GOLine

GOLine

Functions

Types and Values

Description

Functions

go_line_dash_from_str ()

GOLineDashType
go_line_dash_from_str (char const *name);

Parameters

name

Name of the dash type

 

Returns

a GOLineDashType corresponding to name, or GO_LINE_NONE if not found.


go_line_dash_as_str ()

char const 		*
go_line_dash_as_str (GOLineDashType type);

Parameters

type

a GOLineDashType

 

Returns

a pointer to the nickname of the dash type, or "none" if type is invalid. The returning string should not be freed.


go_line_dash_as_label ()

char const 		*
go_line_dash_as_label (GOLineDashType type);

Parameters

type

a GOLineDashType

 

Returns

a pointer to the user readable name of the dash type, or the name of GO_LINE_NONE if type is invalid. The returned string should not be freed.


go_line_dash_get_length ()

double
go_line_dash_get_length (GOLineDashType type);

Parameters

type

GOLineDashType

 

Returns

the unscaled length of the dash sequence.


go_line_dash_get_sequence ()

GOLineDashSequence *
go_line_dash_get_sequence (GOLineDashType type,
                           double scale);

Parameters

type

a GOLineDashType

 

scale

dash scale

 

Returns

a struct containing the dash sequence corresponding to type , or NULL if type is invalid or equal to GO_LINE_NONE. The lengths are scaled according to scale .


go_line_dash_sequence_free ()

void
go_line_dash_sequence_free (GOLineDashSequence *sequence);

Frees the dash sequence struct.

Parameters

sequence

a GOLineDashSequence

 

go_line_dash_selector_new ()

GtkWidget *
go_line_dash_selector_new (GOLineDashType initial_type,
                           GOLineDashType default_type);

Creates a new line type selector.

Parameters

initial_type

line type initially selected

 

default_type

automatic line type

 

Returns

a new GtkWidget.


go_line_interpolation_from_str ()

GOLineInterpolation
go_line_interpolation_from_str (char const *name);

Parameters

name

an interpolation type nickname

 

Returns

a GOLineInterpolation corresponding to name , or GO_LINE_INTERPOLATION_LINEAR if not found.


go_line_interpolation_as_str ()

char const 		*
go_line_interpolation_as_str (GOLineInterpolation type);

Parameters

type

an interpolation type

 

Returns

TRUE if the line interpolation type forces skipping invalid data, FALSE if it is only optional.


go_line_interpolation_as_label ()

char const 		*
go_line_interpolation_as_label (GOLineInterpolation type);

Parameters

type

an interpolation type

 

Returns

a pointer to the label of type , or the name of GO_LINE_INTERPOLATION_LINEAR if type is invalid. The returned string should not be freed.


go_line_interpolation_supports_radial ()

gboolean
go_line_interpolation_supports_radial (GOLineInterpolation type);


go_line_interpolation_auto_skip ()

gboolean
go_line_interpolation_auto_skip (GOLineInterpolation type);

Types and Values

enum GOLineDashType

Members

GO_LINE_NONE

No line displayed.

 

GO_LINE_SOLID

Solid line.

 

GO_LINE_S_DOT

   

GO_LINE_S_DASH_DOT

   

GO_LINE_S_DASH_DOT_DOT

   

GO_LINE_DASH_DOT_DOT_DOT

   

GO_LINE_DOT

   

GO_LINE_S_DASH

   

GO_LINE_DASH

   

GO_LINE_LONG_DASH

   

GO_LINE_DASH_DOT

   

GO_LINE_DASH_DOT_DOT

   

GO_LINE_MAX

   

GOLineDashSequence

typedef struct {
	double		 offset;
	unsigned int	 n_dash;
	double		*dash;
} GOLineDashSequence;


enum GOLineInterpolation

Members

GO_LINE_INTERPOLATION_LINEAR

Linear interpolation.

 

GO_LINE_INTERPOLATION_SPLINE

Bezier cubic spline interpolation.

 

GO_LINE_INTERPOLATION_CLOSED_SPLINE

Closed Bezier cubic spline interpolation.

 

GO_LINE_INTERPOLATION_CUBIC_SPLINE

Cubic spline interpolation with natural limits.

 

GO_LINE_INTERPOLATION_PARABOLIC_CUBIC_SPLINE

Cubic spline interpolation with parabolic limits.

 

GO_LINE_INTERPOLATION_CUBIC_CUBIC_SPLINE

Cubic spline interpolation with cubic limits.

 

GO_LINE_INTERPOLATION_CLAMPED_CUBIC_SPLINE

Cubic spline interpolation with fixed derivatives at both ends.

 

GO_LINE_INTERPOLATION_STEP_START

Steps using first y value.

 

GO_LINE_INTERPOLATION_STEP_END

Steps using last y value.

 

GO_LINE_INTERPOLATION_STEP_CENTER_X

Steps centered around each point.

 

GO_LINE_INTERPOLATION_STEP_CENTER_Y

Steps using mean y value.

 

GO_LINE_INTERPOLATION_MAX

First invalid value.