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libqtxdg-packaging/xdgmenuwidget.cpp

242 lines
5.7 KiB

/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* Razor - 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 "xdgmenuwidget.h"
#include "xdgicon.h"
#include "xmlhelper.h"
#include "xdgaction.h"
#include "xdgmenu.h"
#include <QEvent>
#include <QDebug>
#include <QUrl>
#include <QMimeData>
#include <QtGui/QDrag>
#include <QtGui/QMouseEvent>
#include <QApplication>
class XdgMenuWidgetPrivate
{
private:
XdgMenuWidget* const q_ptr;
Q_DECLARE_PUBLIC(XdgMenuWidget);
public:
explicit XdgMenuWidgetPrivate(XdgMenuWidget* parent):
q_ptr(parent)
{}
void init(const QDomElement& xml);
void buildMenu();
QDomElement mXml;
void mouseMoveEvent(QMouseEvent *event);
QPoint mDragStartPosition;
private:
XdgAction* createAction(const QDomElement& xml);
static QString escape(QString string);
};
XdgMenuWidget::XdgMenuWidget(const XdgMenu& xdgMenu, const QString& title, QWidget* parent):
QMenu(parent),
d_ptr(new XdgMenuWidgetPrivate(this))
{
d_ptr->init(xdgMenu.xml().documentElement());
setTitle(XdgMenuWidgetPrivate::escape(title));
}
XdgMenuWidget::XdgMenuWidget(const QDomElement& menuElement, QWidget* parent):
QMenu(parent),
d_ptr(new XdgMenuWidgetPrivate(this))
{
d_ptr->init(menuElement);
}
XdgMenuWidget::XdgMenuWidget(const XdgMenuWidget& other, QWidget* parent):
QMenu(parent),
d_ptr(new XdgMenuWidgetPrivate(this))
{
d_ptr->init(other.d_ptr->mXml);
}
void XdgMenuWidgetPrivate::init(const QDomElement& xml)
{
Q_Q(XdgMenuWidget);
mXml = xml;
q->clear();
QString title;
if (! xml.attribute("title").isEmpty())
title = xml.attribute("title");
else
title = xml.attribute("name");
q->setTitle(escape(title));
q->setToolTip(xml.attribute("comment"));
QIcon parentIcon;
QMenu* parentMenu = qobject_cast<QMenu*>(q->parent());
if (parentMenu)
parentIcon = parentMenu->icon();
q->setIcon(XdgIcon::fromTheme(mXml.attribute("icon"), parentIcon));
buildMenu();
}
XdgMenuWidget::~XdgMenuWidget()
{
delete d_ptr;
}
XdgMenuWidget& XdgMenuWidget::operator=(const XdgMenuWidget& other)
{
Q_D(XdgMenuWidget);
d->init(other.d_ptr->mXml);
return *this;
}
bool XdgMenuWidget::event(QEvent* event)
{
Q_D(XdgMenuWidget);
if (event->type() == QEvent::MouseButtonPress)
{
QMouseEvent *e = static_cast<QMouseEvent*>(event);
if (e->button() == Qt::LeftButton)
d->mDragStartPosition = e->pos();
}
else if (event->type() == QEvent::MouseMove)
{
QMouseEvent *e = static_cast<QMouseEvent*>(event);
d->mouseMoveEvent(e);
}
return QMenu::event(event);
}
void XdgMenuWidgetPrivate::mouseMoveEvent(QMouseEvent *event)
{
if (!(event->buttons() & Qt::LeftButton))
return;
if ((event->pos() - mDragStartPosition).manhattanLength() < QApplication::startDragDistance())
return;
Q_Q(XdgMenuWidget);
XdgAction *a = qobject_cast<XdgAction*>(q->actionAt(event->pos()));
if (!a)
return;
QList<QUrl> urls;
urls << QUrl(a->desktopFile().fileName());
QMimeData *mimeData = new QMimeData();
mimeData->setUrls(urls);
QDrag *drag = new QDrag(q);
drag->setMimeData(mimeData);
drag->exec(Qt::CopyAction | Qt::LinkAction);
}
void XdgMenuWidgetPrivate::buildMenu()
{
Q_Q(XdgMenuWidget);
QAction* first = 0;
if (!q->actions().isEmpty())
first = q->actions().last();
DomElementIterator it(mXml, QString());
while(it.hasNext())
{
QDomElement xml = it.next();
// Build submenu ........................
if (xml.tagName() == "Menu")
q->insertMenu(first, new XdgMenuWidget(xml, q));
//Build application link ................
else if (xml.tagName() == "AppLink")
q->insertAction(first, createAction(xml));
//Build separator .......................
else if (xml.tagName() == "Separator")
q->insertSeparator(first);
}
}
XdgAction* XdgMenuWidgetPrivate::createAction(const QDomElement& xml)
{
Q_Q(XdgMenuWidget);
XdgAction* action = new XdgAction(xml.attribute("desktopFile"), q);
QString title;
if (!xml.attribute("title").isEmpty())
title = xml.attribute("title");
else
title = xml.attribute("name");
if (!xml.attribute("genericName").isEmpty() &&
xml.attribute("genericName") != title)
title += QString(" (%1)").arg(xml.attribute("genericName"));
action->setText(escape(title));
return action;
}
/************************************************
This should be used when a menu item text is set
otherwise Qt uses the &'s for creating mnemonics
************************************************/
QString XdgMenuWidgetPrivate::escape(QString string)
{
return string.replace("&", "&&");
}