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 *
9 * Copyright (C) 2006 Johan Engelen <johan@shouraizou.nl>
10 * Copyright (C) 1999-2005 Authors
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #ifdef HAVE_CONFIG_H
16 # include "config.h"
17 #endif
18 #include <cstring>
19 #include <string>
20 #include <gdk/gdkkeysyms.h>
21 #include "macros.h"
22 #include "rubberband.h"
23 #include "document.h"
24 #include "selection.h"
25 #include "seltrans-handles.h"
26 #include "sp-cursor.h"
27 #include "pixmaps/cursor-select-m.xpm"
28 #include "pixmaps/cursor-select-d.xpm"
29 #include "pixmaps/handles.xpm"
30 #include <glibmm/i18n.h>
32 #include "select-context.h"
33 #include "selection-chemistry.h"
34 #include "desktop.h"
35 #include "desktop-handles.h"
36 #include "sp-root.h"
37 #include "preferences.h"
38 #include "tools-switch.h"
39 #include "message-stack.h"
40 #include "selection-describer.h"
41 #include "seltrans.h"
42 #include "box3d.h"
44 using Inkscape::DocumentUndo;
46 static void sp_select_context_class_init(SPSelectContextClass *klass);
47 static void sp_select_context_init(SPSelectContext *select_context);
48 static void sp_select_context_dispose(GObject *object);
50 static void sp_select_context_setup(SPEventContext *ec);
51 static void sp_select_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val);
52 static gint sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event);
53 static gint sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
55 static SPEventContextClass *parent_class;
57 static GdkCursor *CursorSelectMouseover = NULL;
58 static GdkCursor *CursorSelectDragging = NULL;
59 GdkPixbuf *handles[13];
61 static gint rb_escaped = 0; // if non-zero, rubberband was canceled by esc, so the next button release should not deselect
62 static gint drag_escaped = 0; // if non-zero, drag was canceled by esc
64 static gint xp = 0, yp = 0; // where drag started
65 static gint tolerance = 0;
66 static bool within_tolerance = false;
68 GtkType
69 sp_select_context_get_type(void)
70 {
71 static GType type = 0;
72 if (!type) {
73 GTypeInfo info = {
74 sizeof(SPSelectContextClass),
75 NULL, NULL,
76 (GClassInitFunc) sp_select_context_class_init,
77 NULL, NULL,
78 sizeof(SPSelectContext),
79 4,
80 (GInstanceInitFunc) sp_select_context_init,
81 NULL, /* value_table */
82 };
83 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPSelectContext", &info, (GTypeFlags)0);
84 }
85 return type;
86 }
88 static void
89 sp_select_context_class_init(SPSelectContextClass *klass)
90 {
91 GObjectClass *object_class = (GObjectClass *) klass;
92 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
94 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
96 object_class->dispose = sp_select_context_dispose;
98 event_context_class->setup = sp_select_context_setup;
99 event_context_class->set = sp_select_context_set;
100 event_context_class->root_handler = sp_select_context_root_handler;
101 event_context_class->item_handler = sp_select_context_item_handler;
102 }
104 static void
105 sp_select_context_init(SPSelectContext *sc)
106 {
107 sc->dragging = FALSE;
108 sc->moved = FALSE;
109 sc->button_press_shift = false;
110 sc->button_press_ctrl = false;
111 sc->button_press_alt = false;
112 sc->_seltrans = NULL;
113 sc->_describer = NULL;
115 // cursors in select context
116 CursorSelectMouseover = sp_cursor_new_from_xpm(cursor_select_m_xpm , 1, 1);
117 CursorSelectDragging = sp_cursor_new_from_xpm(cursor_select_d_xpm , 1, 1);
118 // selection handles
119 handles[0] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_nw_xpm);
120 handles[1] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_ne_xpm);
121 handles[2] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_h_xpm);
122 handles[3] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_v_xpm);
123 handles[4] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_nw_xpm);
124 handles[5] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_n_xpm);
125 handles[6] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_ne_xpm);
126 handles[7] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_e_xpm);
127 handles[8] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_se_xpm);
128 handles[9] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_s_xpm);
129 handles[10] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_sw_xpm);
130 handles[11] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_w_xpm);
131 handles[12] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_center_xpm);
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(
176 desktop->selection,
177 desktop->messageStack(),
178 _("Click selection to toggle scale/rotation handles"),
179 _("No objects selected. Click, Shift+click, or drag around objects to select.")
180 );
182 select_context->_seltrans = new Inkscape::SelTrans(desktop);
184 sp_event_context_read(ec, "show");
185 sp_event_context_read(ec, "transform");
187 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
188 if (prefs->getBool("/tools/select/gradientdrag")) {
189 ec->enableGrDrag();
190 }
191 }
193 static void
194 sp_select_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val)
195 {
196 SPSelectContext *sc = SP_SELECT_CONTEXT(ec);
197 Glib::ustring path = val->getEntryName();
199 if (path == "show") {
200 if (val->getString() == "outline") {
201 sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_OUTLINE);
202 } else {
203 sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_CONTENT);
204 }
205 }
206 }
208 static bool
209 sp_select_context_abort(SPEventContext *event_context)
210 {
211 SPDesktop *desktop = event_context->desktop;
212 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
213 Inkscape::SelTrans *seltrans = sc->_seltrans;
215 if (sc->dragging) {
216 if (sc->moved) { // cancel dragging an object
217 seltrans->ungrab();
218 sc->moved = FALSE;
219 sc->dragging = FALSE;
220 sp_event_context_discard_delayed_snap_event(event_context);
221 drag_escaped = 1;
223 if (sc->item) {
224 // only undo if the item is still valid
225 if (SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))) {
226 DocumentUndo::undo(sp_desktop_document(desktop));
227 }
229 sp_object_unref( SP_OBJECT(sc->item), NULL);
230 } else if (sc->button_press_ctrl) {
231 // NOTE: This is a workaround to a bug.
232 // When the ctrl key is held, sc->item is not defined
233 // so in this case (only), we skip the object doc check
234 DocumentUndo::undo(sp_desktop_document(desktop));
235 }
236 sc->item = NULL;
238 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));
239 return true;
240 }
241 } else {
242 if (Inkscape::Rubberband::get(desktop)->is_started()) {
243 Inkscape::Rubberband::get(desktop)->stop();
244 rb_escaped = 1;
245 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
246 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));
247 return true;
248 }
249 }
250 return false;
251 }
253 bool
254 key_is_a_modifier (guint key) {
255 return (key == GDK_Alt_L ||
256 key == GDK_Alt_R ||
257 key == GDK_Control_L ||
258 key == GDK_Control_R ||
259 key == GDK_Shift_L ||
260 key == GDK_Shift_R ||
261 key == GDK_Meta_L || // Meta is when you press Shift+Alt (at least on my machine)
262 key == GDK_Meta_R);
263 }
265 void
266 sp_select_context_up_one_layer(SPDesktop *desktop)
267 {
268 /* Click in empty place, go up one level -- but don't leave a layer to root.
269 *
270 * (Rationale: we don't usually allow users to go to the root, since that
271 * detracts from the layer metaphor: objects at the root level can in front
272 * of or behind layers. Whereas it's fine to go to the root if editing
273 * a document that has no layers (e.g. a non-Inkscape document).)
274 *
275 * Once we support editing SVG "islands" (e.g. <svg> embedded in an xhtml
276 * document), we might consider further restricting the below to disallow
277 * leaving a layer to go to a non-layer.
278 */
279 SPObject *const current_layer = desktop->currentLayer();
280 if (current_layer) {
281 SPObject *const parent = SP_OBJECT_PARENT(current_layer);
282 if ( parent
283 && ( SP_OBJECT_PARENT(parent)
284 || !( SP_IS_GROUP(current_layer)
285 && ( SPGroup::LAYER
286 == SP_GROUP(current_layer)->layerMode() ) ) ) )
287 {
288 desktop->setCurrentLayer(parent);
289 if (SP_IS_GROUP(current_layer) && SPGroup::LAYER != SP_GROUP(current_layer)->layerMode())
290 sp_desktop_selection(desktop)->set(current_layer);
291 }
292 }
293 }
295 static gint
296 sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
297 {
298 gint ret = FALSE;
300 SPDesktop *desktop = event_context->desktop;
301 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
302 Inkscape::SelTrans *seltrans = sc->_seltrans;
304 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
305 tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
307 // make sure we still have valid objects to move around
308 if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
309 sp_select_context_abort(event_context);
310 }
312 switch (event->type) {
313 case GDK_BUTTON_PRESS:
314 if (event->button.button == 1 && !event_context->space_panning) {
315 /* Left mousebutton */
317 // save drag origin
318 xp = (gint) event->button.x;
319 yp = (gint) event->button.y;
320 within_tolerance = true;
322 // remember what modifiers were on before button press
323 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
324 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
325 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
327 if (event->button.state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK)) {
328 // if shift or ctrl was pressed, do not move objects;
329 // pass the event to root handler which will perform rubberband, shift-click, ctrl-click, ctrl-drag
330 } else {
331 sc->dragging = TRUE;
332 sc->moved = FALSE;
334 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
336 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
338 // remember the clicked item in sc->item:
339 if (sc->item) {
340 sp_object_unref(sc->item, NULL);
341 sc->item = NULL;
342 }
343 sc->item = sp_event_context_find_item (desktop,
344 Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
345 sp_object_ref(sc->item, NULL);
347 rb_escaped = drag_escaped = 0;
349 if (sc->grabbed) {
350 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
351 sc->grabbed = NULL;
352 }
353 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->drawing),
354 GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
355 GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK,
356 NULL, event->button.time);
357 sc->grabbed = SP_CANVAS_ITEM(desktop->drawing);
359 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
361 ret = TRUE;
362 }
363 } else if (event->button.button == 3) {
364 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
365 sp_select_context_abort(event_context);
366 }
367 break;
369 case GDK_ENTER_NOTIFY:
370 {
371 if (!desktop->isWaitingCursor() && !sc->dragging) {
372 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectMouseover);
373 }
374 break;
375 }
377 case GDK_LEAVE_NOTIFY:
378 if (!desktop->isWaitingCursor() && !sc->dragging)
379 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
380 break;
382 case GDK_KEY_PRESS:
383 if (get_group0_keyval (&event->key) == GDK_space) {
384 if (sc->dragging && sc->grabbed) {
385 /* stamping mode: show content mode moving */
386 seltrans->stamp();
387 ret = TRUE;
388 }
389 }
390 break;
392 default:
393 break;
394 }
396 if (!ret) {
397 if (((SPEventContextClass *) parent_class)->item_handler)
398 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
399 }
401 return ret;
402 }
404 static gint
405 sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event)
406 {
407 SPItem *item = NULL;
408 SPItem *item_at_point = NULL, *group_at_point = NULL, *item_in_group = NULL;
409 gint ret = FALSE;
411 SPDesktop *desktop = event_context->desktop;
412 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
413 Inkscape::SelTrans *seltrans = sc->_seltrans;
414 Inkscape::Selection *selection = sp_desktop_selection(desktop);
415 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
417 // make sure we still have valid objects to move around
418 if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
419 sp_select_context_abort(event_context);
420 }
422 switch (event->type) {
423 case GDK_2BUTTON_PRESS:
424 if (event->button.button == 1) {
425 if (!selection->isEmpty()) {
426 SPItem *clicked_item = (SPItem *) selection->itemList()->data;
427 if (SP_IS_GROUP(clicked_item) && !SP_IS_BOX3D(clicked_item)) { // enter group if it's not a 3D box
428 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
429 sp_desktop_selection(desktop)->clear();
430 sc->dragging = false;
431 sp_event_context_discard_delayed_snap_event(event_context);
433 sp_canvas_end_forced_full_redraws(desktop->canvas);
434 } else { // switch tool
435 Geom::Point const button_pt(event->button.x, event->button.y);
436 Geom::Point const p(desktop->w2d(button_pt));
437 tools_switch_by_item (desktop, clicked_item, p);
438 }
439 } else {
440 sp_select_context_up_one_layer(desktop);
441 }
442 ret = TRUE;
443 }
444 break;
445 case GDK_BUTTON_PRESS:
446 if (event->button.button == 1 && !event_context->space_panning) {
448 // save drag origin
449 xp = (gint) event->button.x;
450 yp = (gint) event->button.y;
451 within_tolerance = true;
453 Geom::Point const button_pt(event->button.x, event->button.y);
454 Geom::Point const p(desktop->w2d(button_pt));
455 if (event->button.state & GDK_MOD1_MASK)
456 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
457 Inkscape::Rubberband::get(desktop)->start(desktop, p);
458 if (sc->grabbed) {
459 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
460 sc->grabbed = NULL;
461 }
462 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
463 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,
464 NULL, event->button.time);
465 sc->grabbed = SP_CANVAS_ITEM(desktop->acetate);
467 // remember what modifiers were on before button press
468 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
469 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
470 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
472 sc->moved = FALSE;
474 rb_escaped = drag_escaped = 0;
476 ret = TRUE;
477 } else if (event->button.button == 3) {
478 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
479 sp_select_context_abort(event_context);
480 }
481 break;
483 case GDK_MOTION_NOTIFY:
484 tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
485 if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
486 Geom::Point const motion_pt(event->motion.x, event->motion.y);
487 Geom::Point const p(desktop->w2d(motion_pt));
489 if ( within_tolerance
490 && ( abs( (gint) event->motion.x - xp ) < tolerance )
491 && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
492 break; // do not drag if we're within tolerance from origin
493 }
494 // Once the user has moved farther than tolerance from the original location
495 // (indicating they intend to move the object, not click), then always process the
496 // motion notify coordinates as given (no snapping back to origin)
497 within_tolerance = false;
499 if (sc->button_press_ctrl || (sc->button_press_alt && !sc->button_press_shift && !selection->isEmpty())) {
500 // if it's not click and ctrl or alt was pressed (the latter with some selection
501 // but not with shift) we want to drag rather than rubberband
502 sc->dragging = TRUE;
503 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
505 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
506 }
508 if (sc->dragging) {
509 /* User has dragged fast, so we get events on root (lauris)*/
510 // not only that; we will end up here when ctrl-dragging as well
511 // and also when we started within tolerance, but trespassed tolerance outside of item
512 Inkscape::Rubberband::get(desktop)->stop();
513 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
514 item_at_point = desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), FALSE);
515 if (!item_at_point) // if no item at this point, try at the click point (bug 1012200)
516 item_at_point = desktop->getItemAtPoint(Geom::Point(xp, yp), FALSE);
517 if (item_at_point || sc->moved || sc->button_press_alt) {
518 // drag only if starting from an item, or if something is already grabbed, or if alt-dragging
519 if (!sc->moved) {
520 item_in_group = desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), TRUE);
521 group_at_point = desktop->getGroupAtPoint(Geom::Point(event->button.x, event->button.y));
522 if (SP_IS_LAYER(selection->single()))
523 group_at_point = SP_GROUP(selection->single());
525 // group-at-point is meant to be topmost item if it's a group,
526 // not topmost group of all items at point
527 if (group_at_point != item_in_group &&
528 !(group_at_point && item_at_point &&
529 group_at_point->isAncestorOf(item_at_point)))
530 group_at_point = NULL;
532 // if neither a group nor an item (possibly in a group) at point are selected, set selection to the item at point
533 if ((!item_in_group || !selection->includes(item_in_group)) &&
534 (!group_at_point || !selection->includes(group_at_point))
535 && !sc->button_press_alt) {
536 // select what is under cursor
537 if (!seltrans->isEmpty()) {
538 seltrans->resetState();
539 }
540 // when simply ctrl-dragging, we don't want to go into groups
541 if (item_at_point && !selection->includes(item_at_point))
542 selection->set(item_at_point);
543 } // otherwise, do not change selection so that dragging selected-within-group items, as well as alt-dragging, is possible
544 seltrans->grab(p, -1, -1, FALSE, TRUE);
545 sc->moved = TRUE;
546 }
547 if (!seltrans->isEmpty())
548 seltrans->moveTo(p, event->button.state);
549 desktop->scroll_to_point(p);
550 gobble_motion_events(GDK_BUTTON1_MASK);
551 ret = TRUE;
552 } else {
553 sc->dragging = FALSE;
554 sp_event_context_discard_delayed_snap_event(event_context);
555 sp_canvas_end_forced_full_redraws(desktop->canvas);
556 }
557 } else {
558 if (Inkscape::Rubberband::get(desktop)->is_started()) {
559 Inkscape::Rubberband::get(desktop)->move(p);
560 if (Inkscape::Rubberband::get(desktop)->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
561 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> objects to select them; release <b>Alt</b> to switch to rubberband selection"));
562 } else {
563 event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag around</b> objects to select them; press <b>Alt</b> to switch to touch selection"));
564 }
565 gobble_motion_events(GDK_BUTTON1_MASK);
566 }
567 }
568 }
569 break;
570 case GDK_BUTTON_RELEASE:
571 xp = yp = 0;
572 if ((event->button.button == 1) && (sc->grabbed) && !event_context->space_panning) {
573 if (sc->dragging) {
574 if (sc->moved) {
575 // item has been moved
576 seltrans->ungrab();
577 sc->moved = FALSE;
578 } else if (sc->item && !drag_escaped) {
579 // item has not been moved -> simply a click, do selecting
580 if (!selection->isEmpty()) {
581 if (event->button.state & GDK_SHIFT_MASK) {
582 // with shift, toggle selection
583 seltrans->resetState();
584 selection->toggle(sc->item);
585 } else {
586 SPObject* single = selection->single();
587 // without shift, increase state (i.e. toggle scale/rotation handles)
588 if (selection->includes(sc->item)) {
589 seltrans->increaseState();
590 } else if (SP_IS_LAYER(single) && single->isAncestorOf(sc->item)) {
591 seltrans->increaseState();
592 } else {
593 seltrans->resetState();
594 selection->set(sc->item);
595 }
596 }
597 } else { // simple or shift click, no previous selection
598 seltrans->resetState();
599 selection->set(sc->item);
600 }
601 }
602 sc->dragging = FALSE;
603 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectMouseover);
604 sp_event_context_discard_delayed_snap_event(event_context);
605 sp_canvas_end_forced_full_redraws(desktop->canvas);
607 if (sc->item) {
608 sp_object_unref( SP_OBJECT(sc->item), NULL);
609 }
610 sc->item = NULL;
611 } else {
612 Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop);
613 if (r->is_started() && !within_tolerance) {
614 // this was a rubberband drag
615 GSList *items = NULL;
616 if (r->getMode() == RUBBERBAND_MODE_RECT) {
617 Geom::OptRect const b = r->getRectangle();
618 items = sp_desktop_document(desktop)->getItemsInBox(desktop->dkey, *b);
619 } else if (r->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
620 items = sp_desktop_document(desktop)->getItemsAtPoints(desktop->dkey, r->getPoints());
621 }
623 seltrans->resetState();
624 r->stop();
625 SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
627 if (event->button.state & GDK_SHIFT_MASK) {
628 // with shift, add to selection
629 selection->addList (items);
630 } else {
631 // without shift, simply select anew
632 selection->setList (items);
633 }
634 g_slist_free (items);
635 } else { // it was just a click, or a too small rubberband
636 r->stop();
637 if (sc->button_press_shift && !rb_escaped && !drag_escaped) {
638 // this was a shift+click or alt+shift+click, select what was clicked upon
640 sc->button_press_shift = false;
642 if (sc->button_press_ctrl) {
643 // 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, TRUE);
646 sc->button_press_ctrl = FALSE;
647 } else {
648 // don't go into groups, honoring Alt
649 item = sp_event_context_find_item (desktop,
650 Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
651 }
653 if (item) {
654 selection->toggle(item);
655 item = NULL;
656 }
658 } else if ((sc->button_press_ctrl || sc->button_press_alt) && !rb_escaped && !drag_escaped) { // ctrl+click, alt+click
660 item = sp_event_context_find_item (desktop,
661 Geom::Point(event->button.x, event->button.y), sc->button_press_alt, sc->button_press_ctrl);
663 sc->button_press_ctrl = FALSE;
664 sc->button_press_alt = FALSE;
666 if (item) {
667 if (selection->includes(item)) {
668 seltrans->increaseState();
669 } else {
670 seltrans->resetState();
671 selection->set(item);
672 }
673 item = NULL;
674 }
676 } else { // click without shift, simply deselect, unless with Alt or something was cancelled
677 if (!selection->isEmpty()) {
678 if (!(rb_escaped) && !(drag_escaped) && !(event->button.state & GDK_MOD1_MASK))
679 selection->clear();
680 rb_escaped = 0;
681 ret = TRUE;
682 }
683 }
684 }
685 ret = TRUE;
686 }
687 if (sc->grabbed) {
688 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
689 sc->grabbed = NULL;
690 }
692 desktop->updateNow();
693 }
694 if (event->button.button == 1) {
695 Inkscape::Rubberband::get(desktop)->stop(); // might have been started in another tool!
696 }
697 sc->button_press_shift = false;
698 sc->button_press_ctrl = false;
699 sc->button_press_alt = false;
700 break;
702 case GDK_KEY_PRESS: // keybindings for select context
704 {
705 {
706 guint keyval = get_group0_keyval(&event->key);
707 bool alt = ( MOD__ALT
708 || (keyval == GDK_Alt_L)
709 || (keyval == GDK_Alt_R)
710 || (keyval == GDK_Meta_L)
711 || (keyval == GDK_Meta_R));
713 if (!key_is_a_modifier (keyval)) {
714 event_context->defaultMessageContext()->clear();
715 } else if (sc->grabbed || seltrans->isGrabbed()) {
716 if (Inkscape::Rubberband::get(desktop)->is_started()) {
717 // if Alt then change cursor to moving cursor:
718 if (alt) {
719 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
720 }
721 } else {
722 // do not change the statusbar text when mousekey is down to move or transform the object,
723 // because the statusbar text is already updated somewhere else.
724 break;
725 }
726 } else {
727 sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,
728 _("<b>Ctrl</b>: click to select in groups; drag to move hor/vert"),
729 _("<b>Shift</b>: click to toggle select; drag for rubberband selection"),
730 _("<b>Alt</b>: click to select under; drag to move selected or select by touch"));
731 // if Alt and nonempty selection, show moving cursor ("move selected"):
732 if (alt && !selection->isEmpty() && !desktop->isWaitingCursor()) {
733 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, CursorSelectDragging);
734 }
735 //*/
736 break;
737 }
738 }
740 gdouble const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px
741 gdouble const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000);
742 int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
744 switch (get_group0_keyval (&event->key)) {
745 case GDK_Left: // move selection left
746 case GDK_KP_Left:
747 case GDK_KP_4:
748 if (!MOD__CTRL) { // not ctrl
749 gint mul = 1 + gobble_key_events(
750 get_group0_keyval(&event->key), 0); // with any mask
751 if (MOD__ALT) { // alt
752 if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*-10, 0); // shift
753 else sp_selection_move_screen(desktop, mul*-1, 0); // no shift
754 }
755 else { // no alt
756 if (MOD__SHIFT) sp_selection_move(desktop, mul*-10*nudge, 0); // shift
757 else sp_selection_move(desktop, mul*-nudge, 0); // no shift
758 }
759 ret = TRUE;
760 }
761 break;
762 case GDK_Up: // move selection up
763 case GDK_KP_Up:
764 case GDK_KP_8:
765 if (!MOD__CTRL) { // not ctrl
766 gint mul = 1 + gobble_key_events(
767 get_group0_keyval(&event->key), 0); // with any mask
768 if (MOD__ALT) { // alt
769 if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*10); // shift
770 else sp_selection_move_screen(desktop, 0, mul*1); // no shift
771 }
772 else { // no alt
773 if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*10*nudge); // shift
774 else sp_selection_move(desktop, 0, mul*nudge); // no shift
775 }
776 ret = TRUE;
777 }
778 break;
779 case GDK_Right: // move selection right
780 case GDK_KP_Right:
781 case GDK_KP_6:
782 if (!MOD__CTRL) { // not ctrl
783 gint mul = 1 + gobble_key_events(
784 get_group0_keyval(&event->key), 0); // with any mask
785 if (MOD__ALT) { // alt
786 if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*10, 0); // shift
787 else sp_selection_move_screen(desktop, mul*1, 0); // no shift
788 }
789 else { // no alt
790 if (MOD__SHIFT) sp_selection_move(desktop, mul*10*nudge, 0); // shift
791 else sp_selection_move(desktop, mul*nudge, 0); // no shift
792 }
793 ret = TRUE;
794 }
795 break;
796 case GDK_Down: // move selection down
797 case GDK_KP_Down:
798 case GDK_KP_2:
799 if (!MOD__CTRL) { // not ctrl
800 gint mul = 1 + gobble_key_events(
801 get_group0_keyval(&event->key), 0); // with any mask
802 if (MOD__ALT) { // alt
803 if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*-10); // shift
804 else sp_selection_move_screen(desktop, 0, mul*-1); // no shift
805 }
806 else { // no alt
807 if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*-10*nudge); // shift
808 else sp_selection_move(desktop, 0, mul*-nudge); // no shift
809 }
810 ret = TRUE;
811 }
812 break;
813 case GDK_Escape:
814 if (!sp_select_context_abort(event_context))
815 selection->clear();
816 ret = TRUE;
817 break;
818 case GDK_a:
819 case GDK_A:
820 if (MOD__CTRL_ONLY) {
821 sp_edit_select_all(desktop);
822 ret = TRUE;
823 }
824 break;
825 case GDK_space:
826 /* stamping mode: show outline mode moving */
827 /* FIXME: Is next condition ok? (lauris) */
828 if (sc->dragging && sc->grabbed) {
829 seltrans->stamp();
830 ret = TRUE;
831 }
832 break;
833 case GDK_x:
834 case GDK_X:
835 if (MOD__ALT_ONLY) {
836 desktop->setToolboxFocusTo ("altx");
837 ret = TRUE;
838 }
839 break;
840 case GDK_bracketleft:
841 if (MOD__ALT) {
842 gint mul = 1 + gobble_key_events(
843 get_group0_keyval(&event->key), 0); // with any mask
844 sp_selection_rotate_screen(selection, mul*1);
845 } else if (MOD__CTRL) {
846 sp_selection_rotate(selection, 90);
847 } else if (snaps) {
848 sp_selection_rotate(selection, 180/snaps);
849 }
850 ret = TRUE;
851 break;
852 case GDK_bracketright:
853 if (MOD__ALT) {
854 gint mul = 1 + gobble_key_events(
855 get_group0_keyval(&event->key), 0); // with any mask
856 sp_selection_rotate_screen(selection, -1*mul);
857 } else if (MOD__CTRL) {
858 sp_selection_rotate(selection, -90);
859 } else if (snaps) {
860 sp_selection_rotate(selection, -180/snaps);
861 }
862 ret = TRUE;
863 break;
864 case GDK_less:
865 case GDK_comma:
866 if (MOD__ALT) {
867 gint mul = 1 + gobble_key_events(
868 get_group0_keyval(&event->key), 0); // with any mask
869 sp_selection_scale_screen(selection, -2*mul);
870 } else if (MOD__CTRL) {
871 sp_selection_scale_times(selection, 0.5);
872 } else {
873 gint mul = 1 + gobble_key_events(
874 get_group0_keyval(&event->key), 0); // with any mask
875 sp_selection_scale(selection, -offset*mul);
876 }
877 ret = TRUE;
878 break;
879 case GDK_greater:
880 case GDK_period:
881 if (MOD__ALT) {
882 gint mul = 1 + gobble_key_events(
883 get_group0_keyval(&event->key), 0); // with any mask
884 sp_selection_scale_screen(selection, 2*mul);
885 } else if (MOD__CTRL) {
886 sp_selection_scale_times(selection, 2);
887 } else {
888 gint mul = 1 + gobble_key_events(
889 get_group0_keyval(&event->key), 0); // with any mask
890 sp_selection_scale(selection, offset*mul);
891 }
892 ret = TRUE;
893 break;
894 case GDK_Return:
895 if (MOD__CTRL_ONLY) {
896 if (selection->singleItem()) {
897 SPItem *clicked_item = selection->singleItem();
898 if ( SP_IS_GROUP(clicked_item) ||
899 SP_IS_BOX3D(clicked_item)) { // enter group or a 3D box
900 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
901 sp_desktop_selection(desktop)->clear();
902 } else {
903 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));
904 }
905 }
906 ret = TRUE;
907 }
908 break;
909 case GDK_BackSpace:
910 if (MOD__CTRL_ONLY) {
911 sp_select_context_up_one_layer(desktop);
912 ret = TRUE;
913 }
914 break;
915 case GDK_s:
916 case GDK_S:
917 if (MOD__SHIFT_ONLY) {
918 if (!selection->isEmpty()) {
919 seltrans->increaseState();
920 }
921 ret = TRUE;
922 }
923 break;
924 case GDK_g:
925 case GDK_G:
926 if (MOD__SHIFT_ONLY) {
927 sp_selection_to_guides(desktop);
928 ret = true;
929 }
930 break;
931 default:
932 break;
933 }
934 break;
935 }
936 case GDK_KEY_RELEASE:
937 {
938 guint keyval = get_group0_keyval(&event->key);
939 if (key_is_a_modifier (keyval))
940 event_context->defaultMessageContext()->clear();
942 bool alt = ( MOD__ALT
943 || (keyval == GDK_Alt_L)
944 || (keyval == GDK_Alt_R)
945 || (keyval == GDK_Meta_L)
946 || (keyval == GDK_Meta_R));
948 if (Inkscape::Rubberband::get(desktop)->is_started()) {
949 // if Alt then change cursor to moving cursor:
950 if (alt) {
951 Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_RECT);
952 }
953 }
954 }
955 // set cursor to default.
956 if (!desktop->isWaitingCursor()) {
957 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
958 }
959 break;
960 default:
961 break;
962 }
964 if (!ret) {
965 if (((SPEventContextClass *) parent_class)->root_handler)
966 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
967 }
969 return ret;
970 }
973 /*
974 Local Variables:
975 mode:c++
976 c-file-style:"stroustrup"
977 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
978 indent-tabs-mode:nil
979 fill-column:99
980 End:
981 */
982 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :