plasma-framework/declarativeimports/core/dialog.cpp
2012-01-01 20:04:35 +01:00

432 lines
12 KiB
C++

/***************************************************************************
* Copyright 2011 Marco Martin <mart@kde.org> *
* *
* 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 2 of the License, or *
* (at your option) 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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
***************************************************************************/
#include "dialog.h"
#include "declarativeitemcontainer_p.h"
#include <QApplication>
#include <QDeclarativeItem>
#include <QDesktopWidget>
#include <QGraphicsObject>
#include <QGraphicsWidget>
#include <QTimer>
#include <QLayout>
#include <Plasma/Corona>
#include <Plasma/Dialog>
#include <Plasma/WindowEffects>
int DialogProxy::offscreenX = 0;
int DialogProxy::offscreenY = 0;
DialogMargins::DialogMargins(Plasma::Dialog *dialog, QObject *parent)
: QObject(parent),
m_dialog(dialog)
{
checkMargins();
}
void DialogMargins::checkMargins()
{
int left, top, right, bottom;
m_dialog->getContentsMargins(&left, &top, &right, &bottom);
if (left != m_left) {
m_left = left;
emit leftChanged();
}
if (top != m_top) {
m_top = top;
emit topChanged();
}
if (right != m_right) {
m_right = right;
emit rightChanged();
}
if (bottom != m_bottom) {
m_bottom = bottom;
emit bottomChanged();
}
}
int DialogMargins::left() const
{
return m_left;
}
int DialogMargins::top() const
{
return m_top;
}
int DialogMargins::right() const
{
return m_right;
}
int DialogMargins::bottom() const
{
return m_bottom;
}
DialogProxy::DialogProxy(QObject *parent)
: QObject(parent),
m_declarativeItemContainer(0),
m_activeWindow(false),
m_location(Plasma::Floating)
{
m_dialog = new Plasma::Dialog();
m_margins = new DialogMargins(m_dialog, this);
m_dialog->installEventFilter(this);
m_flags = m_dialog->windowFlags();
}
DialogProxy::~DialogProxy()
{
delete m_declarativeItemContainer;
delete m_dialog;
}
QGraphicsObject *DialogProxy::mainItem() const
{
return m_mainItem.data();
}
void DialogProxy::setMainItem(QGraphicsObject *mainItem)
{
if (m_mainItem.data() != mainItem) {
if (m_mainItem) {
m_mainItem.data()->setParent(mainItem ? mainItem->parent() : 0);
}
m_mainItem = mainItem;
if (mainItem) {
mainItem->setParentItem(0);
mainItem->setParent(this);
}
//if this is called in Compenent.onCompleted we have to wait a loop the item is added to a scene
QTimer::singleShot(0, this, SLOT(syncMainItem()));
emit mainItemChanged();
}
}
void DialogProxy::syncMainItem()
{
if (!m_mainItem) {
return;
}
if (static_cast<QGraphicsObject *>(m_dialog->graphicsWidget()) == m_mainItem.data() ||
(m_declarativeItemContainer && m_declarativeItemContainer->declarativeItem() == m_mainItem.data())) {
return;
}
//not have a scene? go up in the hyerarchy until we find something with a scene
QGraphicsScene *scene = m_mainItem.data()->scene();
if (!scene) {
QObject *parent = m_mainItem.data();
while ((parent = parent->parent())) {
QGraphicsObject *qo = qobject_cast<QGraphicsObject *>(parent);
if (qo) {
scene = qo->scene();
if (scene) {
scene->addItem(m_mainItem.data());
break;
}
}
}
}
if (!scene) {
return;
}
//the parent of the qobject never changed, only the parentitem, so put it back what it was
m_mainItem.data()->setParentItem(qobject_cast<QGraphicsObject *>(m_mainItem.data()->parent()));
QGraphicsWidget *widget = qobject_cast<QGraphicsWidget *>(m_mainItem.data());
if (widget) {
if (m_declarativeItemContainer) {
m_declarativeItemContainer->deleteLater();
m_declarativeItemContainer = 0;
}
} else {
QDeclarativeItem *di = qobject_cast<QDeclarativeItem *>(m_mainItem.data());
if (di) {
if (!m_declarativeItemContainer) {
m_declarativeItemContainer = new DeclarativeItemContainer();
scene->addItem(m_declarativeItemContainer);
}
m_declarativeItemContainer->setDeclarativeItem(di);
widget = m_declarativeItemContainer;
}
}
m_dialog->setGraphicsWidget(widget);
if (!qobject_cast<Plasma::Corona *>(scene)) {
offscreenX -= 10000;
offscreenY -= 10000;
widget->setPos(offscreenX, offscreenY);
}
}
bool DialogProxy::isVisible() const
{
return m_dialog->isVisible();
}
void DialogProxy::setVisible(const bool visible)
{
if (m_dialog->isVisible() != visible) {
m_dialog->setVisible(visible);
if (visible) {
m_dialog->setVisible(visible);
m_dialog->raise();
}
}
}
QPoint DialogProxy::popupPosition(QGraphicsObject *item, int alignment)
{
QGraphicsObject *actualItem = item;
//if no item is passed search the root item in order to figure out the view
if (!actualItem) {
actualItem = qobject_cast<QGraphicsObject *>(parent());
//search the root object
while (true) {
QGraphicsObject *ancestor = qobject_cast<QGraphicsObject *>(actualItem->parent());
if (ancestor) {
actualItem = ancestor;
} else {
break;
}
}
if (!actualItem) {
return QPoint();
}
}
//ensure the dialog has the proper size
syncMainItem();
m_dialog->syncToGraphicsWidget();
Plasma::Corona *corona = qobject_cast<Plasma::Corona *>(actualItem->scene());
if (corona && item) {
return corona->popupPosition(actualItem, m_dialog->size(), (Qt::AlignmentFlag)alignment);
} else {
if (!actualItem->scene()) {
return QPoint();
}
QList<QGraphicsView*> views = actualItem->scene()->views();
if (views.size() < 1) {
return QPoint();
}
QGraphicsView *view = 0;
if (views.size() == 1) {
view = views[0];
} else {
QGraphicsView *found = 0;
QGraphicsView *possibleFind = 0;
foreach (QGraphicsView *v, views) {
if (v->sceneRect().intersects(actualItem->sceneBoundingRect()) ||
v->sceneRect().contains(actualItem->scenePos())) {
if (v->isActiveWindow()) {
found = v;
} else {
possibleFind = v;
}
}
}
view = found ? found : possibleFind;
}
if (!view) {
return QPoint();
}
//if no item was explicitly specified, align the dialog in the center of the parent view
if (!item) {
return view->geometry().center() - QPoint(m_dialog->width()/2, m_dialog->height()/2);
}
//swap direction if necessary
if (QApplication::isRightToLeft() && alignment != Qt::AlignCenter) {
if (alignment == Qt::AlignRight) {
alignment = Qt::AlignLeft;
} else {
alignment = Qt::AlignRight;
}
}
int xOffset = 0;
if (alignment == Qt::AlignCenter) {
xOffset = actualItem->boundingRect().width()/2 - m_dialog->width()/2;
} else if (alignment == Qt::AlignRight) {
xOffset = actualItem->boundingRect().width() - m_dialog->width();
}
const QRect avail = QApplication::desktop()->availableGeometry(view);
QPoint menuPos = view->mapToGlobal(view->mapFromScene(actualItem->scenePos()+QPoint(xOffset, actualItem->boundingRect().height())));
if (menuPos.y() + m_dialog->height() > avail.bottom()) {
menuPos = view->mapToGlobal(view->mapFromScene(actualItem->scenePos() - QPoint(-xOffset, m_dialog->height())));
}
return menuPos;
}
}
int DialogProxy::x() const
{
return m_dialog->pos().x();
}
void DialogProxy::setX(int x)
{
m_dialog->move(x, m_dialog->pos().y());
}
int DialogProxy::y() const
{
return m_dialog->pos().y();
}
void DialogProxy::setY(int y)
{
m_dialog->move(m_dialog->pos().x(), y);
}
int DialogProxy::width() const
{
return m_dialog->size().width();
}
int DialogProxy::height() const
{
return m_dialog->size().height();
}
bool DialogProxy::isActiveWindow() const
{
return m_activeWindow;
}
void DialogProxy::activateWindow()
{
m_dialog->activateWindow();
}
int DialogProxy::windowFlags() const
{
return (int)m_flags;
}
void DialogProxy::setWindowFlags(const int flags)
{
/*X misbehaviour: the only way to make a window with the Popup flag working, is to create it with that flag from the beginning*/
if (((Qt::WindowFlags)flags & Qt::Popup) != (m_flags & Qt::Popup)) {
delete m_dialog;
m_flags = (Qt::WindowFlags)flags;
m_dialog = new Plasma::Dialog(0, Qt::FramelessWindowHint|m_flags);
m_margins = new DialogMargins(m_dialog, this);
m_dialog->installEventFilter(this);
} else {
m_flags = (Qt::WindowFlags)flags;
m_dialog->setWindowFlags(Qt::FramelessWindowHint|m_flags);
}
}
int DialogProxy::location() const
{
return (int)m_location;
}
void DialogProxy::setLocation(int location)
{
if (m_location == location) {
return;
}
m_location = (Plasma::Location)location;
emit locationChanged();
}
QObject *DialogProxy::margins() const
{
return m_margins;
}
bool DialogProxy::eventFilter(QObject *watched, QEvent *event)
{
if (watched == m_dialog && event->type() == QEvent::Move) {
QMoveEvent *me = static_cast<QMoveEvent *>(event);
if (me->oldPos().x() != me->pos().x()) {
emit xChanged();
}
if (me->oldPos().y() != me->pos().y()) {
emit yChanged();
}
if ((me->oldPos().x() != me->pos().x()) || (me->oldPos().y() != me->pos().y())) {
m_margins->checkMargins();
}
} else if (watched == m_dialog && event->type() == QEvent::Resize) {
QResizeEvent *re = static_cast<QResizeEvent *>(event);
if (re->oldSize().width() != re->size().width()) {
emit widthChanged();
}
if (re->oldSize().height() != re->size().height()) {
emit heightChanged();
}
} else if (watched == m_dialog && event->type() == QEvent::Show) {
Plasma::WindowEffects::slideWindow(m_dialog, m_location);
emit visibleChanged();
} else if (watched == m_dialog && event->type() == QEvent::Hide) {
Plasma::WindowEffects::slideWindow(m_dialog, m_location);
emit visibleChanged();
} else if (watched == m_dialog && event->type() == QEvent::WindowActivate) {
m_activeWindow = true;
emit activeWindowChanged();
} else if (watched == m_dialog && event->type() == QEvent::WindowDeactivate) {
m_activeWindow = false;
emit activeWindowChanged();
}
return false;
}
void DialogProxy::setAttribute(int attribute, bool on)
{
m_dialog->setAttribute((Qt::WidgetAttribute)attribute, on);
}
#include "dialog.moc"