transmission/qt/Utils.cc

242 lines
7.1 KiB
C++

/*
* This file Copyright (C) 2009-2015 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
#ifdef _WIN32
#include <windows.h>
#include <shellapi.h>
#endif
#include <QAbstractItemView>
#include <QApplication>
#include <QColor>
#include <QDataStream>
#include <QFile>
#include <QFileDialog>
#include <QFileInfo>
#include <QHeaderView>
#include <QIcon>
#include <QInputDialog>
#include <QObject>
#include <QPixmapCache>
#include <QSet>
#include <QStyle>
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
#include <QMimeDatabase>
#include <QMimeType>
#endif
#include <libtransmission/transmission.h>
#include <libtransmission/utils.h> // tr_formatter
#include "Utils.h"
/***
****
***/
#if defined(_WIN32) && QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
// Should be in QtWinExtras soon, but for now let's import it manually
extern QPixmap qt_pixmapFromWinHICON(HICON icon);
#endif
#ifdef _WIN32
namespace
{
void
addAssociatedFileIcon (const QFileInfo& fileInfo, UINT iconSize, QIcon& icon)
{
QString const pixmapCacheKey = QLatin1String ("tr_file_ext_")
+ QString::number (iconSize)
+ QLatin1Char ('_')
+ fileInfo.suffix ();
QPixmap pixmap;
if (!QPixmapCache::find (pixmapCacheKey, &pixmap))
{
const QString filename = fileInfo.fileName ();
SHFILEINFO shellFileInfo;
if (::SHGetFileInfoW (reinterpret_cast<const wchar_t*> (filename.utf16 ()), FILE_ATTRIBUTE_NORMAL,
&shellFileInfo, sizeof(shellFileInfo),
SHGFI_ICON | iconSize | SHGFI_USEFILEATTRIBUTES) != 0)
{
if (shellFileInfo.hIcon != NULL)
{
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
pixmap = qt_pixmapFromWinHICON (shellFileInfo.hIcon);
#else
pixmap = QPixmap::fromWinHICON (shellFileInfo.hIcon);
#endif
::DestroyIcon (shellFileInfo.hIcon);
}
}
QPixmapCache::insert (pixmapCacheKey, pixmap);
}
if (!pixmap.isNull ())
icon.addPixmap (pixmap);
}
} // namespace
#endif
QIcon
Utils::guessMimeIcon (const QString& filename)
{
static const QIcon fallback = qApp->style ()->standardIcon (QStyle::SP_FileIcon);
#ifdef _WIN32
QIcon icon;
if (!filename.isEmpty ())
{
const QFileInfo fileInfo (filename);
addAssociatedFileIcon (fileInfo, SHGFI_SMALLICON, icon);
addAssociatedFileIcon (fileInfo, 0, icon);
addAssociatedFileIcon (fileInfo, SHGFI_LARGEICON, icon);
}
if (!icon.isNull ())
return icon;
#elif QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
QMimeDatabase mimeDb;
QMimeType mimeType = mimeDb.mimeTypeForFile (filename, QMimeDatabase::MatchExtension);
if (mimeType.isValid ())
return QIcon::fromTheme (mimeType.iconName (), QIcon::fromTheme (mimeType.genericIconName (), fallback));
#else
enum { DISK, DOCUMENT, PICTURE, VIDEO, ARCHIVE, AUDIO, APP, TYPE_COUNT };
static QIcon fileIcons[TYPE_COUNT];
static QSet<QString> suffixes[TYPE_COUNT];
if (fileIcons[0].isNull ())
{
suffixes[DISK] << QString::fromLatin1("iso");
fileIcons[DISK]= QIcon::fromTheme (QString::fromLatin1("media-optical"), fallback);
const char * doc_types[] = {
"abw", "csv", "doc", "dvi", "htm", "html", "ini", "log", "odp",
"ods", "odt", "pdf", "ppt", "ps", "rtf", "tex", "txt", "xml" };
for (const char * t: doc_types)
suffixes[DOCUMENT] << QString::fromLatin1(t);
fileIcons[DOCUMENT] = QIcon::fromTheme (QString::fromLatin1("text-x-generic"), fallback);
const char * pic_types[] = {
"bmp", "gif", "jpg", "jpeg", "pcx", "png", "psd", "ras", "tga", "tiff" };
for (const char * t: pic_types)
suffixes[PICTURE] << QString::fromLatin1(t);
fileIcons[PICTURE] = QIcon::fromTheme (QString::fromLatin1("image-x-generic"), fallback);
const char * vid_types[] = {
"3gp", "asf", "avi", "mkv", "mov", "mpeg", "mpg", "mp4",
"ogm", "ogv", "qt", "rm", "wmv" };
for (const char * t: vid_types)
suffixes[VIDEO] << QString::fromLatin1(t);
fileIcons[VIDEO] = QIcon::fromTheme (QString::fromLatin1("video-x-generic"), fallback);
const char * arc_types[] = {
"7z", "ace", "bz2", "cbz", "gz", "gzip", "lzma", "rar", "sft", "tar", "zip" };
for (const char * t: arc_types)
suffixes[ARCHIVE] << QString::fromLatin1(t);
fileIcons[ARCHIVE] = QIcon::fromTheme (QString::fromLatin1("package-x-generic"), fallback);
const char * aud_types[] = {
"aac", "ac3", "aiff", "ape", "au", "flac", "m3u", "m4a", "mid", "midi", "mp2",
"mp3", "mpc", "nsf", "oga", "ogg", "ra", "ram", "shn", "voc", "wav", "wma" };
for (const char * t: aud_types)
suffixes[AUDIO] << QString::fromLatin1(t);
fileIcons[AUDIO] = QIcon::fromTheme (QString::fromLatin1("audio-x-generic"), fallback);
const char * exe_types[] = { "bat", "cmd", "com", "exe" };
for (const char * t: exe_types)
suffixes[APP] << QString::fromLatin1(t);
fileIcons[APP] = QIcon::fromTheme (QString::fromLatin1("application-x-executable"), fallback);
}
QString suffix (QFileInfo (filename).suffix ().toLower ());
for (int i=0; i<TYPE_COUNT; ++i)
if (suffixes[i].contains (suffix))
return fileIcons[i];
#endif
return fallback;
}
bool
Utils::isValidUtf8 (const char * s)
{
int n; // number of bytes in a UTF-8 sequence
for (const char *c = s; *c; c += n)
{
if ((*c & 0x80) == 0x00) n = 1; // ASCII
else if ((*c & 0xc0) == 0x80) return false; // not valid
else if ((*c & 0xe0) == 0xc0) n = 2;
else if ((*c & 0xf0) == 0xe0) n = 3;
else if ((*c & 0xf8) == 0xf0) n = 4;
else if ((*c & 0xfc) == 0xf8) n = 5;
else if ((*c & 0xfe) == 0xfc) n = 6;
else return false;
for (int m = 1; m < n; m++)
if ((c[m] & 0xc0) != 0x80)
return false;
}
return true;
}
QString
Utils::removeTrailingDirSeparator (const QString& path)
{
const QFileInfo pathInfo (path);
return pathInfo.fileName ().isEmpty () ? pathInfo.absolutePath () : pathInfo.absoluteFilePath ();
}
int
Utils::measureViewItem (QAbstractItemView * view, const QString& text)
{
QStyleOptionViewItemV4 option;
option.initFrom (view);
option.features = QStyleOptionViewItemV2::HasDisplay;
option.text = text;
option.textElideMode = Qt::ElideNone;
option.font = view->font ();
return view->style ()->sizeFromContents (QStyle::CT_ItemViewItem, &option,
QSize (QWIDGETSIZE_MAX, QWIDGETSIZE_MAX), view).width ();
}
int
Utils::measureHeaderItem (QHeaderView * view, const QString& text)
{
QStyleOptionHeader option;
option.initFrom (view);
option.text = text;
option.sortIndicator = view->isSortIndicatorShown () ? QStyleOptionHeader::SortDown :
QStyleOptionHeader::None;
return view->style ()->sizeFromContents (QStyle::CT_HeaderSection, &option, QSize (), view).width ();
}
QColor
Utils::getFadedColor (const QColor& color)
{
QColor fadedColor (color);
fadedColor.setAlpha (128);
return fadedColor;
}