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lxqt-panel-packaging/plugin-mainmenu/lxqtmainmenu.cpp

334 lines
9.5 KiB

/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXDE-Qt - a lightweight, Qt based, desktop toolset
* http://razor-qt.org
*
* Copyright: 2010-2011 Razor team
* Authors:
* Alexander Sokoloff <sokoloff.a@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include "lxqtmainmenu.h"
#include "lxqtmainmenuconfiguration.h"
#include "../panel/lxqtpanel.h"
#include <QDebug>
#include <XdgDesktopFile>
#include <XmlHelper>
#include <QSettings>
#include <QFileInfo>
#include <QAction>
#include <QTimer>
#include <QMessageBox>
#include <QEvent>
#include <QKeyEvent>
#include <LXQt/PowerManager>
#include <LXQt/ScreenSaver>
#include <lxqt-globalkeys.h>
#include <algorithm> // for find_if()
#include <KWindowSystem/KWindowSystem>
#include <XdgIcon>
#include <XdgDesktopFile>
#include <XdgMenuWidget>
#ifdef HAVE_MENU_CACHE
#include "xdgcachedmenu.h"
#endif
#include <QPixmap>
#include <QStack>
#include <QCursor>
#define DEFAULT_SHORTCUT "Alt+F1"
LXQtMainMenu::LXQtMainMenu(const ILXQtPanelPluginStartupInfo &startupInfo):
QObject(),
ILXQtPanelPlugin(startupInfo),
mMenu(0),
mShortcut(0)
{
#ifdef HAVE_MENU_CACHE
mMenuCache = NULL;
mMenuCacheNotify = 0;
#endif
mDelayedPopup.setSingleShot(true);
mDelayedPopup.setInterval(250);
connect(&mDelayedPopup, &QTimer::timeout, this, &LXQtMainMenu::showHideMenu);
mHideTimer.setSingleShot(true);
mHideTimer.setInterval(250);
mButton.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
mButton.installEventFilter(this);
connect(&mButton, &QToolButton::clicked, this, &LXQtMainMenu::showHideMenu);
settingsChanged();
mShortcut = GlobalKeyShortcut::Client::instance()->addAction(QString{}, QString("/panel/%1/show_hide").arg(settings()->group()), tr("Show/hide main menu"), this);
if (mShortcut)
{
connect(mShortcut, &GlobalKeyShortcut::Action::registrationFinished, [this] {
if (mShortcut->shortcut().isEmpty())
mShortcut->changeShortcut(DEFAULT_SHORTCUT);
});
connect(mShortcut, &GlobalKeyShortcut::Action::activated, [this] { if (!mHideTimer.isActive()) mDelayedPopup.start(); });
}
}
/************************************************
************************************************/
LXQtMainMenu::~LXQtMainMenu()
{
mButton.removeEventFilter(this);
#ifdef HAVE_MENU_CACHE
if(mMenuCache)
{
menu_cache_remove_reload_notify(mMenuCache, mMenuCacheNotify);
menu_cache_unref(mMenuCache);
}
#endif
}
/************************************************
************************************************/
void LXQtMainMenu::showHideMenu()
{
if (mMenu && mMenu->isVisible())
mMenu->hide();
else
showMenu();
}
/************************************************
************************************************/
void LXQtMainMenu::showMenu()
{
if (!mMenu)
return;
// Just using Qt`s activateWindow() won't work on some WMs like Kwin.
// Solution is to execute menu 1ms later using timer
mMenu->popup(calculatePopupWindowPos(mMenu->sizeHint()).topLeft());
}
#ifdef HAVE_MENU_CACHE
// static
void LXQtMainMenu::menuCacheReloadNotify(MenuCache* cache, gpointer user_data)
{
reinterpret_cast<LXQtMainMenu*>(user_data)->buildMenu();
}
#endif
/************************************************
************************************************/
void LXQtMainMenu::settingsChanged()
{
if (settings()->value("showText", false).toBool())
{
mButton.setText(settings()->value("text", "Start").toString());
mButton.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
}
else
{
mButton.setText("");
mButton.setToolButtonStyle(Qt::ToolButtonIconOnly);
}
mLogDir = settings()->value("log_dir", "").toString();
QString menu_file = settings()->value("menu_file", "").toString();
if (menu_file.isEmpty())
menu_file = XdgMenu::getMenuFileName();
if (mMenuFile != menu_file)
{
mMenuFile = menu_file;
#ifdef HAVE_MENU_CACHE
menu_cache_init(0);
if(mMenuCache)
{
menu_cache_remove_reload_notify(mMenuCache, mMenuCacheNotify);
menu_cache_unref(mMenuCache);
}
mMenuCache = menu_cache_lookup(mMenuFile.toLocal8Bit());
if (menu_cache_get_root_dir(mMenuCache))
buildMenu();
mMenuCacheNotify = menu_cache_add_reload_notify(mMenuCache, (MenuCacheReloadNotify)menuCacheReloadNotify, this);
#else
mXdgMenu.setEnvironments(QStringList() << "X-LXQT" << "LXQt");
mXdgMenu.setLogDir(mLogDir);
bool res = mXdgMenu.read(mMenuFile);
connect(&mXdgMenu, SIGNAL(changed()), this, SLOT(buildMenu()));
if (res)
{
QTimer::singleShot(1000, this, SLOT(buildMenu()));
}
else
{
QMessageBox::warning(0, "Parse error", mXdgMenu.errorString());
return;
}
#endif
}
setMenuFontSize();
realign();
}
/************************************************
************************************************/
void LXQtMainMenu::buildMenu()
{
#ifdef HAVE_MENU_CACHE
XdgCachedMenu* menu = new XdgCachedMenu(mMenuCache, &mButton);
#else
XdgMenuWidget *menu = new XdgMenuWidget(mXdgMenu, "", &mButton);
#endif
menu->setObjectName("TopLevelMainMenu");
menu->setStyle(&mTopMenuStyle);
menu->addSeparator();
Q_FOREACH(QAction* action, menu->actions())
{
if (action->menu())
action->menu()->installEventFilter(this);
}
menu->installEventFilter(this);
connect(menu, &QMenu::aboutToHide, &mHideTimer, static_cast<void (QTimer::*)()>(&QTimer::start));
connect(menu, &QMenu::aboutToShow, &mHideTimer, &QTimer::stop);
// panel notification (needed in case of auto-hide)
connect(menu, &QMenu::aboutToHide, dynamic_cast<LXQtPanel *>(panel()), &LXQtPanel::hidePanel);
QMenu *oldMenu = mMenu;
mMenu = menu;
if(oldMenu)
delete oldMenu;
setMenuFontSize();
}
/************************************************
************************************************/
void LXQtMainMenu::setMenuFontSize()
{
if (!mMenu)
return;
QFont menuFont = mButton.font();
if(settings()->value("customFont", false).toBool())
{
menuFont = mMenu->font();
menuFont.setPointSize(settings()->value("customFontSize").toInt());
}
if (mMenu->font() != menuFont)
{
mMenu->setFont(menuFont);
QList<QMenu*> subMenuList = mMenu->findChildren<QMenu*>();
foreach (QMenu* subMenu, subMenuList)
{
subMenu->setFont(menuFont);
}
}
//icon size the same as the font height
mTopMenuStyle.setIconSize(QFontMetrics(menuFont).height());
}
/************************************************
************************************************/
QDialog *LXQtMainMenu::configureDialog()
{
return new LXQtMainMenuConfiguration(*settings(), mShortcut, DEFAULT_SHORTCUT);
}
/************************************************
************************************************/
// functor used to match a QAction by prefix
struct MatchAction
{
MatchAction(QString key):key_(key) {}
bool operator()(QAction* action) { return action->text().startsWith(key_, Qt::CaseInsensitive); }
QString key_;
};
bool LXQtMainMenu::eventFilter(QObject *obj, QEvent *event)
{
if(obj == &mButton)
{
// the application is given a new QStyle
if(event->type() == QEvent::StyleChange)
{
// reset proxy style for the menus so they can apply the new styles
mTopMenuStyle.setBaseStyle(NULL);
setMenuFontSize();
}
}
else if(QMenu* menu = qobject_cast<QMenu*>(obj))
{
if(event->type() == QEvent::KeyPress)
{
// if our shortcut key is pressed while the menu is open, close the menu
QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
if (keyEvent->modifiers() & ~Qt::ShiftModifier)
{
mHideTimer.start();
mMenu->hide(); // close the app menu
return true;
}
else // go to the menu item starts with the pressed key
{
QString key = keyEvent->text();
if(key.isEmpty())
return false;
QAction* action = menu->activeAction();
QList<QAction*> actions = menu->actions();
QList<QAction*>::iterator it = qFind(actions.begin(), actions.end(), action);
it = std::find_if(it + 1, actions.end(), MatchAction(key));
if(it == actions.end())
it = std::find_if(actions.begin(), it, MatchAction(key));
if(it != actions.end())
menu->setActiveAction(*it);
}
}
}
return false;
}
#undef DEFAULT_SHORTCUT