gecko-dev/gfx/thebes/gfxCoreTextShaper.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

72 lines
2.6 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_CORETEXTSHAPER_H
#define GFX_CORETEXTSHAPER_H
#include "gfxFont.h"
#include <ApplicationServices/ApplicationServices.h>
class gfxMacFont;
class gfxCoreTextShaper : public gfxFontShaper {
public:
explicit gfxCoreTextShaper(gfxMacFont *aFont);
virtual ~gfxCoreTextShaper();
virtual bool ShapeText(DrawTarget *aDrawTarget,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
bool aVertical,
gfxShapedText *aShapedText);
// clean up static objects that may have been cached
static void Shutdown();
protected:
CTFontRef mCTFont;
// attributes for shaping text with LTR or RTL directionality
CFDictionaryRef mAttributesDictLTR;
CFDictionaryRef mAttributesDictRTL;
nsresult SetGlyphsFromRun(gfxShapedText *aShapedText,
uint32_t aOffset,
uint32_t aLength,
CTRunRef aCTRun,
int32_t aStringOffset);
CTFontRef CreateCTFontWithFeatures(CGFloat aSize,
CTFontDescriptorRef aDescriptor);
CFDictionaryRef CreateAttrDict(bool aRightToLeft);
CFDictionaryRef CreateAttrDictWithoutDirection();
static CTFontDescriptorRef
CreateFontFeaturesDescriptor(const std::pair<SInt16,SInt16> aFeatures[],
size_t aCount);
static CTFontDescriptorRef GetDefaultFeaturesDescriptor();
static CTFontDescriptorRef GetDisableLigaturesDescriptor();
static CTFontDescriptorRef GetIndicFeaturesDescriptor();
static CTFontDescriptorRef GetIndicDisableLigaturesDescriptor();
// cached font descriptor, created the first time it's needed
static CTFontDescriptorRef sDefaultFeaturesDescriptor;
// cached descriptor for adding disable-ligatures setting to a font
static CTFontDescriptorRef sDisableLigaturesDescriptor;
// feature descriptors for buggy Indic AAT font workaround
static CTFontDescriptorRef sIndicFeaturesDescriptor;
static CTFontDescriptorRef sIndicDisableLigaturesDescriptor;
};
#endif /* GFX_CORETEXTSHAPER_H */