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More documentation.

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This commit is contained in:
Hermann Kraus 2012-01-25 01:14:01 +01:00
parent 26c13d4df4
commit 37ba77550c
2 changed files with 11 additions and 3 deletions
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8
docs/textrendering.gv
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@ -13,8 +13,12 @@ digraph textrendering {
text_placements -> text_placement_info [label="get_placement_info()", style=dashed] text_placements -> text_placement_info [label="get_placement_info()", style=dashed]
text_placement_info -> text_symbolizer_properties [label="properties"] text_placement_info -> text_symbolizer_properties [label="properties"]
text_placement_info -> text_path [label="placements", style=dashed] text_placement_info -> text_path [label="placements", style=dashed]
text_placement_info -> text_placement_info [label="next()"]
text_symbolizer_properties -> text_processor [label="processor"] text_symbolizer_properties -> text_processor [label="processor"]
text_path -> Renderer [label="used by"] text_processor -> processed_text [label="process()", style=dashed]
processed_text -> string_info [label="get_string_info()"]
text_path -> Renderer [color=red, label="used by"]
Renderer -> text_placement_info [color=red, label="init()"] Renderer -> text_placement_info [color=red, label="init()"]
Renderer -> processed_text [color=red, label="initializes"]
} }

6
include/mapnik/text_processing.hpp
View file

@ -52,7 +52,9 @@ DEFINE_ENUM( text_transform_e, text_transform );
struct char_properties struct char_properties
{ {
char_properties(); char_properties();
/** Construct object from XML. */
void set_values_from_xml(boost::property_tree::ptree const &sym, std::map<std::string,font_set> const & fontsets); void set_values_from_xml(boost::property_tree::ptree const &sym, std::map<std::string,font_set> const & fontsets);
/** Write object to XML ptree. */
void to_xml(boost::property_tree::ptree &node, bool explicit_defaults, char_properties const &dfl=char_properties()) const; void to_xml(boost::property_tree::ptree &node, bool explicit_defaults, char_properties const &dfl=char_properties()) const;
std::string face_name; std::string face_name;
font_set fontset; font_set fontset;
@ -75,7 +77,6 @@ public:
p(properties), str(text) {} p(properties), str(text) {}
char_properties p; char_properties p;
UnicodeString str; UnicodeString str;
}; };
class processed_text class processed_text
@ -113,10 +114,13 @@ public:
* The output object has to be created by the caller and passed in for thread safety. * The output object has to be created by the caller and passed in for thread safety.
*/ */
void process(processed_text &output, Feature const& feature); void process(processed_text &output, Feature const& feature);
/** Automatically create processing instructions for a single expression. */
void set_old_style_expression(expression_ptr expr); void set_old_style_expression(expression_ptr expr);
/** Add a new formating token. */ /** Add a new formating token. */
void push_back(abstract_token *token); void push_back(abstract_token *token);
/** Get a list of all expressions used in any placement. This function is used to collect attributes. */
std::set<expression_ptr> get_all_expressions() const; std::set<expression_ptr> get_all_expressions() const;
/** Default values for char_properties. */
char_properties defaults; char_properties defaults;
protected: protected:
void from_xml_recursive(boost::property_tree::ptree const& pt, std::map<std::string,font_set> const &fontsets); void from_xml_recursive(boost::property_tree::ptree const& pt, std::map<std::string,font_set> const &fontsets);