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GOLine

GOLine

Description

Details

enum GOLineDashType

typedef enum {
	GO_LINE_NONE,
	GO_LINE_SOLID,
	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
} GOLineDashType;

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;


go_line_dash_from_str ()

GOLineDashType      go_line_dash_from_str               (char const *name);

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);

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);

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);

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);

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.

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.

initial_type :

line type initially selected

default_type :

automatic line type

Returns :

a new GtkWidget.

enum GOLineInterpolation

typedef enum {
	GO_LINE_INTERPOLATION_LINEAR,
	GO_LINE_INTERPOLATION_SPLINE,
	GO_LINE_INTERPOLATION_CLOSED_SPLINE,
	GO_LINE_INTERPOLATION_CUBIC_SPLINE,
	GO_LINE_INTERPOLATION_PARABOLIC_CUBIC_SPLINE,
	GO_LINE_INTERPOLATION_CUBIC_CUBIC_SPLINE,
	GO_LINE_INTERPOLATION_CLAMPED_CUBIC_SPLINE,
	GO_LINE_INTERPOLATION_STEP_START,
	GO_LINE_INTERPOLATION_STEP_END,
	GO_LINE_INTERPOLATION_STEP_CENTER_X,
	GO_LINE_INTERPOLATION_STEP_CENTER_Y,
	GO_LINE_INTERPOLATION_MAX
} GOLineInterpolation;

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.

go_line_interpolation_from_str ()

GOLineInterpolation  go_line_interpolation_from_str     (char const *name);

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);

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);

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);

type :

Returns :


go_line_interpolation_auto_skip ()

gboolean            go_line_interpolation_auto_skip     (GOLineInterpolation type);

type :

Returns :

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