src/dialogs/layers-panel.cpp

   1 /*
   2  * A simple panel for layers
   3  *
   4  * Authors:
   5  *   Jon A. Cruz
   6  *
   7  * Copyright (C) 2006 Jon A. Cruz
   8  *
   9  * Released under GNU GPL, read the file 'COPYING' for more information
  10  */
  11 #ifdef HAVE_CONFIG_H
  12 # include <config.h>
  13 #endif
  14
  15 #include <glibmm/i18n.h>
  16
  17 #include <gtk/gtkstock.h>
  18 #include <gtk/gtkmain.h>
  19
  20 #include "inkscape.h"
  21
  22 #include "layers-panel.h"
  23
  24 #include "layer-manager.h"
  25 #include "layer-fns.h"
  26
  27 #include "verbs.h"
  28 #include "helper/action.h"
  29
  30 #include "document.h"
  31 #include "desktop.h"
  32 #include "sp-object.h"
  33 #include "sp-item.h"
  34 #include "widgets/icon.h"
  35 #include <gtkmm/widget.h>
  36 #include <gtkmm/spinbutton.h>
  37 #include "prefs-utils.h"
  38 #include "xml/repr.h"
  39 #include "svg/css-ostringstream.h"
  40 #include "desktop-style.h"
  41
  42 //#define DUMP_LAYERS 1
  43
  44 namespace Inkscape {
  45 namespace UI {
  46 namespace Dialogs {
  47
  48 LayersPanel* LayersPanel::instance = 0;
  49
  50 LayersPanel& LayersPanel::getInstance()
  51 {
  52     if ( !instance ) {
  53         instance = new LayersPanel();
  54     }
  55
  56     return *instance;
  57 }
  58
  59 enum {
  60     COL_VISIBLE = 1,
  61     COL_LOCKED
  62 };
  63
  64 enum {
  65     BUTTON_NEW = 0,
  66     BUTTON_RENAME,
  67     BUTTON_TOP,
  68     BUTTON_BOTTOM,
  69     BUTTON_UP,
  70     BUTTON_DOWN,
  71 //    BUTTON_DUPLICATE,
  72     BUTTON_DELETE
  73 };
  74
  75 class ImageToggler : public Gtk::CellRendererPixbuf {
  76 public:
  77     ImageToggler( char const* on, char const* off) :
  78         Glib::ObjectBase(typeid(ImageToggler)),
  79         Gtk::CellRendererPixbuf(),
  80         _pixOnName(on),
  81         _pixOffName(off),
  82         _property_active(*this, "active", false),
  83         _property_activatable(*this, "activatable", true),
  84         _property_pixbuf_on(*this, "pixbuf_on", Glib::RefPtr<Gdk::Pixbuf>(0)),
  85         _property_pixbuf_off(*this, "pixbuf_off", Glib::RefPtr<Gdk::Pixbuf>(0))
  86     {
  87         property_mode() = Gtk::CELL_RENDERER_MODE_ACTIVATABLE;
  88
  89         Gtk::Widget* thingie = sp_icon_get_icon(_pixOnName.c_str(), Inkscape::ICON_SIZE_DECORATION);
  90         if ( thingie ) {
  91             if ( SP_IS_ICON(thingie->gobj()) ) {
  92                 SPIcon* icon = SP_ICON(thingie->gobj());
  93                 sp_icon_fetch_pixbuf( icon );
  94                 _property_pixbuf_on = Glib::wrap( icon->pb, true );
  95             }
  96             delete thingie;
  97         }
  98         thingie = sp_icon_get_icon(_pixOffName.c_str(), Inkscape::ICON_SIZE_DECORATION);
  99         if ( thingie ) {
 100             if ( SP_IS_ICON(thingie->gobj()) ) {
 101                 SPIcon* icon = SP_ICON(thingie->gobj());
 102                 sp_icon_fetch_pixbuf( icon );
 103                 _property_pixbuf_off = Glib::wrap( icon->pb, true );
 104             }
 105             delete thingie;
 106         }
 107         property_pixbuf() = _property_pixbuf_off.get_value();
 108     }
 109
 110     sigc::signal<void, const Glib::ustring&> signal_toggled()
 111     {
 112         return _signal_toggled;
 113     }
 114
 115     sigc::signal<void, GdkEvent const *> signal_pre_toggle()
 116     {
 117         return _signal_pre_toggle;
 118     }
 119
 120     Glib::PropertyProxy<bool> property_active() { return _property_active.get_proxy(); }
 121     Glib::PropertyProxy<bool> property_activatable() { return _property_activatable.get_proxy(); }
 122     Glib::PropertyProxy< Glib::RefPtr<Gdk::Pixbuf> > property_pixbuf_on();
 123     Glib::PropertyProxy< Glib::RefPtr<Gdk::Pixbuf> > property_pixbuf_off();
 124 //  virtual Glib::PropertyProxy_Base _property_renderable(); //override
 125
 126 protected:
 127
 128     virtual void get_size_vfunc( Gtk::Widget& widget,
 129                                  const Gdk::Rectangle* cell_area,
 130                                  int* x_offset,
 131                                  int* y_offset,
 132                                  int* width,
 133                                  int* height ) const
 134     {
 135         Gtk::CellRendererPixbuf::get_size_vfunc( widget, cell_area, x_offset, y_offset, width, height );
 136
 137         if ( width ) {
 138             *width += (*width) >> 1;
 139         }
 140         if ( height ) {
 141             *height += (*height) >> 1;
 142         }
 143     }
 144
 145
 146     virtual void render_vfunc( const Glib::RefPtr<Gdk::Drawable>& window,
 147                                Gtk::Widget& widget,
 148                                const Gdk::Rectangle& background_area,
 149                                const Gdk::Rectangle& cell_area,
 150                                const Gdk::Rectangle& expose_area,
 151                                Gtk::CellRendererState flags )
 152     {
 153         property_pixbuf() = _property_active.get_value() ? _property_pixbuf_on : _property_pixbuf_off;
 154         Gtk::CellRendererPixbuf::render_vfunc( window, widget, background_area, cell_area, expose_area, flags );
 155     }
 156
 157     virtual bool activate_vfunc(GdkEvent* event,
 158                                 Gtk::Widget& widget,
 159                                 const Glib::ustring& path,
 160                                 const Gdk::Rectangle& background_area,
 161                                 const Gdk::Rectangle& cell_area,
 162                                 Gtk::CellRendererState flags)
 163     {
 164         _signal_pre_toggle.emit(event);
 165         _signal_toggled.emit(path);
 166
 167         return false;
 168     }
 169
 170
 171 private:
 172     Glib::ustring _pixOnName;
 173     Glib::ustring _pixOffName;
 174
 175     Glib::Property<bool> _property_active;
 176     Glib::Property<bool> _property_activatable;
 177     Glib::Property< Glib::RefPtr<Gdk::Pixbuf> > _property_pixbuf_on;
 178     Glib::Property< Glib::RefPtr<Gdk::Pixbuf> > _property_pixbuf_off;
 179
 180     sigc::signal<void, const Glib::ustring&> _signal_toggled;
 181     sigc::signal<void, GdkEvent const *> _signal_pre_toggle;
 182 };
 183
 184 class LayersPanel::InternalUIBounce
 185 {
 186 public:
 187     int _actionCode;
 188     SPObject* _target;
 189 };
 190
 191 static gboolean layers_panel_activated( GtkObject *object, GdkEvent * /*event*/, gpointer data )
 192 {
 193     if ( data )
 194     {
 195         LayersPanel* panel = reinterpret_cast<LayersPanel*>(data);
 196         panel->setDesktop( SP_ACTIVE_DESKTOP );
 197     }
 198
 199     return FALSE;
 200 }
 201
 202
 203 void LayersPanel::_styleButton( Gtk::Button& btn, SPDesktop *desktop, unsigned int code, char const* iconName, char const* fallback )
 204 {
 205     bool set = false;
 206
 207     if ( iconName ) {
 208         GtkWidget *child = sp_icon_new( Inkscape::ICON_SIZE_SMALL_TOOLBAR, iconName );
 209         gtk_widget_show( child );
 210         btn.add( *manage(Glib::wrap(child)) );
 211         set = true;
 212     }
 213
 214     if ( desktop ) {
 215         Verb *verb = Verb::get( code );
 216         if ( verb ) {
 217             SPAction *action = verb->get_action(desktop);
 218             if ( !set && action && action->image ) {
 219                 GtkWidget *child = sp_icon_new( Inkscape::ICON_SIZE_SMALL_TOOLBAR, action->image );
 220                 gtk_widget_show( child );
 221                 btn.add( *manage(Glib::wrap(child)) );
 222                 set = true;
 223             }
 224
 225             if ( action && action->tip ) {
 226                 _tips.set_tip( btn, action->tip );
 227             }
 228         }
 229     }
 230
 231     if ( !set && fallback ) {
 232         btn.set_label( fallback );
 233     }
 234 }
 235
 236
 237 Gtk::MenuItem& LayersPanel::_addPopupItem( SPDesktop *desktop, unsigned int code, char const* iconName, char const* fallback, int id )
 238 {
 239     GtkWidget* iconWidget = 0;
 240     const char* label = 0;
 241
 242     if ( iconName ) {
 243         iconWidget = sp_icon_new( Inkscape::ICON_SIZE_MENU, iconName );
 244     }
 245
 246     if ( desktop ) {
 247         Verb *verb = Verb::get( code );
 248         if ( verb ) {
 249             SPAction *action = verb->get_action(desktop);
 250             if ( !iconWidget && action && action->image ) {
 251                 iconWidget = sp_icon_new( Inkscape::ICON_SIZE_MENU, action->image );
 252             }
 253
 254             if ( action ) {
 255                 label = action->name;
 256             }
 257         }
 258     }
 259
 260     if ( !label && fallback ) {
 261         label = fallback;
 262     }
 263
 264     Gtk::Widget* wrapped = 0;
 265     if ( iconWidget ) {
 266         wrapped = manage(Glib::wrap(iconWidget));
 267         wrapped->show();
 268     }
 269
 270
 271
 272     Gtk::Menu::MenuList& menulist = _popupMenu.items();
 273
 274     if ( wrapped ) {
 275         menulist.push_back( Gtk::Menu_Helpers::ImageMenuElem( label, *wrapped, sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), id)) );
 276     } else {
 277         menulist.push_back( Gtk::Menu_Helpers::MenuElem( label, sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), id)) );
 278     }
 279     return menulist.back();
 280 }
 281
 282 void LayersPanel::_fireAction( unsigned int code )
 283 {
 284     if ( _desktop ) {
 285         Verb *verb = Verb::get( code );
 286         if ( verb ) {
 287             SPAction *action = verb->get_action(_desktop);
 288             if ( action ) {
 289                 sp_action_perform( action, NULL );
 290 //             } else {
 291 //                 g_message("no action");
 292             }
 293 //         } else {
 294 //             g_message("no verb for %u", code);
 295         }
 296 //     } else {
 297 //         g_message("no active desktop");
 298     }
 299 }
 300
 301 //     SP_VERB_LAYER_NEXT,
 302 //     SP_VERB_LAYER_PREV,
 303 void LayersPanel::_takeAction( int val )
 304 {
 305     if ( !_pending ) {
 306         _pending = new InternalUIBounce();
 307         _pending->_actionCode = val;
 308         _pending->_target = _selectedLayer();
 309         Glib::signal_timeout().connect( sigc::mem_fun(*this, &LayersPanel::_executeAction), 0 );
 310     }
 311 }
 312
 313 bool LayersPanel::_executeAction()
 314 {
 315     // Make sure selected layer hasn't changed since the action was triggered
 316     if ( _pending
 317          && !( (_desktop && _desktop->currentLayer())
 318                && (_desktop->currentLayer() != _pending->_target)
 319              ) ) {
 320         int val = _pending->_actionCode;
 321 //        SPObject* target = _pending->_target;
 322
 323         switch ( val ) {
 324             case BUTTON_NEW:
 325             {
 326                 _fireAction( SP_VERB_LAYER_NEW );
 327             }
 328             break;
 329             case BUTTON_RENAME:
 330             {
 331                 _fireAction( SP_VERB_LAYER_RENAME );
 332             }
 333             break;
 334             case BUTTON_TOP:
 335             {
 336                 _fireAction( SP_VERB_LAYER_TO_TOP );
 337             }
 338             break;
 339             case BUTTON_BOTTOM:
 340             {
 341                 _fireAction( SP_VERB_LAYER_TO_BOTTOM );
 342             }
 343             break;
 344             case BUTTON_UP:
 345             {
 346                 _fireAction( SP_VERB_LAYER_RAISE );
 347             }
 348             break;
 349             case BUTTON_DOWN:
 350             {
 351                 _fireAction( SP_VERB_LAYER_LOWER );
 352             }
 353             break;
 354             case BUTTON_DELETE:
 355             {
 356                 _fireAction( SP_VERB_LAYER_DELETE );
 357             }
 358             break;
 359         }
 360
 361         delete _pending;
 362         _pending = 0;
 363     }
 364
 365     return false;
 366 }
 367
 368 class LayersPanel::ModelColumns : public Gtk::TreeModel::ColumnRecord
 369 {
 370 public:
 371
 372     ModelColumns()
 373     {
 374         add(_colObject);
 375         add(_colVisible);
 376         add(_colLocked);
 377         add(_colLabel);
 378     }
 379     virtual ~ModelColumns() {}
 380
 381     Gtk::TreeModelColumn<SPObject*> _colObject;
 382     Gtk::TreeModelColumn<Glib::ustring> _colLabel;
 383     Gtk::TreeModelColumn<bool> _colVisible;
 384     Gtk::TreeModelColumn<bool> _colLocked;
 385 };
 386
 387 void LayersPanel::_updateLayer( SPObject *layer ) {
 388     _store->foreach( sigc::bind<SPObject*>(sigc::mem_fun(*this, &LayersPanel::_checkForUpdated), layer) );
 389 }
 390
 391 bool LayersPanel::_checkForUpdated(const Gtk::TreePath &path, const Gtk::TreeIter& iter, SPObject* layer)
 392 {
 393     bool stopGoing = false;
 394     Gtk::TreeModel::Row row = *iter;
 395     Glib::ustring tmp = row[_model->_colLabel];
 396     if ( layer == row[_model->_colObject] )
 397     {
 398         row[_model->_colLabel] = layer->label() ? layer->label() : SP_OBJECT_ID(layer);
 399         row[_model->_colVisible] = SP_IS_ITEM(layer) ? !SP_ITEM(layer)->isHidden() : false;
 400         row[_model->_colLocked] = SP_IS_ITEM(layer) ? SP_ITEM(layer)->isLocked() : false;
 401
 402         stopGoing = true;
 403     }
 404
 405     return stopGoing;
 406 }
 407
 408 void LayersPanel::_selectLayer( SPObject *layer ) {
 409     if ( !layer || (_desktop && _desktop->doc() && (layer == _desktop->doc()->root)) ) {
 410         if ( _tree.get_selection()->count_selected_rows() != 0 ) {
 411             _tree.get_selection()->unselect_all();
 412         }
 413     } else {
 414         _store->foreach( sigc::bind<SPObject*>(sigc::mem_fun(*this, &LayersPanel::_checkForSelected), layer) );
 415     }
 416
 417     _checkTreeSelection();
 418 }
 419
 420 bool LayersPanel::_checkForSelected(const Gtk::TreePath &path, const Gtk::TreeIter& iter, SPObject* layer)
 421 {
 422     bool stopGoing = false;
 423
 424     Gtk::TreeModel::Row row = *iter;
 425     if ( layer == row[_model->_colObject] )
 426     {
 427         _tree.expand_to_path( path );
 428
 429         Glib::RefPtr<Gtk::TreeSelection> select = _tree.get_selection();
 430
 431         select->select(iter);
 432
 433         stopGoing = true;
 434     }
 435
 436     return stopGoing;
 437 }
 438
 439 void LayersPanel::_layersChanged()
 440 {
 441 //    g_message("_layersChanged()");
 442     SPDocument* document = _desktop->doc();
 443     SPObject* root = document->root;
 444     if ( root ) {
 445         if ( _mgr && _mgr->includes( root ) ) {
 446             SPObject* target = _desktop->currentLayer();
 447             _store->clear();
 448
 449 #if DUMP_LAYERS
 450             g_message("root:%p  {%s}   [%s]", root, root->id, root->label() );
 451 #endif // DUMP_LAYERS
 452             _addLayer( document, root, 0, target, 0 );
 453         }
 454     }
 455 }
 456
 457 void LayersPanel::_addLayer( SPDocument* doc, SPObject* layer, Gtk::TreeModel::Row* parentRow, SPObject* target, int level )
 458 {
 459     if ( layer && (level < _maxNestDepth) ) {
 460         unsigned int counter = _mgr->childCount(layer);
 461         for ( unsigned int i = 0; i < counter; i++ ) {
 462             SPObject *child = _mgr->nthChildOf(layer, i);
 463             if ( child ) {
 464 #if DUMP_LAYERS
 465                 g_message(" %3d    layer:%p  {%s}   [%s]", level, child, child->id, child->label() );
 466 #endif // DUMP_LAYERS
 467
 468                 Gtk::TreeModel::iterator iter = parentRow ? _store->prepend(parentRow->children()) : _store->prepend();
 469                 Gtk::TreeModel::Row row = *iter;
 470                 row[_model->_colObject] = child;
 471                 row[_model->_colLabel] = child->label() ? child->label() : SP_OBJECT_ID(child);
 472                 row[_model->_colVisible] = SP_IS_ITEM(child) ? !SP_ITEM(child)->isHidden() : false;
 473                 row[_model->_colLocked] = SP_IS_ITEM(child) ? SP_ITEM(child)->isLocked() : false;
 474
 475                 if ( target && child == target ) {
 476                     _tree.expand_to_path( _store->get_path(iter) );
 477
 478                     Glib::RefPtr<Gtk::TreeSelection> select = _tree.get_selection();
 479                     select->select(iter);
 480
 481                     _checkTreeSelection();
 482                 }
 483
 484                 _addLayer( doc, child, &row, target, level + 1 );
 485             }
 486         }
 487     }
 488 }
 489
 490 SPObject* LayersPanel::_selectedLayer()
 491 {
 492     SPObject* obj = 0;
 493
 494     Gtk::TreeModel::iterator iter = _tree.get_selection()->get_selected();
 495     if ( iter ) {
 496         Gtk::TreeModel::Row row = *iter;
 497         obj = row[_model->_colObject];
 498     }
 499
 500     return obj;
 501 }
 502
 503 void LayersPanel::_pushTreeSelectionToCurrent()
 504 {
 505     SPObject* inTree = _selectedLayer();
 506     // TODO hunt down the possible API abuse in getting NULL
 507     if ( _desktop->currentRoot() ) {
 508         if ( inTree ) {
 509             SPObject* curr = _desktop->currentLayer();
 510             if ( curr != inTree ) {
 511                 _mgr->setCurrentLayer( inTree );
 512             }
 513         } else {
 514             _mgr->setCurrentLayer( _desktop->doc()->root );
 515         }
 516     }
 517 }
 518
 519 void LayersPanel::_checkTreeSelection()
 520 {
 521     bool sensitive = false;
 522     bool sensitiveNonTop = false;
 523     bool sensitiveNonBottom = false;
 524     if ( _tree.get_selection()->count_selected_rows() > 0 ) {
 525         sensitive = true;
 526
 527         SPObject* inTree = _selectedLayer();
 528         if ( inTree ) {
 529
 530             sensitiveNonTop = (Inkscape::next_layer(inTree->parent, inTree) != 0);
 531             sensitiveNonBottom = (Inkscape::previous_layer(inTree->parent, inTree) != 0);
 532
 533             if ( inTree->repr ) {
 534                 SPCSSAttr *css = sp_repr_css_attr(inTree->repr, "style");
 535                 if ( css ) {
 536                     _opacity.set_value( sp_repr_css_double_property( css, "opacity", 1.0 ) );
 537                 }
 538             }
 539         }
 540     }
 541
 542
 543     for ( std::vector<Gtk::Widget*>::iterator it = _watching.begin(); it != _watching.end(); ++it ) {
 544         (*it)->set_sensitive( sensitive );
 545     }
 546     for ( std::vector<Gtk::Widget*>::iterator it = _watchingNonTop.begin(); it != _watchingNonTop.end(); ++it ) {
 547         (*it)->set_sensitive( sensitiveNonTop );
 548     }
 549     for ( std::vector<Gtk::Widget*>::iterator it = _watchingNonBottom.begin(); it != _watchingNonBottom.end(); ++it ) {
 550         (*it)->set_sensitive( sensitiveNonBottom );
 551     }
 552 }
 553
 554 void LayersPanel::_preToggle( GdkEvent const *event )
 555 {
 556     if ( _toggleEvent ) {
 557         gdk_event_free(_toggleEvent);
 558         _toggleEvent = 0;
 559     }
 560
 561     if ( event && (event->type == GDK_BUTTON_PRESS) ) {
 562         // Make a copy so we can keep it around.
 563         _toggleEvent = gdk_event_copy(const_cast<GdkEvent*>(event));
 564     }
 565 }
 566
 567 void LayersPanel::_toggled( Glib::ustring const& str, int targetCol )
 568 {
 569     Gtk::TreeModel::Children::iterator iter = _tree.get_model()->get_iter(str);
 570     Gtk::TreeModel::Row row = *iter;
 571
 572     Glib::ustring tmp = row[_model->_colLabel];
 573
 574     SPObject* obj = row[_model->_colObject];
 575     SPItem* item = ( obj && SP_IS_ITEM(obj) ) ? SP_ITEM(obj) : 0;
 576     if ( item ) {
 577         switch ( targetCol ) {
 578             case COL_VISIBLE:
 579             {
 580                 bool newValue = !row[_model->_colVisible];
 581                 row[_model->_colVisible] = newValue;
 582                 item->setHidden( !newValue  );
 583                 item->updateRepr();
 584                 sp_document_done( _desktop->doc() );
 585             }
 586             break;
 587
 588             case COL_LOCKED:
 589             {
 590                 bool newValue = !row[_model->_colLocked];
 591                 row[_model->_colLocked] = newValue;
 592                 item->setLocked( newValue );
 593                 item->updateRepr();
 594                 sp_document_done( _desktop->doc() );
 595             }
 596             break;
 597         }
 598     }
 599 }
 600
 601 void LayersPanel::_handleButtonEvent(GdkEventButton* evt)
 602 {
 603     // TODO - fix to a better is-popup function
 604     if ( (evt->type == GDK_BUTTON_PRESS) && (evt->button == 3) ) {
 605
 606
 607         {
 608             Gtk::TreeModel::Path path;
 609             Gtk::TreeViewColumn* col = 0;
 610             int x = static_cast<int>(evt->x);
 611             int y = static_cast<int>(evt->y);
 612             int x2 = 0;
 613             int y2 = 0;
 614             if ( _tree.get_path_at_pos( x, y,
 615                                         path, col,
 616                                         x2, y2 ) ) {
 617                 _checkTreeSelection();
 618                 _popupMenu.popup(evt->button, evt->time);
 619             }
 620         }
 621
 622     }
 623 }
 624
 625 void LayersPanel::_handleRowChange( Gtk::TreeModel::Path const& path, Gtk::TreeModel::iterator const& iter )
 626 {
 627     Gtk::TreeModel::Row row = *iter;
 628     if ( row ) {
 629         SPObject* obj = row[_model->_colObject];
 630         if ( obj ) {
 631             gchar const* oldLabel = obj->label();
 632             Glib::ustring tmp = row[_model->_colLabel];
 633             if ( oldLabel && oldLabel[0] && !tmp.empty() && (tmp != oldLabel) ) {
 634                 _mgr->renameLayer( obj, tmp.c_str() );
 635                 row[_model->_colLabel] = obj->label();
 636             }
 637         }
 638     }
 639 }
 640
 641 bool LayersPanel::_rowSelectFunction( Glib::RefPtr<Gtk::TreeModel> const & model, Gtk::TreeModel::Path const & path, bool currentlySelected )
 642 {
 643     bool val = true;
 644     if ( !currentlySelected && _toggleEvent )
 645     {
 646         GdkEvent* event = gtk_get_current_event();
 647         if ( event ) {
 648             // (keep these checks separate, so we know when to call gdk_event_free()
 649             if ( event->type == GDK_BUTTON_PRESS ) {
 650                 GdkEventButton const* target = reinterpret_cast<GdkEventButton const*>(_toggleEvent);
 651                 GdkEventButton const* evtb = reinterpret_cast<GdkEventButton const*>(event);
 652
 653                 if ( (evtb->window == target->window)
 654                      && (evtb->send_event == target->send_event)
 655                      && (evtb->time == target->time)
 656                      && (evtb->state == target->state)
 657                     )
 658                 {
 659                     // Ooooh! It's a magic one
 660                     val = false;
 661                 }
 662             }
 663             gdk_event_free(event);
 664         }
 665     }
 666     return val;
 667 }
 668
 669
 670 void LayersPanel::_opacityChanged()
 671 {
 672     SPObject* layer = _selectedLayer();
 673
 674     if ( _desktop && layer && !_opacityConnection.blocked() ) {
 675         _opacityConnection.block();
 676
 677
 678         Gtk::Adjustment* adj = _opacity.get_adjustment();
 679         SPCSSAttr *css = sp_repr_css_attr_new();
 680
 681         Inkscape::CSSOStringStream os;
 682         os << CLAMP( adj->get_value(), 0.0, 1.0 );
 683         sp_repr_css_set_property( css, "opacity", os.str().c_str() );
 684
 685         sp_desktop_apply_css_recursive( layer, css, true );
 686         layer->updateRepr();
 687
 688         sp_repr_css_attr_unref( css );
 689
 690         sp_document_maybe_done( _desktop->doc(), "layers:opacity" );
 691
 692         _opacityConnection.unblock();
 693     }
 694 }
 695
 696
 697
 698 /**
 699  * Constructor
 700  */
 701 LayersPanel::LayersPanel() :
 702     Inkscape::UI::Widget::Panel( Glib::ustring(), "dialogs.layers" ),
 703     _maxNestDepth(20),
 704     _mgr(0),
 705     _desktop(0),
 706     _model(0),
 707     _pending(0),
 708     _toggleEvent(0)
 709 {
 710     _maxNestDepth = prefs_get_int_attribute_limited("dialogs.layers", "maxDepth", 20, 1, 1000);
 711
 712     ModelColumns *zoop = new ModelColumns();
 713     _model = zoop;
 714
 715     _store = Gtk::TreeStore::create( *zoop );
 716
 717     _tree.set_model( _store );
 718     _tree.set_headers_visible(false);
 719
 720     ImageToggler* eyeRenderer = manage( new ImageToggler("visible", "hidden") );
 721     int visibleColNum = _tree.append_column("vis", *eyeRenderer) - 1;
 722     eyeRenderer->signal_pre_toggle().connect( sigc::mem_fun(*this, &LayersPanel::_preToggle) );
 723     eyeRenderer->signal_toggled().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_toggled), (int)COL_VISIBLE) );
 724     eyeRenderer->property_activatable() = true;
 725     Gtk::TreeViewColumn* col = _tree.get_column(visibleColNum);
 726     if ( col ) {
 727         col->add_attribute( eyeRenderer->property_active(), _model->_colVisible );
 728     }
 729
 730     ImageToggler * renderer = manage( new ImageToggler("width_height_lock", "lock_unlocked") );
 731     int lockedColNum = _tree.append_column("lock", *renderer) - 1;
 732     renderer->signal_pre_toggle().connect( sigc::mem_fun(*this, &LayersPanel::_preToggle) );
 733     renderer->signal_toggled().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_toggled), (int)COL_LOCKED) );
 734     renderer->property_activatable() = true;
 735     col = _tree.get_column(lockedColNum);
 736     if ( col ) {
 737         col->add_attribute( renderer->property_active(), _model->_colLocked );
 738     }
 739
 740     int nameColNum = _tree.append_column_editable("Name", _model->_colLabel) - 1;
 741
 742     _tree.set_expander_column( *_tree.get_column(nameColNum) );
 743
 744
 745     _tree.get_selection()->signal_changed().connect( sigc::mem_fun(*this, &LayersPanel::_pushTreeSelectionToCurrent) );
 746     _tree.get_selection()->set_select_function( sigc::mem_fun(*this, &LayersPanel::_rowSelectFunction) );
 747
 748     _tree.get_model()->signal_row_changed().connect( sigc::mem_fun(*this, &LayersPanel::_handleRowChange) );
 749     _tree.signal_button_press_event().connect_notify( sigc::mem_fun(*this, &LayersPanel::_handleButtonEvent) );
 750
 751     _scroller.add( _tree );
 752     _scroller.set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC );
 753
 754
 755     _opacityBox.pack_start( *manage( new Gtk::Label(_("Opacity:"))), Gtk::PACK_SHRINK );
 756
 757     _opacity.set_draw_value(false);
 758     _opacity.set_value(1.0);
 759     _opacity.set_range(0.0, 1.0);
 760     _opacity.set_increments(0.01, 0.1);
 761     _opacityBox.pack_start( _opacity, Gtk::PACK_EXPAND_WIDGET );
 762
 763     Gtk::SpinButton* spinBtn = manage( new Gtk::SpinButton(*_opacity.get_adjustment(), 0.0, 3) );
 764
 765     _opacityBox.pack_end( *spinBtn, Gtk::PACK_SHRINK );
 766     _watching.push_back( &_opacityBox );
 767
 768     _getContents()->pack_start( _scroller, Gtk::PACK_EXPAND_WIDGET );
 769
 770     _getContents()->pack_end(_opacityBox, Gtk::PACK_SHRINK);
 771     _getContents()->pack_end(_buttonsRow, Gtk::PACK_SHRINK);
 772
 773     _opacityConnection = _opacity.get_adjustment()->signal_value_changed().connect( sigc::mem_fun(*this, &LayersPanel::_opacityChanged) );
 774
 775     SPDesktop* targetDesktop = SP_ACTIVE_DESKTOP;
 776
 777     _buttonsRow.set_child_min_width( 16 );
 778
 779     Gtk::Button* btn = manage( new Gtk::Button() );
 780     _styleButton( *btn, targetDesktop, SP_VERB_LAYER_NEW, GTK_STOCK_ADD, _("New") );
 781     btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_NEW) );
 782     _buttonsRow.add( *btn );
 783
 784     btn = manage( new Gtk::Button() );
 785     _styleButton( *btn, targetDesktop, SP_VERB_LAYER_TO_TOP, GTK_STOCK_GOTO_TOP, _("Top") );
 786     btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_TOP) );
 787     _watchingNonTop.push_back( btn );
 788     _buttonsRow.add( *btn );
 789
 790     btn = manage( new Gtk::Button() );
 791     _styleButton( *btn, targetDesktop, SP_VERB_LAYER_RAISE, GTK_STOCK_GO_UP, _("Up") );
 792     btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_UP) );
 793     _watchingNonTop.push_back( btn );
 794     _buttonsRow.add( *btn );
 795
 796     btn = manage( new Gtk::Button() );
 797     _styleButton( *btn, targetDesktop, SP_VERB_LAYER_LOWER, GTK_STOCK_GO_DOWN, _("Dn") );
 798     btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_DOWN) );
 799     _watchingNonBottom.push_back( btn );
 800     _buttonsRow.add( *btn );
 801
 802     btn = manage( new Gtk::Button() );
 803     _styleButton( *btn, targetDesktop, SP_VERB_LAYER_TO_BOTTOM, GTK_STOCK_GOTO_BOTTOM, _("Bot") );
 804     btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_BOTTOM) );
 805     _watchingNonBottom.push_back( btn );
 806     _buttonsRow.add( *btn );
 807
 808 //     btn = manage( new Gtk::Button("Dup") );
 809 //     btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_DUPLICATE) );
 810 //     _buttonsRow.add( *btn );
 811
 812     btn = manage( new Gtk::Button() );
 813     _styleButton( *btn, targetDesktop, SP_VERB_LAYER_DELETE, GTK_STOCK_REMOVE, _("X") );
 814     btn->signal_clicked().connect( sigc::bind( sigc::mem_fun(*this, &LayersPanel::_takeAction), (int)BUTTON_DELETE) );
 815     _watching.push_back( btn );
 816     _buttonsRow.add( *btn );
 817
 818
 819
 820
 821     // -------------------------------------------------------
 822     {
 823         _watching.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_RENAME, 0, "Rename", (int)BUTTON_RENAME ) );
 824         _watching.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_NEW, 0, "New", (int)BUTTON_NEW ) );
 825
 826          _popupMenu.items().push_back( Gtk::Menu_Helpers::SeparatorElem() );
 827
 828         _watchingNonTop.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_RAISE, GTK_STOCK_GO_UP, "Up", (int)BUTTON_UP ) );
 829         _watchingNonBottom.push_back( &_addPopupItem( targetDesktop, SP_VERB_LAYER_LOWER, GTK_STOCK_GO_DOWN, "Down", (int)BUTTON_DOWN ) );
 830
 831         _popupMenu.show_all_children();
 832     }
 833     // -------------------------------------------------------
 834
 835
 836
 837     for ( std::vector<Gtk::Widget*>::iterator it = _watching.begin(); it != _watching.end(); ++it ) {
 838         (*it)->set_sensitive( false );
 839     }
 840     for ( std::vector<Gtk::Widget*>::iterator it = _watchingNonTop.begin(); it != _watchingNonTop.end(); ++it ) {
 841         (*it)->set_sensitive( false );
 842     }
 843     for ( std::vector<Gtk::Widget*>::iterator it = _watchingNonBottom.begin(); it != _watchingNonBottom.end(); ++it ) {
 844         (*it)->set_sensitive( false );
 845     }
 846
 847     g_signal_connect( G_OBJECT(INKSCAPE), "activate_desktop", G_CALLBACK( layers_panel_activated ), this );
 848
 849
 850     setDesktop( targetDesktop );
 851
 852
 853
 854     show_all_children();
 855
 856     restorePanelPrefs();
 857 }
 858
 859 LayersPanel::~LayersPanel()
 860 {
 861     if ( _model )
 862     {
 863         delete _model;
 864     }
 865
 866     if ( _toggleEvent )
 867     {
 868         gdk_event_free( _toggleEvent );
 869         _toggleEvent = 0;
 870     }
 871 }
 872
 873
 874 void LayersPanel::setDesktop( SPDesktop* desktop )
 875 {
 876     if ( desktop != _desktop ) {
 877         _layerChangedConnection.disconnect();
 878         _layerUpdatedConnection.disconnect();
 879         _changedConnection.disconnect();
 880         if ( _mgr ) {
 881             _mgr = 0;
 882         }
 883         if ( _desktop ) {
 884             _desktop = 0;
 885         }
 886
 887         _desktop = SP_ACTIVE_DESKTOP;
 888         if ( _desktop ) {
 889             setLabel( _desktop->doc()->name );
 890
 891             _mgr = _desktop->layer_manager;
 892             if ( _mgr ) {
 893                 _layerChangedConnection = _mgr->connectCurrentLayerChanged( sigc::mem_fun(*this, &LayersPanel::_selectLayer) );
 894                 _layerUpdatedConnection = _mgr->connectLayerDetailsChanged( sigc::mem_fun(*this, &LayersPanel::_updateLayer) );
 895                 _changedConnection = _mgr->connectChanged( sigc::mem_fun(*this, &LayersPanel::_layersChanged) );
 896             }
 897
 898             _layersChanged();
 899         }
 900     }
 901 /*
 902     GSList const *layers=sp_document_get_resource_list( _desktop->doc(), "layer" );
 903     g_message( "layers list starts at %p", layers );
 904     for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
 905         SPObject *layer=static_cast<SPObject *>(iter->data);
 906         g_message("  {%s}   [%s]", layer->id, layer->label() );
 907     }
 908 */
 909 }
 910
 911
 912
 913 } //namespace Dialogs
 914 } //namespace UI
 915 } //namespace Inkscape
 916
 917
 918 /*
 919   Local Variables:
 920   mode:c++
 921   c-file-style:"stroustrup"
 922   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 923   indent-tabs-mode:nil
 924   fill-column:99
 925   End:
 926 */
 927 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :