nuttx-apps/include/graphics/nxwidgets/cprogressbar.hxx

/****************************************************************************
 * apps/include/graphics/nxwidgets/cprogressbar.hxx
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

/****************************************************************************
 *
 * 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 __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CPROGRESSBAR_HXX
#define __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CPROGRESSBAR_HXX

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdint.h>
#include <stdbool.h>

#include <nuttx/nx/nxglib.h>

#include "graphics/nxwidgets/cnxwidget.hxx"

/****************************************************************************
 * Pre-Processor Definitions
 ****************************************************************************/

/****************************************************************************
 * Implementation Classes
 ****************************************************************************/

#if defined(__cplusplus)

namespace NXWidgets
{
  /**
   * Forward references
   */

  class CWidgetControl;

  /**
   * Widget providing a horizontal progress bar.
   */

  class CProgressBar : public CNxWidget
  {
  protected:
    int16_t m_minimumValue;    /**< Minimum value that the grip can represent. */
    int16_t m_maximumValue;    /**< Maximum value that the grip can represent. */
    int16_t m_value;           /**< Value of the progress bar. */
    bool m_showPercentageText; /**< If true, completion percentage is drawn
                                    over the bar. */

    /**
     * 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);

    /**
     * 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 drawBorder(CGraphicsPort *port);

    /**
     * Copy constructor is protected to prevent usage.
     */

    inline CProgressBar(const CProgressBar &progressBar) : CNxWidget(progressBar) { }

  public:

    /**
     * Constructor.
     *
     * @param pWidgetControl The widget control for the display.
     * @param x The x coordinate of the progress bar, relative to its parent.
     * @param y The y coordinate of the progress bar, relative to its parent.
     * @param width The width of the progress bar.
     * @param height The height of the progress bar.
     */

    CProgressBar(CWidgetControl *pWidgetControl,
                 nxgl_coord_t x, nxgl_coord_t y,
                 nxgl_coord_t width, nxgl_coord_t height);

    /**
     * Destructor.
     */

    virtual inline ~CProgressBar(void) { }

    /**
     * Get the smallest value that the progress bar can represent.
     *
     * @return The smallest value.
     */

    inline const int16_t getMinimumValue(void) const
    {
      return m_minimumValue;
    }

    /**
     * Get the largest value that the progress bar can represent.
     *
     * @return The largest value.
     */

    inline const int16_t getMaximumValue(void) const
    {
      return m_maximumValue;
    }

    /**
     * Get the current value of the progress bar.
     * return The current progress bar value.
     */

    inline const int16_t getValue(void) const
    {
      return m_value;
    }

    /**
     * Set the smallest value that the progress bar can represent.
     *
     * @param value The smallest value.
     */

    inline void setMinimumValue(const int16_t value)
    {
      m_minimumValue = value;
    }

    /**
     * Set the largest value that the progress bar can represent.
     *
     * @param value The largest value.
     */

    inline void setMaximumValue(const int16_t value)
    {
      m_maximumValue = value;
    }

    /**
     * Set the value that of the progress bar.
     *
     * @param value The new value.
     */

    void setValue(const int16_t value);

    /**
     * Shows the percentage text over the bar.
     */

    inline void showPercentageText(void)
    {
      m_showPercentageText = true;
      redraw();
    }

    /**
     * Hides the percentage text over the bar.
     */

    inline void hidePercentageText(void)
    {
      m_showPercentageText = false;
      redraw();
    }
  };
}

#endif // __cplusplus

#endif // __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CPROGRESSBAR_HXX