patch_change.cc

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/*
    Copyright (C) 2000-2010 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 <iostream>

#include <boost/algorithm/string.hpp>

#include <glibmm/regex.h>

#include "gtkmm2ext/keyboard.h"
#include "gtkmm2ext/utils.h"

#include "midi++/midnam_patch.h"

#include "canvas/debug.h"

#include "ardour_ui.h"
#include "editor.h"
#include "editor_drag.h"
#include "midi_region_view.h"
#include "patch_change.h"

using namespace MIDI::Name;
using namespace std;
using Gtkmm2ext::Keyboard;

PatchChange::PatchChange(MidiRegionView&                   region,
                         ArdourCanvas::Container*          parent,
                         const string&                     text,
                         double                            height,
                         double                            x,
                         double                            y,
                         ARDOUR::InstrumentInfo&           info,
                         ARDOUR::MidiModel::PatchChangePtr patch)
        : _region (region)
        , _info (info)
        , _patch (patch)
        , _popup_initialized(false)
{
        _flag = new ArdourCanvas::Flag (
                parent,
                height,
                ARDOUR_UI::config()->color ("midi patch change outline"),
                ARDOUR_UI::config()->color_mod ("midi patch change fill", "midi patch change fill"),
                ArdourCanvas::Duple (x, y),
                true);
        
        CANVAS_DEBUG_NAME (_flag, text);

        _flag->Event.connect (sigc::mem_fun (*this, &PatchChange::event_handler));
        _flag->set_font_description (ARDOUR_UI::config()->get_SmallFont());
        _flag->set_text(text);
}

PatchChange::~PatchChange()
{
        delete _flag;
}

void
PatchChange::initialize_popup_menus()
{
        using namespace MIDI::Name;

        boost::shared_ptr<ChannelNameSet> channel_name_set = _info.get_patches (_patch->channel());

        if (!channel_name_set) {
                return;
        }

        const ChannelNameSet::PatchBanks& patch_banks = channel_name_set->patch_banks();

        if (patch_banks.size() > 1) {

                // fill popup menu:
                Gtk::Menu::MenuList& patch_bank_menus = _popup.items();

                for (ChannelNameSet::PatchBanks::const_iterator bank = patch_banks.begin();
                     bank != patch_banks.end();
                     ++bank) {
                        Glib::RefPtr<Glib::Regex> underscores = Glib::Regex::create("_");
                        std::string replacement(" ");
                        
                        Gtk::Menu& patch_bank_menu = *manage(new Gtk::Menu());
                        
                        const PatchNameList& patches = (*bank)->patch_name_list();
                        Gtk::Menu::MenuList& patch_menus = patch_bank_menu.items();
                
                        for (PatchNameList::const_iterator patch = patches.begin();
                             patch != patches.end();
                             ++patch) {
                                std::string name = underscores->replace((*patch)->name().c_str(), -1, 0, replacement);

                                patch_menus.push_back(
                                        Gtk::Menu_Helpers::MenuElem(
                                                name,
                                                sigc::bind(
                                                        sigc::mem_fun(*this, &PatchChange::on_patch_menu_selected),
                                                        (*patch)->patch_primary_key())) );
                        }


                        std::string name = underscores->replace((*bank)->name().c_str(), -1, 0, replacement);

                        patch_bank_menus.push_back(
                                Gtk::Menu_Helpers::MenuElem(
                                        name,
                                        patch_bank_menu) );
                }

        } else {
                /* only one patch bank, so make it the initial menu */

                const PatchNameList& patches = patch_banks.front()->patch_name_list();
                Gtk::Menu::MenuList& patch_menus = _popup.items();
                
                for (PatchNameList::const_iterator patch = patches.begin();
                     patch != patches.end();
                     ++patch) {
                        std::string name = (*patch)->name();
                        boost::replace_all (name, "_", " ");
                        
                        patch_menus.push_back (
                                Gtk::Menu_Helpers::MenuElem (
                                        name,
                                        sigc::bind (sigc::mem_fun(*this, &PatchChange::on_patch_menu_selected),
                                                    (*patch)->patch_primary_key())));
                }
        }
}

void
PatchChange::on_patch_menu_selected(const PatchPrimaryKey& key)
{
        _region.change_patch_change (*this, key);
}

bool
PatchChange::event_handler (GdkEvent* ev)
{
        /* XXX: icky dcast */
        Editor* e = dynamic_cast<Editor*> (&_region.get_time_axis_view().editor());
        
        if (!e->internal_editing()) {
                return false;
        }

        switch (ev->type) {
        case GDK_BUTTON_PRESS:
                if (e->current_mouse_mode() == Editing::MouseContent) {

                        if (Gtkmm2ext::Keyboard::is_delete_event (&ev->button)) {

                                _region.delete_patch_change (this);
                                return true;

                        } else if (Gtkmm2ext::Keyboard::is_edit_event (&ev->button)) {

                                _region.edit_patch_change (this);
                                return true;
                                
                        } else if (ev->button.button == 1) {
                                e->drags()->set (new PatchChangeDrag (e, this, &_region), ev);
                                return true;
                        }
                }

                if (ev->button.button == 3) {
                        if (!_popup_initialized) {
                                initialize_popup_menus();
                                _popup_initialized = true;
                        }
                        _popup.popup(ev->button.button, ev->button.time);
                        return true;
                }
                break;

        case GDK_KEY_PRESS:
                switch (ev->key.keyval) {
                case GDK_Up:
                case GDK_KP_Up:
                case GDK_uparrow:
                        _region.step_patch(
                                *this, Keyboard::modifier_state_contains(ev->key.state, Keyboard::TertiaryModifier), 1);
                        return true;
                case GDK_Down:
                case GDK_KP_Down:
                case GDK_downarrow:
                        _region.step_patch(
                                *this, Keyboard::modifier_state_contains(ev->key.state, Keyboard::TertiaryModifier), -1);
                        return true;
                default:
                        break;
                }
                break;

        case GDK_KEY_RELEASE:
                switch (ev->key.keyval) {
                case GDK_BackSpace:
                case GDK_Delete:
                        _region.delete_patch_change (this);
                default:
                        break;
                }
                break;

        case GDK_SCROLL:
                if (ev->scroll.direction == GDK_SCROLL_UP) {
                        _region.step_patch(
                                *this, Keyboard::modifier_state_contains(ev->scroll.state, Keyboard::TertiaryModifier), 1);
                        return true;
                } else if (ev->scroll.direction == GDK_SCROLL_DOWN) {
                        _region.step_patch(
                                *this, Keyboard::modifier_state_contains(ev->scroll.state, Keyboard::TertiaryModifier), -1);
                        return true;
                }
                break;

        case GDK_ENTER_NOTIFY:
                _region.patch_entered (this);
                break;

        case GDK_LEAVE_NOTIFY:
                _region.patch_left (this);
                break;

        default:
                break;
        }

        return false;
}

void
PatchChange::move (ArdourCanvas::Duple d)
{
        _flag->move (d);
}

void
PatchChange::set_height (ArdourCanvas::Distance height)
{
        _flag->set_height (height);
}

void
PatchChange::hide ()
{
        _flag->hide ();
}

void
PatchChange::show ()
{
        _flag->show ();
}