bool font_face::glyph_dimensions(glyph_info & glyph) const
{
FT_Vector pen;
pen.x = 0;
pen.y = 0;
FT_Set_Transform(face_, 0, &pen);
if (FT_Load_Glyph(face_, glyph.glyph_index, FT_LOAD_NO_HINTING))
{
MAPNIK_LOG_ERROR(font_face) << "FT_Load_Glyph failed";
return false;
}
FT_Glyph image;
if (FT_Get_Glyph(face_->glyph, &image))
{
MAPNIK_LOG_ERROR(font_face) << "FT_Get_Glyph failed";
return false;
}
FT_BBox glyph_bbox;
FT_Glyph_Get_CBox(image, FT_GLYPH_BBOX_TRUNCATE, &glyph_bbox);
FT_Done_Glyph(image);
glyph.unscaled_ymin = glyph_bbox.yMin;
glyph.unscaled_ymax = glyph_bbox.yMax;
glyph.unscaled_advance = face_->glyph->advance.x;
glyph.unscaled_line_height = face_->size->metrics.height;
glyph.unscaled_ascender = unscaled_ascender_;
return true;
}
text_placements_ptr text_placements_simple::from_xml(xml_node const& xml, fontset_map const& fontsets, bool is_shield)
{
// TODO - handle X cleaner
std::string placements_string = xml.get_attr<std::string>("placements", "X");
// like set_property_from_xml in properties_util.hpp
if (!placements_string.empty())
{
if (placements_string == "X")
{
text_placements_ptr ptr = std::make_shared<text_placements_simple>(placements_string);
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
else
{
try
{
// we don't use parse_expression(placements_string) directly here to benefit from the cache in the xml_node
boost::optional<expression_ptr> val = xml.get_opt_attr<expression_ptr>("placements");
if (val)
{
text_placements_ptr ptr = std::make_shared<text_placements_simple>(*val);
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
}
catch (std::exception const& ex)
{
// otherwise ensure it is valid
std::vector<directions_e> direction;
std::vector<int> text_sizes;
if (!parse_positions(placements_string,direction,text_sizes))
{
MAPNIK_LOG_ERROR(text_placements) << "Could not parse text_placement_simple placement string ('" << placements_string << "')";
if (direction.size() == 0)
{
MAPNIK_LOG_ERROR(text_placements) << "text_placements_simple with no valid placements! ('"<< placements_string <<"')";
}
return text_placements_ptr();
}
else
{
text_placements_ptr ptr = std::make_shared<text_placements_simple>(placements_string,std::move(direction),std::move(text_sizes));
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
}
text_placements_ptr ptr = std::make_shared<text_placements_simple>(placements_string);
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
}
return text_placements_ptr();
}
bool datasource_cache::register_datasource(std::string const& filename)
{
#ifdef MAPNIK_THREADSAFE
std::lock_guard<std::recursive_mutex> lock(instance_mutex_);
#endif
try
{
if (!mapnik::util::exists(filename))
{
MAPNIK_LOG_ERROR(datasource_cache)
<< "Cannot load '"
<< filename << "' (plugin does not exist)";
return false;
}
std::shared_ptr<PluginInfo> plugin = std::make_shared<PluginInfo>(filename,"datasource_name");
if (plugin->valid())
{
if (plugin->name().empty())
{
MAPNIK_LOG_ERROR(datasource_cache)
<< "Problem loading plugin library '"
<< filename << "' (plugin is lacking compatible interface)";
}
else
{
if (plugins_.emplace(plugin->name(),plugin).second)
{
MAPNIK_LOG_DEBUG(datasource_cache)
<< "datasource_cache: Registered="
<< plugin->name();
return true;
}
}
}
else
{
MAPNIK_LOG_ERROR(datasource_cache)
<< "Problem loading plugin library: "
<< filename << " (dlopen failed - plugin likely has an unsatisfied dependency or incompatible ABI)";
}
}
catch (std::exception const& ex)
{
MAPNIK_LOG_ERROR(datasource_cache)
<< "Exception caught while loading plugin library: "
<< filename << " (" << ex.what() << ")";
}
return false;
}
bool freetype_engine::register_font(std::string const& file_name)
{
#ifdef MAPNIK_THREADSAFE
mapnik::scoped_lock lock(mutex_);
#endif
FT_Library library = 0;
FT_Error error = FT_Init_FreeType(&library);
if (error)
{
throw std::runtime_error("Failed to initialize FreeType2 library");
}
FT_Face face = 0;
int num_faces = 0;
bool success = false;
// some font files have multiple fonts in a file
// the count is in the 'root' face library[0]
// see the FT_FaceRec in freetype.h
for ( int i = 0; face == 0 || i < num_faces; i++ ) {
// if face is null then this is the first face
error = FT_New_Face (library,file_name.c_str(),i,&face);
if (error)
{
break;
}
// store num_faces locally, after FT_Done_Face it can not be accessed any more
if (!num_faces)
num_faces = face->num_faces;
// some fonts can lack names, skip them
// http://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_FaceRec
if (face->family_name && face->style_name)
{
std::string name = std::string(face->family_name) + " " + std::string(face->style_name);
// skip fonts with leading . in the name
if (!boost::algorithm::starts_with(name,"."))
