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#include "qwaylandxcompositeglxintegration.h"

#include "qwaylandxcompositeglxwindow.h"

#include <QtCore/QDebug>

#include "wayland-xcomposite-client-protocol.h"

QWaylandGLIntegration * QWaylandGLIntegration::createGLIntegration(QWaylandDisplay *waylandDisplay)
{
    return new QWaylandXCompositeGLXIntegration(waylandDisplay);
}

QWaylandXCompositeGLXIntegration::QWaylandXCompositeGLXIntegration(QWaylandDisplay *waylandDisplay)
    : mWaylandDisplay(waylandDisplay)
    , mWaylandComposite(0)
    , mDisplay(0)
    , mScreen(0)
    , mRootWindow(0)
{
    qDebug() << "Using XComposite-GLX";
    wl_display_add_global_listener(waylandDisplay->wl_display(), QWaylandXCompositeGLXIntegration::wlDisplayHandleGlobal,
                                   this);
}

QWaylandXCompositeGLXIntegration::~QWaylandXCompositeGLXIntegration()
{
    XCloseDisplay(mDisplay);
}

void QWaylandXCompositeGLXIntegration::initialize()
{
}

QWaylandWindow * QWaylandXCompositeGLXIntegration::createEglWindow(QWindow *window)
{
    return new QWaylandXCompositeGLXWindow(window, this);
}

QPlatformGLContext *QWaylandXCompositeGLXIntegration::createPlatformGLContext(const QGuiGLFormat &glFormat, QPlatformGLContext *share) const
{
    return new QWaylandXCompositeGLXContext(glFormat, share, mDisplay, mScreen);
}

Display * QWaylandXCompositeGLXIntegration::xDisplay() const
{
    return mDisplay;
}

int QWaylandXCompositeGLXIntegration::screen() const
{
    return mScreen;
}

Window QWaylandXCompositeGLXIntegration::rootWindow() const
{
    return mRootWindow;
}

QWaylandDisplay * QWaylandXCompositeGLXIntegration::waylandDisplay() const
{
    return mWaylandDisplay;
}
wl_xcomposite * QWaylandXCompositeGLXIntegration::waylandXComposite() const
{
    return mWaylandComposite;
}

const struct wl_xcomposite_listener QWaylandXCompositeGLXIntegration::xcomposite_listener = {
    QWaylandXCompositeGLXIntegration::rootInformation
};

void QWaylandXCompositeGLXIntegration::wlDisplayHandleGlobal(wl_display *display, uint32_t id, const char *interface, uint32_t version, void *data)
{
    Q_UNUSED(version);
    if (strcmp(interface, "wl_xcomposite") == 0) {
        qDebug("XComposite-GLX: got wl_xcomposite global");
        QWaylandXCompositeGLXIntegration *integration = static_cast<QWaylandXCompositeGLXIntegration *>(data);
        integration->mWaylandComposite = wl_xcomposite_create(display,id,1);
        wl_xcomposite_add_listener(integration->mWaylandComposite,&xcomposite_listener,integration);
    }

}

void QWaylandXCompositeGLXIntegration::rootInformation(void *data, wl_xcomposite *xcomposite, const char *display_name, uint32_t root_window)
{
    Q_UNUSED(xcomposite);
    QWaylandXCompositeGLXIntegration *integration = static_cast<QWaylandXCompositeGLXIntegration *>(data);

    qDebug("XComposite-GLX: xcomposite listener callback");

    integration->mDisplay = XOpenDisplay(display_name);
    integration->mRootWindow = (Window) root_window;
    integration->mScreen = XDefaultScreen(integration->mDisplay);
}