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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#define _WIN32_WINNT 0x0500
#ifdef WNT
/************************************************************************
* Win32 surface backend for OpenOffice.org Cairo Canvas *
************************************************************************/
#include <osl/diagnose.h>
#include <vcl/bitmap.hxx>
#include <vcl/virdev.hxx>
#include <vcl/sysdata.hxx>
#include "cairo_win32_cairo.hxx"
#ifdef CAIRO_HAS_WIN32_SURFACE
namespace cairo
{
#include <cairo-win32.h>
bool IsCairoWorking( OutputDevice* )
{
// trivially true for Windows
return true;
}
/**
* 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
**/
Win32Surface::Win32Surface( const CairoSurfaceSharedPtr& pSurface ) :
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
*
* 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
**/
Win32Surface::Win32Surface( HDC hDC, int x, int y) :
mpSurface(
cairo_win32_surface_create(hDC),
&cairo_surface_destroy)
{
cairo_surface_set_device_offset( mpSurface.get(), x, y );
}
/**
* Surface::Surface: Create platfrom native Canvas surface from BitmapSystemData
* @param pBmpData Platform native image data (struct BitmapSystemData in vcl/inc/bitmap.hxx)
*
* Create a surface based on image data on pBmpData
*
* Set the mpSurface to the new surface or NULL
**/
Win32Surface::Win32Surface( const BitmapSystemData& rBmpData ) :
mpSurface()
{
OSL_ASSERT(rBmpData.pDIB == NULL);
if(rBmpData.pDIB != NULL)
{
// 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.
}
else
{
HDC hDC = CreateCompatibleDC(NULL);
void* hOrigBitmap;
OSL_TRACE ("Surface::Surface(): Selecting bitmap %p into DC %p", rBmpData.pDDB, hDC);
hOrigBitmap = SelectObject( hDC, (HANDLE)rBmpData.pDDB );
if(hOrigBitmap == NULL)
OSL_TRACE ("SelectObject failed: %d", GetLastError ());
mpSurface.reset(
cairo_win32_surface_create(hDC),
&cairo_surface_destroy);
}
}
/**
* Surface::getCairo: Create Cairo (drawing object) for the Canvas surface
*
* @return new Cairo or NULL
**/
CairoSharedPtr Win32Surface::getCairo() const
{
return CairoSharedPtr( cairo_create(mpSurface.get()),
&cairo_destroy );
}
/**
* 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 normally creates platform native surface, even though
* generic function is used.
*
* Cairo surface from aContent (cairo_content_t)
*
* @return new surface or NULL
**/
SurfaceSharedPtr Win32Surface::getSimilar( Content aContent, int width, int height ) const
{
return SurfaceSharedPtr(
new Win32Surface(
CairoSurfaceSharedPtr(
cairo_surface_create_similar( mpSurface.get(), aContent, width, height ),
&cairo_surface_destroy )));
}
/**
* Surface::Resize: Resizes the Canvas surface.
* @param width new width of the surface
* @param height new height of the surface
*
* Only used on X11.
*
* @return The new surface or NULL
**/
void Win32Surface::Resize( int /*width*/, int /*height*/ )
{
OSL_FAIL("not supposed to be called!");
}
void Win32Surface::flush() const
{
GdiFlush();
}
/**
* Surface::getDepth: Get the color depth of the Canvas surface.
*
* @return color depth
**/
int Win32Surface::getDepth() const
{
if (mpSurface)
{
switch (cairo_surface_get_content (mpSurface.get()))
{
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;
}
/**
* cairo::createVirtualDevice: Create a VCL virtual device for the CGContext in the cairo Surface
*
* @return The new virtual device
**/
boost::shared_ptr<VirtualDevice> Win32Surface::createVirtualDevice() const
{
SystemGraphicsData aSystemGraphicsData;
aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
aSystemGraphicsData.hDC = cairo_win32_surface_get_dc( mpSurface.get() );
return boost::shared_ptr<VirtualDevice>(
new VirtualDevice( &aSystemGraphicsData, sal::static_int_cast<USHORT>(getDepth()) ));
}
/**
* cairo::createSurface: Create generic Canvas surface using given Cairo Surface
*
* @param rSurface Cairo Surface
*
* @return new Surface
*/
SurfaceSharedPtr createSurface( const CairoSurfaceSharedPtr& rSurface )
{
return SurfaceSharedPtr(new Win32Surface(rSurface));
}
/**
* cairo::createSurface: Create Canvas surface using given VCL Window or Virtualdevice
*
* @param rSurface Cairo Surface
*
* For VCL Window, use platform native system environment data (struct SystemEnvData in vcl/inc/sysdata.hxx)
* For VCL Virtualdevice, use platform native system graphics data (struct SystemGraphicsData in vcl/inc/sysdata.hxx)
*
* @return new Surface
*/
SurfaceSharedPtr createSurface( const OutputDevice& rRefDevice,
int x, int y, int /* width */, int /* height */)
{
SurfaceSharedPtr surf;
if( rRefDevice.GetOutDevType() == OUTDEV_WINDOW )
{
const Window &rWindow = (const Window &) rRefDevice;
const SystemEnvData* pSysData = GetSysData(&rWindow);
if (pSysData && pSysData->hWnd)
surf = SurfaceSharedPtr(new Win32Surface(GetDC((HWND) pSysData->hWnd), x, y));
}
else if( rRefDevice.GetOutDevType() == OUTDEV_VIRDEV )
{
SystemGraphicsData aSysData = ((const VirtualDevice&) rRefDevice).GetSystemGfxData();
if (aSysData.hDC)
surf = SurfaceSharedPtr(new Win32Surface((HDC) aSysData.hDC, x, y));
}
return surf;
}
/**
* cairo::createBitmapSurface: Create platfrom native Canvas surface from BitmapSystemData
* @param OutputDevice (not used)
* @param rData Platform native image data (struct BitmapSystemData in vcl/inc/bitmap.hxx)
* @param rSize width and height of the new surface
*
* Create a surface based on image data on rData
*
* @return new surface or empty surface
**/
SurfaceSharedPtr createBitmapSurface( const OutputDevice& /* rRefDevice */,
const BitmapSystemData& rData,
const Size& rSize )
{
OSL_TRACE( "requested size: %d x %d available size: %d x %d",
rSize.Width(), rSize.Height(), rData.mnWidth, rData.mnHeight );
if ( rData.mnWidth == rSize.Width() && rData.mnHeight == rSize.Height() )
return SurfaceSharedPtr(new Win32Surface( rData ));
else
return SurfaceSharedPtr();
}
/**
* cairo::ucs4toindex: Convert ucs4 char to glyph index
* @param ucs4 an ucs4 char
* @param hfont current font
*
* @return true if successful
**/
unsigned long ucs4toindex(unsigned int ucs4, HFONT hfont)
{
wchar_t unicode[2];
WORD glyph_index;
HDC hdc = NULL;
hdc = CreateCompatibleDC (NULL);
if (!hdc) return 0;
if (!SetGraphicsMode (hdc, GM_ADVANCED))
{
DeleteDC (hdc);
return 0;
}
SelectObject (hdc, hfont);
SetMapMode (hdc, MM_TEXT);
unicode[0] = ucs4;
unicode[1] = 0;
if (GetGlyphIndicesW (hdc, unicode, 1, &glyph_index, 0) == GDI_ERROR)
{
glyph_index = 0;
}
DeleteDC (hdc);
return glyph_index;
}
} // namespace cairo
#endif // CAIRO_HAS_WIN32_SURFACE
#endif // WNT
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */