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livetrax/gtk2_ardour/luawindow.cc

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/*
Copyright (C) 2016 Robin Gareus <robin@gareus.org>
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.
*/
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#ifdef PLATFORM_WINDOWS
#define random() rand()
#endif
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#ifdef WAF_BUILD
#include "gtk2ardour-config.h"
#endif
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#include <glibmm/fileutils.h>
#include <gtkmm/messagedialog.h>
#include "pbd/basename.h"
#include "pbd/file_utils.h"
#include "pbd/md5.h"
#include "gtkmm2ext/gtk_ui.h"
#include "gtkmm2ext/utils.h"
#include "gtkmm2ext/window_title.h"
#include "ardour/luabindings.h"
#include "LuaBridge/LuaBridge.h"
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#include "ardour_ui.h"
#include "gui_thread.h"
#include "luainstance.h"
#include "luawindow.h"
#include "public_editor.h"
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#include "tooltips.h"
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#include "utils.h"
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#include "utils_videotl.h"
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#include "i18n.h"
using namespace ARDOUR;
using namespace ARDOUR_UI_UTILS;
using namespace PBD;
using namespace Gtk;
using namespace Glib;
using namespace Gtkmm2ext;
using namespace std;
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inline LuaWindow::BufferFlags operator| (const LuaWindow::BufferFlags& a, const LuaWindow::BufferFlags& b) {
return static_cast<LuaWindow::BufferFlags> (static_cast <int>(a) | static_cast<int> (b));
}
inline LuaWindow::BufferFlags operator|= (LuaWindow::BufferFlags& a, const LuaWindow::BufferFlags& b) {
return a = static_cast<LuaWindow::BufferFlags> (static_cast <int>(a) | static_cast<int> (b));
}
inline LuaWindow::BufferFlags operator&= (LuaWindow::BufferFlags& a, const LuaWindow::BufferFlags& b) {
return a = static_cast<LuaWindow::BufferFlags> (static_cast <int>(a) & static_cast<int> (b));
}
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LuaWindow* LuaWindow::_instance = 0;
LuaWindow*
LuaWindow::instance ()
{
if (!_instance) {
_instance = new LuaWindow;
}
return _instance;
}
LuaWindow::LuaWindow ()
: Window (Gtk::WINDOW_TOPLEVEL)
, VisibilityTracker (*((Gtk::Window*) this))
, lua (0)
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, _visible (false)
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, _menu_scratch (0)
, _menu_snippet (0)
, _menu_actions (0)
, _btn_run (_("Run"))
, _btn_clear (_("Clear Outtput"))
, _btn_open (_("Import"))
, _btn_save (_("Save"))
, _btn_delete (_("Delete"))
, _btn_revert (_("Revert"))
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, _current_buffer ()
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{
set_name ("Lua");
reinit_lua ();
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update_title ();
set_wmclass (X_("ardour_mixer"), PROGRAM_NAME);
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script_select.disable_scrolling ();
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set_border_width (0);
outtext.set_editable (false);
outtext.set_wrap_mode (Gtk::WRAP_WORD);
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outtext.set_cursor_visible (false);
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signal_delete_event().connect (sigc::mem_fun (*this, &LuaWindow::hide_window));
signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
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_btn_run.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::run_script));
_btn_clear.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::clear_output));
_btn_open.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::import_script));
_btn_save.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::save_script));
_btn_delete.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::delete_script));
_btn_revert.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::revert_script));
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_btn_open.set_sensitive (false); // TODO
_btn_save.set_sensitive (false);
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_btn_delete.set_sensitive (false);
_btn_revert.set_sensitive (false);
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// layout
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Gtk::ScrolledWindow *scrollin = manage (new Gtk::ScrolledWindow);
scrollin->set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
scrollin->add (entry);
scrollout.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_ALWAYS);
scrollout.add (outtext);
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entry.set_name ("ArdourLuaEntry");
outtext.set_name ("ArdourLuaEntry");
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Gtk::HBox *hbox = manage (new HBox());
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hbox->pack_start (_btn_run, false, false, 2);
hbox->pack_start (_btn_clear, false, false, 2);
hbox->pack_start (_btn_open, false, false, 2);
hbox->pack_start (_btn_save, false, false, 2);
hbox->pack_start (_btn_delete, false, false, 2);
hbox->pack_start (_btn_revert, false, false, 2);
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hbox->pack_start (script_select, false, false, 2);
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Gtk::VBox *vbox = manage (new VBox());
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vbox->pack_start (*scrollin, true, true, 0);
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vbox->pack_start (*hbox, false, false, 2);
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Gtk::VPaned *vpane = manage (new Gtk::VPaned ());
vpane->pack1 (*vbox, true, false);
vpane->pack2 (scrollout, false, true);
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vpane->show_all ();
add (*vpane);
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set_size_request (640, 480); // XXX
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ARDOUR_UI_UTILS::set_tooltip (script_select, _("Select Editor Buffer"));
setup_buffers ();
LuaScripting::instance().scripts_changed.connect (*this, invalidator (*this), boost::bind (&LuaWindow::refresh_scriptlist, this), gui_context());
Glib::RefPtr<Gtk::TextBuffer> tb (entry.get_buffer());
_script_changed_connection = tb->signal_changed().connect (sigc::mem_fun(*this, &LuaWindow::script_changed));
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}
LuaWindow::~LuaWindow ()
{
delete lua;
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}
void
LuaWindow::show_window ()
{
present();
_visible = true;
}
bool
LuaWindow::hide_window (GdkEventAny *ev)
{
if (!_visible) return 0;
_visible = false;
return just_hide_it (ev, static_cast<Gtk::Window *>(this));
}
void LuaWindow::reinit_lua ()
{
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ENSURE_GUI_THREAD (*this, &LuaWindow::session_going_away);
delete lua;
lua = new LuaState();
lua->Print.connect (sigc::mem_fun (*this, &LuaWindow::append_text));
lua_State* L = lua->getState();
LuaInstance::register_classes (L);
luabridge::push <PublicEditor *> (L, &PublicEditor::instance());
lua_setglobal (L, "Editor");
}
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void LuaWindow::set_session (Session* s)
{
SessionHandlePtr::set_session (s);
if (!_session) {
return;
}
update_title ();
_session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&LuaWindow::update_title, this), gui_context());
lua_State* L = lua->getState();
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LuaBindings::set_session (L, _session);
}
void
LuaWindow::session_going_away ()
{
ENSURE_GUI_THREAD (*this, &LuaWindow::session_going_away);
reinit_lua (); // drop state (all variables, session references)
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SessionHandlePtr::session_going_away ();
_session = 0;
update_title ();
lua_State* L = lua->getState();
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LuaBindings::set_session (L, _session);
}
void
LuaWindow::update_title ()
{
if (_session) {
string n;
if (_session->snap_name() != _session->name()) {
n = _session->snap_name ();
} else {
n = _session->name ();
}
if (_session->dirty ()) {
n = "*" + n;
}
WindowTitle title (n);
title += S_("Window|Lua");
title += Glib::get_application_name ();
set_title (title.get_string());
} else {
WindowTitle title (S_("Window|Lua"));
title += Glib::get_application_name ();
set_title (title.get_string());
}
}
void
LuaWindow::scroll_to_bottom ()
{
Gtk::Adjustment *adj;
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adj = scrollout.get_vadjustment();
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adj->set_value (MAX(0,(adj->get_upper() - adj->get_page_size())));
}
void
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LuaWindow::run_script ()
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{
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Glib::RefPtr<Gtk::TextBuffer> tb (entry.get_buffer());
std::string script = tb->get_text();
const std::string& bytecode = LuaScripting::get_factory_bytecode (script);
if (bytecode.empty()) {
// plain script or faulty script -- run directly
try {
lua->do_command ("function ardour () end");
if (0 == lua->do_command (script)) {
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append_text ("> OK");
}
} catch (luabridge::LuaException const& e) {
append_text (string_compose (_("LuaException: %1"), e.what()));
}
} else {
// script with factory method
try {
lua_State* L = lua->getState();
lua->do_command ("function ardour () end");
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LuaScriptParamList args = LuaScriptParams::script_params (script, "action_param", false);
luabridge::LuaRef tbl_arg (luabridge::newTable(L));
LuaScriptParams::params_to_ref (&tbl_arg, args);
lua->do_command (script); // register "factory"
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luabridge::LuaRef lua_factory = luabridge::getGlobal (L, "factory");
if (lua_factory.isFunction()) {
lua_factory(tbl_arg)();
}
lua->do_command ("factory = nil;");
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} catch (luabridge::LuaException const& e) {
append_text (string_compose (_("LuaException: %1"), e.what()));
}
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}
}
void
LuaWindow::append_text (std::string s)
{
Glib::RefPtr<Gtk::TextBuffer> tb (outtext.get_buffer());
tb->insert (tb->end(), s + "\n");
scroll_to_bottom ();
}
void
LuaWindow::clear_output ()
{
Glib::RefPtr<Gtk::TextBuffer> tb (outtext.get_buffer());
tb->set_text ("");
}
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void
LuaWindow::new_script ()
{
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char buf[32];
snprintf (buf, sizeof (buf), "#%d", count_scratch_buffers () + 1);
script_buffers.push_back (ScriptBufferPtr (new LuaWindow::ScriptBuffer (buf)));
script_selection_changed (script_buffers.back ());
refresh_scriptlist ();
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}
void
LuaWindow::delete_script ()
{
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assert (_current_buffer->flags & Buffer_Scratch);
for (ScriptBufferList::iterator i = script_buffers.begin (); i != script_buffers.end (); ++i) {
if ((*i) == _current_buffer) {
script_buffers.erase (i);
break;
}
}
for (ScriptBufferList::const_iterator i = script_buffers.begin (); i != script_buffers.end (); ++i) {
if ((*i)->flags & Buffer_Scratch) {
script_selection_changed (*i);
return;
}
}
new_script ();
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}
void
LuaWindow::revert_script ()
{
_current_buffer->flags &= BufferFlags(~Buffer_Valid);
script_selection_changed (_current_buffer, true);
}
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void
LuaWindow::import_script ()
{
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// TODO: dialog to select file or enter URL
// TODO convert a few URL (eg. pastebin) to raw.
#if 0
char *url = "http://pastebin.com/raw/3UMkZ6nV";
char *rv = a3_curl_http_get (url, 0);
if (rv) {
new_script ();
Glib::RefPtr<Gtk::TextBuffer> tb (entry.get_buffer());
tb->set_text (rv);
_current_buffer->flags &= BufferFlags(~Buffer_Dirty);
update_gui_state ();
}
free (rv);
#endif
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}
void
LuaWindow::save_script ()
{
Glib::RefPtr<Gtk::TextBuffer> tb (entry.get_buffer());
std::string script = tb->get_text();
std::string msg = "Unknown error";
std::string path;
LuaScriptInfoPtr lsi = LuaScripting::script_info (script);
ScriptBuffer & sb (*_current_buffer);
assert (sb.flags & Buffer_Dirty);
// 1) check if it has a valid header and factory
const std::string& bytecode = LuaScripting::get_factory_bytecode (script);
if (bytecode.empty()) {
msg = _("Missing script header.\nThe script requires an '{ardour}' info table and a 'factory' function.");
goto errorout;
}
if (!LuaScripting::try_compile (script, LuaScriptParams::script_params (script, "action_param", false))) {
msg = _("Script fails to compile.");
goto errorout;
}
// 2) check script name & type
lsi = LuaScripting::script_info (script);
if (!lsi) {
msg = _("Invalid or missing script-name or script-type.");
goto errorout;
}
if (lsi->type != LuaScriptInfo::Snippet && lsi->type != LuaScriptInfo::EditorAction) {
msg = _("Invalid script-type.\nValid types are 'EditorAction' and 'Snippet'.");
goto errorout;
}
// 3) if there's already a writable file,...
if ((sb.flags & Buffer_HasFile) && !(sb.flags & Buffer_ReadOnly)) {
try {
Glib::file_set_contents (sb.path, script);
sb.flags &= BufferFlags(~Buffer_Dirty);
update_gui_state (); // XXX here?
append_text (X_("> ") + string_compose (_("Saved as %1"), sb.path));
return; // OK
} catch (Glib::FileError e) {
msg = string_compose (_("Error saving file: %1"), e.what());
goto errorout;
}
}
// 4) check if the name is unique for the given type; locally at least
if (true /*sb.flags & Buffer_HasFile*/) {
LuaScriptList& lsl (LuaScripting::instance ().scripts (lsi->type));
for (LuaScriptList::const_iterator s = lsl.begin(); s != lsl.end(); ++s) {
if ((*s)->name == lsi->name) {
msg = string_compose (_("Script with given name '%1' already exists.\nUse a different name in the descriptor."), lsi->name);
goto errorout;
}
}
}
// 5) construct filename -- TODO ask user for name, ask to replace file.
do {
char buf[80];
time_t t = time(0);
struct tm * timeinfo = localtime (&t);
strftime (buf, sizeof(buf), "%s%d", timeinfo);
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sprintf (buf, "%s%ld", buf, random ()); // is this valid?
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MD5 md5;
std::string fn = md5.digestString (buf);
switch (lsi->type) {
case LuaScriptInfo::EditorAction:
fn = "a_" + fn;
break;
case LuaScriptInfo::Snippet:
fn = "s_" + fn;
break;
default:
break;
}
path = Glib::build_filename (LuaScripting::user_script_dir (), fn.substr(0, 11) + ".lua");
} while (Glib::file_test (path, Glib::FILE_TEST_EXISTS));
try {
Glib::file_set_contents (path, script);
sb.path = path;
sb.flags |= Buffer_HasFile;
sb.flags &= BufferFlags(~Buffer_Dirty);
update_gui_state (); // XXX here?
LuaScripting::instance().refresh (true);
append_text (X_("> ") + string_compose (_("Saved as %1"), path));
return; // OK
} catch (Glib::FileError e) {
msg = string_compose (_("Error saving file: %1"), e.what());
goto errorout;
}
errorout:
MessageDialog am (msg);
am.run ();
}
void
LuaWindow::setup_buffers ()
{
if (script_buffers.size() > 0) {
return;
}
script_buffers.push_back (ScriptBufferPtr (new LuaWindow::ScriptBuffer("#1")));
_current_buffer = script_buffers.front();
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Glib::RefPtr<Gtk::TextBuffer> tb (entry.get_buffer());
tb->set_text (_current_buffer->script);
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refresh_scriptlist ();
update_gui_state ();
}
uint32_t
LuaWindow::count_scratch_buffers () const
{
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uint32_t n = 0;
for (ScriptBufferList::const_iterator i = script_buffers.begin (); i != script_buffers.end (); ++i) {
if ((*i)->flags & Buffer_Scratch) {
++n;
}
}
return n;
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}
void
LuaWindow::refresh_scriptlist ()
{
for (ScriptBufferList::iterator i = script_buffers.begin (); i != script_buffers.end ();) {
if ((*i)->flags & Buffer_Scratch) {
++i;
continue;
}
i = script_buffers.erase (i);
}
LuaScriptList& lsa (LuaScripting::instance ().scripts (LuaScriptInfo::EditorAction));
for (LuaScriptList::const_iterator s = lsa.begin(); s != lsa.end(); ++s) {
script_buffers.push_back (ScriptBufferPtr ( new LuaWindow::ScriptBuffer(*s)));
}
LuaScriptList& lss (LuaScripting::instance ().scripts (LuaScriptInfo::Snippet));
for (LuaScriptList::const_iterator s = lss.begin(); s != lss.end(); ++s) {
script_buffers.push_back (ScriptBufferPtr ( new LuaWindow::ScriptBuffer(*s)));
}
rebuild_menu ();
}
void
LuaWindow::rebuild_menu ()
{
using namespace Menu_Helpers;
_menu_scratch = manage (new Menu);
_menu_snippet = manage (new Menu);
_menu_actions = manage (new Menu);
MenuList& items_scratch (_menu_scratch->items());
MenuList& items_snippet (_menu_snippet->items());
MenuList& items_actions (_menu_actions->items());
{
Menu_Helpers::MenuElem elem = Gtk::Menu_Helpers::MenuElem(_("New"),
sigc::mem_fun(*this, &LuaWindow::new_script));
items_scratch.push_back(elem);
}
for (ScriptBufferList::const_iterator i = script_buffers.begin (); i != script_buffers.end (); ++i) {
Menu_Helpers::MenuElem elem = Gtk::Menu_Helpers::MenuElem((*i)->name,
sigc::bind(sigc::mem_fun(*this, &LuaWindow::script_selection_changed), (*i), false));
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if ((*i)->flags & Buffer_Scratch) {
items_scratch.push_back(elem);
}
else if ((*i)->type == LuaScriptInfo::EditorAction) {
items_actions.push_back(elem);
}
else if ((*i)->type == LuaScriptInfo::Snippet) {
items_snippet.push_back(elem);
}
}
script_select.clear_items ();
script_select.AddMenuElem (Menu_Helpers::MenuElem ("Scratch", *_menu_scratch));
script_select.AddMenuElem (Menu_Helpers::MenuElem ("Snippets", *_menu_snippet));
script_select.AddMenuElem (Menu_Helpers::MenuElem ("Actions", *_menu_actions));
}
void
LuaWindow::script_selection_changed (ScriptBufferPtr n, bool force)
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{
if (n == _current_buffer && !force) {
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return;
}
Glib::RefPtr<Gtk::TextBuffer> tb (entry.get_buffer());
if ((n->flags & Buffer_Valid)) {
_current_buffer->script = tb->get_text();
}
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if (!(n->flags & Buffer_Valid)) {
if (!n->load()) {
append_text ("! Failed to load buffer.");
}
}
if (n->flags & Buffer_Valid) {
_current_buffer = n;
_script_changed_connection.block ();
tb->set_text (n->script);
_script_changed_connection.unblock ();
} else {
append_text ("! Failed to switch buffer.");
}
update_gui_state ();
}
void
LuaWindow::update_gui_state ()
{
const ScriptBuffer & sb (*_current_buffer);
std::string name;
if (sb.flags & Buffer_Scratch) {
name = string_compose (_("Scratch Buffer %1"), sb.name);
} else if (sb.type == LuaScriptInfo::EditorAction) {
name = string_compose (_("Action: '%1'"), sb.name);
} else if (sb.type == LuaScriptInfo::Snippet) {
name = string_compose (_("Snippet: %1"), sb.name);
} else {
cerr << "Invalid Script type\n";
assert (0);
return;
}
if (sb.flags & Buffer_Dirty) {
name += " *";
}
script_select.set_text(name);
_btn_save.set_sensitive (sb.flags & Buffer_Dirty);
_btn_delete.set_sensitive (sb.flags & Buffer_Scratch); // TODO allow to remove user-scripts
_btn_revert.set_sensitive ((sb.flags & Buffer_Dirty) && (sb.flags & Buffer_HasFile));
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}
void
LuaWindow::script_changed () {
if (_current_buffer->flags & Buffer_Dirty) {
return;
}
_current_buffer->flags |= Buffer_Dirty;
update_gui_state ();
}
LuaWindow::ScriptBuffer::ScriptBuffer (const std::string& n)
: name (n)
, flags (Buffer_Scratch | Buffer_Valid)
{
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script =
"-- ardour { [\"type\"] = \"Snippet\", name = \"\" }\n"
"-- function factory () return function () -- -- end end\n";
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}
LuaWindow::ScriptBuffer::ScriptBuffer (LuaScriptInfoPtr p)
: name (p->name)
, path (p->path)
, flags (Buffer_HasFile)
, type (p->type)
{
if (!PBD::exists_and_writable (path)) {
flags |= Buffer_ReadOnly;
}
}
#if 0
LuaWindow::ScriptBuffer::ScriptBuffer (const ScriptBuffer& other)
: script (other.script)
, name (other.name)
, path (other.path)
, flags (other.flags)
, type (other.type)
{
}
#endif
LuaWindow::ScriptBuffer::~ScriptBuffer ()
{
}
bool
LuaWindow::ScriptBuffer::load ()
{
if (!(flags & Buffer_HasFile)) return false;
if (flags & Buffer_Valid) return true;
try {
script = Glib::file_get_contents (path);
flags |= Buffer_Valid;
} catch (Glib::FileError e) {
return false;
}
return true;
}