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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_cairo.cxx,v $
* $Revision: 1.8 $
*
* 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"
/****************************************************************************************
* Platform independent part of surface backends for OpenOffice.org Cairo Canvas *
* For rest of the functions, see platform specific cairo_<platform>_cairo.cxx *
****************************************************************************************/
#include "cairo_cairo.hxx"
namespace cairo
{
/**
* Surface::getCairo: Create Cairo for the Canvas surface
*
* @return new Cairo or NULL
**/
Cairo* Surface::getCairo()
{
Cairo *cr = NULL;
if (mpSurface) {
cr = cairo_create( mpSurface );
}
return cr;
}
// This is needed to distinguish support for Cairo versions < 1.2.
#if !defined (USE_CAIRO10_APIS)
/**
* Surface::~Surface: Destroy the Canvas surface
*
* Cairo itself takes care of freeing any resources, such as
* image data and other references related to the surface.
*
**/
Surface::~Surface()
{
if( mpSurface )
{
cairo_surface_destroy( mpSurface );
mpSurface = NULL;
}
}
/**
* Surface::getSimilar: Create new similar Canvas surface
* @param aContent format of the new surface (cairo_content_t from cairo/src/cairo.h)
* @param width width of the new surface
* @param height height of the new surface
*
* Creates a new Canvas surface. This should create platform native surface, even though
* generic function is used.
*
* Cairo surface from aContent (cairo_content_t)
*
* @return new surface or NULL
**/
Surface* Surface::getSimilar( Content aContent, int width, int height )
{
// This should create platform native Cairo surface on ALL platforms.
return new Surface( cairo_surface_create_similar( mpSurface, aContent, width, height ) );
// For example on Mac OS X, cairo_surface_create_similar() actually results in native surface,
// equivalent to cairo_quartz_surface_create()
}
#endif // !defined (USE_CAIRO10_APIS)
/**
* Surface::createVirtualDevice: Create new VCL virtual device
*
* Creates a new virtual device in VCL, with the current mpSurface contents as data.
* This is used by e.g. cairo_canvashelper_text.cxx to make VCL draw text on the cairo surface.
*
* @return new virtual device
**/
VirtualDevice* Surface::createVirtualDevice()
{
// struct SystemGraphicsData in vcl/inc/sysdata.hxx
SystemGraphicsData aSystemGraphicsData;
aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
fillSystemGraphicsData( aSystemGraphicsData );
/**
* Contrary to the description of
* VirtualDevice(SystemGraphicsData*, nBitCount); (in vcl/inc/virdev.hxx)
* at least X11 behaves differently, i.e. nBitCount is color depth, not just 1 or 0.
**/
return new VirtualDevice( &aSystemGraphicsData,
sal::static_int_cast<USHORT>(getDepth()) );
}
} // namespace cairo
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