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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/


#include "PresenterHelper.hxx"
#include "CanvasUpdateRequester.hxx"
#include "PresenterCanvas.hxx"
#include <cppcanvas/vclfactory.hxx>
#include <com/sun/star/awt/WindowAttribute.hpp>
#include <com/sun/star/awt/WindowClass.hpp>
#include <com/sun/star/awt/WindowDescriptor.hpp>
#include <osl/file.hxx>
#include <toolkit/helper/vclunohelper.hxx>
#include <vcl/svapp.hxx>
#include <vcl/window.hxx>
#include <vcl/wrkwin.hxx>

using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using ::rtl::OUString;

namespace sd { namespace presenter {

//===== Service ===============================================================

Reference<XInterface> SAL_CALL PresenterHelperService_createInstance (
    const Reference<XComponentContext>& rxContext)
{
    return Reference<XInterface>(static_cast<XWeak*>(new PresenterHelper(rxContext)));
}




::rtl::OUString PresenterHelperService_getImplementationName (void)
    throw(RuntimeException)
{
    return OUString("com.sun.star.comp.Draw.PresenterHelper");
}




Sequence<rtl::OUString> SAL_CALL PresenterHelperService_getSupportedServiceNames (void)
    throw (RuntimeException)
{
    static const ::rtl::OUString sServiceName("com.sun.star.drawing.PresenterHelper");
    return Sequence<rtl::OUString>(&sServiceName, 1);
}




//===== PresenterHelper =======================================================

PresenterHelper::PresenterHelper (
    const Reference<XComponentContext>& rxContext)
    : PresenterHelperInterfaceBase(m_aMutex),
      mxComponentContext(rxContext)
{
}



PresenterHelper::~PresenterHelper (void)
{
}




//----- XInitialize -----------------------------------------------------------

void SAL_CALL PresenterHelper::initialize (const Sequence<Any>& rArguments)
    throw(Exception,RuntimeException)
{
    (void)rArguments;
}




//----- XPaneHelper ----------------------------------------------------

Reference<awt::XWindow> SAL_CALL PresenterHelper::createWindow (
    const Reference<awt::XWindow>& rxParentWindow,
    sal_Bool bCreateSystemChildWindow,
    sal_Bool bInitiallyVisible,
    sal_Bool bEnableChildTransparentMode,
    sal_Bool bEnableParentClip)
    throw (css::uno::RuntimeException)
{
    ::Window* pParentWindow = VCLUnoHelper::GetWindow(rxParentWindow);

    // Create a new window.
    ::Window* pWindow = NULL;
    if (bCreateSystemChildWindow)
    {
        pWindow = new WorkWindow(pParentWindow, WB_SYSTEMCHILDWINDOW);
    }
    else
    {
        pWindow = new ::Window(pParentWindow);
    }
    Reference<awt::XWindow> xWindow (pWindow->GetComponentInterface(), UNO_QUERY);<--- Possible null pointer dereference: pWindow - otherwise it is redundant to check if pWindow is null at line 140

    if (bEnableChildTransparentMode)
    {
        // Make the frame window transparent and make the parent able to
        // draw behind it.
        if (pParentWindow != NULL)
            pParentWindow->EnableChildTransparentMode(sal_True);
    }

    if (pWindow != NULL)
    {
        pWindow->Show(bInitiallyVisible);

        pWindow->SetMapMode(MAP_PIXEL);
        pWindow->SetBackground();
        if ( ! bEnableParentClip)
        {
            pWindow->SetParentClipMode(PARENTCLIPMODE_NOCLIP);
            pWindow->SetPaintTransparent(sal_True);
        }
        else
        {
            pWindow->SetParentClipMode(PARENTCLIPMODE_CLIP);
            pWindow->SetPaintTransparent(sal_False);
        }

    }

    return xWindow;
}




Reference<rendering::XCanvas> SAL_CALL PresenterHelper::createSharedCanvas (
    const Reference<rendering::XSpriteCanvas>& rxUpdateCanvas,
    const Reference<awt::XWindow>& rxUpdateWindow,
    const Reference<rendering::XCanvas>& rxSharedCanvas,
    const Reference<awt::XWindow>& rxSharedWindow,
    const Reference<awt::XWindow>& rxWindow)
    throw (css::uno::RuntimeException)
{
    if ( ! rxSharedCanvas.is()
        || ! rxSharedWindow.is()
        || ! rxWindow.is())
    {
        throw RuntimeException("illegal argument",
            Reference<XInterface>(static_cast<XWeak*>(this)));
    }

    if (rxWindow == rxSharedWindow)
        return rxSharedCanvas;
    else
        return new PresenterCanvas(
            rxUpdateCanvas,
            rxUpdateWindow,
            rxSharedCanvas,
            rxSharedWindow,
            rxWindow);
}




