1 /*
2 * Selection and transformation context
3 *
4 * Authors:
5 * Lauris Kaplinski <lauris@kaplinski.com>
6 * bulia byak <buliabyak@users.sf.net>
7 * Abhishek Sharma
8 * Jon A. Cruz <jon@joncruz.org>
9 *
10 * Copyright (C) 2010 authors
11 * Copyright (C) 2006 Johan Engelen <johan@shouraizou.nl>
12 * Copyright (C) 1999-2005 Authors
13 *
14 * Released under GNU GPL, read the file 'COPYING' for more information
15 */
17 #ifdef HAVE_CONFIG_H
18 # include "config.h"
19 #endif
20 #include <cstring>
21 #include <string>
22 #include <gdk/gdkkeysyms.h>
23 #include "macros.h"
24 #include "rubberband.h"
25 #include "document.h"
26 #include "selection.h"
27 #include "seltrans-handles.h"
28 #include "sp-cursor.h"
29 #include "pixmaps/cursor-select-m.xpm"
30 #include "pixmaps/cursor-select-d.xpm"
31 #include "pixmaps/handles.xpm"
32 #include <glibmm/i18n.h>
34 #include "select-context.h"
35 #include "selection-chemistry.h"
36 #include "desktop.h"
37 #include "desktop-handles.h"
38 #include "sp-root.h"
39 #include "preferences.h"
40 #include "tools-switch.h"
41 #include "message-stack.h"
42 #include "selection-describer.h"
43 #include "seltrans.h"
44 #include "box3d.h"
45 #include "display/sp-canvas.h"
46 #include "display/nr-arena-item.h"
48 using Inkscape::DocumentUndo;
50 static void sp_select_context_class_init(SPSelectContextClass *klass);
51 static void sp_select_context_init(SPSelectContext *select_context);
52 static void sp_select_context_dispose(GObject *object);
54 static void sp_select_context_setup(SPEventContext *ec);
55 static void sp_select_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val);
56 static gint sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event);
57 static gint sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
59 static SPEventContextClass *parent_class;
61 static GdkCursor *CursorSelectMouseover = NULL;
62 static GdkCursor *CursorSelectDragging = NULL;
63 GdkPixbuf *handles[13];
65 static gint rb_escaped = 0; // if non-zero, rubberband was canceled by esc, so the next button release should not deselect
66 static gint drag_escaped = 0; // if non-zero, drag was canceled by esc
68 static gint xp = 0, yp = 0; // where drag started
69 static gint tolerance = 0;
70 static bool within_tolerance = false;
72 GtkType
73 sp_select_context_get_type(void)
74 {
75 static GType type = 0;
76 if (!type) {
77 GTypeInfo info = {
78 sizeof(SPSelectContextClass),
79 NULL, NULL,
80 (GClassInitFunc) sp_select_context_class_init,
81 NULL, NULL,
82 sizeof(SPSelectContext),
83 4,
84 (GInstanceInitFunc) sp_select_context_init,
85 NULL, /* value_table */
86 };
87 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPSelectContext", &info, (GTypeFlags)0);
88 }
89 return type;
90 }
92 static void
93 sp_select_context_class_init(SPSelectContextClass *klass)
94 {
95 GObjectClass *object_class = (GObjectClass *) klass;
96 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
98 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
100 object_class->dispose = sp_select_context_dispose;
102 event_context_class->setup = sp_select_context_setup;
103 event_context_class->set = sp_select_context_set;
104 event_context_class->root_handler = sp_select_context_root_handler;
105 event_context_class->item_handler = sp_select_context_item_handler;
106 }
108 static void
109 sp_select_context_init(SPSelectContext *sc)
110 {
111 sc->dragging = FALSE;
112 sc->moved = FALSE;
113 sc->button_press_shift = false;
114 sc->button_press_ctrl = false;
115 sc->button_press_alt = false;
116 sc->is_cycling = false;
117 sc->cycling_items = NULL;
118 sc->cycling_items_selected_before = NULL;
119 sc->cycling_cur_item = NULL;
120 sc->_seltrans = NULL;
121 sc->_describer = NULL;
123 // cursors in select context
124 CursorSelectMouseover = sp_cursor_new_from_xpm(cursor_select_m_xpm , 1, 1);
125 CursorSelectDragging = sp_cursor_new_from_xpm(cursor_select_d_xpm , 1, 1);
126 // selection handles
127 handles[0] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_nw_xpm);
128 handles[1] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_ne_xpm);
129 handles[2] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_h_xpm);
130 handles[3] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_v_xpm);
131 handles[4] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_nw_xpm);
132 handles[5] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_n_xpm);
133 handles[6] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_ne_xpm);
134 handles[7] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_e_xpm);
135 handles[8] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_se_xpm);
136 handles[9] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_s_xpm);
137 handles[10] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_sw_xpm);
138 handles[11] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_w_xpm);
139 handles[12] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_center_xpm);
140 }
142 static void
143 sp_select_context_dispose(GObject *object)
144 {
145 SPSelectContext *sc = SP_SELECT_CONTEXT(object);
146 SPEventContext * ec = SP_EVENT_CONTEXT (object);
148 ec->enableGrDrag(false);
150 if (sc->grabbed) {
151 sp_canvas_item_ungrab(sc->grabbed, GDK_CURRENT_TIME);
152 sc->grabbed = NULL;
153 }
155 delete sc->_seltrans;
156 sc->_seltrans = NULL;
157 delete sc->_describer;
158 sc->_describer = NULL;
160 if (CursorSelectDragging) {
161 gdk_cursor_unref (CursorSelectDragging);
162 CursorSelectDragging = NULL;
163 }
164 if (CursorSelectMouseover) {
165 gdk_cursor_unref (CursorSelectMouseover);
166 CursorSelectMouseover = NULL;
167 }
169 G_OBJECT_CLASS(parent_class)->dispose(object);
170 }
172 static void
173 sp_select_context_setup(SPEventContext *ec)
174 {
175 SPSelectContext *select_context = SP_SELECT_CONTEXT(ec);
177 if (((SPEventContextClass *) parent_class)->setup) {
178 ((SPEventContextClass *) parent_class)->setup(ec);
179 }
181 SPDesktop *desktop = ec->desktop;
183 select_context->_describer = new Inkscape::SelectionDescriber(
184 desktop->selection,
185 desktop->messageStack(),
186 _("Click selection to toggle scale/rotation handles"),
187 _("No objects selected. Click, Shift+click, Alt+scroll mouse on top of objects, or drag around objects to select.")
188 );
190 select_context->_seltrans = new Inkscape::SelTrans(desktop);
192 sp_event_context_read(ec, "show");
193 sp_event_context_read(ec, "transform");
195 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
196 if (prefs->getBool("/tools/select/gradientdrag")) {
197 ec->enableGrDrag();
198 }
199 }
201 static void
202 sp_select_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val)
203 {
204 SPSelectContext *sc = SP_SELECT_CONTEXT(ec);
205 Glib::ustring path = val->getEntryName();
207 if (path == "show") {
208 if (val->getString() == "outline") {
209 sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_OUTLINE);
210 } else {
211 sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_CONTENT);
212 }
213 }
214 }
216 static bool
217 sp_select_context_abort(SPEventContext *event_context)
218 {
219 SPDesktop *desktop = event_context->desktop;
220 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
221 Inkscape::SelTrans *seltrans = sc->_seltrans;
223 if (sc->dragging) {
224 if (sc->moved) { // cancel dragging an object
225 seltrans->ungrab();
226 sc->moved = FALSE;
227 sc->dragging = FALSE;
228 sp_event_context_discard_delayed_snap_event(event_context);
229 drag_escaped = 1;
231 if (sc->item) {
232 // only undo if the item is still valid
233 if (SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))) {
234 DocumentUndo::undo(sp_desktop_document(desktop));
235 }
237 sp_object_unref( SP_OBJECT(sc->item), NULL);
238 } else if (sc->button_press_ctrl) {
239 // NOTE: This is a workaround to a bug.
240 // When the ctrl key is held, sc->item is not defined
241 // so in this case (only), we skip the object doc check
242 DocumentUndo::undo(sp_desktop_document(desktop));
243 }
244 sc->item = NULL;
246 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));
247 return true;
248 }
249 } else {
250 if (Inkscape::Rubberband::get(desktop)->is_started()) {
251 Inkscape::Rubberband::get(desktop)->stop();
252 rb_escaped = 1;
253 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
254 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));
255 return true;
256 }
257 }
258 return false;
259 }
261 bool
262 key_is_a_modifier (guint key) {
263 return (key == GDK_Alt_L ||
264 key == GDK_Alt_R ||
265 key == GDK_Control_L ||
266 key == GDK_Control_R ||
267 key == GDK_Shift_L ||
268 key == GDK_Shift_R ||
269 key == GDK_Meta_L || // Meta is when you press Shift+Alt (at least on my machine)
270 key == GDK_Meta_R);
271 }
273 void
274 sp_select_context_up_one_layer(SPDesktop *desktop)
275 {
276 /* Click in empty place, go up one level -- but don't leave a layer to root.
277 *
278 * (Rationale: we don't usually allow users to go to the root, since that
279 * detracts from the layer metaphor: objects at the root level can in front
280 * of or behind layers. Whereas it's fine to go to the root if editing
281 * a document that has no layers (e.g. a non-Inkscape document).)
