Re: Error inserting a graph widget in a custom glade widget

[Emmanuel Pacaud <emmanuel pacaud univ-poitiers fr>]

Hi,

Le lundi 31 mars 2008 à 10:31 +0200, aalvarez igalia com a écrit :
> I have subscribed to this list because I'm very interested in libgoffice,
> because I have to paint some charts in an application that I have to
> develop.

It's the right list for this kind of discussion.

> I have created a xml structure with glade, where i let a custom widget
> where to paint charts with libgoffice. The problem is that the charts are
> randomly painted bad.

Very strange, indeed.

Could you please try to post a basic application that shows the issue.
It will help us to replicate it.

Thanks.

        Emmanuel.

> The code of the function that creates the custom widget with a pie chart
> is here:
>
> GtkWidget* create_chart (MyTime* self, const char* str1, const char* str2,
> gint int1, gint int2) {
>       GtkWidget *widget;
>         GogChart *chart;
>         GogGraph *graph;
>         GogLabel *label;
>         GogPlot *pie;
>         GogSeries *series;
>         GogStyle *style;
>         GOData *data;
>         GError *error;
>         PangoFontDescription *desc;
>         char const *title = "Some statistics";
>         char const * const legends[] = {"first", "second", "third",
> "fourth"};
>         double values[] = {10., 20., 30., 40.};
>
>         // Initialize libgoffice
>         libgoffice_init ();
>         // Initialize plugins manager
>         go_plugins_init (NULL, NULL, NULL, NULL, TRUE,
> GO_PLUGIN_LOADER_MODULE_TYPE);
>
>         // Create a graph widget
>         widget = go_graph_widget_new (NULL);
>
>         // Get the embedded graph
>         graph = go_graph_widget_get_graph (GO_GRAPH_WIDGET (widget));
>         // Add a title
>         label = (GogLabel *) g_object_new (GOG_LABEL_TYPE, NULL);
>         data = go_data_scalar_str_new (title, FALSE);
>         gog_dataset_set_dim (GOG_DATASET (label), 0, data, NULL);
>         gog_object_add_by_name (GOG_OBJECT (graph), "Title", GOG_OBJECT
> (label));
>         // Change the title font
>         style = gog_styled_object_get_style (GOG_STYLED_OBJECT (label));
>         desc = pango_font_description_from_string ("Sans bold 16");
>         gog_style_set_font_desc (style, desc);
>         // Get the chart created by the widget initialization
>         chart = go_graph_widget_get_chart (GO_GRAPH_WIDGET (widget));
>         // Create a pie plot and add it to the chart
>         pie = (GogPlot *) gog_plot_new_by_name ("GogPiePlot");
>         gog_object_add_by_name (GOG_OBJECT (chart), "Plot", GOG_OBJECT
> (pie));
>         // Create a series for the plot and populate it with some simple data
>         series = gog_plot_new_series (pie);
>         data = go_data_vector_str_new (legends, 4, NULL);
>         gog_series_set_dim (series, 0, data, &error);
>         data = go_data_vector_val_new (values, 4, NULL);
>         gog_series_set_dim (series, 1, data, &error);
>         // Add a legend to the chart
>         gog_object_add_by_name (GOG_OBJECT (chart), "Legend", NULL);
>
>
>         gtk_widget_show (GTK_WIDGET (widget));
>
>         return widget;
> }
>
> I attach too an image of the "strange" behaviour.
>
> Thanks in advance.
>
>
> --
> Antonio Álvarez Feijoo
> mailto:aalvarez igalia com
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