sij/mapnik
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Define new interface for glyph_positions.

Browse source
This commit is contained in:
Hermann Kraus 2012-07-09 22:23:54 +02:00
parent 09a0483028
commit 514a0da09e
1 changed files with 18 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
include/mapnik/text/placement_finder_ng.hpp
View file

@ -25,6 +25,8 @@
//mapnik
#include <mapnik/box2d.hpp>
#include <mapnik/pixel_position.hpp>
#include <mapnik/text/glyph_info.hpp>
#include <mapnik/text/char_properties_ptr.hpp>
//stl
#include <list>
@ -45,11 +47,27 @@ typedef feature_impl Feature;
class text_layout;
typedef boost::shared_ptr<text_layout> text_layout_ptr;
/** Stores positions of glphys.
*
* The actual glyphs and their format is stored in text_layout.
* For point placements only the base point is stored, glyph positions
* are defined by information in text_layout.
*/
class glyph_positions
{
public:
glyph_positions(text_layout_ptr layout);
void point_placement(pixel_position base_point);
bool is_point_placement() const { return point_; }
bool next();
void rewind();
glyph_info const& get_glyph() const;
pixel_position get_position() const;
double get_angle() const;
char_properties_ptr get_format() const;
/** Is each character rotated by the same angle?
* This function is used to avoid costly trigonometric function calls when not necessary. */
bool is_constant_angle() const;
private:
pixel_position base_point_;
bool point_;