portapack-mayhem/firmware/application/ui_handwrite.hpp

/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
 *
 * This file is part of PortaPack.
 *
 * 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, 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; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __UNISTROKE_H__
#define __UNISTROKE_H__

#include "ui.hpp"
#include "ui_widget.hpp"
#include "ui_painter.hpp"
#include "ui_textentry.hpp"
#include "unistroke.hpp"

namespace ui {

class HandWriteView : public TextEntryView {
   public:
    HandWriteView(NavigationView& nav, std::string* str, size_t max_length);

    HandWriteView(const HandWriteView&) = delete;
    HandWriteView(HandWriteView&&) = delete;
    HandWriteView& operator=(const HandWriteView&) = delete;
    HandWriteView& operator=(HandWriteView&&) = delete;

    void paint(Painter& painter) override;
    void on_show() override;
    bool on_touch(const TouchEvent event) override;

   private:
    const char special_chars[5] = {'\'', '.', '?', '!', '='};

    const HandWriting* handwriting{};
    Painter* _painter{};
    uint8_t dir_cnt{0};
    uint8_t dir_prev{0};
    uint8_t flash_timer{0};
    bool tracing{false};
    uint8_t stroke_index{0};
    uint8_t sample_skip{0}, move_wait{0};
    uint8_t stroke_list[8];
    Point start_pos{}, current_pos{}, last_pos{};
    bool _lowercase = false;

    void sample_pen();
    void add_stroke(uint8_t dir);
    void guess_letter();
    void clear_zone(const Color color, const bool flash);
    void on_button(Button& button);

    std::array<Button, 10> num_buttons{};
    std::array<Button, 5> special_buttons{};

    Button button_case{
        {8, 270, 32, 28},
        "UC"};

    Button button_ok{
        {190, 270, 40, 28},
        "OK"};

    MessageHandlerRegistration message_handler_sample{
        Message::ID::DisplayFrameSync,
        [this](const Message* const) {
            this->sample_pen();
        }};
};

} /* namespace ui */

#endif /*__UNISTROKE_H__*/