src/layer-manager.cpp

   1 /*
   2  * Inkscape::LayerManager - a view of a document's layers, relative
   3  *                          to a particular desktop
   4  *
   5  * Copyright 2006  MenTaLguY  <mental@rydia.net>
   6  *
   7  * Released under GNU GPL, read the file 'COPYING' for more information
   8  */
   9
  10 #include <sigc++/functors/mem_fun.h>
  11 #include <sigc++/adaptors/hide.h>
  12 #include "gc-managed.h"
  13 #include "gc-finalized.h"
  14 #include "document.h"
  15 #include "desktop.h"
  16 #include "layer-manager.h"
  17 #include "ui/view/view.h"
  18 #include "sp-object.h"
  19
  20 namespace Inkscape {
  21
  22 LayerManager::LayerManager(SPDesktop *desktop)
  23 : _desktop(desktop), _document(NULL)
  24 {
  25     _layer_connection = desktop->connectCurrentLayerChanged(sigc::hide<0>(sigc::mem_fun(*this, &LayerManager::_rebuild)));
  26     _document_connection = desktop->connectDocumentReplaced(sigc::hide<0>(sigc::mem_fun(*this, &LayerManager::_setDocument)));
  27     _setDocument(desktop->doc());
  28 }
  29
  30 void LayerManager::_setDocument(SPDocument *document) {
  31     if (_document) {
  32         _resource_connection.disconnect();
  33     }
  34     _document = document;
  35     if (document) {
  36         _resource_connection = sp_document_resources_changed_connect(document, "layer", sigc::mem_fun(*this, &LayerManager::_rebuild));
  37     }
  38     _rebuild();
  39 }
  40
  41 void LayerManager::_rebuild() {
  42     _clear();
  43     GSList const *layers=sp_document_get_resource_list(_document, "layers");
  44     for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
  45         SPObject *layer=static_cast<SPObject *>(iter->data);
  46         _addOne(layer);
  47     }
  48     SPObject *root=_desktop->currentRoot();
  49     SPObject *layer=_desktop->currentLayer();
  50     for ( ; layer ; layer = SP_OBJECT_PARENT(layer) ) {
  51         if (!includes(layer)) {
  52             _addOne(layer);
  53         }
  54         if ( layer == root ) {
  55             break;
  56         }
  57     }
  58 }
  59
  60 }
  61
  62 /*
  63   Local Variables:
  64   mode:c++
  65   c-file-style:"stroustrup"
  66   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  67   indent-tabs-mode:nil
  68   fill-column:99
  69   End:
  70 */
  71 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :