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/****************************************************************************
* NxWidgets/libnxwidgets/include/cradiobuttongroup.hxx
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
* me be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************
*
* Portions of this package derive from Woopsi (http://woopsi.org/) and
* portions are original efforts. It is difficult to determine at this
* point what parts are original efforts and which parts derive from Woopsi.
* However, in any event, the work of Antony Dzeryn will be acknowledged
* in most NxWidget files. Thanks Antony!
*
* Copyright (c) 2007-2011, Antony Dzeryn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the names "Woopsi", "Simian Zombie" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __INCLUDE_CRADIOBUTTONGROUP_HXX
#define __INCLUDE_CRADIOBUTTONGROUP_HXX
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <nuttx/nx/nxglib.h>
#include <nuttx/nx/nx.h>
#include "cnxwidget.hxx"
#include "cbutton.hxx"
#include "cwidgetstyle.hxx"
#include "cwidgeteventhandler.hxx"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Implementation Classes
****************************************************************************/
#if defined(__cplusplus)
namespace NXWidgets
{
class CWidgetControl;
class CRadioButton;
/**
* Container class that holds radio button widgets and tracks their status.
* The group provides an easy way to determine which radio button is
* selected. Note that, in order to set the "mu" state for a radio button,
* it is necessary to set the state via the radio button, not the group.
*/
class CRadioButtonGroup : public CNxWidget, public CWidgetEventHandler
{
protected:
CWidgetControl *m_pWidgetControl; /**< The controlling widget */
CRadioButton *m_selectedWidget; /**< Pointer to the currently selected radio button */
/**
* Draw the area of this widget that falls within the clipping region.
* Called by the redraw() function to draw all visible regions.
* @param port The CGraphicsPort to draw to.
* @see redraw()
*/
virtual void drawContents(CGraphicsPort* port);
/**
* Copy constructor is protected to prevent usage.
*/
inline CRadioButtonGroup(const CRadioButtonGroup &radioButtonGroup) : CNxWidget(radioButtonGroup) { }
public:
/**
* Constructor. Note that the group determines its width and height
* from the position and dimensions of its children.
*
* @param pWidgetControl The controlling widget for the display.
* @param x The x coordinate of the group.
* @param y The y coordinate of the group.
* @param style The style that the button should use. If this is not
* specified, the button will use the global default widget
* style.
*/
CRadioButtonGroup(CWidgetControl *pWidgetControl,
nxgl_coord_t x, nxgl_coord_t y,
CWidgetStyle *style = (CWidgetStyle *)NULL);
/**
* Destructor.
*/
~CRadioButtonGroup(void) { }
/**
* Simple method for adding a new radio button to the group.
* This should be used in preference to the usual addWidget() method,
* as this method automatically resizes the group.
*
* @param x The x coordinate of the new button, relative to this
* widget.
* @param y The y coordinate of the new button, relative to this
* widget.
* @param width The width of the new button.
* @param height The height of the new button.
*/
CRadioButton *newRadioButton(nxgl_coord_t x, nxgl_coord_t y,
nxgl_coord_t width, nxgl_coord_t height);
/**
* Gets a pointer to the selected widget.
*
* @return Pointer to the selected widget.
*/
virtual const CRadioButton *getSelectedWidget(void) const;
/**
* Gets the index of the selected widget.
*
* @return The index of the selected widget.
*/
virtual const int getSelectedIndex(void) const;
/**
* Sets the selected radio button to the supplied widget.
*
* @param widget The radio button to select.
*/
virtual void setSelectedWidget(CRadioButton *widget);
/**
* Selects the widget at the specified index.
*
* @param index The index of the widget to select.
*/
virtual void setSelectedIndex(int index);
/**
* Insert the dimensions that this widget wants to have into the rect
* passed in as a parameter. All coordinates are relative to the
* widget's parent. Value is based on the length of the largest string
* in the set of options.
*
* @param rect Reference to a rect to populate with data.
*/
virtual void getPreferredDimensions(CRect &rect) const;
/**
* Handle a mouse click event.
*
* @param e The event data.
*/
virtual void handleClickEvent(const CWidgetEventArgs &e);
/**
* Handle a mouse double-click event.
*
* @param e The event data.
*/
virtual void handleDoubleClickEvent(const CWidgetEventArgs &e);
/**
* Handle a mouse button release event that occurred within the bounds of
* the source widget.
* @param e The event data.
*/
virtual void handleReleaseEvent(const CWidgetEventArgs &e);
/**
* Handle a mouse button release event that occurred outside the bounds of
* the source widget.
*
* @param e The event data.
*/
virtual void handleReleaseOutsideEvent(const CWidgetEventArgs &e);
};
}
#endif // __cplusplus
#endif // __INCLUDE_CRADIOBUTTONGROUP_HXX
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