text: extend Handler interface to expose underlying font cache

gonum · Feb 12, 2021 · dfecc4a · dfecc4a
1 parent b77680a
commit dfecc4a
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Showing 3 changed files with 13 additions and 0 deletions.
diff --git a/text/latex.go b/text/latex.go
@@ -32,6 +32,11 @@ type Latex struct {
 
 var _ Handler = (*Latex)(nil)
 
+// Cache returns the cache of fonts used by the text handler.
+func (hdlr Latex) Cache() *font.Cache {
+	return hdlr.Fonts
+}
+
 // Extents returns the Extents of a font.
 func (hdlr Latex) Extents(fnt font.Font) font.Extents {
 	face := hdlr.Fonts.Lookup(fnt, fnt.Size)

diff --git a/text/plain.go b/text/plain.go
@@ -19,6 +19,11 @@ type Plain struct {
 
 var _ Handler = (*Plain)(nil)
 
+// Cache returns the cache of fonts used by the text handler.
+func (hdlr Plain) Cache() *font.Cache {
+	return hdlr.Fonts
+}
+
 // Extents returns the Extents of a font.
 func (hdlr Plain) Extents(fnt font.Font) font.Extents {
 	face := hdlr.Fonts.Lookup(fnt, fnt.Size)

diff --git a/text/text.go b/text/text.go
@@ -14,6 +14,9 @@ import (
 
 // Handler parses, formats and renders text.
 type Handler interface {
+	// Cache returns the cache of fonts used by the text handler.
+	Cache() *font.Cache
+
 	// Extents returns the Extents of a font.
 	Extents(fnt font.Font) font.Extents