/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_vcl.hxx"

#include <vcl/sysdata.hxx>

#include <tools/prex.h>
#include <X11/extensions/Xrender.h>
#include <tools/postx.h>

#include <unx/salunx.h>
#include <unx/saldata.hxx>
#include <unx/saldisp.hxx>
#include <unx/salgdi.h>
#include <unx/salvd.h>

#include <salinst.hxx>

// -=-= SalInstance =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
SalVirtualDevice* X11SalInstance::CreateVirtualDevice( SalGraphics* pGraphics,
                                                       long nDX, long nDY,
                                                       sal_uInt16 nBitCount, const SystemGraphicsData *pData )
{
	X11SalVirtualDevice *pVDev = new X11SalVirtualDevice();
	if( !nBitCount && pGraphics )
		nBitCount = pGraphics->GetBitCount();

	if( pData && pData->hDrawable != None )
    {
        XLIB_Window aRoot;
        int x, y;
        unsigned int w = 0, h = 0, bw, d;
        Display* pDisp = GetX11SalData()->GetDisplay()->GetDisplay();
        XGetGeometry( pDisp, pData->hDrawable,
                      &aRoot, &x, &y, &w, &h, &bw, &d );
        int nScreen = 0;
        while( nScreen < ScreenCount( pDisp ) )
        {
            if( RootWindow( pDisp, nScreen ) == aRoot )
                break;
            nScreen++;
        }
        nDX = (long)w;
        nDY = (long)h;
		if( !pVDev->Init( GetX11SalData()->GetDisplay(), nDX, nDY, nBitCount, nScreen, pData->hDrawable, pData->pRenderFormat ) )
		{
			delete pVDev;
			return NULL;
		}
	}
    else if( !pVDev->Init( GetX11SalData()->GetDisplay(), nDX, nDY, nBitCount,
                           pGraphics ? static_cast<X11SalGraphics*>(pGraphics)->GetScreenNumber() :
                                       GetX11SalData()->GetDisplay()->GetDefaultScreenNumber() ) )
	{
		delete pVDev;
		return NULL;
	}

	pVDev->InitGraphics( pVDev );
	return pVDev;
}

void X11SalInstance::DestroyVirtualDevice( SalVirtualDevice* pDevice )
{
    delete pDevice;
}

// -=-= SalGraphicsData =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
void X11SalGraphics::Init( X11SalVirtualDevice *pDevice, SalColormap* pColormap, bool bDeleteColormap )
{
    SalColormap *pOrigDeleteColormap = m_pDeleteColormap;

	SalDisplay *pDisplay  = pDevice->GetDisplay();
    m_nScreen = pDevice->GetScreenNumber();
	
	int nVisualDepth = pDisplay->GetColormap( m_nScreen ).GetVisual().GetDepth();
	int nDeviceDepth = pDevice->GetDepth();

	if( pColormap )
    {
		m_pColormap = pColormap;
		if( bDeleteColormap )
			m_pDeleteColormap = pColormap;
	}
	else
	if( nDeviceDepth == nVisualDepth )
		m_pColormap = &pDisplay->GetColormap( m_nScreen );
	else 
	if( nDeviceDepth == 1 )
		m_pColormap = m_pDeleteColormap = new SalColormap();
			 
    if (m_pDeleteColormap != pOrigDeleteColormap)
		delete pOrigDeleteColormap;

	const Drawable aVdevDrawable = pDevice->GetDrawable();
	SetDrawable( aVdevDrawable, m_nScreen );

	m_pVDev		 = pDevice;
	m_pFrame	 = NULL;

	bWindow_     = pDisplay->IsDisplay();
	bVirDev_     = sal_True;
}

// -=-= SalVirDevData / SalVirtualDevice -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
sal_Bool X11SalVirtualDevice::Init( SalDisplay *pDisplay,
                                long nDX, long nDY,
								sal_uInt16 nBitCount,
                                int nScreen,
								Pixmap hDrawable,
								void* pRenderFormatVoid )
{
	SalColormap* pColormap = NULL;
	bool bDeleteColormap = false;

    pDisplay_               = pDisplay;
    pGraphics_				= new X11SalGraphics();
    m_nScreen               = nScreen;
	if( pRenderFormatVoid ) {
		XRenderPictFormat *pRenderFormat = ( XRenderPictFormat* )pRenderFormatVoid;
		pGraphics_->SetXRenderFormat( pRenderFormat );
		if( pRenderFormat->colormap )
			pColormap = new SalColormap( pDisplay, pRenderFormat->colormap, m_nScreen );
		else
			pColormap = new SalColormap( nBitCount );
 		bDeleteColormap = true;
	}
    else if( nBitCount != pDisplay->GetVisual( m_nScreen ).GetDepth() )
    {
        pColormap = new SalColormap( nBitCount );
        bDeleteColormap = true;
    }
    pGraphics_->SetLayout( 0 ); // by default no! mirroring for VirtualDevices, can be enabled with EnableRTL()
	nDX_                    = nDX;
	nDY_                    = nDY;
	nDepth_                 = nBitCount;

	if( hDrawable == None )
		hDrawable_          = XCreatePixmap( GetXDisplay(),
											 pDisplay_->GetDrawable( m_nScreen ),
											 nDX_, nDY_,
											 GetDepth() );
	else
	{
		hDrawable_ = hDrawable;
		bExternPixmap_ = sal_True;
	}

    pGraphics_->Init( this, pColormap, bDeleteColormap );

	return hDrawable_ != None ? sal_True : sal_False;
}

// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
X11SalVirtualDevice::X11SalVirtualDevice()
{
	pDisplay_               = (SalDisplay*)ILLEGAL_POINTER;
	pGraphics_              = NULL;
	hDrawable_              = None;
	nDX_                    = 0;
	nDY_                    = 0;
	nDepth_                 = 0;
	bGraphics_              = sal_False;
	bExternPixmap_          = sal_False;
}

// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
X11SalVirtualDevice::~X11SalVirtualDevice()
{
	if( pGraphics_ )
		delete pGraphics_;
	pGraphics_ = NULL;

	if( GetDrawable() && !bExternPixmap_ )
		XFreePixmap( GetXDisplay(), GetDrawable() );
}

SalGraphics* X11SalVirtualDevice::GetGraphics()
{
	if( bGraphics_ )
		return NULL;

	if( pGraphics_ )
		bGraphics_ = sal_True;

	return pGraphics_;
}

void X11SalVirtualDevice::ReleaseGraphics( SalGraphics* )
{ bGraphics_ = sal_False; }

sal_Bool X11SalVirtualDevice::SetSize( long nDX, long nDY )
{
	if( bExternPixmap_ )
		return sal_False;
    
    // #144688#
    // the X protocol request CreatePixmap puts an upper bound
    // of 16 bit to the size. Beyond that there may be implementation
    // limits of the Xserver; which we should catch by a failed XCreatePixmap
    // call. However extra large values should be caught here since we'd run into
    // 16 bit truncation here without noticing.
    if( nDX < 0 || nDX > 65535 ||
        nDY < 0 || nDY > 65535 )
        return sal_False;

	if( !nDX ) nDX = 1;
	if( !nDY ) nDY = 1;

	Pixmap h = XCreatePixmap( GetXDisplay(),
							  pDisplay_->GetDrawable( m_nScreen ),
							  nDX, nDY, nDepth_ );

	if( !h )
	{
		if( !GetDrawable() )
		{
			hDrawable_ = XCreatePixmap( GetXDisplay(),
                                        pDisplay_->GetDrawable( m_nScreen ),
                                        1, 1, nDepth_ );
			nDX_ = 1;
			nDY_ = 1;
		}
		return sal_False;
	}

	if( GetDrawable() )
		XFreePixmap( GetXDisplay(), GetDrawable() );
	hDrawable_ = h;

	nDX_ = nDX;
	nDY_ = nDY;

	if( pGraphics_ )
		InitGraphics( this );
	
	return sal_True;
}

void X11SalVirtualDevice::GetSize( long& rWidth, long& rHeight )
{
    rWidth  = GetWidth();
    rHeight = GetHeight();
}