Add m-esr52 at 52.6.0

1 files changed, 107 insertions, 0 deletions

diff --git a/gfx/thebes/gfxDWriteFonts.h b/gfx/thebes/gfxDWriteFonts.h
new file mode 100644
index 000000000..72ac7a2b5
--- /dev/null
+++ b/gfx/thebes/gfxDWriteFonts.h
@@ -0,0 +1,107 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * 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_WINDOWSDWRITEFONTS_H
+#define GFX_WINDOWSDWRITEFONTS_H
+
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/UniquePtr.h"
+#include <dwrite.h>
+
+#include "gfxFont.h"
+#include "gfxUserFontSet.h"
+#include "cairo-win32.h"
+
+#include "nsDataHashtable.h"
+#include "nsHashKeys.h"
+
+/**
+ * \brief Class representing a font face for a font entry.
+ */
+class gfxDWriteFont : public gfxFont 
+{
+public:
+    gfxDWriteFont(gfxFontEntry *aFontEntry,
+                  const gfxFontStyle *aFontStyle,
+                  bool aNeedsBold = false,
+                  AntialiasOption = kAntialiasDefault);
+    ~gfxDWriteFont();
+
+    virtual gfxFont*
+    CopyWithAntialiasOption(AntialiasOption anAAOption) override;
+
+    virtual uint32_t GetSpaceGlyph() override;
+
+    virtual bool SetupCairoFont(DrawTarget* aDrawTarget) override;
+
+    virtual bool AllowSubpixelAA() override
+    { return mAllowManualShowGlyphs; }
+
+    bool IsValid() const;
+
+    IDWriteFontFace *GetFontFace();
+
+    /* override Measure to add padding for antialiasing */
+    virtual RunMetrics Measure(const gfxTextRun *aTextRun,
+                               uint32_t aStart, uint32_t aEnd,
+                               BoundingBoxType aBoundingBoxType,
+                               DrawTarget *aDrawTargetForTightBoundingBox,
+                               Spacing *aSpacing,
+                               uint16_t aOrientation) override;
+
+    virtual bool ProvidesGlyphWidths() const override;
+
+    virtual int32_t GetGlyphWidth(DrawTarget& aDrawTarget,
+                                  uint16_t aGID) override;
+
+    virtual already_AddRefed<mozilla::gfx::GlyphRenderingOptions>
+    GetGlyphRenderingOptions(const TextRunDrawParams* aRunParams = nullptr) override;
+
+    virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                                        FontCacheSizes* aSizes) const override;
+    virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                                        FontCacheSizes* aSizes) const override;
+
+    virtual FontType GetType() const override { return FONT_TYPE_DWRITE; }
+
+    virtual already_AddRefed<mozilla::gfx::ScaledFont>
+    GetScaledFont(mozilla::gfx::DrawTarget *aTarget) override;
+
+    virtual cairo_scaled_font_t *GetCairoScaledFont() override;
+
+protected:
+    virtual const Metrics& GetHorizontalMetrics() override;
+
+    bool GetFakeMetricsForArialBlack(DWRITE_FONT_METRICS *aFontMetrics);
+
+    void ComputeMetrics(AntialiasOption anAAOption);
+
+    bool HasBitmapStrikeForSize(uint32_t aSize);
+
+    cairo_font_face_t *CairoFontFace();
+
+    gfxFloat MeasureGlyphWidth(uint16_t aGlyph);
+
+    DWRITE_MEASURING_MODE GetMeasuringMode();
+    bool GetForceGDIClassic();
+
+    RefPtr<IDWriteFontFace> mFontFace;
+    cairo_font_face_t *mCairoFontFace;
+
+    Metrics *mMetrics;
+
+    // cache of glyph widths in 16.16 fixed-point pixels
+    mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey,int32_t>> mGlyphWidths;
+
+    uint32_t mSpaceGlyph;
+
+    bool mNeedsOblique;
+    bool mNeedsBold;
+    bool mUseSubpixelPositions;
+    bool mAllowManualShowGlyphs;
+    bool mAzureScaledFontIsCairo;
+};
+
+#endif