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 <QtGlobal>
  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/utils/fs.h"
  59 #include "base/utils/version.h"
  60
  61 QPixmap Utils::Gui::scaledPixmap(const QIcon &icon, const QWidget *widget, const int height)
  62 {
  63     Q_UNUSED(widget);  // TODO: remove it
  64     Q_ASSERT(height > 0);
  65
  66     return icon.pixmap(height);
  67 }
  68
  69 QPixmap Utils::Gui::scaledPixmap(const Path &path, const QWidget *widget, const int height)
  70 {
  71     Q_UNUSED(widget);
  72     Q_ASSERT(height >= 0);
  73
  74     const QPixmap pixmap {path.data()};
  75     return (height == 0) ? pixmap : pixmap.scaledToHeight(height, Qt::SmoothTransformation);
  76 }
  77
  78 QSize Utils::Gui::smallIconSize(const QWidget *widget)
  79 {
  80     // Get DPI scaled icon size (device-dependent), see QT source
  81     // under a 1080p screen is usually 16x16
  82     const int s = QApplication::style()->pixelMetric(QStyle::PM_SmallIconSize, nullptr, widget);
  83     return {s, s};
  84 }
  85
  86 QSize Utils::Gui::mediumIconSize(const QWidget *widget)
  87 {
  88     // under a 1080p screen is usually 24x24
  89     return ((smallIconSize(widget) + largeIconSize(widget)) / 2);
  90 }
  91
  92 QSize Utils::Gui::largeIconSize(const QWidget *widget)
  93 {
  94     // Get DPI scaled icon size (device-dependent), see QT source
  95     // under a 1080p screen is usually 32x32
  96     const int s = QApplication::style()->pixelMetric(QStyle::PM_LargeIconSize, nullptr, widget);
  97     return {s, s};
  98 }
  99
 100 QPoint Utils::Gui::screenCenter(const QWidget *w)
 101 {
 102     // Returns the QPoint which the widget will be placed center on screen (where parent resides)
 103
 104     if (!w)
 105         return {};
 106
 107     QRect r = QGuiApplication::primaryScreen()->availableGeometry();
 108     const QPoint primaryScreenCenter {(r.x() + (r.width() - w->frameSize().width()) / 2), (r.y() + (r.height() - w->frameSize().height()) / 2)};
 109
 110     const QWidget *parent = w->parentWidget();
 111     if (!parent)
 112         return primaryScreenCenter;
 113
 114     const QWindow *window = parent->window()->windowHandle();
 115     if (!window)
 116         return primaryScreenCenter;
 117
 118     const QScreen *screen = window->screen();
 119     if (!screen)
 120         return primaryScreenCenter;
 121
 122     r = screen->availableGeometry();
 123     return {(r.x() + (r.width() - w->frameSize().width()) / 2), (r.y() + (r.height() - w->frameSize().height()) / 2)};
 124 }
 125
 126 // Open the given path with an appropriate application
 127 void Utils::Gui::openPath(const Path &path)
 128 {
 129     // Hack to access samba shares with QDesktopServices::openUrl
 130     const QUrl url = path.data().startsWith(u"//")
 131         ? QUrl(u"file:" + path.data())
 132         : QUrl::fromLocalFile(path.data());
 133
 134 #ifdef Q_OS_WIN
 135     auto *thread = QThread::create([path]()
 136     {
 137         if (SUCCEEDED(::CoInitializeEx(NULL, (COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE))))
 138         {
 139             const std::wstring pathWStr = path.toString().toStdWString();
 140
 141             ::ShellExecuteW(nullptr, nullptr, pathWStr.c_str(), nullptr, nullptr, SW_SHOWNORMAL);
 142
 143             ::CoUninitialize();
 144         }
 145     });
 146     QObject::connect(thread, &QThread::finished, thread, &QObject::deleteLater);
 147     thread->start();
 148 #else
 149     QDesktopServices::openUrl(url);
 150 #endif
 151 }
 152
 153 // Open the parent directory of the given path with a file manager and select
 154 // (if possible) the item at the given path
 155 void Utils::Gui::openFolderSelect(const Path &path)
 156 {
 157     // If the item to select doesn't exist, try to open its parent
 158     if (!path.exists())
 159     {
 160         openPath(path.parentPath());
 161         return;
 162     }
 163
 164 #ifdef Q_OS_WIN
 165     auto *thread = QThread::create([path]()
 166     {
 167         if (SUCCEEDED(::CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE)))
 168         {
 169             const std::wstring pathWStr = path.toString().toStdWString();
 170             PIDLIST_ABSOLUTE pidl = ::ILCreateFromPathW(pathWStr.c_str());
 171             if (pidl)
 172             {
 173                 ::SHOpenFolderAndSelectItems(pidl, 0, nullptr, 0);
 174                 ::ILFree(pidl);
 175             }
 176
 177             ::CoUninitialize();
 178         }
 179     });
 180     QObject::connect(thread, &QThread::finished, thread, &QObject::deleteLater);
 181     thread->start();
 182 #elif defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
 183     const int lineMaxLength = 64;
 184
 185     QProcess proc;
 186     proc.start(u"xdg-mime"_s, {u"query"_s, u"default"_s, u"inode/directory"_s});
 187     proc.waitForFinished();
 188     const auto output = QString::fromLocal8Bit(proc.readLine(lineMaxLength).simplified());
 189     if ((output == u"dolphin.desktop") || (output == u"org.kde.dolphin.desktop"))
 190     {
 191         proc.startDetached(u"dolphin"_s, {u"--select"_s, path.toString()});
 192     }
 193     else if ((output == u"nautilus.desktop") || (output == u"org.gnome.Nautilus.desktop")
 194                  || (output == u"nautilus-folder-handler.desktop"))
 195     {
 196         proc.start(u"nautilus"_s, {u"--version"_s});
 197         proc.waitForFinished();
 198         const auto nautilusVerStr = QString::fromLocal8Bit(proc.readLine(lineMaxLength)).remove(QRegularExpression(u"[^0-9.]"_s));
 199         using NautilusVersion = Utils::Version<3>;
 200         if (NautilusVersion::fromString(nautilusVerStr, {1, 0, 0}) > NautilusVersion(3, 28, 0))
 201             proc.startDetached(u"nautilus"_s, {(Fs::isDir(path) ? path.parentPath() : path).toString()});
 202         else
 203             proc.startDetached(u"nautilus"_s, {u"--no-desktop"_s, (Fs::isDir(path) ? path.parentPath() : path).toString()});
 204     }
 205     else if (output == u"nemo.desktop")
 206     {
 207         proc.startDetached(u"nemo"_s, {u"--no-desktop"_s, (Fs::isDir(path) ? path.parentPath() : path).toString()});
 208     }
 209     else if ((output == u"konqueror.desktop") || (output == u"kfmclient_dir.desktop"))
 210     {
 211         proc.startDetached(u"konqueror"_s, {u"--select"_s, path.toString()});
 212     }
 213     else
 214     {
 215         // "caja" manager can't pinpoint the file, see: https://github.com/qbittorrent/qBittorrent/issues/5003
 216         openPath(path.parentPath());
 217     }
 218 #else
 219     openPath(path.parentPath());
 220 #endif
 221 }
 222
 223 QString Utils::Gui::tagToWidgetText(const QString &tag)
 224 {
 225     return QString(tag).replace(u'&', u"&&"_s);
 226 }
 227
 228 QString Utils::Gui::widgetTextToTag(const QString &text)
 229 {
 230     // replace pairs of '&' with single '&' and remove non-paired occurrences of '&'
 231     QString cleanedText;
 232     cleanedText.reserve(text.size());
 233     bool amp = false;
 234     for (const QChar c : text)
 235     {
 236         if (c == u'&')
 237         {
 238             amp = !amp;
 239             if (amp)
 240                 continue;
 241         }
 242
 243         cleanedText.append(c);
 244     }
 245
 246     return cleanedText;
 247 }