3bf157370c943596ce4dd0 /include/core/SkTypeface.h
parenta4704078b9d7f6c86cdd29c80840bfc4f15bea1a (diff)
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>
Diffstat (limited to 'include/core/SkTypeface.h')
-rw-r--r--include/core/SkTypeface.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/core/SkTypeface.h b/include/core/SkTypeface.h
index 4118152dea..51f339ccfa 100644
--- a/include/core/SkTypeface.h
+++ b/include/core/SkTypeface.h
@@ -11,6 +11,7 @@
#include "../private/SkOnce.h"
#include "../private/SkWeakRefCnt.h"
#include "SkFontArguments.h"
+#include "SkFontParameters.h"
#include "SkFontStyle.h"
#include "SkRect.h"
#include "SkString.h"
@@ -71,6 +72,20 @@ public:
int getVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[],
int coordinateCount) const;
+ /** Copy into 'parameters' (allocated by the caller) the design variation parameters.
+ *
+ * @param parameters the buffer into which to write the design variation parameters.
+ * @param coordinateCount the number of entries available through 'parameters'.
+ *
+ * @return The number of axes, or -1 if there is an error.
+ * If 'parameters != nullptr' and 'parameterCount >= numAxes' then 'parameters' will be
+ * filled with the variation parameters describing the position of this typeface in design
+ * variation space. It is possible the number of axes can be retrieved but actual parameters
+ * cannot.
+ */
+ int getVariationDesignParameters(SkFontParameters::Variation::Axis parameters[],
+ int parameterCount) const;
+
/** Return a 32bit value for this typeface, unique for the underlying font
data. Will never return 0.
*/
@@ -341,6 +356,9 @@ protected:
SkFontArguments::VariationPosition::Coordinate coordinates[],
int coordinateCount) const = 0;
+ virtual int onGetVariationDesignParameters(
+ SkFontParameters::Variation::Axis parameters[], int parameterCount) const;
+
virtual void onGetFontDescriptor(SkFontDescriptor*, bool* isLocal) const = 0;
virtual int onCharsToGlyphs(const void* chars, Encoding, SkGlyphID glyphs[],