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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* 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"
#include <tools/poly.hxx>
#include <vcl/metric.hxx>
#include <vcl/virdev.hxx>
#include <vcl/metric.hxx>
#include <vcl/canvastools.hxx>
#include <tools/diagnose_ex.h>
#include <boost/scoped_array.hpp>
#include <boost/bind.hpp>
#include <com/sun/star/rendering/FontRequest.hpp>
#include <com/sun/star/rendering/XCanvasFont.hpp>
#include <comphelper/sequence.hxx>
#include <comphelper/scopeguard.hxx>
#include <tools/color.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <canvas/canvastools.hxx>
#include <canvas/debug.hxx>
#include "dx_impltools.hxx"
#include <vcl/sysdata.hxx>
#include <i18npool/mslangid.hxx>
#include "dx_textlayout_drawhelper.hxx"
#include "dx_bitmap.hxx"
#include "dx_canvasfont.hxx"
class ::com::sun::star::rendering::XCanvasFont;
using namespace ::com::sun::star;
//////////////////////////////////////////////////////////////////////////////
namespace dxcanvas
{
class DXBitmap;
TextLayoutDrawHelper::TextLayoutDrawHelper(
const uno::Reference< rendering::XGraphicDevice >& xGraphicDevice ) :
mxGraphicDevice(xGraphicDevice)
{
}
TextLayoutDrawHelper::~TextLayoutDrawHelper()
{
}
void TextLayoutDrawHelper::drawText(
const GraphicsSharedPtr& rGraphics,
const ::com::sun::star::rendering::ViewState& rViewState,
const ::com::sun::star::rendering::RenderState& rRenderState,
const ::basegfx::B2ISize& rOutputOffset,
const ::com::sun::star::rendering::StringContext& rText,
const ::com::sun::star::uno::Sequence< double >& rLogicalAdvancements,
const ::com::sun::star::uno::Reference<
::com::sun::star::rendering::XCanvasFont >& rCanvasFont,
const ::com::sun::star::geometry::Matrix2D& rFontMatrix,
bool bAlphaSurface )
{
HDC hdc = rGraphics->GetHDC();
// issue an ReleaseHDC() when leaving the scope
const ::comphelper::ScopeGuard aGuard(
boost::bind( &Gdiplus::Graphics::ReleaseHDC,
rGraphics.get(),
hdc ));
SystemGraphicsData aSystemGraphicsData;
aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
aSystemGraphicsData.hDC = reinterpret_cast< ::HDC >(hdc);
VirtualDevice aVirtualDevice(&aSystemGraphicsData, 0);
// disable font antialiasing - GDI does not handle alpha
// surfaces properly.
if( bAlphaSurface )
aVirtualDevice.SetAntialiasing(ANTIALIASING_DISABLE_TEXT);
if(rText.Length)
{
sal_Bool test = mxGraphicDevice.is();
ENSURE_OR_THROW( test,
"TextLayoutDrawHelper::drawText(): Invalid GraphicDevice" );
// set text color. Make sure to remove transparence part first.
Color aColor( COL_WHITE );
if( rRenderState.DeviceColor.getLength() > 2 )
aColor = ::vcl::unotools::doubleSequenceToColor(
rRenderState.DeviceColor,
mxGraphicDevice->getDeviceColorSpace());
aColor.SetTransparency(0);
aVirtualDevice.SetTextColor(aColor);
// create the font
const ::com::sun::star::rendering::FontRequest& rFontRequest = rCanvasFont->getFontRequest();
Font aFont(
rFontRequest.FontDescription.FamilyName,
rFontRequest.FontDescription.StyleName,
Size( 0, ::basegfx::fround(rFontRequest.CellSize)));
aFont.SetAlign( ALIGN_BASELINE );
aFont.SetCharSet( (rFontRequest.FontDescription.IsSymbolFont==com::sun::star::util::TriState_YES) ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE );
aFont.SetVertical( (rFontRequest.FontDescription.IsVertical==com::sun::star::util::TriState_YES) ? TRUE : FALSE );
aFont.SetWeight( static_cast<FontWeight>(rFontRequest.FontDescription.FontDescription.Weight) );
aFont.SetItalic( (rFontRequest.FontDescription.FontDescription.Letterform<=8) ? ITALIC_NONE : ITALIC_NORMAL );
aFont.SetPitch(
rFontRequest.FontDescription.FontDescription.Proportion == rendering::PanoseProportion::MONO_SPACED
? PITCH_FIXED : PITCH_VARIABLE);
aFont.SetLanguage(MsLangId::convertLocaleToLanguage(rFontRequest.Locale));
// setup font color
aFont.SetColor( aColor );
aFont.SetFillColor( aColor );
// adjust to stretched font
if(!::rtl::math::approxEqual(rFontMatrix.m00, rFontMatrix.m11))
{
const Size aSize = aVirtualDevice.GetFontMetric( aFont ).GetSize();
const double fDividend( rFontMatrix.m10 + rFontMatrix.m11 );
double fStretch = (rFontMatrix.m00 + rFontMatrix.m01);
if( !::basegfx::fTools::equalZero( fDividend) )
fStretch /= fDividend;
const sal_Int32 nNewWidth = ::basegfx::fround( aSize.Width() * fStretch );
aFont.SetWidth( nNewWidth );
}
// set font
aVirtualDevice.SetFont(aFont);
// create world transformation matrix
::basegfx::B2DHomMatrix aWorldTransform;
::canvas::tools::mergeViewAndRenderTransform(aWorldTransform, rViewState, rRenderState);
if(!rOutputOffset.equalZero())
{
aWorldTransform.translate(rOutputOffset.getX(), rOutputOffset.getY());
}
// set ViewState clipping
if(rViewState.Clip.is())
{
::basegfx::B2DPolyPolygon aClipPoly(dxcanvas::tools::polyPolygonFromXPolyPolygon2D(rViewState.Clip));
::basegfx::B2DHomMatrix aMatrix;
::basegfx::unotools::homMatrixFromAffineMatrix(aMatrix, rViewState.AffineTransform );
if(!rOutputOffset.equalZero())
{
aMatrix.translate(rOutputOffset.getX(), rOutputOffset.getY());
}
aClipPoly.transform(aMatrix);
const Region& rClipRegion = Region(PolyPolygon(aClipPoly));
aVirtualDevice.IntersectClipRegion(rClipRegion);
}
if(rRenderState.Clip.is())
{
::basegfx::B2DPolyPolygon aClipPoly(dxcanvas::tools::polyPolygonFromXPolyPolygon2D(rRenderState.Clip));
aClipPoly.transform(aWorldTransform);
const Region& rClipRegion = Region(PolyPolygon(aClipPoly));
aVirtualDevice.IntersectClipRegion(rClipRegion);
}
// set world transform
XFORM aXForm;
aXForm.eM11 = (FLOAT)aWorldTransform.get(0, 0);
aXForm.eM12 = (FLOAT)aWorldTransform.get(1, 0);
aXForm.eM21 = (FLOAT)aWorldTransform.get(0, 1);
aXForm.eM22 = (FLOAT)aWorldTransform.get(1, 1);
aXForm.eDx = (FLOAT)aWorldTransform.get(0, 2);
aXForm.eDy = (FLOAT)aWorldTransform.get(1, 2);
// TODO(F3): This is NOT supported on 95/98/ME!
SetGraphicsMode(hdc, GM_ADVANCED);
SetTextAlign(hdc, TA_BASELINE);
SetWorldTransform(hdc, &aXForm);
// use a empty StartPosition for text rendering
const Point aEmptyPoint(0, 0);
// create the String
const String aText(rText.Text.getStr());
if( rLogicalAdvancements.getLength() )
{
// create the DXArray
const sal_Int32 nLen( rLogicalAdvancements.getLength() );
::boost::scoped_array<sal_Int32> pDXArray( new sal_Int32[nLen] );
for( sal_Int32 i=0; i<nLen; ++i )
pDXArray[i] = basegfx::fround( rLogicalAdvancements[i] );
// draw the String
aVirtualDevice.DrawTextArray( aEmptyPoint,
aText,
pDXArray.get(),
(xub_StrLen)rText.StartPosition,
(xub_StrLen)rText.Length );
}
else
{
// draw the String
aVirtualDevice.DrawText( aEmptyPoint,
aText,
(xub_StrLen)rText.StartPosition,
(xub_StrLen)rText.Length );
}
}
}
geometry::RealRectangle2D TextLayoutDrawHelper::queryTextBounds( const rendering::StringContext& rText,
const uno::Sequence< double >& rLogicalAdvancements,
const uno::Reference< rendering::XCanvasFont >& rCanvasFont,
const geometry::Matrix2D& rFontMatrix )
{
if(!(rText.Length))
return geometry::RealRectangle2D();
// TODO(F1): Fetching default screen DC here, will yield wrong
// metrics when e.g. formatting for a printer!
SystemGraphicsData aSystemGraphicsData;
aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
aSystemGraphicsData.hDC = reinterpret_cast< ::HDC >(GetDC( NULL ));
VirtualDevice aVirtualDevice(&aSystemGraphicsData, 0);
// create the font
const ::com::sun::star::rendering::FontRequest& rFontRequest = rCanvasFont->getFontRequest();
Font aFont(
rFontRequest.FontDescription.FamilyName,
rFontRequest.FontDescription.StyleName,
Size( 0, ::basegfx::fround(rFontRequest.CellSize)));
aFont.SetAlign( ALIGN_BASELINE );
aFont.SetCharSet( (rFontRequest.FontDescription.IsSymbolFont==com::sun::star::util::TriState_YES) ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE );
aFont.SetVertical( (rFontRequest.FontDescription.IsVertical==com::sun::star::util::TriState_YES) ? TRUE : FALSE );
aFont.SetWeight( static_cast<FontWeight>(rFontRequest.FontDescription.FontDescription.Weight) );
aFont.SetItalic( (rFontRequest.FontDescription.FontDescription.Letterform<=8) ? ITALIC_NONE : ITALIC_NORMAL );
aFont.SetPitch(
rFontRequest.FontDescription.FontDescription.Proportion == rendering::PanoseProportion::MONO_SPACED
? PITCH_FIXED : PITCH_VARIABLE);
// adjust to stretched font
if(!::rtl::math::approxEqual(rFontMatrix.m00, rFontMatrix.m11))
{
const Size aSize = aVirtualDevice.GetFontMetric( aFont ).GetSize();
const double fDividend( rFontMatrix.m10 + rFontMatrix.m11 );
double fStretch = (rFontMatrix.m00 + rFontMatrix.m01);
if( !::basegfx::fTools::equalZero( fDividend) )
fStretch /= fDividend;
const sal_Int32 nNewWidth = ::basegfx::fround( aSize.Width() * fStretch );
aFont.SetWidth( nNewWidth );
}
// set font
aVirtualDevice.SetFont(aFont);
// need metrics for Y offset, the XCanvas always renders
// relative to baseline
const ::FontMetric& aMetric( aVirtualDevice.GetFontMetric() );
const sal_Int32 nAboveBaseline( -aMetric.GetIntLeading() - aMetric.GetAscent() );
const sal_Int32 nBelowBaseline( aMetric.GetDescent() );
if( rLogicalAdvancements.getLength() )
{
return geometry::RealRectangle2D( 0, nAboveBaseline,
rLogicalAdvancements[ rLogicalAdvancements.getLength()-1 ],
nBelowBaseline );
}
else
{
return geometry::RealRectangle2D( 0, nAboveBaseline,
aVirtualDevice.GetTextWidth(
rText.Text,
::canvas::tools::numeric_cast<USHORT>(rText.StartPosition),
::canvas::tools::numeric_cast<USHORT>(rText.Length) ),
nBelowBaseline );
}
}
}
// eof
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