static bool
sp_select_context_abort(SPEventContext *event_context)
{
SPDesktop *desktop = event_context->desktop;
SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
Inkscape::SelTrans *seltrans = sc->_seltrans;
if (sc->dragging) {
if (sc->moved) { // cancel dragging an object
seltrans->ungrab();
sc->moved = FALSE;
sc->dragging = FALSE;
sp_event_context_discard_delayed_snap_event(event_context);
drag_escaped = 1;
if (sc->item) {
// only undo if the item is still valid
if (SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))) {
sp_document_undo(sp_desktop_document(desktop));
}
sp_object_unref( SP_OBJECT(sc->item), NULL);
} else if (sc->button_press_ctrl) {
// NOTE: This is a workaround to a bug.
// When the ctrl key is held, sc->item is not defined
// so in this case (only), we skip the object doc check
sp_document_undo(sp_desktop_document(desktop));
}
sc->item = NULL;
SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));
return true;
}
} else {
if (Inkscape::Rubberband::get(desktop)->is_started()) {
Inkscape::Rubberband::get(desktop)->stop();
rb_escaped = 1;
SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));
return true;
}
}
return false;
}
/**
* Called to handle events on knots.
*/
static int sp_knot_handler(SPCanvasItem */*item*/, GdkEvent *event, SPKnot *knot)
{
g_assert(knot != NULL);
g_assert(SP_IS_KNOT(knot));
/* Run client universal event handler, if present */
gboolean consumed = FALSE;
g_signal_emit(knot, knot_signals[EVENT], 0, event, &consumed);
if (consumed) {
return TRUE;
}
g_object_ref(knot);
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
switch (event->type) {
case GDK_2BUTTON_PRESS:
if (event->button.button == 1) {
g_signal_emit(knot, knot_signals[DOUBLECLICKED], 0, event->button.state);
grabbed = FALSE;
moved = FALSE;
consumed = TRUE;
}
break;
case GDK_BUTTON_PRESS:
if (event->button.button == 1 && !knot->desktop->event_context->space_panning) {
Geom::Point const p = knot->desktop->w2d(Geom::Point(event->button.x, event->button.y));
sp_knot_start_dragging(knot, p, (gint) event->button.x, (gint) event->button.y, event->button.time);
consumed = TRUE;
}
break;
case GDK_BUTTON_RELEASE:
if (event->button.button == 1 && !knot->desktop->event_context->space_panning) {
knot->pressure = 0;
if (transform_escaped) {
transform_escaped = false;
consumed = TRUE;
} else {
sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
if (!nograb) {
sp_canvas_item_ungrab(knot->item, event->button.time);
}
if (moved) {
sp_knot_set_flag(knot,
SP_KNOT_DRAGGING,
FALSE);
g_signal_emit(knot,
knot_signals[UNGRABBED], 0,
event->button.state);
knot->_ungrabbed_signal.emit(knot);
} else {
g_signal_emit(knot,
knot_signals[CLICKED], 0,
event->button.state);
knot->_click_signal.emit(knot, event->button.state);
}
grabbed = FALSE;
moved = FALSE;
consumed = TRUE;
}
}
break;
case GDK_MOTION_NOTIFY:
if (grabbed && !knot->desktop->event_context->space_panning) {
consumed = TRUE;
if ( within_tolerance
&& ( abs( (gint) event->motion.x - xp ) < tolerance )
&& ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
break; // do not drag if we're within tolerance from origin
}
// Once the user has moved farther than tolerance from the original location
// (indicating they intend to move the object, not click), then always process the
// motion notify coordinates as given (no snapping back to origin)
within_tolerance = false;
if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &knot->pressure))
knot->pressure = CLAMP (knot->pressure, 0, 1);
else
knot->pressure = 0.5;
if (!moved) {
g_signal_emit(knot,
knot_signals[GRABBED], 0,
event->motion.state);
sp_knot_set_flag(knot,
SP_KNOT_DRAGGING,
TRUE);
}
Geom::Point const motion_w(event->motion.x, event->motion.y);
Geom::Point const motion_dt = knot->desktop->w2d(motion_w);
Geom::Point p = motion_dt - knot->grabbed_rel_pos;
sp_knot_request_position (knot, p, event->motion.state);
knot->desktop->scroll_to_point (motion_dt);
knot->desktop->set_coordinate_status(knot->pos); // display the coordinate of knot, not cursor - they may be different!
if (event->motion.state & GDK_BUTTON1_MASK)
gobble_motion_events(GDK_BUTTON1_MASK);
moved = TRUE;
}
break;
case GDK_ENTER_NOTIFY:
sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, TRUE);
sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
if (knot->tip) {
knot->desktop->event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, knot->tip);
}
grabbed = FALSE;
moved = FALSE;
consumed = TRUE;
break;
case GDK_LEAVE_NOTIFY:
sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, FALSE);
sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
if (knot->tip) {
knot->desktop->event_context->defaultMessageContext()->clear();
}
grabbed = FALSE;
moved = FALSE;
consumed = TRUE;
break;
case GDK_KEY_PRESS: // keybindings for knot
switch (get_group0_keyval(&event->key)) {
case GDK_Escape:
sp_knot_set_flag(knot, SP_KNOT_GRABBED, FALSE);
if (!nograb) {
sp_canvas_item_ungrab(knot->item, event->button.time);
}
if (moved) {
sp_knot_set_flag(knot,
SP_KNOT_DRAGGING,
FALSE);
g_signal_emit(knot,
knot_signals[UNGRABBED], 0,
event->button.state);
sp_document_undo(sp_desktop_document(knot->desktop));
knot->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Node or handle drag canceled."));
transform_escaped = true;
consumed = TRUE;
}
grabbed = FALSE;
moved = FALSE;
break;
default:
consumed = FALSE;
break;
}
break;
default:
break;
}
g_object_unref(knot);
return consumed;
}
