static void
zoom_in_changed(EntropyControls *controls, GtkToggleButton *check)
{
GwyGraphModel *gmodel = gwy_graph_get_model(GWY_GRAPH(controls->graph));
GwyGraphCurveModel *gcmodel;
const gdouble *xdata, *ydata;
gdouble S;
guint ndata, i;
g_object_set(gmodel,
"x-min-set", FALSE,
"x-max-set", FALSE,
"y-min-set", FALSE,
"y-max-set", FALSE,
NULL);
if (!(controls->args->zoom_in = gtk_toggle_button_get_active(check))
|| (gwy_graph_model_get_n_curves(gmodel) < 2)) {
return;
}
gcmodel = gwy_graph_model_get_curve(gmodel, 1);
ydata = gwy_graph_curve_model_get_ydata(gcmodel);
S = ydata[0];
gcmodel = gwy_graph_model_get_curve(gmodel, 0);
ndata = gwy_graph_curve_model_get_ndata(gcmodel);
if (ndata < 5)
return;
xdata = gwy_graph_curve_model_get_xdata(gcmodel);
ydata = gwy_graph_curve_model_get_ydata(gcmodel);
for (i = 1; i+1 < ndata; i++) {
if (ydata[i] > S - G_LN2) {
g_object_set(gmodel,
"x-min", xdata[i-1],
"x-min-set", TRUE,
"y-min", ydata[i-1],
"y-min-set", TRUE,
NULL);
break;
}
}
for (i = ndata-2; i; i--) {
if (ydata[i] < S + G_LN2) {
g_object_set(gmodel,
"x-max", xdata[i+1],
"x-max-set", TRUE,
"y-max", ydata[i+1],
"y-max-set", TRUE,
NULL);
break;
}
}
}
static void
filter(GwyGraph *graph)
{
GwyContainer *data;
GwyGraphCurveModel *cmodel, *cmodelnew;
GwyGraphModel *model;
const gdouble *xdata, *ydata;
gdouble *newydata;
gint i, ncurves, ndata;
GQuark quark;
gwy_app_data_browser_get_current(GWY_APP_CONTAINER, &data,
GWY_APP_GRAPH_MODEL_KEY, &quark,
0);
gwy_app_undo_qcheckpointv(data, 1, &quark);
model = gwy_graph_get_model(graph);
ncurves = gwy_graph_model_get_n_curves(model);
for (i = 0; i < ncurves; i++) {
cmodel = gwy_graph_model_get_curve(model, i);
cmodelnew = gwy_graph_curve_model_new_alike(cmodel);
xdata = gwy_graph_curve_model_get_xdata(cmodel);
ydata = gwy_graph_curve_model_get_ydata(cmodel);
ndata = gwy_graph_curve_model_get_ndata(cmodel);
newydata = g_new(gdouble, ndata);
filter_do(ydata, newydata, ndata);
gwy_graph_curve_model_set_data(cmodelnew, xdata,
newydata, ndata);
g_free(newydata);
gwy_graph_model_remove_curve(gwy_graph_get_model(graph), i);
gwy_graph_model_add_curve(model, cmodelnew);
g_object_unref(cmodelnew);
}
}
static void
render_data(GtkTreeViewColumn *column,
GtkCellRenderer *renderer,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
GwyGraphData *graph_data = GWY_GRAPH_DATA(data);
const GwyGraphDataCurve *curve;
const gdouble *d;
gchar buffer[32];
gint id, row;
id = GPOINTER_TO_INT(g_object_get_qdata(G_OBJECT(column), quark_id));
/* Be fault-tolerant */
if (!graph_data->graph_model || id >= graph_data->curves->len)
return;
curve = &g_array_index(graph_data->curves, GwyGraphDataCurve, id);
gtk_tree_model_get(model, iter, 0, &row, -1);
if (row >= gwy_graph_curve_model_get_ndata(curve->gcmodel)) {
g_object_set(renderer, "text", "", NULL);
return;
}
if (g_object_get_qdata(G_OBJECT(renderer), quark_id))
d = gwy_graph_curve_model_get_ydata(curve->gcmodel);
else
d = gwy_graph_curve_model_get_xdata(curve->gcmodel);
/* TODO: improve formatting using some value format (may be hard to do
* for all value range) */
g_snprintf(buffer, sizeof(buffer), "%g", d[row]);
g_object_set(renderer, "text", buffer, NULL);
}