282 *
283 * Once we support editing SVG "islands" (e.g. <svg> embedded in an xhtml
284 * document), we might consider further restricting the below to disallow
285 * leaving a layer to go to a non-layer.
286 */
287 SPObject *const current_layer = desktop->currentLayer();
288 if (current_layer) {
289 SPObject *const parent = SP_OBJECT_PARENT(current_layer);
290 if ( parent
291 && ( SP_OBJECT_PARENT(parent)
292 || !( SP_IS_GROUP(current_layer)
293 && ( SPGroup::LAYER
294 == SP_GROUP(current_layer)->layerMode() ) ) ) )
295 {
296 desktop->setCurrentLayer(parent);
297 if (SP_IS_GROUP(current_layer) && SPGroup::LAYER != SP_GROUP(current_layer)->layerMode())
298 sp_desktop_selection(desktop)->set(current_layer);
299 }
300 }
301 }
303 static gint
304 sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
305 {
306 gint ret = FALSE;
308 SPDesktop *desktop = event_context->desktop;
309 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
310 Inkscape::SelTrans *seltrans = sc->_seltrans;
312 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
313 tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
315 // make sure we still have valid objects to move around
316 if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
317 sp_select_context_abort(event_context);
318 }
320 switch (event->type) {
321 case GDK_BUTTON_PRESS:
322 if (event->button.button == 1 && !event_context->space_panning) {
323 /* Left mousebutton */
325 // save drag origin
326 xp = (gint) event->button.x;
327 yp = (gint) event->button.y;
328 within_tolerance = true;
330 // remember what modifiers were on before button press
331 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
332 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
333 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
335 if (event->button.state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK)) {
336 // if shift or ctrl was pressed, do not move objects;
337 // pass the event to root handler which will perform rubberband, shift-click, ctrl-click, ctrl-drag
338 } else {
339 sc->dragging = TRUE;
340 sc->moved = FALSE;
342 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
344 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
346 // remember the clicked item in sc->item:
347 if (sc->item) {
348 sp_object_unref(sc->item, NULL);
349 sc->item = NULL;
350 }
351 sc->item = sp_event_context_find_item (desktop,
352 Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
353 sp_object_ref(sc->item, NULL);
355 rb_escaped = drag_escaped = 0;
357 if (sc->grabbed) {
358 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
359 sc->grabbed = NULL;
360 }
361 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->drawing),
362 GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
363 GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK,
364 NULL, event->button.time);
365 sc->grabbed = SP_CANVAS_ITEM(desktop->drawing);
367 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
369 ret = TRUE;
370 }
371 } else if (event->button.button == 3) {
372 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
373 sp_select_context_abort(event_context);
374 }
375 break;
377 case GDK_ENTER_NOTIFY:
378 {
379 if (!desktop->isWaitingCursor() && !sc->dragging) {
380 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectMouseover);
381 }
382 break;
383 }
385 case GDK_LEAVE_NOTIFY:
386 if (!desktop->isWaitingCursor() && !sc->dragging)
387 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
388 break;
390 case GDK_KEY_PRESS:
391 if (get_group0_keyval (&event->key) == GDK_space) {
392 if (sc->dragging && sc->grabbed) {
393 /* stamping mode: show content mode moving */
394 seltrans->stamp();
395 ret = TRUE;
396 }
397 }
398 break;
400 default:
401 break;
402 }
404 if (!ret) {
405 if (((SPEventContextClass *) parent_class)->item_handler)
406 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
407 }
409 return ret;
410 }
412 static void
413 sp_select_context_cycle_through_items(SPSelectContext *sc, Inkscape::Selection *selection, GdkEventScroll *scroll_event, bool shift_pressed) {
414 if (!sc->cycling_cur_item)
415 return;
417 NRArenaItem *arenaitem;
418 SPDesktop *desktop = SP_EVENT_CONTEXT(sc)->desktop;
419 SPItem *item = SP_ITEM(sc->cycling_cur_item->data);
421 // Deactivate current item
422 if (!g_list_find(sc->cycling_items_selected_before, item) && selection->includes(item))
423 selection->remove(item);
424 arenaitem = item->get_arenaitem(desktop->dkey);
425 nr_arena_item_set_opacity (arenaitem, 0.3);
427 // Find next item and activate it
428 GList *next;
429 if (scroll_event->direction == GDK_SCROLL_UP) {
430 next = sc->cycling_cur_item->next;
431 if (next == NULL)
432 next = sc->cycling_items;
433 } else {
