зеркало из https://github.com/mozilla/gecko-dev.git
83 строки
2.5 KiB
C++
83 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ScaledFontMac.h"
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#ifdef USE_SKIA
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#include "PathSkia.h"
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#include "skia/SkPaint.h"
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#include "skia/SkPath.h"
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#include "skia/SkTypeface_mac.h"
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#endif
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#include "DrawTargetCG.h"
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#include <vector>
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// prototype for private API
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extern "C" {
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CGPathRef CGFontGetGlyphPath(CGFontRef fontRef, CGAffineTransform *textTransform, int unknown, CGGlyph glyph);
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};
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namespace mozilla {
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namespace gfx {
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ScaledFontMac::ScaledFontMac(CGFontRef aFont, Float aSize)
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: ScaledFontBase(aSize)
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{
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// XXX: should we be taking a reference
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mFont = CGFontRetain(aFont);
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}
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ScaledFontMac::~ScaledFontMac()
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{
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CGFontRelease(mFont);
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}
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#ifdef USE_SKIA
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SkTypeface* ScaledFontMac::GetSkTypeface()
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{
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if (!mTypeface) {
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CTFontRef fontFace = CTFontCreateWithGraphicsFont(mFont, mSize, NULL, NULL);
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mTypeface = SkCreateTypefaceFromCTFont(fontFace);
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CFRelease(fontFace);
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}
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return mTypeface;
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}
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#endif
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// private API here are the public options on OS X
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// CTFontCreatePathForGlyph
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// ATSUGlyphGetCubicPaths
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// we've used this in cairo sucessfully for some time.
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// Note: cairo dlsyms it. We could do that but maybe it's
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// safe just to use?
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TemporaryRef<Path>
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ScaledFontMac::GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *aTarget)
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{
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if (aTarget->GetType() == BACKEND_COREGRAPHICS || aTarget->GetType() == BACKEND_COREGRAPHICS_ACCELERATED) {
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CGMutablePathRef path = CGPathCreateMutable();
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for (unsigned int i = 0; i < aBuffer.mNumGlyphs; i++) {
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// XXX: we could probably fold both of these transforms together to avoid extra work
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CGAffineTransform flip = CGAffineTransformMakeScale(1, -1);
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CGPathRef glyphPath = ::CGFontGetGlyphPath(mFont, &flip, 0, aBuffer.mGlyphs[i].mIndex);
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CGAffineTransform matrix = CGAffineTransformMake(mSize, 0, 0, mSize,
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aBuffer.mGlyphs[i].mPosition.x,
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aBuffer.mGlyphs[i].mPosition.y);
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CGPathAddPath(path, &matrix, glyphPath);
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CGPathRelease(glyphPath);
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}
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TemporaryRef<Path> ret = new PathCG(path, FILL_WINDING);
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CGPathRelease(path);
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return ret;
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} else {
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return ScaledFontBase::GetPathForGlyphs(aBuffer, aTarget);
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}
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}
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}
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}
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