static GooCanvasAnchorType
part_item_get_anchor_from_part (Part *part)
{
int anchor_h, anchor_v;
int angle;
IDFlip flip;
flip = part_get_flip (part);
angle = part_get_rotation (part);
switch (angle) {
case 0:
anchor_h = ANCHOR_SOUTH;
anchor_v = ANCHOR_WEST;
break;
case 90:
anchor_h = ANCHOR_NORTH;
anchor_v = ANCHOR_WEST;
// Invert Rotation
if (flip & ID_FLIP_HORIZ)
flip = ID_FLIP_VERT;
else if (flip & ID_FLIP_VERT)
flip = ID_FLIP_HORIZ;
break;
}
if (flip & ID_FLIP_HORIZ) {
anchor_v = ANCHOR_EAST;
}
if (flip & ID_FLIP_VERT) {
anchor_h = ANCHOR_NORTH;
}
if ((anchor_v == ANCHOR_EAST) && (anchor_h == ANCHOR_NORTH))
return GOO_CANVAS_ANCHOR_NORTH_EAST;
if ((anchor_v == ANCHOR_WEST) && (anchor_h == ANCHOR_NORTH))
return GOO_CANVAS_ANCHOR_NORTH_WEST;
if ((anchor_v == ANCHOR_WEST) && (anchor_h == ANCHOR_SOUTH))
return GOO_CANVAS_ANCHOR_SOUTH_WEST;
return GOO_CANVAS_ANCHOR_SOUTH_EAST;
}
static void
part_changed (ItemData *data)
{
Part *part;
Coords loc = {0., 0.};
int angle = 0;
IDFlip flip = ID_FLIP_NONE;
g_return_if_fail (IS_PART (data));
part = (Part *)data;
flip = part_get_flip (part);
angle = part_get_rotation (part);
item_data_get_pos (data, &loc);
#if 0
//FIXME isn't it more sane to just emit the changed?
g_signal_emit_by_name (data, "moved", &loc);
g_signal_emit_by_name (data, "flipped", flip);
g_signal_emit_by_name (data, "rotated", angle);
#endif
g_signal_emit_by_name (data, "changed");
}
static void
part_print (ItemData *data, cairo_t *cr, SchematicPrintContext *ctx)
{
GSList *objects, *labels;
SymbolObject *object;
LibrarySymbol *symbol;
double x0, y0;
int i, rotation;
Part *part;
PartPriv *priv;
Coords pos;
IDFlip flip;
GooCanvasPoints *line;
g_return_if_fail (data != NULL);
g_return_if_fail (IS_PART (data));
part = PART (data);
priv = part->priv;
symbol = library_get_symbol (priv->symbol_name);
if (symbol == NULL) {
return;
}
item_data_get_pos (ITEM_DATA (part), &pos);
x0 = pos.x;
y0 = pos.y;
cairo_save (cr);
gdk_cairo_set_source_rgba (cr, &ctx->colors.components);
rotation = part_get_rotation (part);
flip = part_get_flip (part);
if ((flip & ID_FLIP_HORIZ) && (flip & ID_FLIP_VERT))
rotation += 180;
else if (flip == ID_FLIP_HORIZ)
cairo_scale (cr, -1, 1);
else if (flip == ID_FLIP_VERT)
cairo_scale (cr, 1, -1);
if (rotation %= 360)
cairo_rotate (cr, rotation*M_PI/180);
for (objects = symbol->symbol_objects; objects; objects = objects->next) {
object = (SymbolObject *)(objects->data);
switch (object->type) {
case SYMBOL_OBJECT_LINE:
line = object->u.uline.line;
for (i = 0; i < line->num_points; i++) {
double x, y;
x = line->coords[i * 2];
y = line->coords[i * 2 + 1];
if (i == 0)
cairo_move_to (cr, x0 + x, y0 + y);
else
cairo_line_to (cr, x0 + x, y0 + y);
}
break;
case SYMBOL_OBJECT_ARC: {
gdouble x1 = object->u.arc.x1;
gdouble y1 = object->u.arc.y1;
gdouble x2 = object->u.arc.x2;
gdouble y2 = object->u.arc.y2;
gdouble width, height, x, y;
x = (x2 + x1) / 2;
y = (y2 + y1) / 2;
width = x2 - x1;
height = y2 - y1;
cairo_save (cr);
cairo_translate (cr, x0 + x, y0 + y);
cairo_scale (cr, width / 2.0, height / 2.0);
cairo_arc (cr, 0.0, 0.0, 1.0, 0.0, 2 * M_PI);
cairo_restore (cr);
}
break;
default:
g_warning (
"Print part: Part %s contains unknown object.",
priv->name
);
continue;
}
cairo_stroke (cr);
}
// We don't want to rotate labels text, only the (x,y) coordinate
gdk_cairo_set_source_rgba (cr, &ctx->colors.labels);
for (labels = part_get_labels (part); labels; labels = labels->next) {
gdouble x, y;
PartLabel *label = (PartLabel *)labels->data;
gchar *text;
/* gint text_width, text_height; */
x = label->pos.x + x0;
y = label->pos.y + y0;
text = part_property_expand_macros (part, label->text);
/* Align the label.
switch (rotation) {
case 90:
y += text_height*opc->scale;
break;
case 180:
break;
case 270:
x -= text_width*opc->scale;
break;
case 0:
default:
break;
} */
cairo_save (cr);
cairo_move_to (cr, x, y);
cairo_show_text (cr, text);
cairo_restore (cr);
g_free (text);
}
cairo_restore (cr);
}
/**
* whenever the model changes, this one gets called to update the view representation
* @attention this recalculates the matrix every time, this makes sure no errors stack up
* @attention further reading on matrix manipulations
* @attention http://www.cairographics.org/matrix_transform/
* @param data the model item, a bare C struct derived from ItemData
* @param sheet_item the view item, derived from goo_canvas_group/item
*/
static void
part_changed_callback (ItemData *data, SheetItem *sheet_item)
{
//TODO add static vars in order to skip the redraw if nothing changed
//TODO may happen once in a while and the check is really cheap
GSList *iter;
GooCanvasAnchorType anchor;
GooCanvasGroup *group;
GooCanvasItem *canvas_item;
PartItem *item;
PartItemPriv *priv;
Part *part;
int index = 0;
Coords pos;
double scale_h, scale_v;
// states
int rotation;
IDFlip flip;
g_return_if_fail (sheet_item != NULL);
g_return_if_fail (IS_PART_ITEM (sheet_item));
item = PART_ITEM (sheet_item);
group = GOO_CANVAS_GROUP (item);
part = PART (data);
priv = item->priv;
// init the states
flip = part_get_flip (part);
rotation = part_get_rotation (part);
DEGSANITY (rotation);
scale_h = (flip & ID_FLIP_HORIZ) ? -1. : 1.;
scale_v = (flip & ID_FLIP_VERT) ? -1. : 1.;
item_data_get_pos (data, &pos);
// Move the canvas item and invalidate the bbox cache.
goo_canvas_item_set_simple_transform (GOO_CANVAS_ITEM (sheet_item),
pos.x,
pos.y,
1.0,
0.0);
cairo_matrix_t morph, inv;
cairo_status_t done;
cairo_matrix_init_rotate (&morph, DEG2RAD (rotation));
cairo_matrix_scale (&morph, scale_h, scale_v);
inv = morph;
done = cairo_matrix_invert (&inv);
if (done != CAIRO_STATUS_SUCCESS) {
g_warning ("Failed to invert matrix. This should never happen. Never!");
return;
}
// rotate all items in the canvas group
for (index = 0; index < group->items->len; index++) {
canvas_item = GOO_CANVAS_ITEM (group->items->pdata[index]);
goo_canvas_item_set_transform (GOO_CANVAS_ITEM (canvas_item), &morph);
}
// revert the rotation of all labels and change their anchor to not overlap too badly
// this assures that the text is always horizontal and properly aligned
anchor = angle_to_anchor (rotation);
for (iter = priv->label_items; iter; iter = iter->next) {
g_object_set (iter->data,
"anchor", anchor,
NULL);
goo_canvas_item_set_transform (iter->data, &inv);
}
// same for label nodes
for (iter = priv->label_nodes; iter; iter = iter->next) {
g_object_set (iter->data,
"anchor", anchor,
NULL);
goo_canvas_item_set_transform (iter->data, &inv);
}
// Invalidate the bounding box cache.
priv->cache_valid = FALSE;
}
static void
create_canvas_label_nodes (PartItem *item, Part *part)
{
GooCanvasItem *canvas_item;
GSList *item_list;
GooCanvasItem *group;
Pin *pins;
int num_pins, i;
Coords p1, p2;
GooCanvasAnchorType anchor;
g_return_if_fail (item != NULL);
g_return_if_fail (IS_PART_ITEM (item));
g_return_if_fail (part != NULL);
g_return_if_fail (IS_PART (part));
num_pins = part_get_num_pins (part);
pins = part_get_pins (part);
group = item->priv->node_group;
item_list = NULL;
get_cached_bounds (item, &p1, &p2);
switch (part_get_rotation (part)) {
case 0:
anchor = GOO_CANVAS_ANCHOR_SOUTH_WEST;
break;
case 90:
anchor = GOO_CANVAS_ANCHOR_NORTH_WEST;
break;
case 180:
anchor = GOO_CANVAS_ANCHOR_NORTH_EAST;
break;
case 270:
anchor = GOO_CANVAS_ANCHOR_SOUTH_EAST;
break;
default:
anchor = GOO_CANVAS_ANCHOR_SOUTH_WEST;
}
for (i = 0; i < num_pins; i++) {
int x, y;
char *text;
x = pins[i].offset.x;
y = pins[i].offset.y;
text = g_strdup_printf ("%d", pins[i].node_nr);
canvas_item = goo_canvas_text_new (GOO_CANVAS_ITEM (group),
text,
(double) x,
(double) y,
0,
anchor,
"fill_color", "black",
"font", "Sans 8",
NULL);
// Shift slightly the label for a Voltmeter
if (i == 0) goo_canvas_item_translate (canvas_item, -15.0, -10.0);
item_list = g_slist_prepend (item_list, canvas_item);
g_free (text);
}
item_list = g_slist_reverse (item_list);
item->priv->label_nodes = item_list;
}
static void
write_xml_part (Part *part, parseXmlContext *ctxt)
{
PartPriv *priv;
xmlNodePtr node_part;
gchar *str;
Coords pos;
g_return_if_fail (part!=NULL);
g_return_if_fail (IS_PART(part));
priv = part->priv;
// Create a node for the part.
node_part = xmlNewChild (ctxt->node_parts, ctxt->ns, BAD_CAST "part", NULL);
if (!node_part) {
g_warning ("Failed during save of part %s.\n", priv->name);
return;
}
str = g_strdup_printf ("%d", part_get_rotation (part));
xmlNewChild (node_part, ctxt->ns, BAD_CAST "rotation",
xmlEncodeEntitiesReentrant (ctxt->doc, BAD_CAST str));
g_free (str);
if (priv->flip & ID_FLIP_HORIZ)
xmlNewChild (node_part, ctxt->ns, BAD_CAST "flip",
xmlEncodeEntitiesReentrant (ctxt->doc, BAD_CAST "horizontal"));
if (priv->flip & ID_FLIP_VERT)
xmlNewChild (node_part, ctxt->ns, BAD_CAST "flip",
xmlEncodeEntitiesReentrant (ctxt->doc, BAD_CAST "vertical"));
// Store the name.
xmlNewChild (node_part, ctxt->ns, BAD_CAST "name",
xmlEncodeEntitiesReentrant (ctxt->doc, BAD_CAST priv->name));
// Store the name of the library the part resides in.
xmlNewChild (node_part, ctxt->ns, BAD_CAST "library",
xmlEncodeEntitiesReentrant (ctxt->doc, BAD_CAST priv->library->name));
// Which symbol to use.
xmlNewChild (node_part, ctxt->ns, BAD_CAST "symbol",
xmlEncodeEntitiesReentrant (ctxt->doc, BAD_CAST priv->symbol_name));
// Position.
item_data_get_pos (ITEM_DATA (part), &pos);
str = g_strdup_printf ("(%g %g)", pos.x, pos.y);
xmlNewChild (node_part, ctxt->ns, BAD_CAST "position", BAD_CAST str);
g_free (str);
// Create a node for the properties.
ctxt->node_props = xmlNewChild (node_part, ctxt->ns, BAD_CAST "properties",
NULL);
if (!ctxt->node_props) {
g_warning ("Failed during save of part %s.\n", priv->name);
return;
}
else{
g_slist_foreach (priv->properties, (GFunc) write_xml_property,
ctxt);
}
// Create a node for the labels.
ctxt->node_labels = xmlNewChild (node_part, ctxt->ns, BAD_CAST "labels", NULL);
if (!ctxt->node_labels) {
g_warning ("Failed during save of part %s.\n", priv->name);
return;
}
else{
g_slist_foreach (priv->labels, (GFunc) write_xml_label, ctxt);
}
}