Add m-esr52 at 52.6.0

1 files changed, 72 insertions, 0 deletions

diff --git a/gfx/2d/ScaledFontBase.h b/gfx/2d/ScaledFontBase.h
new file mode 100644
index 000000000..e4bb4f2f8
--- /dev/null
+++ b/gfx/2d/ScaledFontBase.h
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; tab-width: 20; 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_GFX_SCALEDFONTBASE_H_
+#define MOZILLA_GFX_SCALEDFONTBASE_H_
+
+#include "2D.h"
+
+// Skia uses cairo_scaled_font_t as the internal font type in ScaledFont
+#if defined(USE_SKIA) || defined(USE_CAIRO)
+#define USE_CAIRO_SCALED_FONT
+#endif
+
+#ifdef USE_SKIA
+#include "skia/include/core/SkPath.h"
+#include "skia/include/core/SkTypeface.h"
+#endif
+#ifdef USE_CAIRO_SCALED_FONT
+#include "cairo.h"
+#endif
+
+namespace mozilla {
+namespace gfx {
+
+class ScaledFontBase : public ScaledFont
+{
+public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontBase)
+  explicit ScaledFontBase(Float aSize);
+  virtual ~ScaledFontBase();
+
+  virtual already_AddRefed<Path> GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *aTarget);
+
+  virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, const Matrix *aTransformHint);
+
+  virtual void GetGlyphDesignMetrics(const uint16_t* aGlyphIndices, uint32_t aNumGlyphs, GlyphMetrics* aGlyphMetrics);
+
+  float GetSize() { return mSize; }
+
+#ifdef USE_SKIA
+  virtual SkTypeface* GetSkTypeface() { return mTypeface; }
+#endif
+
+  // Not true, but required to instantiate a ScaledFontBase.
+  virtual FontType GetType() const { return FontType::SKIA; }
+
+#ifdef USE_CAIRO_SCALED_FONT
+  bool PopulateCairoScaledFont();
+  cairo_scaled_font_t* GetCairoScaledFont() { return mScaledFont; }
+  void SetCairoScaledFont(cairo_scaled_font_t* font);
+#endif
+
+protected:
+  friend class DrawTargetSkia;
+#ifdef USE_SKIA
+  SkTypeface* mTypeface;
+  SkPath GetSkiaPathForGlyphs(const GlyphBuffer &aBuffer);
+#endif
+#ifdef USE_CAIRO_SCALED_FONT
+  // Overridders should ensure the cairo_font_face_t has been addrefed.
+  virtual cairo_font_face_t* GetCairoFontFace() { return nullptr; }
+  cairo_scaled_font_t* mScaledFont;
+#endif
+  Float mSize;
+};
+
+} // namespace gfx
+} // namespace mozilla
+
+#endif /* MOZILLA_GFX_SCALEDFONTBASE_H_ */