static void
crop_result(GwyDataField *result,
GwyDataField *dfield1, GwyDataField *dfield2,
GwyOrientation orientation,
gint px1, gint py1,
gint px2, gint py2)
{
if (orientation == GWY_ORIENTATION_HORIZONTAL) {
gint top = MAX(MAX(py1, py2), 0);
gint bot = MIN(MIN(dfield1->yres + py1, dfield2->yres + py2),
result->yres);
gdouble yreal = (bot - top)*gwy_data_field_get_ymeasure(result);
g_return_if_fail(bot > top);
gwy_data_field_resize(result, 0, top, result->xres, bot);
gwy_data_field_set_yreal(result, yreal);
}
else {
gint left = MAX(MAX(px1, px2), 0);
gint right = MIN(MIN(dfield1->xres + px1, dfield2->xres + px2),
result->xres);
gdouble xreal = (right - left)*gwy_data_field_get_xmeasure(result);
g_return_if_fail(right > left);
gwy_data_field_resize(result, left, 0, right, result->yres);
gwy_data_field_set_xreal(result, xreal);
}
}
static void
apply(GwyUnitoolState *state)
{
static const gchar *field_names[] = { "/0/data", "/0/mask", "/0/show" };
GtkWidget *data_window;
GwyDataView *data_view;
GwyContainer *data;
GwyDataField *dfield;
gint ximin, yimin, ximax, yimax;
gdouble sel[4];
gsize i;
if (!gwy_vector_layer_get_selection(state->layer, sel))
return;
data_view = GWY_DATA_VIEW(GWY_DATA_VIEW_LAYER(state->layer)->parent);
data = gwy_data_view_get_data(data_view);
data = GWY_CONTAINER(gwy_serializable_duplicate(G_OBJECT(data)));
gwy_app_clean_up_data(data);
for (i = 0; i < G_N_ELEMENTS(field_names); i++) {
if (!gwy_container_gis_object_by_name(data, field_names[i],
(GObject**)&dfield))
continue;
ximin = gwy_data_field_rtoj(dfield, sel[0]);
yimin = gwy_data_field_rtoi(dfield, sel[1]);
ximax = gwy_data_field_rtoj(dfield, sel[2]) + 1;
yimax = gwy_data_field_rtoi(dfield, sel[3]) + 1;
gwy_data_field_set_xreal(dfield,
(ximax - ximin)
*gwy_data_field_get_xreal(dfield)
/gwy_data_field_get_xres(dfield));
gwy_data_field_set_yreal(dfield,
(yimax - yimin)
*gwy_data_field_get_yreal(dfield)
/gwy_data_field_get_yres(dfield));
gwy_data_field_resize(dfield, ximin, yimin, ximax, yimax);
}
data_window = gwy_app_data_window_create(data);
gwy_app_data_window_set_untitled(GWY_DATA_WINDOW(data_window), NULL);
gwy_vector_layer_unselect(state->layer);
gwy_data_view_update(data_view);
gwy_debug("%d %d",
gwy_data_field_get_xres(dfield), gwy_data_field_get_yres(dfield));
}