src/gui/utils.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
   4  * Copyright (C) 2017  Mike Tzou
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19  *
  20  * In addition, as a special exception, the copyright holders give permission to
  21  * link this program with the OpenSSL project's "OpenSSL" library (or with
  22  * modified versions of it that use the same license as the "OpenSSL" library),
  23  * and distribute the linked executables. You must obey the GNU General Public
  24  * License in all respects for all of the code used other than "OpenSSL".  If you
  25  * modify file(s), you may extend this exception to your version of the file(s),
  26  * but you are not obligated to do so. If you do not wish to do so, delete this
  27  * exception statement from your version.
  28  */
  29
  30 #include "utils.h"
  31
  32 #include <QtSystemDetection>
  33
  34 #ifdef Q_OS_WIN
  35 #include <objbase.h>
  36 #include <shlobj.h>
  37 #include <shellapi.h>
  38 #endif
  39
  40 #include <QApplication>
  41 #include <QDesktopServices>
  42 #include <QPixmap>
  43 #include <QPixmapCache>
  44 #include <QPoint>
  45 #include <QProcess>
  46 #include <QRegularExpression>
  47 #include <QScreen>
  48 #include <QSize>
  49 #include <QStyle>
  50 #include <QThread>
  51 #include <QUrl>
  52 #include <QWidget>
  53 #include <QWindow>
  54
  55 #include "base/global.h"
  56 #include "base/path.h"
  57 #include "base/tag.h"
  58 #include "base/utils/fs.h"
  59 #include "base/utils/version.h"
  60
  61 QPixmap Utils::Gui::scaledPixmap(const Path &path, const int height)
  62 {
  63     Q_ASSERT(height >= 0);
  64
  65     const QPixmap pixmap {path.data()};
  66     return (height == 0) ? pixmap : pixmap.scaledToHeight(height, Qt::SmoothTransformation);
  67 }
  68
  69 QSize Utils::Gui::smallIconSize(const QWidget *widget)
  70 {
  71     // Get DPI scaled icon size (device-dependent), see QT source
  72     // under a 1080p screen is usually 16x16
  73     const int s = QApplication::style()->pixelMetric(QStyle::PM_SmallIconSize, nullptr, widget);
  74     return {s, s};
  75 }
  76
  77 QSize Utils::Gui::mediumIconSize(const QWidget *widget)
  78 {
  79     // under a 1080p screen is usually 24x24
  80     return ((smallIconSize(widget) + largeIconSize(widget)) / 2);
  81 }
  82
  83 QSize Utils::Gui::largeIconSize(const QWidget *widget)
  84 {
  85     // Get DPI scaled icon size (device-dependent), see QT source
  86     // under a 1080p screen is usually 32x32
  87     const int s = QApplication::style()->pixelMetric(QStyle::PM_LargeIconSize, nullptr, widget);
  88     return {s, s};
  89 }
  90
  91 QPoint Utils::Gui::screenCenter(const QWidget *w)
  92 {
  93     // Returns the QPoint which the widget will be placed center on screen (where parent resides)
  94
  95     if (!w)
  96         return {};
  97
  98     QRect r = QGuiApplication::primaryScreen()->availableGeometry();
  99     const QPoint primaryScreenCenter {(r.x() + (r.width() - w->frameSize().width()) / 2), (r.y() + (r.height() - w->frameSize().height()) / 2)};
 100
 101     const QWidget *parent = w->parentWidget();
 102     if (!parent)
 103         return primaryScreenCenter;
 104
 105     const QWindow *window = parent->window()->windowHandle();
 106     if (!window)
 107         return primaryScreenCenter;
 108
 109     const QScreen *screen = window->screen();
 110     if (!screen)
 111         return primaryScreenCenter;
 112
 113     r = screen->availableGeometry();
 114     return {(r.x() + (r.width() - w->frameSize().width()) / 2), (r.y() + (r.height() - w->frameSize().height()) / 2)};
 115 }
 116
 117 // Open the given path with an appropriate application
 118 void Utils::Gui::openPath(const Path &path)
 119 {
 120     // Hack to access samba shares with QDesktopServices::openUrl
 121     const QUrl url = path.data().startsWith(u"//")
 122         ? QUrl(u"file:" + path.data())
 123         : QUrl::fromLocalFile(path.data());
 124
 125 #ifdef Q_OS_WIN
 126     auto *thread = QThread::create([path]()
 127     {
 128         if (SUCCEEDED(::CoInitializeEx(NULL, (COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE))))
 129         {
 130             const std::wstring pathWStr = path.toString().toStdWString();
 131
 132             ::ShellExecuteW(nullptr, nullptr, pathWStr.c_str(), nullptr, nullptr, SW_SHOWNORMAL);
 133
 134             ::CoUninitialize();
 135         }
 136     });
 137     thread->setObjectName("Utils::Gui::openPath thread");
 138     QObject::connect(thread, &QThread::finished, thread, &QObject::deleteLater);
 139     thread->start();
 140 #else
 141     QDesktopServices::openUrl(url);
 142 #endif
 143 }
 144
 145 // Open the parent directory of the given path with a file manager and select
 146 // (if possible) the item at the given path
 147 void Utils::Gui::openFolderSelect(const Path &path)
 148 {
 149     // If the item to select doesn't exist, try to open its parent
 150     if (!path.exists())
 151     {
 152         openPath(path.parentPath());
 153         return;
 154     }
 155
 156 #ifdef Q_OS_WIN
 157     auto *thread = QThread::create([path]()
 158     {
 159         if (SUCCEEDED(::CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE)))
 160         {
 161             const std::wstring pathWStr = path.toString().toStdWString();
 162             PIDLIST_ABSOLUTE pidl = ::ILCreateFromPathW(pathWStr.c_str());
 163             if (pidl)
 164             {
 165                 ::SHOpenFolderAndSelectItems(pidl, 0, nullptr, 0);
 166                 ::ILFree(pidl);
 167             }
 168
 169             ::CoUninitialize();
 170         }
 171     });
 172     thread->setObjectName("Utils::Gui::openFolderSelect thread");
 173     QObject::connect(thread, &QThread::finished, thread, &QObject::deleteLater);
 174     thread->start();
 175 #elif defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
 176     const int lineMaxLength = 64;
 177
 178     QProcess proc;
 179     proc.start(u"xdg-mime"_s, {u"query"_s, u"default"_s, u"inode/directory"_s});
 180     proc.waitForFinished();
 181     const auto output = QString::fromLocal8Bit(proc.readLine(lineMaxLength).simplified());
 182     if ((output == u"dolphin.desktop") || (output == u"org.kde.dolphin.desktop"))
 183     {
 184         proc.startDetached(u"dolphin"_s, {u"--select"_s, path.toString()});
 185     }
 186     else if ((output == u"nautilus.desktop") || (output == u"org.gnome.Nautilus.desktop")
 187                  || (output == u"nautilus-folder-handler.desktop"))
 188     {
 189         proc.start(u"nautilus"_s, {u"--version"_s});
 190         proc.waitForFinished();
 191         const auto nautilusVerStr = QString::fromLocal8Bit(proc.readLine(lineMaxLength)).remove(QRegularExpression(u"[^0-9.]"_s));
 192         using NautilusVersion = Utils::Version<3>;
 193         if (NautilusVersion::fromString(nautilusVerStr, {1, 0, 0}) > NautilusVersion(3, 28, 0))
 194             proc.startDetached(u"nautilus"_s, {(Fs::isDir(path) ? path.parentPath() : path).toString()});
 195         else
 196             proc.startDetached(u"nautilus"_s, {u"--no-desktop"_s, (Fs::isDir(path) ? path.parentPath() : path).toString()});
 197     }
 198     else if (output == u"nemo.desktop")
 199     {
 200         proc.startDetached(u"nemo"_s, {u"--no-desktop"_s, (Fs::isDir(path) ? path.parentPath() : path).toString()});
 201     }
 202     else if ((output == u"konqueror.desktop") || (output == u"kfmclient_dir.desktop"))
 203     {
 204         proc.startDetached(u"konqueror"_s, {u"--select"_s, path.toString()});
 205     }
 206     else if (output == u"thunar.desktop")
 207     {
 208         proc.startDetached(u"thunar"_s, {path.toString()});
 209     }
 210     else
 211     {
 212         // "caja" manager can't pinpoint the file, see: https://github.com/qbittorrent/qBittorrent/issues/5003
 213         openPath(path.parentPath());
 214     }
 215 #else
 216     openPath(path.parentPath());
 217 #endif
 218 }
 219
 220 QString Utils::Gui::tagToWidgetText(const Tag &tag)
 221 {
 222     return tag.toString().replace(u'&', u"&&"_s);
 223 }
 224
 225 Tag Utils::Gui::widgetTextToTag(const QString &text)
 226 {
 227     // replace pairs of '&' with single '&' and remove non-paired occurrences of '&'
 228     QString cleanedText;
 229     cleanedText.reserve(text.size());
 230     bool amp = false;
 231     for (const QChar c : text)
 232     {
 233         if (c == u'&')
 234         {
 235             amp = !amp;
 236             if (amp)
 237                 continue;
 238         }
 239
 240         cleanedText.append(c);
 241     }
 242
 243     return Tag(cleanedText);
 244 }