{
name2file_.insert(std::make_pair(name, std::make_pair(i,file_name)));
success = true;
}
}
else
{
std::ostringstream s;
s << "Warning: unable to load font file '" << file_name << "' ";
if (!face->family_name && !face->style_name)
s << "which lacks both a family name and style name";
else if (face->family_name)
s << "which reports a family name of '" << std::string(face->family_name) << "' and lacks a style name";
else if (face->style_name)
s << "which reports a style name of '" << std::string(face->style_name) << "' and lacks a family name";
MAPNIK_LOG_ERROR(font_engine_freetype) << "register_font: " << s.str();
}
}
if (face)
FT_Done_Face(face);
if (library)
FT_Done_FreeType(library);
return success;
}
void xml_node::add_attribute(const char * name, const char * value)
{
auto result = attributes_.emplace(name,xml_attribute(value));
if (!result.second)
{
MAPNIK_LOG_ERROR(xml_tree) << "ignoring duplicate attribute '" << name << "'";
}
}
void text_symbolizer_helper<FaceManagerT, DetectorT>::initialize_points()
{
label_placement_enum how_placed = placement_->properties.label_placement;
if (how_placed == LINE_PLACEMENT)
{
point_placement_ = false;
return;
}
else
{
point_placement_ = true;
}
double label_x=0.0;
double label_y=0.0;
double z=0.0;
std::list<geometry_type*>::const_iterator itr = geometries_to_process_.begin();
std::list<geometry_type*>::const_iterator end = geometries_to_process_.end();
for (; itr != end; itr++)
{
geometry_type const& geom = **itr;
if (how_placed == VERTEX_PLACEMENT)
{
geom.rewind(0);
for(unsigned i = 0; i < geom.size(); i++)
{
geom.vertex(&label_x, &label_y);
prj_trans_.backward(label_x, label_y, z);
t_.forward(&label_x, &label_y);
points_.push_back(std::make_pair(label_x, label_y));
}
}
else
{
if (geom.type() == LineString)
{
label::middle_point(geom, label_x,label_y);
}
else if (how_placed == POINT_PLACEMENT)
{
label::centroid(geom, label_x, label_y);
}
else if (how_placed == INTERIOR_PLACEMENT)
{
label::interior_position(geom, label_x, label_y);
}
else
{
MAPNIK_LOG_ERROR(symbolizer_helpers) << "ERROR: Unknown placement type in initialize_points()";
}
prj_trans_.backward(label_x, label_y, z);
t_.forward(&label_x, &label_y);
points_.push_back(std::make_pair(label_x, label_y));
}
}
point_itr_ = points_.begin();
}
bool vertex_cache::backward(double length)
{
if (length < 0)
{
MAPNIK_LOG_ERROR(vertex_cache) << "vertex_cache::backward() called with negative argument!\n";
return false;
}
return move(-length);
}
bool datasource_cache::register_datasources(std::string const& dir, bool recurse)
{
#ifdef MAPNIK_THREADSAFE
mapnik::scoped_lock lock(mutex_);
#endif
if (!mapnik::util::exists(dir))
{
return false;
}
plugin_directories_.insert(dir);
if (!mapnik::util::is_directory(dir))
{
return register_datasource(dir);
}
bool success = false;
try
{
boost::filesystem::directory_iterator end_itr;
#ifdef _WINDOWS
std::wstring wide_dir(mapnik::utf8_to_utf16(dir));
for (boost::filesystem::directory_iterator itr(wide_dir); itr != end_itr; ++itr)
{
std::string file_name = mapnik::utf16_to_utf8(itr->path().wstring());
#else
for (boost::filesystem::directory_iterator itr(dir); itr != end_itr; ++itr)
{
std::string file_name = itr->path().string();
#endif
if (boost::filesystem::is_directory(*itr) && recurse)
{
if (register_datasources(file_name, true))
{
success = true;
}
}
else
{
std::string base_name = itr->path().filename().string();
if (!boost::algorithm::starts_with(base_name,".") &&
mapnik::util::is_regular_file(file_name) &&
is_input_plugin(file_name))
{
if (register_datasource(file_name))
{
success = true;
}
}
}
}
}
catch (std::exception const& ex)
{
MAPNIK_LOG_ERROR(datasource_cache) << "register_datasources: " << ex.what();
}
return success;
}
text_placement_info_simple::text_placement_info_simple(text_placements_simple const* parent,
std::string const& evaluated_positions,
double scale_factor)
: text_placement_info(parent, scale_factor),
state(0),
position_state(0),
direction_(parent->direction_),
text_sizes_(parent->text_sizes_),
parent_(parent)
{
if (direction_.empty() && !parse_positions(evaluated_positions,direction_,text_sizes_))
{
MAPNIK_LOG_ERROR(text_placements) << "Could not parse text_placement_simple placement string ('" << evaluated_positions << "')";
if (direction_.size() == 0)
{
MAPNIK_LOG_ERROR(text_placements) << "text_placements_simple with no valid placements! ('"<< evaluated_positions <<"')";
}
}
}
bool freetype_engine::register_fonts_impl(std::string const& dir,
font_library & library,
freetype_engine::font_file_mapping_type & font_file_mapping,
bool recurse)
{
if (!mapnik::util::exists(dir))
{
return false;
}
if (!mapnik::util::is_directory(dir))
{
return register_font_impl(dir, library, font_file_mapping);
}
bool success = false;
try
{
boost::filesystem::directory_iterator end_itr;
#ifdef _WINDOWS
std::wstring wide_dir(mapnik::utf8_to_utf16(dir));
for (boost::filesystem::directory_iterator itr(wide_dir); itr != end_itr; ++itr)
{
std::string file_name = mapnik::utf16_to_utf8(itr->path().wstring());
#else
for (boost::filesystem::directory_iterator itr(dir); itr != end_itr; ++itr)
{
std::string file_name = itr->path().string();
#endif
if (boost::filesystem::is_directory(*itr) && recurse)
{
if (register_fonts_impl(file_name, library, font_file_mapping, true))
{
success = true;
}
}
else
{
std::string base_name = itr->path().filename().string();
if (!boost::algorithm::starts_with(base_name,".") &&
mapnik::util::is_regular_file(file_name) &&
is_font_file(file_name))
{
if (register_font_impl(file_name, library, font_file_mapping))
{
success = true;
}
}
}
}
}
catch (std::exception const& ex)
{
MAPNIK_LOG_ERROR(font_engine_freetype) << "register_fonts: " << ex.what();
}
return success;
}
void text_itemizer::itemize_direction(unsigned start, unsigned end)
{
direction_runs_.clear();
UErrorCode error = U_ZERO_ERROR;
int32_t length = end - start;
UBiDi *bidi = ubidi_openSized(length, 0, &error);
if (!bidi || U_FAILURE(error))
{
MAPNIK_LOG_ERROR(text_itemizer) << "Failed to create bidi object: " << u_errorName(error) << "\n";
return;
}
ubidi_setPara(bidi, text_.getBuffer() + start, length, UBIDI_DEFAULT_LTR, 0, &error);
if (U_SUCCESS(error))
{
UBiDiDirection direction = ubidi_getDirection(bidi);
if (direction != UBIDI_MIXED)
{
direction_runs_.emplace_back(direction, start, end);
}
else
{
// mixed-directional
int32_t count = ubidi_countRuns(bidi, &error);
if(U_SUCCESS(error))
{
for(int i=0; i<count; ++i)
{
int32_t vis_length;
int32_t run_start;
direction = ubidi_getVisualRun(bidi, i, &run_start, &vis_length);
run_start += start; //Add offset to compensate offset in setPara
direction_runs_.emplace_back(direction, run_start, run_start+vis_length);
}
}
}
}
else
{
MAPNIK_LOG_ERROR(text_itemizer) << "ICU error: " << u_errorName(error) << "\n"; //TODO: Exception
}
ubidi_close(bidi);
}
~prepared_index_statement()
{
if (stmt_)
{
int res = sqlite3_finalize(stmt_);
if (res != SQLITE_OK)
{
if (*(*ds_))
{
MAPNIK_LOG_ERROR(sqlite) << "~prepared_index_statement:"
<< sqlite3_errmsg(*(*ds_));
}
else
{
MAPNIK_LOG_ERROR(sqlite) << "~prepared_index_statement:"
<< res;
}
}
}
}
Detector & detector(std::string const & key)
{
auto it = cache_.find(key);
if (it == cache_.end())
{
MAPNIK_LOG_ERROR(detector) << "Collision cache '" <<
key << "' does not exist. Default cache is used instead.";
return default_;
}
return it->second;
}
bool freetype_engine::register_fonts(std::string const& dir, bool recurse)
{
if (!mapnik::util::exists(dir))
{
return false;
}
if (!mapnik::util::is_directory(dir))
{
return mapnik::freetype_engine::register_font(dir);
}
bool success = false;
try
{
boost::filesystem::directory_iterator end_itr;
for (boost::filesystem::directory_iterator itr(dir); itr != end_itr; ++itr)
