updateablewindow.cc

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

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

#include "UpdateableWindow.h"

#include <algorithm>

#include <cstdlib>

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

using unichrome::UpdateableWindow;

using std::min;
using std::max;

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

inline bool UpdateableWindow::isUpdatedAreaEmpty() const
{
    return updatedArea.getStartX()>=getWidth();
}


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

UpdateableWindow::UpdateableWindow(Window& parent, 
                                   size_t x, size_t y, 
                                   size_t width, size_t height) :
    LogicalWindow(parent, x, y, width, height)
{
    resetUpdatedArea();
}

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

void UpdateableWindow::drawLine(size_t x1, size_t y1, size_t x2, size_t y2)
{
    LogicalWindow::drawLine(x1, y1, x2, y2);

    update(x1, y1, x2, y2);
}

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

void UpdateableWindow::fillRectangle(size_t x, size_t y, 
                                     size_t width, size_t height)
{
    if (width>0 && height>0) {
        LogicalWindow::fillRectangle(x, y, width, height);
        
        update(x, y, x+width-1, y+height-1);
    }
}

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

void UpdateableWindow::blit(size_t x, size_t y,
                            size_t width, size_t height,
                            size_t dx, size_t dy,
                            blitType_t blitType)
{
    if (width>0 && height>0) {
        LogicalWindow::blit(x, y, width, height, dx, dy, blitType);
        
        update(dx, dy, dx+width-1, dy+height-1);
    }
}

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

void UpdateableWindow::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, 
                               uint32_t outerColor)
{
    if (width>0 && height>0) {
        LogicalWindow::drawArc(x, y, width, height, x0, y0, r1, r2,
                               arcColor, innerColor, outerColor);
        
        update(x, y, x+width-1, y+height-1);
    }
}

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

void UpdateableWindow::blitInto(Window& window, size_t x, size_t y)
{
    LogicalWindow::blitInto(window, x, y);

    resetUpdatedArea();
}
    
//------------------------------------------------------------------------------

void UpdateableWindow::update()
{
    update(0, 0, getWidth()-1, getHeight()-1);
}

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

void UpdateableWindow::blitUpdatedInto(Window& window, size_t x, size_t y)
{
    if (isUpdatedAreaEmpty()) return;

    disableKeying();

    setSource();
    window.setDestination();

    window.blit(updatedArea.getStartX(), updatedArea.getStartY(),
                updatedArea.getWidth(), updatedArea.getHeight(),
                x+updatedArea.getStartX(), y+updatedArea.getStartY());

    resetUpdatedArea();
}

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

void UpdateableWindow::update(size_t x1, size_t y1, size_t x2, size_t y2)
{
    Area area(min(x1, x2), max(x1, x2), min(y1, y2), max(y1, y2));

    if (isUpdatedAreaEmpty()) {
        updatedArea = area;
    } else {
        updatedArea.merge(area);
    }
}

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

void UpdateableWindow::resetUpdatedArea()
{
    updatedArea.set(getWidth(), getWidth(), getHeight(), getHeight());
}

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