/********************************************************************
 KWin - the KDE window manager
 This file is part of the KDE project.

Copyright (C) 2014 Martin Gräßlin <mgraesslin@kde.org>

This program 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; either version 2 of the License, or
(at your option) any later version.

This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#ifndef KWIN_WAYLAND_SERVER_OUTPUT_INTERFACE_H
#define KWIN_WAYLAND_SERVER_OUTPUT_INTERFACE_H

#include <QObject>
#include <QPoint>
#include <QSize>

#include <kwaylandserver_export.h>

struct wl_global;
struct wl_client;
struct wl_resource;

namespace KWin
{
namespace WaylandServer
{

class Display;

class KWAYLANDSERVER_EXPORT OutputInterface : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QSize physicalSize READ physicalSize WRITE setPhysicalSize NOTIFY physicalSizeChanged)
    Q_PROPERTY(QPoint globalPosition READ globalPosition WRITE setGlobalPosition NOTIFY globalPositionChanged)
    Q_PROPERTY(QString manufacturer READ manufacturer WRITE setManufacturer NOTIFY manufacturerChanged)
    Q_PROPERTY(QString model READ model WRITE setModel NOTIFY modelChanged)
    Q_PROPERTY(QSize pixelSize READ pixelSize NOTIFY pixelSizeChanged)
    Q_PROPERTY(int refreshRate READ refreshRate NOTIFY refreshRateChanged)
    Q_PROPERTY(int scale READ scale WRITE setScale NOTIFY scaleChanged)
public:
    enum class SubPixel {
        Unknown,
        None,
        HorizontalRGB,
        HorizontalBGR,
        VerticalRGB,
        VerticalBGR
    };
    enum class Transform {
        Normal,
        Rotated90,
        Rotated180,
        Rotated270,
        Flipped,
        Flipped90,
        Flipped180,
        Flipped270
    };
    enum class ModeFlag {
        Current = 1,
        Preferred = 2
    };
    Q_DECLARE_FLAGS(ModeFlags, ModeFlag)
    struct Mode {
        QSize size = QSize();
        int refreshRate = 60000;
        ModeFlags flags;
    };
    virtual ~OutputInterface();
    void create();
    void destroy();
    bool isValid() const {
        return m_output != nullptr;
    }

    const QSize &physicalSize() const {
        return m_physicalSize;
    }
    const QPoint &globalPosition() const {
        return m_globalPosition;
    }
    const QString &manufacturer() const {
        return m_manufacturer;
    }
    const QString &model() const {
        return m_model;
    }
    QSize pixelSize() const;
    int refreshRate() const;
    int scale() const {
        return m_scale;
    }
    SubPixel subPixel() const {
        return m_subPixel;
    }
    Transform transform() const {
        return m_transform;
    }
    QList<Mode> modes() const {
        return m_modes;
    }

    void setPhysicalSize(const QSize &size);
    void setGlobalPosition(const QPoint &pos);
    void setManufacturer(const QString &manufacturer);
    void setModel(const QString &model);
    void setScale(int scale);
    void setSubPixel(SubPixel subPixel);
    void setTransform(Transform transform);
    void addMode(const QSize &size, ModeFlags flags = ModeFlags(), int refreshRate = 60000);
    void setCurrentMode(const QSize &size, int refreshRate = 60000);

    operator wl_global*() {
        return m_output;
    }
    operator wl_global*() const {
        return m_output;
    }

Q_SIGNALS:
    void physicalSizeChanged(const QSize&);
    void globalPositionChanged(const QPoint&);
    void manufacturerChanged(const QString&);
    void modelChanged(const QString&);
    void pixelSizeChanged(const QSize&);
    void refreshRateChanged(int);
    void scaleChanged(int);
    void subPixelChanged(SubPixel);
    void transformChanged(Transform);
    void modesChanged();
    void currentModeChanged();

private:
    struct ResourceData {
        wl_resource *resource;
        uint32_t version;
    };
    friend class Display;
    explicit OutputInterface(Display *display, QObject *parent = nullptr);
    static void bind(wl_client *client, void *data, uint32_t version, uint32_t id);
    static void unbind(wl_resource *resource);
    void bind(wl_client *client, uint32_t version, uint32_t id);
    int32_t toTransform() const;
    int32_t toSubPixel() const;
    void sendMode(wl_resource *resource, const Mode &mode);
    void sendDone(const ResourceData &data);
    void updateGeometry();
    void sendGeometry(wl_resource *resource);
    void sendScale(const ResourceData &data);
    void updateScale();
    Display *m_display;
    wl_global *m_output;
    QSize m_physicalSize;
    QPoint m_globalPosition;
    QString m_manufacturer;
    QString m_model;
    int m_scale;
    SubPixel m_subPixel;
    Transform m_transform;
    QList<Mode> m_modes;
    QList<ResourceData> m_resources;
};

}
}

Q_DECLARE_OPERATORS_FOR_FLAGS(KWin::WaylandServer::OutputInterface::ModeFlags)
Q_DECLARE_METATYPE(KWin::WaylandServer::OutputInterface::SubPixel)
Q_DECLARE_METATYPE(KWin::WaylandServer::OutputInterface::Transform)

#endif