{
#if (BOOST_FILESYSTEM_VERSION == 3)
std::string file_name = itr->path().string();
#else // v2
std::string file_name = itr->string();
#endif
if (boost::filesystem::is_directory(*itr) && recurse)
{
if (register_fonts(file_name, true))
{
success = true;
}
}
else
{
#if (BOOST_FILESYSTEM_VERSION == 3)
std::string base_name = itr->path().filename().string();
#else // v2
std::string base_name = itr->filename();
#endif
if (!boost::algorithm::starts_with(base_name,".") &&
boost::filesystem::is_regular_file(file_name) &&
is_font_file(file_name))
{
if (mapnik::freetype_engine::register_font(file_name))
{
success = true;
}
}
}
}
}
catch (std::exception const& ex)
{
MAPNIK_LOG_ERROR(font_engine_freetype) << "register_fonts: " << ex.what();
}
return success;
}
bool datasource_cache::register_datasource(std::string const& str)
{
bool success = false;
try
{
lt_dlhandle module = lt_dlopen(str.c_str());
if (module)
{
// http://www.mr-edd.co.uk/blog/supressing_gcc_warnings
#ifdef __GNUC__
__extension__
#endif
datasource_name* ds_name =
reinterpret_cast<datasource_name*>(lt_dlsym(module, "datasource_name"));
if (ds_name && insert(ds_name(),module))
{
MAPNIK_LOG_DEBUG(datasource_cache) << "datasource_cache: Registered=" << ds_name();
success = true;
}
else if (!ds_name)
{
MAPNIK_LOG_ERROR(datasource_cache)
<< "Problem loading plugin library '"
<< str << "' (plugin is lacking compatible interface)";
}
}
else
{
MAPNIK_LOG_ERROR(datasource_cache)
<< "Problem loading plugin library: " << str
<< " (dlopen failed - plugin likely has an unsatisfied dependency or incompatible ABI)";
}
}
catch (...) {
MAPNIK_LOG_ERROR(datasource_cache)
<< "Exception caught while loading plugin library: " << str;
}
return success;
}
static inline boost::optional<mapnik::enumeration<T,MAX> > xml_attribute_cast_impl(xml_tree const& /*tree*/, std::string const& source)
{
using result_type = typename boost::optional<mapnik::enumeration<T,MAX> >;
try
{
mapnik::enumeration<T,MAX> e;
e.from_string(source);
return result_type(e);
}
catch (illegal_enum_value const& ex)
{
MAPNIK_LOG_ERROR(do_xml_attribute_cast) << ex.what();
return result_type();
}
}
void raster_symbolizer::set_mode(std::string const& mode)
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "setting 'mode' is deprecated and will be removed in Mapnik 3.x, use 'comp-op' with Mapnik >= 2.1.x";
mode_ = mode;
if (mode == "normal")
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "converting 'mode=normal' to 'comp-op:src_over'";
this->set_comp_op(src_over);
}
else
{
std::string mode2 = boost::algorithm::replace_last_copy(mode,"2","");
boost::optional<composite_mode_e> comp_op = comp_op_from_string(mode2);
if (comp_op)
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "converting 'mode:" << mode << "' to 'comp-op:" + *comp_op_to_string(*comp_op) + "'";
this->set_comp_op(*comp_op);
}
else
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "could not convert mode '" << mode << "' into comp-op, defaulting to 'comp-op:src-over'";
}
}
}
bool datasource_cache::register_datasources(std::string const& dir, bool recurse)
{
#ifdef MAPNIK_THREADSAFE
std::lock_guard<std::recursive_mutex> lock(instance_mutex_);
#endif
if (!mapnik::util::exists(dir))
{
return false;
}
plugin_directories_.insert(dir);
if (!mapnik::util::is_directory(dir))
{
return register_datasource(dir);
}
bool success = false;
try
{
for (std::string const& file_name : mapnik::util::list_directory(dir))
{
if (mapnik::util::is_directory(file_name) && recurse)
{
if (register_datasources(file_name, true))
{
success = true;
}
}
else
{
std::string base_name = mapnik::util::basename(file_name);
if (!boost::algorithm::starts_with(base_name,".") &&
mapnik::util::is_regular_file(file_name) &&
is_input_plugin(file_name))
{
if (register_datasource(file_name))
{
success = true;
}
}
}
}
}
catch (std::exception const& ex)
{
MAPNIK_LOG_ERROR(datasource_cache) << "register_datasources: " << ex.what();
}
return success;
}
bool freetype_engine::register_fonts_impl(std::string const& dir,
font_library & library,
freetype_engine::font_file_mapping_type & font_file_mapping,
bool recurse)
{
if (!mapnik::util::exists(dir))
{
return false;
}
if (!mapnik::util::is_directory(dir))
{
return register_font_impl(dir, library, font_file_mapping);
}
bool success = false;
try
{
for (std::string const& file_name : mapnik::util::list_directory(dir))
{
if (mapnik::util::is_directory(file_name) && recurse)
{
if (register_fonts_impl(file_name, library, font_file_mapping, true))
{
success = true;
}
}
else
{
std::string base_name = mapnik::util::basename(file_name);
if (!boost::algorithm::starts_with(base_name,".") &&
mapnik::util::is_regular_file(file_name) &&
is_font_file(file_name))
{
if (register_font_impl(file_name, library, font_file_mapping))
{
success = true;
}
}
}
}
}
catch (std::exception const& ex)
{
MAPNIK_LOG_ERROR(font_engine_freetype) << "register_fonts: " << ex.what();
}
return success;
}
result_type operator() (
Iterator,
Iterator end,
Iterator err_pos,
boost::spirit::info const& what) const
{
#ifdef MAPNIK_LOG
std::stringstream s;
using difference_type = typename std::iterator_traits<Iterator>::difference_type;
auto start_err = err_pos;
std::advance(err_pos, std::min(std::distance(err_pos, end), difference_type(16)));
auto end_err = err_pos;
assert(end_err <= end);
s << "Mapnik GeoJSON parsing error:" << what << " expected but got: " << std::string(start_err, end_err);
MAPNIK_LOG_ERROR(error_handler) << s.str();
#endif
return boost::spirit::qi::fail;
}
boost::optional<mapped_region_ptr> mapped_memory_cache::find(std::string const& uri, bool update_cache)
{
#ifdef MAPNIK_THREADSAFE
std::lock_guard<std::mutex> lock(mutex_);
#endif
using iterator_type = std::unordered_map<std::string, mapped_region_ptr>::const_iterator;
boost::optional<mapped_region_ptr> result;
iterator_type itr = cache_.find(uri);
if (itr != cache_.end())
{
result.reset(itr->second);
return result;
}
if (mapnik::util::exists(uri))
{
try
{
boost::interprocess::file_mapping mapping(uri.c_str(),boost::interprocess::read_only);
mapped_region_ptr region(std::make_shared<boost::interprocess::mapped_region>(mapping,boost::interprocess::read_only));
result.reset(region);
if (update_cache)
{
cache_.emplace(uri, *result);
}
return result;
}
catch (std::exception const& ex)
{
MAPNIK_LOG_ERROR(mapped_memory_cache)
<< "Error loading mapped memory file: '"
<< uri << "' (" << ex.what() << ")";
}
}
/*
else
{
MAPNIK_LOG_WARN(mapped_memory_cache) << "Memory region does not exist file: " << uri;
}
*/
return result;
}
image_gray8 create_bitmap(box2d<T> box)
{
if (!box.valid())
{
return image_gray8(0, 0);
}
try
{
return image_gray8(box.width(), box.height());
}
catch (std::runtime_error const & e)
{
// TODO: Scale down in this case.
MAPNIK_LOG_ERROR(grid_vertex_adapter) << "grid vertex adapter: Cannot allocate underlaying bitmap. Bbox: "
<< box.to_string() << "; " << e.what();
return image_gray8(0, 0);
}
}
void text_placement_info_combined::apply_placement(text_placement_info_ptr placement_info) const
{
text_placement_info_simple* simple = dynamic_cast<text_placement_info_simple*>(placement_info.get());
if (simple)
{
apply_simple_placement();
}
else
{
text_placement_info_list* list = dynamic_cast<text_placement_info_list*>(placement_info.get());
if (list)
{
apply_list_placement();
}
else
{
MAPNIK_LOG_ERROR(text_placement_info_combined) << "Could not apply unknown placement info ptr";
}
}
}
/** Converts @p str to an enum.
* @throw illegal_enum_value @p str is not a legal identifier.
* */
void from_string(std::string const& str)
{
// TODO: Enum value strings with underscore are deprecated in Mapnik 3.x
// and support will be removed in Mapnik 4.x.
bool deprecated = false;
std::string str_copy(str);
if (str_copy.find('_') != std::string::npos)
{
std::replace(str_copy.begin(), str_copy.end(), '_', '-');
deprecated = true;
}
for (unsigned i = 0; i < THE_MAX; ++i)
{
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunknown-pragmas" // clang+gcc
#pragma GCC diagnostic ignored "-Wpragmas" // gcc
#pragma GCC diagnostic ignored "-Wundefined-var-template"
if (str_copy == our_strings_[i])
#pragma GCC diagnostic pop
{
value_ = static_cast<ENUM>(i);
if (deprecated)
{
MAPNIK_LOG_ERROR(enumerations) << "enumeration value (" << str << ") using \"_\" is deprecated and will be removed in Mapnik 4.x, use '" << str_copy << "' instead";
}
return;
}
}
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunknown-pragmas" // clang+gcc
#pragma GCC diagnostic ignored "-Wpragmas" // gcc
#pragma GCC diagnostic ignored "-Wundefined-var-template"
throw illegal_enum_value(std::string("Illegal enumeration value '") +
str + "' for enum " + our_name_);
#pragma GCC diagnostic pop
}
bool freetype_engine::register_font_impl(std::string const& file_name, FT_LibraryRec_ * library)
{
#ifdef _WINDOWS
FILE * file = _wfopen(mapnik::utf8_to_utf16(file_name).c_str(), L"rb");
#else
FILE * file = std::fopen(file_name.c_str(),"rb");
#endif
if (file == nullptr) return false;
FT_Face face = 0;
FT_Open_Args args;
FT_StreamRec streamRec;
memset(&args, 0, sizeof(args));
memset(&streamRec, 0, sizeof(streamRec));
fseek(file, 0, SEEK_END);
std::size_t file_size = std::ftell(file);
fseek(file, 0, SEEK_SET);
streamRec.base = 0;
streamRec.pos = 0;
streamRec.size = file_size;
streamRec.descriptor.pointer = file;
streamRec.read = ft_read_cb;
streamRec.close = ft_close_cb;
args.flags = FT_OPEN_STREAM;
args.stream = &streamRec;
int num_faces = 0;
bool success = false;
// some font files have multiple fonts in a file
// the count is in the 'root' face library[0]
// see the FT_FaceRec in freetype.h
for ( int i = 0; face == 0 || i < num_faces; ++i )
{
// if face is null then this is the first face
FT_Error error = FT_Open_Face(library, &args, i, &face);
if (error) break;
// store num_faces locally, after FT_Done_Face it can not be accessed any more
if (num_faces == 0)
num_faces = face->num_faces;
// some fonts can lack names, skip them
// http://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_FaceRec
if (face->family_name && face->style_name)
{
std::string name = std::string(face->family_name) + " " + std::string(face->style_name);
// skip fonts with leading . in the name
if (!boost::algorithm::starts_with(name,"."))
{
name2file_.insert(std::make_pair(name, std::make_pair(i,file_name)));
success = true;
}
}
else
{
std::ostringstream s;
s << "Warning: unable to load font file '" << file_name << "' ";
if (!face->family_name && !face->style_name)
s << "which lacks both a family name and style name";
else if (face->family_name)
s << "which reports a family name of '" << std::string(face->family_name) << "' and lacks a style name";
else if (face->style_name)
s << "which reports a style name of '" << std::string(face->style_name) << "' and lacks a family name";
MAPNIK_LOG_ERROR(font_engine_freetype) << "register_font: " << s.str();
}
if (face) FT_Done_Face(face);
}
return success;
}
// In the Unicode string characters are always stored in logical order.
// This makes line breaking easy. One word is added to the current line at a time. Once the line is too long
// we either go back one step or insert the line break at the current position (depending on "wrap_before" setting).
// At the end everything that is left over is added as the final line.
void text_layout::break_line_icu(std::pair<unsigned, unsigned> && line_limits)
{
text_line line(line_limits.first, line_limits.second);
shape_text(line);
double scaled_wrap_width = wrap_width_ * scale_factor_;
if (scaled_wrap_width <= 0 || line.width() < scaled_wrap_width)
{
add_line(std::move(line));
return;
}
if (text_ratio_ > 0)
{
double wrap_at;
double string_width = line.width();
double string_height = line.line_height();
for (double i = 1.0;
((wrap_at = string_width/i)/(string_height*i)) > text_ratio_ && (string_width/i) > scaled_wrap_width;
i += 1.0) ;
scaled_wrap_width = wrap_at;
}
mapnik::value_unicode_string const& text = itemizer_.text();
Locale locale; // TODO: Is the default constructor correct?
UErrorCode status = U_ZERO_ERROR;
std::unique_ptr<BreakIterator> breakitr(BreakIterator::createLineInstance(locale, status));
// Not breaking the text if an error occurs is probably the best thing we can do.
// https://github.com/mapnik/mapnik/issues/2072
if (!U_SUCCESS(status))
{
add_line(std::move(line));
MAPNIK_LOG_ERROR(text_layout) << " could not create BreakIterator: " << u_errorName(status);
return;
}
breakitr->setText(text);
double current_line_length = 0;
int last_break_position = static_cast<int>(line.first_char());
for (unsigned i = line.first_char(); i < line.last_char(); ++i)
{
// TODO: character_spacing
std::map<unsigned, double>::const_iterator width_itr = width_map_.find(i);
if (width_itr != width_map_.end())
{
current_line_length += width_itr->second;
}
if (current_line_length <= scaled_wrap_width) continue;
int break_position = wrap_before_ ? breakitr->preceding(i + 1) : breakitr->following(i);
// following() returns a break position after the last word. So DONE should only be returned
// when calling preceding.
if (break_position <= last_break_position || break_position == static_cast<int>(BreakIterator::DONE))
{
// A single word is longer than the maximum line width.
// Violate line width requirement and choose next break position
break_position = breakitr->following(i);
if (break_position == static_cast<int>(BreakIterator::DONE))
{
break_position = line.last_char();
MAPNIK_LOG_ERROR(text_layout) << "Unexpected result in break_line. Trying to recover...\n";
}
}
// Break iterator operates on the whole string, while we only look at one line. So we need to
// clamp break values.
if (break_position < static_cast<int>(line.first_char()))
{
break_position = line.first_char();
}
if (break_position > static_cast<int>(line.last_char()))
{
break_position = line.last_char();
}
bool adjust_for_space_character = break_position > 0 && text[break_position - 1] == 0x0020;
text_line new_line(last_break_position, adjust_for_space_character ? break_position - 1 : break_position);
clear_cluster_widths(last_break_position, adjust_for_space_character ? break_position - 1 : break_position);
shape_text(new_line);
add_line(std::move(new_line));
last_break_position = break_position;
i = break_position - 1;
current_line_length = 0;
}
if (last_break_position == static_cast<int>(line.first_char()))
{
// No line breaks => no reshaping required
add_line(std::move(line));
}
else if (last_break_position != static_cast<int>(line.last_char()))
{
text_line new_line(last_break_position, line.last_char());
clear_cluster_widths(last_break_position, line.last_char());
shape_text(new_line);
add_line(std::move(new_line));
}
}
static void shape_text(text_line & line,
text_itemizer & itemizer,
std::map<unsigned,double> & width_map,
face_manager_freetype & font_manager,
double scale_factor )
{
unsigned start = line.first_char();
unsigned end = line.last_char();
mapnik::value_unicode_string const& text = itemizer.text();
size_t length = end - start;
if (!length) return;
line.reserve(length);
std::list<text_item> const& list = itemizer.itemize(start, end);
UErrorCode err = U_ZERO_ERROR;
mapnik::value_unicode_string shaped;
mapnik::value_unicode_string reordered;
for (auto const& text_item : list)
{
face_set_ptr face_set = font_manager.get_face_set(text_item.format->face_name, text_item.format->fontset);
double size = text_item.format->text_size * scale_factor;
face_set->set_unscaled_character_sizes();
for (auto const& face : *face_set)
{
UBiDi *bidi = ubidi_openSized(length, 0, &err);
ubidi_setPara(bidi, text.getBuffer(), length, UBIDI_DEFAULT_LTR, 0, &err);
ubidi_writeReordered(bidi, reordered.getBuffer(length),
length, UBIDI_DO_MIRRORING, &err);
ubidi_close(bidi);
reordered.releaseBuffer(length);
int32_t num_char = u_shapeArabic(reordered.getBuffer(), length,
shaped.getBuffer(length), length,
U_SHAPE_LETTERS_SHAPE | U_SHAPE_LENGTH_FIXED_SPACES_NEAR |
U_SHAPE_TEXT_DIRECTION_VISUAL_LTR, &err);
if (num_char < 0)
{
MAPNIK_LOG_ERROR(icu_shaper) << " u_shapeArabic returned negative num_char " << num_char;
}
std::size_t num_chars = static_cast<std::size_t>(num_char);
shaped.releaseBuffer(length);
bool shaped_status = true;
if (U_SUCCESS(err) && (num_chars == length))
{
U_NAMESPACE_QUALIFIER StringCharacterIterator iter(shaped);
unsigned i = 0;
for (iter.setToStart(); iter.hasNext();)
{
UChar ch = iter.nextPostInc();
glyph_info tmp;
tmp.offset.clear();
tmp.char_index = i;
tmp.glyph_index = FT_Get_Char_Index(face->get_face(), ch);
if (tmp.glyph_index == 0)
{
shaped_status = false;
break;
}
tmp.face = face;
tmp.format = text_item.format;
face->glyph_dimensions(tmp);
tmp.scale_multiplier = size / face->get_face()->units_per_EM;
width_map[i] += tmp.advance();
line.add_glyph(std::move(tmp), scale_factor);
++i;
}
}
if (!shaped_status) continue;
line.update_max_char_height(face->get_char_height(size));
return;
}
}
}
void base_symbolizer_helper::initialize_points()
{
label_placement_enum how_placed = placement_->properties.label_placement;
if (how_placed == LINE_PLACEMENT)
{
point_placement_ = false;
return;
}
else
{
point_placement_ = true;
}
double label_x=0.0;
double label_y=0.0;
double z=0.0;
for (auto * geom_ptr : geometries_to_process_)
{
geometry_type const& geom = *geom_ptr;
if (how_placed == VERTEX_PLACEMENT)
{
geom.rewind(0);
for(unsigned i = 0; i < geom.size(); ++i)
{
geom.vertex(&label_x, &label_y);
prj_trans_.backward(label_x, label_y, z);
t_.forward(&label_x, &label_y);
points_.push_back(pixel_position(label_x, label_y));
}
}
else
{
// https://github.com/mapnik/mapnik/issues/1423
bool success = false;
// https://github.com/mapnik/mapnik/issues/1350
if (geom.type() == geometry_type::types::LineString)
{
success = label::middle_point(geom, label_x,label_y);
}
else if (how_placed == POINT_PLACEMENT)
{
