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159 lines
3.9 KiB
159 lines
3.9 KiB
/*
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* Copyright (C) 2015-2022 Département de l'Instruction Publique (DIP-SEM)
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*
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* Copyright (C) 2013 Open Education Foundation
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*
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* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
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* l'Education Numérique en Afrique (GIP ENA)
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*
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* This file is part of OpenBoard.
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*
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* OpenBoard 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, version 3 of the License,
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* with a specific linking exception for the OpenSSL project's
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* "OpenSSL" library (or with modified versions of it that use the
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* same license as the "OpenSSL" library).
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*
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* OpenBoard 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 OpenBoard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <QDesktopWidget>
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#include "UBScreenMirror.h"
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#include "core/UBSettings.h"
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#include "core/UBSetting.h"
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#include "core/UBApplication.h"
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#include "board/UBBoardController.h"
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#if defined(Q_OS_OSX)
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#include <ApplicationServices/ApplicationServices.h>
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#endif
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#include "core/memcheck.h"
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UBScreenMirror::UBScreenMirror(QWidget* parent)
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: QWidget(parent)
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, mScreenIndex(0)
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, mSourceWidget(0)
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, mTimerID(0)
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{
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// NOOP
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}
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UBScreenMirror::~UBScreenMirror()
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{
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// NOOP
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}
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void UBScreenMirror::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event);
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QPainter painter(this);
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painter.fillRect(0, 0, width(), height(), QBrush(Qt::black));
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if (!mLastPixmap.isNull())
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{
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int x = (width() - mLastPixmap.width()) / 2;
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int y = (height() - mLastPixmap.height()) / 2;
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painter.drawPixmap(x, y, width(), height(), mLastPixmap);
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}
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}
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void UBScreenMirror::timerEvent(QTimerEvent *event)
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{
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Q_UNUSED(event);
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grabPixmap();
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update();
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}
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void UBScreenMirror::grabPixmap()
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{
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if (mSourceWidget)
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{
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QPoint topLeft = mSourceWidget->mapToGlobal(mSourceWidget->geometry().topLeft());
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QPoint bottomRight = mSourceWidget->mapToGlobal(mSourceWidget->geometry().bottomRight());
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mRect.setTopLeft(topLeft);
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mRect.setBottomRight(bottomRight);
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mLastPixmap = mSourceWidget->grab();
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}
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else{
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// WHY HERE?
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// this is the case we are showing the desktop but the is no widget and we use the last widget rectagle to know
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// what we have to grab. Not very good way of doing
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QDesktopWidget * desktop = QApplication::desktop();
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QScreen * screen = UBApplication::controlScreen();
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mLastPixmap = screen->grabWindow(desktop->effectiveWinId(), mRect.x(), mRect.y(), mRect.width(), mRect.height());
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}
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if (!mLastPixmap.isNull())
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mLastPixmap = mLastPixmap.scaled(width(), height(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
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}
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void UBScreenMirror::setSourceWidget(QWidget *sourceWidget)
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{
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mSourceWidget = sourceWidget;
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mScreenIndex = qApp->desktop()->screenNumber(sourceWidget);
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grabPixmap();
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update();
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}
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void UBScreenMirror::start()
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{
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qDebug() << "mirroring START";
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UBApplication::boardController->freezeW3CWidgets(true);
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if (mTimerID == 0)
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{
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int ms = 125;
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bool success;
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int fps = UBSettings::settings()->mirroringRefreshRateInFps->get().toInt(&success);
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if (success && fps > 0)
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{
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ms = 1000 / fps;
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}
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mTimerID = startTimer(ms);
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}
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else
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{
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qDebug() << "UBScreenMirror::start() : Timer already running ...";
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}
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}
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void UBScreenMirror::stop()
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{
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qDebug() << "mirroring STOP";
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UBApplication::boardController->freezeW3CWidgets(false);
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if (mTimerID != 0)
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{
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killTimer(mTimerID);
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mTimerID = 0;
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}
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}
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