volumeframe.cc

来自「Linux下比较早的基于命令行的DVD播放器」· CC 代码 · 共 82 行

//
// 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

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

#include "VolumeFrame.h"

#include "unichrome/Font.h"

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

using output::unichrome::osd::VolumeFrame;

using unichrome::Window;

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

size_t VolumeFrame::getValueWidth(const RoundedField::Config& fieldConfig,
                                  size_t width)
{
    size_t valueWidth, valueHeight;
    ssize_t valueLeft, valueTop;

    fieldConfig.valueFont.getDimensions("100", 
                                        valueWidth, valueHeight, 
                                        valueLeft, valueTop);

    valueWidth += 2*fieldConfig.valueMargin;

    if (valueWidth>width) valueWidth = width;
    
    return valueWidth;
}

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

VolumeFrame::VolumeFrame(Config& config, Window& displayWindow,
                         RoundedField::Config& fieldConfig) :
    Frame(config, displayWindow, width, height, "Volume", backgroundColor),
    volumeField(fieldConfig, *innerWindow, 
                35, 10, innerWindow->getWidth()-50, 
                0x00ff99, 0x80000000 | backgroundColor,
                getValueWidth(fieldConfig, innerWindow->getWidth()-50),
                0x00deff5a),
    currentVolume(0)
{
    setVolume(50);
}
    
//------------------------------------------------------------------------------

void VolumeFrame::setVolume(unsigned volume)
{
    if (volume==currentVolume) return;

    char buf[8];
    snprintf(buf, sizeof(buf), "%u", volume);

    volumeField.setValue(volume, 100, buf);
    
    currentVolume = volume;
}

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