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#include "qgraphicssystem_minimaldfb.h"
#include "qwindowsurface_minimaldfb.h"
#include "qblitter_directfb.h"
#include "qdirectfbconvenience.h"

#include <private/qwindowsurface_raster_p.h>
#include <private/qpixmap_raster_p.h>

#include <private/qpixmap_blitter_p.h>
#include <private/qpixmapdata_p.h>
#include <QCoreApplication>

QT_BEGIN_NAMESPACE

QDirectFbGraphicsSystemScreen::QDirectFbGraphicsSystemScreen(IDirectFB *dfb, int display)
    :QGraphicsSystemScreen() , m_input(this)
{
    DFBResult result  = dfb->GetDisplayLayer(dfb, DLID_PRIMARY, &m_layer);
    if (result != DFB_OK) {
        DirectFBError("QDirectFbGraphicsSystemScreen "
                      "Unable to get primary display layer!", result);
    }
    DFBDisplayLayerConfig *displayLayerConfig;
//    m_layer->GetConfiguration(m_layer,displayLayerConfig);
//    displayLayerConfig->surface_caps = DFBSurfaceCapabilities(displayLayerConfig->surface_caps | DSCAPS_PREMULTIPLIED);
//    m_layer->SetConfiguration(m_layer, displayLayerConfig);
    m_layer->SetCooperativeLevel(m_layer,DLSCL_SHARED);


    DFBDisplayLayerConfig config;
    m_layer->GetConfiguration(m_layer, &config);

    m_format = QDirectFbConvenience::imageFormatFromSurfaceFormat(config.pixelformat, config.surface_caps);
    m_geometry = QRect(0,0,config.width,config.height);
    const int dpi = 72;
    const qreal inch = 25.4;
    m_depth = 32;
    m_physicalSize = QSize(qRound(config.width * inch / dpi), qRound(config.height *inch / dpi));
}

QDirectFbGraphicsSystemScreen::~QDirectFbGraphicsSystemScreen()
{
}

IDirectFBWindow *QDirectFbGraphicsSystemScreen::createWindow(const QRect &rect, QWidget *tlw)
{
    IDirectFBWindow *window;

    DFBWindowDescription description;
    memset(&description,0,sizeof(DFBWindowDescription));
    description.flags = DFBWindowDescriptionFlags(DWDESC_WIDTH|DWDESC_HEIGHT|DWDESC_POSX|DWDESC_POSY|DWDESC_SURFACE_CAPS
#if DIRECTFB_MINOR_VERSION >= 1
                                                  |DWDESC_OPTIONS
#endif
                                                  |DWDESC_CAPS);
    description.width = rect.width();
    description.height = rect.height();
    description.posx = rect.x();
    description.posy = rect.y();
#if DIRECTFB_MINOR_VERSION >= 1
    description.options = DFBWindowOptions(DWOP_ALPHACHANNEL);
#endif
    description.caps = DFBWindowCapabilities(DWCAPS_DOUBLEBUFFER);
    description.surface_caps = DSCAPS_PREMULTIPLIED;

    DFBResult result = m_layer->CreateWindow(m_layer,&description,&window);
    if (result != DFB_OK) {
        DirectFBError("QDirectFbGraphicsSystemScreen: failed to create window",result);
    }

    DFBWindowID id;
    window->GetID(window, &id);
    m_input.addWindow(id,tlw);
    return window;
}


QDirectFbGraphicsSystem::QDirectFbGraphicsSystem()
{
    IDirectFB *dfb;
    DFBResult result = DFB_OK;

    const QStringList args = QCoreApplication::arguments();
    int argc = args.size();
    char **argv = new char*[argc];

    for (int i = 0; i < argc; ++i)
        argv[i] = qstrdup(args.at(i).toLocal8Bit().constData());

    result = DirectFBInit(&argc, &argv);
    if (result != DFB_OK) {
        DirectFBError("QDirectFBScreen: error initializing DirectFB",
                      result);
    }
    delete[] argv;

    result = DirectFBCreate(&dfb);
    if (result != DFB_OK) {
        DirectFBError("QDirectFBScreen: error creating DirectFB interface",
                      result);
    }
    QDirectFbConvenience::setDfbInterface(dfb);

    mPrimaryScreen = new QDirectFbGraphicsSystemScreen(dfb,0);
    mScreens.append(mPrimaryScreen);
}

QPixmapData *QDirectFbGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
{
    if (type == QPixmapData::BitmapType)
        return new QRasterPixmapData(type);
    else
        return new QBlittablePixmapData(type);
}

QWindowSurface *QDirectFbGraphicsSystem::createWindowSurface(QWidget *widget) const
{
    return new QDirectFbWindowSurface (mPrimaryScreen, widget);
}

QBlittable *QDirectFbGraphicsSystem::createBlittable(const QRect &rect) const
{
    return new QDirectFbBlitter(rect);
}

QT_END_NAMESPACE