Add m-esr52 at 52.6.0

1 files changed, 57 insertions, 0 deletions

diff --git a/gfx/2d/NativeFontResourceDWrite.h b/gfx/2d/NativeFontResourceDWrite.h
new file mode 100644
index 000000000..fc11c7b0d
--- /dev/null
+++ b/gfx/2d/NativeFontResourceDWrite.h
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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_gfx_NativeFontResourceDWrite_h
+#define mozilla_gfx_NativeFontResourceDWrite_h
+
+#include <dwrite.h>
+
+#include "2D.h"
+#include "mozilla/AlreadyAddRefed.h"
+
+namespace mozilla {
+namespace gfx {
+
+class NativeFontResourceDWrite final : public NativeFontResource
+{
+public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(NativeFontResourceDWrite)
+  /**
+   * Creates a NativeFontResourceDWrite if data is valid. Note aFontData will be
+   * copied if required and so can be released after calling.
+   *
+   * @param aFontData the SFNT data.
+   * @param aDataLength length of data.
+   * @param aNeedsCairo whether the ScaledFont created needs a cairo scaled font
+   * @return Referenced NativeFontResourceDWrite or nullptr if invalid.
+   */
+  static already_AddRefed<NativeFontResourceDWrite>
+    Create(uint8_t *aFontData, uint32_t aDataLength, bool aNeedsCairo);
+
+  already_AddRefed<ScaledFont>
+    CreateScaledFont(uint32_t aIndex, Float aGlyphSize,
+                     const uint8_t* aInstanceData, uint32_t aInstanceDataLength) final;
+
+private:
+  NativeFontResourceDWrite(IDWriteFactory *aFactory,
+                           already_AddRefed<IDWriteFontFile> aFontFile,
+                           DWRITE_FONT_FACE_TYPE aFaceType,
+                           uint32_t aNumberOfFaces, bool aNeedsCairo)
+    : mFactory(aFactory), mFontFile(aFontFile), mFaceType(aFaceType)
+    , mNumberOfFaces(aNumberOfFaces), mNeedsCairo(aNeedsCairo)
+  {}
+
+  IDWriteFactory *mFactory;
+  RefPtr<IDWriteFontFile> mFontFile;
+  DWRITE_FONT_FACE_TYPE mFaceType;
+  uint32_t mNumberOfFaces;
+  bool mNeedsCairo;
+};
+
+} // gfx
+} // mozilla
+
+#endif // mozilla_gfx_NativeFontResourceDWrite_h