Improve startup speed and use single instance process

CMakeLists.txt

@@ -18,8 +18,14 @@ find_package(KF5KIO)
 find_package(KF5Solid)
 find_package(KF5WindowSystem)
 
+qt5_add_dbus_adaptor(DBUS_SOURCES
+                     com.cutefish.FileManager.xml
+                     application.h Application)
+
 add_executable(cutefish-filemanager
   main.cpp
+  application.cpp
+  window.cpp
   model/foldermodel.cpp
   model/placesmodel.cpp
   model/placesitem.cpp
@@ -56,6 +62,8 @@ add_executable(cutefish-filemanager
   desktopiconprovider.cpp
 
   qml.qrc
+
+  ${DBUS_SOURCES}
 )
 
 target_link_libraries(cutefish-filemanager

application.cpp

@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     Reion Wong <reion@cutefishos.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "application.h"
+#include "window.h"
+#include "desktop/desktop.h"
+#include "thumbnailer/thumbnailprovider.h"
+#include "filemanageradaptor.h"
+
+#include <QCommandLineParser>
+#include <QQmlApplicationEngine>
+#include <QQmlContext>
+
+#include <QDBusConnection>
+#include <QPixmapCache>
+#include <QTranslator>
+#include <QIcon>
+#include <QDir>
+
+Application::Application(int& argc, char** argv)
+    : QApplication(argc, argv)
+    , m_instance(false)
+{
+    if (QDBusConnection::sessionBus().registerService("com.cutefish.FileManager")) {
+        setOrganizationName("cutefishos");
+        setWindowIcon(QIcon::fromTheme("file-manager"));
+
+        new FileManagerAdaptor(this);
+        QDBusConnection::sessionBus().registerObject("/FileManager", this);
+
+        // Translations
+        QLocale locale;
+        QString qmFilePath = QString("%1/%2.qm").arg("/usr/share/cutefish-filemanager/translations/").arg(locale.name());
+        if (QFile::exists(qmFilePath)) {
+            QTranslator *translator = new QTranslator(this);
+            if (translator->load(qmFilePath)) {
+                installTranslator(translator);
+            } else {
+                translator->deleteLater();
+            }
+        }
+
+        m_instance = true;
+    }
+}
+
+int Application::run()
+{
+    if (!parseCommandLineArgs())
+        return 0;
+
+    return QApplication::exec();
+}
+
+void Application::openFiles(const QStringList &paths)
+{
+    for (const QString &path : paths) {
+        openWindow(path);
+    }
+}
+
+void Application::emptyTrash()
+{
+    Window *w = new Window;
+    w->load(QUrl("qrc:/qml/Dialogs/EmptyTrashDialog.qml"));
+}
+
+void Application::openWindow(const QString &path)
+{
+    Window *w = new Window;
+    w->rootContext()->setContextProperty("arg", path);
+    w->addImageProvider("thumbnailer", new ThumbnailProvider());
+    w->load(QUrl("qrc:/qml/main.qml"));
+}
+
+bool Application::parseCommandLineArgs()
+{
+    QCommandLineParser parser;
+    parser.setApplicationDescription(QStringLiteral("File Manager"));
+    parser.addHelpOption();
+
+    parser.addPositionalArgument("files", "Files", "[FILE1, FILE2,...]");
+
+    QCommandLineOption desktopOption(QStringList() << "d" << "desktop" << "Desktop Mode");
+    parser.addOption(desktopOption);
+
+    QCommandLineOption emptyTrashOption(QStringList() << "e" << "empty-trash" << "Empty Trash");
+    parser.addOption(emptyTrashOption);
+
+    parser.process(arguments());
+
+    if (m_instance) {
+        QPixmapCache::setCacheLimit(2048);
+
+        if (parser.isSet(desktopOption)) {
+            Desktop desktop;
+        } else {
+            QStringList paths = parser.positionalArguments();
+
+            if (paths.isEmpty()) {
+                paths.append(QDir::currentPath());
+            }
+
+            openFiles(paths);
+        }
+    } else {
+        QDBusInterface iface("com.cutefish.FileManager",
+                             "/FileManager",
+                             "com.cutefish.FileManager",
+                             QDBusConnection::sessionBus(), this);
+
+        if (parser.isSet(emptyTrashOption)) {
+            // Empty Dialog
+            iface.call("emptyTrash");
+        } else {
+            QStringList paths = parser.positionalArguments();
+
+            if (paths.isEmpty()) {
+                paths.append(QDir::currentPath());
+            }
+
+            iface.call("openFiles", paths);
+        }
+    }
+
+    return m_instance;
+}

application.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     Reion Wong <reion@cutefishos.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef APPLICATION_H
+#define APPLICATION_H
+
+#include <QApplication>
+
+class Application : public QApplication
+{
+    Q_OBJECT
+
+public:
+    explicit Application(int& argc, char** argv);
+
+    int run();
+
+    // DBus
+    void openFiles(const QStringList &paths);
+    void emptyTrash();
+
+private:
+    void openWindow(const QString &path);
+
+private:
+    bool parseCommandLineArgs();
+
+private:
+    bool m_instance;
+};
+
+#endif // APPLICATION_H

com.cutefish.FileManager.xml

@@ -0,0 +1,9 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+  <interface name="com.cutefish.FileManager">
+    <method name="openFiles">
+      <arg type="as" direction="in"/>
+    </method>
+    <method name="emptyTrash"></method>
+  </interface>
+</node>

main.cpp

@@ -17,15 +17,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <QApplication>
-#include <QCommandLineParser>
-#include <QQmlApplicationEngine>
-#include <QQmlContext>
-
-#include <QPixmapCache>
-#include <QTranslator>
-#include <QLocale>
-
+#include "application.h"
 #include "model/placesmodel.h"
 #include "model/foldermodel.h"
 #include "model/pathbarmodel.h"
@@ -39,31 +31,11 @@
 #include "helper/fm.h"
 #include "helper/shortcut.h"
 
-#include "thumbnailer/thumbnailprovider.h"
-
 int main(int argc, char *argv[])
 {
     QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps, true);
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);
 
-    QApplication app(argc, argv);
-    app.setOrganizationName("cutefishos");
-    app.setWindowIcon(QIcon::fromTheme("file-manager"));
-
-    QPixmapCache::setCacheLimit(1024 * 10);
-
-    // Translations
-    QLocale locale;
-    QString qmFilePath = QString("%1/%2.qm").arg("/usr/share/cutefish-filemanager/translations/").arg(locale.name());
-    if (QFile::exists(qmFilePath)) {
-        QTranslator *translator = new QTranslator(app.instance());
-        if (translator->load(qmFilePath)) {
-            app.installTranslator(translator);
-        } else {
-            translator->deleteLater();
-        }
-    }
-
     // Register QML Type.
     const char *uri = "Cutefish.FileManager";
     qmlRegisterType<PlacesModel>(uri, 1, 0, "PlacesModel");
@@ -82,57 +54,6 @@ int main(int argc, char *argv[])
     qmlRegisterAnonymousType<QAction>(uri, 1);
 #endif
 
-    QCommandLineParser parser;
-    parser.setApplicationDescription(QStringLiteral("File Manager"));
-    parser.addHelpOption();
-
-    parser.addPositionalArgument("files", "Files", "[FILE1, FILE2,...]");
-
-    QCommandLineOption desktopOption(QStringList() << "d" << "desktop" << "Desktop Mode");
-    parser.addOption(desktopOption);
-
-    QCommandLineOption emptyTrashOption(QStringList() << "e" << "empty-trash" << "Empty Trash");
-    parser.addOption(emptyTrashOption);
-
-    parser.process(app);
-
-    if (parser.isSet(desktopOption)) {
-        app.setApplicationName("cutefish-desktop");
-        Desktop desktop;
-        return app.exec();
-    } else if (parser.isSet(emptyTrashOption)) {
-        // Empty Dialog
-        QQmlApplicationEngine engine;
-        const QUrl url(QStringLiteral("qrc:/qml/Dialogs/EmptyTrashDialog.qml"));
-        engine.load(url);
-        return app.exec();
-    }
-
-    QQmlApplicationEngine engine;
-    const QUrl url(QStringLiteral("qrc:/qml/main.qml"));
-    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
-                     &app, [url](QObject *obj, const QUrl &objUrl) {
-        if (!obj && url == objUrl)
-            QCoreApplication::exit(-1);
-    }, Qt::QueuedConnection);
-
-    // Handle urls
-    if (!parser.positionalArguments().isEmpty()) {
-        QStringList arguments = parser.positionalArguments();
-        QUrl url(arguments.first());
-        if (!url.isValid())
-            url = QUrl::fromLocalFile(arguments.first());
-
-        if (url.isValid())
-            engine.rootContext()->setContextProperty("arg", arguments.first());
-        else
-            engine.rootContext()->setContextProperty("arg", "");
-    } else {
-        engine.rootContext()->setContextProperty("arg", "");
-    }
-
-    engine.load(url);
-    engine.addImageProvider("thumbnailer", new ThumbnailProvider());
-
-    return app.exec();
+    Application app(argc, argv);
+    return app.run();
 }

qml/FolderPage.qml

@@ -109,15 +109,15 @@ Item {
         id: _background
         anchors.fill: parent
         anchors.rightMargin: 1
-        radius: FishUI.Theme.smallRadius
+        radius: FishUI.Theme.mediumRadius
         color: FishUI.Theme.secondBackgroundColor
 
         Rectangle {
             id: _topRightRect
             anchors.right: parent.right
             anchors.top: parent.top
-            height: FishUI.Theme.smallRadius
-            width: FishUI.Theme.smallRadius
+            height: FishUI.Theme.mediumRadius
+            width: FishUI.Theme.mediumRadius
             color: FishUI.Theme.secondBackgroundColor
         }
 
@@ -125,8 +125,8 @@ Item {
             id: _bottomLeftRect
             anchors.left: parent.left
             anchors.bottom: parent.bottom
-            height: FishUI.Theme.smallRadius
-            width: FishUI.Theme.smallRadius
+            height: FishUI.Theme.mediumRadius
+            width: FishUI.Theme.mediumRadius
             color: FishUI.Theme.secondBackgroundColor
         }
     }

qml/SideBar.qml

@@ -56,7 +56,7 @@ ListView {
     highlightResizeDuration : 0
 
     highlight: Rectangle {
-        radius: FishUI.Theme.smallRadius
+        radius: FishUI.Theme.mediumRadius
         color: FishUI.Theme.highlightColor
     }
 

thumbnailer/thumbnailprovider.cpp

@@ -34,8 +34,6 @@ QImage ThumbnailProvider::requestImage(const QString &id, QSize *size, const QSi
         *size = requestedSize;
 
     QString f = id;
-    qDebug() << id << QFile::exists(f.replace("file://", ""));
-
     QString thumbnail = ThumbnailCache::self()->requestThumbnail(id, requestedSize);
 
     if (!thumbnail.isEmpty()) {

window.cpp

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     Reion Wong <reion@cutefishos.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "window.h"
+#include <QEvent>
+#include <QDebug>
+#include <QQuickWindow>
+
+Window::Window(QObject *parent)
+    : QQmlApplicationEngine(parent)
+{
+}
+
+void Window::load(const QUrl &url)
+{
+    QQmlApplicationEngine::load(url);
+
+    QQuickWindow *w = qobject_cast<QQuickWindow *>(rootObjects().first());
+
+    if (w)
+        w->installEventFilter(this);
+}
+
+bool Window::eventFilter(QObject *obj, QEvent *e)
+{
+    if (e->type() == QEvent::Close) {
+        clearComponentCache();
+        deleteLater();
+        e->accept();
+    }
+
+    return QObject::eventFilter(obj, e);
+}

window.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     Reion Wong <reion@cutefishos.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef WINDOW_H
+#define WINDOW_H
+
+#include <QQmlApplicationEngine>
+
+class Window : public QQmlApplicationEngine
+{
+    Q_OBJECT
+
+public:
+    explicit Window(QObject *parent = nullptr);
+
+    void load(const QUrl &url);
+
+protected:
+    bool eventFilter(QObject *o, QEvent *e);
+};
+
+#endif // WINDOW_H