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Note that GogGraph has a functions for export/rendering, so you do not always need to use a GogRenderer directly.
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
);
Defines a rectangular clipping region. For efficient screen rendering, this function takes care to round the coordinates.
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_push_clip (GogRenderer *rend
,GOPath const *path
);
Defines the current clipping region.
void gog_renderer_draw_circle (GogRenderer *rend
,double x
,double y
,double r
);
void gog_renderer_draw_rectangle (GogRenderer *rend
,GogViewAllocation const *rect
);
A utility routine to build a closed rectangle vpath.
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.
rend |
||
text |
the string to draw |
|
pos |
||
anchor |
GtkAnchorType how to draw relative to |
|
use_markup |
wether to use pango markup |
void gog_renderer_draw_grip (GogRenderer *renderer
,double x
,double y
);
Draw a grip, used for moving/resizing of objects.
void gog_renderer_get_text_OBR (GogRenderer *rend
,char const *text
,gboolean use_markup
,GOGeometryOBR *obr
);
rend |
||
text |
the string to draw |
|
use_markup |
wether to use pango markup |
|
obr |
GOGeometryOBR to store the Object Bounding Rectangle of |
void gog_renderer_get_text_AABR (GogRenderer *rend
,char const *text
,gboolean use_markup
,GOGeometryAABR *aabr
);
rend |
||
text |
the string to draw |
|
use_markup |
wether to use pango markup |
|
aabr |
GOGeometryAABR to store the Axis Aligned Bounding Rectangle of |
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()
).
renderer |
||
format |
image format for export |
|
output |
a GsfOutput stream |
|
x_dpi |
x resolution of exported graph |
|
y_dpi |
y resolution of exported graph |
gboolean gog_renderer_update (GogRenderer *renderer
,double w
,double h
);
Requests a renderer update, only useful for pixbuf based renderer.
cairo_surface_t *
gog_renderer_get_cairo_surface (GogRenderer *renderer
);
“request-update”
signalvoid user_function (GogRenderer *gogrenderer, gpointer user_data)
gogrenderer |
the object which received the signal. |
|
user_data |
user data set when the signal handler was connected. |
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