matrixion/src/ui/MxcAnimatedImage.h

// SPDX-FileCopyrightText: 2021 Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later

#pragma once

#include <QBuffer>
#include <QMovie>
#include <QObject>
#include <QQuickItem>

class TimelineModel;

// This is an AnimatedImage, that can draw encrypted images
class MxcAnimatedImage : public QQuickItem
{
        Q_OBJECT
        Q_PROPERTY(TimelineModel *roomm READ room WRITE setRoom NOTIFY roomChanged REQUIRED)
        Q_PROPERTY(QString eventId READ eventId WRITE setEventId NOTIFY eventIdChanged)
        Q_PROPERTY(bool animatable READ animatable NOTIFY animatableChanged)
        Q_PROPERTY(bool loaded READ loaded NOTIFY loadedChanged)
public:
        MxcAnimatedImage(QQuickItem *parent = nullptr)
          : QQuickItem(parent)
        {
                connect(this, &MxcAnimatedImage::eventIdChanged, &MxcAnimatedImage::startDownload);
                connect(this, &MxcAnimatedImage::roomChanged, &MxcAnimatedImage::startDownload);
                connect(&movie, &QMovie::frameChanged, this, &MxcAnimatedImage::newFrame);
                setFlag(QQuickItem::ItemHasContents);
                // setAcceptHoverEvents(true);
        }

        bool animatable() const { return animatable_; }
        bool loaded() const { return buffer.size() > 0; }
        QString eventId() const { return eventId_; }
        TimelineModel *room() const { return room_; }
        void setEventId(QString newEventId)
        {
                if (eventId_ != newEventId) {
                        eventId_ = newEventId;
                        emit eventIdChanged();
                }
        }
        void setRoom(TimelineModel *room)
        {
                if (room_ != room) {
                        room_ = room;
                        emit roomChanged();
                }
        }

        QSGNode *updatePaintNode(QSGNode *oldNode,
                                 QQuickItem::UpdatePaintNodeData *updatePaintNodeData) override;

signals:
        void roomChanged();
        void eventIdChanged();
        void animatableChanged();
        void loadedChanged();

private slots:
        void startDownload();
        void newFrame(int frame)
        {
                currentFrame = frame;
                imageDirty   = true;
                update();
        }

private:
        TimelineModel *room_ = nullptr;
        QString eventId_;
        QString filename_;
        bool animatable_ = false;
        QBuffer buffer;
        QMovie movie;
        int currentFrame = 0;
        bool imageDirty  = true;
};