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            GogStyle;
enum        GogStyleFlag;
enum        GogFillStyle;
enum        GogImageType;
            GogStyleLine;
            GogStyleMark;
GogStyle*   gog_style_new                   (void);
GogStyle*   gog_style_dup                   (GogStyle const *style);
void        gog_style_assign                (GogStyle *dst,
                                             GogStyle const *src);
void        gog_style_apply_theme           (GogStyle *dst,
                                             GogStyle const *src);
void        gog_style_set_marker            (GogStyle *style,
                                             GOMarker *marker);
void        gog_style_set_font_desc         (GogStyle *style,
                                             PangoFontDescription *desc);
void        gog_style_set_font              (GogStyle *style,
                                             GOFont const *font);
void        gog_style_set_fill_brightness   (GogStyle *style,
                                             float brightness);
void        gog_style_set_fill_image_filename
                                            (GogStyle *style,
                                             char *filename);
void        gog_style_set_text_angle        (GogStyle *style,
                                             double angle);
gboolean    gog_style_is_different_size     (GogStyle const *a,
                                             GogStyle const *b);
gboolean    gog_style_is_marker_visible     (GogStyle const *style);
gboolean    gog_style_is_line_visible       (GogStyle const *style);
gboolean    gog_style_is_outline_visible    (GogStyle const *style);
void        gog_style_force_auto            (GogStyle *style);
void        gog_style_populate_editor       (GogStyle *style,
                                             GogEditor *editor,
                                             GogStyle *default_style,
                                             GOCmdContext *cc,
                                             GObject *object_with_style,
                                             gboolean watch_for_external_change);
gpointer    gog_style_get_editor            (GogStyle *style,
                                             GogStyle *default_style,
                                             GOCmdContext *cc,
                                             GObject *object_with_style);
typedef enum {
	GOG_STYLE_OUTLINE	= 1 << 0,
	GOG_STYLE_FILL		= 1 << 1,
	GOG_STYLE_LINE		= 1 << 2,
	GOG_STYLE_MARKER	= 1 << 3,
	GOG_STYLE_FONT		= 1 << 4,
	GOG_STYLE_TEXT_LAYOUT	= 1 << 5,
	GOG_STYLE_INTERPOLATION	= 1 << 6,
	GOG_STYLE_MARKER_NO_COLOR	= 1 << 7,
	GOG_STYLE_ALL		= 0x1F
} GogStyleFlag;
typedef enum {
	GOG_FILL_STYLE_NONE	= 0,
	GOG_FILL_STYLE_PATTERN	= 1,
	GOG_FILL_STYLE_GRADIENT	= 2,
	GOG_FILL_STYLE_IMAGE	= 3
} GogFillStyle;
typedef enum {
	GOG_IMAGE_STRETCHED,
	GOG_IMAGE_WALLPAPER,
	GOG_IMAGE_CENTERED
} GogImageType;
typedef struct {
	/* <0 == no outline,
	 * =0 == hairline : unscaled, minimum useful (can be bigger than visible) size.
	 * >0 in pts */
	float	 	 width;
	GOLineDashType 	 dash_type;
	gboolean	 auto_dash;
	GOColor	 	 color;
	gboolean 	 auto_color;
	unsigned 	 pattern; /* TODO border type from gnumeric */
} GogStyleLine;
typedef struct {
	GOMarker *mark;
	gboolean auto_shape;
	gboolean auto_outline_color;
	gboolean auto_fill_color;
} GogStyleMark;
void gog_style_apply_theme (GogStyle *dst, GogStyle const *src);
Merge the attributes from src onto the elements of dst that were not user
assigned (is_auto)
void gog_style_set_marker (GogStyle *style, GOMarker *marker);
Absorb a reference to marker and assign it to style.
| style: | GogStyle | 
| marker: | GOMarker | 
void gog_style_set_font_desc (GogStyle *style, PangoFontDescription *desc);
| style: | |
| desc: | 
void gog_style_set_fill_brightness (GogStyle *style, float brightness);
| style: | |
| brightness: | 
void        gog_style_set_fill_image_filename
                                            (GogStyle *style,
                                             char *filename);
absorb the string and eventually free it.
| style: | GogStyle | 
| filename: | 
void gog_style_set_text_angle (GogStyle *style, double angle);
Set text rotation angle in degrees. Valid values are in the range [-180.0° , 180.0°].
| style: | GogStyle | 
| angle: | text rotation in degrees | 
gboolean gog_style_is_different_size (GogStyle const *a, GogStyle const *b);
| a: | |
| b: | |
| Returns : | 
gboolean gog_style_is_marker_visible (GogStyle const *style);
| style: | |
| Returns : | 
gboolean gog_style_is_line_visible (GogStyle const *style);
| style: | |
| Returns : | 
gboolean gog_style_is_outline_visible (GogStyle const *style);
| style: | |
| Returns : | 
void gog_style_populate_editor (GogStyle *style, GogEditor *editor, GogStyle *default_style, GOCmdContext *cc, GObject *object_with_style, gboolean watch_for_external_change);
| style: | |
| editor: | |
| default_style: | |
| cc: | |
| object_with_style: | |
| watch_for_external_change: |