portapack-mayhem/firmware/application/ui_menu.hpp
furrtek 84be3a363c Added categories for Frequency Manager
Very bad memory leak fix in MenuView
2017-02-03 15:10:27 +00:00

124 lines
2.7 KiB
C++

/*
* Copyright (C) 2014 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 __UI_MENU_H__
#define __UI_MENU_H__
#include "ui.hpp"
#include "ui_widget.hpp"
#include "ui_painter.hpp"
#include "bitmap.hpp"
#include "signal.hpp"
#include <cstddef>
#include <string>
#include <functional>
namespace ui {
struct MenuItem {
std::string text;
ui::Color color;
const Bitmap* bitmap;
std::function<void(void)> on_select;
// TODO: Prevent default-constructed MenuItems.
// I managed to construct a menu with three extra, unspecified menu items
// in the array that were default constructed...
};
class MenuItemView : public Widget {
public:
MenuItemView(
MenuItem item,
bool keep_highlight
) : item(item),
keep_highlight_ { keep_highlight }
{
}
void paint(Painter& painter) override;
void select();
void highlight();
void unhighlight();
private:
const MenuItem item;
bool keep_highlight_ = false;
};
class MenuView : public View {
public:
std::function<void(void)> on_left { };
MenuView(Rect new_parent_rect = { 0, 0, 240, 304 }, bool keep_highlight = false);
~MenuView();
void add_item(const MenuItem item);
void clear();
template<size_t N>
void add_items(const std::array<MenuItem, N>& items) {
for (const auto& item : items) {
add_item(item);
}
}
MenuItemView* item_view(size_t index) const;
size_t highlighted() const;
bool set_highlighted(int32_t new_value);
void on_focus() override;
void on_blur() override;
bool on_key(const KeyEvent event) override;
bool on_encoder(const EncoderEvent event) override;
private:
void update_items();
void on_tick_second();
bool keep_highlight_ { false };
SignalToken signal_token_tick_second { };
Image arrow_more {
{ 228, 320 - 8, 8, 8 },
&bitmap_more,
Color::white(),
Color::black()
};
const size_t item_height = 24;
bool blink_ = false;
bool more_ = false;
size_t displayed_max_ { 0 };
size_t highlighted_ { 0 };
size_t offset_ { 0 };
};
} /* namespace ui */
#endif/*__UI_MENU_H__*/