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 <QIcon>
  43 #include <QPixmap>
  44 #include <QPixmapCache>
  45 #include <QPoint>
  46 #include <QProcess>
  47 #include <QRegularExpression>
  48 #include <QScreen>
  49 #include <QSize>
  50 #include <QStyle>
  51 #include <QThread>
  52 #include <QUrl>
  53 #include <QWidget>
  54 #include <QWindow>
  55
  56 #include "base/global.h"
  57 #include "base/path.h"
  58 #include "base/tag.h"
  59 #include "base/utils/fs.h"
  60 #include "base/utils/version.h"
  61
  62 QPixmap Utils::Gui::scaledPixmap(const QIcon &icon, const int height)
  63 {
  64     Q_ASSERT(height > 0);
  65
  66     return icon.pixmap(height);
  67 }
  68
  69 QPixmap Utils::Gui::scaledPixmap(const Path &path, const int height)
  70 {
  71     Q_ASSERT(height >= 0);
  72
  73     const QPixmap pixmap {path.data()};
  74     return (height == 0) ? pixmap : pixmap.scaledToHeight(height, Qt::SmoothTransformation);
  75 }
  76
  77 QSize Utils::Gui::smallIconSize(const QWidget *widget)
  78 {
  79     // Get DPI scaled icon size (device-dependent), see QT source
  80     // under a 1080p screen is usually 16x16
  81     const int s = QApplication::style()->pixelMetric(QStyle::PM_SmallIconSize, nullptr, widget);
  82     return {s, s};
  83 }
  84
  85 QSize Utils::Gui::mediumIconSize(const QWidget *widget)
  86 {
  87     // under a 1080p screen is usually 24x24
  88     return ((smallIconSize(widget) + largeIconSize(widget)) / 2);
  89 }
  90
  91 QSize Utils::Gui::largeIconSize(const QWidget *widget)
  92 {
  93     // Get DPI scaled icon size (device-dependent), see QT source
  94     // under a 1080p screen is usually 32x32
  95     const int s = QApplication::style()->pixelMetric(QStyle::PM_LargeIconSize, nullptr, widget);
  96     return {s, s};
  97 }
  98
  99 QPoint Utils::Gui::screenCenter(const QWidget *w)
 100 {
 101     // Returns the QPoint which the widget will be placed center on screen (where parent resides)
 102
 103     if (!w)
 104         return {};
 105
 106     QRect r = QGuiApplication::primaryScreen()->availableGeometry();
 107     const QPoint primaryScreenCenter {(r.x() + (r.width() - w->frameSize().width()) / 2), (r.y() + (r.height() - w->frameSize().height()) / 2)};
 108
 109     const QWidget *parent = w->parentWidget();
 110     if (!parent)
 111         return primaryScreenCenter;
 112
 113     const QWindow *window = parent->window()->windowHandle();
 114     if (!window)
 115         return primaryScreenCenter;
 116
 117     const QScreen *screen = window->screen();
 118     if (!screen)
 119         return primaryScreenCenter;
 120
 121     r = screen->availableGeometry();
 122     return {(r.x() + (r.width() - w->frameSize().width()) / 2), (r.y() + (r.height() - w->frameSize().height()) / 2)};
 123 }
 124
 125 // Open the given path with an appropriate application
 126 void Utils::Gui::openPath(const Path &path)
 127 {
 128     // Hack to access samba shares with QDesktopServices::openUrl
 129     const QUrl url = path.data().startsWith(u"//")
 130         ? QUrl(u"file:" + path.data())
 131         : QUrl::fromLocalFile(path.data());
 132
 133 #ifdef Q_OS_WIN
 134     auto *thread = QThread::create([path]()
 135     {
 136         if (SUCCEEDED(::CoInitializeEx(NULL, (COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE))))
 137         {
 138             const std::wstring pathWStr = path.toString().toStdWString();
 139
 140             ::ShellExecuteW(nullptr, nullptr, pathWStr.c_str(), nullptr, nullptr, SW_SHOWNORMAL);
 141
 142             ::CoUninitialize();
 143         }
 144     });
 145     QObject::connect(thread, &QThread::finished, thread, &QObject::deleteLater);
 146     thread->start();
 147 #else
 148     QDesktopServices::openUrl(url);
 149 #endif
 150 }
 151
 152 // Open the parent directory of the given path with a file manager and select
 153 // (if possible) the item at the given path
 154 void Utils::Gui::openFolderSelect(const Path &path)
 155 {
 156     // If the item to select doesn't exist, try to open its parent
 157     if (!path.exists())
 158     {
 159         openPath(path.parentPath());
 160         return;
 161     }
 162
 163 #ifdef Q_OS_WIN
 164     auto *thread = QThread::create([path]()
 165     {
 166         if (SUCCEEDED(::CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE)))
 167         {
 168             const std::wstring pathWStr = path.toString().toStdWString();
 169             PIDLIST_ABSOLUTE pidl = ::ILCreateFromPathW(pathWStr.c_str());
 170             if (pidl)
 171             {
 172                 ::SHOpenFolderAndSelectItems(pidl, 0, nullptr, 0);
 173                 ::ILFree(pidl);
 174             }
 175
 176             ::CoUninitialize();
 177         }
 178     });
 179     QObject::connect(thread, &QThread::finished, thread, &QObject::deleteLater);
 180     thread->start();
 181 #elif defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
 182     const int lineMaxLength = 64;
 183
 184     QProcess proc;
 185     proc.start(u"xdg-mime"_s, {u"query"_s, u"default"_s, u"inode/directory"_s});
 186     proc.waitForFinished();
 187     const auto output = QString::fromLocal8Bit(proc.readLine(lineMaxLength).simplified());
 188     if ((output == u"dolphin.desktop") || (output == u"org.kde.dolphin.desktop"))
 189     {
 190         proc.startDetached(u"dolphin"_s, {u"--select"_s, path.toString()});
 191     }
 192     else if ((output == u"nautilus.desktop") || (output == u"org.gnome.Nautilus.desktop")
 193                  || (output == u"nautilus-folder-handler.desktop"))
 194     {
 195         proc.start(u"nautilus"_s, {u"--version"_s});
 196         proc.waitForFinished();
 197         const auto nautilusVerStr = QString::fromLocal8Bit(proc.readLine(lineMaxLength)).remove(QRegularExpression(u"[^0-9.]"_s));
 198         using NautilusVersion = Utils::Version<3>;
 199         if (NautilusVersion::fromString(nautilusVerStr, {1, 0, 0}) > NautilusVersion(3, 28, 0))
 200             proc.startDetached(u"nautilus"_s, {(Fs::isDir(path) ? path.parentPath() : path).toString()});
 201         else
 202             proc.startDetached(u"nautilus"_s, {u"--no-desktop"_s, (Fs::isDir(path) ? path.parentPath() : path).toString()});
 203     }
 204     else if (output == u"nemo.desktop")
 205     {
 206         proc.startDetached(u"nemo"_s, {u"--no-desktop"_s, (Fs::isDir(path) ? path.parentPath() : path).toString()});
 207     }
 208     else if ((output == u"konqueror.desktop") || (output == u"kfmclient_dir.desktop"))
 209     {
 210         proc.startDetached(u"konqueror"_s, {u"--select"_s, path.toString()});
 211     }
 212     else
 213     {
 214         // "caja" manager can't pinpoint the file, see: https://github.com/qbittorrent/qBittorrent/issues/5003
 215         openPath(path.parentPath());
 216     }
 217 #else
 218     openPath(path.parentPath());
 219 #endif
 220 }
 221
 222 QString Utils::Gui::tagToWidgetText(const Tag &tag)
 223 {
 224     return tag.toString().replace(u'&', u"&&"_s);
 225 }
 226
 227 Tag Utils::Gui::widgetTextToTag(const QString &text)
 228 {
 229     // replace pairs of '&' with single '&' and remove non-paired occurrences of '&'
 230     QString cleanedText;
 231     cleanedText.reserve(text.size());
 232     bool amp = false;
 233     for (const QChar c : text)
 234     {
 235         if (c == u'&')
 236         {
 237             amp = !amp;
 238             if (amp)
 239                 continue;
 240         }
 241
 242         cleanedText.append(c);
 243     }
 244
 245     return Tag(cleanedText);
 246 }