зеркало из https://github.com/mozilla/pjs.git
351 строка
9.5 KiB
C++
351 строка
9.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim: set ts=4 et sw=4 tw=80: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Nokia.
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*
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* The Initial Developer of the Original Code is Nokia Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef MOZIQWIDGET_H
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#define MOZIQWIDGET_H
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#include <QApplication>
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#include <QGraphicsWidget>
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#include <QGraphicsView>
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#include <QtOpenGL/QGLWidget>
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#include "nsCOMPtr.h"
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#ifdef MOZ_ENABLE_MEEGOTOUCH
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#include <MSceneWindow>
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#include <MInputMethodState>
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#include <QtGui/QGraphicsSceneResizeEvent>
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#include <QTimer>
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#endif
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class nsWindow;
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class IMozQWidget : public QGraphicsWidget
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{
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Q_OBJECT
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public:
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/**
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* Mozilla helper.
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*/
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virtual void setModal(bool) {}
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virtual void dropReceiver() { };
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virtual nsWindow* getReceiver() { return NULL; };
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virtual void activate() {}
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virtual void deactivate() {}
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/**
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* VirtualKeyboardIntegration
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*/
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virtual bool isVKBOpen() { return false; }
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virtual void NotifyVKB(const QRect& rect) {}
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virtual void SwitchToForeground() {}
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virtual void SwitchToBackground() {}
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};
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class MozQGraphicsViewEvents
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{
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public:
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MozQGraphicsViewEvents(QGraphicsView* aView)
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: mView(aView)
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{ }
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void handleEvent(QEvent* aEvent, IMozQWidget* aTopLevel)
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{
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if (!aEvent)
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return;
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if (aEvent->type() == QEvent::WindowActivate) {
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if (aTopLevel)
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aTopLevel->activate();
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}
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if (aEvent->type() == QEvent::WindowDeactivate) {
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if (aTopLevel)
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aTopLevel->deactivate();
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}
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}
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void handleResizeEvent(QResizeEvent* aEvent, IMozQWidget* aTopLevel)
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{
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if (!aEvent)
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return;
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if (aTopLevel) {
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// transfer new size to graphics widget
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aTopLevel->setGeometry(0.0, 0.0,
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static_cast<qreal>(aEvent->size().width()),
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static_cast<qreal>(aEvent->size().height()));
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// resize scene rect to vieport size,
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// to avoid extra scrolling from QAbstractScrollable
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if (mView)
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mView->setSceneRect(mView->viewport()->rect());
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}
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}
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bool handleCloseEvent(QCloseEvent* aEvent, IMozQWidget* aTopLevel)
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{
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if (!aEvent)
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return false;
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if (aTopLevel) {
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// close graphics widget instead, this view will be discarded
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// automatically
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QApplication::postEvent(aTopLevel, new QCloseEvent(*aEvent));
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aEvent->ignore();
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return true;
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}
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return false;
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}
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private:
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QGraphicsView* mView;
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};
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/**
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This is a helper class to synchronize the QGraphicsView window with
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its contained QGraphicsWidget for things like resizing and closing
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by the user.
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*/
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class MozQGraphicsView : public QGraphicsView
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{
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Q_OBJECT
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public:
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MozQGraphicsView(QWidget * aParent = nsnull)
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: QGraphicsView (new QGraphicsScene(), aParent)
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, mEventHandler(this)
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, mTopLevelWidget(NULL)
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, mGLWidget(0)
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{
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setMouseTracking(true);
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setFrameShape(QFrame::NoFrame);
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}
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void SetTopLevel(IMozQWidget* aTopLevel, QWidget* aParent)
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{
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scene()->addItem(aTopLevel);
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mTopLevelWidget = aTopLevel;
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}
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void setGLWidgetEnabled(bool aEnabled)
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{
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if (aEnabled) {
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mGLWidget = new QGLWidget();
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setViewport(mGLWidget);
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} else {
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delete mGLWidget;
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mGLWidget = 0;
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setViewport(new QWidget());
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}
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}
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protected:
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virtual bool event(QEvent* aEvent)
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{
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mEventHandler.handleEvent(aEvent, mTopLevelWidget);
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return QGraphicsView::event(aEvent);
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}
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virtual void resizeEvent(QResizeEvent* aEvent)
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{
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mEventHandler.handleResizeEvent(aEvent, mTopLevelWidget);
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QGraphicsView::resizeEvent(aEvent);
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}
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virtual void closeEvent (QCloseEvent* aEvent)
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{
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if (!mEventHandler.handleCloseEvent(aEvent, mTopLevelWidget))
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QGraphicsView::closeEvent(aEvent);
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}
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virtual void paintEvent(QPaintEvent* aEvent)
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{
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if (mGLWidget) {
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mGLWidget->makeCurrent();
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}
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QGraphicsView::paintEvent(aEvent);
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}
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private:
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MozQGraphicsViewEvents mEventHandler;
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IMozQWidget* mTopLevelWidget;
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QGLWidget* mGLWidget;
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};
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#ifdef MOZ_ENABLE_MEEGOTOUCH
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class MozMSceneWindow : public MSceneWindow
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{
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Q_OBJECT
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public:
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MozMSceneWindow(IMozQWidget* aTopLevel)
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: MSceneWindow(aTopLevel->parentItem())
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, mTopLevelWidget(aTopLevel)
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{
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MInputMethodState* inputMethodState = MInputMethodState::instance();
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if (inputMethodState) {
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connect(inputMethodState, SIGNAL(inputMethodAreaChanged(const QRect&)),
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this, SLOT(VisibleScreenAreaChanged(const QRect&)));
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}
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}
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void SetTopLevel(IMozQWidget* aTopLevel)
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{
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mTopLevelWidget = aTopLevel;
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mTopLevelWidget->setParentItem(this);
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mTopLevelWidget->installEventFilter(this);
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}
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protected:
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virtual void resizeEvent(QGraphicsSceneResizeEvent* aEvent)
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{
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mCurrentSize = aEvent->newSize();
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MSceneWindow::resizeEvent(aEvent);
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CheckTopLevelSize();
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}
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virtual bool eventFilter(QObject* watched, QEvent* e)
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{
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if (e->type() == QEvent::GraphicsSceneResize ||
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e->type() == QEvent::GraphicsSceneMove) {
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//Do this in next event loop, or we are in recursion!
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QTimer::singleShot(0, this, SLOT(CheckTopLevelSize()));
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}
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return false;
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}
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private slots:
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void CheckTopLevelSize()
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{
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if (mTopLevelWidget) {
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qreal xpos = 0;
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qreal ypos = 0;
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qreal width = mCurrentSize.width();
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qreal height = mCurrentSize.height();
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// transfer new size to graphics widget if changed
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QRectF r = mTopLevelWidget->geometry();
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if (r != QRectF(xpos, ypos, width, height)) {
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mTopLevelWidget->setGeometry(xpos, ypos, width, height);
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}
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}
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}
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void VisibleScreenAreaChanged(const QRect& rect) {
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if (mTopLevelWidget) {
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mTopLevelWidget->NotifyVKB(rect);
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}
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}
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private:
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IMozQWidget* mTopLevelWidget;
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QSizeF mCurrentSize;
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};
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/**
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This is a helper class to synchronize the MWindow window with
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its contained QGraphicsWidget for things like resizing and closing
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by the user.
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*/
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class MozMGraphicsView : public MWindow
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{
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Q_OBJECT
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public:
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MozMGraphicsView(QWidget* aParent = nsnull)
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: MWindow(aParent)
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, mEventHandler(this)
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, mTopLevelWidget(NULL)
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, mSceneWin(NULL)
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{
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QObject::connect(this, SIGNAL(switcherEntered()), this, SLOT(onSwitcherEntered()));
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QObject::connect(this, SIGNAL(switcherExited()), this, SLOT(onSwitcherExited()));
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setFrameShape(QFrame::NoFrame);
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}
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void SetTopLevel(IMozQWidget* aTopLevel, QWidget* aParent)
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{
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if (!mSceneWin) {
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mSceneWin = new MozMSceneWindow(aTopLevel);
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mSceneWin->appear(this);
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}
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mSceneWin->SetTopLevel(aTopLevel);
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mTopLevelWidget = aTopLevel;
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}
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public Q_SLOTS:
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void onSwitcherEntered() {
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if (mTopLevelWidget) {
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mTopLevelWidget->SwitchToBackground();
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}
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}
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void onSwitcherExited() {
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if (mTopLevelWidget) {
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mTopLevelWidget->SwitchToForeground();
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}
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}
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protected:
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virtual bool event(QEvent* aEvent) {
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mEventHandler.handleEvent(aEvent, mTopLevelWidget);
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return MWindow::event(aEvent);
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}
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virtual void resizeEvent(QResizeEvent* aEvent)
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{
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setSceneRect(viewport()->rect());
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MWindow::resizeEvent(aEvent);
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}
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virtual void closeEvent (QCloseEvent* aEvent)
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{
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if (!mEventHandler.handleCloseEvent(aEvent, mTopLevelWidget)) {
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MWindow::closeEvent(aEvent);
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}
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}
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private:
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MozQGraphicsViewEvents mEventHandler;
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IMozQWidget* mTopLevelWidget;
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MozMSceneWindow* mSceneWin;
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};
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#endif /* MOZ_ENABLE_MEEGOTOUCH */
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#endif
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