|  |  |  | Goffice Reference Manual |  | 
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| Top | Description | Object Hierarchy | Properties | Signals | ||||
GogRenderer; GogRenderer * gog_renderer_new (GogGraph *graph); void gog_renderer_draw_selection_rectangle (GogRenderer *renderer,GogViewAllocation const *rectangle); void gog_renderer_draw_shape (GogRenderer *renderer,GOPath const *path); void gog_renderer_fill_serie (GogRenderer *renderer,GOPath const *path,GOPath const *close_path); void gog_renderer_fill_shape (GogRenderer *renderer,GOPath const *path); void gog_renderer_fill_circle (GogRenderer *rend,double x,double y,double r); void gog_renderer_fill_rectangle (GogRenderer *rend,GogViewAllocation const *rect); double gog_renderer_get_hairline_width_pts (GogRenderer const *rend); void gog_renderer_push_clip_rectangle (GogRenderer *rend,double x,double y,double w,double h); gboolean gog_renderer_render_to_cairo (GogRenderer *renderer,cairo_t *cairo,double width,double height); void gog_renderer_stroke_serie (GogRenderer *renderer,GOPath const *path); void gog_renderer_stroke_shape (GogRenderer *renderer,GOPath const *path); void gog_renderer_stroke_circle (GogRenderer *rend,double x,double y,double r); void gog_renderer_stroke_rectangle (GogRenderer *rend,GogViewAllocation const *rect); void gog_renderer_request_update (GogRenderer *renderer); void gog_renderer_push_style (GogRenderer *rend,GOStyle const *style); void gog_renderer_pop_style (GogRenderer *rend); void gog_renderer_push_clip (GogRenderer *rend,GOPath const *path); void gog_renderer_pop_clip (GogRenderer *rend); void gog_renderer_draw_circle (GogRenderer *rend,double x,double y,double r); void gog_renderer_draw_rectangle (GogRenderer *rend,GogViewAllocation const *rect); void gog_renderer_draw_text (GogRenderer *rend,char const *text,GogViewAllocation const *pos,GtkAnchorType anchor,gboolean use_markup); void gog_renderer_draw_marker (GogRenderer *rend,double x,double y); void gog_renderer_draw_grip (GogRenderer *renderer,double x,double y); #define gog_renderer_in_grip (x, y, grip_x, grip_y) void gog_renderer_get_text_OBR (GogRenderer *rend,char const *text,gboolean use_markup,GOGeometryOBR *obr); void gog_renderer_get_text_AABR (GogRenderer *rend,char const *text,gboolean use_markup,GOGeometryAABR *aabr); double gog_renderer_line_size (GogRenderer const *r,double width); double gog_renderer_pt2r_x (GogRenderer const *r,double d); double gog_renderer_pt2r_y (GogRenderer const *r,double d); double gog_renderer_pt2r (GogRenderer const *r,double d); gboolean gog_renderer_export_image (GogRenderer *renderer,GOImageFormat format,GsfOutput *output,double x_dpi,double y_dpi); gboolean gog_renderer_update (GogRenderer *renderer,double w,double h); GdkPixbuf * gog_renderer_get_pixbuf (GogRenderer *renderer); cairo_surface_t * gog_renderer_get_cairo_surface (GogRenderer *renderer);
Note that GogGraph has a functions for export/rendering, so you do not always need to use a GogRenderer directly.
GogRenderer *       gog_renderer_new                    (GogGraph *graph);
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 | graph model | 
| Returns : | a new GogRenderer which can render into a pixbuf, and sets graphas its model. | 
void gog_renderer_draw_selection_rectangle (GogRenderer *renderer,GogViewAllocation const *rectangle);
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void gog_renderer_draw_shape (GogRenderer *renderer,GOPath const *path);
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void gog_renderer_fill_serie (GogRenderer *renderer,GOPath const *path,GOPath const *close_path);
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void gog_renderer_fill_shape (GogRenderer *renderer,GOPath const *path);
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void gog_renderer_fill_circle (GogRenderer *rend,double x,double y,double r);
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void gog_renderer_fill_rectangle (GogRenderer *rend,GogViewAllocation const *rect);
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double              gog_renderer_get_hairline_width_pts (GogRenderer const *rend);
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 | a GogRenderer | 
| Returns : | the hairline width in pts. | 
void gog_renderer_push_clip_rectangle (GogRenderer *rend,double x,double y,double w,double h);
Defines a rectangular clipping region. For efficient screen rendering, this function takes care to round the coordinates.
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 | GogRenderer | 
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 | left coordinate | 
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 | top coordinate | 
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 | width of clipping rectangle | 
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 | height of clipping rectangle | 
gboolean gog_renderer_render_to_cairo (GogRenderer *renderer,cairo_t *cairo,double width,double height);
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void gog_renderer_stroke_serie (GogRenderer *renderer,GOPath const *path);
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void gog_renderer_stroke_shape (GogRenderer *renderer,GOPath const *path);
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void gog_renderer_stroke_circle (GogRenderer *rend,double x,double y,double r);
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void gog_renderer_stroke_rectangle (GogRenderer *rend,GogViewAllocation const *rect);
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void gog_renderer_push_style (GogRenderer *rend,GOStyle const *style);
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void gog_renderer_push_clip (GogRenderer *rend,GOPath const *path);
Defines the current clipping region.
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 | GogRenderer | 
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 | a GOPath | 
void                gog_renderer_pop_clip               (GogRenderer *rend);
End the current clipping.
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 | GogRenderer | 
void gog_renderer_draw_circle (GogRenderer *rend,double x,double y,double r);
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void gog_renderer_draw_rectangle (GogRenderer *rend,GogViewAllocation const *rect);
A utility routine to build a closed rectangle vpath.
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 | a GogRenderer | 
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 | position and extent of rectangle | 
void gog_renderer_draw_text (GogRenderer *rend,char const *text,GogViewAllocation const *pos,GtkAnchorType anchor,gboolean use_markup);
Have rend draw text in the at pos.{x,y} anchored by the anchor corner.
If pos.w or pos.h are >= 0 then clip the results to less than that size.
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 | GogRenderer | 
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 | the string to draw | 
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 | GogViewAllocation | 
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 | GtkAnchorType how to draw relative to pos | 
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 | wether to use pango markup | 
void gog_renderer_draw_marker (GogRenderer *rend,double x,double y);
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 | GogRenderer | 
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 | X-coordinate | 
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 | Y-coordinate | 
void gog_renderer_draw_grip (GogRenderer *renderer,double x,double y);
Draw a grip, used for moving/resizing of objects.
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 | GogRenderer | 
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 | x position of grip | 
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 | y position of grip | 
void gog_renderer_get_text_OBR (GogRenderer *rend,char const *text,gboolean use_markup,GOGeometryOBR *obr);
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 | GogRenderer | 
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 | the string to draw | 
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 | wether to use pango markup | 
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 | GOGeometryOBR to store the Object Bounding Rectangle of text. | 
void gog_renderer_get_text_AABR (GogRenderer *rend,char const *text,gboolean use_markup,GOGeometryAABR *aabr);
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 | GogRenderer | 
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 | the string to draw | 
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 | wether to use pango markup | 
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 | GOGeometryAABR to store the Axis Aligned Bounding Rectangle of text. | 
double gog_renderer_line_size (GogRenderer const *r,double width);
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double gog_renderer_pt2r_x (GogRenderer const *r,double d);
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double gog_renderer_pt2r_y (GogRenderer const *r,double d);
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gboolean gog_renderer_export_image (GogRenderer *renderer,GOImageFormat format,GsfOutput *output,double x_dpi,double y_dpi);
Exports an image of graph in given format, writing results in a GsfOutput stream.
If export format type is a bitmap one, it computes image size with x_dpi, y_dpi and
graph size (see gog_graph_get_size()).
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 | a GogRenderer | 
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 | image format for export | 
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 | a GsfOutput stream | 
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 | x resolution of exported graph | 
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 | y resolution of exported graph | 
| Returns : | TRUEif export succeed. | 
gboolean gog_renderer_update (GogRenderer *renderer,double w,double h);
Requests a renderer update, only useful for pixbuf based renderer.
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 | a GogRenderer | 
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 | requested width | 
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 | requested height | 
| Returns : | TRUEif a redraw is necessary. | 
GdkPixbuf *         gog_renderer_get_pixbuf             (GogRenderer *renderer);
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 | GogRenderer | 
| Returns : | current pixbuf buffer from a renderer that can render into a pixbuf.
	or NULLon error. | 
cairo_surface_t *   gog_renderer_get_cairo_surface      (GogRenderer *renderer);
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"request-update" signalvoid user_function (GogRenderer *gogrenderer, gpointer user_data) : Run Last
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 | the object which received the signal. | 
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 | user data set when the signal handler was connected. |