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