| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| // MARKER(update_precomp.py): autogen include statement, do not remove |
| #include "precompiled_canvas.hxx" |
| |
| #include <canvas/debug.hxx> |
| #include <tools/diagnose_ex.h> |
| #include <canvas/canvastools.hxx> |
| |
| #include <com/sun/star/rendering/CompositeOperation.hpp> |
| #include <com/sun/star/rendering/TextDirection.hpp> |
| |
| #include <vcl/metric.hxx> |
| #include <vcl/virdev.hxx> |
| |
| #include <basegfx/matrix/b2dhommatrix.hxx> |
| #include <basegfx/numeric/ftools.hxx> |
| #include <basegfx/tools/canvastools.hxx> |
| |
| #include "impltools.hxx" |
| #include "textlayout.hxx" |
| |
| #include <boost/scoped_array.hpp> |
| |
| |
| using namespace ::com::sun::star; |
| |
| namespace vclcanvas |
| { |
| namespace |
| { |
| void setupLayoutMode( OutputDevice& rOutDev, |
| sal_Int8 nTextDirection ) |
| { |
| // TODO(P3): avoid if already correctly set |
| sal_uIntPtr nLayoutMode; |
| switch( nTextDirection ) |
| { |
| default: |
| nLayoutMode = 0; |
| break; |
| case rendering::TextDirection::WEAK_LEFT_TO_RIGHT: |
| nLayoutMode = TEXT_LAYOUT_BIDI_LTR; |
| break; |
| case rendering::TextDirection::STRONG_LEFT_TO_RIGHT: |
| nLayoutMode = TEXT_LAYOUT_BIDI_LTR | TEXT_LAYOUT_BIDI_STRONG; |
| break; |
| case rendering::TextDirection::WEAK_RIGHT_TO_LEFT: |
| nLayoutMode = TEXT_LAYOUT_BIDI_RTL; |
| break; |
| case rendering::TextDirection::STRONG_RIGHT_TO_LEFT: |
| nLayoutMode = TEXT_LAYOUT_BIDI_RTL | TEXT_LAYOUT_BIDI_STRONG; |
| break; |
| } |
| |
| // set calculated layout mode. Origin is always the left edge, |
| // as required at the API spec |
| rOutDev.SetLayoutMode( nLayoutMode | TEXT_LAYOUT_TEXTORIGIN_LEFT ); |
| } |
| } |
| |
| TextLayout::TextLayout( const rendering::StringContext& aText, |
| sal_Int8 nDirection, |
| sal_Int64 nRandomSeed, |
| const CanvasFont::Reference& rFont, |
| const uno::Reference<rendering::XGraphicDevice>& xDevice, |
| const OutDevProviderSharedPtr& rOutDev ) : |
| TextLayout_Base( m_aMutex ), |
| maText( aText ), |
| maLogicalAdvancements(), |
| mpFont( rFont ), |
| mxDevice( xDevice ), |
| mpOutDevProvider( rOutDev ), |
| mnTextDirection( nDirection ) |
| { |
| (void)nRandomSeed; |
| } |
| |
| void SAL_CALL TextLayout::disposing() |
| { |
| tools::LocalGuard aGuard; |
| |
| mpOutDevProvider.reset(); |
| mxDevice.clear(); |
| mpFont.reset(); |
| } |
| |
| // XTextLayout |
| uno::Sequence< uno::Reference< rendering::XPolyPolygon2D > > SAL_CALL TextLayout::queryTextShapes( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| OutputDevice& rOutDev = mpOutDevProvider->getOutDev(); |
| VirtualDevice aVDev( rOutDev ); |
| aVDev.SetFont( mpFont->getVCLFont() ); |
| |
| setupLayoutMode( aVDev, mnTextDirection ); |
| |
| const rendering::ViewState aViewState( |
| geometry::AffineMatrix2D(1,0,0, 0,1,0), |
| NULL); |
| |
| rendering::RenderState aRenderState ( |
| geometry::AffineMatrix2D(1,0,0,0,1,0), |
| NULL, |
| uno::Sequence<double>(4), |
| rendering::CompositeOperation::SOURCE); |
| |
| ::boost::scoped_array< sal_Int32 > aOffsets(new sal_Int32[maLogicalAdvancements.getLength()]); |
| setupTextOffsets(aOffsets.get(), maLogicalAdvancements, aViewState, aRenderState); |
| |
| uno::Sequence< uno::Reference< rendering::XPolyPolygon2D> > aOutlineSequence; |
| ::basegfx::B2DPolyPolygonVector aOutlines; |
| if (aVDev.GetTextOutlines( |
| aOutlines, |
| maText.Text, |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.Length), |
| sal_False, |
| 0, |
| aOffsets.get())) |
| { |
| aOutlineSequence.realloc(aOutlines.size()); |
| sal_Int32 nIndex (0); |
| for (::basegfx::B2DPolyPolygonVector::const_iterator |
| iOutline(aOutlines.begin()), |
| iEnd(aOutlines.end()); |
| iOutline!=iEnd; |
| ++iOutline) |
| { |
| aOutlineSequence[nIndex++] = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon( |
| mxDevice, |
| *iOutline); |
| } |
| } |
| |
| return aOutlineSequence; |
| } |
| |
| uno::Sequence< geometry::RealRectangle2D > SAL_CALL TextLayout::queryInkMeasures( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| |
| OutputDevice& rOutDev = mpOutDevProvider->getOutDev(); |
| VirtualDevice aVDev( rOutDev ); |
| aVDev.SetFont( mpFont->getVCLFont() ); |
| |
| setupLayoutMode( aVDev, mnTextDirection ); |
| |
| const rendering::ViewState aViewState( |
| geometry::AffineMatrix2D(1,0,0, 0,1,0), |
| NULL); |
| |
| rendering::RenderState aRenderState ( |
| geometry::AffineMatrix2D(1,0,0,0,1,0), |
| NULL, |
| uno::Sequence<double>(4), |
| rendering::CompositeOperation::SOURCE); |
| |
| ::boost::scoped_array< sal_Int32 > aOffsets(new sal_Int32[maLogicalAdvancements.getLength()]); |
| setupTextOffsets(aOffsets.get(), maLogicalAdvancements, aViewState, aRenderState); |
| |
| MetricVector aMetricVector; |
| uno::Sequence<geometry::RealRectangle2D> aBoundingBoxes; |
| if (aVDev.GetGlyphBoundRects( |
| Point(0,0), |
| maText.Text, |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.Length), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| aMetricVector)) |
| { |
| aBoundingBoxes.realloc(aMetricVector.size()); |
| sal_Int32 nIndex (0); |
| for (MetricVector::const_iterator |
| iMetric(aMetricVector.begin()), |
| iEnd(aMetricVector.end()); |
| iMetric!=iEnd; |
| ++iMetric) |
| { |
| aBoundingBoxes[nIndex++] = geometry::RealRectangle2D( |
| iMetric->getX(), |
| iMetric->getY(), |
| iMetric->getX() + iMetric->getWidth(), |
| iMetric->getY() + iMetric->getHeight()); |
| } |
| } |
| return aBoundingBoxes; |
| } |
| |
| uno::Sequence< geometry::RealRectangle2D > SAL_CALL TextLayout::queryMeasures( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| // TODO(F1) |
| return uno::Sequence< geometry::RealRectangle2D >(); |
| } |
| |
| uno::Sequence< double > SAL_CALL TextLayout::queryLogicalAdvancements( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| return maLogicalAdvancements; |
| } |
| |
| void SAL_CALL TextLayout::applyLogicalAdvancements( const uno::Sequence< double >& aAdvancements ) throw (lang::IllegalArgumentException, uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| ENSURE_ARG_OR_THROW( aAdvancements.getLength() == maText.Length, |
| "TextLayout::applyLogicalAdvancements(): mismatching number of advancements" ); |
| |
| maLogicalAdvancements = aAdvancements; |
| } |
| |
| geometry::RealRectangle2D SAL_CALL TextLayout::queryTextBounds( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| if( !mpOutDevProvider ) |
| return geometry::RealRectangle2D(); |
| |
| OutputDevice& rOutDev = mpOutDevProvider->getOutDev(); |
| |
| VirtualDevice aVDev( rOutDev ); |
| aVDev.SetFont( mpFont->getVCLFont() ); |
| |
| // need metrics for Y offset, the XCanvas always renders |
| // relative to baseline |
| const ::FontMetric& aMetric( aVDev.GetFontMetric() ); |
| |
| setupLayoutMode( aVDev, mnTextDirection ); |
| |
| const sal_Int32 nAboveBaseline( /*-aMetric.GetIntLeading()*/ - aMetric.GetAscent() ); |
| const sal_Int32 nBelowBaseline( aMetric.GetDescent() ); |
| |
| if( maLogicalAdvancements.getLength() ) |
| { |
| return geometry::RealRectangle2D( 0, nAboveBaseline, |
| maLogicalAdvancements[ maLogicalAdvancements.getLength()-1 ], |
| nBelowBaseline ); |
| } |
| else |
| { |
| return geometry::RealRectangle2D( 0, nAboveBaseline, |
| aVDev.GetTextWidth( |
| maText.Text, |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.Length) ), |
| nBelowBaseline ); |
| } |
| } |
| |
| double SAL_CALL TextLayout::justify( double nSize ) throw (lang::IllegalArgumentException, uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| (void)nSize; |
| |
| // TODO(F1) |
| return 0.0; |
| } |
| |
| double SAL_CALL TextLayout::combinedJustify( const uno::Sequence< uno::Reference< rendering::XTextLayout > >& aNextLayouts, |
| double nSize ) throw (lang::IllegalArgumentException, uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| (void)aNextLayouts; |
| (void)nSize; |
| |
| // TODO(F1) |
| return 0.0; |
| } |
| |
| rendering::TextHit SAL_CALL TextLayout::getTextHit( const geometry::RealPoint2D& aHitPoint ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| (void)aHitPoint; |
| |
| // TODO(F1) |
| return rendering::TextHit(); |
| } |
| |
| rendering::Caret SAL_CALL TextLayout::getCaret( sal_Int32 nInsertionIndex, sal_Bool bExcludeLigatures ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| (void)nInsertionIndex; |
| (void)bExcludeLigatures; |
| |
| // TODO(F1) |
| return rendering::Caret(); |
| } |
| |
| sal_Int32 SAL_CALL TextLayout::getNextInsertionIndex( sal_Int32 nStartIndex, sal_Int32 nCaretAdvancement, sal_Bool bExcludeLigatures ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| (void)nStartIndex; |
| (void)nCaretAdvancement; |
| (void)bExcludeLigatures; |
| |
| // TODO(F1) |
| return 0; |
| } |
| |
| uno::Reference< rendering::XPolyPolygon2D > SAL_CALL TextLayout::queryVisualHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| (void)nStartIndex; |
| (void)nEndIndex; |
| |
| // TODO(F1) |
| return uno::Reference< rendering::XPolyPolygon2D >(); |
| } |
| |
| uno::Reference< rendering::XPolyPolygon2D > SAL_CALL TextLayout::queryLogicalHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| (void)nStartIndex; |
| (void)nEndIndex; |
| |
| // TODO(F1) |
| return uno::Reference< rendering::XPolyPolygon2D >(); |
| } |
| |
| double SAL_CALL TextLayout::getBaselineOffset( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| // TODO(F1) |
| return 0.0; |
| } |
| |
| sal_Int8 SAL_CALL TextLayout::getMainTextDirection( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| return mnTextDirection; |
| } |
| |
| uno::Reference< rendering::XCanvasFont > SAL_CALL TextLayout::getFont( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| return mpFont.getRef(); |
| } |
| |
| rendering::StringContext SAL_CALL TextLayout::getText( ) throw (uno::RuntimeException) |
| { |
| tools::LocalGuard aGuard; |
| |
| return maText; |
| } |
| |
| bool TextLayout::draw( OutputDevice& rOutDev, |
| const Point& rOutpos, |
| const rendering::ViewState& viewState, |
| const rendering::RenderState& renderState ) const |
| { |
| tools::LocalGuard aGuard; |
| |
| setupLayoutMode( rOutDev, mnTextDirection ); |
| |
| if( maLogicalAdvancements.getLength() ) |
| { |
| // TODO(P2): cache that |
| ::boost::scoped_array< sal_Int32 > aOffsets(new sal_Int32[maLogicalAdvancements.getLength()]); |
| setupTextOffsets( aOffsets.get(), maLogicalAdvancements, viewState, renderState ); |
| |
| // TODO(F3): ensure correct length and termination for DX |
| // array (last entry _must_ contain the overall width) |
| |
| rOutDev.DrawTextArray( rOutpos, |
| maText.Text, |
| aOffsets.get(), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.Length) ); |
| } |
| else |
| { |
| rOutDev.DrawText( rOutpos, |
| maText.Text, |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.Length) ); |
| } |
| |
| return true; |
| } |
| |
| namespace |
| { |
| class OffsetTransformer |
| { |
| public: |
| OffsetTransformer( const ::basegfx::B2DHomMatrix& rMat ) : |
| maMatrix( rMat ) |
| { |
| } |
| |
| sal_Int32 operator()( const double& rOffset ) |
| { |
| // This is an optimization of the normal rMat*[x,0] |
| // transformation of the advancement vector (in x |
| // direction), followed by a length calculation of the |
| // resulting vector: advancement' = |
| // ||rMat*[x,0]||. Since advancements are vectors, we |
| // can ignore translational components, thus if [x,0], |
| // it follows that rMat*[x,0]=[x',0] holds. Thus, we |
| // just have to calc the transformation of the x |
| // component. |
| |
| // TODO(F2): Handle non-horizontal advancements! |
| return ::basegfx::fround( hypot(maMatrix.get(0,0)*rOffset, |
| maMatrix.get(1,0)*rOffset) ); |
| } |
| |
| private: |
| ::basegfx::B2DHomMatrix maMatrix; |
| }; |
| } |
| |
| void TextLayout::setupTextOffsets( sal_Int32* outputOffsets, |
| const uno::Sequence< double >& inputOffsets, |
| const rendering::ViewState& viewState, |
| const rendering::RenderState& renderState ) const |
| { |
| ENSURE_OR_THROW( outputOffsets!=NULL, |
| "TextLayout::setupTextOffsets offsets NULL" ); |
| |
| ::basegfx::B2DHomMatrix aMatrix; |
| |
| ::canvas::tools::mergeViewAndRenderTransform(aMatrix, |
| viewState, |
| renderState); |
| |
| // fill integer offsets |
| ::std::transform( const_cast< uno::Sequence< double >& >(inputOffsets).getConstArray(), |
| const_cast< uno::Sequence< double >& >(inputOffsets).getConstArray()+inputOffsets.getLength(), |
| outputOffsets, |
| OffsetTransformer( aMatrix ) ); |
| } |
| |
| |
| #define IMPLEMENTATION_NAME "VCLCanvas::TextLayout" |
| #define SERVICE_NAME "com.sun.star.rendering.TextLayout" |
| |
| ::rtl::OUString SAL_CALL TextLayout::getImplementationName() throw( uno::RuntimeException ) |
| { |
| return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( IMPLEMENTATION_NAME ) ); |
| } |
| |
| sal_Bool SAL_CALL TextLayout::supportsService( const ::rtl::OUString& ServiceName ) throw( uno::RuntimeException ) |
| { |
| return ServiceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM ( SERVICE_NAME ) ); |
| } |
| |
| uno::Sequence< ::rtl::OUString > SAL_CALL TextLayout::getSupportedServiceNames() throw( uno::RuntimeException ) |
| { |
| uno::Sequence< ::rtl::OUString > aRet(1); |
| aRet[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( SERVICE_NAME ) ); |
| |
| return aRet; |
| } |
| } |
