/*traverse the stack and return the magnetic field*/
int mcmagnet_get_field(double x, double y, double z, double t, double *bx,double *by, double *bz, void *dummy){
mcmagnet_field_info *p=stack[0];
Coords in,loc,b,bsum={0,0,0},zero={0,0,0};
Rotation r;
/*PROP_MAGNET takes care of transforming local "PROP" coordinates to lab system*/
in.x=x;in.y=y;in.z=z;
int i=0,stat=1;
p=stack[i];
*bx=0;*by=0;*bz=0;
if (!p) return 0;
//mcmagnet_print_stack();
//printf("getfield_(lab):_(xyz,t)=( %g %g %g %g )\n",x,y,z,t);
while(p){
/*transform to the coordinate system of the particular magnetic function*/
loc=coords_sub(rot_apply(*(p->rot),in),*(p->pos));
stat=(p->func) (loc.x,loc.y,loc.z,t,&(b.x),&(b.y),&(b.z),p->data);
/*check if the field function should be garbage collected*/
//printf("getfield_(loc):_(xyz,t)=( %g %g %g %g )\n",loc.x,loc.y,loc.z,t);
if (stat){
/*transform to the lab system and add up. (resusing loc variable - to now contain the field in lab coords)*/
rot_transpose(*(p->rot),r);
loc=rot_apply(r,b);
bsum.x+=loc.x;bsum.y+=loc.y;bsum.z+=loc.z;
//printf("Bs=(%g %g %g), B=(%g %g %g)\n",bsum.x,bsum.y,bsum.z,loc.x,loc.y,loc.z);
}
if (p->stop) break;
p=stack[++i];
}
/*we now have the magnetic field in lab coords in loc., transfer it back to caller*/
*bx=bsum.x;
*by=bsum.y;
*bz=bsum.z;
return 1;
}
/**
* rotate an item by an @angle increment (may be negative)
* @angle the increment the item will be rotated (usually 90° steps)
* @center_pos if rotated as part of a group, this is the center to rotate around
* FIXME XXX TODO an issue arises as the center changes with part_rotate
* FIXME XXX TODO the view callback needs to compensate this somehow
*/
static void
part_rotate (ItemData *data, int angle, Coords *center_pos)
{
cairo_matrix_t affine;
double x, y;
Part *part;
PartPriv *priv;
int i, tot_rotation;
Coords b1, b2;
Coords part_center_before, part_center_after, delta;
Coords delta_cp_before, delta_cp_after;
gboolean handler_connected;
g_return_if_fail (data);
g_return_if_fail (IS_PART (data));
if (angle == 0)
return;
part = PART (data);
priv = part->priv;
tot_rotation = (priv->rotation + angle + 360) % 360;
NG_DEBUG ("rotation: angle=%i tot_rotation=%i", angle, tot_rotation);
// use the cairo matrix funcs to transform the pin
// positions relative to the item center
// this is only indirectly related to displaying
cairo_matrix_init_rotate (&affine, (double)angle * M_PI / 180.);
if (center_pos) {
delta_cp_before = coords_sub (&part_center_before, center_pos);
delta_cp_after = delta_cp_before;
cairo_matrix_transform_point (&affine, &delta_cp_after.x, &delta_cp_after.y);
}
priv->rotation = tot_rotation;
angle = tot_rotation;
// Rotate the pins.
for (i = 0; i < priv->num_pins; i++) {
x = priv->pins[i].offset.x;
y = priv->pins[i].offset.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->pins[i].offset.x = x;
priv->pins[i].offset.y = y;
}
// Rotate the bounding box, recenter to old center
item_data_get_relative_bbox (ITEM_DATA (part), &b1, &b2);
part_center_before = coords_average (&b1, &b2);
cairo_matrix_transform_point (&affine, &b1.x, &b1.y);
cairo_matrix_transform_point (&affine, &b2.x, &b2.y);
item_data_set_relative_bbox (ITEM_DATA (part), &b1, &b2);
part_center_after = coords_average (&b1, &b2);
delta = coords_sub (&part_center_before, &part_center_after);
if (center_pos) {
Coords diff = coords_sub (&delta_cp_after, &delta_cp_before);
coords_add (&delta, &diff);
}
item_data_move (data, &delta);
item_data_snap (data);
handler_connected = g_signal_handler_is_connected (G_OBJECT (part),
ITEM_DATA (part)->rotated_handler_id);
if (handler_connected) {
g_signal_emit_by_name (G_OBJECT (part),
"rotated", tot_rotation);
}
handler_connected = g_signal_handler_is_connected (G_OBJECT (part),
ITEM_DATA (part)->changed_handler_id);
if (handler_connected) {
g_signal_emit_by_name (G_OBJECT (part),
"changed");
}
}
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");
}
// Event handler for a "floating" group of objects.
int sheet_item_floating_event (Sheet *sheet, const GdkEvent *event)
{
SheetPriv *priv;
GList *list;
static gboolean keep = FALSE;
// Remember the start position of the mouse cursor.
static Coords last = {0., 0.};
// Mouse cursor position in window coordinates, snapped to the grid spacing.
static Coords snapped = {0., 0.};
// Move the selected item(s) by this movement.
Coords delta = {0., 0.};
g_return_val_if_fail (sheet != NULL, FALSE);
g_return_val_if_fail (IS_SHEET (sheet), FALSE);
g_return_val_if_fail (sheet->priv->floating_objects != NULL, FALSE);
priv = sheet->priv;
switch (event->type) {
case GDK_BUTTON_RELEASE:
g_signal_stop_emission_by_name (sheet, "event");
break;
case GDK_BUTTON_PRESS:
if (sheet->state != SHEET_STATE_FLOAT)
return TRUE;
switch (event->button.button) {
case 2:
case 4:
case 5:
return FALSE;
case 1:
// do not free the floating items, but use them like a stamp
keep = event->button.state & GDK_CONTROL_MASK;
// Continue adding if CTRL is pressed
if (!keep) {
sheet->state = SHEET_STATE_NONE;
g_signal_stop_emission_by_name (sheet, "event");
if (g_signal_handler_is_connected (sheet, sheet->priv->float_handler_id))
g_signal_handler_disconnect (sheet, sheet->priv->float_handler_id);
sheet->priv->float_handler_id = 0;
}
// FIXME assert that `Coords current` has been set by now!
for (list = priv->floating_objects; list; list = list->next) {
SheetItem *floating_item;
ItemData *floating_data;
// Create a real item.
floating_item = list->data;
if (!keep) {
floating_data = sheet_item_get_data (floating_item);
g_object_set (floating_item, "visibility", GOO_CANVAS_ITEM_INVISIBLE, NULL);
} else {
// FIXME the bounding box of the clone is wrong
floating_data = item_data_clone (sheet_item_get_data (floating_item));
}
g_object_ref (G_OBJECT (floating_data));
NG_DEBUG ("Item Data Pos will be %lf %lf", snapped.x, snapped.y)
item_data_set_pos (floating_data, &snapped);
item_data_snap (floating_data, sheet->grid);
schematic_add_item (schematic_view_get_schematic_from_sheet (sheet), floating_data);
if (!keep)
g_object_unref (G_OBJECT (floating_item));
}
if (keep) {
g_object_set (G_OBJECT (priv->floating_group), "x", snapped.x, "y", snapped.y,
NULL);
} else {
g_list_free (priv->floating_objects);
priv->floating_objects = NULL;
}
break;
case 3:
// Cancel the "float-placement" for button-3 clicks.
g_signal_stop_emission_by_name (sheet, "event");
sheet_item_cancel_floating (sheet);
break;
}
break;
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
g_signal_stop_emission_by_name (sheet, "event");
return TRUE;
case GDK_MOTION_NOTIFY:
// keep track of the position, as `sheet_get_pointer*()` does not work
// in other events than MOTION_NOTIFY
#if 0
{
Coords tmp;
last = current;
if (sheet_get_pointer (sheet, &tmp.x, &tmp.y)) {
snapped_current = current = tmp;
snap_to_grid (sheet->grid, &snapped_current.x, &snapped_current.y);
}
}
#endif
if (sheet->state != SHEET_STATE_FLOAT && sheet->state != SHEET_STATE_FLOAT_START)
return FALSE;
g_signal_stop_emission_by_name (sheet, "event");
// Get pointer position independantly of the zoom
if (sheet->state == SHEET_STATE_FLOAT_START) {
sheet->state = SHEET_STATE_FLOAT;
last.x = last.y = 0.;
// Reparent the selected objects so that we can move them
// efficiently.
for (list = priv->floating_objects; list; list = list->next) {
sheet_item_reparent (SHEET_ITEM (list->data), priv->floating_group);
// Set the floating item visible
g_object_set (G_OBJECT (list->data), "visibility", GOO_CANVAS_ITEM_VISIBLE, NULL);
}
#if 0
GooCanvasBounds box;
goo_canvas_item_get_bounds (priv->floating_group, &box);
#endif
NG_DEBUG ("\n\n\nFLOAT ### START\n\n\n\n");
}
sheet_get_pointer_snapped (sheet, &snapped.x, &snapped.y);
delta = coords_sub (&snapped, &last);
NG_DEBUG ("drag floating current sx=%lf sy=%lf \n", snapped.x, snapped.y);
NG_DEBUG ("drag floating last lx=%lf ly=%lf \n", last.x, last.y);
NG_DEBUG ("drag floating delta -> dx=%lf dy=%lf \n", delta.x, delta.y);
#if !FIXME_INCREMENTAL_MOVMENT_DOES_NOT_WORK
last = snapped;
#else
goo_canvas_item_set_transform (GOO_CANVAS_ITEM (priv->floating_group), NULL);
#endif
goo_canvas_item_translate (GOO_CANVAS_ITEM (priv->floating_group), delta.x, delta.y);
break;
case GDK_KEY_PRESS:
switch (event->key.keyval) {
case GDK_KEY_r:
case GDK_KEY_R: {
Coords bbdelta;
GooCanvasBounds bounds;
// Center the objects around the mouse pointer.
goo_canvas_item_get_bounds (GOO_CANVAS_ITEM (priv->floating_group), &bounds);
bbdelta.x = (bounds.x2 - bounds.x1) / 2.;
bbdelta.y = (bounds.y2 - bounds.y1) / 2.;
sheet_rotate_ghosts (sheet);
// Center the objects around the mouse pointer.
goo_canvas_item_get_bounds (GOO_CANVAS_ITEM (priv->floating_group), &bounds);
bbdelta.x -= (bounds.x2 - bounds.x1) / 2.;
bbdelta.y -= (bounds.y2 - bounds.y1) / 2.;
snap_to_grid (sheet->grid, &bbdelta.x, &bbdelta.y);
goo_canvas_item_translate (GOO_CANVAS_ITEM (priv->floating_group), bbdelta.x,
bbdelta.y);
} break;
default:
return FALSE;
}
default:
return FALSE;
}
return TRUE;
}
// Event handler for a SheetItem
gboolean sheet_item_event (GooCanvasItem *sheet_item, GooCanvasItem *sheet_target_item,
GdkEvent *event, Sheet *sheet)
{
// Remember the last position of the mouse cursor.
GooCanvas *canvas;
SheetPriv *priv;
GList *list;
static Coords last, current, snapped;
// snapped : Mouse cursor position in window coordinates, snapped to the grid
// spacing.
// delta : Move the selected item(s) by this movement.
Coords delta;
g_return_val_if_fail (sheet_item != NULL, FALSE);
g_return_val_if_fail (sheet != NULL, FALSE);
priv = sheet->priv;
canvas = GOO_CANVAS (sheet);
switch (event->type) {
case GDK_BUTTON_PRESS:
// Grab focus to sheet for correct use of events
gtk_widget_grab_focus (GTK_WIDGET (sheet));
switch (event->button.button) {
case 1:
g_signal_stop_emission_by_name (sheet_item, "button_press_event");
sheet->state = SHEET_STATE_DRAG_START;
g_assert (sheet_get_pointer (sheet, &last.x, &last.y));
break;
case 3:
g_signal_stop_emission_by_name (sheet_item, "button_press_event");
if (sheet->state != SHEET_STATE_NONE)
return TRUE;
// Bring up a context menu for right button clicks.
if (!SHEET_ITEM (sheet_item)->priv->selected &&
!((event->button.state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK))
sheet_select_all (sheet, FALSE);
sheet_item_select (SHEET_ITEM (sheet_item), TRUE);
sheet_item_run_menu (SHEET_ITEM (sheet_item), sheet, (GdkEventButton *)event);
break;
default:
return FALSE;
}
break;
case GDK_2BUTTON_PRESS:
// Do not interfere with object dragging.
if (sheet->state == SHEET_STATE_DRAG)
return FALSE;
switch (event->button.button) {
case 1:
if (sheet->state == SHEET_STATE_DRAG_START)
sheet->state = SHEET_STATE_NONE;
g_signal_stop_emission_by_name (sheet_item, "button_press_event");
g_signal_emit_by_name (sheet_item, "double_clicked");
break;
default:
return FALSE;
}
break;
case GDK_3BUTTON_PRESS:
g_signal_stop_emission_by_name (sheet_item, "button_press_event");
return TRUE;
case GDK_BUTTON_RELEASE:
switch (event->button.button) {
case 1:
if (sheet->state != SHEET_STATE_DRAG && sheet->state != SHEET_STATE_DRAG_START)
return TRUE;
g_signal_stop_emission_by_name (sheet_item, "button-release-event");
if (sheet->state == SHEET_STATE_DRAG_START) {
sheet->state = SHEET_STATE_NONE;
if (!(event->button.state & GDK_SHIFT_MASK))
sheet_select_all (sheet, FALSE);
if (IS_SHEET_ITEM (sheet_item))
sheet_item_select (SHEET_ITEM (sheet_item), TRUE);
return TRUE;
}
// Get the mouse motion
g_assert (sheet_get_pointer (sheet, &snapped.x, &snapped.y));
delta = coords_sub (&snapped, &last);
sheet->state = SHEET_STATE_NONE;
goo_canvas_pointer_ungrab (canvas, GOO_CANVAS_ITEM (sheet_item), event->button.time);
// Reparent the selected objects to the normal group
// to have correct behaviour
for (list = priv->selected_objects; list; list = list->next) {
sheet_item_reparent (SHEET_ITEM (list->data), sheet->object_group);
}
for (list = priv->selected_objects; list; list = list->next) {
ItemData *item_data;
item_data = SHEET_ITEM (list->data)->priv->data;
item_data_move (item_data, &delta);
item_data_snap (item_data, sheet->grid);
item_data_register (item_data);
}
break;
}
case GDK_KEY_PRESS:
switch (event->key.keyval) {
case GDK_KEY_r: {
#ifndef FIXME_STILL_MINI_OFFSET
Coords bbdelta;
GooCanvasBounds bounds;
// Center the objects around the mouse pointer.
goo_canvas_item_get_bounds (GOO_CANVAS_ITEM (priv->selected_group), &bounds);
bbdelta.x = (bounds.x2 - bounds.x1) / 2.;
bbdelta.y = (bounds.y2 - bounds.y1) / 2.;
#endif
sheet_rotate_selection (sheet, 90);
#ifndef FIXME_STILL_MINI_OFFSET
// Center the objects around the mouse pointer.
goo_canvas_item_get_bounds (GOO_CANVAS_ITEM (priv->selected_group), &bounds);
bbdelta.x -= (bounds.x2 - bounds.x1) / 2.;
bbdelta.y -= (bounds.y2 - bounds.y1) / 2.;
snap_to_grid (sheet->grid, &bbdelta.x, &bbdelta.y);
goo_canvas_item_translate (GOO_CANVAS_ITEM (priv->selected_group), bbdelta.x,
bbdelta.y);
#endif
} break;
default:
return FALSE;
}
return TRUE;
case GDK_MOTION_NOTIFY:
if (sheet->state != SHEET_STATE_DRAG && sheet->state != SHEET_STATE_DRAG_START)
return FALSE;
if (sheet->state == SHEET_STATE_DRAG_START) {
sheet->state = SHEET_STATE_DRAG;
// Update the selection if needed.
if (IS_SHEET_ITEM (sheet_item) && (!SHEET_ITEM (sheet_item)->priv->selected)) {
if (!(event->button.state & GDK_SHIFT_MASK)) {
sheet_select_all (sheet, FALSE);
}
sheet_item_select (SHEET_ITEM (sheet_item), TRUE);
}
// Reparent the selected objects so that we can move them
// efficiently.
for (list = priv->selected_objects; list; list = list->next) {
ItemData *item_data;
item_data = SHEET_ITEM (list->data)->priv->data;
item_data_unregister (item_data);
sheet_item_reparent (SHEET_ITEM (list->data), priv->selected_group);
}
goo_canvas_pointer_grab (canvas, GOO_CANVAS_ITEM (sheet_item),
GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, NULL,
event->button.time);
}
// Set last_x & last_y to the pointer position
sheet_get_pointer (sheet, &snapped.x, &snapped.y);
delta = coords_sub (&snapped, &last);
// Check that we don't move outside the sheet...
// Horizontally:
/*
if (cx1 <= 0) { // leftmost edge
dx = dx - x1;
snap_to_grid (sheet->grid, &dx, NULL);
snapped_x = last_x + dx;
}
else if (cx2 >= sheet_width) { // rightmost edge
dx = dx - (x2 - sheet_width / priv->zoom);
snap_to_grid (sheet->grid, &dx, NULL);
snapped_x = last_x + dx;
}
// And vertically:
if (cy1 <= 0) { // upper edge
dy = dy - y1;
snap_to_grid (sheet->grid, NULL, &dy);
snapped_y = last_y + dy;
}
else if (cy2 >= sheet_height) { // lower edge
dy = dy - (y2 - sheet_height / priv->zoom);
snap_to_grid (sheet->grid, NULL, &dy);
snapped_y = last_y + dy;
}
//last_x = snapped_x;
//last_y = snapped_y;
*/
#if !FIXME_INCREMENTAL_MOVMENT_DOES_NOT_WORK
last = snapped;
#else
goo_canvas_item_set_transform (GOO_CANVAS_ITEM (priv->selected_group), NULL);
#endif
goo_canvas_item_translate (GOO_CANVAS_ITEM (priv->selected_group), delta.x, delta.y);
return TRUE;
default:
return FALSE;
}
return TRUE;
}
/**
* \brief rotate an item by an @angle increment (may be negative)
*
* @angle the increment the item will be rotated (usually 90° steps)
* @center_pos if rotated as part of a group, this is the center to rotate
*around
*/
static void part_rotate (ItemData *data, int angle, Coords *center_pos)
{
g_return_if_fail (data);
g_return_if_fail (IS_PART (data));
cairo_matrix_t morph, morph_rot, local_rot;
Part *part;
PartPriv *priv;
gboolean handler_connected;
// Coords b1, b2;
part = PART (data);
priv = part->priv;
// FIXME store vanilla coords, apply the morph
// FIXME to these and store the result in the
// FIXME instance then everything will be fine
// XXX also prevents rounding yiggle up downs
angle /= 90;
angle *= 90;
cairo_matrix_init_rotate (&local_rot, (double)angle * M_PI / 180.);
cairo_matrix_multiply (item_data_get_rotate (data), item_data_get_rotate (data), &local_rot);
morph_rot = *(item_data_get_rotate (data));
cairo_matrix_multiply (&morph, &morph_rot, item_data_get_translate (data));
Coords delta_to_center, delta_to_center_transformed;
Coords delta_to_apply, delta_bbox;
Coords bbox_center, bbox_center_transformed;
Coords item_pos;
// get bbox
#if 0 // this causes #115 to reappear
item_data_get_relative_bbox (ITEM_DATA (part), &b1, &b2);
bbox_center = coords_average (&b1, &b2);
#endif
item_data_get_pos (ITEM_DATA (part), &item_pos);
Coords rotation_center;
if (center_pos == NULL) {
rotation_center = coords_sum (&bbox_center, &item_pos);
} else {
rotation_center = *center_pos;
}
delta_to_center_transformed = delta_to_center = coords_sub (&rotation_center, &item_pos);
cairo_matrix_transform_point (&local_rot, &(delta_to_center_transformed.x),
&(delta_to_center_transformed.y));
delta_to_apply = coords_sub (&delta_to_center, &delta_to_center_transformed);
#define DEBUG_THIS 0
// use the cairo matrix funcs to transform the pin
// positions relative to the item center
// this is only indirectly related to displayin
// HINT: we need to modify the actual pins to make the
// pin tests work being used to detect connections
gint i;
gdouble x, y;
// Rotate the pins.
for (i = 0; i < priv->num_pins; i++) {
x = priv->pins_orig[i].offset.x;
y = priv->pins_orig[i].offset.y;
cairo_matrix_transform_point (&morph_rot, &x, &y);
if (fabs (x) < 1e-2)
x = 0.0;
if (fabs (y) < 1e-2)
y = 0.0;
priv->pins[i].offset.x = x;
priv->pins[i].offset.y = y;
}
item_data_move (data, &delta_to_apply);
handler_connected = g_signal_handler_is_connected (G_OBJECT (data), data->changed_handler_id);
if (handler_connected) {
g_signal_emit_by_name (G_OBJECT (data), "changed");
} else {
NG_DEBUG ("handler not yet registerd.");
}
NG_DEBUG ("\n\n");
}
