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 "node-context.h"  //For access to ShapeEditor
  31 #include "preferences.h"
  32 #include "removeoverlap/removeoverlap.h"
  33 #include "selection.h"
  34 #include "shape-editor.h" //For node align/distribute methods
  35 #include "sp-flowtext.h"
  36 #include "sp-item-transform.h"
  37 #include "sp-text.h"
  38 #include "text-editing.h"
  39 #include "tools-switch.h"
  40 #include "ui/icon-names.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 (!SP_IS_NODE_CONTEXT (event_context)) return ;
 433
 434         if (_distribute)
 435             event_context->shape_editor->distribute((Geom::Dim2)_orientation);
 436         else
 437             event_context->shape_editor->align((Geom::Dim2)_orientation);
 438
 439     }
 440 };
 441
 442 class ActionRemoveOverlaps : public Action {
 443 private:
 444     Gtk::Label removeOverlapXGapLabel;
 445     Gtk::Label removeOverlapYGapLabel;
 446     Gtk::SpinButton removeOverlapXGap;
 447     Gtk::SpinButton removeOverlapYGap;
 448
 449 public:
 450     ActionRemoveOverlaps(Glib::ustring const &id,
 451                          Glib::ustring const &tiptext,
 452                          guint row,
 453                          guint column,
 454                          AlignAndDistribute &dialog) :
 455         Action(id, tiptext, row, column + 4,
 456                dialog.removeOverlap_table(), dialog.tooltips(), dialog)
 457     {
 458         dialog.removeOverlap_table().set_col_spacings(3);
 459
 460         removeOverlapXGap.set_digits(1);
 461         removeOverlapXGap.set_size_request(60, -1);
 462         removeOverlapXGap.set_increments(1.0, 0);
 463         removeOverlapXGap.set_range(-1000.0, 1000.0);
 464         removeOverlapXGap.set_value(0);
 465         dialog.tooltips().set_tip(removeOverlapXGap,
 466                                   _("Minimum horizontal gap (in px units) between bounding boxes"));
 467         //TRANSLATORS: only translate "string" in "context|string".
 468         // For more details, see http://developer.gnome.org/doc/API/2.0/glib/glib-I18N.html#Q-:CAPS
 469         // "H:" stands for horizontal gap
 470         removeOverlapXGapLabel.set_label(Q_("gap|H:"));
 471
 472         removeOverlapYGap.set_digits(1);
 473         removeOverlapYGap.set_size_request(60, -1);
 474         removeOverlapYGap.set_increments(1.0, 0);
 475         removeOverlapYGap.set_range(-1000.0, 1000.0);
 476         removeOverlapYGap.set_value(0);
 477         dialog.tooltips().set_tip(removeOverlapYGap,
 478                                   _("Minimum vertical gap (in px units) between bounding boxes"));
 479         /* TRANSLATORS: Vertical gap */
 480         removeOverlapYGapLabel.set_label(_("V:"));
 481
 482         dialog.removeOverlap_table().attach(removeOverlapXGapLabel, column, column+1, row, row+1, Gtk::FILL, Gtk::FILL);
 483         dialog.removeOverlap_table().attach(removeOverlapXGap, column+1, column+2, row, row+1, Gtk::FILL, Gtk::FILL);
 484         dialog.removeOverlap_table().attach(removeOverlapYGapLabel, column+2, column+3, row, row+1, Gtk::FILL, Gtk::FILL);
 485         dialog.removeOverlap_table().attach(removeOverlapYGap, column+3, column+4, row, row+1, Gtk::FILL, Gtk::FILL);
 486
 487     }
 488
 489 private :
 490     virtual void on_button_click()
 491     {
 492         if (!_dialog.getDesktop()) return;
 493
 494         // see comment in ActionAlign above
 495         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 496         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 497         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 498
 499         // xGap and yGap are the minimum space required between bounding rectangles.
 500         double const xGap = removeOverlapXGap.get_value();
 501         double const yGap = removeOverlapYGap.get_value();
 502         removeoverlap(sp_desktop_selection(_dialog.getDesktop())->itemList(),
 503                       xGap, yGap);
 504
 505         // restore compensation setting
 506         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 507
 508         sp_document_done(sp_desktop_document(_dialog.getDesktop()), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 509                          _("Remove overlaps"));
 510     }
 511 };
 512
 513 class ActionGraphLayout : public Action {
 514 public:
 515     ActionGraphLayout(Glib::ustring const &id,
 516                          Glib::ustring const &tiptext,
 517                          guint row,
 518                          guint column,
 519                          AlignAndDistribute &dialog) :
 520         Action(id, tiptext, row, column + 4,
 521                dialog.graphLayout_table(), dialog.tooltips(), dialog)
 522     {}
 523
 524 private :
 525     virtual void on_button_click()
 526     {
 527         if (!_dialog.getDesktop()) return;
 528
 529         // see comment in ActionAlign above
 530         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 531         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 532         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 533
 534         graphlayout(sp_desktop_selection(_dialog.getDesktop())->itemList());
 535
 536         // restore compensation setting
 537         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 538
 539         sp_document_done(sp_desktop_document(_dialog.getDesktop()), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 540                          _("Arrange connector network"));
 541     }
 542 };
 543
 544 class ActionUnclump : public Action {
 545 public :
 546     ActionUnclump(const Glib::ustring &id,
 547                const Glib::ustring &tiptext,
 548                guint row,
 549                guint column,
 550                AlignAndDistribute &dialog):
 551         Action(id, tiptext, row, column,
 552                dialog.distribute_table(), dialog.tooltips(), dialog)
 553     {}
 554
 555 private :
 556     virtual void on_button_click()
 557     {
 558         if (!_dialog.getDesktop()) return;
 559
 560         // see comment in ActionAlign above
 561         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 562         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 563         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 564
 565         unclump ((GSList *) sp_desktop_selection(_dialog.getDesktop())->itemList());
 566
 567         // restore compensation setting
 568         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 569
 570         sp_document_done (sp_desktop_document (_dialog.getDesktop()), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 571                           _("Unclump"));
 572     }
 573 };
 574
 575 class ActionRandomize : public Action {
 576 public :
 577     ActionRandomize(const Glib::ustring &id,
 578                const Glib::ustring &tiptext,
 579                guint row,
 580                guint column,
 581                AlignAndDistribute &dialog):
 582         Action(id, tiptext, row, column,
 583                dialog.distribute_table(), dialog.tooltips(), dialog)
 584     {}
 585
 586 private :
 587     virtual void on_button_click()
 588     {
 589         SPDesktop *desktop = _dialog.getDesktop();
 590         if (!desktop) return;
 591
 592         Inkscape::Selection *selection = sp_desktop_selection(desktop);
 593         if (!selection) return;
 594
 595         using Inkscape::Util::GSListConstIterator;
 596         std::list<SPItem *> selected;
 597         selected.insert<GSListConstIterator<SPItem *> >(selected.end(), selection->itemList(), NULL);
 598         if (selected.empty()) return;
 599
 600         //Check 2 or more selected objects
 601         if (selected.size() < 2) return;
 602
 603         Geom::OptRect sel_bbox = selection->bounds();
 604         if (!sel_bbox) {
 605             return;
 606         }
 607
 608         // This bbox is cached between calls to randomize, so that there's no growth nor shrink
 609         // nor drift on sequential randomizations. Discard cache on global (or better active
 610         // desktop's) selection_change signal.
 611         if (!_dialog.randomize_bbox) {
 612             _dialog.randomize_bbox = *sel_bbox;
 613         }
 614
 615         // see comment in ActionAlign above
 616         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 617         int saved_compensation = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 618         prefs->setInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_UNMOVED);
 619
 620         for (std::list<SPItem *>::iterator it(selected.begin());
 621             it != selected.end();
 622             ++it)
 623         {
 624             sp_document_ensure_up_to_date(sp_desktop_document (desktop));
 625             Geom::OptRect item_box = sp_item_bbox_desktop (*it);
 626             if (item_box) {
 627                 // find new center, staying within bbox
 628                 double x = _dialog.randomize_bbox->min()[Geom::X] + (*item_box)[Geom::X].extent() /2 +
 629                     g_random_double_range (0, (*_dialog.randomize_bbox)[Geom::X].extent() - (*item_box)[Geom::X].extent());
 630                 double y = _dialog.randomize_bbox->min()[Geom::Y] + (*item_box)[Geom::Y].extent()/2 +
 631                     g_random_double_range (0, (*_dialog.randomize_bbox)[Geom::Y].extent() - (*item_box)[Geom::Y].extent());
 632                 // displacement is the new center minus old:
 633                 Geom::Point t = Geom::Point (x, y) - 0.5*(item_box->max() + item_box->min());
 634                 sp_item_move_rel(*it, Geom::Translate(t));
 635             }
 636         }
 637
 638         // restore compensation setting
 639         prefs->setInt("/options/clonecompensation/value", saved_compensation);
 640
 641         sp_document_done (sp_desktop_document (desktop), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 642                           _("Randomize positions"));
 643     }
 644 };
 645
 646 struct Baselines
 647 {
 648     SPItem *_item;
 649     Geom::Point _base;
 650     Geom::Dim2 _orientation;
 651     Baselines(SPItem *item, Geom::Point base, Geom::Dim2 orientation) :
 652         _item (item),
 653         _base (base),
 654         _orientation (orientation)
 655     {}
 656 };
 657
 658 bool operator< (const Baselines &a, const Baselines &b)
 659 {
 660     return (a._base[a._orientation] < b._base[b._orientation]);
 661 }
 662
 663 class ActionBaseline : public Action {
 664 public :
 665     ActionBaseline(const Glib::ustring &id,
 666                const Glib::ustring &tiptext,
 667                guint row,
 668                guint column,
 669                AlignAndDistribute &dialog,
 670                Gtk::Table &table,
 671                Geom::Dim2 orientation, bool distribute):
 672         Action(id, tiptext, row, column,
 673                table, dialog.tooltips(), dialog),
 674         _orientation(orientation),
 675         _distribute(distribute)
 676     {}
 677
 678 private :
 679     Geom::Dim2 _orientation;
 680     bool _distribute;
 681     virtual void on_button_click()
 682     {
 683         SPDesktop *desktop = _dialog.getDesktop();
 684         if (!desktop) return;
 685
 686         Inkscape::Selection *selection = sp_desktop_selection(desktop);
 687         if (!selection) return;
 688
 689         using Inkscape::Util::GSListConstIterator;
 690         std::list<SPItem *> selected;
 691         selected.insert<GSListConstIterator<SPItem *> >(selected.end(), selection->itemList(), NULL);
 692         if (selected.empty()) return;
 693
 694         //Check 2 or more selected objects
 695         if (selected.size() < 2) return;
 696
 697         Geom::Point b_min = Geom::Point (HUGE_VAL, HUGE_VAL);
 698         Geom::Point b_max = Geom::Point (-HUGE_VAL, -HUGE_VAL);
 699
 700         std::vector<Baselines> sorted;
 701
 702         for (std::list<SPItem *>::iterator it(selected.begin());
 703             it != selected.end();
 704             ++it)
 705         {
 706             if (SP_IS_TEXT (*it) || SP_IS_FLOWTEXT (*it)) {
 707                 Inkscape::Text::Layout const *layout = te_get_layout(*it);
 708                 Geom::Point base = layout->characterAnchorPoint(layout->begin()) * sp_item_i2d_affine(*it);
 709                 if (base[Geom::X] < b_min[Geom::X]) b_min[Geom::X] = base[Geom::X];
 710                 if (base[Geom::Y] < b_min[Geom::Y]) b_min[Geom::Y] = base[Geom::Y];
 711                 if (base[Geom::X] > b_max[Geom::X]) b_max[Geom::X] = base[Geom::X];
 712                 if (base[Geom::Y] > b_max[Geom::Y]) b_max[Geom::Y] = base[Geom::Y];
 713
 714                 Baselines b (*it, base, _orientation);
 715                 sorted.push_back(b);
 716             }
 717         }
 718
 719         if (sorted.size() <= 1) return;
 720
 721         //sort baselines
 722         std::sort(sorted.begin(), sorted.end());
 723
 724         bool changed = false;
 725
 726         if (_distribute) {
 727             double step = (b_max[_orientation] - b_min[_orientation])/(sorted.size() - 1);
 728             for (unsigned int i = 0; i < sorted.size(); i++) {
 729                 SPItem *item = sorted[i]._item;
 730                 Geom::Point base = sorted[i]._base;
 731                 Geom::Point t(0.0, 0.0);
 732                 t[_orientation] = b_min[_orientation] + step * i - base[_orientation];
 733                 sp_item_move_rel(item, Geom::Translate(t));
 734                 changed = true;
 735             }
 736
 737             if (changed) {
 738                 sp_document_done (sp_desktop_document (desktop), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 739                                   _("Distribute text baselines"));
 740             }
 741
 742         } else {
 743             for (std::list<SPItem *>::iterator it(selected.begin());
 744                  it != selected.end();
 745                  ++it)
 746             {
 747                 if (SP_IS_TEXT (*it) || SP_IS_FLOWTEXT (*it)) {
 748                     Inkscape::Text::Layout const *layout = te_get_layout(*it);
 749                     Geom::Point base = layout->characterAnchorPoint(layout->begin()) * sp_item_i2d_affine(*it);
 750                     Geom::Point t(0.0, 0.0);
 751                     t[_orientation] = b_min[_orientation] - base[_orientation];
 752                     sp_item_move_rel(*it, Geom::Translate(t));
 753                     changed = true;
 754                 }
 755             }
 756
 757             if (changed) {
 758                 sp_document_done (sp_desktop_document (desktop), SP_VERB_DIALOG_ALIGN_DISTRIBUTE,
 759                                   _("Align text baselines"));
 760             }
 761         }
 762     }
 763 };
 764
 765
 766
 767 void on_tool_changed(Inkscape::Application */*inkscape*/, SPEventContext */*context*/, AlignAndDistribute *daad)
 768 {
 769     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 770     if (desktop && sp_desktop_event_context(desktop))
 771         daad->setMode(tools_active(desktop) == TOOLS_NODES);
 772 }
 773
 774 void on_selection_changed(Inkscape::Application */*inkscape*/, Inkscape::Selection */*selection*/, AlignAndDistribute *daad)
 775 {
 776     daad->randomize_bbox = Geom::OptRect();
 777 }
 778
 779 /////////////////////////////////////////////////////////
 780
 781
 782
 783
 784 AlignAndDistribute::AlignAndDistribute()
 785     : UI::Widget::Panel ("", "/dialogs/align", SP_VERB_DIALOG_ALIGN_DISTRIBUTE),
 786       randomize_bbox(),
 787       _alignFrame(_("Align")),
 788       _distributeFrame(_("Distribute")),
 789       _removeOverlapFrame(_("Remove overlaps")),
 790       _graphLayoutFrame(_("Connector network layout")),
 791       _nodesFrame(_("Nodes")),
 792       _alignTable(2, 6, true),
 793       _distributeTable(3, 6, true),
 794       _removeOverlapTable(1, 5, false),
 795       _graphLayoutTable(1, 5, false),
 796       _nodesTable(1, 4, true),
 797       _anchorLabel(_("Relative to: ")),
 798       _selgrpLabel(_("Treat selection as group: "))
 799 {
 800     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 801
 802     //Instanciate the align buttons
 803     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_RIGHT_TO_ANCHOR,
 804                    _("Align right edges of objects to the left edge of the anchor"),
 805                    0, 0);
 806     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_LEFT,
 807                    _("Align left edges"),
 808                    0, 1);
 809     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_CENTER,
 810                    _("Center objects horizontally"),
 811                    0, 2);
 812     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_RIGHT,
 813                    _("Align right sides"),
 814                    0, 3);
 815     addAlignButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_LEFT_TO_ANCHOR,
 816                    _("Align left edges of objects to the right edge of the anchor"),
 817                    0, 4);
 818     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_BOTTOM_TO_ANCHOR,
 819                    _("Align bottom edges of objects to the top edge of the anchor"),
 820                    1, 0);
 821     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_TOP,
 822                    _("Align top edges"),
 823                    1, 1);
 824     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_CENTER,
 825                    _("Center on horizontal axis"),
 826                    1, 2);
 827     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_BOTTOM,
 828                    _("Align bottom edges"),
 829                    1, 3);
 830     addAlignButton(INKSCAPE_ICON_ALIGN_VERTICAL_TOP_TO_ANCHOR,
 831                    _("Align top edges of objects to the bottom edge of the anchor"),
 832                    1, 4);
 833
 834     //Baseline aligns
 835     addBaselineButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_BASELINE,
 836                    _("Align baseline anchors of texts horizontally"),
 837                       0, 5, this->align_table(), Geom::X, false);
 838     addBaselineButton(INKSCAPE_ICON_ALIGN_VERTICAL_BASELINE,
 839                    _("Align baselines of texts"),
 840                      1, 5, this->align_table(), Geom::Y, false);
 841
 842     //The distribute buttons
 843     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_GAPS,
 844                         _("Make horizontal gaps between objects equal"),
 845                         0, 4, true, Geom::X, .5, .5);
 846
 847     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_LEFT,
 848                         _("Distribute left edges equidistantly"),
 849                         0, 1, false, Geom::X, 1., 0.);
 850     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_CENTER,
 851                         _("Distribute centers equidistantly horizontally"),
 852                         0, 2, false, Geom::X, .5, .5);
 853     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_RIGHT,
 854                         _("Distribute right edges equidistantly"),
 855                         0, 3, false, Geom::X, 0., 1.);
 856
 857     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_GAPS,
 858                         _("Make vertical gaps between objects equal"),
 859                         1, 4, true, Geom::Y, .5, .5);
 860
 861     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_TOP,
 862                         _("Distribute top edges equidistantly"),
 863                         1, 1, false, Geom::Y, 0, 1);
 864     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_CENTER,
 865                         _("Distribute centers equidistantly vertically"),
 866                         1, 2, false, Geom::Y, .5, .5);
 867     addDistributeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_BOTTOM,
 868                         _("Distribute bottom edges equidistantly"),
 869                         1, 3, false, Geom::Y, 1., 0.);
 870
 871     //Baseline distribs
 872     addBaselineButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_BASELINE,
 873                    _("Distribute baseline anchors of texts horizontally"),
 874                       0, 5, this->distribute_table(), Geom::X, true);
 875     addBaselineButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_BASELINE,
 876                    _("Distribute baselines of texts vertically"),
 877                      1, 5, this->distribute_table(), Geom::Y, true);
 878
 879     //Randomize & Unclump
 880     addRandomizeButton(INKSCAPE_ICON_DISTRIBUTE_RANDOMIZE,
 881                         _("Randomize centers in both dimensions"),
 882                         2, 2);
 883     addUnclumpButton(INKSCAPE_ICON_DISTRIBUTE_UNCLUMP,
 884                         _("Unclump objects: try to equalize edge-to-edge distances"),
 885                         2, 4);
 886
 887     //Remove overlaps
 888     addRemoveOverlapsButton(INKSCAPE_ICON_DISTRIBUTE_REMOVE_OVERLAPS,
 889                             _("Move objects as little as possible so that their bounding boxes do not overlap"),
 890                             0, 0);
 891     //Graph Layout
 892     addGraphLayoutButton(INKSCAPE_ICON_DISTRIBUTE_GRAPH,
 893                             _("Nicely arrange selected connector network"),
 894                             0, 0);
 895
 896     //Node Mode buttons
 897     // NOTE: "align nodes vertically" means "move nodes vertically until they align on a common
 898     // _horizontal_ line". This is analogous to what the "align-vertical-center" icon means.
 899     // There is no doubt some ambiguity. For this reason the descriptions are different.
 900     addNodeButton(INKSCAPE_ICON_ALIGN_VERTICAL_NODES,
 901                   _("Align selected nodes to a common horizontal line"),
 902                   0, Geom::X, false);
 903     addNodeButton(INKSCAPE_ICON_ALIGN_HORIZONTAL_NODES,
 904                   _("Align selected nodes to a common vertical line"),
 905                   1, Geom::Y, false);
 906     addNodeButton(INKSCAPE_ICON_DISTRIBUTE_HORIZONTAL_NODE,
 907                   _("Distribute selected nodes horizontally"),
 908                   2, Geom::X, true);
 909     addNodeButton(INKSCAPE_ICON_DISTRIBUTE_VERTICAL_NODE,
 910                   _("Distribute selected nodes vertically"),
 911                   3, Geom::Y, true);
 912
 913     //Rest of the widgetry
 914
 915     _combo.append_text(_("Last selected"));
 916     _combo.append_text(_("First selected"));
 917     _combo.append_text(_("Biggest object"));
 918     _combo.append_text(_("Smallest object"));
 919     _combo.append_text(_("Page"));
 920     _combo.append_text(_("Drawing"));
 921     _combo.append_text(_("Selection"));
 922
 923     _combo.set_active(prefs->getInt("/dialogs/align/align-to", 6));
 924     _combo.signal_changed().connect(sigc::mem_fun(*this, &AlignAndDistribute::on_ref_change));
 925
 926     _anchorBox.pack_start(_anchorLabel);
 927     _anchorBox.pack_start(_combo);
 928
 929     _selgrpBox.pack_start(_selgrpLabel);
 930     _selgrpBox.pack_start(_selgrp);
 931     _selgrp.set_active(prefs->getBool("/dialogs/align/sel-as-groups"));
 932     _selgrp.signal_toggled().connect(sigc::mem_fun(*this, &AlignAndDistribute::on_selgrp_toggled));
 933
 934     _alignBox.pack_start(_anchorBox);
 935     _alignBox.pack_start(_selgrpBox);
 936     _alignBox.pack_start(_alignTable);
 937
 938     _alignFrame.add(_alignBox);
 939     _distributeFrame.add(_distributeTable);
 940     _removeOverlapFrame.add(_removeOverlapTable);
 941     _graphLayoutFrame.add(_graphLayoutTable);
 942     _nodesFrame.add(_nodesTable);
 943
 944     Gtk::Box *contents = _getContents();
 945     contents->set_spacing(4);
 946
 947     // Notebook for individual transformations
 948
 949     contents->pack_start(_alignFrame, true, true);
 950     contents->pack_start(_distributeFrame, true, true);
 951     contents->pack_start(_removeOverlapFrame, true, true);
 952     contents->pack_start(_graphLayoutFrame, true, true);
 953     contents->pack_start(_nodesFrame, true, true);
 954
 955     //Connect to the global tool change signal
 956     g_signal_connect (G_OBJECT (INKSCAPE), "set_eventcontext", G_CALLBACK (on_tool_changed), this);
 957
 958     // Connect to the global selection change, to invalidate cached randomize_bbox
 959     g_signal_connect (G_OBJECT (INKSCAPE), "change_selection", G_CALLBACK (on_selection_changed), this);
 960     randomize_bbox = Geom::OptRect();
 961
 962     show_all_children();
 963
 964     on_tool_changed (NULL, NULL, this); // set current mode
 965 }
 966
 967 AlignAndDistribute::~AlignAndDistribute()
 968 {
 969     sp_signal_disconnect_by_data (G_OBJECT (INKSCAPE), this);
 970
 971     for (std::list<Action *>::iterator it = _actionList.begin();
 972          it != _actionList.end();
 973          it ++)
 974         delete *it;
 975 }
 976
 977 void AlignAndDistribute::on_ref_change(){
 978     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 979     prefs->setInt("/dialogs/align/align-to", _combo.get_active_row_number());
 980
 981     //Make blink the master
 982 }
 983
 984 void AlignAndDistribute::on_selgrp_toggled(){
 985     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 986     prefs->setInt("/dialogs/align/sel-as-groups", _selgrp.get_active());
 987
 988     //Make blink the master
 989 }
 990
 991
 992
 993
 994 void AlignAndDistribute::setMode(bool nodeEdit)
 995 {
 996     //Act on widgets used in node mode
 997     void ( Gtk::Widget::*mNode) ()  = nodeEdit ?
 998         &Gtk::Widget::show_all : &Gtk::Widget::hide_all;
 999
1000     //Act on widgets used in selection mode
1001   void ( Gtk::Widget::*mSel) ()  = nodeEdit ?
1002       &Gtk::Widget::hide_all : &Gtk::Widget::show_all;
1003
1004
1005     ((_alignFrame).*(mSel))();
1006     ((_distributeFrame).*(mSel))();
1007     ((_removeOverlapFrame).*(mSel))();
1008     ((_graphLayoutFrame).*(mSel))();
1009     ((_nodesFrame).*(mNode))();
1010
1011 }
1012 void AlignAndDistribute::addAlignButton(const Glib::ustring &id, const Glib::ustring tiptext,
1013                                  guint row, guint col)
1014 {
1015     _actionList.push_back(
1016         new ActionAlign(
1017             id, tiptext, row, col,
1018             *this , col + row * 5));
1019 }
1020 void AlignAndDistribute::addDistributeButton(const Glib::ustring &id, const Glib::ustring tiptext,
1021                                       guint row, guint col, bool onInterSpace,
1022                                       Geom::Dim2 orientation, float kBegin, float kEnd)
1023 {
1024     _actionList.push_back(
1025         new ActionDistribute(
1026             id, tiptext, row, col, *this ,
1027             onInterSpace, orientation,
1028             kBegin, kEnd
1029             )
1030         );
1031 }
1032
1033 void AlignAndDistribute::addNodeButton(const Glib::ustring &id, const Glib::ustring tiptext,
1034                    guint col, Geom::Dim2 orientation, bool distribute)
1035 {
1036     _actionList.push_back(
1037         new ActionNode(
1038             id, tiptext, col,
1039             *this, orientation, distribute));
1040 }
1041
1042 void AlignAndDistribute::addRemoveOverlapsButton(const Glib::ustring &id, const Glib::ustring tiptext,
1043                                       guint row, guint col)
1044 {
1045     _actionList.push_back(
1046         new ActionRemoveOverlaps(
1047             id, tiptext, row, col, *this)
1048         );
1049 }
1050
1051 void AlignAndDistribute::addGraphLayoutButton(const Glib::ustring &id, const Glib::ustring tiptext,
1052                                       guint row, guint col)
1053 {
1054     _actionList.push_back(
1055         new ActionGraphLayout(
1056             id, tiptext, row, col, *this)
1057         );
1058 }
1059
1060 void AlignAndDistribute::addUnclumpButton(const Glib::ustring &id, const Glib::ustring tiptext,
1061                                       guint row, guint col)
1062 {
1063     _actionList.push_back(
1064         new ActionUnclump(
1065             id, tiptext, row, col, *this)
1066         );
1067 }
1068
1069 void AlignAndDistribute::addRandomizeButton(const Glib::ustring &id, const Glib::ustring tiptext,
1070                                       guint row, guint col)
1071 {
1072     _actionList.push_back(
1073         new ActionRandomize(
1074             id, tiptext, row, col, *this)
1075         );
1076 }
1077
1078 void AlignAndDistribute::addBaselineButton(const Glib::ustring &id, const Glib::ustring tiptext,
1079                                     guint row, guint col, Gtk::Table &table, Geom::Dim2 orientation, bool distribute)
1080 {
1081     _actionList.push_back(
1082         new ActionBaseline(
1083             id, tiptext, row, col,
1084             *this, table, orientation, distribute));
1085 }
1086
1087
1088
1089
1090 std::list<SPItem *>::iterator AlignAndDistribute::find_master( std::list<SPItem *> &list, bool horizontal){
1091     std::list<SPItem *>::iterator master = list.end();
1092     switch (getAlignTarget()) {
1093     case LAST:
1094         return list.begin();
1095         break;
1096
1097     case FIRST:
1098         return --(list.end());
1099         break;
1100
1101     case BIGGEST:
1102     {
1103         gdouble max = -1e18;
1104         for (std::list<SPItem *>::iterator it = list.begin(); it != list.end(); it++) {
1105             Geom::OptRect b = sp_item_bbox_desktop (*it);
1106             if (b) {
1107                 gdouble dim = (*b)[horizontal ? Geom::X : Geom::Y].extent();
1108                 if (dim > max) {
1109                     max = dim;
1110                     master = it;
1111                 }
1112             }
1113         }
1114         return master;
1115         break;
1116     }
1117
1118     case SMALLEST:
1119     {
1120         gdouble max = 1e18;
1121         for (std::list<SPItem *>::iterator it = list.begin(); it != list.end(); it++) {
1122             Geom::OptRect b = sp_item_bbox_desktop (*it);
1123             if (b) {
1124                 gdouble dim = (*b)[horizontal ? Geom::X : Geom::Y].extent();
1125                 if (dim < max) {
1126                     max = dim;
1127                     master = it;
1128                 }
1129             }
1130         }
1131         return master;
1132         break;
1133     }
1134
1135     default:
1136         g_assert_not_reached ();
1137         break;
1138
1139     } // end of switch statement
1140     return master;
1141 }
1142
1143 AlignAndDistribute::AlignTarget AlignAndDistribute::getAlignTarget()const {
1144     return AlignTarget(_combo.get_active_row_number());
1145 }
1146
1147
1148
1149 } // namespace Dialog
1150 } // namespace UI
1151 } // namespace Inkscape
1152
1153 /*
1154   Local Variables:
1155   mode:c++
1156   c-file-style:"stroustrup"
1157   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1158   indent-tabs-mode:nil
1159   fill-column:99
1160   End:
1161 */
1162 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :