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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /gfx/thebes/gfxGDIFont.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/gfx/thebes/gfxGDIFont.h b/gfx/thebes/gfxGDIFont.h
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+/* -*- 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_GDIFONT_H
+#define GFX_GDIFONT_H
+
+#include "mozilla/MemoryReporting.h"
+#include "gfxFont.h"
+#include "gfxGDIFontList.h"
+
+#include "nsDataHashtable.h"
+#include "nsHashKeys.h"
+
+#include "cairo.h"
+#include "usp10.h"
+
+class gfxGDIFont : public gfxFont
+{
+public:
+ gfxGDIFont(GDIFontEntry *aFontEntry,
+ const gfxFontStyle *aFontStyle,
+ bool aNeedsBold,
+ AntialiasOption anAAOption = kAntialiasDefault);
+
+ virtual ~gfxGDIFont();
+
+ HFONT GetHFONT() { return mFont; }
+
+ cairo_font_face_t *CairoFontFace() { return mFontFace; }
+ cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; }
+
+ /* overrides for the pure virtual methods in gfxFont */
+ virtual uint32_t GetSpaceGlyph() override;
+
+ virtual bool SetupCairoFont(DrawTarget* aDrawTarget) override;
+
+ /* 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;
+
+ /* required for MathML to suppress effects of ClearType "padding" */
+ virtual gfxFont*
+ CopyWithAntialiasOption(AntialiasOption anAAOption) 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.
+ virtual bool ProvidesGetGlyph() const override {
+ return !mFontEntry->HasCmapTable();
+ }
+
+ virtual uint32_t GetGlyph(uint32_t aUnicode,
+ uint32_t aVarSelector) override;
+
+ virtual bool ProvidesGlyphWidths() const override { return true; }
+
+ // get hinted glyph width in pixels as 16.16 fixed-point value
+ virtual int32_t GetGlyphWidth(DrawTarget& aDrawTarget,
+ uint16_t aGID) override;
+
+ virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+ FontCacheSizes* aSizes) const;
+ virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+ FontCacheSizes* aSizes) const;
+
+ virtual FontType GetType() const override { return FONT_TYPE_GDI; }
+
+protected:
+ virtual const Metrics& GetHorizontalMetrics() override;
+
+ /* override to ensure the cairo font is set up properly */
+ virtual bool ShapeText(DrawTarget *aDrawTarget,
+ const char16_t *aText,
+ uint32_t aOffset,
+ uint32_t aLength,
+ Script aScript,
+ bool aVertical,
+ gfxShapedText *aShapedText) override;
+
+ void Initialize(); // creates metrics and Cairo fonts
+
+ // Fill the given LOGFONT record according to our style, but don't adjust
+ // the lfItalic field if we're going to use a cairo transform for fake
+ // italics.
+ void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize, bool aUseGDIFakeItalic);
+
+ HFONT mFont;
+ cairo_font_face_t *mFontFace;
+
+ Metrics *mMetrics;
+ uint32_t mSpaceGlyph;
+
+ bool mNeedsBold;
+
+ // cache of glyph IDs (used for non-sfnt fonts only)
+ mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey,uint32_t> > mGlyphIDs;
+ SCRIPT_CACHE mScriptCache;
+
+ // cache of glyph widths in 16.16 fixed-point pixels
+ mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey,int32_t> > mGlyphWidths;
+};
+
+#endif /* GFX_GDIFONT_H */