void item_data_list_get_absolute_bbox (GList *item_data_list, Coords *p1, Coords *p2)
{
GList *iter;
Coords b1, b2;
if (item_data_list == NULL)
return;
item_data_get_absolute_bbox (item_data_list->data, p1, p2);
for (iter = item_data_list; iter; iter = iter->next) {
if (G_UNLIKELY (iter->data == NULL))
continue;
item_data_get_absolute_bbox (iter->data, &b1, &b2);
if (p1) {
p1->x = MIN (p1->x, b1.x);
p1->y = MIN (p1->y, b1.y);
}
if (p2) {
p2->x = MAX (p2->x, b2.x);
p2->y = MAX (p2->y, b2.y);
}
}
}
gint
node_store_count_items (NodeStore *store, NodeRect *rect)
{
GList *list;
SheetPos p1, p2;
ItemData *data;
gint n;
g_return_val_if_fail (store != NULL, 0);
g_return_val_if_fail (IS_NODE_STORE (store), 0);
if (rect == NULL)
return g_list_length (store->items);
for (list = store->items, n = 0; list; list = list->next) {
data = ITEM_DATA (list->data);
item_data_get_absolute_bbox (data, &p1, &p2);
if (p1.x <= rect->x1 && p1.y <= rect->y1 &&
p2.x >= rect->x0 && p2.y >= rect->y0) {
n++;
}
}
g_list_free_full (list, g_object_unref);
return n;
}
void
node_store_get_bounds (NodeStore *store, NodeRect *rect)
{
GList *list;
SheetPos p1, p2;
g_return_if_fail (store != NULL);
g_return_if_fail (IS_NODE_STORE (store));
g_return_if_fail (rect != NULL);
rect->x0 = G_MAXDOUBLE;
rect->y0 = G_MAXDOUBLE;
rect->x1 = -G_MAXDOUBLE;
rect->y1 = -G_MAXDOUBLE;
for (list = store->items; list; list = list->next) {
item_data_get_absolute_bbox (ITEM_DATA (list->data), &p1, &p2);
rect->x0 = MIN (rect->x0, p1.x);
rect->y0 = MIN (rect->y0, p1.y);
rect->x1 = MAX (rect->x1, p2.x);
rect->y1 = MAX (rect->y1, p2.y);
}
g_list_free_full (list, g_object_unref);
}
static void
textbox_flip (ItemData *data, gboolean horizontal, SheetPos *center)
{
double affine[6];
ArtPoint src, dst;
Textbox *textbox;
TextboxPriv *priv;
SheetPos b1, b2;
SheetPos textbox_center, delta;
g_return_if_fail (data != NULL);
g_return_if_fail (IS_TEXTBOX (data));
textbox = TEXTBOX (data);
if (center) {
item_data_get_absolute_bbox (ITEM_DATA (textbox), &b1, &b2);
textbox_center.x = b1.x + (b2.x - b1.x) / 2;
textbox_center.y = b1.y + (b2.y - b1.y) / 2;
}
priv = textbox->priv;
if (horizontal)
art_affine_scale (affine, -1, 1);
else
art_affine_scale (affine, 1, -1);
/*
* Let the views (canvas items) know about the rotation.
*/
g_signal_emit_by_name(G_OBJECT (textbox), "flipped", horizontal);
if (center) {
SheetPos textbox_pos;
item_data_get_pos (ITEM_DATA (textbox), &textbox_pos);
src.x = textbox_center.x - center->x;
src.y = textbox_center.y - center->y;
art_affine_point (&dst, &src, affine);
delta.x = -src.x + dst.x;
delta.y = -src.y + dst.y;
item_data_move (ITEM_DATA (textbox), &delta);
}
}
static void wire_rotate (ItemData *data, int angle, Coords *center_pos)
{
cairo_matrix_t affine;
double x, y;
Wire *wire;
WirePriv *priv;
Coords b1, b2;
Coords wire_center_before, wire_center_after, delta;
Coords delta_cp_before, delta_cp_after;
g_return_if_fail (data != NULL);
g_return_if_fail (IS_WIRE (data));
if (angle == 0)
return;
wire = WIRE (data);
item_data_get_absolute_bbox (ITEM_DATA (wire), &b1, &b2);
wire_center_before = coords_average (&b1, &b2);
priv = wire->priv;
if (priv->direction == WIRE_DIR_VERT) {
priv->direction = WIRE_DIR_HORIZ;
} else if (priv->direction == WIRE_DIR_HORIZ) {
priv->direction = WIRE_DIR_VERT;
}
cairo_matrix_init_rotate (&affine, (double)angle * M_PI / 180.0);
// Rotate the wire's end point.
x = priv->length.x;
y = priv->length.y;
cairo_matrix_transform_point (&affine, &x, &y);
if (fabs (x) < 1e-2)
x = 0.0;
if (fabs (y) < 1e-2)
y = 0.0;
priv->length.x = x;
priv->length.y = y;
if (center_pos) {
delta_cp_before = coords_sub (&wire_center_before, center_pos);
delta_cp_after = delta_cp_before;
cairo_matrix_transform_point (&affine, &delta_cp_after.x, &delta_cp_after.y);
}
// Update bounding box.
wire_update_bbox (wire);
item_data_get_absolute_bbox (ITEM_DATA (wire), &b1, &b2);
wire_center_after = coords_average (&b1, &b2);
delta = coords_sub (&wire_center_before, &wire_center_after);
if (center_pos) {
Coords diff = coords_sub (&delta_cp_after, &delta_cp_before);
coords_add (&delta, &diff);
}
item_data_move (ITEM_DATA (wire), &delta);
// item_data_snap (ITEM_DATA (wire), NULL); //FIXME XXX
// Let the views (canvas items) know about the rotation.
g_signal_emit_by_name (G_OBJECT (wire), "rotated", angle); // legacy
g_signal_emit_by_name (G_OBJECT (wire), "changed");
}
