videosurface.h

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/*
    Copyright © 2014-2019 by The qTox Project Contributors
 
    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/>.
*/
 
#pragma once
 
#include "src/video/videosource.h"
#include <QWidget>
#include <atomic>
#include <memory>
 
class VideoSurface : public QWidget
{
    Q_OBJECT
 
public:
    VideoSurface(const QPixmap& avatar, QWidget* parent = nullptr, bool expanding = false);
    VideoSurface(const QPixmap& avatar, VideoSource* source, QWidget* parent = nullptr);
    ~VideoSurface();
 
    bool isExpanding() const;
    void setSource(VideoSource* src);
    QRect getBoundingRect() const;
    float getRatio() const;
    void setAvatar(const QPixmap& pixmap);
    QPixmap getAvatar() const;
 
signals:
    void ratioChanged();
    void boundaryChanged();
 
protected:
    void subscribe();
    void unsubscribe();
 
    void paintEvent(QPaintEvent* event) final;
    void resizeEvent(QResizeEvent* event) final;
    void showEvent(QShowEvent* event) final;
 
private slots:
    void onNewFrameAvailable(const std::shared_ptr<VideoFrame>& newFrame);
    void onSourceStopped();
 
private:
    void recalulateBounds();
    void lock();
    void unlock();
 
    QRect boundingRect;
    VideoSource* source;
    std::shared_ptr<VideoFrame> lastFrame;
    std::atomic_bool frameLock;
    uint8_t hasSubscribed;
    QPixmap avatar;
    float ratio;
    bool expanding;
};