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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_quartz_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 QUARTZ
/************************************************************************
* Mac OS X/Quartz surface backend for OpenOffice.org Cairo Canvas *
************************************************************************/
#include <osl/diagnose.h>
#include "cairo_cairo.hxx"
#if defined CAIRO_HAS_QUARTZ_SURFACE
// premac.h/postmac.h needed because cairo-quartz.h includes Carbon/Carbon.h
#include "premac.h"
#include <cairo-quartz.h>
#include "postmac.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 )
{
// Necessary, context is lost otherwise
CGContextRetain( cairo_quartz_surface_get_cg_context(pSurface) ); // == NULL for non-native surfaces
}
/**
* 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 )
{
OSL_TRACE("Canvas::cairo::Surface(const void*, x:%d, y:%d, w:%d, h:%d): New Surface for window", x, y, width, height);
// on Mac OS X / Quartz we are not drawing directly to the screen, but via regular CGContextRef.
// The actual drawing to NSView (i.e. screen) is done in Surface::flush()
// HACK: currently initial size for windowsurface is 0x0, which is not possible for us.
if (width == 0 || height == 0) {
NSView* mpView = (NSView *) pSysData->pView;
width = [mpView bounds].size.width;
height = [mpView bounds].size.height;
OSL_TRACE("Canvas::cairo::Surface(): BUG!! size is ZERO! fixing to %d x %d...", width, height);
}
// create a generic surface. Although View/Window is ARGB32, we however do all drawing => RGB24
mpSurface = cairo_quartz_surface_create(CAIRO_FORMAT_ARGB32, width, height);
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_TRACE("Canvas::cairo::Surface(pBmpData: %p, w:%d, h:%d): New native image surface.", pBmpData, width, height);
OSL_ASSERT (pBmpData->mnWidth == width && pBmpData->mnHeight == height);
CGContextRef rContext = (CGContextRef) pBmpData->rImageContext;
// ensure kCGBitmapByteOrder32Host flag, otherwise Cairo breaks
OSL_ASSERT ((CGBitmapContextGetBitmapInfo(rContext) & kCGBitmapByteOrderMask) == kCGBitmapByteOrder32Host);
// create image surface based on CGContext
mpSurface = cairo_quartz_surface_create_for_cg_context( rContext, width, height);
// Necessary, context is lost otherwise
CGContextRetain(rContext);
}
/**
* 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::%s(): ERROR - depth unspecified!",__func__);
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.rCGContext = cairo_quartz_surface_get_cg_context( mpSurface );
}
/** Surface::flush Flush the platform native window
*
* @param pSysData Platform native system environment data (struct SystemEnvData in vcl/inc/vcl/sysdata.hxx)
*
**/
void Surface::flush(const SystemEnvData* pSysData)
{
OSL_TRACE("Canvas::cairo::%s(): flush to NSView",__func__);
CGContextRef mrContext = cairo_quartz_surface_get_cg_context(mpSurface);
// write to the NSView in pSysData
NSView* mpView = (NSView *) pSysData->pView;
[mpView lockFocus];
/**
* This code is using same screen update code as in VCL (esp. AquaSalGraphics::UpdateWindow() )
*/
CGContextRef rViewContext = reinterpret_cast<CGContextRef>([[NSGraphicsContext currentContext] graphicsPort]);
CGImageRef xImage = CGBitmapContextCreateImage (mrContext);
CGContextDrawImage(rViewContext, CGRectMake( 0, 0, CGImageGetWidth(xImage), CGImageGetHeight(xImage)), xImage);
CGImageRelease( xImage );
CGContextFlush( rViewContext );
[mpView unlockFocus];
}
} // namespace cairo
#endif // CAIRO_HAS_QUARTZ_SURFACE
#endif // QUARTZ
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