Touch.h

Go to the documentation of this file.

/****
 * Touch.h
 *
 * Copyright 2021 mikee47 <mike@sillyhouse.net>
 *
 * This file is part of the Sming-Graphics Library
 *
 * This library 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, version 3 or later.
 *
 * This library 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 library.
 * If not, see <https://www.gnu.org/licenses/>.
 *
 * @author: May 2021 - mikee47 <mike@sillyhouse.net>
 *
 ****/

#pragma once

#include "Types.h"

namespace Graphics
{
class Device;

class Touch
{
public:
    struct State {
        Point pos;
        uint16_t pressure;
    };

    using Callback = Delegate<void()>;

    Touch(Device* device = nullptr) : device(device)
    {
    }

    virtual bool setOrientation(Orientation orientation);

    virtual Size getNativeSize() const = 0;

    virtual State getState() const = 0;

    virtual void setCallback(Callback callback)
    {
        this->callback = callback;
    }

    Size getSize() const
    {
        auto size = getNativeSize();
        if(orientation == Orientation::deg90 || orientation == Orientation::deg270) {
            std::swap(size.w, size.h);
        }
        return size;
    }

    Orientation getOrientation()
    {
        return orientation;
    }

protected:
    Device* device;
    Orientation orientation{};
    Callback callback;
};

} // namespace Graphics

String toString(Graphics::Touch::State state);