hostlistitem.cpp
来自「Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 」· C++ 代码 · 共 267 行
CPP
267 行
/* NMM - Network-Integrated Multimedia Middleware * * Copyright (C) 2005-2006 * NMM work group, * Computer Graphics Lab, * Saarland University, Germany * http://www.networkmultimedia.org * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Steet, Fifth Floor, Boston, MA 02111-1307 * USA */#include "HostListItem.h"#include <qbitmap.h>#include <qfont.h>#include <qheader.h>#include <qpainter.h>#include <qwhatsthis.h>#include <kglobal.h>#include <kiconloader.h>#include <klocale.h>#include <kpixmap.h>#include <kpixmapeffect.h>#include <kstandarddirs.h>#include "debug.h"#include "HostList.h"#include "nmm_engine.h"HostListItem::HostListItem( QListView *parent, QString hostname, bool audio, bool video, int volume, int status, bool read_only ) : KListViewItem( parent ), m_audio( audio ), m_video( video ), m_volume( volume ), m_status( status ), m_read_only( read_only ){ setText( HostListItem::Hostname, hostname); setPixmap( HostListItem::Status, SmallIcon("info") ); setText( HostListItem::Status, i18n("Unknown") ); setPixmap( HostListItem::Playback, SmallIcon("info") ); setText( HostListItem::Playback, i18n("Unknown") ); if( 24 /*m_pixmapInset.height()*/ > height() ) this->setHeight( 24 /*m_pixmapInset.height()*/ );}HostListItem::~HostListItem(){}int HostListItem::volumeAtPosition( int x ){ if( x > 106 ) return 100; else if ( x < 6 ) return -100; else return (x - 56) * 2;}void HostListItem::updateColumn( int column ) const{ const QRect r = listView()->itemRect( this ); if( !r.isValid() ) return; listView()->viewport()->update( listView()->header()->sectionPos( column ) - listView()->contentsX() + 1, r.y() + 1, listView()->header()->sectionSize( column ) - 2, height() - 2 );}void HostListItem::statusToolTip(){ QWhatsThis::display( prettyStatus( m_status ) );}QString HostListItem::prettyStatus( int error ){ QString st; debug() << "### ERROR code : " << error << endl; st = "<html><body>"; if(!error) st += i18n("So far no status available for this host entry.<br/>Probably this means the host has not been used yet for playback."); if( error & NmmEngine::ERROR_PLAYBACKNODE ) // TODO distinguish between ALSAPlaybackNode and PlaybackNode st += i18n("An error appeared during audio playback initialization. Make sure the <b>PlaybackNode</b> is present on your system. If it is present, the command <b>serverregistry -s</b> in a console will list <b>PlaybackNode</b> as <b>available</b>.<br/>"); if( error & NmmEngine::ERROR_DISPLAYNODE ) st += i18n("An error appeared during video playback initialization. Make sure the <b>XDisplayNode</b> is present on your system. If it is present, the command <b>serverregistry -s</b> in a console will list <b>XDisplayNode</b> as <b>available</b>.<br/>"); if( error ) st += i18n("In general have a look at the <a href=\"http://www.networkmultimedia.org/Download/Binary/index.html#configure\">Configuration and tests</a> instructions."); st += "</body></html>"; return st;}void HostListItem::paintCell(QPainter * p, const QColorGroup & cg, int column, int width, int align ){ QColorGroup m_cg( cg ); // TODO: reuse icons? if( column == HostListItem::Video ) { if( m_video ) { // video ? if( m_read_only ) setPixmap( HostListItem::Video, SmallIcon("nmm_option_on_readonly") ); else setPixmap( HostListItem::Video, SmallIcon("nmm_option_on") ); } else if( ! m_read_only) setPixmap( HostListItem::Video, SmallIcon("nmm_option_off") ); } else if( column == HostListItem::Audio ) { if( m_audio ) {// audio ? if( m_read_only ) setPixmap( HostListItem::Audio, SmallIcon("nmm_option_on_readonly") ); else setPixmap( HostListItem::Audio, SmallIcon("nmm_option_on") ); } else if( ! m_read_only) setPixmap( HostListItem::Audio, SmallIcon("nmm_option_off") ); } else if( column == HostListItem::Status ) { QFont font( p->font() ); if( ! m_status ) // Unknown { font.setBold( false ); setText( HostListItem::Status , i18n("Unknown") ); } else if( m_status == NmmEngine::STATUS_OK ) { font.setBold( false ); m_cg.setColor( QColorGroup::Text, Qt::darkGreen ); setText( HostListItem::Status , i18n("OK") ); } else { // error font.setBold( true ); m_cg.setColor( QColorGroup::Text, Qt::red ); setText( HostListItem::Status , i18n("Failed") ); } p->setFont( font ); } else if( column == HostListItem::Volume ) { QPixmap buf( width, height() ); QColor bg = listView()->viewport()->backgroundColor(); buf.fill( bg ); bitBlt( &buf, 0, 0, pixmapVolume( PixInset ) ); // Draw gradient static int padding = 7; static int vol; // pixelposition if( this == ((HostList*)listView())->m_hoveredVolume ) { vol = listView()->viewportToContents( listView()->viewport()->mapFromGlobal( QCursor::pos() ) ).x(); vol -= listView()->header()->sectionPos( HostListItem::Volume ); } else vol = (m_volume / 2) + 56; //std::cerr << "rel vol = " << vol << std::endl; static int center = 56; if( vol > center ) { bitBlt( &buf, 0, 0, pixmapVolume( PixRight ), 0, 0, vol + 1 /* TODO: why + 1??? */ ); } else if ( vol < center ) { bitBlt( &buf, vol, 0, pixmapVolume( PixLeft ), vol, 0, 56 ); } else {} // Calculate actual volume string from pixelposition vol = volumeAtPosition( vol ); QString vol_text; if( vol > 0 ) vol_text = "+"; vol_text += QString::number( vol ); vol_text += '%'; // Draw relative volume number QPainter p_number(&buf); p_number.setPen( cg.buttonText() ); QFont font; font.setPixelSize( 9 ); p_number.setFont( font ); const QRect rect( 40, 0, 34, 15 ); p_number.drawText( rect, Qt::AlignRight | Qt::AlignVCenter, vol_text ); p_number.end(); //bitBlt( p_number.device(), 0, 0, &buf ); p->drawPixmap( 0, 0, buf ); return; } KListViewItem::paintCell(p, m_cg, column, width, align);}QPixmap* HostListItem::pixmapVolume( int type ){ if( type == PixInset ) { static QPixmap m_pixmapInset( locate( "data", "amarok/images/nmm-volume-inset.png" ) ); return &m_pixmapInset; } else if( type == PixRight ) { static QPixmap m_pixmapGradientRight = generateGradient( PixRight ); return &m_pixmapGradientRight; } else if ( type == PixLeft ) { static QPixmap m_pixmapGradientLeft = generateGradient( PixLeft ); return &m_pixmapGradientLeft; } return 0;}QPixmap HostListItem::generateGradient( int type ){ QPixmap temp; if( type == PixRight ) temp = QPixmap( locate( "data", "amarok/images/nmm-gradient-right.png" ) ); else // PixLeft temp = QPixmap( locate( "data", "amarok/images/nmm-gradient-left.png" ) ); const QBitmap mask( temp.createHeuristicMask() ); KPixmap result = QPixmap( 113, 24 ); if( type == PixRight) KPixmapEffect::gradient( result, listView()->colorGroup().background(), listView()->colorGroup().highlight(), KPixmapEffect::HorizontalGradient ); else KPixmapEffect::gradient( result, listView()->colorGroup().highlight(), listView()->colorGroup().background(), KPixmapEffect::HorizontalGradient ); result.setMask( mask); return result;}⌨️ 快捷键说明
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