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.

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.

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.

GocStyledItem

typedef struct _GocStyledItem GocStyledItem;

struct GocStyledItemClass

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

The “scale-line-width” property

  “scale-line-width”         gboolean

Whether to scale the line width when zooming.

Flags: Read / Write

Default value: TRUE

The “style” property

  “style”                    GOStyle *

A pointer to the GOStyle object.

Flags: Read / Write

The “style-changed” signal

void
user_function (GocStyledItem *gsi,
               GObject       *style,
               gpointer       user_data)

The ::style-changed signal is emitted when a new style has been set on a styled item.

Flags: Run Last