Re: how to set line colour in libgoffice charts

[jcupitt gmail com]

Ooop, my mistake, sorry. It's still not working in my app, though the
same code works in the test program. I'll keep digging. Thank you for
the quick reply.

John

2009/10/27 Jean Bréfort <jean brefort normalesup org>:
> You need to use RGBA_RED instead of RGB_RED. Note that these macros are
> replaced by GO_COLOR_RED in most recent versions.
>
> Regards,
> Jean
>
> Le mardi 27 octobre 2009 à 11:53 +0000, jcupitt gmail com a écrit :
> > Hello everyone,
> >
> > I've just updated from 0.7.4 to 0.7.8 (the version that's packaged
> > with the current Ubuntu as v0.8) and my code can no longer set line
> > colours.
> >
> > I made a tiny test program:
> >
> > ----------------
> > /* Compile with:
> >
> >        gcc -g -Wall chart.c `pkg-config libgoffice-0.8 --cflags --libs`
> >
> >  */
> >
> > #include <gtk/gtk.h>
> >
> > #include <goffice/goffice.h>
> >
> > #include <goffice/app/go-plugin.h>
> > #include <goffice/app/go-plugin-loader-module.h>
> >
> > #include <goffice/data/go-data-simple.h>
> >
> > #include <goffice/graph/gog-data-set.h>
> > #include <goffice/graph/gog-label.h>
> > #include <goffice/graph/gog-object.h>
> > #include <goffice/graph/gog-plot.h>
> > #include <goffice/graph/gog-series.h>
> >
> > #include <goffice/gtk/go-graph-widget.h>
> >
> > #include <goffice/utils/go-color.h>
> >
> > static double xes[] = { 1.0, 2.0, 3.0 };
> > static double yes[] = { 1.0, 12.0, 5.0 };
> >
> > int
> > main (int argc, char **argv)
> > {
> >   GtkWidget *window;
> >
> >   GtkWidget *graph;
> >   GogChart *chart;
> >   GogPlot *plot;
> >   GogSeries *series;
> >   GOData *data;
> >   GError *error;
> >   GOStyle *style;
> >
> >   gtk_init (&argc, &argv);
> >
> >   libgoffice_init ();
> >   go_plugins_init (NULL, NULL, NULL, NULL, TRUE,
> >                    GO_TYPE_PLUGIN_LOADER_MODULE);
> >
> >   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
> >
> >   graph = go_graph_widget_new (NULL);
> >   gtk_container_add (GTK_CONTAINER (window), graph);
> >
> >   chart = go_graph_widget_get_chart (GO_GRAPH_WIDGET (graph));
> >
> >   plot = gog_plot_new_by_name ("GogXYPlot");
> >   gog_object_add_by_name (GOG_OBJECT (chart), "Plot", GOG_OBJECT (plot));
> >
> >   series = gog_plot_new_series (plot);
> >   data = go_data_vector_val_new (xes, 3, NULL);
> >   gog_series_set_dim (series, 0, data, &error);
> >   data = go_data_vector_val_new (yes, 3, NULL);
> >   gog_series_set_dim (series, 1, data, &error);
> >
> >   style = go_styled_object_get_style (GO_STYLED_OBJECT (series));
> >   style->line.color = RGB_RED;
> >   style->line.auto_color = FALSE;
> >   gog_object_request_update (GOG_OBJECT (series));
> >
> >   // tried this too
> >   // go_styled_object_style_changed (GO_STYLED_OBJECT (series));
> >
> >   gtk_widget_show_all (window);
> >
> >   gtk_main ();
> >
> >   return 0;
> > }
> > --------------------
> >
> > What's the recommended way to set a line colour in 0.7.8?
> >
> > John
> > _______________________________________________
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