1 #define __SP_SELECT_CONTEXT_C__
3 /*
4 * Selection and transformation context
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 *
10 * Copyright (C) 2006 Johan Engelen <johan@shouraizou.nl>
11 * Copyright (C) 1999-2005 Authors
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 #ifdef HAVE_CONFIG_H
17 # include "config.h"
18 #endif
19 #include <cstring>
20 #include <string>
21 #include <gdk/gdkkeysyms.h>
22 #include "macros.h"
23 #include "rubberband.h"
24 #include "document.h"
25 #include "selection.h"
26 #include "seltrans-handles.h"
27 #include "sp-cursor.h"
28 #include "pixmaps/cursor-select-m.xpm"
29 #include "pixmaps/cursor-select-d.xpm"
30 #include "pixmaps/handles.xpm"
31 #include <glibmm/i18n.h>
33 #include "select-context.h"
34 #include "selection-chemistry.h"
35 #include "desktop.h"
36 #include "desktop-handles.h"
37 #include "sp-root.h"
38 #include "preferences.h"
39 #include "tools-switch.h"
40 #include "message-stack.h"
41 #include "selection-describer.h"
42 #include "seltrans.h"
43 #include "box3d.h"
45 static void sp_select_context_class_init(SPSelectContextClass *klass);
46 static void sp_select_context_init(SPSelectContext *select_context);
47 static void sp_select_context_dispose(GObject *object);
49 static void sp_select_context_setup(SPEventContext *ec);
50 static void sp_select_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val);
51 static gint sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event);
52 static gint sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
54 static SPEventContextClass *parent_class;
56 static GdkCursor *CursorSelectMouseover = NULL;
57 static GdkCursor *CursorSelectDragging = NULL;
58 GdkPixbuf *handles[13];
60 static gint rb_escaped = 0; // if non-zero, rubberband was canceled by esc, so the next button release should not deselect
61 static gint drag_escaped = 0; // if non-zero, drag was canceled by esc
63 static gint xp = 0, yp = 0; // where drag started
64 static gint tolerance = 0;
65 static bool within_tolerance = false;
67 GtkType
68 sp_select_context_get_type(void)
69 {
70 static GType type = 0;
71 if (!type) {
72 GTypeInfo info = {
73 sizeof(SPSelectContextClass),
74 NULL, NULL,
75 (GClassInitFunc) sp_select_context_class_init,
76 NULL, NULL,
77 sizeof(SPSelectContext),
78 4,
79 (GInstanceInitFunc) sp_select_context_init,
80 NULL, /* value_table */
81 };
82 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPSelectContext", &info, (GTypeFlags)0);
83 }
84 return type;
85 }
87 static void
88 sp_select_context_class_init(SPSelectContextClass *klass)
89 {
90 GObjectClass *object_class = (GObjectClass *) klass;
91 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
93 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
95 object_class->dispose = sp_select_context_dispose;
97 event_context_class->setup = sp_select_context_setup;
98 event_context_class->set = sp_select_context_set;
99 event_context_class->root_handler = sp_select_context_root_handler;
100 event_context_class->item_handler = sp_select_context_item_handler;
102 // cursors in select context
103 CursorSelectMouseover = sp_cursor_new_from_xpm(cursor_select_m_xpm , 1, 1);
104 CursorSelectDragging = sp_cursor_new_from_xpm(cursor_select_d_xpm , 1, 1);
105 // selection handles
106 handles[0] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_nw_xpm);
107 handles[1] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_ne_xpm);
108 handles[2] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_h_xpm);
109 handles[3] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_v_xpm);
110 handles[4] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_nw_xpm);
111 handles[5] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_n_xpm);
112 handles[6] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_ne_xpm);
113 handles[7] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_e_xpm);
114 handles[8] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_se_xpm);
115 handles[9] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_s_xpm);
116 handles[10] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_sw_xpm);
117 handles[11] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_w_xpm);
118 handles[12] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_center_xpm);
120 }
122 static void
123 sp_select_context_init(SPSelectContext *sc)
124 {
125 sc->dragging = FALSE;
126 sc->moved = FALSE;
127 sc->button_press_shift = false;
128 sc->button_press_ctrl = false;
129 sc->button_press_alt = false;
130 sc->_seltrans = NULL;
131 sc->_describer = NULL;
132 }
134 static void
135 sp_select_context_dispose(GObject *object)
136 {
137 SPSelectContext *sc = SP_SELECT_CONTEXT(object);
138 SPEventContext * ec = SP_EVENT_CONTEXT (object);
140 ec->enableGrDrag(false);
142 if (sc->grabbed) {
143 sp_canvas_item_ungrab(sc->grabbed, GDK_CURRENT_TIME);
144 sc->grabbed = NULL;
145 }
147 delete sc->_seltrans;
148 sc->_seltrans = NULL;
149 delete sc->_describer;
150 sc->_describer = NULL;
152 if (CursorSelectDragging) {
153 gdk_cursor_unref (CursorSelectDragging);
154 CursorSelectDragging = NULL;
155 }
156 if (CursorSelectMouseover) {
157 gdk_cursor_unref (CursorSelectMouseover);
158 CursorSelectMouseover = NULL;
159 }
161 G_OBJECT_CLASS(parent_class)->dispose(object);
162 }
164 static void
165 sp_select_context_setup(SPEventContext *ec)
166 {
167 SPSelectContext *select_context = SP_SELECT_CONTEXT(ec);
169 if (((SPEventContextClass *) parent_class)->setup) {
170 ((SPEventContextClass *) parent_class)->setup(ec);
171 }
173 SPDesktop *desktop = ec->desktop;
175 select_context->_describer = new Inkscape::SelectionDescriber(desktop->selection, desktop->messageStack());
177 select_context->_seltrans = new Inkscape::SelTrans(desktop);
179 sp_event_context_read(ec, "show");
180 sp_event_context_read(ec, "transform");
182 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
183 if (prefs->getBool("/tools/select/gradientdrag")) {
184 ec->enableGrDrag();
185 }
186 }
188 static void
189 sp_select_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val)
190 {
191 SPSelectContext *sc = SP_SELECT_CONTEXT(ec);
192 Glib::ustring path = val->getEntryName();
194 if (path == "show") {
195 if (val->getString() == "outline") {
196 sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_OUTLINE);
197 } else {
198 sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_CONTENT);
199 }
200 }
201 }
203 static bool
204 sp_select_context_abort(SPEventContext *event_context)
205 {
206 SPDesktop *desktop = event_context->desktop;
207 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
208 Inkscape::SelTrans *seltrans = sc->_seltrans;
210 if (sc->dragging) {
211 if (sc->moved) { // cancel dragging an object
212 seltrans->ungrab();
213 sc->moved = FALSE;
214 sc->dragging = FALSE;
215 drag_escaped = 1;
217 if (sc->item) {
218 // only undo if the item is still valid
219 if (SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))) {
220 sp_document_undo(sp_desktop_document(desktop));
221 }
223 sp_object_unref( SP_OBJECT(sc->item), NULL);
224 } else if (sc->button_press_ctrl) {
225 // NOTE: This is a workaround to a bug.
226 // When the ctrl key is held, sc->item is not defined
227 // so in this case (only), we skip the object doc check
228 sp_document_undo(sp_desktop_document(desktop));
229 }
230 sc->item = NULL;
232 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));
233 return true;
234 }
235 } else {
236 if (Inkscape::Rubberband::get(desktop)->is_started()) {
237 Inkscape::Rubberband::get(desktop)->stop();
238 rb_escaped = 1;
239 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
240 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));
241 return true;
242 }
243 }
244 return false;
245 }
247 bool
248 key_is_a_modifier (guint key) {
249 return (key == GDK_Alt_L ||
250 key == GDK_Alt_R ||
251 key == GDK_Control_L ||
252 key == GDK_Control_R ||
253 key == GDK_Shift_L ||
254 key == GDK_Shift_R ||
255 key == GDK_Meta_L || // Meta is when you press Shift+Alt (at least on my machine)
256 key == GDK_Meta_R);
257 }
259 void
260 sp_select_context_up_one_layer(SPDesktop *desktop)
261 {
262 /* Click in empty place, go up one level -- but don't leave a layer to root.
263 *
264 * (Rationale: we don't usually allow users to go to the root, since that
265 * detracts from the layer metaphor: objects at the root level can in front
266 * of or behind layers. Whereas it's fine to go to the root if editing
267 * a document that has no layers (e.g. a non-Inkscape document).)
268 *
269 * Once we support editing SVG "islands" (e.g. <svg> embedded in an xhtml
270 * document), we might consider further restricting the below to disallow
271 * leaving a layer to go to a non-layer.
272 */
273 SPObject *const current_layer = desktop->currentLayer();
274 if (current_layer) {
275 SPObject *const parent = SP_OBJECT_PARENT(current_layer);
276 if ( parent
277 && ( SP_OBJECT_PARENT(parent)
278 || !( SP_IS_GROUP(current_layer)
279 && ( SPGroup::LAYER
280 == SP_GROUP(current_layer)->layerMode() ) ) ) )
281 {
282 desktop->setCurrentLayer(parent);
283 if (SP_IS_GROUP(current_layer) && SPGroup::LAYER != SP_GROUP(current_layer)->layerMode())
284 sp_desktop_selection(desktop)->set(current_layer);
285 }
286 }
287 }
289 static gint
290 sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
291 {
292 gint ret = FALSE;
294 SPDesktop *desktop = event_context->desktop;
295 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
296 Inkscape::SelTrans *seltrans = sc->_seltrans;
298 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
299 tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
301 // make sure we still have valid objects to move around
302 if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
303 sp_select_context_abort(event_context);
304 }
306 switch (event->type) {
307 case GDK_BUTTON_PRESS:
308 if (event->button.button == 1 && !event_context->space_panning) {
309 /* Left mousebutton */
311 // save drag origin
312 xp = (gint) event->button.x;
313 yp = (gint) event->button.y;
314 within_tolerance = true;
316 // remember what modifiers were on before button press
317 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
318 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
319 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
321 if (event->button.state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK)) {
322 // if shift or ctrl was pressed, do not move objects;
323 // pass the event to root handler which will perform rubberband, shift-click, ctrl-click, ctrl-drag
324 } else {
325 sc->dragging = TRUE;
326 sc->moved = FALSE;
328 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
330 // remember the clicked item in sc->item:
331 if (sc->item) {
332 sp_object_unref(sc->item, NULL);
333 sc->item = NULL;
334 }
335 sc->item = sp_event_context_find_item (desktop,
336 Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
337 sp_object_ref(sc->item, NULL);
339 rb_escaped = drag_escaped = 0;
341 if (sc->grabbed) {
342 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
343 sc->grabbed = NULL;
344 }
345 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->drawing),
346 GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
347 GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK,
348 NULL, event->button.time);
349 sc->grabbed = SP_CANVAS_ITEM(desktop->drawing);
351 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
353 ret = TRUE;
354 }
355 } else if (event->button.button == 3) {
356 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
357 sp_select_context_abort(event_context);
358 }
359 break;
361 case GDK_ENTER_NOTIFY:
362 {
363 if (!desktop->isWaitingCursor()) {
364 GdkCursor *cursor = gdk_cursor_new(GDK_FLEUR);
365 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, cursor);
366 gdk_cursor_destroy(cursor);
367 }
368 break;
369 }
371 case GDK_LEAVE_NOTIFY:
372 if (!desktop->isWaitingCursor())
373 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
374 break;
376 case GDK_KEY_PRESS:
377 if (get_group0_keyval (&event->key) == GDK_space) {
378 if (sc->dragging && sc->grabbed) {
379 /* stamping mode: show content mode moving */
380 seltrans->stamp();
381 ret = TRUE;
382 }
383 }
384 break;
386 default:
387 break;
388 }
390 if (!ret) {
391 if (((SPEventContextClass *) parent_class)->item_handler)
392 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
393 }
395 return ret;
396 }
398 static gint
399 sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event)
400 {
401 SPItem *item = NULL;
402 SPItem *item_at_point = NULL, *group_at_point = NULL, *item_in_group = NULL;
403 gint ret = FALSE;
405 SPDesktop *desktop = event_context->desktop;
406 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
407 Inkscape::SelTrans *seltrans = sc->_seltrans;
408 Inkscape::Selection *selection = sp_desktop_selection(desktop);
409 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
411 gdouble const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px
412 gdouble const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000);
413 tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
414 int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
416 // make sure we still have valid objects to move around
417 if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
418 sp_select_context_abort(event_context);
419 }
421 switch (event->type) {
422 case GDK_2BUTTON_PRESS:
423 if (event->button.button == 1) {
424 if (!selection->isEmpty()) {
425 SPItem *clicked_item = (SPItem *) selection->itemList()->data;
426 if (SP_IS_GROUP(clicked_item) && !SP_IS_BOX3D(clicked_item)) { // enter group if it's not a 3D box
427 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
428 sp_desktop_selection(desktop)->clear();
429 sc->dragging = false;
431 sp_canvas_end_forced_full_redraws(desktop->canvas);
432 } else { // switch tool
433 Geom::Point const button_pt(event->button.x, event->button.y);
434 Geom::Point const p(desktop->w2d(button_pt));
435 tools_switch_by_item (desktop, clicked_item, p);
436 }
437 } else {
438 sp_select_context_up_one_layer(desktop);
439 }
440 ret = TRUE;
441 }
442 break;
443 case GDK_BUTTON_PRESS:
444 if (event->button.button == 1 && !event_context->space_panning) {
446 // save drag origin
447 xp = (gint) event->button.x;
448 yp = (gint) event->button.y;
449 within_tolerance = true;
451 Geom::Point const button_pt(event->button.x, event->button.y);
452 Geom::Point const p(desktop->w2d(button_pt));
453 if (event->button.state & GDK_MOD1_MASK)
454 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
455 Inkscape::Rubberband::get(desktop)->start(desktop, p);
456 if (sc->grabbed) {
457 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
458 sc->grabbed = NULL;
459 }
460 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
461 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,
462 NULL, event->button.time);
463 sc->grabbed = SP_CANVAS_ITEM(desktop->acetate);
465 // remember what modifiers were on before button press
466 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
467 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
468 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
470 sc->moved = FALSE;
472 rb_escaped = drag_escaped = 0;
474 ret = TRUE;
475 } else if (event->button.button == 3) {
476 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
477 sp_select_context_abort(event_context);
478 }
479 break;
481 case GDK_MOTION_NOTIFY:
482 if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
483 Geom::Point const motion_pt(event->motion.x, event->motion.y);
484 Geom::Point const p(desktop->w2d(motion_pt));
486 if ( within_tolerance
487 && ( abs( (gint) event->motion.x - xp ) < tolerance )
488 && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
489 break; // do not drag if we're within tolerance from origin
490 }
491 // Once the user has moved farther than tolerance from the original location
492 // (indicating they intend to move the object, not click), then always process the
493 // motion notify coordinates as given (no snapping back to origin)
494 within_tolerance = false;
496 if (sc->button_press_ctrl || (sc->button_press_alt && !sc->button_press_shift && !selection->isEmpty())) {
497 // if it's not click and ctrl or alt was pressed (the latter with some selection
498 // but not with shift) we want to drag rather than rubberband
499 sc->dragging = TRUE;
501 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
502 }
504 if (sc->dragging) {
505 /* User has dragged fast, so we get events on root (lauris)*/
506 // not only that; we will end up here when ctrl-dragging as well
507 // and also when we started within tolerance, but trespassed tolerance outside of item
508 Inkscape::Rubberband::get(desktop)->stop();
509 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
510 item_at_point = desktop->item_at_point(Geom::Point(event->button.x, event->button.y), FALSE);
511 if (!item_at_point) // if no item at this point, try at the click point (bug 1012200)
512 item_at_point = desktop->item_at_point(Geom::Point(xp, yp), FALSE);
513 if (item_at_point || sc->moved || sc->button_press_alt) {
514 // drag only if starting from an item, or if something is already grabbed, or if alt-dragging
515 if (!sc->moved) {
516 item_in_group = desktop->item_at_point(Geom::Point(event->button.x, event->button.y), TRUE);
517 group_at_point = desktop->group_at_point(Geom::Point(event->button.x, event->button.y));
518 if (SP_IS_LAYER(selection->single()))
519 group_at_point = SP_GROUP(selection->single());
521 // group-at-point is meant to be topmost item if it's a group,
522 // not topmost group of all items at point
523 if (group_at_point != item_in_group &&
524 !(group_at_point && item_at_point &&
525 group_at_point->isAncestorOf(item_at_point)))
526 group_at_point = NULL;
528 // if neither a group nor an item (possibly in a group) at point are selected, set selection to the item at point
529 if ((!item_in_group || !selection->includes(item_in_group)) &&
530 (!group_at_point || !selection->includes(group_at_point))
531 && !sc->button_press_alt) {
532 // select what is under cursor
533 if (!seltrans->isEmpty()) {
534 seltrans->resetState();
535 }
536 // when simply ctrl-dragging, we don't want to go into groups
537 if (item_at_point && !selection->includes(item_at_point))
538 selection->set(item_at_point);
539 } // otherwise, do not change selection so that dragging selected-within-group items, as well as alt-dragging, is possible
540 seltrans->grab(p, -1, -1, FALSE);
541 sc->moved = TRUE;
542 }
543 if (!seltrans->isEmpty())
544 seltrans->moveTo(p, event->button.state);
545 desktop->scroll_to_point(p);
546 gobble_motion_events(GDK_BUTTON1_MASK);
547 ret = TRUE;
548 } else {
549 sc->dragging = FALSE;
551 sp_canvas_end_forced_full_redraws(desktop->canvas);
552 }
553 } else {
554 if (Inkscape::Rubberband::get(desktop)->is_started()) {
555 Inkscape::Rubberband::get(desktop)->move(p);
556 if (Inkscape::Rubberband::get(desktop)->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
557 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> objects to select them; release <b>Alt</b> to switch to rubberband selection"));
558 } else {
559 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag around</b> objects to select them; press <b>Alt</b> to switch to touch selection"));
560 }
561 gobble_motion_events(GDK_BUTTON1_MASK);
562 }
563 }
564 }
565 break;
566 case GDK_BUTTON_RELEASE:
567 xp = yp = 0;
568 if ((event->button.button == 1) && (sc->grabbed) && !event_context->space_panning) {
569 if (sc->dragging) {
570 if (sc->moved) {
571 // item has been moved
572 seltrans->ungrab();
573 sc->moved = FALSE;
574 } else if (sc->item && !drag_escaped) {
575 // item has not been moved -> simply a click, do selecting
576 if (!selection->isEmpty()) {
577 if (event->button.state & GDK_SHIFT_MASK) {
578 // with shift, toggle selection
579 seltrans->resetState();
580 selection->toggle(sc->item);
581 } else {
582 SPObject* single = selection->single();
583 // without shift, increase state (i.e. toggle scale/rotation handles)
584 if (selection->includes(sc->item)) {
585 seltrans->increaseState();
586 } else if (SP_IS_LAYER(single) && single->isAncestorOf(sc->item)) {
587 seltrans->increaseState();
588 } else {
589 seltrans->resetState();
590 selection->set(sc->item);
591 }
592 }
593 } else { // simple or shift click, no previous selection
594 seltrans->resetState();
595 selection->set(sc->item);
596 }
597 }
598 sc->dragging = FALSE;
600 sp_canvas_end_forced_full_redraws(desktop->canvas);
602 if (sc->item) {
603 sp_object_unref( SP_OBJECT(sc->item), NULL);
604 }
605 sc->item = NULL;
606 } else {
607 Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get(desktop);
608 if (r->is_started() && !within_tolerance) {
609 // this was a rubberband drag
610 GSList *items = NULL;
611 if (r->getMode() == RUBBERBAND_MODE_RECT) {
612 Geom::OptRect const b = r->getRectangle();
613 items = sp_document_items_in_box(sp_desktop_document(desktop), desktop->dkey, *b);
614 } else if (r->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
615 items = sp_document_items_at_points(sp_desktop_document(desktop), desktop->dkey, r->getPoints());
616 }
618 seltrans->resetState();
619 r->stop();
620 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
622 if (event->button.state & GDK_SHIFT_MASK) {
623 // with shift, add to selection
624 selection->addList (items);
625 } else {
626 // without shift, simply select anew
627 selection->setList (items);
628 }
629 g_slist_free (items);
630 } else { // it was just a click, or a too small rubberband
631 r->stop();
632 if (sc->button_press_shift && !rb_escaped && !drag_escaped) {
633 // this was a shift+click or alt+shift+click, select what was clicked upon
635 sc->button_press_shift = false;
637 if (sc->button_press_ctrl) {
638 // go into groups, honoring Alt
639 item = sp_event_context_find_item (desktop,
640 Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);
641 sc->button_press_ctrl = FALSE;
642 } else {
643 // don't go into groups, honoring Alt
644 item = sp_event_context_find_item (desktop,
645 Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
646 }
648 if (item) {
649 selection->toggle(item);
650 item = NULL;
651 }
653 } else if ((sc->button_press_ctrl || sc->button_press_alt) && !rb_escaped && !drag_escaped) { // ctrl+click, alt+click
655 item = sp_event_context_find_item (desktop,
656 Geom::Point(event->button.x, event->button.y), sc->button_press_alt, sc->button_press_ctrl);
658 sc->button_press_ctrl = FALSE;
659 sc->button_press_alt = FALSE;
661 if (item) {
662 if (selection->includes(item)) {
663 seltrans->increaseState();
664 } else {
665 seltrans->resetState();
666 selection->set(item);
667 }
668 item = NULL;
669 }
671 } else { // click without shift, simply deselect, unless with Alt or something was cancelled
672 if (!selection->isEmpty()) {
673 if (!(rb_escaped) && !(drag_escaped) && !(event->button.state & GDK_MOD1_MASK))
674 selection->clear();
675 rb_escaped = 0;
676 ret = TRUE;
677 }
678 }
679 }
680 ret = TRUE;
681 }
682 if (sc->grabbed) {
683 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
684 sc->grabbed = NULL;
685 }
687 desktop->updateNow();
688 }
689 if (event->button.button == 1) {
690 Inkscape::Rubberband::get(desktop)->stop(); // might have been started in another tool!
691 }
692 sc->button_press_shift = false;
693 sc->button_press_ctrl = false;
694 sc->button_press_alt = false;
695 break;
697 case GDK_KEY_PRESS: // keybindings for select context
699 {
700 guint keyval = get_group0_keyval(&event->key);
701 bool alt = ( MOD__ALT
702 || (keyval == GDK_Alt_L)
703 || (keyval == GDK_Alt_R)
704 || (keyval == GDK_Meta_L)
705 || (keyval == GDK_Meta_R));
707 if (!key_is_a_modifier (keyval)) {
708 event_context->defaultMessageContext()->clear();
709 } else if (sc->grabbed || seltrans->isGrabbed()) {
710 if (Inkscape::Rubberband::get(desktop)->is_started()) {
711 // if Alt then change cursor to moving cursor:
712 if (alt) {
713 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
714 }
715 } else {
716 // do not change the statusbar text when mousekey is down to move or transform the object,
717 // because the statusbar text is already updated somewhere else.
718 break;
719 }
720 } else {
721 sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,
722 _("<b>Ctrl</b>: click to select in groups; drag to move hor/vert"),
723 _("<b>Shift</b>: click to toggle select; drag for rubberband selection"),
724 _("<b>Alt</b>: click to select under; drag to move selected or select by touch"));
725 // if Alt and nonempty selection, show moving cursor ("move selected"):
726 if (alt && !selection->isEmpty() && !desktop->isWaitingCursor()) {
727 GdkCursor *cursor = gdk_cursor_new(GDK_FLEUR);
728 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, cursor);
729 gdk_cursor_destroy(cursor);
730 }
731 //*/
732 break;
733 }
734 }
736 switch (get_group0_keyval (&event->key)) {
737 case GDK_Left: // move selection left
738 case GDK_KP_Left:
739 case GDK_KP_4:
740 if (!MOD__CTRL) { // not ctrl
741 gint mul = 1 + gobble_key_events(
742 get_group0_keyval(&event->key), 0); // with any mask
743 if (MOD__ALT) { // alt
744 if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*-10, 0); // shift
745 else sp_selection_move_screen(desktop, mul*-1, 0); // no shift
746 }
747 else { // no alt
748 if (MOD__SHIFT) sp_selection_move(desktop, mul*-10*nudge, 0); // shift
749 else sp_selection_move(desktop, mul*-nudge, 0); // no shift
750 }
751 ret = TRUE;
752 }
753 break;
754 case GDK_Up: // move selection up
755 case GDK_KP_Up:
756 case GDK_KP_8:
757 if (!MOD__CTRL) { // not ctrl
758 gint mul = 1 + gobble_key_events(
759 get_group0_keyval(&event->key), 0); // with any mask
760 if (MOD__ALT) { // alt
761 if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*10); // shift
762 else sp_selection_move_screen(desktop, 0, mul*1); // no shift
763 }
764 else { // no alt
765 if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*10*nudge); // shift
766 else sp_selection_move(desktop, 0, mul*nudge); // no shift
767 }
768 ret = TRUE;
769 }
770 break;
771 case GDK_Right: // move selection right
772 case GDK_KP_Right:
773 case GDK_KP_6:
774 if (!MOD__CTRL) { // not ctrl
775 gint mul = 1 + gobble_key_events(
776 get_group0_keyval(&event->key), 0); // with any mask
777 if (MOD__ALT) { // alt
778 if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*10, 0); // shift
779 else sp_selection_move_screen(desktop, mul*1, 0); // no shift
780 }
781 else { // no alt
782 if (MOD__SHIFT) sp_selection_move(desktop, mul*10*nudge, 0); // shift
783 else sp_selection_move(desktop, mul*nudge, 0); // no shift
784 }
785 ret = TRUE;
786 }
787 break;
788 case GDK_Down: // move selection down
789 case GDK_KP_Down:
790 case GDK_KP_2:
791 if (!MOD__CTRL) { // not ctrl
792 gint mul = 1 + gobble_key_events(
793 get_group0_keyval(&event->key), 0); // with any mask
794 if (MOD__ALT) { // alt
795 if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*-10); // shift
796 else sp_selection_move_screen(desktop, 0, mul*-1); // no shift
797 }
798 else { // no alt
799 if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*-10*nudge); // shift
800 else sp_selection_move(desktop, 0, mul*-nudge); // no shift
801 }
802 ret = TRUE;
803 }
804 break;
805 case GDK_Escape:
806 if (!sp_select_context_abort(event_context))
807 selection->clear();
808 ret = TRUE;
809 break;
810 case GDK_a:
811 case GDK_A:
812 if (MOD__CTRL_ONLY) {
813 sp_edit_select_all(desktop);
814 ret = TRUE;
815 }
816 break;
817 case GDK_space:
818 /* stamping mode: show outline mode moving */
819 /* FIXME: Is next condition ok? (lauris) */
820 if (sc->dragging && sc->grabbed) {
821 seltrans->stamp();
822 ret = TRUE;
823 }
824 break;
825 case GDK_x:
826 case GDK_X:
827 if (MOD__ALT_ONLY) {
828 desktop->setToolboxFocusTo ("altx");
829 ret = TRUE;
830 }
831 break;
832 case GDK_bracketleft:
833 if (MOD__ALT) {
834 gint mul = 1 + gobble_key_events(
835 get_group0_keyval(&event->key), 0); // with any mask
836 sp_selection_rotate_screen(selection, mul*1);
837 } else if (MOD__CTRL) {
838 sp_selection_rotate(selection, 90);
839 } else if (snaps) {
840 sp_selection_rotate(selection, 180/snaps);
841 }
842 ret = TRUE;
843 break;
844 case GDK_bracketright:
845 if (MOD__ALT) {
846 gint mul = 1 + gobble_key_events(
847 get_group0_keyval(&event->key), 0); // with any mask
848 sp_selection_rotate_screen(selection, -1*mul);
849 } else if (MOD__CTRL) {
850 sp_selection_rotate(selection, -90);
851 } else if (snaps) {
852 sp_selection_rotate(selection, -180/snaps);
853 }
854 ret = TRUE;
855 break;
856 case GDK_less:
857 case GDK_comma:
858 if (MOD__ALT) {
859 gint mul = 1 + gobble_key_events(
860 get_group0_keyval(&event->key), 0); // with any mask
861 sp_selection_scale_screen(selection, -2*mul);
862 } else if (MOD__CTRL) {
863 sp_selection_scale_times(selection, 0.5);
864 } else {
865 gint mul = 1 + gobble_key_events(
866 get_group0_keyval(&event->key), 0); // with any mask
867 sp_selection_scale(selection, -offset*mul);
868 }
869 ret = TRUE;
870 break;
871 case GDK_greater:
872 case GDK_period:
873 if (MOD__ALT) {
874 gint mul = 1 + gobble_key_events(
875 get_group0_keyval(&event->key), 0); // with any mask
876 sp_selection_scale_screen(selection, 2*mul);
877 } else if (MOD__CTRL) {
878 sp_selection_scale_times(selection, 2);
879 } else {
880 gint mul = 1 + gobble_key_events(
881 get_group0_keyval(&event->key), 0); // with any mask
882 sp_selection_scale(selection, offset*mul);
883 }
884 ret = TRUE;
885 break;
886 case GDK_Return:
887 if (MOD__CTRL_ONLY) {
888 if (selection->singleItem()) {
889 SPItem *clicked_item = selection->singleItem();
890 if ( SP_IS_GROUP(clicked_item) ||
891 SP_IS_BOX3D(clicked_item)) { // enter group or a 3D box
892 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
893 sp_desktop_selection(desktop)->clear();
894 } else {
895 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));
896 }
897 }
898 ret = TRUE;
899 }
900 break;
901 case GDK_BackSpace:
902 if (MOD__CTRL_ONLY) {
903 sp_select_context_up_one_layer(desktop);
904 ret = TRUE;
905 }
906 break;
907 case GDK_s:
908 case GDK_S:
909 if (MOD__SHIFT_ONLY) {
910 if (!selection->isEmpty()) {
911 seltrans->increaseState();
912 }
913 ret = TRUE;
914 }
915 break;
916 case GDK_g:
917 case GDK_G:
918 if (MOD__SHIFT_ONLY) {
919 sp_selection_to_guides(desktop);
920 ret = true;
921 }
922 break;
923 default:
924 break;
925 }
926 break;
928 case GDK_KEY_RELEASE:
929 {
930 guint keyval = get_group0_keyval(&event->key);
931 if (key_is_a_modifier (keyval))
932 event_context->defaultMessageContext()->clear();
934 bool alt = ( MOD__ALT
935 || (keyval == GDK_Alt_L)
936 || (keyval == GDK_Alt_R)
937 || (keyval == GDK_Meta_L)
938 || (keyval == GDK_Meta_R));
940 if (Inkscape::Rubberband::get(desktop)->is_started()) {
941 // if Alt then change cursor to moving cursor:
942 if (alt) {
943 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_RECT);
944 }
945 }
946 }
947 // set cursor to default.
948 if (!desktop->isWaitingCursor())
949 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
950 break;
951 default:
952 break;
953 }
955 if (!ret) {
956 if (((SPEventContextClass *) parent_class)->root_handler)
957 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
958 }
960 return ret;
961 }
964 /*
965 Local Variables:
966 mode:c++
967 c-file-style:"stroustrup"
968 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
969 indent-tabs-mode:nil
970 fill-column:99
971 End:
972 */
973 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :