302 lines
8.1 KiB
C++
302 lines
8.1 KiB
C++
/***************************************************************************
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* Copyright 2011 Viranch Mehta <viranch.mehta@gmail.com> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program 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 *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
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***************************************************************************/
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#include "qmenu.h"
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#include <QApplication>
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#include <QDebug>
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#include <QDesktopWidget>
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#include <QGraphicsObject>
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#include <QGraphicsView>
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#include <QDeclarativeItem>
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#include "plasmacomponentsplugin.h"
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QMenuProxy::QMenuProxy (QObject *parent)
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: QObject(parent),
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m_status(DialogStatus::Closed)
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{
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m_menu = new QMenu(0);
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connect(m_menu, SIGNAL(triggered(QAction *)),
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this, SLOT(itemTriggered(QAction *)));
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}
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QMenuProxy::~QMenuProxy()
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{
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delete m_menu;
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}
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QDeclarativeListProperty<QMenuItem> QMenuProxy::content()
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{
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return QDeclarativeListProperty<QMenuItem>(this, m_items);
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}
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int QMenuProxy::actionCount() const
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{
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return m_items.count();
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}
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QMenuItem *QMenuProxy::action(int index) const
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{
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return m_items.at(index);
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}
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DialogStatus::Status QMenuProxy::status() const
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{
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return m_status;
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}
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QObject *QMenuProxy::visualParent() const
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{
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return m_visualParent.data();
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}
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void QMenuProxy::setVisualParent(QObject *parent)
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{
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if (m_visualParent.data() == parent) {
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return;
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}
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//if the old parent was a QAction, disconnect the menu from it
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QAction *action = qobject_cast<QAction *>(m_visualParent.data());
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if (action) {
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action->setMenu(0);
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m_menu->clear();
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}
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//if parent is a QAction, become a submenu
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action = qobject_cast<QAction *>(parent);
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if (action) {
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action->setMenu(m_menu);
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m_menu->clear();
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foreach(QMenuItem* item, m_items) {
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m_menu->addAction(item);
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}
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m_menu->updateGeometry();
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}
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m_visualParent = parent;
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emit visualParentChanged();
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}
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bool QMenuProxy::event(QEvent *event)
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{
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switch (event->type()) {
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case QEvent::ChildAdded: {
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QChildEvent *ce = static_cast<QChildEvent *>(event);
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QMenuItem *mi = qobject_cast<QMenuItem *>(ce->child());
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//FIXME: linear complexity here
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if (mi && !m_items.contains(mi)) {
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m_menu->addAction(mi);
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m_items << mi;
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}
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break;
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}
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case QEvent::ChildRemoved: {
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QChildEvent *ce = static_cast<QChildEvent *>(event);
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QMenuItem *mi = qobject_cast<QMenuItem *>(ce->child());
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//FIXME: linear complexity here
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if (mi) {
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m_menu->removeAction(mi);
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m_items.removeAll(mi);
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}
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break;
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}
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default:
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break;
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}
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return QObject::event(event);
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}
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void QMenuProxy::clearMenuItems()
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{
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qDeleteAll(m_items);
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m_items.clear();
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}
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void QMenuProxy::addMenuItem(const QString &text)
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{
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QMenuItem *item = new QMenuItem(this);
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item->setText(text);
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m_menu->addAction(item);
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m_items << item;
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}
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void QMenuProxy::addMenuItem(QMenuItem *item)
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{
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m_menu->addAction(item);
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m_items << item;
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}
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void QMenuProxy::itemTriggered(QAction *action)
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{
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QMenuItem *item = qobject_cast<QMenuItem *>(action);
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if (item) {
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emit triggered(item);
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int index = m_items.indexOf(item);
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if (index > -1) {
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emit triggeredIndex(index);
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}
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}
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}
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void QMenuProxy::open(int x, int y)
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{
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m_menu->clear();
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foreach(QMenuItem* item, m_items) {
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m_menu->addAction (item);
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}
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QPoint screenPos;
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QGraphicsObject *parentItem;
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if (m_visualParent) {
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parentItem = qobject_cast<QGraphicsObject *>(m_visualParent.data());
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} else {
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parentItem = qobject_cast<QGraphicsObject *>(parent());
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}
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if (!parentItem || !parentItem->scene()) {
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m_menu->popup(QPoint(0, 0));
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m_status = DialogStatus::Open;
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emit statusChanged();
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return;
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}
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QList<QGraphicsView*> views = parentItem->scene()->views();
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if (views.size() < 1) {
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m_menu->popup(QPoint(0, 0));
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m_status = DialogStatus::Open;
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emit statusChanged();
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return;
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}
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QGraphicsView *view = 0;
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if (views.size() == 1) {
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view = views[0];
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} else {
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QGraphicsView *found = 0;
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QGraphicsView *possibleFind = 0;
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foreach (QGraphicsView *v, views) {
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if (v->sceneRect().intersects(parentItem->sceneBoundingRect()) ||
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v->sceneRect().contains(parentItem->scenePos())) {
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if (v->isActiveWindow()) {
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found = v;
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} else {
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possibleFind = v;
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}
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}
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}
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view = found ? found : possibleFind;
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}
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if (view) {
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screenPos = view->mapToGlobal(view->mapFromScene(parentItem->scenePos()+ QPoint(x, y)));
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} else {
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screenPos = QApplication::activeWindow()->mapToGlobal(QPoint(x, y));
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}
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m_menu->popup(screenPos);
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m_status = DialogStatus::Open;
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emit statusChanged();
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}
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void QMenuProxy::open()
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{
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m_menu->clear();
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foreach(QMenuItem* item, m_items) {
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m_menu->addAction (item);
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}
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m_menu->updateGeometry();
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QGraphicsObject *parentItem;
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if (m_visualParent) {
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parentItem = qobject_cast<QGraphicsObject *>(m_visualParent.data());
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} else {
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parentItem = qobject_cast<QGraphicsObject *>(parent());
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}
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if (!parentItem || !parentItem->scene()) {
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m_menu->popup(QPoint(0, 0));
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m_status = DialogStatus::Open;
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emit statusChanged();
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return;
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}
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QList<QGraphicsView*> views = parentItem->scene()->views();
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if (views.size() < 1) {
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m_menu->popup(QPoint(0, 0));
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m_status = DialogStatus::Open;
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emit statusChanged();
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return;
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}
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QGraphicsView *view = 0;
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if (views.size() == 1) {
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view = views[0];
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} else {
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QGraphicsView *found = 0;
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QGraphicsView *possibleFind = 0;
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foreach (QGraphicsView *v, views) {
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if (v->sceneRect().intersects(parentItem->sceneBoundingRect()) ||
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v->sceneRect().contains(parentItem->scenePos())) {
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if (v->isActiveWindow()) {
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found = v;
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} else {
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possibleFind = v;
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}
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}
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}
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view = found ? found : possibleFind;
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}
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if (!view) {
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m_menu->popup(QPoint(0, 0));
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m_status = DialogStatus::Open;
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emit statusChanged();
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return;
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}
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const QRect avail = QApplication::desktop()->availableGeometry(view);
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QPoint menuPos = view->mapToGlobal(view->mapFromScene(parentItem->scenePos()+QPoint(0, parentItem->boundingRect().height())));
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if (menuPos.y() + m_menu->sizeHint().height() > avail.bottom()) {
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menuPos = view->mapToGlobal(view->mapFromScene(parentItem->scenePos() - QPoint(0, m_menu->sizeHint().height())));
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}
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m_menu->popup(menuPos);
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m_status = DialogStatus::Open;
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emit statusChanged();
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}
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void QMenuProxy::close()
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{
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m_menu->hide();
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m_status = DialogStatus::Closed;
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emit statusChanged();
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}
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#include "qmenu.moc"
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