GocStyledItem

GocStyledItem — Styled items

Functions

Types and Values

Object Hierarchy

    GObject
    ╰── GocItem
        ╰── GocStyledItem
            ├── GocArc
            ├── GocCircle
            ├── GocEllipse
            ├── GocLine
            ├── GocPath
            ├── GocPolygon
            ├── GocPolyline
            ├── GocRectangle
            ╰── GocText

Implemented Interfaces

GocStyledItem implements GOStyledObject.

Description

The virtual base object for canvas items with style.

Functions

goc_styled_item_set_cairo_line ()

gboolean
goc_styled_item_set_cairo_line (GocStyledItem const *gsi,
                                cairo_t *cr);

Prepares the cairo context cr to draw a line according to the item style and canvas scale. The line width is scaled only if the scale-line-width property is set to TRUE. This function calls go_styled_object_set_cairo_line().

If the item drawing used goc_group_cairo_transform(), scale-line-width should be FALSE to avoid scaling twice, or go_styled_object_set_cairo_line() should be called directly instead.

Parameters

gsi

GocStyledItem

 

cr

cairo_t

 

Returns

TRUE if the line is not invisible


goc_styled_item_get_scale_line_width ()

gboolean
goc_styled_item_get_scale_line_width (GocStyledItem const *gsi);

This function returns TRUE if the line width needs to be scaled. It will always return FALSE if the line width is 0.

Parameters

gsi

GocStyledItem

 

Returns

whether the line width needs to be scaled.


goc_styled_item_set_scale_line_width ()

void
goc_styled_item_set_scale_line_width (GocStyledItem *gsi,
                                      gboolean scale_line_width);

Sets whether the line width needs to be scaled according to the current canvas resolution and the item transformation. It will be ignored if the line width is 0. Default value is TRUE.

Parameters

gsi

GocStyledItem

 

scale_line_width

boolean

 

Types and Values

GocStyledItem

typedef struct _GocStyledItem GocStyledItem;

struct GocStyledItemClass

struct GocStyledItemClass {
	/* virtual */
	void	  (*init_style)     	(GocStyledItem *item, GOStyle *style);
	void (*reserved1) (void);
	void (*reserved2) (void);
};

Members

init_style ()

style initialization handler.

 

reserved1 ()

reserved for future expansion

 

reserved2 ()

reserved for future expansion