success = label::centroid(geom, label_x, label_y);
}
else if (how_placed == INTERIOR_PLACEMENT)
{
success = label::interior_position(geom, label_x, label_y);
}
else
{
MAPNIK_LOG_ERROR(symbolizer_helpers) << "ERROR: Unknown placement type in initialize_points()";
}
if (success)
{
prj_trans_.backward(label_x, label_y, z);
t_.forward(&label_x, &label_y);
points_.push_back(pixel_position(label_x, label_y));
}
}
}
point_itr_ = points_.begin();
}
void Map::zoom_all()
{
try
{
if (layers_.empty())
{
return;
}
projection proj0(srs_);
box2d<double> ext;
bool success = false;
bool first = true;
std::vector<layer>::const_iterator itr = layers_.begin();
std::vector<layer>::const_iterator end = layers_.end();
while (itr != end)
{
if (itr->active())
{
std::string const& layer_srs = itr->srs();
projection proj1(layer_srs);
proj_transform prj_trans(proj0,proj1);
box2d<double> layer_ext = itr->envelope();
if (prj_trans.backward(layer_ext, PROJ_ENVELOPE_POINTS))
{
success = true;
MAPNIK_LOG_DEBUG(map) << "map: Layer " << itr->name() << " original ext=" << itr->envelope();
MAPNIK_LOG_DEBUG(map) << "map: Layer " << itr->name() << " transformed to map srs=" << layer_ext;
if (first)
{
ext = layer_ext;
first = false;
}
else
{
ext.expand_to_include(layer_ext);
}
}
}
++itr;
}
if (success)
{
if (maximum_extent_) {
ext.clip(*maximum_extent_);
}
zoom_to_box(ext);
}
else
{
if (maximum_extent_)
{
MAPNIK_LOG_ERROR(map) << "could not zoom to combined layer extents"
<< " so falling back to maximum-extent for zoom_all result";
zoom_to_box(*maximum_extent_);
}
else
{
std::ostringstream s;
s << "could not zoom to combined layer extents "
<< "using zoom_all because proj4 could not "
<< "back project any layer extents into the map srs "
<< "(set map 'maximum-extent' to override layer extents)";
throw std::runtime_error(s.str());
}
}
}
catch (proj_init_error const& ex)
{
throw mapnik::config_error(std::string("Projection error during map.zoom_all: ") + ex.what());
}
}
bool freetype_engine::register_font_impl(std::string const& file_name,
font_library & library,
freetype_engine::font_file_mapping_type & font_file_mapping)
{
MAPNIK_LOG_DEBUG(font_engine_freetype) << "registering: " << file_name;
mapnik::util::file file(file_name);
if (!file) return false;
FT_Face face = 0;
FT_Open_Args args;
FT_StreamRec streamRec;
memset(&args, 0, sizeof(args));
memset(&streamRec, 0, sizeof(streamRec));
streamRec.base = 0;
streamRec.pos = 0;
streamRec.size = file.size();
streamRec.descriptor.pointer = file.get();
streamRec.read = ft_read_cb;
streamRec.close = nullptr;
args.flags = FT_OPEN_STREAM;
args.stream = &streamRec;
int num_faces = 0;
bool success = false;
// some font files have multiple fonts in a file
// the count is in the 'root' face library[0]
// see the FT_FaceRec in freetype.h
for ( int i = 0; face == 0 || i < num_faces; ++i )
{
// if face is null then this is the first face
FT_Error error = FT_Open_Face(library.get(), &args, i, &face);
if (error) break;
// store num_faces locally, after FT_Done_Face it can not be accessed any more
if (num_faces == 0)
num_faces = face->num_faces;
// some fonts can lack names, skip them
// http://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_FaceRec
if (face->family_name && face->style_name)
{
std::string name = std::string(face->family_name) + " " + std::string(face->style_name);
// skip fonts with leading . in the name
if (!boost::algorithm::starts_with(name,"."))
{
// http://stackoverflow.com/a/24795559/2333354
auto range = font_file_mapping.equal_range(name);
if (range.first == range.second) // the key was previously absent; insert a pair
{
font_file_mapping.emplace_hint(range.first, name, std::make_pair(i,file_name));
}
else // the key was present, replace the associated value
{ /* some action with value range.first->second about to be overwritten here */
MAPNIK_LOG_WARN(font_engine_freetype) << "registering new " << name << " at '" << file_name << "'";
range.first->second = std::make_pair(i,file_name); // replace value
}
success = true;
}
}
else
{
std::ostringstream s;
s << "Warning: unable to load font file '" << file_name << "' ";
if (!face->family_name && !face->style_name)
s << "which lacks both a family name and style name";
else if (face->family_name)
s << "which reports a family name of '" << std::string(face->family_name) << "' and lacks a style name";
else if (face->style_name)
s << "which reports a style name of '" << std::string(face->style_name) << "' and lacks a family name";
MAPNIK_LOG_ERROR(font_engine_freetype) << "register_font: " << s.str();
}
if (face) FT_Done_Face(face);
}
return success;
}
