transmission/qt/utils.cc

205 lines
5.2 KiB
C++

/*
* This file Copyright (C) 2009 Charles Kerr <charles@transmissionbt.com>
*
* This file is licensed by the GPL version 2. Works owned by the
* Transmission project are granted a special exemption to clause 2(b)
* so that the bulk of its code can remain under the MIT license.
* This exemption does not extend to derived works not owned by
* the Transmission project.
*
* $Id$
*/
#include <iostream>
#include <QApplication>
#include <QDataStream>
#include <QFile>
#include <QFileInfo>
#include <QObject>
#include <QSet>
#include <QStyle>
#include <libtransmission/transmission.h>
#include <libtransmission/utils.h>
#include "qticonloader.h"
#include "utils.h"
#define KILOBYTE_FACTOR 1024.0
#define MEGABYTE_FACTOR ( 1024.0 * 1024.0 )
#define GIGABYTE_FACTOR ( 1024.0 * 1024.0 * 1024.0 )
QString
Utils :: sizeToString( double size )
{
QString str;
if( !size )
{
str = tr( "None" );
}
else if( size < 1024.0 )
{
const int i = (int)size;
str = tr( "%Ln byte(s)", 0, i );
}
else
{
double displayed_size;
if( size < (int64_t)MEGABYTE_FACTOR )
{
displayed_size = (double)size / KILOBYTE_FACTOR;
str = tr( "%L1 KB" ).arg( displayed_size, 0, 'f', 1 );
}
else if( size < (int64_t)GIGABYTE_FACTOR )
{
displayed_size = (double)size / MEGABYTE_FACTOR;
str = tr( "%L1 MB" ).arg( displayed_size, 0, 'f', 1 );
}
else
{
displayed_size = (double) size / GIGABYTE_FACTOR;
str = tr( "%L1 GB" ).arg( displayed_size, 0, 'f', 1 );
}
}
return str;
}
QString
Utils :: ratioToString( double ratio )
{
QString buf;
if( (int)ratio == TR_RATIO_NA )
buf = tr( "None" );
else if( (int)ratio == TR_RATIO_INF )
buf = QString::fromUtf8( "\xE2\x88\x9E" );
else if( ratio < 10.0 )
buf.sprintf( "%'.2f", ratio );
else if( ratio < 100.0 )
buf.sprintf( "%'.1f", ratio );
else
buf.sprintf( "%'.0f", ratio );
return buf;
}
QString
Utils :: timeToString( int seconds )
{
int days, hours, minutes;
QString d, h, m, s;
QString str;
if( seconds < 0 )
seconds = 0;
days = seconds / 86400;
hours = ( seconds % 86400 ) / 3600;
minutes = ( seconds % 3600 ) / 60;
seconds %= 60;
d = tr( "%Ln day(s)", 0, days );
h = tr( "%Ln hour(s)", 0, hours );
m = tr( "%Ln minute(s)", 0, minutes );
s = tr( "%Ln second(s)", 0, seconds );
if( days )
{
if( days >= 4 || !hours )
str = d;
else
str = tr( "%1, %2" ).arg( d ).arg( h );
}
else if( hours )
{
if( hours >= 4 || !minutes )
str = h;
else
str = tr( "%1, %2" ).arg( h ).arg( m );
}
else if( minutes )
{
if( minutes >= 4 || !seconds )
str = m;
else
str = tr( "%1, %2" ).arg( m ).arg( s );
}
else
{
str = s;
}
return str;
}
QString
Utils :: speedToString( const Speed& speed )
{
const double kbps( speed.kbps( ) );
QString str;
if( kbps < 1000.0 ) /* 0.0 KB to 999.9 KB */
str = tr( "%L1 KB/s" ).arg( kbps, 0, 'f', 1 );
else if( kbps < 102400.0 ) /* 0.98 MB to 99.99 MB */
str = tr( "%L1 MB/s" ).arg( kbps/1024.0, 0, 'f', 2 );
else // insane speeds
str = tr( "%L1 GB/s" ).arg( kbps/(1024.0*1024.0), 0, 'f', 1 );
return str;
}
void
Utils :: toStderr( const QString& str )
{
std::cerr << qPrintable(str) << std::endl;
}
const QIcon&
Utils :: guessMimeIcon( const QString& filename )
{
enum { DISK, DOCUMENT, PICTURE, VIDEO, ARCHIVE, AUDIO, APP, TYPE_COUNT };
static QIcon fallback;
static QIcon fileIcons[TYPE_COUNT];
static QSet<QString> suffixes[TYPE_COUNT];
if( fileIcons[0].isNull( ) )
{
fallback = QApplication::style()->standardIcon( QStyle :: SP_FileIcon );
fileIcons[DISK]= QtIconLoader :: icon( "media-optical", fallback );
suffixes[DISK] << "iso";
fileIcons[DOCUMENT] = QtIconLoader :: icon( "text-x-generic", fallback );
suffixes[DOCUMENT] << "txt" << "doc" << "pdf" << "rtf" << "htm" << "html";
fileIcons[PICTURE] = QtIconLoader :: icon( "image-x-generic", fallback );
suffixes[PICTURE] << "jpg" << "jpeg" << "png" << "gif" << "tiff" << "pcx";
fileIcons[VIDEO] = QtIconLoader :: icon( "video-x-generic", fallback );
suffixes[VIDEO] << "avi" << "mpeg" << "mp4" << "mkv" << "mov";
fileIcons[ARCHIVE] = QtIconLoader :: icon( "package-x-generic", fallback );
suffixes[ARCHIVE] << "rar" << "zip" << "sft" << "tar" << "7z" << "cbz";
fileIcons[AUDIO] = QtIconLoader :: icon( "audio-x-generic", fallback );
suffixes[AUDIO] << "aiff" << "au" << "m3u" << "mp2" << "wav" << "mp3" << "ape" << "mid"
<< "aac" << "ogg" << "ra" << "ram" << "flac" << "mpc" << "shn";
fileIcons[APP] = QtIconLoader :: icon( "application-x-executable", fallback );
suffixes[APP] << "exe";
}
QString suffix( QFileInfo( filename ).suffix( ).toLower( ) );
for( int i=0; i<TYPE_COUNT; ++i )
if( suffixes[i].contains( suffix ) )
return fileIcons[i];
return fallback;
}