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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: cairo_win32_cairo.cxx,v $
*
* $Revision: 1.3 $
*
* 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.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_canvas.hxx"
#ifdef WNT
/************************************************************************
* Win32 surface backend for OpenOffice.org Cairo Canvas *
************************************************************************/
#include <tools/prewin.h>
#include <windows.h>
#include <tools/postwin.h>
#include <osl/diagnose.h>
#include "cairo_cairo.hxx"
#ifdef CAIRO_HAS_WIN32_SURFACE
#include <cairo-win32.h>
namespace cairo
{
/**
* Surface::Surface: Create generic Canvas surface using given Cairo Surface
*
* @param pSurface Cairo Surface
*
* This constructor only stores data, it does no processing.
* It is used with e.g. cairo_image_surface_create_for_data()
* and Surface::getSimilar()
*
* Set the mpSurface to the new surface or NULL
**/
Surface::Surface( cairo_surface_t* pSurface )
: mnRefCount( 1 ),
mpSurface( pSurface )
{
}
/**
* Surface::Surface: Create Canvas surface from Window reference.
* @param pSysData Platform native system environment data (struct SystemEnvData in vcl/inc/sysdata.hxx)
* @param x horizontal location of the new surface
* @param y vertical location of the new surface
* @param width width of the new surface
* @param height height of the new surface
*
* pSysData contains the platform native Window reference.
* pSysData is used to create a surface on the Window
*
* Set the mpSurface to the new surface or NULL
**/
Surface::Surface( const SystemEnvData* pSysData, int x, int y, int /* width */, int /* height */ )
: mnRefCount( 1 ),
mpSurface( NULL )
{
HDC hDC;
hDC = GetDC( pSysData->hWnd );
mpSurface = cairo_win32_surface_create( hDC );
cairo_surface_set_device_offset( mpSurface, x, y );
}
/**
* Surface::Surface: Create platfrom native Canvas surface from BitmapSystemData
* @param pSysData (not used)
* @param pBmpData Platform native image data (struct BitmapSystemData in vcl/inc/bitmap.hxx)
* @param width width of the new surface
* @param height height of the new surface
*
* Create a surface based on image data on pBmpData
*
* Set the mpSurface to the new surface or NULL
**/
Surface::Surface( const SystemEnvData* /* pSysData */, const BitmapSystemData* pBmpData, int width, int height )
: mnRefCount( 1 ),
mpSurface( NULL )
{
OSL_ASSERT (pBmpData->mnWidth == width && pBmpData->mnHeight == height);
// NOTE: width and height are not used in win32
OSL_ASSERT (pBmpData->pDIB == NULL);
// FIXME: could we use
// cairo_win32_surface_create_with_ddb (HDC hdc, cairo_format_t format, int width, int height);
// and
// cairo_win32_surface_create_with_dib (cairo_format_t format, int width, int height);
// instead?
//
if (pBmpData->pDIB != NULL) {
#if 0
// This code will not work anyway, as most (?) DIBs that
// come here will be in bottom-down order (upside-down)
// and in any case have a different order of colour
// channels compared to what cairo expects.
PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) GlobalLock ((HANDLE) p_BmpData->pDIB);
cairo_format_t fmt;
OSL_ASSERT (pBIH->biBitCount == 24 && pBIH->biCompression == BI_RGB);
mhDIB = p_BmpData->pDIB;
if (pBIH->biBitCount == 24 && pBIH->biCompression == BI_RGB)
{
mpSurface = cairo_image_surface_create_for_data (((unsigned char *) pBIH) + pBIH->biSize,
CAIRO_FORMAT_RGB24,
pBIH->biWidth, pBIH->biHeight,
4*((3*pBIH->biWidth-1)/4+1));
}
#else
// So just leave mpSurface to NULL, little else we can do at
// this stage. Hopefully the Win32 patch to
// cairocanvas::DeviceHelper::getSurface(BitmapSystemData&,
// const Size&) will catch the cases where this
// constructor would be called with a DIB bitmap, and we
// will never get here. At least it worked for Ballmer.ppt.
#endif
} else {
HDC hDC;
void* hOrigBitmap;
hDC = CreateCompatibleDC( NULL );
OSL_TRACE ("::cairo::cairo::Surface::Surface(): Selecting bitmap %p into DC %p", pBmpData->pDDB, hDC);
hOrigBitmap = SelectObject( hDC, (HANDLE) pBmpData->pDDB );
if (hOrigBitmap == NULL)
OSL_TRACE ("SelectObject failed: %d", GetLastError ());
mpSurface = cairo_win32_surface_create( hDC );
}
}
/**
* Surface::getDepth: Get the color depth of the Canvas surface.
*
* @return color depth
**/
int
Surface::getDepth()
{
if (mpSurface) {
switch (cairo_surface_get_content (mpSurface)) {
case CAIRO_CONTENT_ALPHA: return 8; break;
case CAIRO_CONTENT_COLOR: return 24; break;
case CAIRO_CONTENT_COLOR_ALPHA: return 32; break;
}
}
OSL_TRACE("Canvas::cairo::Surface::getDepth(): ERROR - depth unspecified!");
return -1;
}
/**
* Surface::fillSystemGraphicsData: Fill SystemGraphicsData with native surface data
* @param aSystemGraphicsData Platform native system graphics data (struct SystemGraphicsData in vcl/inc/sysdata.hxx)
*
*/
void Surface::fillSystemGraphicsData( SystemGraphicsData& aSystemGraphicsData)
{
aSystemGraphicsData.hDC = cairo_win32_surface_get_dc( mpSurface );
}
} // namespace cairo
#endif // CAIRO_HAS_WIN32_SURFACE
#endif // WNT
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