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authorreed@google.com <reed@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2013-03-12 13:11:54 +0000
committerreed@google.com <reed@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2013-03-12 13:11:54 +0000
commit9628e0d1b18acb3ef20752bfa19737338d26346c (patch)
tree351c06ac28c8e89f99825fa0ef82250b36bd006f /skia
parent0b57b3ae0fcffa1f1734c19b92c1b3c8ecb3a4c7 (diff)
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re-land 187283 -- switch to skia's version of SkFontHost_fontconfig
add suppressions.txt to account for global typeface cache Review URL: https://codereview.chromium.org/12764009 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@187572 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'skia')
-rw-r--r--skia/ext/SkFontHost_fontconfig.cpp369
-rw-r--r--skia/ext/SkFontHost_fontconfig_control.h38
-rw-r--r--skia/ext/SkFontHost_fontconfig_direct.cpp504
-rw-r--r--skia/ext/SkFontHost_fontconfig_direct.h59
-rw-r--r--skia/ext/SkFontHost_fontconfig_impl.h73
-rw-r--r--skia/ext/skia_utils_base.cc53
-rw-r--r--skia/ext/skia_utils_base.h33
-rw-r--r--skia/skia.gyp9
8 files changed, 93 insertions, 1045 deletions
diff --git a/skia/ext/SkFontHost_fontconfig.cpp b/skia/ext/SkFontHost_fontconfig.cpp
deleted file mode 100644
index a209869..0000000
--- a/skia/ext/SkFontHost_fontconfig.cpp
+++ /dev/null
@@ -1,369 +0,0 @@
-/* libs/graphics/ports/SkFontHost_fontconfig.cpp
-**
-** Copyright 2008, Google Inc.
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-// -----------------------------------------------------------------------------
-// This file provides implementations of the font resolution members of
-// SkFontHost by using the fontconfig[1] library. Fontconfig is usually found
-// on Linux systems and handles configuration, parsing and caching issues
-// involved with enumerating and matching fonts.
-//
-// [1] http://fontconfig.org
-// -----------------------------------------------------------------------------
-
-#include <map>
-#include <string>
-
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include "base/compiler_specific.h"
-#include "third_party/skia/src/core/SkFontDescriptor.h"
-#include "SkFontHost.h"
-#include "SkStream.h"
-#include "SkFontHost_fontconfig_control.h"
-#include "SkFontHost_fontconfig_impl.h"
-#include "SkFontHost_fontconfig_direct.h"
-
-static FontConfigInterface* global_fc_impl = NULL;
-
-void SkiaFontConfigUseDirectImplementation() {
- if (global_fc_impl)
- delete global_fc_impl;
- global_fc_impl = new FontConfigDirect;
-}
-
-void SkiaFontConfigSetImplementation(FontConfigInterface* font_config) {
- if (global_fc_impl)
- delete global_fc_impl;
- global_fc_impl = font_config;
-}
-
-static FontConfigInterface* GetFcImpl() {
- if (!global_fc_impl)
- global_fc_impl = new FontConfigDirect;
- return global_fc_impl;
-}
-
-SK_DECLARE_STATIC_MUTEX(global_remote_font_map_lock);
-static std::map<uint32_t, std::pair<uint8_t*, size_t> >* global_remote_fonts;
-
-// Initialize the map declared above. Note that its corresponding mutex must be
-// locked before calling this function.
-static void AllocateGlobalRemoteFontsMapOnce() {
- if (!global_remote_fonts) {
- global_remote_fonts =
- new std::map<uint32_t, std::pair<uint8_t*, size_t> >();
- }
-}
-
-static unsigned global_next_remote_font_id;
-
-// This is the maximum size of the font cache.
-static const unsigned kFontCacheMemoryBudget = 2 * 1024 * 1024; // 2MB
-
-// UniqueIds are encoded as (filefaceid << 8) | style
-// For system fonts, filefaceid = (fileid << 4) | face_index.
-// For remote fonts, filefaceid = fileid.
-
-static unsigned UniqueIdToFileFaceId(unsigned uniqueid)
-{
- return uniqueid >> 8;
-}
-
-static SkTypeface::Style UniqueIdToStyle(unsigned uniqueid)
-{
- return static_cast<SkTypeface::Style>(uniqueid & 0xff);
-}
-
-static unsigned FileFaceIdAndStyleToUniqueId(unsigned filefaceid,
- SkTypeface::Style style)
-{
- SkASSERT((style & 0xff) == style);
- return (filefaceid << 8) | static_cast<int>(style);
-}
-
-static const unsigned kRemoteFontMask = 0x00800000u;
-
-static bool IsRemoteFont(unsigned filefaceid)
-{
- return filefaceid & kRemoteFontMask;
-}
-
-class FontConfigTypeface : public SkTypeface {
-public:
- FontConfigTypeface(Style style, uint32_t id)
- : SkTypeface(style, id)
- { }
-
- virtual ~FontConfigTypeface()
- {
- const uint32_t id = uniqueID();
- if (IsRemoteFont(UniqueIdToFileFaceId(id))) {
- SkAutoMutexAcquire ac(global_remote_font_map_lock);
- AllocateGlobalRemoteFontsMapOnce();
- std::map<uint32_t, std::pair<uint8_t*, size_t> >::iterator iter
- = global_remote_fonts->find(id);
- if (iter != global_remote_fonts->end()) {
- sk_free(iter->second.first); // remove the font on memory.
