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gfx/thebes/gfxFT2Fonts.h@6474c204b198 (annotated)

gfx/thebes/gfxFT2Fonts.h

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0	2	* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	#ifndef GFX_FT2FONTS_H
michael@0	7	#define GFX_FT2FONTS_H
michael@0	8
michael@0	9	#include "mozilla/MemoryReporting.h"
michael@0	10	#include "cairo.h"
michael@0	11	#include "gfxTypes.h"
michael@0	12	#include "gfxFont.h"
michael@0	13	#include "gfxFT2FontBase.h"
michael@0	14	#include "gfxContext.h"
michael@0	15	#include "gfxFontUtils.h"
michael@0	16	#include "gfxUserFontSet.h"
michael@0	17
michael@0	18	class FT2FontEntry;
michael@0	19
michael@0	20	class gfxFT2Font : public gfxFT2FontBase {
michael@0	21	public: // new functions
michael@0	22	gfxFT2Font(cairo_scaled_font_t *aCairoFont,
michael@0	23	FT2FontEntry *aFontEntry,
michael@0	24	const gfxFontStyle *aFontStyle,
michael@0	25	bool aNeedsBold);
michael@0	26	virtual ~gfxFT2Font ();
michael@0	27
michael@0	28	FT2FontEntry *GetFontEntry();
michael@0	29
michael@0	30	static already_AddRefed<gfxFT2Font>
michael@0	31	GetOrMakeFont(const nsAString& aName, const gfxFontStyle *aStyle,
michael@0	32	bool aNeedsBold = false);
michael@0	33
michael@0	34	static already_AddRefed<gfxFT2Font>
michael@0	35	GetOrMakeFont(FT2FontEntry *aFontEntry, const gfxFontStyle *aStyle,
michael@0	36	bool aNeedsBold = false);
michael@0	37
michael@0	38	struct CachedGlyphData {
michael@0	39	CachedGlyphData()
michael@0	40	: glyphIndex(0xffffffffU) { }
michael@0	41
michael@0	42	CachedGlyphData(uint32_t gid)
michael@0	43	: glyphIndex(gid) { }
michael@0	44
michael@0	45	uint32_t glyphIndex;
michael@0	46	int32_t lsbDelta;
michael@0	47	int32_t rsbDelta;
michael@0	48	int32_t xAdvance;
michael@0	49	};
michael@0	50
michael@0	51	const CachedGlyphData* GetGlyphDataForChar(uint32_t ch) {
michael@0	52	CharGlyphMapEntryType *entry = mCharGlyphCache.PutEntry(ch);
michael@0	53
michael@0	54	if (!entry)
michael@0	55	return nullptr;
michael@0	56
michael@0	57	if (entry->mData.glyphIndex == 0xffffffffU) {
michael@0	58	// this is a new entry, fill it
michael@0	59	FillGlyphDataForChar(ch, &entry->mData);
michael@0	60	}
michael@0	61
michael@0	62	return &entry->mData;
michael@0	63	}
michael@0	64
michael@0	65	virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
michael@0	66	FontCacheSizes* aSizes) const;
michael@0	67	virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
michael@0	68	FontCacheSizes* aSizes) const;
michael@0	69
michael@0	70	#ifdef USE_SKIA
michael@0	71	virtual mozilla::TemporaryRef<mozilla::gfx::GlyphRenderingOptions> GetGlyphRenderingOptions();
michael@0	72	#endif
michael@0	73
michael@0	74	protected:
michael@0	75	virtual bool ShapeText(gfxContext *aContext,
michael@0	76	const char16_t *aText,
michael@0	77	uint32_t aOffset,
michael@0	78	uint32_t aLength,
michael@0	79	int32_t aScript,
michael@0	80	gfxShapedText *aShapedText,
michael@0	81	bool aPreferPlatformShaping);
michael@0	82
michael@0	83	void FillGlyphDataForChar(uint32_t ch, CachedGlyphData *gd);
michael@0	84
michael@0	85	void AddRange(const char16_t *aText,
michael@0	86	uint32_t aOffset,
michael@0	87	uint32_t aLength,
michael@0	88	gfxShapedText *aShapedText);
michael@0	89
michael@0	90	typedef nsBaseHashtableET<nsUint32HashKey, CachedGlyphData> CharGlyphMapEntryType;
michael@0	91	typedef nsTHashtable<CharGlyphMapEntryType> CharGlyphMap;
michael@0	92	CharGlyphMap mCharGlyphCache;
michael@0	93	};
michael@0	94
michael@0	95	#ifndef ANDROID // not needed on Android, uses the standard gfxFontGroup directly
michael@0	96	class gfxFT2FontGroup : public gfxFontGroup {
michael@0	97	public: // new functions
michael@0	98	gfxFT2FontGroup (const nsAString& families,
michael@0	99	const gfxFontStyle *aStyle,
michael@0	100	gfxUserFontSet *aUserFontSet);
michael@0	101	virtual ~gfxFT2FontGroup ();
michael@0	102
michael@0	103	protected: // from gfxFontGroup
michael@0	104
michael@0	105	virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle);
michael@0	106
michael@0	107
michael@0	108	protected: // new functions
michael@0	109
michael@0	110	static bool FontCallback (const nsAString & fontName,
michael@0	111	const nsACString & genericName,
michael@0	112	bool aUseFontSet,
michael@0	113	void *closure);
michael@0	114	bool mEnableKerning;
michael@0	115
michael@0	116	void GetPrefFonts(nsIAtom *aLangGroup,
michael@0	117	nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
michael@0	118	void GetCJKPrefFonts(nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
michael@0	119	void FamilyListToArrayList(const nsString& aFamilies,
michael@0	120	nsIAtom *aLangGroup,
michael@0	121	nsTArray<nsRefPtr<gfxFontEntry> > *aFontEntryList);
michael@0	122	already_AddRefed<gfxFT2Font> WhichFontSupportsChar(const nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList,
michael@0	123	uint32_t aCh);
michael@0	124	already_AddRefed<gfxFont> WhichPrefFontSupportsChar(uint32_t aCh);
michael@0	125	already_AddRefed<gfxFont>
michael@0	126	WhichSystemFontSupportsChar(uint32_t aCh, int32_t aRunScript);
michael@0	127
michael@0	128	nsTArray<gfxTextRange> mRanges;
michael@0	129	nsString mString;
michael@0	130	};
michael@0	131	#endif // !ANDROID
michael@0	132
michael@0	133	#endif /* GFX_FT2FONTS_H */
michael@0	134