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Goffice Reference Manual | ![]() |
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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); 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_rectangle (GogRenderer *rend, GogViewAllocation const *rect); void gog_renderer_stroke_serie (GogRenderer *renderer, GOPath const *path); void gog_renderer_stroke_shape (GogRenderer *renderer, GOPath const *path); void gog_renderer_request_update (GogRenderer *renderer); void gog_renderer_push_style (GogRenderer *rend, GogStyle 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_sharp_path (GogRenderer *rend, ArtVpath *path); void gog_renderer_draw_sharp_polygon (GogRenderer *rend, ArtVpath *path, gboolean narrow); void gog_renderer_draw_path (GogRenderer *rend, ArtVpath const *path); void gog_renderer_draw_polygon (GogRenderer *rend, ArtVpath const *path, gboolean narrow); void gog_renderer_draw_rectangle (GogRenderer *rend, GogViewAllocation const *rect); void gog_renderer_draw_bezier_path (GogRenderer *rend, ArtBpath const *path); 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);
GogRenderer* gog_renderer_new (GogGraph *graph);
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graph model |
Returns : |
a new GogRenderer which can render into a pixbuf, and sets graph
as its model.
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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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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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Returns : |
void gog_renderer_stroke_rectangle (GogRenderer *rend, GogViewAllocation const *rect);
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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_push_style (GogRenderer *rend, GogStyle 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_sharp_path (GogRenderer *rend, ArtVpath *path);
Draws path
using the outline elements of the current style,
trying to make line with sharp edge.
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GogRenderer |
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ArtVpath |
void gog_renderer_draw_sharp_polygon (GogRenderer *rend, ArtVpath *path, gboolean narrow);
Draws path
and fills it with the fill elements of the current style,
trying to draw line with sharp edge.
If narrow
is false it alos outlines it using the outline elements.
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GogRenderer |
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ArtVpath |
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if TRUE skip any outline the current style specifies. |
void gog_renderer_draw_path (GogRenderer *rend, ArtVpath const *path);
Draws path
using the outline elements of the current style.
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GogRenderer |
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ArtVpath |
void gog_renderer_draw_polygon (GogRenderer *rend, ArtVpath const *path, gboolean narrow);
Draws path
and fills it with the fill elements of the current style.
If narrow
is false it alos outlines it using the outline elements.
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GogRenderer |
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ArtVpath |
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if TRUE skip any outline the current style specifies. |
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_bezier_path (GogRenderer *rend, ArtBpath const *path);
Draws path
using the outline elements of the current style.
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GogRenderer |
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ArtBpath |
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 .
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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 .
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double gog_renderer_line_size (GogRenderer const *r, double width);
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Returns : |
double gog_renderer_pt2r_x (GogRenderer const *r, double d);
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Returns : |
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 : |
TRUE if export succeed.
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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 : |
TRUE if a redraw is necessary.
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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 NULL on error.
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cairo_surface_t* gog_renderer_get_cairo_surface (GogRenderer *renderer);
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Returns : |
"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. |