1 files changed, 91 insertions, 0 deletions
diff --git a/gfx/thebes/gfxGDIFont.h b/gfx/thebes/gfxGDIFont.h
new file mode 100644
index 0000000000..505f731a79
--- /dev/null
+++ b/gfx/thebes/gfxGDIFont.h
@@ -0,0 +1,91 @@
+/* -*- 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 GFX_GDIFONT_H
+#define GFX_GDIFONT_H
+
+#include "mozilla/MemoryReporting.h"
+#include "gfxFont.h"
+#include "gfxGDIFontList.h"
+
+#include "nsTHashMap.h"
+#include "nsHashKeys.h"
+
+#include "usp10.h"
+
+class gfxGDIFont final : public gfxFont {
+ public:
+  gfxGDIFont(GDIFontEntry* aFontEntry, const gfxFontStyle* aFontStyle,
+             AntialiasOption anAAOption = kAntialiasDefault);
+
+  HFONT GetHFONT() const { return mFont; }
+
+  already_AddRefed<mozilla::gfx::ScaledFont> GetScaledFont(
+      const TextRunDrawParams& aRunParams) override;
+
+  /* override Measure to add padding for antialiasing */
+  RunMetrics Measure(const gfxTextRun* aTextRun, uint32_t aStart, uint32_t aEnd,
+                     BoundingBoxType aBoundingBoxType,
+                     DrawTarget* aDrawTargetForTightBoundingBox,
+                     Spacing* aSpacing,
+                     mozilla::gfx::ShapedTextFlags aOrientation) override;
+
+  /* required for MathML to suppress effects of ClearType "padding" */
+  gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption) const override;
+
+  // If the font has a cmap table, we handle it purely with harfbuzz;
+  // but if not (e.g. .fon fonts), we'll use a GDI callback to get glyphs.
+  bool ProvidesGetGlyph() const override { return !mFontEntry->HasCmapTable(); }
+
+  uint32_t GetGlyph(uint32_t aUnicode, uint32_t aVarSelector) override;
+
+  bool ProvidesGlyphWidths() const override { return true; }
+
+  // get hinted glyph width in pixels as 16.16 fixed-point value
+  int32_t GetGlyphWidth(uint16_t aGID) override;
+
+  bool GetGlyphBounds(uint16_t aGID, gfxRect* aBounds, bool aTight) override;
+
+  void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                              FontCacheSizes* aSizes) const;
+  void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                              FontCacheSizes* aSizes) const;
+
+  FontType GetType() const override { return FONT_TYPE_GDI; }
+
+ protected:
+  ~gfxGDIFont() override;
+
+  const Metrics& GetHorizontalMetrics() const override { return *mMetrics; }
+
+  bool ShapeText(DrawTarget* aDrawTarget, const char16_t* aText,
+                 uint32_t aOffset, uint32_t aLength, Script aScript,
+                 nsAtom* aLanguage, bool aVertical, RoundingFlags aRounding,
+                 gfxShapedText* aShapedText) override;
+
+  void Initialize();  // creates metrics and Cairo fonts
+
+  // Fill the given LOGFONT record according to our size.
+  // (Synthetic italic is *not* handled here, because GDI may not reliably
+  // use the face we expect if we tweak the lfItalic field, and because we
+  // have generic support for this in gfxFont::Draw instead.)
+  void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize);
+
+  HFONT mFont;
+
+  Metrics* mMetrics;
+  bool mIsBitmap;
+
+  bool mNeedsSyntheticBold;
+
+  // cache of glyph IDs (used for non-sfnt fonts only)
+  mozilla::UniquePtr<nsTHashMap<nsUint32HashKey, uint32_t> > mGlyphIDs;
+  SCRIPT_CACHE mScriptCache;
+
+  // cache of glyph widths in 16.16 fixed-point pixels
+  mozilla::UniquePtr<nsTHashMap<nsUint32HashKey, int32_t> > mGlyphWidths;
+};
+
+#endif /* GFX_GDIFONT_H */