1 files changed, 89 insertions, 0 deletions
diff --git a/dom/canvas/TextMetrics.h b/dom/canvas/TextMetrics.h
new file mode 100644
index 0000000000..6453705fff
--- /dev/null
+++ b/dom/canvas/TextMetrics.h
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_TextMetrics_h
+#define mozilla_dom_TextMetrics_h
+
+#include "mozilla/dom/CanvasRenderingContext2DBinding.h"
+#include "mozilla/dom/NonRefcountedDOMObject.h"
+
+namespace mozilla::dom {
+
+class TextMetrics final : public NonRefcountedDOMObject {
+ public:
+  explicit TextMetrics(double aWidth, double aActualBoundingBoxLeft,
+                       double aActualBoundingBoxRight,
+                       double aFontBoundingBoxAscent,
+                       double aFontBoundingBoxDescent,
+                       double aActualBoundingBoxAscent,
+                       double aActualBoundingBoxDescent, double aEmHeightAscent,
+                       double aEmHeightDescent, double aHangingBaseline,
+                       double aAlphabeticBaseline, double aIdeographicBaseline)
+      : width(aWidth),
+        actualBoundingBoxLeft(aActualBoundingBoxLeft),
+        actualBoundingBoxRight(aActualBoundingBoxRight),
+        fontBoundingBoxAscent(aFontBoundingBoxAscent),
+        fontBoundingBoxDescent(aFontBoundingBoxDescent),
+        actualBoundingBoxAscent(aActualBoundingBoxAscent),
+        actualBoundingBoxDescent(aActualBoundingBoxDescent),
+        emHeightAscent(aEmHeightAscent),
+        emHeightDescent(aEmHeightDescent),
+        hangingBaseline(aHangingBaseline),
+        alphabeticBaseline(aAlphabeticBaseline),
+        ideographicBaseline(aIdeographicBaseline) {
+    MOZ_COUNT_CTOR(TextMetrics);
+  }
+
+  MOZ_COUNTED_DTOR(TextMetrics)
+
+  double Width() const { return width; }
+
+  double ActualBoundingBoxLeft() const { return actualBoundingBoxLeft; }
+
+  double ActualBoundingBoxRight() const { return actualBoundingBoxRight; }
+
+  // y-direction
+
+  double FontBoundingBoxAscent() const { return fontBoundingBoxAscent; }
+
+  double FontBoundingBoxDescent() const { return fontBoundingBoxDescent; }
+
+  double ActualBoundingBoxAscent() const { return actualBoundingBoxAscent; }
+
+  double ActualBoundingBoxDescent() const { return actualBoundingBoxDescent; }
+
+  double EmHeightAscent() const { return emHeightAscent; }
+
+  double EmHeightDescent() const { return emHeightDescent; }
+
+  double HangingBaseline() const { return hangingBaseline; }
+
+  double AlphabeticBaseline() const { return alphabeticBaseline; }
+
+  double IdeographicBaseline() const { return ideographicBaseline; }
+
+  bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
+                  JS::MutableHandle<JSObject*> aReflector) {
+    return TextMetrics_Binding::Wrap(aCx, this, aGivenProto, aReflector);
+  }
+
+ private:
+  double width;
+  double actualBoundingBoxLeft;
+  double actualBoundingBoxRight;
+  double fontBoundingBoxAscent;
+  double fontBoundingBoxDescent;
+  double actualBoundingBoxAscent;
+  double actualBoundingBoxDescent;
+  double emHeightAscent;
+  double emHeightDescent;
+  double hangingBaseline;
+  double alphabeticBaseline;
+  double ideographicBaseline;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_TextMetrics_h