1 /**
2 * \brief LivePathEffect dialog
3 *
4 * Authors:
5 * Johan Engelen <j.b.c.engelen@utwente.nl>
6 *
7 * Copyright (C) 2007 Author
8 *
9 * Released under GNU GPL. Read the file 'COPYING' for more information.
10 */
12 #ifdef HAVE_CONFIG_H
13 # include <config.h>
14 #endif
16 #include <glibmm/i18n.h>
17 #include "livepatheffect-editor.h"
18 #include "verbs.h"
19 #include "selection.h"
20 #include "sp-shape.h"
21 #include "sp-path.h"
22 #include "live_effects/effect.h"
23 #include "live_effects/lpeobject.h"
24 #include "gtkmm/widget.h"
25 #include <vector>
26 #include "inkscape.h"
27 #include "desktop-handles.h"
28 #include "desktop.h"
29 #include "document-private.h"
30 #include "xml/node.h"
31 #include "xml/document.h"
33 namespace Inkscape {
34 class Application;
36 namespace UI {
37 namespace Dialog {
40 /*####################
41 * Callback functions
42 */
43 static void lpeeditor_selection_changed (Inkscape::Selection * selection, gpointer data)
44 {
45 LivePathEffectEditor *lpeeditor = static_cast<LivePathEffectEditor *>(data);
46 lpeeditor->onSelectionChanged(selection);
47 }
49 static void lpeeditor_selection_modified (Inkscape::Selection *selection, guint flags, gpointer data)
50 {
51 lpeeditor_selection_changed (selection, data);
52 }
55 static void lpeeditor_desktop_change(Inkscape::Application*, SPDesktop* desktop, void *data)
56 {
57 if (!desktop) {
58 return;
59 }
60 LivePathEffectEditor* editor = reinterpret_cast<LivePathEffectEditor*>(data);
61 editor->setDesktop(desktop);
62 }
66 /*#######################
67 * LivePathEffectEditor
68 */
69 LivePathEffectEditor::LivePathEffectEditor(Behavior::BehaviorFactory behavior_factory)
70 : Dialog (behavior_factory, "dialogs.livepatheffect", SP_VERB_DIALOG_LIVE_PATH_EFFECT),
71 combo_effecttype(Inkscape::LivePathEffect::LPETypeConverter),
72 button_apply(_("_Apply"), _("Apply chosen effect to selection")),
73 button_remove(_("_Remove"), _("Remove effect from selection")),
74 effectwidget(NULL),
75 explain_label("", Gtk::ALIGN_CENTER),
76 effectapplication_frame(_("Apply new effect")),
77 effectcontrol_frame(_("Current effect")),
78 current_desktop(NULL)
79 {
80 // Top level vbox
81 Gtk::VBox *vbox = get_vbox();
82 vbox->set_spacing(4);
84 effectapplication_hbox.set_spacing(4);
85 effectcontrol_vbox.set_spacing(4);
87 effectapplication_hbox.pack_start(combo_effecttype, true, true);
88 effectapplication_hbox.pack_start(button_apply, true, true);
89 effectapplication_frame.add(effectapplication_hbox);
91 effectcontrol_vbox.pack_start(explain_label, true, true);
92 effectcontrol_vbox.pack_end(button_remove, true, true);
93 effectcontrol_frame.add(effectcontrol_vbox);
95 vbox->pack_start(effectapplication_frame, true, true);
96 vbox->pack_start(effectcontrol_frame, true, true);
98 // connect callback functions to buttons
99 button_apply.signal_clicked().connect(sigc::mem_fun(*this, &LivePathEffectEditor::onApply));
100 button_remove.signal_clicked().connect(sigc::mem_fun(*this, &LivePathEffectEditor::onRemove));
102 // connect callback functions to changes in selected desktop.
103 g_signal_connect( G_OBJECT(INKSCAPE), "activate_desktop",
104 G_CALLBACK(lpeeditor_desktop_change), this);
106 g_signal_connect( G_OBJECT(INKSCAPE), "deactivate_desktop",
107 G_CALLBACK(lpeeditor_desktop_change), this);
109 setDesktop(SP_ACTIVE_DESKTOP);
110 show_all_children();
112 button_remove.hide();
113 }
115 LivePathEffectEditor::~LivePathEffectEditor()
116 {
117 if (effectwidget) {
118 effectcontrol_vbox.remove(*effectwidget);
119 effectwidget = NULL;
120 }
122 if (current_desktop) {
123 selection_changed_connection.disconnect();
124 selection_modified_connection.disconnect();
125 }
126 }
128 void
129 LivePathEffectEditor::showParams(LivePathEffect::Effect* effect)
130 {
131 if (effectwidget) {
132 effectcontrol_vbox.remove(*effectwidget);
133 effectwidget = NULL;
134 }
136 explain_label.set_markup("<b>" + effect->getName() + "</b>");
137 effectwidget = effect->getWidget();
138 if (effectwidget) {
139 effectcontrol_vbox.pack_start(*effectwidget, true, true);
140 }
141 button_remove.show();
143 effectcontrol_vbox.show_all_children();
144 // fixme: do resizing of dialog
145 }
147 void
148 LivePathEffectEditor::showText(Glib::ustring const &str)
149 {
150 if (effectwidget) {
151 effectcontrol_vbox.remove(*effectwidget);
152 effectwidget = NULL;
153 }
155 explain_label.set_label(str);
156 button_remove.hide();
158 // fixme: do resizing of dialog ?
159 }
161 void
162 LivePathEffectEditor::set_sensitize_all(bool sensitive)
163 {
164 combo_effecttype.set_sensitive(sensitive);
165 button_apply.set_sensitive(sensitive);
166 button_remove.set_sensitive(sensitive);
167 }
169 void
170 LivePathEffectEditor::onSelectionChanged(Inkscape::Selection *sel)
171 {
172 if ( sel && !sel->isEmpty() ) {
173 SPItem *item = sel->singleItem();
174 if ( item ) {
175 if ( SP_IS_SHAPE(item) ) {
176 SPShape *shape = SP_SHAPE(item);
177 LivePathEffectObject *lpeobj = sp_shape_get_livepatheffectobject(shape);
178 set_sensitize_all(true);
179 if (lpeobj) {
180 if (lpeobj->lpe) {
181 showParams(lpeobj->lpe);
182 } else {
183 showText(_("Unknown effect is applied"));
184 }
185 } else {
186 showText(_("No effect applied"));
187 button_remove.set_sensitive(false);
188 }
189 } else {
190 showText(_("Item is not a shape or path"));
191 set_sensitize_all(false);
192 }
193 } else {
194 showText(_("Only one item can be selected"));
195 set_sensitize_all(false);
196 }
197 } else {
198 showText(_("Empty selection"));
199 set_sensitize_all(false);
200 }
201 }
203 void
204 LivePathEffectEditor::setDesktop(SPDesktop *desktop)
205 {
207 if ( desktop == current_desktop ) {
208 return;
209 }
211 if (current_desktop) {
212 selection_changed_connection.disconnect();
213 selection_modified_connection.disconnect();
214 }
216 current_desktop = desktop;
217 if (desktop) {
218 Inkscape::Selection *selection = sp_desktop_selection(desktop);
219 selection_changed_connection = selection->connectChanged(
220 sigc::bind (sigc::ptr_fun(&lpeeditor_selection_changed), this ) );
221 selection_modified_connection = selection->connectModified(
222 sigc::bind (sigc::ptr_fun(&lpeeditor_selection_modified), this ) );
224 onSelectionChanged(selection);
225 } else {
226 onSelectionChanged(NULL);
227 }
228 }
233 /*########################################################################
234 # BUTTON CLICK HANDLERS (callbacks)
235 ########################################################################*/
237 // TODO: factor out the effect applying code which can be called from anywhere. (selection-chemistry.cpp also needs it)
239 void
240 LivePathEffectEditor::onApply()
241 {
242 Inkscape::Selection *sel = _getSelection();
243 if ( sel && !sel->isEmpty() ) {
244 SPItem *item = sel->singleItem();
245 if ( item && SP_IS_SHAPE(item) ) {
246 SPDocument *doc = current_desktop->doc();
248 const Util::EnumData<LivePathEffect::EffectType>* data = combo_effecttype.get_active_data();
249 if (!data) return;
251 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
252 Inkscape::XML::Node *repr = xml_doc->createElement("inkscape:path-effect");
253 repr->setAttribute("effect", data->key.c_str() );
255 SP_OBJECT_REPR(SP_DOCUMENT_DEFS(doc))->addChild(repr, NULL); // adds to <defs> and assigns the 'id' attribute
256 const gchar * repr_id = repr->attribute("id");
257 Inkscape::GC::release(repr);
259 gchar *href = g_strdup_printf("#%s", repr_id);
260 sp_shape_set_path_effect(SP_SHAPE(item), href);
261 g_free(href);
263 // make sure there is an original-d for paths!!!
264 if ( SP_IS_PATH(item) ) {
265 Inkscape::XML::Node *pathrepr = SP_OBJECT_REPR(item);
266 if ( ! pathrepr->attribute("inkscape:original-d") ) {
267 pathrepr->setAttribute("inkscape:original-d", pathrepr->attribute("d"));
268 }
269 }
271 LivePathEffectObject *lpeobj = sp_shape_get_livepatheffectobject(SP_SHAPE(item));
272 if (lpeobj && lpeobj->lpe) {
273 lpeobj->lpe->resetDefaults(item);
274 }
276 sp_document_done(doc, SP_VERB_DIALOG_LIVE_PATH_EFFECT,
277 _("Create and apply path effect"));
278 }
279 }
280 }
282 void
283 LivePathEffectEditor::onRemove()
284 {
285 Inkscape::Selection *sel = _getSelection();
286 if ( sel && !sel->isEmpty() ) {
287 SPItem *item = sel->singleItem();
288 if ( item && SP_IS_SHAPE(item) ) {
289 sp_shape_remove_path_effect(SP_SHAPE(item));
290 sp_document_done ( sp_desktop_document (current_desktop), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
291 _("Remove path effect") );
292 }
293 }
294 }
298 } // namespace Dialog
299 } // namespace UI
300 } // namespace Inkscape