gecko-dev/gfx/thebes/gfxFT2Utils.h
Nathan Froyd 01583602a9 Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout.  The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.

CLOSED TREE makes big refactorings like this a piece of cake.

 # The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
    xargs perl -p -i -e '
 s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
 s/nsRefPtr ?</RefPtr</g;   # handle declarations and variables
'

 # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h

 # Handle nsRefPtr.h itself, a couple places that define constructors
 # from nsRefPtr, and code generators specially.  We do this here, rather
 # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
 # things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
     mfbt/nsRefPtr.h \
     xpcom/glue/nsCOMPtr.h \
     xpcom/base/OwningNonNull.h \
     ipc/ipdl/ipdl/lower.py \
     ipc/ipdl/ipdl/builtin.py \
     dom/bindings/Codegen.py \
     python/lldbutils/lldbutils/utils.py

 # In our indiscriminate substitution above, we renamed
 # nsRefPtrGetterAddRefs, the class behind getter_AddRefs.  Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
    xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'

if [ -d .git ]; then
    git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
    hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi

--HG--
rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 01:24:48 -04:00

95 lines
3.3 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_FT2UTILS_H
#define GFX_FT2UTILS_H
#include "cairo-ft.h"
#include "gfxFT2FontBase.h"
#include "mozilla/Likely.h"
// Rounding and truncation functions for a FreeType fixed point number
// (FT26Dot6) stored in a 32bit integer with high 26 bits for the integer
// part and low 6 bits for the fractional part.
#define FLOAT_FROM_26_6(x) ((x) / 64.0)
#define FLOAT_FROM_16_16(x) ((x) / 65536.0)
#define ROUND_26_6_TO_INT(x) ((x) >= 0 ? ((32 + (x)) >> 6) \
: -((32 - (x)) >> 6))
typedef struct FT_FaceRec_* FT_Face;
class gfxFT2LockedFace {
public:
explicit gfxFT2LockedFace(gfxFT2FontBase *aFont) :
mGfxFont(aFont),
mFace(cairo_ft_scaled_font_lock_face(aFont->CairoScaledFont()))
{ }
~gfxFT2LockedFace()
{
if (mFace) {
cairo_ft_scaled_font_unlock_face(mGfxFont->CairoScaledFont());
}
}
FT_Face get() { return mFace; };
/**
* Get the glyph id for a Unicode character representable by a single
* glyph, or return zero if there is no such glyph. This does no caching,
* so you probably want gfxFcFont::GetGlyph.
*/
uint32_t GetGlyph(uint32_t aCharCode);
/**
* Returns 0 if there is no variation selector cmap subtable.
*/
uint32_t GetUVSGlyph(uint32_t aCharCode, uint32_t aVariantSelector);
void GetMetrics(gfxFont::Metrics* aMetrics, uint32_t* aSpaceGlyph);
// A scale factor for use in converting horizontal metrics from font units
// to pixels.
gfxFloat XScale()
{
if (MOZ_UNLIKELY(!mFace))
return 0.0;
const FT_Size_Metrics& ftMetrics = mFace->size->metrics;
if (FT_IS_SCALABLE(mFace)) {
// Prefer FT_Size_Metrics::x_scale to x_ppem as x_ppem does not
// have subpixel accuracy.
//
// FT_Size_Metrics::x_scale is in 16.16 fixed point format. Its
// (fractional) value is a factor that converts vertical metrics
// from design units to units of 1/64 pixels, so that the result
// may be interpreted as pixels in 26.6 fixed point format.
return FLOAT_FROM_26_6(FLOAT_FROM_16_16(ftMetrics.x_scale));
}
// Not scalable.
// FT_Size_Metrics doc says x_scale is "only relevant for scalable
// font formats".
return gfxFloat(ftMetrics.x_ppem) / gfxFloat(mFace->units_per_EM);
}
protected:
/**
* Get extents for a simple character representable by a single glyph.
* The return value is the glyph id of that glyph or zero if no such glyph
* exists. aExtents is only set when this returns a non-zero glyph id.
*/
uint32_t GetCharExtents(char aChar, cairo_text_extents_t* aExtents);
typedef FT_UInt (*CharVariantFunction)(FT_Face face,
FT_ULong charcode,
FT_ULong variantSelector);
CharVariantFunction FindCharVariantFunction();
RefPtr<gfxFT2FontBase> mGfxFont;
FT_Face mFace;
};
#endif /* GFX_FT2UTILS_H */