/* -*- 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 .
*/
#include <sal/config.h>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <com/sun/star/lang/XServiceName.hpp>
#include <com/sun/star/rendering/CompositeOperation.hpp>
#include <com/sun/star/rendering/PanoseLetterForm.hpp>
#include <com/sun/star/rendering/PanoseWeight.hpp>
#include <com/sun/star/rendering/XSimpleCanvas.hpp>
#include <comphelper/servicedecl.hxx>
#include <cppuhelper/basemutex.hxx>
#include <cppuhelper/compbase.hxx>
#include <cppuhelper/factory.hxx>
#include <cppuhelper/implementationentry.hxx>
#include <o3tl/lazy_update.hxx>
#include <canvas/canvastools.hxx>
#include <functional>
#define SERVICE_NAME "com.sun.star.rendering.SimpleCanvas"
using namespace ::com::sun::star;
using namespace canvas;
namespace
{
inline uno::Sequence< double > color2Sequence( sal_Int32 nColor )
{
// TODO(F3): Color management
uno::Sequence< double > aRes( 4 );
aRes[0] = static_cast<sal_uInt8>( (nColor&0xFF000000U) >> 24U ) / 255.0;
aRes[1] = static_cast<sal_uInt8>( (nColor&0x00FF0000U) >> 16U ) / 255.0;
aRes[2] = static_cast<sal_uInt8>( (nColor&0x0000FF00U) >> 8U ) / 255.0;
aRes[3] = static_cast<sal_uInt8>( (nColor&0x000000FFU) ) / 255.0;
return aRes;
}
inline uno::Reference< rendering::XPolyPolygon2D > rect2Poly( uno::Reference<rendering::XGraphicDevice> const& xDevice,
geometry::RealRectangle2D const& rRect )
{
uno::Sequence< geometry::RealPoint2D > rectSequence( 4 );
geometry::RealPoint2D* pOutput = rectSequence.getArray();
pOutput[0] = geometry::RealPoint2D( rRect.X1, rRect.Y1 );
pOutput[1] = geometry::RealPoint2D( rRect.X2, rRect.Y1 );
pOutput[2] = geometry::RealPoint2D( rRect.X2, rRect.Y2 );
pOutput[3] = geometry::RealPoint2D( rRect.X1, rRect.Y2 );
uno::Sequence< uno::Sequence< geometry::RealPoint2D > > sequenceSequence( 1 );
sequenceSequence[0] = rectSequence;
uno::Reference< rendering::XPolyPolygon2D > xRes(
xDevice->createCompatibleLinePolyPolygon( sequenceSequence ),
uno::UNO_QUERY );
if( xRes.is() )
xRes->setClosed( 0, true );
return xRes;
}
struct SimpleRenderState
{
o3tl::LazyUpdate<sal_Int32,
uno::Sequence<double>,
decltype(&color2Sequence)> m_aPenColor;
o3tl::LazyUpdate<sal_Int32,
uno::Sequence<double>,
decltype(&color2Sequence)> m_aFillColor;
o3tl::LazyUpdate<geometry::RealRectangle2D,
uno::Reference< rendering::XPolyPolygon2D >,
std::function<uno::Reference<rendering::XPolyPolygon2D> (geometry::RealRectangle2D)> > m_aRectClip;
geometry::AffineMatrix2D m_aTransformation;
explicit SimpleRenderState( uno::Reference<rendering::XGraphicDevice> const& xDevice ) :
m_aPenColor( &color2Sequence),
m_aFillColor( &color2Sequence ),
m_aRectClip( [&xDevice](geometry::RealRectangle2D const& rRect) { return rect2Poly(xDevice, rRect); } ),
m_aTransformation()
{
tools::setIdentityAffineMatrix2D( m_aTransformation );
}
};
typedef ::cppu::WeakComponentImplHelper< css::rendering::XSimpleCanvas,
css::lang::XServiceName > SimpleCanvasBase;
class SimpleCanvasImpl : private cppu::BaseMutex,
public SimpleCanvasBase
{
private:
bool isStrokingEnabled() const
{
return maRenderState.m_aPenColor.getInValue() && sal_Int32(0xFF) != 0;
}
rendering::RenderState createStrokingRenderState() const
{
return rendering::RenderState(maRenderState.m_aTransformation,
*maRenderState.m_aRectClip,
*maRenderState.m_aPenColor,
rendering::CompositeOperation::OVER);
}
bool isFillingEnabled() const
{
return maRenderState.m_aFillColor.getInValue() && sal_Int32(0xFF) != 0;
}
rendering::RenderState createFillingRenderState() const
{
return rendering::RenderState(maRenderState.m_aTransformation,
*maRenderState.m_aRectClip,
*maRenderState.m_aFillColor,
rendering::CompositeOperation::OVER);
}
static uno::Reference<rendering::XCanvas> grabCanvas( uno::Sequence<uno::Any> const& rArgs )
{
uno::Reference<rendering::XCanvas> xRet;
// can't do much without an XCanvas, can't we?
if( rArgs.getLength() < 1 )
throw lang::IllegalArgumentException();
xRet.set( rArgs[0], uno::UNO_QUERY );
// can't do much without an XCanvas, can't we?
if( !xRet.is() )
throw lang::IllegalArgumentException();
return xRet;
}
public:
SimpleCanvasImpl( const uno::Sequence< uno::Any >& aArguments,
const uno::Reference< uno::XComponentContext >& ) :
SimpleCanvasBase( m_aMutex ),
mxCanvas( grabCanvas(aArguments) ),
maFont([this](rendering::FontRequest const& rFontRequest) {
return mxCanvas->createFont(rFontRequest,
uno::Sequence< beans::PropertyValue >(),
geometry::Matrix2D()); } ),
maViewState(),
maRenderState( mxCanvas->getDevice() )
{
tools::initViewState(maViewState);
}
private:
// Ifc XServiceName
virtual OUString SAL_CALL getServiceName( ) override
{
return OUString( SERVICE_NAME );
}
// Ifc XSimpleCanvas
virtual void SAL_CALL selectFont( const OUString& sFontName,
double size,
sal_Bool bold,
sal_Bool italic ) override
{
::osl::MutexGuard aGuard( m_aMutex );
maFont->FontDescription.FamilyName = sFontName;
maFont->CellSize = size;
maFont->FontDescription.FontDescription.Weight =
bold ? rendering::PanoseWeight::BOLD : rendering::PanoseWeight::MEDIUM;
maFont->FontDescription.FontDescription.Letterform =
italic ? rendering::PanoseLetterForm::OBLIQUE_CONTACT : rendering::PanoseLetterForm::ANYTHING;
}
virtual void SAL_CALL setPenColor( ::sal_Int32 nsRgbaColor ) override
{
::osl::MutexGuard aGuard( m_aMutex );
*(maRenderState.m_aPenColor) = nsRgbaColor;
}
virtual void SAL_CALL setFillColor( ::sal_Int32 nsRgbaColor ) override
{
::osl::MutexGuard aGuard( m_aMutex );
*(maRenderState.m_aFillColor) = nsRgbaColor;
}
virtual void SAL_CALL setRectClip( const geometry::RealRectangle2D& aRect ) override
{
::osl::MutexGuard aGuard( m_aMutex );
*(maRenderState.m_aRectClip) = aRect;
}
virtual void SAL_CALL setTransformation( const geometry::AffineMatrix2D& aTransform ) override
{
::osl::MutexGuard aGuard( m_aMutex );
maRenderState.m_aTransformation = aTransform;
}
virtual void SAL_CALL drawPixel( const geometry::RealPoint2D& aPoint ) override
{
::osl::MutexGuard aGuard( m_aMutex );
mxCanvas->drawPoint(aPoint,
maViewState,
createFillingRenderState());
}
virtual void SAL_CALL drawLine( const geometry::RealPoint2D& aStartPoint,
const geometry::RealPoint2D& aEndPoint ) override
{
::osl::MutexGuard aGuard( m_aMutex );
mxCanvas->drawLine(aStartPoint,
aEndPoint,
maViewState,
createStrokingRenderState());
}
virtual void SAL_CALL drawRect( const geometry::RealRectangle2D& aRect ) override
{
::osl::MutexGuard aGuard( m_aMutex );
uno::Reference< rendering::XPolyPolygon2D > xPoly(
rect2Poly( mxCanvas->getDevice(),
aRect));
if( isFillingEnabled() )
mxCanvas->drawPolyPolygon(xPoly,
maViewState,
createFillingRenderState());
if( isStrokingEnabled() )
mxCanvas->drawPolyPolygon(xPoly,
maViewState,
createStrokingRenderState());
}
virtual void SAL_CALL drawPolyPolygon( const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon ) override
{
::osl::MutexGuard aGuard( m_aMutex );
if( isFillingEnabled() )
mxCanvas->drawPolyPolygon(xPolyPolygon,
maViewState,
createFillingRenderState());
if( isStrokingEnabled() )
mxCanvas->drawPolyPolygon(xPolyPolygon,
maViewState,
createStrokingRenderState());
}
virtual void SAL_CALL drawText( const rendering::StringContext& aText,
const geometry::RealPoint2D& aOutPos,
::sal_Int8 nTextDirection ) override
{
::osl::MutexGuard aGuard( m_aMutex );
const basegfx::B2DHomMatrix offsetTransform(basegfx::utils::createTranslateB2DHomMatrix(aOutPos.X,aOutPos.Y));
rendering::RenderState aRenderState( createStrokingRenderState() );
tools::appendToRenderState(aRenderState, offsetTransform);
mxCanvas->drawText(aText,
maFont.getOutValue(),
maViewState,
aRenderState,
nTextDirection);
}
virtual void SAL_CALL drawBitmap( const uno::Reference< rendering::XBitmap >& xBitmap,
const geometry::RealPoint2D& aLeftTop ) override
{
::osl::MutexGuard aGuard( m_aMutex );
const basegfx::B2DHomMatrix offsetTransform(basegfx::utils::createTranslateB2DHomMatrix(aLeftTop.X,aLeftTop.Y));
rendering::RenderState aRenderState( createStrokingRenderState() );
tools::appendToRenderState(aRenderState, offsetTransform);
mxCanvas->drawBitmap(xBitmap,maViewState,aRenderState);
}
virtual uno::Reference< rendering::XGraphicDevice > SAL_CALL getDevice( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return mxCanvas->getDevice();
}
virtual uno::Reference< rendering::XCanvas > SAL_CALL getCanvas( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return mxCanvas;
}
virtual rendering::FontMetrics SAL_CALL getFontMetrics( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return maFont.getOutValue()->getFontMetrics();
}
virtual uno::Reference< rendering::XCanvasFont > SAL_CALL getCurrentFont( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return maFont.getOutValue();
}
virtual ::sal_Int32 SAL_CALL getCurrentPenColor( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return maRenderState.m_aPenColor.getInValue();
}
virtual ::sal_Int32 SAL_CALL getCurrentFillColor( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return maRenderState.m_aFillColor.getInValue();
}
virtual geometry::RealRectangle2D SAL_CALL getCurrentClipRect( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return maRenderState.m_aRectClip.getInValue();
}
virtual geometry::AffineMatrix2D SAL_CALL getCurrentTransformation( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return maRenderState.m_aTransformation;
}
virtual rendering::ViewState SAL_CALL getCurrentViewState( ) override
{
::osl::MutexGuard aGuard( m_aMutex );
return maViewState;
}
virtual rendering::RenderState SAL_CALL getCurrentRenderState( sal_Bool bUseFillColor ) override
{
::osl::MutexGuard aGuard( m_aMutex );
if( bUseFillColor )
return createFillingRenderState();
else
return createStrokingRenderState();
}
typedef o3tl::LazyUpdate<
rendering::FontRequest,
uno::Reference< rendering::XCanvasFont >,
std::function<uno::Reference<rendering::XCanvasFont> (rendering::FontRequest)> > SimpleFont;
uno::Reference<rendering::XCanvas> mxCanvas;
SimpleFont maFont;
rendering::ViewState maViewState;
SimpleRenderState maRenderState;
};
namespace sdecl = comphelper::service_decl;
const sdecl::ServiceDecl simpleCanvasDecl(
sdecl::class_<SimpleCanvasImpl, sdecl::with_args<true> >(),
"com.sun.star.comp.rendering.SimpleCanvas",
SERVICE_NAME );
}
// The C shared lib entry points
extern "C" SAL_DLLPUBLIC_EXPORT void* simplecanvas_component_getFactory( sal_Char const* pImplName,
void*, void* )
{
return sdecl::component_getFactoryHelper( pImplName, {&simpleCanvasDecl} );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V560 A part of conditional expression is always true: sal_Int32(0xFF) != 0.
↑ V560 A part of conditional expression is always true: sal_Int32(0xFF) != 0.