зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
2.9 KiB
C++
122 строки
2.9 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 "ScaledFontBase.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 = nullptr;
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#endif
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#ifdef USE_CAIRO
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mScaledFont = nullptr;
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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 nullptr;
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}
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void
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ScaledFontBase::CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder)
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{
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// XXX - implement me
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MOZ_ASSERT(false);
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return;
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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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