1 /**
2 * \brief Undo History dialog
3 *
4 * Author:
5 * Gustav Broberg <broberg@kth.se>
6 *
7 * Copyright (C) 2006 Authors
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 <gtk/gtkimage.h>
18 #include <sigc++/sigc++.h>
21 #include "document.h"
22 #include "inkscape.h"
23 #include "ui/icons.h"
24 #include "verbs.h"
26 #include "undo-history.h"
28 namespace Inkscape {
29 namespace UI {
30 namespace Dialog {
32 /* Rendering functions for custom cell renderers */
34 void
35 CellRendererSPIcon::render_vfunc(const Glib::RefPtr<Gdk::Drawable>& window,
36 Gtk::Widget& widget,
37 const Gdk::Rectangle& background_area,
38 const Gdk::Rectangle& cell_area,
39 const Gdk::Rectangle& expose_area,
40 Gtk::CellRendererState flags)
41 {
42 // if this event type doesn't have an icon...
43 if ( !Inkscape::Verb::get(_property_event_type)->get_image() ) return;
45 // if the icon isn't cached, render it to a pixbuf
46 if ( !_icon_cache[_property_event_type] ) {
48 Glib::ustring image = Inkscape::Verb::get(_property_event_type)->get_image();
49 Gtk::Widget* icon = sp_icon_get_icon(image, Inkscape::ICON_SIZE_MENU);
51 if (icon) {
53 // check icon type (inkscape, gtk, none)
54 if ( SP_IS_ICON(icon->gobj()) ) {
55 SPIcon* sp_icon = SP_ICON(icon->gobj());
56 sp_icon_fetch_pixbuf(sp_icon);
57 _property_icon = Glib::wrap(sp_icon->pb, true);
58 } else if ( GTK_IS_IMAGE(icon->gobj()) ) {
59 _property_icon = Gtk::Invisible().render_icon(Gtk::StockID(image),
60 Gtk::ICON_SIZE_MENU);
61 } else {
62 delete icon;
63 return;
64 }
66 delete icon;
67 property_pixbuf() = _icon_cache[_property_event_type] = _property_icon.get_value();
68 }
70 } else {
71 property_pixbuf() = _icon_cache[_property_event_type];
72 }
74 Gtk::CellRendererPixbuf::render_vfunc(window, widget, background_area,
75 cell_area, expose_area, flags);
76 }
79 void
80 CellRendererInt::render_vfunc(const Glib::RefPtr<Gdk::Drawable>& window,
81 Gtk::Widget& widget,
82 const Gdk::Rectangle& background_area,
83 const Gdk::Rectangle& cell_area,
84 const Gdk::Rectangle& expose_area,
85 Gtk::CellRendererState flags)
86 {
87 if( _filter(_property_number) ) {
88 std::ostringstream s;
89 s << _property_number << std::flush;
90 property_text() = s.str();
91 Gtk::CellRendererText::render_vfunc(window, widget, background_area,
92 cell_area, expose_area, flags);
93 }
94 }
96 const CellRendererInt::Filter& CellRendererInt::no_filter = CellRendererInt::NoFilter();
99 UndoHistory::UndoHistory()
100 : Dialog ("dialogs.undo-history", SP_VERB_DIALOG_UNDO_HISTORY),
101 _document (SP_ACTIVE_DOCUMENT),
102 _event_log (_document ? &_document->getEventLog() : NULL),
103 _columns (_event_log ? &_event_log->getColumns() : NULL),
104 _event_list_selection (_event_list_view.get_selection())
105 {
106 if( !_document || !_event_log || !_columns ) return;
108 set_size_request(300, 400);
110 get_vbox()->pack_start(_scrolled_window);
111 _scrolled_window.set_policy(Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
113 _event_list_store = _event_log->getEventListStore();
115 _event_list_view.set_model(_event_list_store);
116 _event_list_view.set_rules_hint(false);
117 _event_list_view.set_enable_search(false);
118 _event_list_view.set_headers_visible(false);
120 CellRendererSPIcon* icon_renderer = Gtk::manage(new CellRendererSPIcon());
121 icon_renderer->property_xpad() = 8;
122 icon_renderer->property_width() = 36;
123 int cols_count = _event_list_view.append_column("Icon", *icon_renderer);
125 Gtk::TreeView::Column* icon_column = _event_list_view.get_column(cols_count-1);
126 icon_column->add_attribute(icon_renderer->property_event_type(), _columns->type);
128 Gtk::CellRendererText* description_renderer = Gtk::manage(new Gtk::CellRendererText());
130 cols_count = _event_list_view.append_column("Description", *description_renderer);
131 Gtk::TreeView::Column* description_column = _event_list_view.get_column(cols_count-1);
132 description_column->add_attribute(description_renderer->property_text(), _columns->description);
133 description_column->set_resizable();
135 _event_list_view.set_expander_column( *_event_list_view.get_column(cols_count-1) );
137 CellRendererInt* children_renderer = Gtk::manage(new CellRendererInt(greater_than_1));
138 children_renderer->property_weight() = 600; // =Pango::WEIGHT_SEMIBOLD (not defined in old versions of pangomm)
139 children_renderer->property_xalign() = 1.0;
140 children_renderer->property_xpad() = 20;
142 cols_count = _event_list_view.append_column("Children", *children_renderer);
143 Gtk::TreeView::Column* children_column = _event_list_view.get_column(cols_count-1);
144 children_column->add_attribute(children_renderer->property_number(), _columns->child_count);
146 _scrolled_window.add(_event_list_view);
148 // connect callbacks
149 _callback_connections[EventLog::CALLB_SELECTION_CHANGE] =
150 _event_list_selection->signal_changed().connect(sigc::mem_fun(*this, &Inkscape::UI::Dialog::UndoHistory::_onListSelectionChange));
152 _callback_connections[EventLog::CALLB_EXPAND] =
153 _event_list_view.signal_row_expanded().connect(sigc::mem_fun(*this, &Inkscape::UI::Dialog::UndoHistory::_onExpandEvent));
155 _callback_connections[EventLog::CALLB_COLLAPSE] =
156 _event_list_view.signal_row_collapsed().connect(sigc::mem_fun(*this, &Inkscape::UI::Dialog::UndoHistory::_onCollapseEvent));
158 // connect with the event log
159 _event_log->connectWithDialog(&_event_list_view, &_callback_connections);
161 _event_list_view.scroll_to_row(_event_list_store->get_path(_event_list_selection->get_selected()));
163 show_all_children();
165 }
167 UndoHistory::~UndoHistory()
168 {
169 }
171 void
172 UndoHistory::_onListSelectionChange()
173 {
175 EventLog::const_iterator selected = _event_list_selection->get_selected();
177 /* If no event is selected in the view, find the right one and select it. This happens whenever
178 * a branch we're currently in is collapsed.
179 */
180 if (!selected) {
182 EventLog::iterator curr_event = _event_log->getCurrEvent();
184 if (curr_event->parent()) {
186 EventLog::iterator curr_event_parent = curr_event->parent();
187 EventLog::iterator last = curr_event_parent->children().end();
189 _event_log->blockNotifications();
190 for ( --last ; curr_event != last ; ++curr_event ) {
191 sp_document_redo(_document);
192 }
193 _event_log->blockNotifications(false);
195 _event_log->setCurrEvent(curr_event);
196 _event_list_selection->select(curr_event_parent);
198 } else { // this should not happen
199 _event_list_selection->select(curr_event);
200 }
202 } else {
204 EventLog::const_iterator last_selected = _event_log->getCurrEvent();
206 /* Selecting a collapsed parent event is equal to selecting the last child
207 * of that parent's branch.
208 */
210 if ( !selected->children().empty() &&
211 !_event_list_view.row_expanded(_event_list_store->get_path(selected)) )
212 {
213 selected = selected->children().end();
214 --selected;
215 }
217 // An event before the current one has been selected. Undo to the selected event.
218 if ( _event_list_store->get_path(selected) <
219 _event_list_store->get_path(last_selected) )
220 {
221 _event_log->blockNotifications();
223 while ( selected != last_selected ) {
225 sp_document_undo(_document);
227 if ( last_selected->parent() &&
228 last_selected == last_selected->parent()->children().begin() )
229 {
230 last_selected = last_selected->parent();
231 _event_log->setCurrEventParent((EventLog::iterator)NULL);
232 } else {
233 --last_selected;
234 if ( !last_selected->children().empty() ) {
235 _event_log->setCurrEventParent(last_selected);
236 last_selected = last_selected->children().end();
237 --last_selected;
238 }
239 }
240 }
241 _event_log->blockNotifications(false);
242 _event_log->updateUndoVerbs();
244 } else { // An event after the current one has been selected. Redo to the selected event.
246 _event_log->blockNotifications();
248 while ( selected != last_selected ) {
250 sp_document_redo(_document);
252 if ( !last_selected->children().empty() ) {
253 _event_log->setCurrEventParent(last_selected);
254 last_selected = last_selected->children().begin();
255 } else {
256 ++last_selected;
257 if ( last_selected->parent() &&
258 last_selected == last_selected->parent()->children().end() )
259 {
260 last_selected = last_selected->parent();
261 ++last_selected;
262 _event_log->setCurrEventParent((EventLog::iterator)NULL);
263 }
264 }
265 }
266 _event_log->blockNotifications(false);
268 }
270 _event_log->setCurrEvent(selected);
271 _event_log->updateUndoVerbs();
272 }
274 }
276 void
277 UndoHistory::_onExpandEvent(const Gtk::TreeModel::iterator &iter, const Gtk::TreeModel::Path &path)
278 {
279 if ( iter == _event_list_selection->get_selected() )
280 {
281 _event_list_selection->select(_event_log->getCurrEvent());
282 }
283 }
285 void
286 UndoHistory::_onCollapseEvent(const Gtk::TreeModel::iterator &iter, const Gtk::TreeModel::Path &path)
287 {
288 // Collapsing a branch we're currently in is equal to stepping to the last event in that branch
289 if ( iter == _event_log->getCurrEvent() )
290 {
291 EventLog::const_iterator curr_event_parent = _event_log->getCurrEvent();
292 EventLog::const_iterator curr_event = curr_event_parent->children().begin();
293 EventLog::const_iterator last = curr_event_parent->children().end();
295 _event_log->blockNotifications();
296 sp_document_redo(_document);
298 for ( --last ; curr_event != last ; ++curr_event ) {
299 sp_document_redo(_document);
300 }
301 _event_log->blockNotifications(false);
303 _event_log->setCurrEvent(curr_event);
304 _event_log->setCurrEventParent(curr_event_parent);
305 _event_list_selection->select(curr_event_parent);
306 }
307 }
309 const CellRendererInt::Filter& UndoHistory::greater_than_1 = UndoHistory::GreaterThan(1);
311 } // namespace Dialog
312 } // namespace UI
313 } // namespace Inkscape
315 /*
316 Local Variables:
317 mode:c++
318 c-file-style:"stroustrup"
319 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
320 indent-tabs-mode:nil
321 fill-column:99
322 End:
323 */
324 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :