// Event handler for a "floating" group of objects.
int
sheet_item_floating_event (Sheet *sheet, const GdkEvent *event)
{
SheetPriv *priv;
GList *list;
static Coords pos;
static int keep = 0;
// Remember the last position of the mouse cursor.
static double last_x, last_y;
// Mouse cursor position in window coordinates, snapped to the grid spacing.
double snapped_x, snapped_y;
// Move the selected item(s) by this movement.
double dx, dy;
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;
}
// Get pointer position in canvas coordinates
sheet_get_pointer (sheet, &pos.x, &pos.y);
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 {
floating_data = item_data_clone (sheet_item_get_data (floating_item));
}
g_object_ref (G_OBJECT (floating_data));
item_data_set_pos (floating_data, &pos);
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 (sheet->priv->floating_group),
"x", pos.x,
"y", pos.y,
NULL);
} else {
g_list_free (sheet->priv->floating_objects);
sheet->priv->floating_objects = NULL;
}
pos.x = 0.0;
pos.y = 0.0;
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:
if (sheet->state != SHEET_STATE_FLOAT &&
sheet->state != SHEET_STATE_FLOAT_START)
return FALSE;
g_signal_stop_emission_by_name (sheet, "event");
if (sheet->state == SHEET_STATE_FLOAT_START) {
sheet->state = SHEET_STATE_FLOAT;
// 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);
}
last_x = 0.0;
last_y = 0.0;
}
// Get pointer position independantly of the zoom
sheet_get_pointer (sheet, &snapped_x, &snapped_y);
// Calculate which amount to move the selected objects by.
dx = snapped_x - last_x;
dy = snapped_y - last_y;
last_x = snapped_x;
last_y = snapped_y;
for (list = priv->floating_objects; list; list = list->next) {
goo_canvas_item_translate (GOO_CANVAS_ITEM (list->data),
dx, dy);
}
g_list_free_full (list, g_object_unref);
break;
case GDK_KEY_PRESS:
switch (event->key.keyval) {
case GDK_KEY_r:
case GDK_KEY_R:
sheet_rotate_ghosts (sheet);
{
gdouble x, y;
GooCanvasBounds bounds;
sheet_get_pointer (sheet, &x, &y);
// Center the objects around the mouse pointer.
goo_canvas_item_get_bounds (
GOO_CANVAS_ITEM (priv->floating_group), &bounds);
snapped_x = x - (bounds.x1 + bounds.x2) / 2;
snapped_y = y - (bounds.y1 + bounds.y2) / 2;
snap_to_grid (sheet->grid, &snapped_x, &snapped_y);
goo_canvas_item_translate (
GOO_CANVAS_ITEM (priv->floating_group), snapped_x, snapped_y);
last_x = snapped_x;
last_y = snapped_y;
}
break;
default:
return FALSE;
}
default:
return FALSE;
}
return TRUE;
}
// 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;
}