434 next = sc->cycling_cur_item->prev;
435 if (next == NULL)
436 next = g_list_last(sc->cycling_items);
437 }
438 sc->cycling_cur_item = next;
439 item = SP_ITEM(sc->cycling_cur_item->data);
440 arenaitem = item->get_arenaitem(desktop->dkey);
441 nr_arena_item_set_opacity (arenaitem, 1.0);
443 if (shift_pressed)
444 selection->add(item);
445 else
446 selection->set(item);
447 }
449 static gint
450 sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event)
451 {
452 SPItem *item = NULL;
453 SPItem *item_at_point = NULL, *group_at_point = NULL, *item_in_group = NULL;
454 gint ret = FALSE;
456 SPDesktop *desktop = event_context->desktop;
457 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
458 Inkscape::SelTrans *seltrans = sc->_seltrans;
459 Inkscape::Selection *selection = sp_desktop_selection(desktop);
460 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
462 // make sure we still have valid objects to move around
463 if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
464 sp_select_context_abort(event_context);
465 }
467 switch (event->type) {
468 case GDK_2BUTTON_PRESS:
469 if (event->button.button == 1) {
470 if (!selection->isEmpty()) {
471 SPItem *clicked_item = (SPItem *) selection->itemList()->data;
472 if (SP_IS_GROUP(clicked_item) && !SP_IS_BOX3D(clicked_item)) { // enter group if it's not a 3D box
473 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
474 sp_desktop_selection(desktop)->clear();
475 sc->dragging = false;
476 sp_event_context_discard_delayed_snap_event(event_context);
478 sp_canvas_end_forced_full_redraws(desktop->canvas);
479 } else { // switch tool
480 Geom::Point const button_pt(event->button.x, event->button.y);
481 Geom::Point const p(desktop->w2d(button_pt));
482 tools_switch_by_item (desktop, clicked_item, p);
483 }
484 } else {
485 sp_select_context_up_one_layer(desktop);
486 }
487 ret = TRUE;
488 }
489 break;
490 case GDK_BUTTON_PRESS:
491 if (event->button.button == 1 && !event_context->space_panning) {
493 // save drag origin
494 xp = (gint) event->button.x;
495 yp = (gint) event->button.y;
496 within_tolerance = true;
498 Geom::Point const button_pt(event->button.x, event->button.y);
499 Geom::Point const p(desktop->w2d(button_pt));
500 if (event->button.state & GDK_MOD1_MASK)
501 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
502 Inkscape::Rubberband::get(desktop)->start(desktop, p);
503 if (sc->grabbed) {
504 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
505 sc->grabbed = NULL;
506 }
507 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
508 GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK,
509 NULL, event->button.time);
510 sc->grabbed = SP_CANVAS_ITEM(desktop->acetate);
512 // remember what modifiers were on before button press
513 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
514 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
515 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
517 sc->moved = FALSE;
519 rb_escaped = drag_escaped = 0;
521 ret = TRUE;
522 } else if (event->button.button == 3) {
523 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
524 sp_select_context_abort(event_context);
525 }
526 break;
528 case GDK_MOTION_NOTIFY:
529 {
530 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
531 if (sc->is_cycling) {
532 // Abort cycle-select
533 NRArenaItem *arenaitem;
534 for (GList *l = sc->cycling_items; l != NULL; l = g_list_next(l)) {
535 arenaitem = item->get_arenaitem(desktop->dkey);
536 nr_arena_item_set_opacity (arenaitem, 1.0);
537 }
538 g_list_free(sc->cycling_items);
539 g_list_free(sc->cycling_items_selected_before);
540 sc->cycling_items = NULL;
541 sc->cycling_cur_item = NULL;
542 sc->is_cycling = false;
543 }
545 tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
546 if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
547 Geom::Point const motion_pt(event->motion.x, event->motion.y);
548 Geom::Point const p(desktop->w2d(motion_pt));
550 if ( within_tolerance
551 && ( abs( (gint) event->motion.x - xp ) < tolerance )
552 && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
553 break; // do not drag if we're within tolerance from origin
554 }
555 // Once the user has moved farther than tolerance from the original location
556 // (indicating they intend to move the object, not click), then always process the
557 // motion notify coordinates as given (no snapping back to origin)
558 within_tolerance = false;
560 if (sc->button_press_ctrl || (sc->button_press_alt && !sc->button_press_shift && !selection->isEmpty())) {
561 // if it's not click and ctrl or alt was pressed (the latter with some selection
562 // but not with shift) we want to drag rather than rubberband
563 sc->dragging = TRUE;
564 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
566 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
567 }
569 if (sc->dragging) {
570 /* User has dragged fast, so we get events on root (lauris)*/
571 // not only that; we will end up here when ctrl-dragging as well
572 // and also when we started within tolerance, but trespassed tolerance outside of item
573 Inkscape::Rubberband::get(desktop)->stop();
574 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
575 item_at_point = desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), FALSE);
576 if (!item_at_point) // if no item at this point, try at the click point (bug 1012200)
577 item_at_point = desktop->getItemAtPoint(Geom::Point(xp, yp), FALSE);
578 if (item_at_point || sc->moved || sc->button_press_alt) {
579 // drag only if starting from an item, or if something is already grabbed, or if alt-dragging
580 if (!sc->moved) {
581 item_in_group = desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), TRUE);
582 group_at_point = desktop->getGroupAtPoint(Geom::Point(event->button.x, event->button.y));
583 if (SP_IS_LAYER(selection->single()))
584 group_at_point = SP_GROUP(selection->single());
586 // group-at-point is meant to be topmost item if it's a group,
587 // not topmost group of all items at point
588 if (group_at_point != item_in_group &&
589 !(group_at_point && item_at_point &&
590 group_at_point->isAncestorOf(item_at_point)))
591 group_at_point = NULL;
593 // if neither a group nor an item (possibly in a group) at point are selected, set selection to the item at point
594 if ((!item_in_group || !selection->includes(item_in_group)) &&
595 (!group_at_point || !selection->includes(group_at_point))
596 && !sc->button_press_alt) {
597 // select what is under cursor
598 if (!seltrans->isEmpty()) {
599 seltrans->resetState();
600 }
601 // when simply ctrl-dragging, we don't want to go into groups
602 if (item_at_point && !selection->includes(item_at_point))
603 selection->set(item_at_point);
604 } // otherwise, do not change selection so that dragging selected-within-group items, as well as alt-dragging, is possible
605 seltrans->grab(p, -1, -1, FALSE, TRUE);
606 sc->moved = TRUE;
607 }
608 if (!seltrans->isEmpty())
609 seltrans->moveTo(p, event->button.state);
610 desktop->scroll_to_point(p);
611 gobble_motion_events(GDK_BUTTON1_MASK);
612 ret = TRUE;
613 } else {
614 sc->dragging = FALSE;
615 sp_event_context_discard_delayed_snap_event(event_context);
616 sp_canvas_end_forced_full_redraws(desktop->canvas);
617 }
618 } else {
619 if (Inkscape::Rubberband::get(desktop)->is_started()) {
620 Inkscape::Rubberband::get(desktop)->move(p);
621 if (Inkscape::Rubberband::get(desktop)->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
622 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> objects to select them; release <b>Alt</b> to switch to rubberband selection"));
623 } else {
624 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag around</b> objects to select them; press <b>Alt</b> to switch to touch selection"));
625 }
626 gobble_motion_events(GDK_BUTTON1_MASK);
627 }
628 }
629 }
630 break;
631 }
632 case GDK_BUTTON_RELEASE:
633 xp = yp = 0;
634 if ((event->button.button == 1) && (sc->grabbed) && !event_context->space_panning) {
635 if (sc->dragging) {
636 if (sc->moved) {
637 // item has been moved
638 seltrans->ungrab();
639 sc->moved = FALSE;
640 } else if (sc->item && !drag_escaped) {
641 // item has not been moved -> simply a click, do selecting
642 if (!selection->isEmpty()) {
643 if (event->button.state & GDK_SHIFT_MASK) {
644 // with shift, toggle selection
645 seltrans->resetState();
646 selection->toggle(sc->item);
647 } else {
648 SPObject* single = selection->single();
649 // without shift, increase state (i.e. toggle scale/rotation handles)
650 if (selection->includes(sc->item)) {
651 seltrans->increaseState();
652 } else if (SP_IS_LAYER(single) && single->isAncestorOf(sc->item)) {
653 seltrans->increaseState();
654 } else {
655 seltrans->resetState();
656 selection->set(sc->item);
657 }
658 }
659 } else { // simple or shift click, no previous selection
660 seltrans->resetState();
661 selection->set(sc->item);
662 }
663 }
664 sc->dragging = FALSE;
665 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectMouseover);
666 sp_event_context_discard_delayed_snap_event(event_context);
667 sp_canvas_end_forced_full_redraws(desktop->canvas);
669 if (sc->item) {
670 sp_object_unref( SP_OBJECT(sc->item), NULL);
671 }
672 sc->item = NULL;
673 } else {
674 Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop);
675 if (r->is_started() && !within_tolerance) {
676 // this was a rubberband drag
677 GSList *items = NULL;
678 if (r->getMode() == RUBBERBAND_MODE_RECT) {
679 Geom::OptRect const b = r->getRectangle();
680 items = sp_desktop_document(desktop)->getItemsInBox(desktop->dkey, *b);
681 } else if (r->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
682 items = sp_desktop_document(desktop)->getItemsAtPoints(desktop->dkey, r->getPoints());
683 }
685 seltrans->resetState();
686 r->stop();
687 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
689 if (event->button.state & GDK_SHIFT_MASK) {
690 // with shift, add to selection
691 selection->addList (items);
692 } else {
693 // without shift, simply select anew
694 selection->setList (items);
695 }
696 g_slist_free (items);
697 } else { // it was just a click, or a too small rubberband
698 r->stop();
699 if (sc->button_press_shift && !rb_escaped && !drag_escaped) {
700 // this was a shift+click or alt+shift+click, select what was clicked upon
702 sc->button_press_shift = false;
704 if (sc->button_press_ctrl) {
705 // go into groups, honoring Alt
706 item = sp_event_context_find_item (desktop,
707 Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);
708 sc->button_press_ctrl = FALSE;
709 } else {
710 // don't go into groups, honoring Alt
711 item = sp_event_context_find_item (desktop,
712 Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
713 }
715 if (item) {
716 selection->toggle(item);
717 item = NULL;
718 }
720 } else if ((sc->button_press_ctrl || sc->button_press_alt) && !rb_escaped && !drag_escaped) { // ctrl+click, alt+click
722 item = sp_event_context_find_item (desktop,
723 Geom::Point(event->button.x, event->button.y), sc->button_press_alt, sc->button_press_ctrl);
725 sc->button_press_ctrl = FALSE;
726 sc->button_press_alt = FALSE;
728 if (item) {
729 if (selection->includes(item)) {
730 seltrans->increaseState();
731 } else {
732 seltrans->resetState();
733 selection->set(item);
734 }
735 item = NULL;
736 }
738 } else { // click without shift, simply deselect, unless with Alt or something was cancelled
739 if (!selection->isEmpty()) {
740 if (!(rb_escaped) && !(drag_escaped) && !(event->button.state & GDK_MOD1_MASK))
741 selection->clear();
742 rb_escaped = 0;
743 ret = TRUE;
744 }
745 }
746 }
747 ret = TRUE;
748 }
749 if (sc->grabbed) {
750 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
751 sc->grabbed = NULL;
752 }
754 desktop->updateNow();
755 }
756 if (event->button.button == 1) {
757 Inkscape::Rubberband::get(desktop)->stop(); // might have been started in another tool!
758 }
759 sc->button_press_shift = false;
760 sc->button_press_ctrl = false;
761 sc->button_press_alt = false;
762 break;
764 case GDK_SCROLL:
765 {
766 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
767 GdkEventScroll *scroll_event = (GdkEventScroll*) event;
769 if (scroll_event->state & GDK_MOD1_MASK) { // alt modified pressed
770 bool shift_pressed = scroll_event->state & GDK_SHIFT_MASK;
772 if(sc->is_cycling == false) {
773 // Build a list of items underneath the mouse pointer (for cycle-selection) and reduce their opacity
774 Geom::Point p = desktop->d2w(desktop->point());
775 SPItem *item = desktop->getItemAtPoint(p, true, NULL);
776 while(item != NULL) {
777 sc->cycling_items = g_list_append(sc->cycling_items, item);
778 if (selection->includes(item)) {
779 // already selected items are stored separately, too
780 sc->cycling_items_selected_before = g_list_append(sc->cycling_items_selected_before, item);
781 }
782 NRArenaItem *arenaitem = item->get_arenaitem(desktop->dkey);
783 nr_arena_item_set_opacity (arenaitem, 0.3);
785 item = desktop->getItemAtPoint(p, true, item);
786 }
787 // Here we set the current item to the bottommost one so that the cycling step below re-starts at the top
788 sc->cycling_cur_item = g_list_last(sc->cycling_items);
789 sc->is_cycling = true;
790 }
792 // Cycle through the items underneath the mouse pointer, one-by-one
793 sp_select_context_cycle_through_items(sc, selection, scroll_event, shift_pressed);
795 ret = TRUE;
796 }
797 break;
798 }
800 case GDK_KEY_PRESS: // keybindings for select context
802 {
803 {
804 guint keyval = get_group0_keyval(&event->key);
805 bool alt = ( MOD__ALT
806 || (keyval == GDK_Alt_L)
807 || (keyval == GDK_Alt_R)
808 || (keyval == GDK_Meta_L)
809 || (keyval == GDK_Meta_R));
811 if (!key_is_a_modifier (keyval)) {
812 event_context->defaultMessageContext()->clear();
813 } else if (sc->grabbed || seltrans->isGrabbed()) {
814 if (Inkscape::Rubberband::get(desktop)->is_started()) {
815 // if Alt then change cursor to moving cursor:
816 if (alt) {
817 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
818 }
819 } else {
820 // do not change the statusbar text when mousekey is down to move or transform the object,
821 // because the statusbar text is already updated somewhere else.
822 break;
823 }
824 } else {
825 sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,
826 _("<b>Ctrl</b>: click to select in groups; drag to move hor/vert"),
827 _("<b>Shift</b>: click to toggle select; drag for rubberband selection"),
828 _("<b>Alt</b>: click to select under; scroll mouse-wheel to cycle-select; drag to move selected or select by touch"));
829 // if Alt and nonempty selection, show moving cursor ("move selected"):
830 if (alt && !selection->isEmpty() && !desktop->isWaitingCursor()) {
831 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
832 }
833 //*/
834 break;
835 }
836 }
838 gdouble const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px
839 gdouble const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000);
840 int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
842 switch (get_group0_keyval (&event->key)) {
843 case GDK_Left: // move selection left
844 case GDK_KP_Left:
845 case GDK_KP_4:
846 if (!MOD__CTRL) { // not ctrl
847 gint mul = 1 + gobble_key_events(
848 get_group0_keyval(&event->key), 0); // with any mask
849 if (MOD__ALT) { // alt
850 if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*-10, 0); // shift
851 else sp_selection_move_screen(desktop, mul*-1, 0); // no shift
852 }
853 else { // no alt
854 if (MOD__SHIFT) sp_selection_move(desktop, mul*-10*nudge, 0); // shift
855 else sp_selection_move(desktop, mul*-nudge, 0); // no shift
856 }
857 ret = TRUE;
858 }
859 break;
860 case GDK_Up: // move selection up
861 case GDK_KP_Up:
862 case GDK_KP_8:
863 if (!MOD__CTRL) { // not ctrl
864 gint mul = 1 + gobble_key_events(
865 get_group0_keyval(&event->key), 0); // with any mask
866 if (MOD__ALT) { // alt
867 if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*10); // shift
868 else sp_selection_move_screen(desktop, 0, mul*1); // no shift
869 }
870 else { // no alt
871 if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*10*nudge); // shift
872 else sp_selection_move(desktop, 0, mul*nudge); // no shift
873 }
874 ret = TRUE;
875 }
876 break;
877 case GDK_Right: // move selection right
878 case GDK_KP_Right:
879 case GDK_KP_6:
880 if (!MOD__CTRL) { // not ctrl
881 gint mul = 1 + gobble_key_events(
882 get_group0_keyval(&event->key), 0); // with any mask
883 if (MOD__ALT) { // alt
884 if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*10, 0); // shift
885 else sp_selection_move_screen(desktop, mul*1, 0); // no shift
886 }
887 else { // no alt
888 if (MOD__SHIFT) sp_selection_move(desktop, mul*10*nudge, 0); // shift
889 else sp_selection_move(desktop, mul*nudge, 0); // no shift
890 }
891 ret = TRUE;
892 }
893 break;
894 case GDK_Down: // move selection down
895 case GDK_KP_Down:
896 case GDK_KP_2:
897 if (!MOD__CTRL) { // not ctrl
898 gint mul = 1 + gobble_key_events(
899 get_group0_keyval(&event->key), 0); // with any mask
900 if (MOD__ALT) { // alt
901 if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*-10); // shift
902 else sp_selection_move_screen(desktop, 0, mul*-1); // no shift
903 }
904 else { // no alt
905 if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*-10*nudge); // shift
906 else sp_selection_move(desktop, 0, mul*-nudge); // no shift
907 }
908 ret = TRUE;
909 }
910 break;
911 case GDK_Escape:
912 if (!sp_select_context_abort(event_context))
913 selection->clear();
914 ret = TRUE;
915 break;
917 case GDK_a:
918 case GDK_A:
919 if (MOD__CTRL_ONLY) {
920 sp_edit_select_all(desktop);
921 ret = TRUE;
922 }
923 break;
924 case GDK_space:
925 /* stamping mode: show outline mode moving */
926 /* FIXME: Is next condition ok? (lauris) */
927 if (sc->dragging && sc->grabbed) {
928 seltrans->stamp();
929 ret = TRUE;
930 }
931 break;
932 case GDK_x:
933 case GDK_X:
934 if (MOD__ALT_ONLY) {
935 desktop->setToolboxFocusTo ("altx");
936 ret = TRUE;
937 }
938 break;
939 case GDK_bracketleft:
940 if (MOD__ALT) {
941 gint mul = 1 + gobble_key_events(
942 get_group0_keyval(&event->key), 0); // with any mask
943 sp_selection_rotate_screen(selection, mul*1);
944 } else if (MOD__CTRL) {
945 sp_selection_rotate(selection, 90);
946 } else if (snaps) {
947 sp_selection_rotate(selection, 180/snaps);
948 }
949 ret = TRUE;
950 break;
951 case GDK_bracketright:
952 if (MOD__ALT) {
953 gint mul = 1 + gobble_key_events(
954 get_group0_keyval(&event->key), 0); // with any mask
955 sp_selection_rotate_screen(selection, -1*mul);
956 } else if (MOD__CTRL) {
957 sp_selection_rotate(selection, -90);
958 } else if (snaps) {
959 sp_selection_rotate(selection, -180/snaps);
960 }
961 ret = TRUE;
962 break;
963 case GDK_less:
964 case GDK_comma:
965 if (MOD__ALT) {
966 gint mul = 1 + gobble_key_events(
967 get_group0_keyval(&event->key), 0); // with any mask
968 sp_selection_scale_screen(selection, -2*mul);
969 } else if (MOD__CTRL) {
970 sp_selection_scale_times(selection, 0.5);
971 } else {
972 gint mul = 1 + gobble_key_events(
973 get_group0_keyval(&event->key), 0); // with any mask
974 sp_selection_scale(selection, -offset*mul);
975 }
976 ret = TRUE;
977 break;
978 case GDK_greater:
979 case GDK_period:
980 if (MOD__ALT) {
981 gint mul = 1 + gobble_key_events(
982 get_group0_keyval(&event->key), 0); // with any mask
983 sp_selection_scale_screen(selection, 2*mul);
984 } else if (MOD__CTRL) {
985 sp_selection_scale_times(selection, 2);
986 } else {
987 gint mul = 1 + gobble_key_events(
988 get_group0_keyval(&event->key), 0); // with any mask
989 sp_selection_scale(selection, offset*mul);
990 }
991 ret = TRUE;
992 break;
993 case GDK_Return:
994 if (MOD__CTRL_ONLY) {
995 if (selection->singleItem()) {
996 SPItem *clicked_item = selection->singleItem();
997 if ( SP_IS_GROUP(clicked_item) ||
998 SP_IS_BOX3D(clicked_item)) { // enter group or a 3D box
999 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
1000 sp_desktop_selection(desktop)->clear();
1001 } else {
1002 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));
1003 }
1004 }
1005 ret = TRUE;
1006 }
1007 break;
1008 case GDK_BackSpace:
1009 if (MOD__CTRL_ONLY) {
1010 sp_select_context_up_one_layer(desktop);
1011 ret = TRUE;
1012 }
1013 break;
1014 case GDK_s:
1015 case GDK_S:
1016 if (MOD__SHIFT_ONLY) {
1017 if (!selection->isEmpty()) {
1018 seltrans->increaseState();
1019 }
1020 ret = TRUE;
1021 }
1022 break;
1023 case GDK_g:
1024 case GDK_G:
1025 if (MOD__SHIFT_ONLY) {
1026 sp_selection_to_guides(desktop);
1027 ret = true;
1028 }
1029 break;
1030 default:
1031 break;
1032 }
1033 break;
1034 }
1035 case GDK_KEY_RELEASE:
1036 {
1037 guint keyval = get_group0_keyval(&event->key);
1038 if (key_is_a_modifier (keyval))
1039 event_context->defaultMessageContext()->clear();
1041 bool alt = ( MOD__ALT
1042 || (keyval == GDK_Alt_L)
1043 || (keyval == GDK_Alt_R)
1044 || (keyval == GDK_Meta_L)
1045 || (keyval == GDK_Meta_R));
1047 if (Inkscape::Rubberband::get(desktop)->is_started()) {
1048 // if Alt then change cursor to moving cursor:
1049 if (alt) {
1050 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_RECT);
1051 }
1052 } else {
1053 if (alt && sc->is_cycling) {
1054 // quit cycle-selection and reset opacities
1055 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
1056 NRArenaItem *arenaitem;
1057 for (GList *l = sc->cycling_items; l != NULL; l = g_list_next(l)) {
1058 arenaitem = SP_ITEM(l->data)->get_arenaitem(desktop->dkey);
1059 nr_arena_item_set_opacity (arenaitem, 1.0);
1060 }
1061 g_list_free(sc->cycling_items);
1062 g_list_free(sc->cycling_items_selected_before);
1063 sc->cycling_items = NULL;
1064 sc->cycling_items_selected_before = NULL;
1065 sc->cycling_cur_item = NULL;
1066 sc->is_cycling = false;
1067 }
1068 }
1070 }
1071 // set cursor to default.
1072 if (!desktop->isWaitingCursor()) {
1073 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
1074 }
1075 break;
1076 default:
1077 break;
1078 }
1080 if (!ret) {
1081 if (((SPEventContextClass *) parent_class)->root_handler)
1082 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
1083 }
1085 return ret;
1086 }
1089 /*
1090 Local Variables:
1091 mode:c++
1092 c-file-style:"stroustrup"
1093 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1094 indent-tabs-mode:nil
1095 fill-column:99
1096 End:
1097 */
1098 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :