src/ui/dialog/align-and-distribute.cpp

   1 /** @file
   2  * @brief Align and Distribute dialog - implementation
   3  */
   4 /* Authors:
   5  *   Bryce W. Harrington <bryce@bryceharrington.org>
   6  *   Aubanel MONNIER <aubi@libertysurf.fr>
   7  *   Frank Felfe <innerspace@iname.com>
   8  *   Lauris Kaplinski <lauris@kaplinski.com>
   9  *   Tim Dwyer <tgdwyer@gmail.com>
  10  *
  11  * Copyright (C) 1999-2004, 2005 Authors
  12  *
  13  * Released under GNU GPL.  Read the file 'COPYING' for more information.
  14  */
  15
  16
  17 #ifdef HAVE_CONFIG_H
  18 # include <config.h>
  19 #endif
  20
  21 #include <gtkmm/spinbutton.h>
  22
  23 #include "desktop-handles.h"
  24 #include "unclump.h"
  25 #include "document.h"
  26 #include "enums.h"
  27 #include "graphlayout/graphlayout.h"
  28 #include "inkscape.h"
  29 #include "macros.h"
  30 #include "preferences.h"
  31 #include "removeoverlap/removeoverlap.h"
  32 #include "selection.h"
  33 #include "sp-flowtext.h"
  34 #include "sp-item-transform.h"
  35 #include "sp-text.h"
  36 #include "text-editing.h"
  37 #include "tools-switch.h"
  38 #include "ui/icon-names.h"
  39 #include "ui/tool/node-tool.h"
  40 #include "ui/tool/multi-path-manipulator.h"
  41 #include "util/glib-list-iterators.h"
  42 #include "verbs.h"
  43 #include "widgets/icon.h"
  44
  45 #include "align-and-distribute.h"
  46
  47 namespace Inkscape {
  48 namespace UI {
  49 namespace Dialog {
  50
  51 /////////helper classes//////////////////////////////////
  52
  53 class Action {
  54 public :
  55     Action(const Glib::ustring &id,
  56            const Glib::ustring &tiptext,
  57            guint row, guint column,
  58            Gtk::Table &parent,
  59            Gtk::Tooltips &tooltips,
  60            AlignAndDistribute &dialog):
  61         _dialog(dialog),
  62         _id(id),
  63         _parent(parent)
  64     {
  65         Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( _id, Inkscape::ICON_SIZE_LARGE_TOOLBAR) );
  66         Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
  67         pButton->set_relief(Gtk::RELIEF_NONE);
  68         pIcon->show();
  69         pButton->add(*pIcon);
  70         pButton->show();
  71
  72         pButton->signal_clicked()
  73             .connect(sigc::mem_fun(*this, &Action::on_button_click));
  74         tooltips.set_tip(*pButton, tiptext);
  75         parent.attach(*pButton, column, column+1, row, row+1, Gtk::FILL, Gtk::FILL);
  76     }
  77     virtual ~Action(){}
  78
  79     AlignAndDistribute &_dialog;
  80
  81 private :
  82     virtual void on_button_click(){}
  83
  84     Glib::ustring _id;
  85     Gtk::Table &_parent;
  86 };
  87
  88
  89 class ActionAlign : public Action {
  90 public :
  91     struct Coeffs {
  92        double mx0, mx1, my0, my1;
  93        double sx0, sx1, sy0, sy1;
  94     };
  95     ActionAlign(const Glib::ustring &id,
  96                 const Glib::ustring &tiptext,
  97                 guint row, guint column,
  98                 AlignAndDistribute &dialog,
  99                 guint coeffIndex):
 100         Action(id, tiptext, row, column,
 101                dialog.align_table(), dialog.tooltips(), dialog),
 102         _index(coeffIndex),
 103         _dialog(dialog)
 104     {}
 105
 106 private :
 107
 108     virtual void on_button_click() {
 109         //Retreive selected objects
 110         SPDesktop *desktop = _dialog.getDesktop();
 111         if (!desktop) return;
 112
 113         Inkscape::Selection *selection = sp_desktop_selection(desktop);
 114         if (!selection) return;
 115
 116         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 117         bool sel_as_group = prefs->getBool("/dialogs/align/sel-as-groups");
 118
 119         using Inkscape::Util::GSListConstIterator;
 120         std::list<SPItem *> selected;
 121         selected.insert<GSListConstIterator<SPItem *> >(selected.end(), selection->itemList(), NULL);
 122         if (selected.empty()) return;
 123
 124         Geom::Point mp; //Anchor point
 125         AlignAndDistribute::AlignTarget target = _dialog.getAlignTarget();
 126         const Coeffs &a= _allCoeffs[_index];
 127         switch (target)
 128         {
 129         case AlignAndDistribute::LAST:
 130         case AlignAndDistribute::FIRST:
 131         case AlignAndDistribute::BIGGEST:
 132         case AlignAndDistribute::SMALLEST:
 133         {
 134             //Check 2 or more selected objects
 135             std::list<SPItem *>::iterator second(selected.begin());
 136             ++second;
 137             if (second == selected.end())
 138                 return;
 139             //Find the master (anchor on which the other objects are aligned)
 140             std::list<SPItem *>::iterator master(
 141                 _dialog.find_master (
 142                     selected,
 143                     (a.mx0 != 0.0) ||
 144                     (a.mx1 != 0.0) )
 145                 );
 146             //remove the master from the selection
 147             SPItem * thing = *master;
 148             // TODO: either uncomment or remove the following commented lines, depending on which
 149             //       behaviour of moving objects makes most sense; also cf. discussion at
 150             //       https://bugs.launchpad.net/inkscape/+bug/255933
 151             /*if (!sel_as_group) { */
 152                 selected.erase(master);
 153             /*}*/
 154             //Compute the anchor point
 155             Geom::OptRect b = sp_item_bbox_desktop (thing);
 156             if (b) {
 157                 mp = Geom::Point(a.mx0 * b->min()[Geom::X] + a.mx1 * b->max()[Geom::X],
 158                                a.my0 * b->min()[Geom::Y] + a.my1 * b->max()[Geom::Y]);
 159             } else {
 160                 return;
 161             }
 162             break;
 163         }
 164
 165         case AlignAndDistribute::PAGE:
 166             mp = Geom::Point(a.mx1 * sp_document_width(sp_desktop_document(desktop)),
 167                            a.my1 * sp_document_height(sp_desktop_document(desktop)));
 168             break;
 169
 170         case AlignAndDistribute::DRAWING:
 171         {
 172             Geom::OptRect b = sp_item_bbox_desktop
 173                 ( (SPItem *) sp_document_root (sp_desktop_document (desktop)) );
 174             if (b) {
 175                 mp = Geom::Point(a.mx0 * b->min()[Geom::X] + a.mx1 * b->max()[Geom::X],
 176                                a.my0 * b->min()[Geom::Y] + a.my1 * b->max()[Geom::Y]);
 177             } else {
 178                 return;
 179             }
 180             break;
 181         }
 182
 183         case AlignAndDistribute::SELECTION:
 184         {
 185             Geom::OptRect b =  selection->bounds();
 186             if (b) {
 187                 mp = Geom::Point(a.mx0 * b->min()[Geom::X] + a.mx1 * b->max()[Geom::X],
 188                                a.my0 * b->min()[Geom::Y] + a.my1 * b->max()[Geom::Y]);
 189             } else {
 190                 return;
 191             }
 192             break;
 193         }
 194
 195         default:
 196             g_assert_not_reached ();
 197             break;
 198         };  // end of switch
 199
 200         // Top hack: temporarily set clone compensation to unmoved, so that we can align/distribute
 201         // clones with their original (and the move of the original does not disturb the
 202         // clones). The only problem with this is that if there are outside-of-selection clones of
 203         // a selected original, they will be unmoved too, possibly contrary to user's
 204         // expecation. However this is a minor point compared to making align/distribute always
 205         // work as expected, and "unmoved" is the default option anyway.
 206         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 207         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 208
 209         bool changed = false;
 210         Geom::OptRect b;
 211         if (sel_as_group)
 212             b = selection->bounds();
 213
 214         //Move each item in the selected list separately
 215         for (std::list<SPItem *>::iterator it(selected.begin());
 216              it != selected.end();
 217              it++)
 218         {
 219             sp_document_ensure_up_to_date(sp_desktop_document (desktop));
 220             if (!sel_as_group)
 221                 b = sp_item_bbox_desktop (*it);
 222             if (b) {
 223                 Geom::Point const sp(a.sx0 * b->min()[Geom::X] + a.sx1 * b->max()[Geom::X],
 224                                      a.sy0 * b->min()[Geom::Y] + a.sy1 * b->max()[Geom::Y]);
 225                 Geom::Point const mp_rel( mp - sp );
 226                 if (LInfty(mp_rel) > 1e-9) {
 227                     sp_item_move_rel(*it, Geom::Translate(mp_rel));
 228                     changed = true;
 229                 }
 230             }
 231         }
 232
 233         // restore compensation setting
 234         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 235
 236         if (changed) {
 237             sp_document_done ( sp_desktop_document (desktop) , SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 238                                _("Align"));
 239         }
 240
 241
 242     }
 243     guint _index;
 244     AlignAndDistribute &_dialog;
 245
 246     static const Coeffs _allCoeffs[10];
 247
 248 };
 249 ActionAlign::Coeffs const ActionAlign::_allCoeffs[10] = {
 250     {1., 0., 0., 0., 0., 1., 0., 0.},
 251     {1., 0., 0., 0., 1., 0., 0., 0.},
 252     {.5, .5, 0., 0., .5, .5, 0., 0.},
 253     {0., 1., 0., 0., 0., 1., 0., 0.},
 254     {0., 1., 0., 0., 1., 0., 0., 0.},
 255     {0., 0., 0., 1., 0., 0., 1., 0.},
 256     {0., 0., 0., 1., 0., 0., 0., 1.},
 257     {0., 0., .5, .5, 0., 0., .5, .5},
 258     {0., 0., 1., 0., 0., 0., 1., 0.},
 259     {0., 0., 1., 0., 0., 0., 0., 1.}
 260 };
 261
 262 BBoxSort::BBoxSort(SPItem *pItem, Geom::Rect bounds, Geom::Dim2 orientation, double kBegin, double kEnd) :
 263         item(pItem),
 264         bbox (bounds)
 265 {
 266         anchor = kBegin * bbox.min()[orientation] + kEnd * bbox.max()[orientation];
 267 }
 268 BBoxSort::BBoxSort(const BBoxSort &rhs) :
 269         //NOTE :  this copy ctor is called O(sort) when sorting the vector
 270         //this is bad. The vector should be a vector of pointers.
 271         //But I'll wait the bohem GC before doing that
 272         item(rhs.item), anchor(rhs.anchor), bbox(rhs.bbox)
 273 {
 274 }
 275
 276 bool operator< (const BBoxSort &a, const BBoxSort &b)
 277 {
 278     return (a.anchor < b.anchor);
 279 }
 280
 281 class ActionDistribute : public Action {
 282 public :
 283     ActionDistribute(const Glib::ustring &id,
 284                      const Glib::ustring &tiptext,
 285                      guint row, guint column,
 286                      AlignAndDistribute &dialog,
 287                      bool onInterSpace,
 288                      Geom::Dim2 orientation,
 289                      double kBegin, double kEnd
 290         ):
 291         Action(id, tiptext, row, column,
 292                dialog.distribute_table(), dialog.tooltips(), dialog),
 293         _dialog(dialog),
 294         _onInterSpace(onInterSpace),
 295         _orientation(orientation),
 296         _kBegin(kBegin),
 297         _kEnd( kEnd)
 298     {}
 299
 300 private :
 301     virtual void on_button_click() {
 302         //Retreive selected objects
 303         SPDesktop *desktop = _dialog.getDesktop();
 304         if (!desktop) return;
 305
 306         Inkscape::Selection *selection = sp_desktop_selection(desktop);
 307         if (!selection) return;
 308
 309         using Inkscape::Util::GSListConstIterator;
 310         std::list<SPItem *> selected;
 311         selected.insert<GSListConstIterator<SPItem *> >(selected.end(), selection->itemList(), NULL);
 312         if (selected.empty()) return;
 313
 314         //Check 2 or more selected objects
 315         std::list<SPItem *>::iterator second(selected.begin());
 316         ++second;
 317         if (second == selected.end()) return;
 318
 319
 320         std::vector< BBoxSort  > sorted;
 321         for (std::list<SPItem *>::iterator it(selected.begin());
 322             it != selected.end();
 323             ++it)
 324         {
 325             Geom::OptRect bbox = sp_item_bbox_desktop(*it);
 326             if (bbox) {
 327                 sorted.push_back(BBoxSort(*it, *bbox, _orientation, _kBegin, _kEnd));
 328             }
 329         }
 330         //sort bbox by anchors
 331         std::sort(sorted.begin(), sorted.end());
 332
 333         // see comment in ActionAlign above
 334         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 335         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 336         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 337
 338         unsigned int len = sorted.size();
 339         bool changed = false;
 340         if (_onInterSpace)
 341         {
 342             //overall bboxes span
 343             float dist = (sorted.back().bbox.max()[_orientation] -
 344                           sorted.front().bbox.min()[_orientation]);
 345             //space eaten by bboxes
 346             float span = 0;
 347             for (unsigned int i = 0; i < len; i++)
 348             {
 349                 span += sorted[i].bbox[_orientation].extent();
 350             }
 351             //new distance between each bbox
 352             float step = (dist - span) / (len - 1);
 353             float pos = sorted.front().bbox.min()[_orientation];
 354             for ( std::vector<BBoxSort> ::iterator it (sorted.begin());
 355                   it < sorted.end();
 356                   it ++ )
 357             {
 358                 if (!NR_DF_TEST_CLOSE (pos, it->bbox.min()[_orientation], 1e-6)) {
 359                     Geom::Point t(0.0, 0.0);
 360                     t[_orientation] = pos - it->bbox.min()[_orientation];
 361                     sp_item_move_rel(it->item, Geom::Translate(t));
 362                     changed = true;
 363                 }
 364                 pos += it->bbox[_orientation].extent();
 365                 pos += step;
 366             }
 367         }
 368         else
 369         {
 370             //overall anchor span
 371             float dist = sorted.back().anchor - sorted.front().anchor;
 372             //distance between anchors
 373             float step = dist / (len - 1);
 374
 375             for ( unsigned int i = 0; i < len ; i ++ )
 376             {
 377                 BBoxSort & it(sorted[i]);
 378                 //new anchor position
 379                 float pos = sorted.front().anchor + i * step;
 380                 //Don't move if we are really close
 381                 if (!NR_DF_TEST_CLOSE (pos, it.anchor, 1e-6)) {
 382                     //Compute translation
 383                     Geom::Point t(0.0, 0.0);
 384                     t[_orientation] = pos - it.anchor;
 385                     //translate
 386                     sp_item_move_rel(it.item, Geom::Translate(t));
 387                     changed = true;
 388                 }
 389             }
 390         }
 391
 392         // restore compensation setting
 393         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 394
 395         if (changed) {
 396             sp_document_done ( sp_desktop_document (desktop), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 397                                _("Distribute"));
 398         }
 399     }
 400     guint _index;
 401     AlignAndDistribute &_dialog;
 402     bool _onInterSpace;
 403     Geom::Dim2 _orientation;
 404
 405     double _kBegin;
 406     double _kEnd;
 407
 408 };
 409
 410
 411 class ActionNode : public Action {
 412 public :
 413     ActionNode(const Glib::ustring &id,
 414                const Glib::ustring &tiptext,
 415                guint column,
 416                AlignAndDistribute &dialog,
 417                Geom::Dim2 orientation, bool distribute):
 418         Action(id, tiptext, 0, column,
 419                dialog.nodes_table(), dialog.tooltips(), dialog),
 420         _orientation(orientation),
 421         _distribute(distribute)
 422     {}
 423
 424 private :
 425     Geom::Dim2 _orientation;
 426     bool _distribute;
 427     virtual void on_button_click()
 428     {
 429
 430         if (!_dialog.getDesktop()) return;
 431         SPEventContext *event_context = sp_desktop_event_context(_dialog.getDesktop());
 432         if (!INK_IS_NODE_TOOL (event_context)) return;
 433         InkNodeTool *nt = INK_NODE_TOOL(event_context);
 434
 435         if (_distribute)
 436             nt->_multipath->distributeNodes(_orientation);
 437         else
 438             nt->_multipath->alignNodes(_orientation);
 439
 440     }
 441 };
 442
 443 class ActionRemoveOverlaps : public Action {
 444 private:
 445     Gtk::Label removeOverlapXGapLabel;
 446     Gtk::Label removeOverlapYGapLabel;
 447     Gtk::SpinButton removeOverlapXGap;
 448     Gtk::SpinButton removeOverlapYGap;
 449
 450 public:
 451     ActionRemoveOverlaps(Glib::ustring const &id,
 452                          Glib::ustring const &tiptext,
 453                          guint row,
 454                          guint column,
 455                          AlignAndDistribute &dialog) :
 456         Action(id, tiptext, row, column + 4,
 457                dialog.removeOverlap_table(), dialog.tooltips(), dialog)
 458     {
 459         dialog.removeOverlap_table().set_col_spacings(3);
 460
 461         removeOverlapXGap.set_digits(1);
 462         removeOverlapXGap.set_size_request(60, -1);
 463         removeOverlapXGap.set_increments(1.0, 0);
 464         removeOverlapXGap.set_range(-1000.0, 1000.0);
 465         removeOverlapXGap.set_value(0);
 466         dialog.tooltips().set_tip(removeOverlapXGap,
 467                                   _("Minimum horizontal gap (in px units) between bounding boxes"));
 468         //TRANSLATORS: only translate "string" in "context|string".
 469         // For more details, see http://developer.gnome.org/doc/API/2.0/glib/glib-I18N.html#Q-:CAPS
 470         // "H:" stands for horizontal gap
 471         removeOverlapXGapLabel.set_label(Q_("gap|H:"));
 472
 473         removeOverlapYGap.set_digits(1);
 474         removeOverlapYGap.set_size_request(60, -1);
 475         removeOverlapYGap.set_increments(1.0, 0);
 476         removeOverlapYGap.set_range(-1000.0, 1000.0);
 477         removeOverlapYGap.set_value(0);
 478         dialog.tooltips().set_tip(removeOverlapYGap,
 479                                   _("Minimum vertical gap (in px units) between bounding boxes"));
 480         /* TRANSLATORS: Vertical gap */
 481         removeOverlapYGapLabel.set_label(_("V:"));
 482
 483         dialog.removeOverlap_table().attach(removeOverlapXGapLabel, column, column+1, row, row+1, Gtk::FILL, Gtk::FILL);
 484         dialog.removeOverlap_table().attach(removeOverlapXGap, column+1, column+2, row, row+1, Gtk::FILL, Gtk::FILL);
 485         dialog.removeOverlap_table().attach(removeOverlapYGapLabel, column+2, column+3, row, row+1, Gtk::FILL, Gtk::FILL);
 486         dialog.removeOverlap_table().attach(removeOverlapYGap, column+3, column+4, row, row+1, Gtk::FILL, Gtk::FILL);
 487
 488     }
 489
 490 private :
 491     virtual void on_button_click()
 492     {
 493         if (!_dialog.getDesktop()) return;
 494
 495         // see comment in ActionAlign above
 496         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 497         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 498         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 499
 500         // xGap and yGap are the minimum space required between bounding rectangles.
 501         double const xGap = removeOverlapXGap.get_value();
 502         double const yGap = removeOverlapYGap.get_value();
 503         removeoverlap(sp_desktop_selection(_dialog.getDesktop())->itemList(),
 504                       xGap, yGap);
 505
 506         // restore compensation setting
 507         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 508
 509         sp_document_done(sp_desktop_document(_dialog.getDesktop()), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 510                          _("Remove overlaps"));
 511     }
 512 };
 513
 514 class ActionGraphLayout : public Action {
 515 public:
 516     ActionGraphLayout(Glib::ustring const &id,
 517                          Glib::ustring const &tiptext,
 518                          guint row,
 519                          guint column,
 520                          AlignAndDistribute &dialog) :
 521         Action(id, tiptext, row, column + 4,
 522                dialog.graphLayout_table(), dialog.tooltips(), dialog)
 523     {}
 524
 525 private :
 526     virtual void on_button_click()
 527     {
 528         if (!_dialog.getDesktop()) return;
 529
 530         // see comment in ActionAlign above
 531         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 532         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 533         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 534
 535         graphlayout(sp_desktop_selection(_dialog.getDesktop())->itemList());
 536
 537         // restore compensation setting
 538         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 539
 540         sp_document_done(sp_desktop_document(_dialog.getDesktop()), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 541                          _("Arrange connector network"));
 542     }
 543 };
 544
 545 class ActionUnclump : public Action {
 546 public :
 547     ActionUnclump(const Glib::ustring &id,
 548                const Glib::ustring &tiptext,
 549                guint row,
 550                guint column,
 551                AlignAndDistribute &dialog):
 552         Action(id, tiptext, row, column,
 553                dialog.distribute_table(), dialog.tooltips(), dialog)
 554     {}
 555
 556 private :
 557     virtual void on_button_click()
 558     {
 559         if (!_dialog.getDesktop()) return;
 560
 561         // see comment in ActionAlign above
 562         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 563         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 564         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 565
 566         unclump ((GSList *) sp_desktop_selection(_dialog.getDesktop())->itemList());
 567
 568         // restore compensation setting
 569         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 570
 571         sp_document_done (sp_desktop_document (_dialog.getDesktop()), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 572                           _("Unclump"));
 573     }
 574 };
 575
 576 class ActionRandomize : public Action {
 577 public :
 578     ActionRandomize(const Glib::ustring &id,
 579                const Glib::ustring &tiptext,
 580                guint row,
 581                guint column,
 582                AlignAndDistribute &dialog):
 583         Action(id, tiptext, row, column,
 584                dialog.distribute_table(), dialog.tooltips(), dialog)
 585     {}
 586
 587 private :
 588     virtual void on_button_click()
 589     {
 590         SPDesktop *desktop = _dialog.getDesktop();
 591         if (!desktop) return;
 592
 593         Inkscape::Selection *selection = sp_desktop_selection(desktop);
 594         if (!selection) return;
 595
 596         using Inkscape::Util::GSListConstIterator;
 597         std::list<SPItem *> selected;
 598         selected.insert<GSListConstIterator<SPItem *> >(selected.end(), selection->itemList(), NULL);
 599         if (selected.empty()) return;
 600
 601         //Check 2 or more selected objects
 602         if (selected.size() < 2) return;
 603
 604         Geom::OptRect sel_bbox = selection->bounds();
 605         if (!sel_bbox) {
 606             return;
 607         }
 608
 609         // This bbox is cached between calls to randomize, so that there's no growth nor shrink
 610         // nor drift on sequential randomizations. Discard cache on global (or better active
 611         // desktop's) selection_change signal.
 612         if (!_dialog.randomize_bbox) {
 613             _dialog.randomize_bbox = *sel_bbox;
 614         }
 615
 616         // see comment in ActionAlign above
 617         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 618         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 619         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 620
 621         for (std::list<SPItem *>::iterator it(selected.begin());
 622             it != selected.end();
 623             ++it)
 624         {
 625             sp_document_ensure_up_to_date(sp_desktop_document (desktop));
 626             Geom::OptRect item_box = sp_item_bbox_desktop (*it);
 627             if (item_box) {
 628                 // find new center, staying within bbox
 629                 double x = _dialog.randomize_bbox->min()[Geom::X] + (*item_box)[Geom::X].extent() /2 +
 630                     g_random_double_range (0, (*_dialog.randomize_bbox)[Geom::X].extent() - (*item_box)[Geom::X].extent());
 631                 double y = _dialog.randomize_bbox->min()[Geom::Y] + (*item_box)[Geom::Y].extent()/2 +
 632                     g_random_double_range (0, (*_dialog.randomize_bbox)[Geom::Y].extent() - (*item_box)[Geom::Y].extent());
 633                 // displacement is the new center minus old:
 634                 Geom::Point t = Geom::Point (x, y) - 0.5*(item_box->max() + item_box->min());
 635                 sp_item_move_rel(*it, Geom::Translate(t));
 636             }
 637         }
 638
 639         // restore compensation setting
 640         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 641
 642         sp_document_done (sp_desktop_document (desktop), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 643                           _("Randomize positions"));
 644     }
 645 };
 646
 647 struct Baselines
 648 {
 649     SPItem *_item;
 650     Geom::Point _base;
 651     Geom::Dim2 _orientation;
 652     Baselines(SPItem *item, Geom::Point base, Geom::Dim2 orientation) :
 653         _item (item),
 654         _base (base),
 655         _orientation (orientation)
 656     {}
 657 };
 658
 659 bool operator< (const Baselines &a, const Baselines &b)
 660 {
 661     return (a._base[a._orientation] < b._base[b._orientation]);
 662 }
 663
 664 class ActionBaseline : public Action {
 665 public :
 666     ActionBaseline(const Glib::ustring &id,
 667                const Glib::ustring &tiptext,
 668                guint row,
 669                guint column,
 670                AlignAndDistribute &dialog,
 671                Gtk::Table &table,
 672                Geom::Dim2 orientation, bool distribute):
 673         Action(id, tiptext, row, column,
 674                table, dialog.tooltips(), dialog),
 675         _orientation(orientation),
 676         _distribute(distribute)
 677     {}
 678
 679 private :
 680     Geom::Dim2 _orientation;
 681     bool _distribute;
 682     virtual void on_button_click()
 683     {
 684         SPDesktop *desktop = _dialog.getDesktop();
 685         if (!desktop) return;
 686
 687         Inkscape::Selection *selection = sp_desktop_selection(desktop);
 688         if (!selection) return;
 689
 690         using Inkscape::Util::GSListConstIterator;
 691         std::list<SPItem *> selected;
 692         selected.insert<GSListConstIterator<SPItem *> >(selected.end(), selection->itemList(), NULL);
 693         if (selected.empty()) return;
 694
 695         //Check 2 or more selected objects
 696         if (selected.size() < 2) return;
 697
 698         Geom::Point b_min = Geom::Point (HUGE_VAL, HUGE_VAL);
 699         Geom::Point b_max = Geom::Point (-HUGE_VAL, -HUGE_VAL);
 700
 701         std::vector<Baselines> sorted;
 702
 703         for (std::list<SPItem *>::iterator it(selected.begin());
 704             it != selected.end();
 705             ++it)
 706         {
 707             if (SP_IS_TEXT (*it) || SP_IS_FLOWTEXT (*it)) {
 708                 Inkscape::Text::Layout const *layout = te_get_layout(*it);
 709                 Geom::Point base = layout->characterAnchorPoint(layout->begin()) * sp_item_i2d_affine(*it);
 710                 if (base[Geom::X] < b_min[Geom::X]) b_min[Geom::X] = base[Geom::X];
 711                 if (base[Geom::Y] < b_min[Geom::Y]) b_min[Geom::Y] = base[Geom::Y];
 712                 if (base[Geom::X] > b_max[Geom::X]) b_max[Geom::X] = base[Geom::X];
 713                 if (base[Geom::Y] > b_max[Geom::Y]) b_max[Geom::Y] = base[Geom::Y];
 714
 715                 Baselines b (*it, base, _orientation);
 716                 sorted.push_back(b);
 717             }
 718         }
 719
 720         if (sorted.size() <= 1) return;
 721
 722         //sort baselines
 723         std::sort(sorted.begin(), sorted.end());
 724
 725         bool changed = false;
 726
 727         if (_distribute) {
 728             double step = (b_max[_orientation] - b_min[_orientation])/(sorted.size() - 1);
 729             for (unsigned int i = 0; i < sorted.size(); i++) {
 730                 SPItem *item = sorted[i]._item;
 731                 Geom::Point base = sorted[i]._base;
 732                 Geom::Point t(0.0, 0.0);
 733                 t[_orientation] = b_min[_orientation] + step * i - base[_orientation];
 734                 sp_item_move_rel(item, Geom::Translate(t));
 735                 changed = true;
 736             }
 737
 738             if (changed) {
 739                 sp_document_done (sp_desktop_document (desktop), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 740                                   _("Distribute text baselines"));
 741             }
 742
 743         } else {
 744             for (std::list<SPItem *>::iterator it(selected.begin());
 745                  it != selected.end();
 746                  ++it)
 747             {
 748                 if (SP_IS_TEXT (*it) || SP_IS_FLOWTEXT (*it)) {
 749                     Inkscape::Text::Layout const *layout = te_get_layout(*it);
 750                     Geom::Point base = layout->characterAnchorPoint(layout->begin()) * sp_item_i2d_affine(*it);
 751                     Geom::Point t(0.0, 0.0);
 752                     t[_orientation] = b_min[_orientation] - base[_orientation];
 753                     sp_item_move_rel(*it, Geom::Translate(t));
 754                     changed = true;
 755                 }
 756             }
 757
 758             if (changed) {
 759                 sp_document_done (sp_desktop_document (desktop), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 760                                   _("Align text baselines"));
 761             }
 762         }
 763     }
 764 };
 765
 766
 767
 768 void on_tool_changed(Inkscape::Application */*inkscape*/, SPEventContext */*context*/, AlignAndDistribute *daad)
 769 {
 770     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 771     if (desktop && sp_desktop_event_context(desktop))
 772         daad->setMode(tools_active(desktop) == TOOLS_NODES);
 773 }
 774
 775 void on_selection_changed(Inkscape::Application */*inkscape*/, Inkscape::Selection */*selection*/, AlignAndDistribute *daad)
 776 {
 777     daad->randomize_bbox = Geom::OptRect();
 778 }
 779
 780 /////////////////////////////////////////////////////////
 781
 782
 783
 784
 785 AlignAndDistribute::AlignAndDistribute()
 786     : UI::Widget::Panel ("", "/dialogs/align", SP_VERB_DIALOG_ALIGN_DISTRIBUTE),
 787       randomize_bbox(),
 788       _alignFrame(_("Align")),
 789       _distributeFrame(_("Distribute")),
 790       _removeOverlapFrame(_("Remove overlaps")),
 791       _graphLayoutFrame(_("Connector network layout")),
 792       _nodesFrame(_("Nodes")),
 793       _alignTable(2, 6, true),
 794       _distributeTable(3, 6, true),
 795       _removeOverlapTable(1, 5, false),
 796       _graphLayoutTable(1, 5, false),
 797       _nodesTable(1, 4, true),
 798       _anchorLabel(_("Relative to: ")),
 799       _selgrpLabel(_("Treat selection as group: "))
 800 {
 801     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 802
 803     //Instanciate the align buttons
 804     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_RIGHT_TO_ANCHOR,
 805                    _("Align right edges of objects to the left edge of the anchor"),
 806                    0, 0);
 807     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_LEFT,
 808                    _("Align left edges"),
 809                    0, 1);
 810     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_CENTER,
 811                    _("Center objects horizontally"),
 812                    0, 2);
 813     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_RIGHT,
 814                    _("Align right sides"),
 815                    0, 3);
 816     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_LEFT_TO_ANCHOR,
 817                    _("Align left edges of objects to the right edge of the anchor"),
 818                    0, 4);
 819     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_BOTTOM_TO_ANCHOR,
 820                    _("Align bottom edges of objects to the top edge of the anchor"),
 821                    1, 0);
 822     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_TOP,
 823                    _("Align top edges"),
 824                    1, 1);
 825     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_CENTER,
 826                    _("Center on horizontal axis"),
 827                    1, 2);
 828     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_BOTTOM,
 829                    _("Align bottom edges"),
 830                    1, 3);
 831     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_TOP_TO_ANCHOR,
 832                    _("Align top edges of objects to the bottom edge of the anchor"),
 833                    1, 4);
 834
 835     //Baseline aligns
 836     addBaselineButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_BASELINE,
 837                    _("Align baseline anchors of texts horizontally"),
 838                       0, 5, this->align_table(), Geom::X, false);
 839     addBaselineButton(INKSCAPE_ICON_ALIGN_VERTICAL_BASELINE,
 840                    _("Align baselines of texts"),
 841                      1, 5, this->align_table(), Geom::Y, false);
 842
 843     //The distribute buttons
 844     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_GAPS,
 845                         _("Make horizontal gaps between objects equal"),
 846                         0, 4, true, Geom::X, .5, .5);
 847
 848     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_LEFT,
 849                         _("Distribute left edges equidistantly"),
 850                         0, 1, false, Geom::X, 1., 0.);
 851     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_CENTER,
 852                         _("Distribute centers equidistantly horizontally"),
 853                         0, 2, false, Geom::X, .5, .5);
 854     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_RIGHT,
 855                         _("Distribute right edges equidistantly"),
 856                         0, 3, false, Geom::X, 0., 1.);
 857
 858     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_GAPS,
 859                         _("Make vertical gaps between objects equal"),
 860                         1, 4, true, Geom::Y, .5, .5);
 861
 862     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_TOP,
 863                         _("Distribute top edges equidistantly"),
 864                         1, 1, false, Geom::Y, 0, 1);
 865     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_CENTER,
 866                         _("Distribute centers equidistantly vertically"),
 867                         1, 2, false, Geom::Y, .5, .5);
 868     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_BOTTOM,
 869                         _("Distribute bottom edges equidistantly"),
 870                         1, 3, false, Geom::Y, 1., 0.);
 871
 872     //Baseline distribs
 873     addBaselineButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_BASELINE,
 874                    _("Distribute baseline anchors of texts horizontally"),
 875                       0, 5, this->distribute_table(), Geom::X, true);
 876     addBaselineButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_BASELINE,
 877                    _("Distribute baselines of texts vertically"),
 878                      1, 5, this->distribute_table(), Geom::Y, true);
 879
 880     //Randomize & Unclump
 881     addRandomizeButton(INKSCAPE_ICON_DISTRIBUTE_RANDOMIZE,
 882                         _("Randomize centers in both dimensions"),
 883                         2, 2);
 884     addUnclumpButton(INKSCAPE_ICON_DISTRIBUTE_UNCLUMP,
 885                         _("Unclump objects: try to equalize edge-to-edge distances"),
 886                         2, 4);
 887
 888     //Remove overlaps
 889     addRemoveOverlapsButton(INKSCAPE_ICON_DISTRIBUTE_REMOVE_OVERLAPS,
 890                             _("Move objects as little as possible so that their bounding boxes do not overlap"),
 891                             0, 0);
 892     //Graph Layout
 893     addGraphLayoutButton(INKSCAPE_ICON_DISTRIBUTE_GRAPH,
 894                             _("Nicely arrange selected connector network"),
 895                             0, 0);
 896
 897     //Node Mode buttons
 898     // NOTE: "align nodes vertically" means "move nodes vertically until they align on a common
 899     // _horizontal_ line". This is analogous to what the "align-vertical-center" icon means.
 900     // There is no doubt some ambiguity. For this reason the descriptions are different.
 901     addNodeButton(INKSCAPE_ICON_ALIGN_VERTICAL_NODES,
 902                   _("Align selected nodes to a common horizontal line"),
 903                   0, Geom::X, false);
 904     addNodeButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_NODES,
 905                   _("Align selected nodes to a common vertical line"),
 906                   1, Geom::Y, false);
 907     addNodeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_NODE,
 908                   _("Distribute selected nodes horizontally"),
 909                   2, Geom::X, true);
 910     addNodeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_NODE,
 911                   _("Distribute selected nodes vertically"),
 912                   3, Geom::Y, true);
 913
 914     //Rest of the widgetry
 915
 916     _combo.append_text(_("Last selected"));
 917     _combo.append_text(_("First selected"));
 918     _combo.append_text(_("Biggest object"));
 919     _combo.append_text(_("Smallest object"));
 920     _combo.append_text(_("Page"));
 921     _combo.append_text(_("Drawing"));
 922     _combo.append_text(_("Selection"));
 923
 924     _combo.set_active(prefs->getInt("/dialogs/align/align-to", 6));
 925     _combo.signal_changed().connect(sigc::mem_fun(*this, &AlignAndDistribute::on_ref_change));
 926
 927     _anchorBox.pack_start(_anchorLabel);
 928     _anchorBox.pack_start(_combo);
 929
 930     _selgrpBox.pack_start(_selgrpLabel);
 931     _selgrpBox.pack_start(_selgrp);
 932     _selgrp.set_active(prefs->getBool("/dialogs/align/sel-as-groups"));
 933     _selgrp.signal_toggled().connect(sigc::mem_fun(*this, &AlignAndDistribute::on_selgrp_toggled));
 934
 935     _alignBox.pack_start(_anchorBox);
 936     _alignBox.pack_start(_selgrpBox);
 937     _alignBox.pack_start(_alignTable);
 938
 939     _alignFrame.add(_alignBox);
 940     _distributeFrame.add(_distributeTable);
 941     _removeOverlapFrame.add(_removeOverlapTable);
 942     _graphLayoutFrame.add(_graphLayoutTable);
 943     _nodesFrame.add(_nodesTable);
 944
 945     Gtk::Box *contents = _getContents();
 946     contents->set_spacing(4);
 947
 948     // Notebook for individual transformations
 949
 950     contents->pack_start(_alignFrame, true, true);
 951     contents->pack_start(_distributeFrame, true, true);
 952     contents->pack_start(_removeOverlapFrame, true, true);
 953     contents->pack_start(_graphLayoutFrame, true, true);
 954     contents->pack_start(_nodesFrame, true, true);
 955
 956     //Connect to the global tool change signal
 957     g_signal_connect (G_OBJECT (INKSCAPE), "set_eventcontext", G_CALLBACK (on_tool_changed), this);
 958
 959     // Connect to the global selection change, to invalidate cached randomize_bbox
 960     g_signal_connect (G_OBJECT (INKSCAPE), "change_selection", G_CALLBACK (on_selection_changed), this);
 961     randomize_bbox = Geom::OptRect();
 962
 963     show_all_children();
 964
 965     on_tool_changed (NULL, NULL, this); // set current mode
 966 }
 967
 968 AlignAndDistribute::~AlignAndDistribute()
 969 {
 970     sp_signal_disconnect_by_data (G_OBJECT (INKSCAPE), this);
 971
 972     for (std::list<Action *>::iterator it = _actionList.begin();
 973          it != _actionList.end();
 974          it ++)
 975         delete *it;
 976 }
 977
 978 void AlignAndDistribute::on_ref_change(){
 979     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 980     prefs->setInt("/dialogs/align/align-to", _combo.get_active_row_number());
 981
 982     //Make blink the master
 983 }
 984
 985 void AlignAndDistribute::on_selgrp_toggled(){
 986     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 987     prefs->setInt("/dialogs/align/sel-as-groups", _selgrp.get_active());
 988
 989     //Make blink the master
 990 }
 991
 992
 993
 994
 995 void AlignAndDistribute::setMode(bool nodeEdit)
 996 {
 997     //Act on widgets used in node mode
 998     void ( Gtk::Widget::*mNode) ()  = nodeEdit ?
 999         &Gtk::Widget::show_all : &Gtk::Widget::hide_all;
1000
1001     //Act on widgets used in selection mode
1002   void ( Gtk::Widget::*mSel) ()  = nodeEdit ?
1003       &Gtk::Widget::hide_all : &Gtk::Widget::show_all;
1004
1005
1006     ((_alignFrame).*(mSel))();
1007     ((_distributeFrame).*(mSel))();
1008     ((_removeOverlapFrame).*(mSel))();
1009     ((_graphLayoutFrame).*(mSel))();
1010     ((_nodesFrame).*(mNode))();
1011
1012 }
1013 void AlignAndDistribute::addAlignButton(const Glib::ustring &id, const Glib::ustring tiptext,
1014                                  guint row, guint col)
1015 {
1016     _actionList.push_back(
1017         new ActionAlign(
1018             id, tiptext, row, col,
1019             *this , col + row * 5));
1020 }
1021 void AlignAndDistribute::addDistributeButton(const Glib::ustring &id, const Glib::ustring tiptext,
1022                                       guint row, guint col, bool onInterSpace,
1023                                       Geom::Dim2 orientation, float kBegin, float kEnd)
1024 {
1025     _actionList.push_back(
1026         new ActionDistribute(
1027             id, tiptext, row, col, *this ,
1028             onInterSpace, orientation,
1029             kBegin, kEnd
1030             )
1031         );
1032 }
1033
1034 void AlignAndDistribute::addNodeButton(const Glib::ustring &id, const Glib::ustring tiptext,
1035                    guint col, Geom::Dim2 orientation, bool distribute)
1036 {
1037     _actionList.push_back(
1038         new ActionNode(
1039             id, tiptext, col,
1040             *this, orientation, distribute));
1041 }
1042
1043 void AlignAndDistribute::addRemoveOverlapsButton(const Glib::ustring &id, const Glib::ustring tiptext,
1044                                       guint row, guint col)
1045 {
1046     _actionList.push_back(
1047         new ActionRemoveOverlaps(
1048             id, tiptext, row, col, *this)
1049         );
1050 }
1051
1052 void AlignAndDistribute::addGraphLayoutButton(const Glib::ustring &id, const Glib::ustring tiptext,
1053                                       guint row, guint col)
1054 {
1055     _actionList.push_back(
1056         new ActionGraphLayout(
1057             id, tiptext, row, col, *this)
1058         );
1059 }
1060
1061 void AlignAndDistribute::addUnclumpButton(const Glib::ustring &id, const Glib::ustring tiptext,
1062                                       guint row, guint col)
1063 {
1064     _actionList.push_back(
1065         new ActionUnclump(
1066             id, tiptext, row, col, *this)
1067         );
1068 }
1069
1070 void AlignAndDistribute::addRandomizeButton(const Glib::ustring &id, const Glib::ustring tiptext,
1071                                       guint row, guint col)
1072 {
1073     _actionList.push_back(
1074         new ActionRandomize(
1075             id, tiptext, row, col, *this)
1076         );
1077 }
1078
1079 void AlignAndDistribute::addBaselineButton(const Glib::ustring &id, const Glib::ustring tiptext,
1080                                     guint row, guint col, Gtk::Table &table, Geom::Dim2 orientation, bool distribute)
1081 {
1082     _actionList.push_back(
1083         new ActionBaseline(
1084             id, tiptext, row, col,
1085             *this, table, orientation, distribute));
1086 }
1087
1088
1089
1090
1091 std::list<SPItem *>::iterator AlignAndDistribute::find_master( std::list<SPItem *> &list, bool horizontal){
1092     std::list<SPItem *>::iterator master = list.end();
1093     switch (getAlignTarget()) {
1094     case LAST:
1095         return list.begin();
1096         break;
1097
1098     case FIRST:
1099         return --(list.end());
1100         break;
1101
1102     case BIGGEST:
1103     {
1104         gdouble max = -1e18;
1105         for (std::list<SPItem *>::iterator it = list.begin(); it != list.end(); it++) {
1106             Geom::OptRect b = sp_item_bbox_desktop (*it);
1107             if (b) {
1108                 gdouble dim = (*b)[horizontal ? Geom::X : Geom::Y].extent();
1109                 if (dim > max) {
1110                     max = dim;
1111                     master = it;
1112                 }
1113             }
1114         }
1115         return master;
1116         break;
1117     }
1118
1119     case SMALLEST:
1120     {
1121         gdouble max = 1e18;
1122         for (std::list<SPItem *>::iterator it = list.begin(); it != list.end(); it++) {
1123             Geom::OptRect b = sp_item_bbox_desktop (*it);
1124             if (b) {
1125                 gdouble dim = (*b)[horizontal ? Geom::X : Geom::Y].extent();
1126                 if (dim < max) {
1127                     max = dim;
1128                     master = it;
1129                 }
1130             }
1131         }
1132         return master;
1133         break;
1134     }
1135
1136     default:
1137         g_assert_not_reached ();
1138         break;
1139
1140     } // end of switch statement
1141     return master;
1142 }
1143
1144 AlignAndDistribute::AlignTarget AlignAndDistribute::getAlignTarget()const {
1145     return AlignTarget(_combo.get_active_row_number());
1146 }
1147
1148
1149
1150 } // namespace Dialog
1151 } // namespace UI
1152 } // namespace Inkscape
1153
1154 /*
1155   Local Variables:
1156   mode:c++
1157   c-file-style:"stroustrup"
1158   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1159   indent-tabs-mode:nil
1160   fill-column:99
1161   End:
1162 */
1163 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :