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/*
* Copyright (C) 2015-2018 Département de l'Instruction Publique (DIP-SEM)
*
* Copyright (C) 2013 Open Education Foundation
*
* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
* l'Education Numérique en Afrique (GIP ENA)
*
* This file is part of OpenBoard.
*
* OpenBoard 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, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* OpenBoard 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 OpenBoard. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QDesktopWidget>
#include "UBScreenMirror.h"
#include "core/UBSettings.h"
#include "core/UBSetting.h"
#include "core/UBApplication.h"
#include "board/UBBoardController.h"
#if defined(Q_OS_OSX)
#include <ApplicationServices/ApplicationServices.h>
#endif
#include "core/memcheck.h"
UBScreenMirror::UBScreenMirror(QWidget* parent)
: QWidget(parent)
, mScreenIndex(0)
, mSourceWidget(0)
, mTimerID(0)
{
// NOOP
}
UBScreenMirror::~UBScreenMirror()
{
// NOOP
}
void UBScreenMirror::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
QPainter painter(this);
painter.fillRect(0, 0, width(), height(), QBrush(Qt::black));
if (!mLastPixmap.isNull())
{
int x = (width() - mLastPixmap.width()) / 2;
int y = (height() - mLastPixmap.height()) / 2;
painter.drawPixmap(x, y, mLastPixmap);
}
}
void UBScreenMirror::timerEvent(QTimerEvent *event)
{
Q_UNUSED(event);
grabPixmap();
update();
}
void UBScreenMirror::grabPixmap()
{
if (mSourceWidget)
{
QPoint topLeft = mSourceWidget->mapToGlobal(mSourceWidget->geometry().topLeft());
QPoint bottomRight = mSourceWidget->mapToGlobal(mSourceWidget->geometry().bottomRight());
mRect.setTopLeft(topLeft);
mRect.setBottomRight(bottomRight);
mLastPixmap = mSourceWidget->grab();
}
else{
// WHY HERE?
// this is the case we are showing the desktop but the is no widget and we use the last widget rectagle to know
// what we have to grab. Not very good way of doing
QDesktopWidget * desktop = QApplication::desktop();
QScreen * screen = UBApplication::controlScreen();
mLastPixmap = screen->grabWindow(desktop->effectiveWinId(), mRect.x(), mRect.y(), mRect.width(), mRect.height());
}
if (!mLastPixmap.isNull())
mLastPixmap = mLastPixmap.scaled(width(), height(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
}
void UBScreenMirror::setSourceWidget(QWidget *sourceWidget)
{
mSourceWidget = sourceWidget;
mScreenIndex = qApp->desktop()->screenNumber(sourceWidget);
grabPixmap();
update();
}
void UBScreenMirror::start()
{
qDebug() << "mirroring START";
UBApplication::boardController->freezeW3CWidgets(true);
if (mTimerID == 0)
{
int ms = 125;
bool success;
int fps = UBSettings::settings()->mirroringRefreshRateInFps->get().toInt(&success);
if (success && fps > 0)
{
ms = 1000 / fps;
}
mTimerID = startTimer(ms);
}
else
{
qDebug() << "UBScreenMirror::start() : Timer already running ...";
}
}
void UBScreenMirror::stop()
{
qDebug() << "mirroring STOP";
UBApplication::boardController->freezeW3CWidgets(false);
if (mTimerID != 0)
{
killTimer(mTimerID);
mTimerID = 0;
}
}