Reference<rendering::XCanvas> SAL_CALL PresenterHelper::createCanvas (
    const Reference<awt::XWindow>& rxWindow,
    sal_Int16 nRequestedCanvasFeatures,
    const OUString& rsOptionalCanvasServiceName)
    throw (css::uno::RuntimeException)
{
    (void)nRequestedCanvasFeatures;

    // No shared window is given or an explicit canvas service name is
    // specified.  Create a new canvas.
    ::Window* pWindow = VCLUnoHelper::GetWindow(rxWindow);
    if (pWindow != NULL)
    {
        Sequence<Any> aArg (5);

        // common: first any is VCL pointer to window (for VCL canvas)
        aArg[0] = makeAny(reinterpret_cast<sal_Int64>(pWindow));
        aArg[1] = Any();
        aArg[2] = makeAny(::com::sun::star::awt::Rectangle());
        aArg[3] = makeAny(sal_False);
        aArg[4] = makeAny(rxWindow);

        Reference<lang::XMultiServiceFactory> xFactory (
            mxComponentContext->getServiceManager(), UNO_QUERY_THROW);
        return Reference<rendering::XCanvas>(
            xFactory->createInstanceWithArguments(
                !rsOptionalCanvasServiceName.isEmpty()
                    ? rsOptionalCanvasServiceName
                    : OUString("com.sun.star.rendering.VCLCanvas"),
                aArg),
            UNO_QUERY);
    }
    else
        throw RuntimeException();
}




void SAL_CALL PresenterHelper::toTop (
    const Reference<awt::XWindow>& rxWindow)
    throw (css::uno::RuntimeException)
{
    ::Window* pWindow = VCLUnoHelper::GetWindow(rxWindow);
    if (pWindow != NULL)
    {
        pWindow->ToTop();
        pWindow->SetZOrder(NULL, WINDOW_ZORDER_LAST);
    }
}




Reference<rendering::XBitmap> SAL_CALL PresenterHelper::loadBitmap (
    const OUString& rsURL,
    const Reference<rendering::XCanvas>& rxCanvas)
    throw (RuntimeException)
{
    if ( ! rxCanvas.is())
        return NULL;

    ::osl::MutexGuard aGuard (::osl::Mutex::getGlobalMutex());

    if (mpGraphicFilter.get() == NULL)
        mpGraphicFilter.reset(new GraphicFilter(sal_False));

    const cppcanvas::CanvasSharedPtr pCanvas (
        cppcanvas::VCLFactory::getInstance().createCanvas(
            Reference<css::rendering::XBitmapCanvas>(rxCanvas,UNO_QUERY)));

    if (pCanvas.get()!=NULL && !rsURL.isEmpty() && mpGraphicFilter.get()!=NULL)
    {
        Graphic aGraphic;
        OUString sFileName;
        if (osl::FileBase::getSystemPathFromFileURL(rsURL, sFileName)
            == osl::FileBase::E_None)
        {
            if (mpGraphicFilter->ImportGraphic(aGraphic, rsURL) == GRFILTER_OK)
            {
                BitmapEx aBitmapEx (aGraphic.GetBitmapEx());
                return cppcanvas::VCLFactory::getInstance().createBitmap(
                    pCanvas,
                    aBitmapEx)->getUNOBitmap();
            }
        }
    }

    return NULL;
}





void SAL_CALL PresenterHelper::captureMouse (
    const Reference<awt::XWindow>& rxWindow)
    throw (RuntimeException)
{
    ::osl::MutexGuard aGuard (::osl::Mutex::getGlobalMutex());

    // Capture the mouse (if not already done.)
    ::Window* pWindow = VCLUnoHelper::GetWindow(rxWindow);
    if (pWindow != NULL && ! pWindow->IsMouseCaptured())
    {
        pWindow->CaptureMouse();
    }
}




void SAL_CALL PresenterHelper::releaseMouse (const Reference<awt::XWindow>& rxWindow)
    throw (RuntimeException)
{
    ::osl::MutexGuard aGuard (::osl::Mutex::getGlobalMutex());

    // Release the mouse (if not already done.)
    ::Window* pWindow = VCLUnoHelper::GetWindow(rxWindow);
    if (pWindow != NULL && pWindow->IsMouseCaptured())
    {
        pWindow->ReleaseMouse();
    }
}




awt::Rectangle PresenterHelper::getWindowExtentsRelative (
    const Reference<awt::XWindow>& rxChildWindow,
    const Reference<awt::XWindow>& rxParentWindow)
    throw (RuntimeException)
{
    ::Window* pChildWindow = VCLUnoHelper::GetWindow(rxChildWindow);
    ::Window* pParentWindow = VCLUnoHelper::GetWindow(rxParentWindow);
    if (pChildWindow!=NULL && pParentWindow!=NULL)
    {
        Rectangle aBox (pChildWindow->GetWindowExtentsRelative(pParentWindow));
        return awt::Rectangle(aBox.Left(),aBox.Top(),aBox.GetWidth(),aBox.GetHeight());
    }
    else
        return awt::Rectangle();
}



} } // end of namespace ::sd::presenter

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */