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livetrax/libs/gtkmm2ext/tabbable.cc
Paul Davis 434ef34229 add tab-closing buttons to tabs.
Images are non-scalable, too big and ugly. Next commit ...
2016-02-22 15:31:22 -05:00

288 lines
5.8 KiB
C++

/*
Copyright (C) 2015 Paul Davis
This program 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.
This program 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 more 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <gtkmm/action.h>
#include <gtkmm/notebook.h>
#include <gtkmm/window.h>
#include <gtkmm/stock.h>
#include "gtkmm2ext/tabbable.h"
#include "gtkmm2ext/gtk_ui.h"
#include "gtkmm2ext/visibility_tracker.h"
#include "i18n.h"
using namespace Gtkmm2ext;
using namespace Gtk;
using std::string;
Tabbable::Tabbable (Widget& w, const string& name)
: WindowProxy (name)
, _contents (w)
, tab_close_image (Stock::CLOSE, ICON_SIZE_BUTTON)
{
_tab_box.pack_start (_tab_label, true, true);
_tab_box.pack_start (_tab_close_button, false, false);
_tab_close_button.add (tab_close_image);
_tab_close_button.signal_clicked().connect (sigc::mem_fun (*this, &Tabbable::tab_close_clicked));
}
Tabbable::~Tabbable ()
{
if (_window) {
delete _window;
_window = 0;
}
}
void
Tabbable::tab_close_clicked ()
{
/* for this to happen, the tab must be visible so we
can assume that the contents are displayed in the
parent notebook
*/
if (_parent_notebook) {
_parent_notebook->remove_page (_contents);
}
}
void
Tabbable::add_to_notebook (Notebook& notebook, const string& tab_title)
{
_tab_label.set_text (tab_title);
_tab_box.show_all ();
notebook.append_page (_contents, _tab_box);
Gtkmm2ext::UI::instance()->set_tip (_tab_label,
string_compose (_("Drag this tab to the desktop to show %1 in its own window\n\n"
"To put the window back, click on its \"close\" button"), tab_title));
notebook.set_tab_detachable (_contents);
notebook.set_tab_reorderable (_contents);
_parent_notebook = &notebook;
_tab_title = tab_title;
}
Window*
Tabbable::use_own_window (bool and_pack_it)
{
Gtk::Window* win = get (true);
if (and_pack_it) {
Gtk::Container* parent = _contents.get_parent();
if (parent) {
parent->remove (_contents);
}
_own_notebook.append_page (_contents, _tab_box);
}
return win;
}
bool
Tabbable::window_visible ()
{
if (!own_window()) {
return false;
}
return visible();
}
Window*
Tabbable::get (bool create)
{
if (_window) {
return _window;
}
if (!create) {
return 0;
}
/* From here on, we're creating the window
*/
if ((_window = new Window (WINDOW_TOPLEVEL)) == 0) {
return 0;
}
_window->add (_own_notebook);
_own_notebook.show ();
_own_notebook.set_show_tabs (false);
/* do other window-related setup */
setup ();
/* window should be ready for derived classes to do something with it */
return _window;
}
Gtk::Notebook*
Tabbable::tab_root_drop ()
{
Gtk::Allocation alloc;
alloc = _contents.get_parent()->get_allocation();
(void) use_own_window (false);
/* This is called after a drop of a tab onto the root window. Its
* responsibility is to return the notebook that this Tabbable's
* contents should be packed into before the drop handling is
* completed. It is not responsible for actually taking care of this
* packing.
*/
_window->set_default_size (alloc.get_width(), alloc.get_height());
_window->show_all ();
_window->present ();
return &_own_notebook;
}
void
Tabbable::show_window ()
{
make_visible ();
if (_window && (current_toplevel() == _window)) {
if (!_visible) { /* was hidden, update status */
set_pos_and_size ();
}
}
}
bool
Tabbable::delete_event_handler (GdkEventAny *ev)
{
Window* toplevel = dynamic_cast<Window*> (_contents.get_toplevel());
if (_window == toplevel) {
/* unpack Tabbable from parent, put it back in the main tabbed
* notebook
*/
save_pos_and_size ();
_contents.get_parent()->remove (_contents);
/* leave the window around */
_window->hide ();
if (_parent_notebook) {
_parent_notebook->append_page (_contents, _tab_box);
_parent_notebook->set_tab_detachable (_contents);
_parent_notebook->set_tab_reorderable (_contents);
_parent_notebook->set_current_page (_parent_notebook->page_num (_contents));
}
/* don't let anything else handle this */
return true;
}
/* nothing to do */
return false;
}
bool
Tabbable::is_tabbed () const
{
Window* toplevel = (Window*) _contents.get_toplevel();
if (_window && (toplevel == _window)) {
return false;
}
if (_parent_notebook && _contents.get_parent()) {
return true;
}
return false;
}
void
Tabbable::show_tab ()
{
if (!window_visible() && _parent_notebook) {
if (_contents.get_parent() == 0) {
add_to_notebook (*_parent_notebook, _tab_title);
}
_parent_notebook->set_current_page (_parent_notebook->page_num (_contents));
}
}
Gtk::Window*
Tabbable::current_toplevel () const
{
return dynamic_cast<Gtk::Window*> (contents().get_toplevel());
}
string
Tabbable::xml_node_name()
{
return WindowProxy::xml_node_name();
}
XMLNode&
Tabbable::get_state()
{
XMLNode& node (WindowProxy::get_state());
return node;
}
int
Tabbable::set_state (const XMLNode& node, int version)
{
int ret;
if ((ret = WindowProxy::set_state (node, version)) == 0) {
if (_visible) {
if (use_own_window (true) == 0) {
ret = -1;
}
}
}
return ret;
}
void
Tabbable::make_visible ()
{
if (_window && (current_toplevel() == _window)) {
_window->present ();
} else {
show_tab ();
}
}