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485 lines
14 KiB
485 lines
14 KiB
/* BEGIN_COMMON_COPYRIGHT_HEADER
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* (c)LGPL2+
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*
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* LXDE-Qt - a lightweight, Qt based, desktop toolset
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* http://razor-qt.org
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*
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* Copyright: 2012 Razor team
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* Authors:
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* Alexander Sokoloff <sokoloff.a@gmail.com>
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*
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* This program or library is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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* END_COMMON_COPYRIGHT_HEADER */
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#include "plugin.h"
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#include "ilxqtpanelplugin.h"
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#include "lxqtpanel.h"
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#include <QDebug>
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#include <QProcessEnvironment>
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#include <QStringList>
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#include <QDir>
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#include <QFileInfo>
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#include <QPluginLoader>
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#include <QGridLayout>
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#include <QDialog>
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#include <QEvent>
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#include <QMenu>
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#include <QMouseEvent>
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#include <QApplication>
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#include <QCryptographicHash>
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#include <memory>
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#include <LXQt/Settings>
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#include <LXQt/Translator>
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#include <XdgIcon>
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// statically linked built-in plugins
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#include "../plugin-clock/lxqtclock.h" // clock
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#include "../plugin-desktopswitch/desktopswitch.h" // desktopswitch
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#include "../plugin-mainmenu/lxqtmainmenu.h" // mainmenu
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#include "../plugin-quicklaunch/lxqtquicklaunchplugin.h" // quicklaunch
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#include "../plugin-showdesktop/showdesktop.h" // showdesktop
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#include "../plugin-spacer/spacer.h" // spacer
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#include "../plugin-statusnotifier/statusnotifier.h" // statusnotifier
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#include "../plugin-taskbar/lxqttaskbarplugin.h" // taskbar
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#include "../plugin-tray/lxqttrayplugin.h" // tray
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#include "../plugin-worldclock/lxqtworldclock.h" // worldclock
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QColor Plugin::mMoveMarkerColor= QColor(255, 0, 0, 255);
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/************************************************
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************************************************/
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Plugin::Plugin(const LXQt::PluginInfo &desktopFile, const QString &settingsFile, const QString &settingsGroup, LXQtPanel *panel) :
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QFrame(panel),
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mDesktopFile(desktopFile),
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mPluginLoader(0),
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mPlugin(0),
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mPluginWidget(0),
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mAlignment(AlignLeft),
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mSettingsGroup(settingsGroup),
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mPanel(panel)
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{
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mSettings = new LXQt::Settings(settingsFile, QSettings::IniFormat, this);
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connect(mSettings, SIGNAL(settingsChanged()), this, SLOT(settingsChanged()));
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mSettings->beginGroup(settingsGroup);
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mSettingsHash = calcSettingsHash();
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setWindowTitle(desktopFile.name());
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mName = desktopFile.name();
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QStringList dirs;
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dirs << QProcessEnvironment::systemEnvironment().value("LXQTPANEL_PLUGIN_PATH").split(":");
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dirs << PLUGIN_DIR;
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bool found = false;
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if(ILXQtPanelPluginLibrary const * pluginLib = findStaticPlugin(desktopFile.id()))
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{
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// this is a static plugin
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found = true;
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loadLib(pluginLib);
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}
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else {
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// this plugin is a dynamically loadable module
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QString baseName = QString("lib%1.so").arg(desktopFile.id());
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foreach(QString dirName, dirs)
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{
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QFileInfo fi(QDir(dirName), baseName);
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if (fi.exists())
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{
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found = true;
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if (loadModule(fi.absoluteFilePath()))
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break;
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}
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}
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}
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if (!isLoaded())
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{
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if (!found)
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qWarning() << QString("Plugin %1 not found in the").arg(desktopFile.id()) << dirs;
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return;
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}
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// Load plugin translations
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LXQt::Translator::translatePlugin(desktopFile.id(), QLatin1String("lxqt-panel"));
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setObjectName(mPlugin->themeId() + "Plugin");
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// plugin handle for easy context menu
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setProperty("NeedsHandle", mPlugin->flags().testFlag(ILXQtPanelPlugin::NeedsHandle));
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QString s = mSettings->value("alignment").toString();
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// Retrun default value
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if (s.isEmpty())
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{
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mAlignment = (mPlugin->flags().testFlag(ILXQtPanelPlugin::PreferRightAlignment)) ?
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Plugin::AlignRight :
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Plugin::AlignLeft;
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}
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else
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{
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mAlignment = (s.toUpper() == "RIGHT") ?
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Plugin::AlignRight :
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Plugin::AlignLeft;
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}
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if (mPluginWidget)
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{
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QGridLayout* layout = new QGridLayout(this);
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layout->setSpacing(0);
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layout->setMargin(0);
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layout->setContentsMargins(0, 0, 0, 0);
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setLayout(layout);
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layout->addWidget(mPluginWidget, 0, 0);
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}
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saveSettings();
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}
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/************************************************
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************************************************/
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Plugin::~Plugin()
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{
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delete mPlugin;
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if (mPluginLoader)
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{
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mPluginLoader->unload();
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delete mPluginLoader;
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}
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}
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void Plugin::setAlignment(Plugin::Alignment alignment)
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{
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mAlignment = alignment;
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saveSettings();
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}
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/************************************************
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************************************************/
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namespace
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{
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//helper types for static plugins storage & binary search
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typedef std::unique_ptr<ILXQtPanelPluginLibrary> plugin_ptr_t;
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typedef std::pair<QString, plugin_ptr_t > plugin_pair_t;
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//NOTE: Please keep the plugins sorted by name while adding new plugins.
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static plugin_pair_t const static_plugins[] = {
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#if defined(WITH_CLOCK_PLUGIN)
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{ QStringLiteral("clock"), plugin_ptr_t{new LXQtClockPluginLibrary} },// clock
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#endif
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#if defined(WITH_DESKTOPSWITCH_PLUGIN)
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{ QStringLiteral("desktopswitch"), plugin_ptr_t{new DesktopSwitchPluginLibrary} },// desktopswitch
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#endif
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#if defined(WITH_MAINMENU_PLUGIN)
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{ QStringLiteral("mainmenu"), plugin_ptr_t{new LXQtMainMenuPluginLibrary} },// mainmenu
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#endif
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#if defined(WITH_QUICKLAUNCH_PLUGIN)
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{ QStringLiteral("quicklaunch"), plugin_ptr_t{new LXQtQuickLaunchPluginLibrary} },// quicklaunch
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#endif
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#if defined(WITH_SHOWDESKTOP_PLUGIN)
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{ QStringLiteral("showdesktop"), plugin_ptr_t{new ShowDesktopLibrary} },// showdesktop
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#endif
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#if defined(WITH_SPACER_PLUGIN)
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{ QStringLiteral("spacer"), plugin_ptr_t{new SpacerPluginLibrary} },// spacer
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#endif
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#if defined(WITH_STATUSNOTIFIER_PLUGIN)
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{ QStringLiteral("statusnotifier"), plugin_ptr_t{new StatusNotifierLibrary} },// statusnotifier
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#endif
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#if defined(WITH_TASKBAR_PLUGIN)
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{ QStringLiteral("taskbar"), plugin_ptr_t{new LXQtTaskBarPluginLibrary} },// taskbar
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#endif
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#if defined(WITH_TRAY_PLUGIN)
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{ QStringLiteral("tray"), plugin_ptr_t{new LXQtTrayPluginLibrary} },// tray
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#endif
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#if defined(WITH_WORLDCLOCK_PLUGIN)
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{ QStringLiteral("worldclock"), plugin_ptr_t{new LXQtWorldClockLibrary} },// worldclock
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#endif
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};
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static constexpr plugin_pair_t const * const plugins_begin = static_plugins;
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static constexpr plugin_pair_t const * const plugins_end = static_plugins + sizeof (static_plugins) / sizeof (static_plugins[0]);
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struct assert_helper
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{
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assert_helper()
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{
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Q_ASSERT(std::is_sorted(plugins_begin, plugins_end
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, [] (plugin_pair_t const & p1, plugin_pair_t const & p2) -> bool { return p1.first < p2.first; }));
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}
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};
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static assert_helper h;
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}
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ILXQtPanelPluginLibrary const * Plugin::findStaticPlugin(const QString &libraryName)
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{
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// find a static plugin library by name -> binary search
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plugin_pair_t const * plugin = std::lower_bound(plugins_begin, plugins_end, libraryName
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, [] (plugin_pair_t const & plugin, QString const & name) -> bool { return plugin.first < name; });
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if (plugins_end != plugin && libraryName == plugin->first)
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return plugin->second.get();
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return nullptr;
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}
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// load a plugin from a library
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bool Plugin::loadLib(ILXQtPanelPluginLibrary const * pluginLib)
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{
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ILXQtPanelPluginStartupInfo startupInfo;
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startupInfo.settings = mSettings;
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startupInfo.desktopFile = &mDesktopFile;
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startupInfo.lxqtPanel = mPanel;
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mPlugin = pluginLib->instance(startupInfo);
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if (!mPlugin)
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{
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qWarning() << QString("Can't load plugin \"%1\". Plugin can't build ILXQtPanelPlugin.").arg(mPluginLoader->fileName());
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return false;
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}
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mPluginWidget = mPlugin->widget();
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if (mPluginWidget)
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{
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mPluginWidget->setObjectName(mPlugin->themeId());
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}
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this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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return true;
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}
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// load dynamic plugin from a *.so module
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bool Plugin::loadModule(const QString &libraryName)
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{
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mPluginLoader = new QPluginLoader(libraryName);
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if (!mPluginLoader->load())
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{
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qWarning() << mPluginLoader->errorString();
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return false;
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}
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QObject *obj = mPluginLoader->instance();
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if (!obj)
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{
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qWarning() << mPluginLoader->errorString();
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return false;
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}
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ILXQtPanelPluginLibrary* pluginLib= qobject_cast<ILXQtPanelPluginLibrary*>(obj);
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if (!pluginLib)
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{
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qWarning() << QString("Can't load plugin \"%1\". Plugin is not a ILXQtPanelPluginLibrary.").arg(mPluginLoader->fileName());
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delete obj;
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return false;
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}
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return loadLib(pluginLib);
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}
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/************************************************
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************************************************/
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QByteArray Plugin::calcSettingsHash()
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{
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QCryptographicHash hash(QCryptographicHash::Md5);
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QStringList keys = mSettings->allKeys();
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foreach (const QString &key, keys)
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{
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hash.addData(key.toUtf8());
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hash.addData(mSettings->value(key).toByteArray());
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}
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return hash.result();
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}
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/************************************************
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************************************************/
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void Plugin::settingsChanged()
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{
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QByteArray hash = calcSettingsHash();
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if (mSettingsHash != hash)
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{
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mSettingsHash = hash;
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mPlugin->settingsChanged();
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}
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}
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/************************************************
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************************************************/
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void Plugin::saveSettings()
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{
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mSettings->setValue("alignment", (mAlignment == AlignLeft) ? "Left" : "Right");
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mSettings->setValue("type", mDesktopFile.id());
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mSettings->sync();
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}
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/************************************************
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************************************************/
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void Plugin::contextMenuEvent(QContextMenuEvent *event)
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{
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mPanel->showPopupMenu(this);
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}
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/************************************************
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************************************************/
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void Plugin::mousePressEvent(QMouseEvent *event)
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{
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switch (event->button())
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{
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case Qt::LeftButton:
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mPlugin->activated(ILXQtPanelPlugin::Trigger);
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break;
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case Qt::MidButton:
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mPlugin->activated(ILXQtPanelPlugin::MiddleClick);
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break;
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default:
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break;
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}
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}
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/************************************************
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************************************************/
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void Plugin::mouseDoubleClickEvent(QMouseEvent*)
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{
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mPlugin->activated(ILXQtPanelPlugin::DoubleClick);
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}
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/************************************************
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************************************************/
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void Plugin::showEvent(QShowEvent *)
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{
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if (mPluginWidget)
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mPluginWidget->adjustSize();
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}
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/************************************************
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************************************************/
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QMenu *Plugin::popupMenu() const
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{
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QString name = this->name().replace("&", "&&");
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QMenu* menu = new QMenu(windowTitle());
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if (mPlugin->flags().testFlag(ILXQtPanelPlugin::HaveConfigDialog))
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{
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QAction* configAction = new QAction(
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XdgIcon::fromTheme(QStringLiteral("preferences-other")),
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tr("Configure \"%1\"").arg(name), menu);
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menu->addAction(configAction);
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connect(configAction, SIGNAL(triggered()), this, SLOT(showConfigureDialog()));
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}
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QAction* moveAction = new QAction(XdgIcon::fromTheme("transform-move"), tr("Move \"%1\"").arg(name), menu);
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menu->addAction(moveAction);
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connect(moveAction, SIGNAL(triggered()), this, SIGNAL(startMove()));
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menu->addSeparator();
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QAction* removeAction = new QAction(
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XdgIcon::fromTheme(QStringLiteral("list-remove")),
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tr("Remove \"%1\"").arg(name), menu);
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menu->addAction(removeAction);
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connect(removeAction, SIGNAL(triggered()), this, SLOT(requestRemove()));
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return menu;
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}
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/************************************************
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************************************************/
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bool Plugin::isSeparate() const
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{
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return mPlugin->isSeparate();
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}
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/************************************************
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************************************************/
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bool Plugin::isExpandable() const
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{
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return mPlugin->isExpandable();
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}
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/************************************************
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************************************************/
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void Plugin::realign()
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{
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if (mPlugin)
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mPlugin->realign();
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}
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/************************************************
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************************************************/
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void Plugin::showConfigureDialog()
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{
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// store a pointer to each plugin using the plugins' names
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static QHash<QString, QPointer<QDialog> > refs;
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QDialog *dialog = refs[name()].data();
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if (!dialog)
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{
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dialog = mPlugin->configureDialog();
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refs[name()] = dialog;
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connect(this, SIGNAL(destroyed()), dialog, SLOT(close()));
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}
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if (!dialog)
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return;
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dialog->show();
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dialog->raise();
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dialog->activateWindow();
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}
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/************************************************
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************************************************/
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void Plugin::requestRemove()
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{
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emit remove();
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deleteLater();
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}
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