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livetrax/libs/gtkmm2ext/tabbable.cc

385 lines
7.0 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/utils.h"
#include "gtkmm2ext/visibility_tracker.h"
#include "pbd/stacktrace.h"
#include "i18n.h"
using namespace Gtkmm2ext;
using namespace Gtk;
using std::string;
Tabbable::Tabbable (Widget& w, const string& name)
: WindowProxy (name)
, _contents (w)
, _parent_notebook (0)
, tab_requested_by_state (true)
{
}
Tabbable::~Tabbable ()
{
if (_window) {
delete _window;
_window = 0;
}
}
void
Tabbable::add_to_notebook (Notebook& notebook, const string& tab_title)
{
_parent_notebook = &notebook;
if (tab_requested_by_state) {
attach ();
}
}
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);
}
return win;
}
bool
Tabbable::window_visible () const
{
if (!_window) {
return false;
}
return _window->is_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);
_window->signal_map().connect (sigc::mem_fun (*this, &Tabbable::window_mapped));
_window->signal_unmap().connect (sigc::mem_fun (*this, &Tabbable::window_unmapped));
/* do other window-related setup */
setup ();
/* window should be ready for derived classes to do something with it */
return _window;
}
void
Tabbable::show_own_window (bool and_pack_it)
{
Gtk::Widget* parent = _contents.get_parent();
Gtk::Allocation alloc;
if (parent) {
alloc = parent->get_allocation();
}
(void) use_own_window (and_pack_it);
if (parent) {
_window->set_default_size (alloc.get_width(), alloc.get_height());
}
tab_requested_by_state = false;
_window->present ();
}
Gtk::Notebook*
Tabbable::tab_root_drop ()
{
/* This is called after a drop of a tab onto the root window. Its
* responsibility xois 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.
*/
show_own_window (false);
return &_own_notebook;
}
void
Tabbable::show_window ()
{
make_visible ();
if (_window && (current_toplevel() == _window)) {
if (!_visible) { /* was hidden, update status */
set_pos_and_size ();
}
}
}
/** If this Tabbable is currently parented by a tab, ensure that the tab is the
* current one. If it is parented by a window, then toggle the visibility of
* that window.
*/
void
Tabbable::change_visibility ()
{
if (tabbed()) {
_parent_notebook->set_current_page (_parent_notebook->page_num (_contents));
return;
}
if (tab_requested_by_state) {
/* should be tabbed, but currently isn't parented by a notebook */
return;
}
if (_window && (current_toplevel() == _window)) {
/* Use WindowProxy method which will rotate then hide */
toggle();
}
}
void
Tabbable::make_visible ()
{
if (_window && (current_toplevel() == _window)) {
set_pos ();
_window->present ();
} else {
if (!tab_requested_by_state) {
show_own_window (true);
} else {
show_tab ();
}
}
}
void
Tabbable::make_invisible ()
{
if (_window && (current_toplevel() == _window)) {
_window->hide ();
} else {
hide_tab ();
}
}
void
Tabbable::detach ()
{
show_own_window (true);
}
void
Tabbable::attach ()
{
if (!_parent_notebook) {
return;
}
if (tabbed()) {
/* already tabbed */
return;
}
if (_window && current_toplevel() == _window) {
/* 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 ();
}
_parent_notebook->append_page (_contents);
_parent_notebook->set_tab_detachable (_contents);
_parent_notebook->set_tab_reorderable (_contents);
_parent_notebook->set_current_page (_parent_notebook->page_num (_contents));
/* have to force this on, which is semantically correct, since
* the user has effectively asked for it.
*/
tab_requested_by_state = true;
StateChange (*this);
}
bool
Tabbable::delete_event_handler (GdkEventAny *ev)
{
_window->hide();
return true;
}
bool
Tabbable::tabbed () const
{
if (_window && (current_toplevel() == _window)) {
return false;
}
if (_parent_notebook && (_parent_notebook->page_num (_contents) >= 0)) {
return true;
}
return false;
}
void
Tabbable::hide_tab ()
{
if (tabbed()) {
_parent_notebook->remove_page (_contents);
StateChange (*this);
}
}
void
Tabbable::show_tab ()
{
if (!window_visible() && _parent_notebook) {
if (_contents.get_parent() == 0) {
tab_requested_by_state = true;
add_to_notebook (*_parent_notebook, _tab_title);
}
_parent_notebook->set_current_page (_parent_notebook->page_num (_contents));
current_toplevel()->present ();
}
}
Gtk::Window*
Tabbable::current_toplevel () const
{
return dynamic_cast<Gtk::Window*> (contents().get_toplevel());
}
string
Tabbable::xml_node_name()
{
return WindowProxy::xml_node_name();
}
bool
Tabbable::tabbed_by_default() const
{
return tab_requested_by_state;
}
XMLNode&
Tabbable::get_state()
{
XMLNode& node (WindowProxy::get_state());
node.add_property (X_("tabbed"), tabbed() ? X_("yes") : X_("no"));
return node;
}
int
Tabbable::set_state (const XMLNode& node, int version)
{
int ret;
if ((ret = WindowProxy::set_state (node, version)) != 0) {
return ret;
}
if (_visible) {
show_own_window (true);
}
XMLNodeList children = node.children ();
XMLNode* window_node = node.child ("Window");
if (window_node) {
XMLProperty const * prop = window_node->property (X_("tabbed"));
if (prop) {
tab_requested_by_state = PBD::string_is_affirmative (prop->value());
}
}
if (!_visible) {
if (tab_requested_by_state) {
attach ();
} else {
/* this does nothing if not tabbed */
hide_tab ();
}
}
return ret;
}
void
Tabbable::window_mapped ()
{
StateChange (*this);
}
void
Tabbable::window_unmapped ()
{
StateChange (*this);
}