- global_remote_fonts->erase(iter);
- }
- }
- }
-};
-
-// static
-SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
- const char familyName[],
- SkTypeface::Style style)
-{
- std::string resolved_family_name;
-
- if (familyFace) {
- // Given the fileid we can ask fontconfig for the familyname of the
- // font.
- const unsigned filefaceid = UniqueIdToFileFaceId(familyFace->uniqueID());
- if (!GetFcImpl()->Match(&resolved_family_name, NULL,
- true /* filefaceid valid */, filefaceid, "",
- NULL, 0, NULL, NULL)) {
- return NULL;
- }
- } else if (familyName) {
- resolved_family_name = familyName;
- }
-
- bool bold = style & SkTypeface::kBold;
- bool italic = style & SkTypeface::kItalic;
- unsigned filefaceid;
- if (!GetFcImpl()->Match(NULL, &filefaceid,
- false, -1, /* no filefaceid */
- resolved_family_name, NULL, 0,
- &bold, &italic)) {
- return NULL;
- }
- const SkTypeface::Style resulting_style = static_cast<SkTypeface::Style>(
- (bold ? SkTypeface::kBold : 0) |
- (italic ? SkTypeface::kItalic : 0));
-
- const unsigned id = FileFaceIdAndStyleToUniqueId(filefaceid,
- resulting_style);
- SkTypeface* typeface = SkNEW_ARGS(FontConfigTypeface, (resulting_style, id));
- return typeface;
-}
-
-// static
-SkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream)
-{
- if (!stream)
- return NULL;
-
- const size_t length = stream->read(0, 0);
- if (!length)
- return NULL;
- if (length >= 1024 * 1024 * 1024)
- return NULL; // don't accept too large fonts (>= 1GB) for safety.
-
- uint8_t* font = (uint8_t*)sk_malloc_throw(length);
- if (stream->read(font, length) != length) {
- sk_free(font);
- return NULL;
- }
-
- SkTypeface::Style style = static_cast<SkTypeface::Style>(0);
- unsigned id = 0;
- {
- SkAutoMutexAcquire ac(global_remote_font_map_lock);
- AllocateGlobalRemoteFontsMapOnce();
- id = FileFaceIdAndStyleToUniqueId(
- global_next_remote_font_id | kRemoteFontMask, style);
-
- if (++global_next_remote_font_id >= kRemoteFontMask)
- global_next_remote_font_id = 0;
-
- if (!global_remote_fonts->insert(
- std::make_pair(id, std::make_pair(font, length))).second) {
- sk_free(font);
- return NULL;
- }
- }
-
- SkTypeface* typeface = SkNEW_ARGS(FontConfigTypeface, (style, id));
- return typeface;
-}
-
-// static
-SkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[])
-{
- SkASSERT(!"SkFontHost::CreateTypefaceFromFile unimplemented");
- return NULL;
-}
-
-uint32_t SkFontHost::NextLogicalFont(SkFontID curr, SkFontID orig) {
- // We don't handle font fallback, WebKit does.
- return 0;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-// Serialize, Deserialize need to be compatible across platforms, hence the use
-// of SkFontDescriptor.
-
-void SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) {
- SkFontDescriptor desc(face->style());
-
- std::string resolved_family_name;
-
- const unsigned filefaceid = UniqueIdToFileFaceId(face->uniqueID());
- if (GetFcImpl()->Match(&resolved_family_name, NULL,
- true /* filefaceid valid */, filefaceid, "", NULL, 0, NULL, NULL))
- desc.setFamilyName(resolved_family_name.c_str());
- else
- desc.setFamilyName("sans-serif");
-
- // would also like other names (see SkFontDescriptor.h)
-
- desc.serialize(stream);
-
- // by convention, we also write out the actual sfnt data, preceeded by
- // a packed-length. For now we skip that, so we just write the zero.
- stream->writePackedUInt(0);
-}
-
-SkTypeface* SkFontHost::Deserialize(SkStream* stream) {
- SkFontDescriptor desc(stream);
-
- // by convention, Serialize will have also written the actual sfnt data.
- // for now, we just want to skip it.
- size_t size = stream->readPackedUInt();
- stream->skip(size);
-
- return SkFontHost::CreateTypeface(NULL, desc.getFamilyName(),
- desc.getStyle());
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-class SkFileDescriptorStream : public SkStream {
- public:
- SkFileDescriptorStream(int fd) {
- memory_ = NULL;
- offset_ = 0;
-
- // this ensures that if we fail in the constructor, we will safely
- // ignore all subsequent calls to read() because we will always trim
- // the requested size down to 0
- length_ = 0;
-
- struct stat st;
- if (fstat(fd, &st))
- return;
-
- void* memory = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
- close(fd);
- if (memory == MAP_FAILED)
- return;
-
- memory_ = reinterpret_cast<uint8_t*>(memory);
- length_ = st.st_size;
- }
-
- virtual ~SkFileDescriptorStream() {
- munmap(const_cast<uint8_t*>(memory_), length_);
- }
-
- virtual bool rewind() OVERRIDE {
- offset_ = 0;
- return true;
- }
-
- // SkStream implementation.
- virtual size_t read(void* buffer, size_t size) OVERRIDE {
- if (!buffer && !size) {
- // This is request for the length of the stream.
- return length_;
- }
-
- size_t remaining = length_ - offset_;
- if (size > remaining)
- size = remaining;
- if (buffer)
- memcpy(buffer, memory_ + offset_, size);
-
- offset_ += size;
- return size;
- }
-
- virtual const void* getMemoryBase() OVERRIDE {
- return memory_;
- }
-
- private:
- const uint8_t* memory_;
- size_t offset_, length_;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-// static
-SkStream* SkFontHost::OpenStream(uint32_t id)
-{
- const unsigned filefaceid = UniqueIdToFileFaceId(id);
-
- if (IsRemoteFont(filefaceid)) {
- // remote font
- SkAutoMutexAcquire ac(global_remote_font_map_lock);
- AllocateGlobalRemoteFontsMapOnce();
- std::map<uint32_t, std::pair<uint8_t*, size_t> >::const_iterator iter
- = global_remote_fonts->find(id);
- if (iter == global_remote_fonts->end())
- return NULL;
- return SkNEW_ARGS(
- SkMemoryStream, (iter->second.first, iter->second.second));
- }
-
- // system font
- const int fd = GetFcImpl()->Open(filefaceid);
- if (fd < 0)
- return NULL;
-
- return SkNEW_ARGS(SkFileDescriptorStream, (fd));
-}
-
-// static
-size_t SkFontHost::GetFileName(SkFontID fontID, char path[], size_t length,
- int32_t* index) {
- const unsigned filefaceid = UniqueIdToFileFaceId(fontID);
-
- if (IsRemoteFont(filefaceid))
- return 0;
-
- if (index) {
- *index = filefaceid & 0xfu;
- // 1 is a bogus return value.
- // We had better change the signature of this function in Skia
- // to return bool to indicate success/failure and have another
- // out param for fileName length.
- if (!path)
- return 1;
- }
-
- if (path)
- SkASSERT(!"SkFontHost::GetFileName does not support the font path "
- "retrieval.");
-
- return 0;
-}
diff --git a/skia/ext/SkFontHost_fontconfig_control.h b/skia/ext/SkFontHost_fontconfig_control.h
deleted file mode 100644
index 336634b..0000000
--- a/skia/ext/SkFontHost_fontconfig_control.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/* libs/graphics/ports/SkFontHost_fontconfig_control.h
-**
-** Copyright 2009, Google Inc.
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#ifndef FontConfigControl_DEFINED
-#define FontConfigControl_DEFINED
-
-#include "SkPreConfig.h"
-
-class FontConfigInterface;
-
-// Sets the Skia FontHost to use the direct (non-IPC, requires filesystem
-// access) FontConfig implementation. Any previously-set FontConfigInterface
-// will be freed.
-SK_API void SkiaFontConfigUseDirectImplementation();
-
-// Sets the Skia FontHost to use the given implementation of FontConfig. This
-// is normally used to configure the IPC-based implementation to get out of
-// the sandbox.
-//
-// Ownership of the given pointer is transferred, and any previously-set
-// FontConfigInterface will be freed.
-SK_API void SkiaFontConfigSetImplementation(FontConfigInterface* font_config);
-
-#endif // FontConfigControl_DEFINED
diff --git a/skia/ext/SkFontHost_fontconfig_direct.cpp b/skia/ext/SkFontHost_fontconfig_direct.cpp
deleted file mode 100644
index fb22106..0000000
--- a/skia/ext/SkFontHost_fontconfig_direct.cpp
+++ /dev/null
@@ -1,504 +0,0 @@
-/* libs/graphics/ports/SkFontHost_fontconfig_direct.cpp
-**
-** Copyright 2009, Google Inc.
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include "skia/ext/SkFontHost_fontconfig_direct.h"
-
-#include <unistd.h>
-#include <fcntl.h>
-
-#include <fontconfig/fontconfig.h>
-
-#include "third_party/skia/include/core/SkTypeface.h"
-#include "third_party/skia/include/core/SkUtils.h"
-
-namespace {
-
-// Equivalence classes, used to match the Liberation and other fonts
-// with their metric-compatible replacements. See the discussion in
-// GetFontEquivClass().
-enum FontEquivClass
-{
- OTHER,
- SANS,
- SERIF,
- MONO,
- SYMBOL,
- PGOTHIC,
- GOTHIC,
- PMINCHO,
- MINCHO,
- SIMSUN,
- NSIMSUN,
- SIMHEI,
- PMINGLIU,
- MINGLIU,
- PMINGLIUHK,
- MINGLIUHK,
-};
-
-// Match the font name against a whilelist of fonts, returning the equivalence
-// class.
-FontEquivClass GetFontEquivClass(const char* fontname)
-{
- // It would be nice for fontconfig to tell us whether a given suggested
- // replacement is a "strong" match (that is, an equivalent font) or
- // a "weak" match (that is, fontconfig's next-best attempt at finding a
- // substitute). However, I played around with the fontconfig API for
- // a good few hours and could not make it reveal this information.
- //
- // So instead, we hardcode. Initially this function emulated
- // /etc/fonts/conf.d/30-metric-aliases.conf
- // from my Ubuntu system, but we're better off being very conservative.
-
- // Arimo, Tinos and Cousine are a set of fonts metric-compatible with
- // Arial, Times New Roman and Courier New with a character repertoire
- // much larger than Liberation. Note that Cousine is metrically
- // compatible with Courier New, but the former is sans-serif while
- // the latter is serif.
-
-
- struct FontEquivMap {
- FontEquivClass clazz;
- const char name[40];
- };
-
- static const FontEquivMap kFontEquivMap[] = {
- { SANS, "Arial" },
- { SANS, "Arimo" },
- { SANS, "Liberation Sans" },
-
- { SERIF, "Times New Roman" },
- { SERIF, "Tinos" },
- { SERIF, "Liberation Serif" },
-
- { MONO, "Courier New" },
- { MONO, "Cousine" },
- { MONO, "Liberation Mono" },
-
- { SYMBOL, "Symbol" },
- { SYMBOL, "Symbol Neu" },
-
- // MS Pゴシック
- { PGOTHIC, "MS PGothic" },
- { PGOTHIC, "\xef\xbc\xad\xef\xbc\xb3 \xef\xbc\xb0"
- "\xe3\x82\xb4\xe3\x82\xb7\xe3\x83\x83\xe3\x82\xaf" },
- { PGOTHIC, "IPAPGothic" },
- { PGOTHIC, "MotoyaG04Gothic" },
-
- // MS ゴシック
- { GOTHIC, "MS Gothic" },
- { GOTHIC, "\xef\xbc\xad\xef\xbc\xb3 "
- "\xe3\x82\xb4\xe3\x82\xb7\xe3\x83\x83\xe3\x82\xaf" },
- { GOTHIC, "IPAGothic" },
- { GOTHIC, "MotoyaG04GothicMono" },
-
- // MS P明朝
- { PMINCHO, "MS PMincho" },
- { PMINCHO, "\xef\xbc\xad\xef\xbc\xb3 \xef\xbc\xb0"
- "\xe6\x98\x8e\xe6\x9c\x9d"},
- { PMINCHO, "IPAPMincho" },
- { PMINCHO, "MotoyaG04Mincho" },
-
- // MS 明朝
- { MINCHO, "MS Mincho" },
- { MINCHO, "\xef\xbc\xad\xef\xbc\xb3 \xe6\x98\x8e\xe6\x9c\x9d" },
- { MINCHO, "IPAMincho" },
- { MINCHO, "MotoyaG04MinchoMono" },
-
- // 宋体
- { SIMSUN, "Simsun" },
- { SIMSUN, "\xe5\xae\x8b\xe4\xbd\x93" },
- { SIMSUN, "MSung GB18030" },
- { SIMSUN, "Song ASC" },
-
- // 新宋体
- { NSIMSUN, "NSimsun" },
- { NSIMSUN, "\xe6\x96\xb0\xe5\xae\x8b\xe4\xbd\x93" },
- { NSIMSUN, "MSung GB18030" },
- { NSIMSUN, "N Song ASC" },
-
- // 黑体
- { SIMHEI, "Simhei" },
- { SIMHEI, "\xe9\xbb\x91\xe4\xbd\x93" },
- { SIMHEI, "MYingHeiGB18030" },
- { SIMHEI, "MYingHeiB5HK" },
-
- // 新細明體
- { PMINGLIU, "PMingLiU"},
- { PMINGLIU, "\xe6\x96\xb0\xe7\xb4\xb0\xe6\x98\x8e\xe9\xab\x94" },
- { PMINGLIU, "MSung B5HK"},
-
- // 細明體
- { MINGLIU, "MingLiU"},
- { MINGLIU, "\xe7\xb4\xb0\xe6\x98\x8e\xe9\xab\x94" },
- { MINGLIU, "MSung B5HK"},
-
- // 新細明體
- { PMINGLIUHK, "PMingLiU_HKSCS"},
- { PMINGLIUHK, "\xe6\x96\xb0\xe7\xb4\xb0\xe6\x98\x8e\xe9\xab\x94_HKSCS" },
- { PMINGLIUHK, "MSung B5HK"},
-
- // 細明體
- { MINGLIUHK, "MingLiU_HKSCS"},
- { MINGLIUHK, "\xe7\xb4\xb0\xe6\x98\x8e\xe9\xab\x94_HKSCS" },
- { MINGLIUHK, "MSung B5HK"},
- };
-
- static const size_t kFontCount =
- sizeof(kFontEquivMap)/sizeof(kFontEquivMap[0]);
-
- // TODO(jungshik): If this loop turns out to be hot, turn
- // the array to a static (hash)map to speed it up.
- for (size_t i = 0; i < kFontCount; ++i) {
- if (strcasecmp(kFontEquivMap[i].name, fontname) == 0)
- return kFontEquivMap[i].clazz;
- }
- return OTHER;
-}
-
-
-// Return true if |font_a| and |font_b| are visually and at the metrics
-// level interchangeable.
-bool IsMetricCompatibleReplacement(const char* font_a, const char* font_b)
-{
- FontEquivClass class_a = GetFontEquivClass(font_a);
- FontEquivClass class_b = GetFontEquivClass(font_b);
-
- return class_a != OTHER && class_a == class_b;
-}
-
-inline unsigned FileFaceIdToFileId(unsigned filefaceid)
-{
- return filefaceid >> 4;
-}
-
-inline unsigned FileIdAndFaceIndexToFileFaceId(unsigned fileid, int face_index)
-{
- SkASSERT((face_index & 0xfu) == face_index);
- return (fileid << 4) | face_index;
-}
-
-// Normally we only return exactly the font asked for. In last-resort
-// cases, the request either doesn't specify a font or is one of the
-// basic font names like "Sans", "Serif" or "Monospace". This function
-// tells you whether a given request is for such a fallback.
-bool IsFallbackFontAllowed(const std::string& family) {
- const char* family_cstr = family.c_str();
- return family.empty() ||
- strcasecmp(family_cstr, "sans") == 0 ||
- strcasecmp(family_cstr, "serif") == 0 ||
- strcasecmp(family_cstr, "monospace") == 0;
-}
-
-// Find matching font from |font_set| for the given font family.
-FcPattern* MatchFont(FcFontSet* font_set,
- FcChar8* post_config_family,
- const std::string& family) {
- // Older versions of fontconfig have a bug where they cannot select
- // only scalable fonts so we have to manually filter the results.
- FcPattern* match = NULL;
- for (int i = 0; i < font_set->nfont; ++i) {
- FcPattern* current = font_set->fonts[i];
- FcBool is_scalable;
-
- if (FcPatternGetBool(current, FC_SCALABLE, 0,
- &is_scalable) != FcResultMatch ||
- !is_scalable) {
- continue;
- }
-
- // fontconfig can also return fonts which are unreadable
- FcChar8* c_filename;
- if (FcPatternGetString(current, FC_FILE, 0, &c_filename) != FcResultMatch)
- continue;
-
- if (access(reinterpret_cast<char*>(c_filename), R_OK) != 0)
- continue;
-
- match = current;
- break;
- }
-
- if (match && !IsFallbackFontAllowed(family)) {
- bool acceptable_substitute = false;
- for (int id = 0; id < 255; ++id) {
- FcChar8* post_match_family;
- if (FcPatternGetString(match, FC_FAMILY, id, &post_match_family) !=
- FcResultMatch)
- break;
- acceptable_substitute =
- (strcasecmp(reinterpret_cast<char*>(post_config_family),
- reinterpret_cast<char*>(post_match_family)) == 0 ||
- // Workaround for Issue 12530:
- // requested family: "Bitstream Vera Sans"
- // post_config_family: "Arial"
- // post_match_family: "Bitstream Vera Sans"
- // -> We should treat this case as a good match.
- strcasecmp(family.c_str(),
- reinterpret_cast<char*>(post_match_family)) == 0) ||
- IsMetricCompatibleReplacement(family.c_str(),
- reinterpret_cast<char*>(post_match_family));
- if (acceptable_substitute)
- break;
- }
- if (!acceptable_substitute)
- return NULL;
- }
-
- return match;
-}
-
-// Retrieves |is_bold|, |is_italic| and |font_family| properties from |font|.
-bool GetFontProperties(FcPattern* font,
- std::string* font_family,
- bool* is_bold,
- bool* is_italic) {
- FcChar8* c_family;
- if (FcPatternGetString(font, FC_FAMILY, 0, &c_family))
- return false;
-
- int resulting_bold;
- if (FcPatternGetInteger(font, FC_WEIGHT, 0, &resulting_bold))
- resulting_bold = FC_WEIGHT_NORMAL;
-
- int resulting_italic;
- if (FcPatternGetInteger(font, FC_SLANT, 0, &resulting_italic))
- resulting_italic = FC_SLANT_ROMAN;
-
- // If we ask for an italic font, fontconfig might take a roman font and set
- // the undocumented property FC_MATRIX to a skew matrix. It'll then say
- // that the font is italic or oblique. So, if we see a matrix, we don't
- // believe that it's italic.
- FcValue matrix;
- const bool have_matrix = FcPatternGet(font, FC_MATRIX, 0, &matrix) == 0;
-
- // If we ask for an italic font, fontconfig might take a roman font and set
- // FC_EMBOLDEN.
- FcValue embolden;
- const bool have_embolden =
- FcPatternGet(font, FC_EMBOLDEN, 0, &embolden) == 0;
-
- *is_bold = resulting_bold > FC_WEIGHT_MEDIUM && !have_embolden;
- *is_italic = resulting_italic > FC_SLANT_ROMAN && !have_matrix;
- *font_family = reinterpret_cast<char*>(c_family);
-
- return true;
-}
-
-} // anonymous namespace
-
-FontConfigDirect::FontConfigDirect()
- : next_file_id_(0) {
- FcInit();
-}
-
-FontConfigDirect::~FontConfigDirect() {
-}
-
-bool FontConfigDirect::Match(std::string* result_family,
- unsigned* result_filefaceid,
- bool filefaceid_valid, unsigned filefaceid,
- const std::string& family,
- const void* data, size_t characters_bytes,
- bool* is_bold, bool* is_italic) {
- if (family.length() > kMaxFontFamilyLength)
- return false;
-
- SkAutoMutexAcquire ac(mutex_);
-
- // Given |family|, |is_bold| and |is_italic| but not |data|, the result will
- // be a function of these three parameters, and thus eligible for caching.
- // This is the fast path for |SkTypeface::CreateFromName()|.
- bool eligible_for_cache = !family.empty() && is_bold && is_italic && !data;
- if (eligible_for_cache) {
- int style = (*is_bold ? SkTypeface::kBold : 0 ) |
- (*is_italic ? SkTypeface::kItalic : 0);
- FontMatchKey key = FontMatchKey(family, style);
- const std::map<FontMatchKey, FontMatch>::const_iterator i =
- font_match_cache_.find(key);
- if (i != font_match_cache_.end()) {
- *is_bold = i->second.is_bold;
- *is_italic = i->second.is_italic;
- if (result_family)
- *result_family = i->second.family;
- if (result_filefaceid)
- *result_filefaceid = i->second.filefaceid;
- return true;
- }
- }
-
- FcPattern* pattern = FcPatternCreate();
-
- if (filefaceid_valid) {
- const std::map<unsigned, std::string>::const_iterator
- i = fileid_to_filename_.find(FileFaceIdToFileId(filefaceid));
- if (i == fileid_to_filename_.end()) {
- FcPatternDestroy(pattern);
- return false;
- }
- int face_index = filefaceid & 0xfu;
- FcPatternAddString(pattern, FC_FILE,
- reinterpret_cast<const FcChar8*>(i->second.c_str()));
- // face_index is added only when family is empty because it is not
- // necessary to uniquiely identify a font if both file and
- // family are given.
- if (family.empty())
- FcPatternAddInteger(pattern, FC_INDEX, face_index);
- }
- if (!family.empty()) {
- FcPatternAddString(pattern, FC_FAMILY, (FcChar8*) family.c_str());
- }
-
- FcCharSet* charset = NULL;
- if (data) {
- charset = FcCharSetCreate();
- const uint16_t* chars = (const uint16_t*)data;
- const uint16_t* stop = chars + characters_bytes/2;
- while (chars < stop) {
- FcCharSetAddChar(charset, SkUTF16_NextUnichar(&chars));
- }
- FcPatternAddCharSet(pattern, FC_CHARSET, charset);
- FcCharSetDestroy(charset); // pattern now owns it.
- }
-
- FcPatternAddInteger(pattern, FC_WEIGHT,
- is_bold && *is_bold ? FC_WEIGHT_BOLD
- : FC_WEIGHT_NORMAL);
- FcPatternAddInteger(pattern, FC_SLANT,
- is_italic && *is_italic ? FC_SLANT_ITALIC
- : FC_SLANT_ROMAN);
- FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
-
- FcConfigSubstitute(NULL, pattern, FcMatchPattern);
- FcDefaultSubstitute(pattern);
-
- // Font matching:
- // CSS often specifies a fallback list of families:
- // font-family: a, b, c, serif;
- // However, fontconfig will always do its best to find *a* font when asked
- // for something so we need a way to tell if the match which it has found is
- // "good enough" for us. Otherwise, we can return NULL which gets piped up
- // and lets WebKit know to try the next CSS family name. However, fontconfig
- // configs allow substitutions (mapping "Arial -> Helvetica" etc) and we
- // wish to support that.
- //
- // Thus, if a specific family is requested we set @family_requested. Then we
- // record two strings: the family name after config processing and the
- // family name after resolving. If the two are equal, it's a good match.
- //
- // So consider the case where a user has mapped Arial to Helvetica in their
- // config.
- // requested family: "Arial"
- // post_config_family: "Helvetica"
- // post_match_family: "Helvetica"
- // -> good match
- //
- // and for a missing font:
- // requested family: "Monaco"
- // post_config_family: "Monaco"
- // post_match_family: "Times New Roman"
- // -> BAD match
- //
- // However, we special-case fallback fonts; see IsFallbackFontAllowed().
- FcChar8* post_config_family;
- FcPatternGetString(pattern, FC_FAMILY, 0, &post_config_family);
-
- FcResult result;
- FcFontSet* font_set = FcFontSort(0, pattern, 0, 0, &result);
- if (!font_set) {
- FcPatternDestroy(pattern);
- return false;
- }
-
- FcPattern* match = MatchFont(font_set, post_config_family, family);
- if (!match) {
- FcPatternDestroy(pattern);
- FcFontSetDestroy(font_set);
- return false;
- }
-
- FcPatternDestroy(pattern);
-
- FcChar8* c_filename;
- if (FcPatternGetString(match, FC_FILE, 0, &c_filename) != FcResultMatch) {
- FcFontSetDestroy(font_set);
- return false;
- }
- int face_index;
- if (FcPatternGetInteger(match, FC_INDEX, 0, &face_index) != FcResultMatch) {
- FcFontSetDestroy(font_set);
- return false;
- }
-
- FontMatch font_match;
- if (filefaceid_valid) {
- font_match.filefaceid = filefaceid;
- } else {
- unsigned out_fileid;
- const std::string filename(reinterpret_cast<char*>(c_filename));
- const std::map<std::string, unsigned>::const_iterator
- i = filename_to_fileid_.find(filename);
- if (i == filename_to_fileid_.end()) {
- out_fileid = next_file_id_++;
- filename_to_fileid_[filename] = out_fileid;
- fileid_to_filename_[out_fileid] = filename;
- } else {
- out_fileid = i->second;
- }
- // fileid stored in filename_to_fileid_ and fileid_to_filename_ is
- // unique only up to the font file. We have to encode face_index for
- // the out param.
- font_match.filefaceid =
- FileIdAndFaceIndexToFileFaceId(out_fileid, face_index);
- }
-
- bool success = GetFontProperties(match,
- &font_match.family,
- &font_match.is_bold,
- &font_match.is_italic);
- FcFontSetDestroy(font_set);
-
- if (success) {
- // If eligible, cache the result of the matching.
- if (eligible_for_cache) {
- int style = (*is_bold ? SkTypeface::kBold : 0 ) |
- (*is_italic ? SkTypeface::kItalic : 0);
- font_match_cache_[FontMatchKey(family, style)] = font_match;
- }
-
- if (result_family)
- *result_family = font_match.family;
- if (result_filefaceid)
- *result_filefaceid = font_match.filefaceid;
- if (is_bold)
- *is_bold = font_match.is_bold;
- if (is_italic)
- *is_italic = font_match.is_italic;
- }
-
- return success;
-}
-
-int FontConfigDirect::Open(unsigned filefaceid) {
- SkAutoMutexAcquire ac(mutex_);
- const std::map<unsigned, std::string>::const_iterator
- i = fileid_to_filename_.find(FileFaceIdToFileId(filefaceid));
- if (i == fileid_to_filename_.end())
- return -1;
-
- return open(i->second.c_str(), O_RDONLY);
-}
diff --git a/skia/ext/SkFontHost_fontconfig_direct.h b/skia/ext/SkFontHost_fontconfig_direct.h
deleted file mode 100644
index ae97f3d..0000000
--- a/skia/ext/SkFontHost_fontconfig_direct.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/* libs/graphics/ports/SkFontHost_fontconfig_direct.h
-**
-** Copyright 2009, Google Inc.
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#ifndef FontConfigDirect_DEFINED
-#define FontConfigDirect_DEFINED
-
-#include <map>
-#include <string>
-
-#include "SkThread.h"
-#include "SkFontHost_fontconfig_impl.h"
-
-class SK_API FontConfigDirect : public FontConfigInterface {
- public:
- FontConfigDirect();
- virtual ~FontConfigDirect();
-
- // FontConfigInterface implementation. Thread safe.
- virtual bool Match(std::string* result_family, unsigned* result_filefaceid,
- bool filefaceid_valid, unsigned filefaceid,
- const std::string& family,
- const void* characters, size_t characters_bytes,
- bool* is_bold, bool* is_italic) SK_OVERRIDE;
- virtual int Open(unsigned filefaceid) SK_OVERRIDE;
-
- private:
- SkMutex mutex_;
- // fileid stored in two maps below are unique per font file.
- std::map<unsigned, std::string> fileid_to_filename_;
- std::map<std::string, unsigned> filename_to_fileid_;
-
- // Cache of |family,style| to |FontMatch| to minimize querying FontConfig.
- typedef std::pair<std::string, int> FontMatchKey;
- struct FontMatch {
- std::string family;
- bool is_bold;
- bool is_italic;
- unsigned filefaceid;
- };
- std::map<FontMatchKey, FontMatch> font_match_cache_;
-
- unsigned next_file_id_;
-};
-
-#endif // FontConfigDirect_DEFINED
diff --git a/skia/ext/SkFontHost_fontconfig_impl.h b/skia/ext/SkFontHost_fontconfig_impl.h
deleted file mode 100644
index d6f81796..0000000
--- a/skia/ext/SkFontHost_fontconfig_impl.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/* libs/graphics/ports/SkFontHost_fontconfig_impl.h
-**
-** Copyright 2009, Google Inc.
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-/* The SkFontHost_fontconfig code requires an implementation of an abstact
- * fontconfig interface. We do this because sometimes fontconfig is not
- * directly availible and this provides an ability to change the fontconfig
- * implementation at run-time.
- */
-
-#ifndef FontConfigInterface_DEFINED
-#define FontConfigInterface_DEFINED
-
-#include <string>
-
-class FontConfigInterface {
- public:
- virtual ~FontConfigInterface() { }
-
- /** Performs config match
- *
- * @param result_family (optional, set to NULL to ignore, output)
- * on success, set to the resulting family name.
- * @param result_filefaceid (optional, set to NULL to ignore, output)
- * on success, set to the resulting fileface id.
- * @param filefaceid_valid if true, then |filefaceid| is valid
- * @param filefaceid the filefaceid (as returned by this function)
- * which we are trying to match.
- * @param family (optional) the family of the font that we are trying to
- * match. If the length of the |family| is greater then
- * kMaxFontFamilyLength, this function should immediately return false.
- * @param characters (optional) UTF-16 characters the font must cover.
- * @param characters_bytes (optional) number of bytes in |characters|
- * @param is_bold (optional, set to NULL to ignore, in/out)
- * @param is_italic (optional, set to NULL to ignore, in/out)
- * @return true iff successful.
- * Note that |filefaceid| uniquely identifies <font file, face_index) :
- * system font: filefaceid =
- * (fileid(unique per font file) << 4 | face_index)
- * remote font: filefaceid = fileid
- */
- virtual bool Match(
- std::string* result_family,
- unsigned* result_filefaceid,
- bool filefaceid_valid,
- unsigned filefaceid,
- const std::string& family,
- const void* characters,
- size_t characters_bytes,
- bool* is_bold,
- bool* is_italic) = 0;
-
- /** Open a font file given the filefaceid as returned by Match.
- */
- virtual int Open(unsigned filefaceid) = 0;
-
- static const unsigned kMaxFontFamilyLength = 2048;
-};
-
-#endif // FontConfigInterface_DEFINED
diff --git a/skia/ext/skia_utils_base.cc b/skia/ext/skia_utils_base.cc
new file mode 100644
index 0000000..07c06bb
--- /dev/null
+++ b/skia/ext/skia_utils_base.cc
@@ -0,0 +1,53 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "skia/ext/skia_utils_base.h"
+
+namespace skia {
+
+bool ReadSkString(const Pickle& pickle, PickleIterator* iter, SkString* str) {
+ int reply_length;
+ const char* reply_text;
+
+ if (!pickle.ReadData(iter, &reply_text, &reply_length))
+ return false;
+
+ if (str)
+ str->set(reply_text, reply_length);
+ return true;
+}
+
+bool ReadSkFontIdentity(const Pickle& pickle, PickleIterator* iter,
+ SkFontConfigInterface::FontIdentity* identity) {
+ uint32_t reply_id;
+ uint32_t reply_ttcIndex;
+ int reply_length;
+ const char* reply_text;
+
+ if (!pickle.ReadUInt32(iter, &reply_id) ||
+ !pickle.ReadUInt32(iter, &reply_ttcIndex) ||
+ !pickle.ReadData(iter, &reply_text, &reply_length))
+ return false;
+
+ if (identity) {
+ identity->fID = reply_id;
+ identity->fTTCIndex = reply_ttcIndex;
+ identity->fString.set(reply_text, reply_length);
+ }
+ return true;
+}
+
+bool WriteSkString(Pickle* pickle, const SkString& str) {
+ return pickle->WriteData(str.c_str(), str.size());
+}
+
+bool WriteSkFontIdentity(Pickle* pickle,
+ const SkFontConfigInterface::FontIdentity& identity) {
+ return pickle->WriteUInt32(identity.fID) &&
+ pickle->WriteUInt32(identity.fTTCIndex) &&
+ WriteSkString(pickle, identity.fString);
+}
+
+} // namespace skia
+
diff --git a/skia/ext/skia_utils_base.h b/skia/ext/skia_utils_base.h
new file mode 100644
index 0000000..cfddd31
--- /dev/null
+++ b/skia/ext/skia_utils_base.h
@@ -0,0 +1,33 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SKIA_EXT_SKIA_UTILS_BASE_H_
+#define SKIA_EXT_SKIA_UTILS_BASE_H_
+
+#include "base/pickle.h"
+#include "third_party/skia/include/ports/SkFontConfigInterface.h"
+
+namespace skia {
+
+// Return true if the pickle/iterator contains a string. If so, and if str
+// is not null, copy that string into str.
+SK_API bool ReadSkString(const Pickle& pickle, PickleIterator* iter,
+ SkString* str);
+
+// Return true if the pickle/iterator contains a FontIdentity. If so, and if
+// identity is not null, copy it into identity.
+SK_API bool ReadSkFontIdentity(const Pickle& pickle, PickleIterator* iter,
+ SkFontConfigInterface::FontIdentity* identity);
+
+// Return true if str can be written into the request pickle.
+SK_API bool WriteSkString(Pickle* pickle, const SkString& str);
+
+// Return true if identity can be written into the request pickle.
+SK_API bool WriteSkFontIdentity(Pickle* pickle,
+ const SkFontConfigInterface::FontIdentity& identity);
+
+} // namespace skia
+
+#endif // SKIA_EXT_SKIA_UTILS_BASE_H_
+
diff --git a/skia/skia.gyp b/skia/skia.gyp
index 8c3aa6b..6fcdc5c 100644
--- a/skia/skia.gyp
+++ b/skia/skia.gyp
@@ -182,6 +182,8 @@
'ext/skia_sandbox_support_win.h',
'ext/skia_sandbox_support_win.cc',
'ext/skia_trace_shim.h',
+ 'ext/skia_utils_base.cc',
+ 'ext/skia_utils_base.h',
'ext/skia_utils_ios.mm',
'ext/skia_utils_ios.h',
'ext/skia_utils_mac.mm',
@@ -375,8 +377,11 @@
'-Wno-unused-function',
],
'sources': [
- 'ext/SkFontHost_fontconfig.cpp',
- 'ext/SkFontHost_fontconfig_direct.cpp',
+ '../third_party/skia/src/ports/SkFontHost_fontconfig.cpp',
+ '../third_party/skia/src/ports/SkFontConfigInterface_direct.cpp',
+ ],
+ 'sources!': [
+ '../third_party/skia/src/ports/SkFontHost_tables.cpp',
],
'defines': [
# 'SK_USE_COLOR_LUMINANCE',