Re: gtkdatabox-0.8.0.0 released

[Laurent Perez <laurent perez unicaen fr>]

Hi Roland,

Many thanks for all this great work !

As far as I have tested, all work fine with a Slackware 12
(glib2-2.12.12 / gtk+2-2.10.13 / pango-1.16.4 / cairo-1.4.10)

I can't succeed in having logarithmic scaling and auto rescale (example
attached).
I find "gtk_databox_set_total_limits (box, top_left, bottom_right)"
function a little confusing. I would have prefere
"gtk_databox_set_total_limits (box, bottom_left, top_right)" or
"gtk_databox_set_total_limits (box, x_min_max, y_min_max)" but I think
it's just a matter of habit.

Regards ;


Laurent.

/* gcc linlog.c -o linlog `pkg-config --libs --cflags gtkdatabox` */

#include <math.h>
#include <stdio.h>
#include <gtk/gtk.h>
#include <gtkdatabox.h>
#include <gtkdatabox_lines.h>

#define POINTS 100000

gint main (gint argc, char *argv [])
{
   GtkWidget *win, *vbox, *databox, *txt, *table;
   GtkDataboxGraph *graph;
   GtkDataboxValue top_left, bottom_right;
   gfloat *X, *Y;
   GdkColor color;
   guint i;

   color.red = 0;
   color.green = 0;
   color.blue = 0;

   X = g_new0 (gfloat, POINTS);
   Y = g_new0 (gfloat, POINTS);

   for (i = 1 ; i < POINTS ; i ++)
   {
      X [i] = i;
      Y [i] = log10 (i);
   }

   gtk_init (&argc, &argv);

   win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   gtk_widget_set_size_request (win, 500, 500);
   vbox = gtk_vbox_new (FALSE, 5);
   gtk_container_add (GTK_CONTAINER (win), vbox);
   txt = gtk_label_new ("y = log10 (x)");
   gtk_box_pack_start (GTK_BOX (vbox), txt, FALSE, FALSE, 0);
   gtk_databox_create_box_with_scrollbars_and_rulers (&databox, &table, 1, 1, 1, 1);
   graph = gtk_databox_lines_new (POINTS, X, Y, &color, 1);
   gtk_databox_graph_add (GTK_DATABOX (databox), graph);
   /* gtk_databox_auto_rescale (GTK_DATABOX (databox), 0); */
   top_left.x = 1;
   bottom_right.x = 100000.;
   top_left.y = 5;
   bottom_right.y = 0;
   gtk_databox_set_total_limits (GTK_DATABOX (databox), top_left, bottom_right);
   gtk_databox_set_scale_type_x (GTK_DATABOX (databox), GTK_DATABOX_SCALE_LOG);
   gtk_box_pack_start (GTK_BOX (vbox), table, TRUE, TRUE, 0);
   gtk_widget_show_all (win);
   
   g_signal_connect (GTK_OBJECT (win), "destroy", G_CALLBACK (gtk_main_quit), NULL);

   gtk_main ();

   return 0;
}