/****************************************************************************
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** This file is part of the plugins of the Qt Toolkit.
**
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** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#include "qiosintegration.h"
#include "qioswindow.h"
#include "qiosbackingstore.h"
#include "qiosscreen.h"
#include "qioseventdispatcher.h"
#include "qioscontext.h"

#include <QtPlatformSupport/private/qcoretextfontdatabase_p.h>

#include <QtDebug>

QT_BEGIN_NAMESPACE

QIOSIntegration::QIOSIntegration()
    : m_fontDatabase(new QCoreTextFontDatabase)
    , m_screen(new QIOSScreen(QIOSScreen::MainScreen))
{
    if (![UIApplication sharedApplication]) {
        qWarning()
            << "Error: You are creating QApplication before calling UIApplicationMain.\n"
            << "If you are writing a native iOS application, and only want to use Qt for\n"
            << "parts of the application, a good place to create QApplication is from within\n"
            << "'applicationDidFinishLaunching' inside your UIApplication delegate.\n"
            << "If you instead create a cross-platform Qt application and do not intend to call\n"
            << "UIApplicationMain, you need to link in libqtmain.a, and substitute main with qt_main.\n"
            << "This is normally done automatically by qmake.\n";
        exit(-1);
    }

    screenAdded(m_screen);
}

QIOSIntegration::~QIOSIntegration()
{
}

QPlatformWindow *QIOSIntegration::createPlatformWindow(QWindow *window) const
{
    qDebug() <<  __FUNCTION__ << "Creating platform window";
    return new QIOSWindow(window);
}

// Used when the QWindow's surface type is set by the client to QSurface::RasterSurface
QPlatformBackingStore *QIOSIntegration::createPlatformBackingStore(QWindow *window) const
{
    qDebug() <<  __FUNCTION__ << "Creating platform backingstore";
    return new QIOSBackingStore(window);
}

// Used when the QWindow's surface type is set by the client to QSurface::OpenGLSurface
QPlatformOpenGLContext *QIOSIntegration::createPlatformOpenGLContext(QOpenGLContext *context) const
{
    Q_UNUSED(context);
    qDebug() <<  __FUNCTION__ << "Creating platform opengl context";
    return new QIOSContext(context);
}

QAbstractEventDispatcher *QIOSIntegration::guiThreadEventDispatcher() const
{
    return new QIOSEventDispatcher();
}

QPlatformFontDatabase * QIOSIntegration::fontDatabase() const
{
    return m_fontDatabase;
}

QPlatformNativeInterface *QIOSIntegration::nativeInterface() const
{
    return const_cast<QIOSIntegration *>(this);
}

void *QIOSIntegration::nativeResourceForWindow(const QByteArray &resource, QWindow *window)
{
    if (!window || !window->handle())
        return 0;

    QByteArray lowerCaseResource = resource.toLower();

    QIOSWindow *platformWindow = static_cast<QIOSWindow *>(window->handle());

    if (lowerCaseResource == "uiview")
        return platformWindow->nativeView();

    return 0;
}

QT_END_NAMESPACE