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/*
* Copyright (C) 2022 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2022 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-plugin-fw
* Created on: 16 дек. 2022 г.
*
* lsp-plugin-fw is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-plugin-fw 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-plugin-fw. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_CTL_AUDIOFILEPREVIEW_H_
#define PRIVATE_CTL_AUDIOFILEPREVIEW_H_
#include <lsp-plug.in/plug-fw/ctl.h>
namespace lsp
{
namespace ctl
{
/** Audio file preview controller.
* This class can be used as a controller around functions responsible for audio file preview and playback.
*/
class AudioFilePreview: public ctl::Align, public ui::IPlayListener
{
public:
static const ctl_class_t metadata;
protected:
enum play_state_t
{
PS_STOP,
PS_PLAY,
PS_PAUSE
};
protected:
tk::Registry vWidgets;
ctl::Registry vControllers;
tk::Align sRoot; // Root widget
io::Path sFile; // File for the playback
wssize_t nPlayPosition; // Play position
wssize_t nFileLength; // File length
play_state_t enState; // Play state
protected:
void do_destroy();
void set_raw(const char *id, const char *fmt...);
void set_localized(const char *id, const char *key, const expr::Parameters *params = NULL);
void on_play_pause_submitted();
void on_stop_submitted();
void on_play_position_changed();
tk::handler_id_t bind_slot(const char *id, tk::slot_t slot, tk::event_handler_t handler);
wsize_t compute_valid_play_position(wssize_t position);
void change_state(play_state_t state);
void set_play_position(wssize_t position, wssize_t length);
void update_play_button(play_state_t new_state);
protected:
static status_t slot_play_pause_submit(tk::Widget *sender, void *ptr, void *data);
static status_t slot_stop_submit(tk::Widget *sender, void *ptr, void *data);
static status_t slot_play_position_change(tk::Widget *sender, void *ptr, void *data);
public:
explicit AudioFilePreview(ui::IWrapper *src);
virtual ~AudioFilePreview() override;
virtual status_t init() override;
virtual void destroy() override;
public:
virtual void play_position_update(wssize_t position, wssize_t length) override;
public:
/**
* Do the actions before the file dialog becomes visible
*/
void activate();
/**
* Do the actions after the file dialog becomes invisible
*/
void deactivate();
/**
* Select the specific file for playback
* @param file file to select
*/
void select_file(const char *file);
void select_file(const LSPString *file);
void select_file(const io::Path *file);
/**
* Unselect currently selected file
*/
void unselect_file();
};
} /* namespace ctl */
} /* namespace lsp */
#endif /* PRIVATE_CTL_AUDIOFILEPREVIEW_H_ */
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