зеркало из https://github.com/mozilla/gecko-dev.git
81 строка
2.1 KiB
C++
81 строка
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "UnscaledFontFreeType.h"
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#include FT_TRUETYPE_TABLES_H
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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namespace mozilla {
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namespace gfx {
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bool
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UnscaledFontFreeType::GetFontFileData(FontFileDataOutput aDataCallback, void* aBaton)
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{
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if (!mFile.empty()) {
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int fd = open(mFile.c_str(), O_RDONLY);
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if (fd < 0) {
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return false;
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}
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struct stat buf;
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if (fstat(fd, &buf) < 0 ||
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// Don't erroneously read directories as files.
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!S_ISREG(buf.st_mode) ||
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// Verify the file size fits in a uint32_t.
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buf.st_size <= 0 ||
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off_t(uint32_t(buf.st_size)) != buf.st_size) {
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close(fd);
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return false;
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}
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uint32_t length = buf.st_size;
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uint8_t* fontData =
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reinterpret_cast<uint8_t*>(
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mmap(nullptr, length, PROT_READ, MAP_PRIVATE, fd, 0));
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close(fd);
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if (fontData == MAP_FAILED) {
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return false;
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}
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aDataCallback(fontData, length, mIndex, aBaton);
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munmap(fontData, length);
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return true;
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}
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bool success = false;
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FT_ULong length = 0;
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// Request the SFNT file. This may not always succeed for all font types.
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if (FT_Load_Sfnt_Table(mFace, 0, 0, nullptr, &length) == FT_Err_Ok) {
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uint8_t* fontData = new uint8_t[length];
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if (FT_Load_Sfnt_Table(mFace, 0, 0, fontData, &length) == FT_Err_Ok) {
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aDataCallback(fontData, length, 0, aBaton);
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success = true;
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}
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delete[] fontData;
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}
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return success;
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}
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bool
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UnscaledFontFreeType::GetFontDescriptor(FontDescriptorOutput aCb, void* aBaton)
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{
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if (mFile.empty()) {
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return false;
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}
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const char* path = mFile.c_str();
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size_t pathLength = strlen(path) + 1;
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aCb(reinterpret_cast<const uint8_t*>(path), pathLength, 0, aBaton);
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return true;
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}
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} // namespace gfx
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} // namespace mozilla
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