window.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, but now handles other
// hardware as well. These files contain a (mostly) user-space driver 
// for the Unichrome board found on Via's EPIA motherboards.
//
// The information for implementing this driver has been gathered
// from the following sources:
//
// - The DirectFB Unichrome driver
//   Copyright (c) 2003 Andreas Robinson, All rights reserved.
//
// - Andreas Robinson's MPEG-2 decoder for the Unichrome board.
//   Copyright (c) 2003 Andreas Robinson, All rights reserved.
//
// - Via's Unichrome Framebuffer driver
//   Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
//   Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.


// 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 UNICHROME_WINDOW_H
#define UNICHROME_WINDOW_H
//------------------------------------------------------------------------------

#include "util/Area.h"
#include "util/Painter.h"

#include <cstdlib>

#include <inttypes.h>

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

namespace unichrome {

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

/**
 * A window is a rectangular area in a Unichrome board's video memory.
 *
 * This class is a base class for different kind of windows. It
 * contains those operations that must be supported by all windows.
 */
class Window
{
public:
    /**
     * Blitting types.
     */
    typedef enum blitType_t {
        /// Colour copy
        BLIT_COPY,

        /// Monochrome copy
        BLIT_MONO_COPY,

        /// Transparent monochrome copy
        BLIT_MONO_TRANSPARENT_COPY,

        /// 8x8 monochrome pattern
        BLIT_MONO_PATTERN,

        /// 8x8 monochrome transparent pattern
        BLIT_MONO_TRANSPARENT_PATTERN
    };

protected:
    /**
     * The area this window represents.
     */
    Area area;

public:
    /**
     * Construct the window with the given area.
     */
    Window(size_t x, size_t y, size_t width, size_t height);

    /**
     * Virtual destructor.
     */
    virtual ~Window() {}

    /**
     * Get the width of the window.
     */
    size_t getWidth() const;

    /**
     * Get the height of the window.
     */
    size_t getHeight() const;

    /**
     * Set the area of the window.
     */
    void setArea(size_t x, size_t y, size_t width, size_t height);

    /**
     * Set the foreground colour.
     */
    virtual void setForeground(uint32_t color) = 0;

    /**
     * Set the background colour.
     */
    virtual void setBackground(uint32_t color) = 0;

    /**
     * Disable colour keying.
     */
    virtual void disableKeying() = 0;

    /**
     * Enable source colour keying.
     *
     * @param invert invert the key, i.e. copy only those pixels that
     *               are equal to the source key, but only their alpha
     *               values.
     */
    virtual void enableSourceKeying(bool invert = false) = 0;

    /**
     * Set the source colour key.
     */
    virtual void setSourceKey(uint32_t color) = 0;

    /**
     * Setup a monochrome pattern.
     */
    virtual void setMonoPattern(const uint32_t pattern[2], 
                                size_t xOffset, size_t yOffset) = 0;

    /**
     * Draw a line.
     */
    virtual void drawLine(size_t x1, size_t y1, size_t x2, size_t y2) = 0;

    /**
     * Fill rectangle.
     */
    virtual void fillRectangle(size_t x, size_t y, 
                               size_t width, size_t height) = 0;
    
    /**
     * Blit from the given starting position and size to the given
     * destination position.
     */
    virtual void blit(size_t x, size_t y,
                      size_t width, size_t height,
                      size_t dx, size_t dy,
                      blitType_t blitType = BLIT_COPY) = 0;

    /**
     * Draw an arc into the window with the given parameters
     */
    virtual void drawArc(size_t x, size_t y, size_t width, size_t height, 
                         ssize_t x0, ssize_t y0, size_t r1, size_t r2,
                         uint32_t arcColor,
                         uint32_t innerColor = Painter::transparentColor, 
                         uint32_t outerColor = Painter::transparentColor) = 0;
    /**
     * Set this window as the source of an operation.
     */
    virtual void setSource() = 0;

    /**
     * Set this window as the destination of an operation.
     */
    virtual void setDestination() = 0;

    /**
     * Blit the window into the given other window at the given
     * position.
     */
    virtual void blitInto(Window& window, size_t x, size_t y);
    
    /**
     * Fill the whole window with the given colour.
     */
    void fill(uint32_t color);

    /**
     * Fill an area equal to this window's are in the given other
     * window at the position.
     * position.
     */
    void fillIn(Window& window, size_t x, size_t y, uint32_t color);
};

//------------------------------------------------------------------------------
// Inline definitions
//------------------------------------------------------------------------------

inline Window::Window(size_t x, size_t y, size_t width, size_t height) :
    area(x, x + width - 1,
         y, y + height - 1)
{
}

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

inline size_t Window::getWidth() const
{
    return area.getWidth();
}

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

inline size_t Window::getHeight() const
{
    return area.getHeight();
}

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

inline void Window::setArea(size_t x, size_t y, size_t width, size_t height)
{
    area.set(x, x + width - 1, y, y + height - 1);
}

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

inline void Window::blitInto(Window& window, size_t x, size_t y)
{
    disableKeying();

    setSource();
    window.setDestination();

    window.blit(0, 0, getWidth(), getHeight(), x, y);
}

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

inline void Window::fill(uint32_t color)
{
    setForeground(color);
    fillRectangle(0, 0, getWidth(), getHeight());
}

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

inline void Window::fillIn(Window& window, size_t x, size_t y, uint32_t color)
{
    window.setForeground(color);
    window.fillRectangle(x, y, getWidth(), getHeight());
}

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

} /* namespace unichrome */

//------------------------------------------------------------------------------
#endif // UNICHROME_WINDOW_H

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