gecko-dev/gfx/thebes/gfxFT2Fonts.h
Nicholas Nethercote 06e901cb9f Bug 1231550 - Use DrawTarget instead of gfxContext and/or nsRenderingContext in many places in font/text code. r=jfkthame.
AutoTextRun now only needs a DrawTarget instead of an nsRenderingContext, and
similar nsRenderingContext/gfxContext-to-DrawTarget replacements can be
propagated a long way up the call graph. This patch replaces 93 occurrences of
nsRenderingContext and 135 occurrences of gfxContext with DrawTarget; that's
13% of them.

The patch is mostly plumbing changes. A couple of not-entirely-plumbing
changes:

- It adds a comment about the null check in
  gfxGlyphExtents::GetTightGlyphExtentsAppUnits().

- A couple of functions simply had an unused gfxContext or nsRenderingContext
  parameter removed, e.g. SetLineBreaks().

--HG--
extra : rebase_source : 8f56994bb4d254a86788b17ab2864ebc758a7e6b
2015-12-15 13:56:41 -08:00

90 lines
2.8 KiB
C++

/* -*- 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_FT2FONTS_H
#define GFX_FT2FONTS_H
#include "mozilla/MemoryReporting.h"
#include "cairo.h"
#include "gfxTypes.h"
#include "gfxFont.h"
#include "gfxFT2FontBase.h"
#include "gfxContext.h"
#include "gfxFontUtils.h"
#include "gfxUserFontSet.h"
class FT2FontEntry;
class gfxFT2Font : public gfxFT2FontBase {
public: // new functions
gfxFT2Font(cairo_scaled_font_t *aCairoFont,
FT2FontEntry *aFontEntry,
const gfxFontStyle *aFontStyle,
bool aNeedsBold);
virtual ~gfxFT2Font ();
FT2FontEntry *GetFontEntry();
struct CachedGlyphData {
CachedGlyphData()
: glyphIndex(0xffffffffU) { }
CachedGlyphData(uint32_t gid)
: glyphIndex(gid) { }
uint32_t glyphIndex;
int32_t lsbDelta;
int32_t rsbDelta;
int32_t xAdvance;
};
const CachedGlyphData* GetGlyphDataForChar(uint32_t ch) {
CharGlyphMapEntryType *entry = mCharGlyphCache.PutEntry(ch);
if (!entry)
return nullptr;
if (entry->mData.glyphIndex == 0xffffffffU) {
// this is a new entry, fill it
FillGlyphDataForChar(ch, &entry->mData);
}
return &entry->mData;
}
virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const;
virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const;
#ifdef USE_SKIA
virtual already_AddRefed<mozilla::gfx::GlyphRenderingOptions>
GetGlyphRenderingOptions(const TextRunDrawParams* aRunParams = nullptr) override;
#endif
protected:
virtual bool ShapeText(DrawTarget *aDrawTarget,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
bool aVertical,
gfxShapedText *aShapedText);
void FillGlyphDataForChar(uint32_t ch, CachedGlyphData *gd);
void AddRange(const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
gfxShapedText *aShapedText);
typedef nsBaseHashtableET<nsUint32HashKey, CachedGlyphData> CharGlyphMapEntryType;
typedef nsTHashtable<CharGlyphMapEntryType> CharGlyphMap;
CharGlyphMap mCharGlyphCache;
};
#endif /* GFX_FT2FONTS_H */