File content as of revision 0:33d4e66780c0:

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* Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
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#include "Button.hpp"

static const int deselectedBorderWidth = 1; // Border width when button is deselected.
static const int selectedBorderWidth = 2; // Border width when button is selected.
static const int borderPadding = selectedBorderWidth + 1; // Total width of the border region.

Button::Button(const std::string & text, Graphic * parent) :
    Graphic(parent), m_border(deselectedBorderWidth, this), m_label(text, this)
{
    setWidth(preferredWidth());
    setHeight(preferredHeight());
}
    
int Button::preferredWidth() const
{
    return m_label.preferredWidth() + 2 * borderPadding;
}

int Button::preferredHeight() const
{
    return m_label.preferredHeight() + 2 * borderPadding;
}

void Button::doPostLayout()
{
    if (!regionValid())
    {
        m_border.setBorderWidth(focused() ? selectedBorderWidth : deselectedBorderWidth);
    }
}

void Button::doLayout()
{
    m_border.setWidth(width());
    m_border.setHeight(height());
    m_label.setX(borderPadding);
    m_label.setY(borderPadding);
    m_label.setWidth(m_border.width() - 2 * borderPadding);
    m_label.setHeight(m_border.height() - 2 * borderPadding);
}

bool Button::doProcessKey(Key key)
{
    bool handled = (key == LeftClickKey);
    if (handled && m_clickedHandler)
    {
        m_clickedHandler();
    }
    return handled;
}