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#include <QtGui/qpaintdevice.h>
#include <QtGui/qpixmap.h>
#include <QtGui/qwidget.h>
#include "qegl_p.h"

#include <windows.h>


QT_BEGIN_NAMESPACE

EGLSurface QEglContext::createSurface(QPaintDevice *device, const QEglProperties *properties)
{
    // Create the native drawable for the paint device.
    int devType = device->devType();
    EGLNativePixmapType pixmapDrawable = 0;
    EGLNativeWindowType windowDrawable = 0;
    bool ok;
    if (devType == QInternal::Pixmap) {
        pixmapDrawable = 0;
        ok = (pixmapDrawable != 0);
    } else if (devType == QInternal::Widget) {
        windowDrawable = (EGLNativeWindowType)(static_cast<QWidget *>(device))->winId();
        ok = (windowDrawable != 0);
    } else {
        ok = false;
    }
    if (!ok) {
        qWarning("QEglContext::createSurface(): Cannot create the native EGL drawable");
        return EGL_NO_SURFACE;
    }

    // Create the EGL surface to draw into, based on the native drawable.
    const int *props;
    if (properties)
        props = properties->properties();
    else
        props = 0;
    EGLSurface surf;
    if (devType == QInternal::Widget)
        surf = eglCreateWindowSurface(dpy, cfg, windowDrawable, props);
    else
        surf = eglCreatePixmapSurface(dpy, cfg, pixmapDrawable, props);
    if (surf == EGL_NO_SURFACE) {
        qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", eglGetError());
    }
    return surf;
}

EGLDisplay QEglContext::getDisplay(QPaintDevice *device)
{
    EGLDisplay dpy = 0;
    HWND win = (static_cast<QWidget*>(device))->winId();
    HDC myDc = GetDC(win);
    if (!myDc) {
        qWarning("QEglContext::defaultDisplay(): WinCE display is not open");
    }
    dpy = eglGetDisplay(EGLNativeDisplayType(myDc));
    if (dpy == EGL_NO_DISPLAY) {
        qWarning("QEglContext::defaultDisplay(): Falling back to EGL_DEFAULT_DISPLAY");
        dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
    }
    return dpy;
}

// Set pixel format and other properties based on a paint device.
void QEglProperties::setPaintDeviceFormat(QPaintDevice *dev)
{
    int devType = dev->devType();
    if (devType == QInternal::Image)
        setPixelFormat(static_cast<QImage *>(dev)->format());
    else
        setPixelFormat(QImage::Format_RGB16); // XXX
}

QT_END_NAMESPACE