Button.h

// Copyright (c) 2016-2018 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
 
#pragma once
#include <kiwano/base/component/MouseSensor.h>
 
namespace kiwano
{
 
class KGE_API ButtonBase : public MouseSensor
{
public:
    enum class Event
    {
        MouseEntered,  
        MouseExited,   
        Pressed,       
        Released,      
        Clicked,       
    };
 
    ButtonBase();
 
    virtual ~ButtonBase();
 
    virtual void OnEvent(Event evt) = 0;
 
protected:
    void HandleEvent(kiwano::Event* evt) override;
};
 
class KGE_API Button : public ButtonBase
{
public:
    using Callback = Function<void(Button* /* self */, Event /* evt */)>;
 
    using ClickedCallback = Function<void(Button* /* self */)>;
 
    Button();
 
    Button(const Callback& cb);
 
    void SetCallback(const Callback& cb);
 
    void SetCallbackOnClicked(const ClickedCallback& cb);
 
    void OnEvent(Event evt) override;
 
private:
    Callback        cb_;
    ClickedCallback clicked_cb_;
};
 
inline void Button::SetCallback(const Button::Callback& cb)
{
    cb_ = cb;
}
 
inline void Button::SetCallbackOnClicked(const Button::ClickedCallback& cb)
{
    clicked_cb_ = cb;
}
 
}  // namespace kiwano