diff options
Diffstat (limited to 'src/gtk-valuegraph.c')
| -rw-r--r-- | src/gtk-valuegraph.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/gtk-valuegraph.c b/src/gtk-valuegraph.c index b5d2bf1..555cec9 100644 --- a/src/gtk-valuegraph.c +++ b/src/gtk-valuegraph.c @@ -11,12 +11,14 @@ #include <gtk/gtk.h> #include <math.h> +#include <stdlib.h> #include "gtk-valuegraph.h" static GtkObjectClass *parent_class = NULL; static void gtk_value_graph_destroy(GtkObject *gtk_value_graph) { + free(GTK_VALUE_GRAPH(gtk_value_graph)->data); parent_class->destroy(gtk_value_graph); } @@ -161,8 +163,17 @@ static gint gtk_value_graph_draw(GtkWidget *graph, GdkEventExpose *event, gpoint cairo_move_to(cr, bw_left, height-bw_bottom-1-scale*(vg->data[0]-vg->ymin)); for ( i=1; i<vg->n; i++ ) { - cairo_line_to(cr, bw_left+((double)i/vg->xmax)*(width-bw_left-bw_right), height-bw_bottom-1-scale*(vg->data[i]-vg->ymin)); - + int p; + + p = i-1; + if ( p < 1 ) p = 1; + + if ( !isnan(vg->data[i]) && !isnan(vg->data[p]) ) { + cairo_line_to(cr, bw_left+((double)i/vg->xmax)*(width-bw_left-bw_right), height-bw_bottom-1-scale*(vg->data[i]-vg->ymin)); + } else { + cairo_move_to(cr, bw_left+((double)i/vg->xmax)*(width-bw_left-bw_right), height-bw_bottom-1-scale*(vg->data[i]-vg->ymin)); + } + } cairo_set_line_width(cr, 0.5); cairo_set_source_rgb(cr, 0.0, 0.0, 1.0); |