e5ec630414
also clean-up and 'standardize' the include sections of canvas' source code Change-Id: Ib437a41ea41ae2ea6528f755ae5b2828775aaf73 Reviewed-on: https://gerrit.libreoffice.org/17633 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
483 lines
17 KiB
C++
483 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <tools/diagnose_ex.h>
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <basegfx/numeric/ftools.hxx>
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#include <basegfx/tools/canvastools.hxx>
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#include <com/sun/star/rendering/CompositeOperation.hpp>
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#include <com/sun/star/rendering/TextDirection.hpp>
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#include <cppuhelper/supportsservice.hxx>
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#include <vcl/metric.hxx>
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#include <vcl/virdev.hxx>
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#include <canvas/canvastools.hxx>
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#include "impltools.hxx"
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#include "textlayout.hxx"
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#include <memory>
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using namespace ::com::sun::star;
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namespace vclcanvas
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{
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namespace
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{
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void setupLayoutMode( OutputDevice& rOutDev,
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sal_Int8 nTextDirection )
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{
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// TODO(P3): avoid if already correctly set
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ComplexTextLayoutMode nLayoutMode = TEXT_LAYOUT_DEFAULT;
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switch( nTextDirection )
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{
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case rendering::TextDirection::WEAK_LEFT_TO_RIGHT:
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break;
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case rendering::TextDirection::STRONG_LEFT_TO_RIGHT:
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nLayoutMode = TEXT_LAYOUT_BIDI_STRONG;
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break;
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case rendering::TextDirection::WEAK_RIGHT_TO_LEFT:
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nLayoutMode = TEXT_LAYOUT_BIDI_RTL;
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break;
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case rendering::TextDirection::STRONG_RIGHT_TO_LEFT:
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nLayoutMode = TEXT_LAYOUT_BIDI_RTL | TEXT_LAYOUT_BIDI_STRONG;
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break;
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default:
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break;
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}
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// set calculated layout mode. Origin is always the left edge,
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// as required at the API spec
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rOutDev.SetLayoutMode( nLayoutMode | TEXT_LAYOUT_TEXTORIGIN_LEFT );
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}
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}
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TextLayout::TextLayout( const rendering::StringContext& aText,
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sal_Int8 nDirection,
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sal_Int64 nRandomSeed,
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const CanvasFont::Reference& rFont,
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const uno::Reference<rendering::XGraphicDevice>& xDevice,
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const OutDevProviderSharedPtr& rOutDev ) :
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TextLayout_Base( m_aMutex ),
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maText( aText ),
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maLogicalAdvancements(),
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mpFont( rFont ),
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mxDevice( xDevice ),
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mpOutDevProvider( rOutDev ),
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mnTextDirection( nDirection )
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{
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(void)nRandomSeed;
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}
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void SAL_CALL TextLayout::disposing()
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{
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SolarMutexGuard aGuard;
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mpOutDevProvider.reset();
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mxDevice.clear();
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mpFont.clear();
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}
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// XTextLayout
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uno::Sequence< uno::Reference< rendering::XPolyPolygon2D > > SAL_CALL TextLayout::queryTextShapes( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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OutputDevice& rOutDev = mpOutDevProvider->getOutDev();
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ScopedVclPtrInstance< VirtualDevice > pVDev( rOutDev );
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pVDev->SetFont( mpFont->getVCLFont() );
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setupLayoutMode( *pVDev.get(), mnTextDirection );
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const rendering::ViewState aViewState(
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geometry::AffineMatrix2D(1,0,0, 0,1,0),
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NULL);
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rendering::RenderState aRenderState (
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geometry::AffineMatrix2D(1,0,0,0,1,0),
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NULL,
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uno::Sequence<double>(4),
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rendering::CompositeOperation::SOURCE);
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::std::unique_ptr< long []> aOffsets(new long[maLogicalAdvancements.getLength()]);
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setupTextOffsets(aOffsets.get(), maLogicalAdvancements, aViewState, aRenderState);
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uno::Sequence< uno::Reference< rendering::XPolyPolygon2D> > aOutlineSequence;
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::basegfx::B2DPolyPolygonVector aOutlines;
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if (pVDev->GetTextOutlines(
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aOutlines,
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maText.Text,
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maText.StartPosition,
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maText.StartPosition,
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maText.Length,
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false,
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0,
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aOffsets.get()))
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{
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aOutlineSequence.realloc(aOutlines.size());
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sal_Int32 nIndex (0);
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for (::basegfx::B2DPolyPolygonVector::const_iterator
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iOutline(aOutlines.begin()),
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iEnd(aOutlines.end());
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iOutline!=iEnd;
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++iOutline)
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{
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aOutlineSequence[nIndex++] = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
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mxDevice,
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*iOutline);
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}
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}
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return aOutlineSequence;
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}
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uno::Sequence< geometry::RealRectangle2D > SAL_CALL TextLayout::queryInkMeasures( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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OutputDevice& rOutDev = mpOutDevProvider->getOutDev();
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ScopedVclPtrInstance< VirtualDevice > pVDev( rOutDev );
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pVDev->SetFont( mpFont->getVCLFont() );
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setupLayoutMode( *pVDev.get(), mnTextDirection );
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const rendering::ViewState aViewState(
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geometry::AffineMatrix2D(1,0,0, 0,1,0),
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NULL);
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rendering::RenderState aRenderState (
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geometry::AffineMatrix2D(1,0,0,0,1,0),
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NULL,
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uno::Sequence<double>(4),
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rendering::CompositeOperation::SOURCE);
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::std::unique_ptr< long []> aOffsets(new long[maLogicalAdvancements.getLength()]);
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setupTextOffsets(aOffsets.get(), maLogicalAdvancements, aViewState, aRenderState);
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MetricVector aMetricVector;
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uno::Sequence<geometry::RealRectangle2D> aBoundingBoxes;
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if (pVDev->GetGlyphBoundRects(
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Point(0,0),
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maText.Text,
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::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition),
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::canvas::tools::numeric_cast<sal_uInt16>(maText.Length),
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::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition),
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aMetricVector))
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{
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aBoundingBoxes.realloc(aMetricVector.size());
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sal_Int32 nIndex (0);
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for (MetricVector::const_iterator
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iMetric(aMetricVector.begin()),
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iEnd(aMetricVector.end());
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iMetric!=iEnd;
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++iMetric)
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{
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aBoundingBoxes[nIndex++] = geometry::RealRectangle2D(
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iMetric->getX(),
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iMetric->getY(),
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iMetric->getX() + iMetric->getWidth(),
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iMetric->getY() + iMetric->getHeight());
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}
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}
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return aBoundingBoxes;
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}
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uno::Sequence< geometry::RealRectangle2D > SAL_CALL TextLayout::queryMeasures( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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// TODO(F1)
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return uno::Sequence< geometry::RealRectangle2D >();
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}
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uno::Sequence< double > SAL_CALL TextLayout::queryLogicalAdvancements( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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return maLogicalAdvancements;
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}
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void SAL_CALL TextLayout::applyLogicalAdvancements( const uno::Sequence< double >& aAdvancements ) throw (lang::IllegalArgumentException, uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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ENSURE_ARG_OR_THROW( aAdvancements.getLength() == maText.Length,
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"TextLayout::applyLogicalAdvancements(): mismatching number of advancements" );
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maLogicalAdvancements = aAdvancements;
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}
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geometry::RealRectangle2D SAL_CALL TextLayout::queryTextBounds( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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if( !mpOutDevProvider )
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return geometry::RealRectangle2D();
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OutputDevice& rOutDev = mpOutDevProvider->getOutDev();
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ScopedVclPtrInstance< VirtualDevice > pVDev( rOutDev );
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pVDev->SetFont( mpFont->getVCLFont() );
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// need metrics for Y offset, the XCanvas always renders
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// relative to baseline
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const ::FontMetric& aMetric( pVDev->GetFontMetric() );
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setupLayoutMode( *pVDev.get(), mnTextDirection );
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const sal_Int32 nAboveBaseline( /*-aMetric.GetIntLeading()*/ - aMetric.GetAscent() );
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const sal_Int32 nBelowBaseline( aMetric.GetDescent() );
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if( maLogicalAdvancements.getLength() )
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{
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return geometry::RealRectangle2D( 0, nAboveBaseline,
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maLogicalAdvancements[ maLogicalAdvancements.getLength()-1 ],
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nBelowBaseline );
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}
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else
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{
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return geometry::RealRectangle2D( 0, nAboveBaseline,
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pVDev->GetTextWidth(
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maText.Text,
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::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition),
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::canvas::tools::numeric_cast<sal_uInt16>(maText.Length) ),
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nBelowBaseline );
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}
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}
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double SAL_CALL TextLayout::justify( double nSize ) throw (lang::IllegalArgumentException, uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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(void)nSize;
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// TODO(F1)
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return 0.0;
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}
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double SAL_CALL TextLayout::combinedJustify( const uno::Sequence< uno::Reference< rendering::XTextLayout > >& aNextLayouts,
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double nSize ) throw (lang::IllegalArgumentException, uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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(void)aNextLayouts;
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(void)nSize;
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// TODO(F1)
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return 0.0;
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}
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rendering::TextHit SAL_CALL TextLayout::getTextHit( const geometry::RealPoint2D& aHitPoint ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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(void)aHitPoint;
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// TODO(F1)
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return rendering::TextHit();
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}
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rendering::Caret SAL_CALL TextLayout::getCaret( sal_Int32 nInsertionIndex, sal_Bool bExcludeLigatures ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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(void)nInsertionIndex;
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(void)bExcludeLigatures;
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// TODO(F1)
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return rendering::Caret();
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}
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sal_Int32 SAL_CALL TextLayout::getNextInsertionIndex( sal_Int32 nStartIndex, sal_Int32 nCaretAdvancement, sal_Bool bExcludeLigatures ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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(void)nStartIndex;
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(void)nCaretAdvancement;
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(void)bExcludeLigatures;
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// TODO(F1)
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return 0;
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}
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uno::Reference< rendering::XPolyPolygon2D > SAL_CALL TextLayout::queryVisualHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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(void)nStartIndex;
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(void)nEndIndex;
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// TODO(F1)
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return uno::Reference< rendering::XPolyPolygon2D >();
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}
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uno::Reference< rendering::XPolyPolygon2D > SAL_CALL TextLayout::queryLogicalHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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(void)nStartIndex;
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(void)nEndIndex;
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// TODO(F1)
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return uno::Reference< rendering::XPolyPolygon2D >();
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}
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double SAL_CALL TextLayout::getBaselineOffset( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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// TODO(F1)
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return 0.0;
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}
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sal_Int8 SAL_CALL TextLayout::getMainTextDirection( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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return mnTextDirection;
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}
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uno::Reference< rendering::XCanvasFont > SAL_CALL TextLayout::getFont( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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return mpFont.get();
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}
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rendering::StringContext SAL_CALL TextLayout::getText( ) throw (uno::RuntimeException, std::exception)
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{
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SolarMutexGuard aGuard;
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return maText;
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}
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bool TextLayout::draw( OutputDevice& rOutDev,
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const Point& rOutpos,
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const rendering::ViewState& viewState,
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const rendering::RenderState& renderState ) const
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{
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SolarMutexGuard aGuard;
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setupLayoutMode( rOutDev, mnTextDirection );
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if( maLogicalAdvancements.getLength() )
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{
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// TODO(P2): cache that
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::std::unique_ptr< long []> aOffsets(new long[maLogicalAdvancements.getLength()]);
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setupTextOffsets( aOffsets.get(), maLogicalAdvancements, viewState, renderState );
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// TODO(F3): ensure correct length and termination for DX
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// array (last entry _must_ contain the overall width)
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rOutDev.DrawTextArray( rOutpos,
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maText.Text,
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aOffsets.get(),
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::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition),
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::canvas::tools::numeric_cast<sal_uInt16>(maText.Length) );
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}
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else
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{
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rOutDev.DrawText( rOutpos,
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maText.Text,
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::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition),
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::canvas::tools::numeric_cast<sal_uInt16>(maText.Length) );
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}
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return true;
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}
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namespace
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{
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class OffsetTransformer
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{
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public:
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explicit OffsetTransformer( const ::basegfx::B2DHomMatrix& rMat ) :
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maMatrix( rMat )
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{
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}
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sal_Int32 operator()( const double& rOffset )
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{
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// This is an optimization of the normal rMat*[x,0]
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// transformation of the advancement vector (in x
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// direction), followed by a length calculation of the
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// resulting vector: advancement' =
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// ||rMat*[x,0]||. Since advancements are vectors, we
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// can ignore translational components, thus if [x,0],
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// it follows that rMat*[x,0]=[x',0] holds. Thus, we
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// just have to calc the transformation of the x
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// component.
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// TODO(F2): Handle non-horizontal advancements!
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return ::basegfx::fround( hypot(maMatrix.get(0,0)*rOffset,
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maMatrix.get(1,0)*rOffset) );
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}
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private:
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::basegfx::B2DHomMatrix maMatrix;
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};
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}
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void TextLayout::setupTextOffsets( long* outputOffsets,
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const uno::Sequence< double >& inputOffsets,
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const rendering::ViewState& viewState,
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const rendering::RenderState& renderState ) const
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{
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ENSURE_OR_THROW( outputOffsets!=NULL,
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"TextLayout::setupTextOffsets offsets NULL" );
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::basegfx::B2DHomMatrix aMatrix;
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::canvas::tools::mergeViewAndRenderTransform(aMatrix,
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viewState,
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renderState);
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// fill integer offsets
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::std::transform( inputOffsets.getConstArray(),
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inputOffsets.getConstArray()+inputOffsets.getLength(),
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outputOffsets,
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OffsetTransformer( aMatrix ) );
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}
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OUString SAL_CALL TextLayout::getImplementationName() throw( uno::RuntimeException, std::exception )
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{
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return OUString( "VCLCanvas::TextLayout" );
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}
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sal_Bool SAL_CALL TextLayout::supportsService( const OUString& ServiceName ) throw( uno::RuntimeException, std::exception )
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{
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return cppu::supportsService( this, ServiceName );
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}
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uno::Sequence< OUString > SAL_CALL TextLayout::getSupportedServiceNames() throw( uno::RuntimeException, std::exception )
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{
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uno::Sequence< OUString > aRet(1);
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aRet[0] = "com.sun.star.rendering.TextLayout";
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return aRet;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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