src/ui/dialog/livepatheffect-editor.cpp

   1 /**\r
   2  * \brief LivePathEffect dialog\r
   3  *\r
   4  * Authors:\r
   5  *   Johan Engelen <j.b.c.engelen@utwente.nl>\r
   6  *\r
   7  * Copyright (C) 2007 Author\r
   8  *\r
   9  * Released under GNU GPL.  Read the file 'COPYING' for more information.\r
  10  */\r
  11 \r
  12 #ifdef HAVE_CONFIG_H\r
  13 # include <config.h>\r
  14 #endif\r
  15 \r
  16 #include <glibmm/i18n.h>\r
  17 #include "livepatheffect-editor.h"\r
  18 #include "verbs.h"\r
  19 #include "selection.h"\r
  20 #include "sp-shape.h"\r
  21 #include "sp-path.h"\r
  22 #include "live_effects/effect.h"\r
  23 #include "live_effects/lpeobject.h"\r
  24 #include "gtkmm/widget.h"\r
  25 #include <vector>\r
  26 #include "inkscape.h"\r
  27 #include "desktop-handles.h"\r
  28 #include "desktop.h"\r
  29 #include "document-private.h"\r
  30 #include "xml/node.h"\r
  31 #include "xml/document.h"\r
  32 \r
  33 namespace Inkscape {\r
  34 class Application;\r
  35 \r
  36 namespace UI {\r
  37 namespace Dialog {\r
  38 \r
  39 \r
  40 /*####################\r
  41  * Callback functions\r
  42  */\r
  43 static void lpeeditor_selection_changed (Inkscape::Selection * selection, gpointer data)\r
  44 {\r
  45     LivePathEffectEditor *lpeeditor = static_cast<LivePathEffectEditor *>(data);\r
  46     lpeeditor->onSelectionChanged(selection);\r
  47 }\r
  48 \r
  49 static void lpeeditor_selection_modified (Inkscape::Selection *selection, guint flags, gpointer data)\r
  50 {\r
  51     lpeeditor_selection_changed (selection, data);\r
  52 }\r
  53 \r
  54 \r
  55 static void lpeeditor_desktop_change(Inkscape::Application*, SPDesktop* desktop, void *data)\r
  56 {\r
  57     if (!desktop) {\r
  58         return;\r
  59     }\r
  60     LivePathEffectEditor* editor = reinterpret_cast<LivePathEffectEditor*>(data);\r
  61     editor->setDesktop(desktop);\r
  62 }\r
  63 \r
  64 \r
  65 \r
  66 /*#######################\r
  67  * LivePathEffectEditor\r
  68  */\r
  69 LivePathEffectEditor::LivePathEffectEditor(Behavior::BehaviorFactory behavior_factory) \r
  70     : Dialog (behavior_factory, "dialogs.livepatheffect", SP_VERB_DIALOG_LIVE_PATH_EFFECT),\r
  71       combo_effecttype(Inkscape::LivePathEffect::LPETypeConverter),\r
  72       button_apply(_("_Apply"), _("Apply chosen effect to selection")),\r
  73       button_remove(_("_Remove"), _("Remove effect from selection")),\r
  74       effectwidget(NULL),\r
  75       explain_label("", Gtk::ALIGN_CENTER),\r
  76       effectapplication_frame(_("Apply new effect")),\r
  77       effectcontrol_frame(_("Current effect")),\r
  78       current_desktop(NULL)\r
  79 {\r
  80     // Top level vbox\r
  81     Gtk::VBox *vbox = get_vbox();\r
  82     vbox->set_spacing(4);\r
  83 \r
  84     effectapplication_vbox.set_spacing(4);\r
  85     effectcontrol_vbox.set_spacing(4);\r
  86 \r
  87     effectapplication_vbox.pack_start(combo_effecttype, true, true);\r
  88     effectapplication_vbox.pack_start(button_apply, true, true);\r
  89     effectapplication_vbox.pack_start(button_remove, true, true);\r
  90     effectapplication_frame.add(effectapplication_vbox);\r
  91 \r
  92     effectcontrol_vbox.pack_start(explain_label, true, true);\r
  93     effectcontrol_frame.add(effectcontrol_vbox);\r
  94 \r
  95     vbox->pack_start(effectapplication_frame, true, true);\r
  96     vbox->pack_start(effectcontrol_frame, true, true);\r
  97 \r
  98     // connect callback functions to buttons\r
  99     button_apply.signal_clicked().connect(sigc::mem_fun(*this, &LivePathEffectEditor::onApply));\r
 100     button_remove.signal_clicked().connect(sigc::mem_fun(*this, &LivePathEffectEditor::onRemove));\r
 101 \r
 102     // connect callback functions to changes in selected desktop.\r
 103     g_signal_connect( G_OBJECT(INKSCAPE), "activate_desktop",\r
 104                        G_CALLBACK(lpeeditor_desktop_change), this);\r
 105 \r
 106     g_signal_connect( G_OBJECT(INKSCAPE), "deactivate_desktop",\r
 107                        G_CALLBACK(lpeeditor_desktop_change), this);\r
 108 \r
 109     setDesktop(SP_ACTIVE_DESKTOP);\r
 110     show_all_children();\r
 111 }\r
 112 \r
 113 LivePathEffectEditor::~LivePathEffectEditor() \r
 114 {\r
 115     if (effectwidget) {\r
 116         effectcontrol_vbox.remove(*effectwidget);\r
 117         effectwidget = NULL;\r
 118     }\r
 119 \r
 120     if (current_desktop) {\r
 121         selection_changed_connection.disconnect();\r
 122         selection_modified_connection.disconnect();\r
 123     }\r
 124 }\r
 125 \r
 126 void\r
 127 LivePathEffectEditor::showParams(LivePathEffect::Effect* effect)\r
 128 {\r
 129     if (effectwidget) {\r
 130         effectcontrol_vbox.remove(*effectwidget);\r
 131         effectwidget = NULL;\r
 132     }\r
 133 \r
 134     explain_label.set_markup("<b>" + effect->getName() + "</b>");\r
 135     effectwidget = effect->getWidget();\r
 136     if (effectwidget) {\r
 137         effectcontrol_vbox.pack_start(*effectwidget, true, true);\r
 138     }\r
 139 \r
 140     effectcontrol_vbox.show_all_children();\r
 141     // fixme: do resizing of dialog \r
 142 }\r
 143 \r
 144 void\r
 145 LivePathEffectEditor::showText(Glib::ustring const &str)\r
 146 {\r
 147     if (effectwidget) {\r
 148         effectcontrol_vbox.remove(*effectwidget);\r
 149         effectwidget = NULL;\r
 150     }\r
 151 \r
 152     explain_label.set_label(str);\r
 153 \r
 154     // fixme: do resizing of dialog ?\r
 155 }\r
 156 \r
 157 void\r
 158 LivePathEffectEditor::set_sensitize_all(bool sensitive)\r
 159 {\r
 160     combo_effecttype.set_sensitive(sensitive);\r
 161     button_apply.set_sensitive(sensitive);\r
 162     button_remove.set_sensitive(sensitive);\r
 163 }\r
 164 \r
 165 void\r
 166 LivePathEffectEditor::onSelectionChanged(Inkscape::Selection *sel)\r
 167 {\r
 168     if ( sel && !sel->isEmpty() ) {\r
 169         SPItem *item = sel->singleItem();\r
 170         if ( item ) {\r
 171             if ( SP_IS_SHAPE(item) ) {\r
 172                 SPShape *shape = SP_SHAPE(item);\r
 173                 LivePathEffectObject *lpeobj = sp_shape_get_livepatheffectobject(shape);\r
 174                 set_sensitize_all(true);\r
 175                 if (lpeobj) {\r
 176                     if (lpeobj->lpe) {\r
 177                         showParams(lpeobj->lpe);\r
 178                     } else {\r
 179                         showText(_("Unknown effect is applied"));\r
 180                     }\r
 181                 } else {\r
 182                     showText(_("No effect applied"));\r
 183                     button_remove.set_sensitive(false);\r
 184                 }\r
 185             } else {\r
 186                 showText(_("Item is not a shape"));\r
 187                 set_sensitize_all(false);\r
 188             }\r
 189         } else {\r
 190             showText(_("Only one item can be selected"));\r
 191             set_sensitize_all(false);\r
 192         }\r
 193     } else {\r
 194         showText(_("Empty selection"));\r
 195         set_sensitize_all(false);\r
 196     }\r
 197 }\r
 198 \r
 199 void \r
 200 LivePathEffectEditor::setDesktop(SPDesktop *desktop)\r
 201 {\r
 202 \r
 203     if ( desktop == current_desktop ) {\r
 204         return;\r
 205     }\r
 206 \r
 207     if (current_desktop) {\r
 208         selection_changed_connection.disconnect();\r
 209         selection_modified_connection.disconnect();\r
 210     }\r
 211 \r
 212     current_desktop = desktop;\r
 213     if (desktop) {\r
 214         Inkscape::Selection *selection = sp_desktop_selection(desktop);\r
 215         selection_changed_connection = selection->connectChanged(\r
 216             sigc::bind (sigc::ptr_fun(&lpeeditor_selection_changed), this ) );\r
 217         selection_modified_connection = selection->connectModified(\r
 218             sigc::bind (sigc::ptr_fun(&lpeeditor_selection_modified), this ) );\r
 219 \r
 220         onSelectionChanged(selection);\r
 221     } else {\r
 222         onSelectionChanged(NULL);\r
 223     }\r
 224 }\r
 225 \r
 226 \r
 227 \r
 228 \r
 229 /*########################################################################\r
 230 # BUTTON CLICK HANDLERS    (callbacks)\r
 231 ########################################################################*/\r
 232 \r
 233 // TODO:  factor out the effect applying code which can be called from anywhere. (selection-chemistry.cpp also needs it)\r
 234 \r
 235 void\r
 236 LivePathEffectEditor::onApply()\r
 237 {\r
 238     Inkscape::Selection *sel = _getSelection();\r
 239     if ( sel && !sel->isEmpty() ) {\r
 240         SPItem *item = sel->singleItem();\r
 241         if ( item && SP_IS_SHAPE(item) ) {\r
 242             SPDocument *doc = current_desktop->doc();\r
 243 \r
 244             const Util::EnumData<LivePathEffect::EffectType>* data = combo_effecttype.get_active_data();\r
 245             if (!data) return;\r
 246 \r
 247             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);\r
 248             Inkscape::XML::Node *repr = xml_doc->createElement("inkscape:path-effect");\r
 249             repr->setAttribute("effect", data->key.c_str() );\r
 250 \r
 251             SP_OBJECT_REPR(SP_DOCUMENT_DEFS(doc))->addChild(repr, NULL); // adds to <defs> and assigns the 'id' attribute\r
 252             const gchar * repr_id = repr->attribute("id");\r
 253             Inkscape::GC::release(repr);\r
 254 \r
 255             gchar *href = g_strdup_printf("#%s", repr_id);\r
 256             sp_shape_set_path_effect(SP_SHAPE(item), href);\r
 257             g_free(href);\r
 258 \r
 259             // make sure there is an original-d for paths!!!\r
 260             if ( SP_IS_PATH(item) ) {\r
 261                 Inkscape::XML::Node *pathrepr = SP_OBJECT_REPR(item);\r
 262                 if ( ! pathrepr->attribute("inkscape:original-d") ) {\r
 263                     pathrepr->setAttribute("inkscape:original-d", pathrepr->attribute("d"));\r
 264                 }\r
 265             }\r
 266 \r
 267             sp_document_done(doc, SP_VERB_DIALOG_LIVE_PATH_EFFECT, \r
 268                              _("Create and apply live effect"));\r
 269         }\r
 270     }\r
 271 }\r
 272 \r
 273 void\r
 274 LivePathEffectEditor::onRemove()\r
 275 {\r
 276     Inkscape::Selection *sel = _getSelection();\r
 277     if ( sel && !sel->isEmpty() ) {\r
 278         SPItem *item = sel->singleItem();\r
 279         if ( item && SP_IS_SHAPE(item) ) {\r
 280             sp_shape_remove_path_effect(SP_SHAPE(item));\r
 281             sp_document_done ( sp_desktop_document (current_desktop), SP_VERB_DIALOG_LIVE_PATH_EFFECT, \r
 282                                _("Remove live path effect") );\r
 283         }\r
 284     }\r
 285 }\r
 286 \r
 287 \r
 288 \r
 289 } // namespace Dialog\r
 290 } // namespace UI\r
 291 } // namespace Inkscape\r
 292 \r