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-rw-r--r--src/gui/BreadCrumbs.cpp213
1 files changed, 213 insertions, 0 deletions
diff --git a/src/gui/BreadCrumbs.cpp b/src/gui/BreadCrumbs.cpp
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+++ b/src/gui/BreadCrumbs.cpp
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+/* This file is part of Ingen.
+ * Copyright (C) 2007-2009 Dave Robillard <http://drobilla.net>
+ *
+ * Ingen is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "BreadCrumbs.hpp"
+#include "BreadCrumb.hpp"
+#include "App.hpp"
+#include "client/SigClientInterface.hpp"
+
+namespace Ingen {
+namespace GUI {
+
+using namespace std;
+using namespace Raul;
+
+BreadCrumbBox::BreadCrumbBox()
+ : Gtk::HBox()
+ , _active_path("/")
+ , _full_path("/")
+ , _enable_signal(true)
+{
+ App::instance().client()->signal_object_deleted.connect(
+ sigc::mem_fun(this, &BreadCrumbBox::object_destroyed));
+}
+
+
+SharedPtr<PatchView>
+BreadCrumbBox::view(const Path& path)
+{
+ for (std::list<BreadCrumb*>::const_iterator i = _breadcrumbs.begin(); i != _breadcrumbs.end(); ++i)
+ if ((*i)->path() == path)
+ return (*i)->view();
+
+ return SharedPtr<PatchView>();
+}
+
+
+/** Sets up the crumbs to display @a path.
+ *
+ * If @a path is already part of the shown path, it will be selected and the
+ * children preserved.
+ */
+void
+BreadCrumbBox::build(Path path, SharedPtr<PatchView> view)
+{
+ bool old_enable_signal = _enable_signal;
+ _enable_signal = false;
+
+ // Moving to a path we already contain, just switch the active button
+ if (_breadcrumbs.size() > 0 && (path.is_parent_of(_full_path) || path == _full_path)) {
+
+ for (std::list<BreadCrumb*>::iterator i = _breadcrumbs.begin(); i != _breadcrumbs.end(); ++i) {
+ if ((*i)->path() == path) {
+ (*i)->set_active(true);
+ if (!(*i)->view())
+ (*i)->set_view(view);
+
+ // views are expensive, having two around for the same patch is a bug
+ assert((*i)->view() == view);
+
+ } else {
+ (*i)->set_active(false);
+ }
+ }
+
+ _active_path = path;
+ _enable_signal = old_enable_signal;
+
+
+ // Moving to a child of the full path, just append crumbs (preserve view cache)
+ } else if (_breadcrumbs.size() > 0 && (path.is_child_of(_full_path))) {
+
+ string suffix = path.substr(_full_path.length());
+ while (suffix.length() > 0) {
+ if (suffix[0] == '/')
+ suffix = suffix.substr(1);
+ const string name = suffix.substr(0, suffix.find("/"));
+ _full_path = _full_path.base() + name;
+ BreadCrumb* but = create_crumb(_full_path, view);
+ pack_start(*but, false, false, 1);
+ _breadcrumbs.push_back(but);
+ but->show();
+ if (suffix.find("/") == string::npos)
+ break;
+ else
+ suffix = suffix.substr(suffix.find("/")+1);
+ }
+
+ for (std::list<BreadCrumb*>::iterator i = _breadcrumbs.begin(); i != _breadcrumbs.end(); ++i)
+ (*i)->set_active(false);
+ _breadcrumbs.back()->set_active(true);
+
+
+ // Rebuild from scratch
+ // Getting here is bad unless absolutely necessary, since the PatchView cache is lost
+ } else {
+
+ _full_path = path;
+ _active_path = path;
+
+ // Empty existing breadcrumbs
+ for (std::list<BreadCrumb*>::iterator i = _breadcrumbs.begin(); i != _breadcrumbs.end(); ++i)
+ remove(**i);
+ _breadcrumbs.clear();
+
+ // Add root
+ BreadCrumb* root_but = create_crumb("/", view);
+ pack_start(*root_but, false, false, 1);
+ _breadcrumbs.push_front(root_but);
+ root_but->set_active(root_but->path() == _active_path);
+
+ Path working_path = "/";
+ string suffix = path.chop_scheme().substr(1);
+ while (suffix.length() > 0) {
+ if (suffix[0] == '/')
+ suffix = suffix.substr(1);
+ const string name = suffix.substr(0, suffix.find("/"));
+ working_path = working_path.base() + name;
+ BreadCrumb* but = create_crumb(working_path, view);
+ pack_start(*but, false, false, 1);
+ _breadcrumbs.push_back(but);
+ but->set_active(working_path == _active_path);
+ but->show();
+ if (suffix.find("/") == string::npos)
+ break;
+ else
+ suffix = suffix.substr(suffix.find("/")+1);
+ }
+ }
+
+ _enable_signal = old_enable_signal;
+}
+
+
+/** Create a new crumb, assigning it a reference to @a view if their paths
+ * match, otherwise ignoring @a view.
+ */
+BreadCrumb*
+BreadCrumbBox::create_crumb(const Path& path,
+ SharedPtr<PatchView> view)
+{
+ BreadCrumb* but = manage(new BreadCrumb(path,
+ (view && path == view->patch()->path()) ? view : SharedPtr<PatchView>()));
+
+ but->signal_toggled().connect(sigc::bind(sigc::mem_fun(
+ this, &BreadCrumbBox::breadcrumb_clicked), but));
+
+ return but;
+}
+
+
+void
+BreadCrumbBox::breadcrumb_clicked(BreadCrumb* crumb)
+{
+ if (_enable_signal) {
+ _enable_signal = false;
+
+ if (!crumb->get_active()) {
+ // Tried to turn off the current active button, bad user, no cookie
+ crumb->set_active(true);
+ } else {
+ signal_patch_selected.emit(crumb->path(), crumb->view());
+ if (crumb->path() != _active_path)
+ crumb->set_active(false);
+ }
+ _enable_signal = true;
+ }
+}
+
+
+void
+BreadCrumbBox::object_destroyed(const Path& path)
+{
+ for (std::list<BreadCrumb*>::iterator i = _breadcrumbs.begin(); i != _breadcrumbs.end(); ++i) {
+ if ((*i)->path() == path) {
+ // Remove all crumbs after the removed one (inclusive)
+ for (std::list<BreadCrumb*>::iterator j = i; j != _breadcrumbs.end(); ) {
+ BreadCrumb* bc = *j;
+ j = _breadcrumbs.erase(j);
+ remove(*bc);
+ }
+ break;
+ }
+ }
+}
+
+
+void
+BreadCrumbBox::object_moved(const Path& old_path, const Path& new_path)
+{
+ for (std::list<BreadCrumb*>::iterator i = _breadcrumbs.begin(); i != _breadcrumbs.end(); ++i) {
+ if ((*i)->path() == old_path)
+ (*i)->set_path(new_path);
+ }
+}
+
+
+} // namespace GUI
+} // namespace Ingen
+