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#include "qwaylandreadbackeglintegration.h"

#include <QDebug>

#include "qwaylandreadbackeglwindow.h"

QWaylandReadbackEglIntegration::QWaylandReadbackEglIntegration(QWaylandDisplay *display)
    : QWaylandGLIntegration()
    , mWaylandDisplay(display)
{
    qDebug() << "Using Readback-EGL";
    char *display_name = getenv("DISPLAY");
    mDisplay = XOpenDisplay(display_name);
    mScreen = XDefaultScreen(mDisplay);
    mRootWindow = XDefaultRootWindow(mDisplay);
    XSync(mDisplay, False);
}

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


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

void QWaylandReadbackEglIntegration::initialize()
{
    eglBindAPI(EGL_OPENGL_ES_API);
    mEglDisplay = eglGetDisplay(mDisplay);
    EGLint major, minor;
    EGLBoolean initialized = eglInitialize(mEglDisplay,&major,&minor);
    if (initialized) {
        qDebug() << "EGL initialized successfully" << major << "," << minor;
    } else {
        qDebug() << "EGL could not initialized. All EGL and GL operations will fail";
    }
}

QWaylandWindow * QWaylandReadbackEglIntegration::createEglWindow(QWindow *window)
{
    return new QWaylandReadbackEglWindow(window, this);
}

QPlatformGLContext *QWaylandReadbackEglWindow::createPlatformGLContext(const QSurfaceFormat &glFormat, QPlatformGLContext *share) const
{
    return new QWaylandReadbackEglContext(glFormat, share, this);
}

EGLDisplay QWaylandReadbackEglIntegration::eglDisplay()
{
    return mEglDisplay;
}

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

int QWaylandReadbackEglIntegration::depth() const
{
    return XDefaultDepth(mDisplay,mScreen);
}

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

QWaylandDisplay * QWaylandReadbackEglIntegration::waylandDisplay() const
{
    return mWaylandDisplay;
}