/**
* \brief snaps to the grid, updates the model if snapping was necessary
*
* \attention this will cause a loop cycle of "changed" signals
* until no more snapping is necessary
*
* @param item_data
* @param grid
*/
void item_data_snap (ItemData *item_data, Grid *grid)
{
gboolean handler_connected;
g_return_if_fail (item_data);
g_return_if_fail (IS_ITEM_DATA (item_data));
g_return_if_fail (grid);
g_return_if_fail (IS_GRID (grid));
if (snap_to_grid (grid, &(item_data->priv->translate.x0), &(item_data->priv->translate.y0))) {
#if 1 // TODO FIXME XXX rename this to "snapped" instead of moved
handler_connected =
g_signal_handler_is_connected (G_OBJECT (item_data), item_data->moved_handler_id);
if (handler_connected) {
g_signal_emit_by_name (G_OBJECT (item_data),
"moved"); // FIXME replace this by a "snapped" signal
}
#endif
handler_connected =
g_signal_handler_is_connected (G_OBJECT (item_data), item_data->changed_handler_id);
if (handler_connected) {
g_signal_emit_by_name (G_OBJECT (item_data), "changed");
}
}
}
/* This function defines the drawing sheet on which schematic will be drawn
* @param grid the grid (not a GtkGrid but a Grid struct)
*/
GtkWidget *
sheet_new (Grid *grid)
{
g_return_val_if_fail (grid, NULL);
g_return_val_if_fail (IS_GRID (grid), NULL);
GooCanvas *sheet_canvas;
GooCanvasGroup *sheet_group;
GooCanvasPoints *points;
Sheet *sheet;
GtkWidget *sheet_widget;
GooCanvasItem *root;
gdouble height=-1., width=-1.;
g_object_get (grid,
"height", &height,
"width", &width,
NULL);
g_printf ("%s xxx %lf x %lf\n", __FUNCTION__, height, width);
// Creation of the Canvas
sheet = SHEET (g_object_new (TYPE_SHEET, NULL));
sheet_canvas = GOO_CANVAS (sheet);
g_object_set (G_OBJECT (sheet_canvas),
"bounds-from-origin", FALSE,
"bounds-padding", 4.0,
"background-color-rgb", 0xFFFFFF,
NULL);
root = goo_canvas_get_root_item (sheet_canvas);
sheet_group = GOO_CANVAS_GROUP (goo_canvas_group_new (
root,
NULL));
sheet_widget = GTK_WIDGET (sheet);
goo_canvas_set_bounds (GOO_CANVAS (sheet_canvas),
0., 0.,
width + 20., height + 20.);
// Define vicinity around GooCanvasItem
//sheet_canvas->close_enough = 6.0;
sheet->priv->width = width;
sheet->priv->height = height;
// Create the dot grid.
sheet->grid = grid;
sheet->grid_item = grid_item_new (GOO_CANVAS_ITEM (sheet_group), sheet->grid);
// Everything outside the sheet should be gray.
// top //
goo_canvas_rect_new (GOO_CANVAS_ITEM (sheet_group),
0.0,
0.0,
width + 20.0,
20.0,
"fill_color", "gray",
"line-width", 0.0,
NULL);
goo_canvas_rect_new (GOO_CANVAS_ITEM (sheet_group),
0.0,
height,
width + 20.0,
height + 20.0,
"fill_color", "gray",
"line-width", 0.0,
NULL);
// right //
goo_canvas_rect_new (GOO_CANVAS_ITEM (sheet_group),
0.0,
0.0,
20.0,
height + 20.0,
"fill_color", "gray",
"line-width", 0.0,
NULL);
goo_canvas_rect_new (GOO_CANVAS_ITEM (sheet_group),
width,
0.0,
width + 20.0,
height + 20.0,
"fill_color", "gray",
"line-width", 0.0,
NULL);
// Draw a thin black border around the sheet.
points = goo_canvas_points_new (5);
points->coords[0] = 20.0;
points->coords[1] = 20.0;
points->coords[2] = width;
points->coords[3] = 20.0;
points->coords[4] = width;
points->coords[5] = height;
points->coords[6] = 20.0;
points->coords[7] = height;
points->coords[8] = 20.0;
points->coords[9] = 20.0;
goo_canvas_polyline_new (GOO_CANVAS_ITEM (sheet_group),
FALSE, 0,
"line-width", 1.0,
"points", points,
NULL);
goo_canvas_points_unref (points);
// Finally, create the object group that holds all objects.
sheet->object_group = GOO_CANVAS_GROUP (goo_canvas_group_new (
root,
"x", 0.0,
"y", 0.0,
NULL));
NG_DEBUG ("root group %p", sheet->object_group);
sheet->priv->selected_group = GOO_CANVAS_GROUP (goo_canvas_group_new (
GOO_CANVAS_ITEM (sheet->object_group),
"x", 0.0,
"y", 0.0,
NULL));
NG_DEBUG ("selected group %p", sheet->priv->selected_group);
sheet->priv->floating_group = GOO_CANVAS_GROUP (goo_canvas_group_new (
GOO_CANVAS_ITEM (sheet->object_group),
"x", 0.0,
"y", 0.0,
NULL));
NG_DEBUG ("floating group %p", sheet->priv->floating_group);
// Hash table that maps coordinates to a specific dot.
sheet->priv->node_dots = g_hash_table_new_full (dot_hash, dot_equal, g_free, NULL);
//this requires object_group to be setup properly
sheet->priv->rubberband_info = rubberband_info_new (sheet);
sheet->priv->create_wire_info = create_wire_info_new (sheet);
return sheet_widget;
}
