Le mardi 23 mai 2006 à 14:08 +0200, Emmanuel Pacaud a écrit : > Le mardi 23 mai 2006 à 11:21 +0200, Jean Bréfort a écrit : > > Le mardi 23 mai 2006 à 11:04 +0200, Emmanuel Pacaud a écrit : > > > Hi, > > > > > > Here's some words on what I'm working on currently. > > > > > > Last weeks, I've tried to finalize the cairo SVG backend for its > > > inclusion as supported backend. So I hope next stable cairo will have > > > good PDF, PS and SVG backends. > > > > > > It will then be possible to ditch our current rendering engine and > > > replace it by a simplified one, based on cairo. > > > > > > So my plan is to implement this simplified engine, and validate it by > > > using it in two plot plugins, via a new GogView::cairo_render. > > > > > > Here's the current in-progress API: > > > > > > typedef struct _GOPathPoint GOPathPoint; > > > > > > GOPath *go_path_new (void); > > > GOPath *go_path_new_with_size (int size); > > > void go_path_free (GOPath *path); > > > > > > void go_path_set_sharp (GOPath *path, gboolean sharp); > > > > > > void go_path_move_to (GOPath *path, double x, double y); > > > void go_path_line_to (GOPath *path, double x, double y); > > > void go_path_curve_to (GOPath *path, double x0, double y0, > > > double x1, double y1, > > > double x2, double y2); > > > void go_path_rectangle (GOPath *path, double x, double y, > > > double width, double height); > > > void go_path_ring_wedge (GOPath *path, double cx, double xy, > > > double rx_out, double ry_out, > > > double rx_in, double ry_in, > > > double th0, double th1); > > > void go_path_arc (GOPath *path, double cx, double cy, > > > double rx, double ry, > > > double th0, double th1); > > > void go_path_pie_wedge (GOPath *path, double cx, double cy, > > > double rx, double ry, > > > double th0, double th1); > > > void go_path_marker (GOPath *path); > > > void go_path_close (GOPath *path); > > > > > > typedef struct _GOCairo GOCairo; > > > > > > GOCairo *go_cairo_new (void); > > > void go_cairo_free (GOCairo *gcairo); > > > > > > void go_cairo_push_style (GOCairo *gcairo, GogStyle const *style); > > > void go_cairo_pop_style (GOCairo *gcairo); > > > > > > void go_cairo_push_clip (GOCairo *gcairo, GOPath const *path); > > > void go_cairo_pop_clip (GOCairo *gcairo); > > > > > > void go_cairo_stroke (GOCairo *gcairo, GOPath const *path); > > > void go_cairo_fill (GOCairo *gcairo, GOPath const *path); > > > void go_cairo_draw_shape (GOCairo *gcairo, GOPath const *path); > > > void go_cairo_draw_markers (GOCairo *gcairo, GOPath const *path); > > > void go_cairo_draw_text (GOCairo *gcairo, double x, double y, > > > char > > > const *text, GtkAnchorType anchor); > > > > > > void go_cairo_get_text_OBR (GOCairo *gcairo, char const *text, > > > GOGeometryOBR *obr); > > > void go_cairo_get_text_AABR (GOCairo *gcairo, char const *text, > > > GOGeometryAABR *aabr); > > > > > > double go_cairo_line_size (GOCairo const *gcairo, double width); > > > double go_cairo_pt_2r_x (GOCairo const *gcairo, double d); > > > double go_cairo_pt_2r_y (GOCairo const *gcairo, double d); > > > double go_cairo_pt_2r (GOCairo const *gcairo, double d); > > > > > > void go_cairo_render (GOCairo *gcairo, cairo_surface_t *surface); > > > > All that might be included in the GOImage code I'm currently working on, > > IMHO. I hope I can have something operational as soon as tomorrow ;-) > > All what ? All of what's above ?
Why not? > > > The final step would be to port all existing plot plugins. I think I'll > > > move pixbuf caching to gog_control_foo_canvas, and image_export and > > > get_pixbuf to GogGraphView. > > > > > > Regarding printing, since there's no gnome-print backend for cairo, I > > > guess we can just render graphs as raster image. > > > > Please, don't do that! It would be a serious regression (unless you use > > high resolution. Let's use the gnome-print renderer as long as we use > > gnome-print (hopefully not too long). > > We could use a high resolution. My concern is if we keep a part of > GogRenderer, for its gnome-print support, we'll have either a lot of > duplicated code in plot plugins, or a mess of #ifdefs... May be it is just too early to make that change. _______________________________________________ gnumeric-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gnumeric-list
