static gint
pencil_handle_button_press(SPPencilContext *const pc, GdkEventButton const &bevent)
{
gint ret = FALSE;
SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
if ( bevent.button == 1 && !event_context->space_panning) {
SPDrawContext *dc = SP_DRAW_CONTEXT (pc);
SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(dc);
Inkscape::Selection *selection = sp_desktop_selection(desktop);
if (Inkscape::have_viable_layer(desktop, dc->_message_context) == false) {
return TRUE;
}
Geom::Point const button_w(bevent.x, bevent.y);
/* Find desktop coordinates */
Geom::Point p = pc->desktop->w2d(button_w);
/* Test whether we hit any anchor. */
SPDrawAnchor *anchor = spdc_test_inside(pc, button_w);
pencil_drag_origin_w = Geom::Point(bevent.x,bevent.y);
pencil_within_tolerance = true;
switch (pc->state) {
case SP_PENCIL_CONTEXT_ADDLINE:
/* Current segment will be finished with release */
ret = TRUE;
break;
default:
/* Set first point of sequence */
if (bevent.state & GDK_CONTROL_MASK) {
spdc_create_single_dot(event_context, p, "/tools/freehand/pencil", bevent.state);
ret = true;
break;
}
if (anchor) {
p = anchor->dp;
desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Continuing selected path"));
} else {
if (!(bevent.state & GDK_SHIFT_MASK)) {
// This is the first click of a new curve; deselect item so that
// this curve is not combined with it (unless it is drawn from its
// anchor, which is handled by the sibling branch above)
selection->clear();
desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new path"));
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop);
Inkscape::SnappedPoint const s = m.freeSnap(Inkscape::SnapPreferences::SNAPPOINT_NODE, p);
if (s.getSnapped()) {
s.getPoint(p);
pc->prev_snap_was_succesful = true;
} else {
pc->prev_snap_was_succesful = false;
}
} else if (selection->singleItem() && SP_IS_PATH(selection->singleItem())) {
desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Appending to selected path"));
}
}
pc->sa = anchor;
spdc_set_startpoint(pc, p);
ret = TRUE;
break;
}
pc->is_drawing = true;
}
return ret;
}
gint
sp_pencil_context_root_handler (SPEventContext *ec, GdkEvent *event)
{
SPDrawContext *dc;
SPPencilContext *pc;
SPDesktop *dt;
NRPointF p;
gint ret;
SPDrawAnchor *anchor;
NRPointF fp;
dc = SP_DRAW_CONTEXT (ec);
pc = SP_PENCIL_CONTEXT (ec);
dt = ec->desktop;
ret = FALSE;
switch (event->type) {
case GDK_BUTTON_PRESS:
if (event->button.button == 1) {
NRPointF fp;
#if 0
/* Grab mouse, so release will not pass unnoticed */
dc->grab = SP_CANVAS_ITEM (dt->acetate);
sp_canvas_item_grab (dc->grab, SPDC_EVENT_MASK, NULL, event->button.time);
#endif
/* Find desktop coordinates */
sp_desktop_w2d_xy_point (dt, &fp, event->button.x, event->button.y);
p.x = fp.x;
p.y = fp.y;
/* Test, whether we hit any anchor */
anchor = test_inside (dc, event->button.x, event->button.y);
switch (pc->state) {
case SP_PENCIL_CONTEXT_ADDLINE:
/* Current segment will be finished with release */
ret = TRUE;
break;
default:
/* Set first point of sequence */
if (anchor) {
p = anchor->dp;
}
dc->sa = anchor;
spdc_set_startpoint (pc, &p, event->button.state);
ret = TRUE;
break;
}
}
break;
case GDK_MOTION_NOTIFY:
#if 1
if ((event->motion.state & GDK_BUTTON1_MASK) && !dc->grab) {
/* Grab mouse, so release will not pass unnoticed */
dc->grab = SP_CANVAS_ITEM (dt->acetate);
sp_canvas_item_grab (dc->grab, SPDC_EVENT_MASK, NULL, event->button.time);
}
#endif
/* Find desktop coordinates */
sp_desktop_w2d_xy_point (dt, &fp, event->motion.x, event->motion.y);
p.x = fp.x;
p.y = fp.y;
/* Test, whether we hit any anchor */
anchor = test_inside (dc, event->button.x, event->button.y);
switch (pc->state) {
case SP_PENCIL_CONTEXT_ADDLINE:
/* Set red endpoint */
if (anchor) {
p = anchor->dp;
}
spdc_set_endpoint (pc, &p, event->motion.state);
ret = TRUE;
break;
default:
/* We may be idle or already freehand */
if (event->motion.state & GDK_BUTTON1_MASK) {
pc->state = SP_PENCIL_CONTEXT_FREEHAND;
if (!dc->sa && !dc->green_anchor) {
/* Create green anchor */
dc->green_anchor = sp_draw_anchor_new (dc, dc->green_curve, TRUE, dc->p[0].x, dc->p[0].y);
}
/* fixme: I am not sure, whether we want to snap to anchors in middle of freehand (Lauris) */
if (anchor) {
p = anchor->dp;
} else {
sp_desktop_free_snap (dt, &p);
}
spdc_add_freehand_point (pc, &p, event->motion.state);
ret = TRUE;
}
break;
}
break;
case GDK_BUTTON_RELEASE:
if (event->button.button == 1) {
NRPointF fp;
/* Find desktop coordinates */
sp_desktop_w2d_xy_point (dt, &fp, event->motion.x, event->motion.y);
p.x = fp.x;
p.y = fp.y;
/* Test, whether we hit any anchor */
anchor = test_inside (dc, event->button.x, event->button.y);
switch (pc->state) {
case SP_PENCIL_CONTEXT_IDLE:
/* Releasing button in idle mode means single click */
/* We have already set up start point/anchor in button_press */
pc->state = SP_PENCIL_CONTEXT_ADDLINE;
ret = TRUE;
break;
case SP_PENCIL_CONTEXT_ADDLINE:
/* Finish segment now */
if (anchor) {
p = anchor->dp;
}
dc->ea = anchor;
spdc_finish_endpoint (pc, &p, !anchor, event->button.state);
pc->state = SP_PENCIL_CONTEXT_IDLE;
ret = TRUE;
break;
case SP_PENCIL_CONTEXT_FREEHAND:
/* Finish segment now */
/* fixme: Clean up what follows (Lauris) */
if (anchor) {
p = anchor->dp;
}
dc->ea = anchor;
/* Write curves to object */
g_print ("Finishing freehand\n");
spdc_concat_colors_and_flush (dc, FALSE);
dc->sa = NULL;
dc->ea = NULL;
if (dc->green_anchor) {
dc->green_anchor = sp_draw_anchor_destroy (dc->green_anchor);
}
pc->state = SP_PENCIL_CONTEXT_IDLE;
ret = TRUE;
break;
default:
break;
}
#if 1
if (dc->grab) {
/* Release grab now */
sp_canvas_item_ungrab (dc->grab, event->button.time);
dc->grab = NULL;
}
#endif
dc->grab = NULL;
ret = TRUE;
}
break;
default:
break;
}
if (!ret) {
if (((SPEventContextClass *) pencil_parent_class)->root_handler)
ret = ((SPEventContextClass *) pencil_parent_class)->root_handler (ec, event);
}
return ret;
}