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 <gdk/gdkkeysyms.h>
20 #include "macros.h"
21 #include "rubberband.h"
22 #include "document.h"
23 #include "selection.h"
24 #include "seltrans-handles.h"
25 #include "sp-cursor.h"
26 #include "pixmaps/cursor-select-m.xpm"
27 #include "pixmaps/cursor-select-d.xpm"
28 #include "pixmaps/handles.xpm"
29 #include <glibmm/i18n.h>
31 #include "select-context.h"
32 #include "selection-chemistry.h"
33 #include "desktop.h"
34 #include "desktop-handles.h"
35 #include "sp-root.h"
36 #include "prefs-utils.h"
37 #include "tools-switch.h"
38 #include "message-stack.h"
39 #include "selection-describer.h"
40 #include "seltrans.h"
42 static void sp_select_context_class_init(SPSelectContextClass *klass);
43 static void sp_select_context_init(SPSelectContext *select_context);
44 static void sp_select_context_dispose(GObject *object);
46 static void sp_select_context_setup(SPEventContext *ec);
47 static void sp_select_context_set(SPEventContext *ec, gchar const *key, gchar const *val);
48 static gint sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event);
49 static gint sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
51 static SPEventContextClass *parent_class;
53 static GdkCursor *CursorSelectMouseover = NULL;
54 static GdkCursor *CursorSelectDragging = NULL;
55 GdkPixbuf *handles[13];
57 static gint rb_escaped = 0; // if non-zero, rubberband was canceled by esc, so the next button release should not deselect
58 static gint drag_escaped = 0; // if non-zero, drag was canceled by esc
60 static gint xp = 0, yp = 0; // where drag started
61 static gint tolerance = 0;
62 static bool within_tolerance = false;
64 GtkType
65 sp_select_context_get_type(void)
66 {
67 static GType type = 0;
68 if (!type) {
69 GTypeInfo info = {
70 sizeof(SPSelectContextClass),
71 NULL, NULL,
72 (GClassInitFunc) sp_select_context_class_init,
73 NULL, NULL,
74 sizeof(SPSelectContext),
75 4,
76 (GInstanceInitFunc) sp_select_context_init,
77 NULL, /* value_table */
78 };
79 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPSelectContext", &info, (GTypeFlags)0);
80 }
81 return type;
82 }
84 static void
85 sp_select_context_class_init(SPSelectContextClass *klass)
86 {
87 GObjectClass *object_class = (GObjectClass *) klass;
88 SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
90 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
92 object_class->dispose = sp_select_context_dispose;
94 event_context_class->setup = sp_select_context_setup;
95 event_context_class->set = sp_select_context_set;
96 event_context_class->root_handler = sp_select_context_root_handler;
97 event_context_class->item_handler = sp_select_context_item_handler;
99 // cursors in select context
100 CursorSelectMouseover = sp_cursor_new_from_xpm(cursor_select_m_xpm , 1, 1);
101 CursorSelectDragging = sp_cursor_new_from_xpm(cursor_select_d_xpm , 1, 1);
102 // selection handles
103 handles[0] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_nw_xpm);
104 handles[1] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_ne_xpm);
105 handles[2] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_h_xpm);
106 handles[3] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_v_xpm);
107 handles[4] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_nw_xpm);
108 handles[5] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_n_xpm);
109 handles[6] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_ne_xpm);
110 handles[7] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_e_xpm);
111 handles[8] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_se_xpm);
112 handles[9] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_s_xpm);
113 handles[10] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_sw_xpm);
114 handles[11] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_w_xpm);
115 handles[12] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_center_xpm);
117 }
119 static void
120 sp_select_context_init(SPSelectContext *sc)
121 {
122 sc->dragging = FALSE;
123 sc->moved = FALSE;
124 sc->button_press_shift = false;
125 sc->button_press_ctrl = false;
126 sc->button_press_alt = false;
127 sc->_seltrans = NULL;
128 sc->_describer = NULL;
129 }
131 static void
132 sp_select_context_dispose(GObject *object)
133 {
134 SPSelectContext *sc = SP_SELECT_CONTEXT(object);
135 SPEventContext * ec = SP_EVENT_CONTEXT (object);
137 ec->enableGrDrag(false);
139 if (sc->grabbed) {
140 sp_canvas_item_ungrab(sc->grabbed, GDK_CURRENT_TIME);
141 sc->grabbed = NULL;
142 }
144 delete sc->_seltrans;
145 sc->_seltrans = NULL;
146 delete sc->_describer;
147 sc->_describer = NULL;
149 if (CursorSelectDragging) {
150 gdk_cursor_unref (CursorSelectDragging);
151 CursorSelectDragging = NULL;
152 }
153 if (CursorSelectMouseover) {
154 gdk_cursor_unref (CursorSelectMouseover);
155 CursorSelectMouseover = NULL;
156 }
158 G_OBJECT_CLASS(parent_class)->dispose(object);
159 }
161 static void
162 sp_select_context_setup(SPEventContext *ec)
163 {
164 SPSelectContext *select_context = SP_SELECT_CONTEXT(ec);
166 if (((SPEventContextClass *) parent_class)->setup) {
167 ((SPEventContextClass *) parent_class)->setup(ec);
168 }
170 SPDesktop *desktop = ec->desktop;
172 select_context->_describer = new Inkscape::SelectionDescriber(desktop->selection, desktop->messageStack());
174 select_context->_seltrans = new Inkscape::SelTrans(desktop);
176 sp_event_context_read(ec, "show");
177 sp_event_context_read(ec, "transform");
179 if (prefs_get_int_attribute("tools.select", "gradientdrag", 0) != 0) {
180 ec->enableGrDrag();
181 }
182 }
184 static void
185 sp_select_context_set(SPEventContext *ec, gchar const *key, gchar const *val)
186 {
187 SPSelectContext *sc = SP_SELECT_CONTEXT(ec);
189 if (!strcmp(key, "show")) {
190 if (val && !strcmp(val, "outline")) {
191 sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_OUTLINE);
192 } else {
193 sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_CONTENT);
194 }
195 }
196 }
198 static bool
199 sp_select_context_abort(SPEventContext *event_context)
200 {
201 SPDesktop *desktop = event_context->desktop;
202 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
203 Inkscape::SelTrans *seltrans = sc->_seltrans;
205 if (sc->dragging) {
206 if (sc->moved) { // cancel dragging an object
207 seltrans->ungrab();
208 sc->moved = FALSE;
209 sc->dragging = FALSE;
210 drag_escaped = 1;
212 if (sc->item) {
213 // only undo if the item is still valid
214 if (SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))) {
215 sp_document_undo(sp_desktop_document(desktop));
216 }
218 sp_object_unref( SP_OBJECT(sc->item), NULL);
219 } else if (sc->button_press_ctrl) {
220 // NOTE: This is a workaround to a bug.
221 // When the ctrl key is held, sc->item is not defined
222 // so in this case (only), we skip the object doc check
223 sp_document_undo(sp_desktop_document(desktop));
224 }
225 sc->item = NULL;
227 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));
228 return true;
229 }
230 } else {
231 NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();
232 if (b != NR::Nothing()) {
233 Inkscape::Rubberband::get()->stop();
234 rb_escaped = 1;
235 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));
236 return true;
237 }
238 }
239 return false;
240 }
242 bool
243 key_is_a_modifier (guint key) {
244 return (key == GDK_Alt_L ||
245 key == GDK_Alt_R ||
246 key == GDK_Control_L ||
247 key == GDK_Control_R ||
248 key == GDK_Shift_L ||
249 key == GDK_Shift_R ||
250 key == GDK_Meta_L || // Meta is when you press Shift+Alt (at least on my machine)
251 key == GDK_Meta_R);
252 }
254 void
255 sp_select_context_up_one_layer(SPDesktop *desktop)
256 {
257 /* Click in empty place, go up one level -- but don't leave a layer to root.
258 *
259 * (Rationale: we don't usually allow users to go to the root, since that
260 * detracts from the layer metaphor: objects at the root level can in front
261 * of or behind layers. Whereas it's fine to go to the root if editing
262 * a document that has no layers (e.g. a non-Inkscape document).)
263 *
264 * Once we support editing SVG "islands" (e.g. <svg> embedded in an xhtml
265 * document), we might consider further restricting the below to disallow
266 * leaving a layer to go to a non-layer.
267 */
268 SPObject *const current_layer = desktop->currentLayer();
269 if (current_layer) {
270 SPObject *const parent = SP_OBJECT_PARENT(current_layer);
271 if ( parent
272 && ( SP_OBJECT_PARENT(parent)
273 || !( SP_IS_GROUP(current_layer)
274 && ( SPGroup::LAYER
275 == SP_GROUP(current_layer)->layerMode() ) ) ) )
276 {
277 desktop->setCurrentLayer(parent);
278 if (SP_IS_GROUP(current_layer) && SPGroup::LAYER != SP_GROUP(current_layer)->layerMode())
279 sp_desktop_selection(desktop)->set(current_layer);
280 }
281 }
282 }
284 static gint
285 sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
286 {
287 gint ret = FALSE;
289 SPDesktop *desktop = event_context->desktop;
290 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
291 Inkscape::SelTrans *seltrans = sc->_seltrans;
293 tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);
295 // make sure we still have valid objects to move around
296 if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
297 sp_select_context_abort(event_context);
298 }
300 switch (event->type) {
301 case GDK_BUTTON_PRESS:
302 if (event->button.button == 1) {
303 /* Left mousebutton */
305 // save drag origin
306 xp = (gint) event->button.x;
307 yp = (gint) event->button.y;
308 within_tolerance = true;
310 // remember what modifiers were on before button press
311 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
312 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
313 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
315 if (event->button.state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) {
316 // if shift or ctrl was pressed, do not move objects;
317 // pass the event to root handler which will perform rubberband, shift-click, ctrl-click, ctrl-drag
318 } else {
319 sc->dragging = TRUE;
320 sc->moved = FALSE;
322 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
324 // remember the clicked item in sc->item:
325 sc->item = sp_event_context_find_item (desktop,
326 NR::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
327 sp_object_ref(sc->item, NULL);
329 rb_escaped = drag_escaped = 0;
331 if (sc->grabbed) {
332 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
333 sc->grabbed = NULL;
334 }
335 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->drawing),
336 GDK_KEY_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
337 GDK_POINTER_MOTION_MASK,
338 NULL, event->button.time);
339 sc->grabbed = SP_CANVAS_ITEM(desktop->drawing);
341 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
343 ret = TRUE;
344 }
345 } else if (event->button.button == 3) {
346 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
347 sp_select_context_abort(event_context);
348 }
349 break;
351 case GDK_ENTER_NOTIFY:
352 {
353 GdkCursor *cursor = gdk_cursor_new(GDK_FLEUR);
354 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, cursor);
355 gdk_cursor_destroy(cursor);
356 break;
357 }
359 case GDK_LEAVE_NOTIFY:
360 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
361 break;
363 case GDK_KEY_PRESS:
364 if (get_group0_keyval (&event->key) == GDK_space) {
365 if (sc->dragging && sc->grabbed) {
366 /* stamping mode: show content mode moving */
367 seltrans->stamp();
368 ret = TRUE;
369 }
370 }
371 break;
373 default:
374 break;
375 }
377 if (!ret) {
378 if (((SPEventContextClass *) parent_class)->item_handler)
379 ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);
380 }
382 return ret;
383 }
385 static gint
386 sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event)
387 {
388 SPItem *item = NULL;
389 SPItem *item_at_point = NULL, *group_at_point = NULL, *item_in_group = NULL;
390 gint ret = FALSE;
392 SPDesktop *desktop = event_context->desktop;
393 SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
394 Inkscape::SelTrans *seltrans = sc->_seltrans;
395 Inkscape::Selection *selection = sp_desktop_selection(desktop);
396 gdouble const nudge = prefs_get_double_attribute_limited("options.nudgedistance", "value", 2, 0, 1000); // in px
397 gdouble const offset = prefs_get_double_attribute_limited("options.defaultscale", "value", 2, 0, 1000);
398 tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);
399 int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
401 // make sure we still have valid objects to move around
402 if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
403 sp_select_context_abort(event_context);
404 }
406 switch (event->type) {
407 case GDK_2BUTTON_PRESS:
408 if (event->button.button == 1) {
409 if (!selection->isEmpty()) {
410 SPItem *clicked_item = (SPItem *) selection->itemList()->data;
411 if (SP_IS_GROUP (clicked_item)) { // enter group
412 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
413 sp_desktop_selection(desktop)->clear();
414 sc->dragging = false;
416 sp_canvas_end_forced_full_redraws(desktop->canvas);
417 } else { // switch tool
418 tools_switch_by_item (desktop, clicked_item);
419 }
420 } else {
421 sp_select_context_up_one_layer(desktop);
422 }
423 ret = TRUE;
424 }
425 break;
426 case GDK_BUTTON_PRESS:
427 if (event->button.button == 1) {
429 // save drag origin
430 xp = (gint) event->button.x;
431 yp = (gint) event->button.y;
432 within_tolerance = true;
434 NR::Point const button_pt(event->button.x, event->button.y);
435 NR::Point const p(desktop->w2d(button_pt));
436 Inkscape::Rubberband::get()->start(desktop, p);
437 if (sc->grabbed) {
438 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
439 sc->grabbed = NULL;
440 }
441 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
442 GDK_KEY_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK,
443 NULL, event->button.time);
444 sc->grabbed = SP_CANVAS_ITEM(desktop->acetate);
446 // remember what modifiers were on before button press
447 sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
448 sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
449 sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
451 sc->moved = FALSE;
453 rb_escaped = drag_escaped = 0;
455 ret = TRUE;
456 } else if (event->button.button == 3) {
457 // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
458 sp_select_context_abort(event_context);
459 }
460 break;
462 case GDK_MOTION_NOTIFY:
463 if (event->motion.state & GDK_BUTTON1_MASK) {
464 NR::Point const motion_pt(event->motion.x, event->motion.y);
465 NR::Point const p(desktop->w2d(motion_pt));
467 if ( within_tolerance
468 && ( abs( (gint) event->motion.x - xp ) < tolerance )
469 && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
470 break; // do not drag if we're within tolerance from origin
471 }
472 // Once the user has moved farther than tolerance from the original location
473 // (indicating they intend to move the object, not click), then always process the
474 // motion notify coordinates as given (no snapping back to origin)
475 within_tolerance = false;
477 if (sc->button_press_ctrl || sc->button_press_alt) {
478 // if ctrl or alt was pressed and it's not click, we want to drag rather than rubberband
479 sc->dragging = TRUE;
481 sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
482 }
484 if (sc->dragging) {
485 /* User has dragged fast, so we get events on root (lauris)*/
486 // not only that; we will end up here when ctrl-dragging as well
487 // and also when we started within tolerance, but trespassed tolerance outside of item
488 Inkscape::Rubberband::get()->stop();
489 item_at_point = desktop->item_at_point(NR::Point(event->button.x, event->button.y), FALSE);
490 if (!item_at_point) // if no item at this point, try at the click point (bug 1012200)
491 item_at_point = desktop->item_at_point(NR::Point(xp, yp), FALSE);
492 if (item_at_point || sc->moved || sc->button_press_alt) {
493 // drag only if starting from an item, or if something is already grabbed, or if alt-dragging
494 if (!sc->moved) {
495 item_in_group = desktop->item_at_point(NR::Point(event->button.x, event->button.y), TRUE);
496 group_at_point = desktop->group_at_point(NR::Point(event->button.x, event->button.y));
497 // if neither a group nor an item (possibly in a group) at point are selected, set selection to the item at point
498 if ((!item_in_group || !selection->includes(item_in_group)) &&
499 (!group_at_point || !selection->includes(group_at_point))
500 && !sc->button_press_alt) {
501 // select what is under cursor
502 if (!seltrans->isEmpty()) {
503 seltrans->resetState();
504 }
505 // when simply ctrl-dragging, we don't want to go into groups
506 if (item_at_point && !selection->includes(item_at_point))
507 selection->set(item_at_point);
508 } // otherwise, do not change selection so that dragging selected-within-group items, as well as alt-dragging, is possible
509 seltrans->grab(p, -1, -1, FALSE);
510 sc->moved = TRUE;
511 }
512 if (!seltrans->isEmpty())
513 seltrans->moveTo(p, event->button.state);
514 if (desktop->scroll_to_point(&p))
515 // unfortunately in complex drawings, gobbling results in losing grab of the object, for some mysterious reason
516 ; //gobble_motion_events(GDK_BUTTON1_MASK);
517 ret = TRUE;
518 } else {
519 sc->dragging = FALSE;
521 sp_canvas_end_forced_full_redraws(desktop->canvas);
522 }
523 } else {
524 if (Inkscape::Rubberband::get()->is_started()) {
525 Inkscape::Rubberband::get()->move(p);
526 gobble_motion_events(GDK_BUTTON1_MASK);
527 }
528 }
529 }
530 break;
531 case GDK_BUTTON_RELEASE:
532 xp = yp = 0;
533 if ((event->button.button == 1) && (sc->grabbed)) {
534 if (sc->dragging) {
535 if (sc->moved) {
536 // item has been moved
537 seltrans->ungrab();
538 sc->moved = FALSE;
539 } else if (sc->item && !drag_escaped) {
540 // item has not been moved -> simply a click, do selecting
541 if (!selection->isEmpty()) {
542 if (event->button.state & GDK_SHIFT_MASK) {
543 // with shift, toggle selection
544 seltrans->resetState();
545 selection->toggle(sc->item);
546 } else {
547 // without shift, increase state (i.e. toggle scale/rotation handles)
548 if (selection->includes(sc->item)) {
549 seltrans->increaseState();
550 } else {
551 seltrans->resetState();
552 selection->set(sc->item);
553 }
554 }
555 } else { // simple or shift click, no previous selection
556 seltrans->resetState();
557 selection->set(sc->item);
558 }
559 }
560 sc->dragging = FALSE;
562 sp_canvas_end_forced_full_redraws(desktop->canvas);
564 if (sc->item) {
565 sp_object_unref( SP_OBJECT(sc->item), NULL);
566 }
567 sc->item = NULL;
568 } else {
569 NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();
570 if (b != NR::Nothing() && !within_tolerance) {
571 // this was a rubberband drag
572 Inkscape::Rubberband::get()->stop();
573 seltrans->resetState();
574 // find out affected items:
575 GSList *items = sp_document_items_in_box(sp_desktop_document(desktop), desktop->dkey, b.assume());
576 if (event->button.state & GDK_SHIFT_MASK) {
577 // with shift, add to selection
578 selection->addList (items);
579 } else {
580 // without shift, simply select anew
581 selection->setList (items);
582 }
583 g_slist_free (items);
584 } else { // it was just a click, or a too small rubberband
585 Inkscape::Rubberband::get()->stop();
586 if (sc->button_press_shift && !rb_escaped && !drag_escaped) {
587 // this was a shift-click, select what was clicked upon
589 sc->button_press_shift = false;
591 if (sc->button_press_ctrl) {
592 // go into groups, honoring Alt
593 item = sp_event_context_find_item (desktop,
594 NR::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);
595 sc->button_press_ctrl = FALSE;
596 } else {
597 // don't go into groups, honoring Alt
598 item = sp_event_context_find_item (desktop,
599 NR::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
600 }
602 if (item) {
603 selection->toggle(item);
604 item = NULL;
605 }
607 } else if (sc->button_press_ctrl && !rb_escaped && !drag_escaped) { // ctrl-click
609 sc->button_press_ctrl = FALSE;
611 item = sp_event_context_find_item (desktop,
612 NR::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);
614 if (item) {
615 if (selection->includes(item)) {
616 seltrans->increaseState();
617 } else {
618 seltrans->resetState();
619 selection->set(item);
620 }
621 item = NULL;
622 }
624 } else { // click without shift, simply deselect, unless with Alt or something was cancelled
625 if (!selection->isEmpty()) {
626 if (!(rb_escaped) && !(drag_escaped) && !(event->button.state & GDK_MOD1_MASK))
627 selection->clear();
628 rb_escaped = 0;
629 ret = TRUE;
630 }
631 }
632 }
633 ret = TRUE;
634 }
635 if (sc->grabbed) {
636 sp_canvas_item_ungrab(sc->grabbed, event->button.time);
637 sc->grabbed = NULL;
638 }
640 desktop->updateNow();
641 }
642 sc->button_press_shift = false;
643 sc->button_press_ctrl = false;
644 sc->button_press_alt = false;
645 break;
647 case GDK_KEY_PRESS: // keybindings for select context
649 if (!key_is_a_modifier (get_group0_keyval (&event->key))) {
650 event_context->defaultMessageContext()->clear();
651 } else if (sc->grabbed || seltrans->isGrabbed()) {
652 // do not change the statusbar text when mousekey is down to move or transform the object,
653 // because the statusbar text is already updated somewhere else.
654 break;
655 } else {
656 sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,
657 _("<b>Ctrl</b>: select in groups, move hor/vert"),
658 _("<b>Shift</b>: toggle select, force rubberband, disable snapping"),
659 _("<b>Alt</b>: select under, move selected"));
660 // if Alt then change cursor to moving cursor:
661 guint keyval = get_group0_keyval(&event->key);
662 bool alt = ( MOD__ALT
663 || (keyval == GDK_Alt_L)
664 || (keyval == GDK_Alt_R)
665 || (keyval == GDK_Meta_L)
666 || (keyval == GDK_Meta_R));
667 if (alt) {
668 GdkCursor *cursor = gdk_cursor_new(GDK_FLEUR);
669 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, cursor);
670 gdk_cursor_destroy(cursor);
671 }
672 //*/
673 break;
674 }
676 switch (get_group0_keyval (&event->key)) {
677 case GDK_Left: // move selection left
678 case GDK_KP_Left:
679 case GDK_KP_4:
680 if (!MOD__CTRL) { // not ctrl
681 if (MOD__ALT) { // alt
682 if (MOD__SHIFT) sp_selection_move_screen(-10, 0); // shift
683 else sp_selection_move_screen(-1, 0); // no shift
684 }
685 else { // no alt
686 if (MOD__SHIFT) sp_selection_move(-10*nudge, 0); // shift
687 else sp_selection_move(-nudge, 0); // no shift
688 }
689 ret = TRUE;
690 }
691 break;
692 case GDK_Up: // move selection up
693 case GDK_KP_Up:
694 case GDK_KP_8:
695 if (!MOD__CTRL) { // not ctrl
696 if (MOD__ALT) { // alt
697 if (MOD__SHIFT) sp_selection_move_screen(0, 10); // shift
698 else sp_selection_move_screen(0, 1); // no shift
699 }
700 else { // no alt
701 if (MOD__SHIFT) sp_selection_move(0, 10*nudge); // shift
702 else sp_selection_move(0, nudge); // no shift
703 }
704 ret = TRUE;
705 }
706 break;
707 case GDK_Right: // move selection right
708 case GDK_KP_Right:
709 case GDK_KP_6:
710 if (!MOD__CTRL) { // not ctrl
711 if (MOD__ALT) { // alt
712 if (MOD__SHIFT) sp_selection_move_screen(10, 0); // shift
713 else sp_selection_move_screen(1, 0); // no shift
714 }
715 else { // no alt
716 if (MOD__SHIFT) sp_selection_move(10*nudge, 0); // shift
717 else sp_selection_move(nudge, 0); // no shift
718 }
719 ret = TRUE;
720 }
721 break;
722 case GDK_Down: // move selection down
723 case GDK_KP_Down:
724 case GDK_KP_2:
725 if (!MOD__CTRL) { // not ctrl
726 if (MOD__ALT) { // alt
727 if (MOD__SHIFT) sp_selection_move_screen(0, -10); // shift
728 else sp_selection_move_screen(0, -1); // no shift
729 }
730 else { // no alt
731 if (MOD__SHIFT) sp_selection_move(0, -10*nudge); // shift
732 else sp_selection_move(0, -nudge); // no shift
733 }
734 ret = TRUE;
735 }
736 break;
737 case GDK_Escape:
738 if (!sp_select_context_abort(event_context))
739 selection->clear();
740 ret = TRUE;
741 break;
742 case GDK_a:
743 case GDK_A:
744 if (MOD__CTRL_ONLY) {
745 sp_edit_select_all();
746 ret = TRUE;
747 }
748 break;
749 case GDK_space:
750 /* stamping mode: show outline mode moving */
751 /* FIXME: Is next condition ok? (lauris) */
752 if (sc->dragging && sc->grabbed) {
753 seltrans->stamp();
754 ret = TRUE;
755 }
756 break;
757 case GDK_x:
758 case GDK_X:
759 if (MOD__ALT_ONLY) {
760 desktop->setToolboxFocusTo ("altx");
761 ret = TRUE;
762 }
763 break;
764 case GDK_bracketleft:
765 if (MOD__ALT) {
766 sp_selection_rotate_screen(selection, 1);
767 } else if (MOD__CTRL) {
768 sp_selection_rotate(selection, 90);
769 } else if (snaps) {
770 sp_selection_rotate(selection, 180/snaps);
771 }
772 ret = TRUE;
773 break;
774 case GDK_bracketright:
775 if (MOD__ALT) {
776 sp_selection_rotate_screen(selection, -1);
777 } else if (MOD__CTRL) {
778 sp_selection_rotate(selection, -90);
779 } else if (snaps) {
780 sp_selection_rotate(selection, -180/snaps);
781 }
782 ret = TRUE;
783 break;
784 case GDK_less:
785 case GDK_comma:
786 if (MOD__ALT) {
787 sp_selection_scale_screen(selection, -2);
788 } else if (MOD__CTRL) {
789 sp_selection_scale_times(selection, 0.5);
790 } else {
791 sp_selection_scale(selection, -offset);
792 }
793 ret = TRUE;
794 break;
795 case GDK_greater:
796 case GDK_period:
797 if (MOD__ALT) {
798 sp_selection_scale_screen(selection, 2);
799 } else if (MOD__CTRL) {
800 sp_selection_scale_times(selection, 2);
801 } else {
802 sp_selection_scale(selection, offset);
803 }
804 ret = TRUE;
805 break;
806 case GDK_Return:
807 if (MOD__CTRL_ONLY) {
808 if (selection->singleItem()) {
809 SPItem *clicked_item = selection->singleItem();
810 if (SP_IS_GROUP (clicked_item)) { // enter group
811 desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
812 sp_desktop_selection(desktop)->clear();
813 } else {
814 SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));
815 }
816 }
817 ret = TRUE;
818 }
819 break;
820 case GDK_BackSpace:
821 if (MOD__CTRL_ONLY) {
822 sp_select_context_up_one_layer(desktop);
823 ret = TRUE;
824 }
825 break;
826 default:
827 break;
828 }
829 break;
830 case GDK_KEY_RELEASE:
831 if (key_is_a_modifier (get_group0_keyval (&event->key)))
832 event_context->defaultMessageContext()->clear();
833 // set cursor to default.
834 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);
835 break;
836 default:
837 break;
838 }
840 if (!ret) {
841 if (((SPEventContextClass *) parent_class)->root_handler)
842 ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
843 }
845 return ret;
846 }
849 /*
850 Local Variables:
851 mode:c++
852 c-file-style:"stroustrup"
853 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
854 indent-tabs-mode:nil
855 fill-column:99
856 End:
857 */
858 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :