field.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2005 by Istv醤 V醨adi
//
// This file is part of dxr3Player, a DVD player written specifically 
// for the DXR3 (aka Hollywood+) decoder card.

// This program 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; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef OUTPUT_UNICHROME_OSD_FIELD_H
#define OUTPUT_UNICHROME_OSD_FIELD_H
//------------------------------------------------------------------------------

#include "unichrome/LogicalWindow.h"

//------------------------------------------------------------------------------

namespace unichrome {

class Unichrome;
class Font;
class Icon;

}

//------------------------------------------------------------------------------

namespace output { namespace unichrome { namespace osd {

//------------------------------------------------------------------------------

/**
 * A field.
 */
class Field : public ::unichrome::LogicalWindow
{
public:
    /**
     * Configuration for fields.
     */
    class Config
    {
    public:
        /**
         * The margin of the value on the side it is adjusted to
         */
        static const size_t valueMargin = 8;
        
        /**
         * The margin of the value on the top and bottom it is adjusted to
         */
        static const size_t valueVerticalMargin = 4;
        
        /**
         * The unichrome device we are using.
         */
        ::unichrome::Unichrome& videoDevice;

        /**
         * The value font.
         */
        ::unichrome::Font& valueFont;

        /**
         * The background color.
         */
        uint32_t backgroundColor;;
        
        /**
         * The height of the value font.
         */
        size_t valueHeight;

        /**
         * The top of the value font.
         */
        ssize_t valueTop;

        /**
         * The bottom of the value font.
         */
        ssize_t valueBottom;

        /**
         * Construct the frame configuration.
         */
        Config(::unichrome::Unichrome& videoDevice,
               ::unichrome::Font& valueFont,
               uint32_t backgroundColor,
               const char* charset = 0);

        /**
         * Get the recommended height of the field.
         */
        size_t getRecommendedHeight() const;

        /**
         * Get the recommended width of the field for the given
         * string.
         */
        size_t getRecommendedWidth(const char* text) const;
    };

protected:
    /**
     * Our config.
     */
    const Config& config;

    /**
     * The value colour.
     */
    uint32_t valueColor;

public:
    /**
     * Construct the field with the given config and size. Note that
     * the size is the net size, i.e. the circles will be out of this
     * size.
     */
    Field(const Config& config, ::unichrome::Window& parentWindow,
          size_t x, size_t y, size_t width, size_t height,
          uint32_t valueColor);

    /**
     * Set the value of the field. 
     */
    void setValue(const char* value, bool rightJustify = false);

    /**
     * Set the value of the field from an Icon.
     */
    void setValue(const ::unichrome::Icon& icon, bool rightJustify = false);

protected:
    /**
     * Print the value without erasing the background.
     */
    void printValue(const char* value, bool rightJustify);
};

//------------------------------------------------------------------------------

} /* namespace output::unichrome::osd */ } /* namespace output::unichrome */ } /* namespace output */

//------------------------------------------------------------------------------
#endif // OUTPUT_UNICHROME_OSD_FIELD_H

// Local variables:
// mode: c++
// End: