qTox/src/video/netcamview.cpp

/*
    Copyright © 2014-2015 by The qTox Project

    This file is part of qTox, a Qt-based graphical interface for Tox.

    qTox is libre 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 3 of the License, or
    (at your option) any later version.

    qTox 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 qTox.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "netcamview.h"
#include "camerasource.h"
#include "src/core/core.h"
#include "src/video/videosurface.h"
#include "src/widget/tool/movablewidget.h"
#include <QLabel>
#include <QBoxLayout>
#include <QFrame>

NetCamView::NetCamView(int friendId, QWidget* parent)
    : GenericNetCamView(parent)
    , selfFrame{nullptr}
{
    videoSurface = new VideoSurface(friendId, this);
    videoSurface->setMinimumHeight(256);
    videoSurface->setContentsMargins(6, 6, 6, 6);

    verLayout->insertWidget(0, videoSurface, 1);

    selfVideoSurface = new VideoSurface(-1, this, true);
    selfVideoSurface->setObjectName(QStringLiteral("CamVideoSurface"));
    selfVideoSurface->setMouseTracking(true);
    selfVideoSurface->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    selfFrame = new MovableWidget(videoSurface);
    selfFrame->show();

    QHBoxLayout* frameLayout = new QHBoxLayout(selfFrame);
    frameLayout->addWidget(selfVideoSurface);
    frameLayout->setMargin(0);

    updateRatio();
    connect(selfVideoSurface, &VideoSurface::ratioChanged, this, &NetCamView::updateRatio);

    connect(videoSurface, &VideoSurface::boundaryChanged, [this]()
    {
        QRect boundingRect = videoSurface->getBoundingRect();
        updateFrameSize(boundingRect.size());
        selfFrame->setBoundary(boundingRect);
    });

    connect(videoSurface, &VideoSurface::ratioChanged, [this]()
    {
        selfFrame->setMinimumWidth(selfFrame->minimumHeight() * selfVideoSurface->getRatio());
        QRect boundingRect = videoSurface->getBoundingRect();
        updateFrameSize(boundingRect.size());
        selfFrame->resetBoundary(boundingRect);
    });
}

void NetCamView::show(VideoSource *source, const QString &title)
{
    setSource(source);
    selfVideoSurface->setSource(&CameraSource::getInstance());

    setTitle(title);
    QWidget::show();
}

void NetCamView::hide()
{
    setSource(nullptr);
    selfVideoSurface->setSource(nullptr);

    if (selfFrame)
        selfFrame->deleteLater();

    selfFrame = nullptr;

    QWidget::hide();
}

void NetCamView::setSource(VideoSource *s)
{
    videoSurface->setSource(s);
}

void NetCamView::setTitle(const QString &title)
{
    setWindowTitle(title);
}

void NetCamView::showEvent(QShowEvent *event)
{
    selfFrame->resetBoundary(videoSurface->getBoundingRect());
}

void NetCamView::updateRatio()
{
    selfFrame->setMinimumWidth(selfFrame->minimumHeight() * selfVideoSurface->getRatio());
    selfFrame->setRatio(selfVideoSurface->getRatio());
}

void NetCamView::updateFrameSize(QSize size)
{
    selfFrame->setMaximumSize(size.height() / 3, size.width() / 3);

    if (selfFrame->maximumWidth() > selfFrame->maximumHeight())
        selfFrame->setMaximumWidth(selfFrame->maximumHeight() * selfVideoSurface->getRatio());
    else
        selfFrame->setMaximumHeight(selfFrame->maximumWidth() / selfVideoSurface->getRatio());
}