GOLine

Synopsis

enum                GOLineDashType;
                    GOLineDashSequence;
GOLineDashType      go_line_dash_from_str               (char const *name);
char const 		*      go_line_dash_as_str                 (GOLineDashType type);
char const 		*      go_line_dash_as_label               (GOLineDashType type);
double              go_line_dash_get_length             (GOLineDashType type);
GOLineDashSequence * go_line_dash_get_sequence          (GOLineDashType type,
                                                         double scale);
void                go_line_dash_sequence_free          (GOLineDashSequence *sequence);
GtkWidget *         go_line_dash_selector_new           (GOLineDashType initial_type,
                                                         GOLineDashType default_type);
enum                GOLineInterpolation;
GOLineInterpolation  go_line_interpolation_from_str     (char const *name);
char const 		*      go_line_interpolation_as_str        (GOLineInterpolation type);
char const 		*      go_line_interpolation_as_label      (GOLineInterpolation type);
gboolean            go_line_interpolation_supports_radial
                                                        (GOLineInterpolation type);
gboolean            go_line_interpolation_auto_skip     (GOLineInterpolation type);

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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