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GOPath

GOPath

Types and Values

Object Hierarchy

    GBoxed
    ╰── GOPath

Description

Functions

GOPathClosePathFunc ()

void
(*GOPathClosePathFunc) (void *closure);


GOPathCurveToFunc ()

void
(*GOPathCurveToFunc) (void *closure,
                      GOPathPoint const *point0,
                      GOPathPoint const *point1,
                      GOPathPoint const *point2);


GOPathLineToFunc ()

void
(*GOPathLineToFunc) (void *closure,
                     GOPathPoint const *point);


GOPathMoveToFunc ()

void
(*GOPathMoveToFunc) (void *closure,
                     GOPathPoint const *point);


go_path_append ()

GOPath *
go_path_append (GOPath *path1,
                GOPath const *path2);

Appends path2 at the end of path1 .

Parameters

path1

GOPath

 

path2

GOPath

 

Returns

path1


go_path_arc ()

void
go_path_arc (GOPath *path,
             double cx,
             double cy,
             double rx,
             double ry,
             double th0,
             double th1);


go_path_arc_to ()

void
go_path_arc_to (GOPath *path,
                double cx,
                double cy,
                double rx,
                double ry,
                double th0,
                double th1);


go_path_clear ()

void
go_path_clear (GOPath *path);


go_path_close ()

void
go_path_close (GOPath *path);


go_path_copy ()

GOPath *
go_path_copy (GOPath const *path);

Parameters

path

GOPath

 

Returns

a new GOPath identical to path .


go_path_copy_restricted ()

GOPath *
go_path_copy_restricted (GOPath const *path,
                         gssize start,
                         gssize end);

Copies actions between start and end will be copied inside a new GOPath.

Parameters

path

GOPath

 

start

the first action to copy

 

end

the second action to copy

 

Returns

a new GOPath. If start or end is negative, it is not taken into account.

Since 0.10.5


go_path_curve_to ()

void
go_path_curve_to (GOPath *path,
                  double x0,
                  double y0,
                  double x1,
                  double y1,
                  double x2,
                  double y2);


go_path_free ()

void
go_path_free (GOPath *path);

Decrements references count and frees all memory allocated for path if references count reaches 0.

Parameters

path

a GOPath

 

go_path_get_options ()

GOPathOptions
go_path_get_options (GOPath const *path);

Returns


go_path_interpret ()

void
go_path_interpret (GOPath const *path,
                   GOPathDirection direction,
                   GOPathMoveToFunc move_to,
                   GOPathLineToFunc line_to,
                   GOPathCurveToFunc curve_to,
                   GOPathClosePathFunc close_path,
                   void *closure);

This function can be used to draw a path or for other purposes. To draw using cairo, the closure argument should be a valid cairo_t.

Parameters

path

GOPath

 

direction

GOPathDirection

 

move_to

the callback for move to.

[scope call]

line_to

the callback for drawing a line.

[scope call]

curve_to

the callback for drawing a bezier cubic spline.

[scope call]

close_path

the callback for closing the path.

[scope call]

closure

data to pass as first argument to the callbacks.

 

go_path_interpret_full ()

void
go_path_interpret_full (GOPath const *path,
                        gssize start,
                        gssize end,
                        GOPathDirection direction,
                        GOPathMoveToFunc move_to,
                        GOPathLineToFunc line_to,
                        GOPathCurveToFunc curve_to,
                        GOPathClosePathFunc close_path,
                        void *closure);

This function can be used to draw a portion path or for other purposes. Only actions between start and end will be executed. If start or end is negative, it is not taken into account.

Parameters

path

GOPath

 

start

index of the first action to interpret

 

end

index of the last action to interpret

 

direction

GOPathDirection

 

move_to

the callback for move to.

[scope call]

line_to

the callback for drawing a line.

[scope call]

curve_to

the callback for drawing a bezier cubic spline.

[scope call]

close_path

the callback for closing the path.

[scope call]

closure

data to pass as first argument to the callbacks.

 

Since 0.10.5


go_path_line_to ()

void
go_path_line_to (GOPath *path,
                 double x,
                 double y);


go_path_move_to ()

void
go_path_move_to (GOPath *path,
                 double x,
                 double y);


go_path_new ()

GOPath *
go_path_new (void);

Returns


go_path_new_from_odf_enhanced_path ()

GOPath *
go_path_new_from_odf_enhanced_path (char const *src,
                                    GHashTable const *variables);

Parameters

src

an ODF enhanced path.

 

Returns

the newly allocated GOPath or NULL on error.

[transfer full]


go_path_new_from_svg ()

GOPath *
go_path_new_from_svg (char const *src);

Parameters

src

an SVG path.

 

Returns

the newly allocated GOPath.

[transfer full]


go_path_pie_wedge ()

void
go_path_pie_wedge (GOPath *path,
                   double cx,
                   double cy,
                   double rx,
                   double ry,
                   double th0,
                   double th1);


go_path_rectangle ()

void
go_path_rectangle (GOPath *path,
                   double x,
                   double y,
                   double width,
                   double height);


go_path_ref ()

GOPath *
go_path_ref (GOPath *path);

Increments references count to path .

Parameters

path

a GOPath

 

Returns

the path with an incremented references count.


go_path_ring_wedge ()

void
go_path_ring_wedge (GOPath *path,
                    double cx,
                    double cy,
                    double rx_out,
                    double ry_out,
                    double rx_in,
                    double ry_in,
                    double th0,
                    double th1);


go_path_set_options ()

void
go_path_set_options (GOPath *path,
                     GOPathOptions options);

Change the rendering options for path using GO_PATH_OPTIONS_SNAP_COORDINATES GO_PATH_OPTIONS_SNAP_WIDTH GO_PATH_OPTIONS_SHARP

Parameters

path

a GOPath

 

options

GOPathOptions

 

go_path_to_cairo ()

void
go_path_to_cairo (GOPath const *path,
                  GOPathDirection direction,
                  cairo_t *cr);

Renders the path to the cairo context using its current settings.

Parameters

path

GOPath

 

direction

GOPathDirection

 

cr

cairo_t

 

go_path_to_svg ()

char *
go_path_to_svg (GOPath *path);

Builds an svg path from path .

Parameters

path

a GOPath

 

Returns

the svg:d string.

[transfer full]


go_path_scale ()

GOPath *
go_path_scale (GOPath *path,
               double scale_x,
               double scale_y);

Builds a scaled.

Parameters

path

GOPath

 

scale_x

horizontal scale.

 

scale_y

vertical scale.

 

Returns

the scaled path.

[transfer full]

Types and Values

GOPath

typedef struct _GOPath GOPath;


enum GOPathDirection

Members

GO_PATH_DIRECTION_FORWARD

go through the pass from start to end.

 

GO_PATH_DIRECTION_BACKWARD

go through the pass from end to start.

 

enum GOPathOptions

Members

GO_PATH_OPTIONS_SNAP_COORDINATES

round coordinates to avoid aliasing in pixbufs.

 

GO_PATH_OPTIONS_SNAP_WIDTH

round width so that it correpond to a round pixels number.

 

GO_PATH_OPTIONS_SHARP

use raw coordinates.

 

GOPathPoint

typedef struct {
	double x;
	double y;
} GOPathPoint;

Members

double x;

horizontal position.

 

double y;

vertical dimension.

 
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