зеркало из https://github.com/mozilla/pjs.git
148 строки
4.3 KiB
C++
148 строки
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Corporation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Matt Woodrow <mwoodrow@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "ScaledFontBase.h"
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#include "gfxFont.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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#endif
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#ifdef USE_CAIRO
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#include "PathCairo.h"
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#endif
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#include <vector>
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#include <cmath>
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using namespace std;
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namespace mozilla {
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namespace gfx {
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ScaledFontBase::~ScaledFontBase()
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{
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#ifdef USE_SKIA
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SkSafeUnref(mTypeface);
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#endif
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#ifdef USE_CAIRO
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cairo_scaled_font_destroy(mScaledFont);
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#endif
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}
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ScaledFontBase::ScaledFontBase(Float aSize)
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: mSize(aSize)
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{
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#ifdef USE_SKIA
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mTypeface = NULL;
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#endif
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#ifdef USE_CAIRO
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mScaledFont = NULL;
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#endif
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}
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TemporaryRef<Path>
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ScaledFontBase::GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *aTarget)
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{
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#ifdef USE_SKIA
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if (aTarget->GetType() == BACKEND_SKIA) {
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SkPaint paint;
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paint.setTypeface(GetSkTypeface());
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paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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paint.setTextSize(SkFloatToScalar(mSize));
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std::vector<uint16_t> indices;
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std::vector<SkPoint> offsets;
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indices.resize(aBuffer.mNumGlyphs);
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offsets.resize(aBuffer.mNumGlyphs);
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for (unsigned int i = 0; i < aBuffer.mNumGlyphs; i++) {
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indices[i] = aBuffer.mGlyphs[i].mIndex;
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offsets[i].fX = SkFloatToScalar(aBuffer.mGlyphs[i].mPosition.x);
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offsets[i].fY = SkFloatToScalar(aBuffer.mGlyphs[i].mPosition.y);
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}
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SkPath path;
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paint.getPosTextPath(&indices.front(), aBuffer.mNumGlyphs*2, &offsets.front(), &path);
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return new PathSkia(path, FILL_WINDING);
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}
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#endif
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#ifdef USE_CAIRO
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if (aTarget->GetType() == BACKEND_CAIRO) {
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MOZ_ASSERT(mScaledFont);
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RefPtr<PathBuilder> builder_iface = aTarget->CreatePathBuilder();
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PathBuilderCairo* builder = static_cast<PathBuilderCairo*>(builder_iface.get());
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// Manually build the path for the PathBuilder.
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RefPtr<CairoPathContext> context = builder->GetPathContext();
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cairo_set_scaled_font(*context, mScaledFont);
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// Convert our GlyphBuffer into an array of Cairo glyphs.
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std::vector<cairo_glyph_t> glyphs(aBuffer.mNumGlyphs);
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for (uint32_t i = 0; i < aBuffer.mNumGlyphs; ++i) {
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glyphs[i].index = aBuffer.mGlyphs[i].mIndex;
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glyphs[i].x = aBuffer.mGlyphs[i].mPosition.x;
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glyphs[i].y = aBuffer.mGlyphs[i].mPosition.y;
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}
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cairo_glyph_path(*context, &glyphs[0], aBuffer.mNumGlyphs);
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return builder->Finish();
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}
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#endif
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return NULL;
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}
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#ifdef USE_CAIRO
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void
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ScaledFontBase::SetCairoScaledFont(cairo_scaled_font_t* font)
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{
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MOZ_ASSERT(!mScaledFont);
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mScaledFont = font;
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cairo_scaled_font_reference(mScaledFont);
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}
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#endif
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}
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}
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