| /************************************************************** |
| * |
| * 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 <math.h> |
| |
| #include <canvas/debug.hxx> |
| #include <canvas/verbosetrace.hxx> |
| #include <tools/diagnose_ex.h> |
| |
| #include <vcl/metric.hxx> |
| #include <vcl/virdev.hxx> |
| |
| #ifdef WNT |
| #include <tools/prewin.h> |
| #include <windows.h> |
| #include <tools/postwin.h> |
| #ifdef max |
| #undef max |
| #endif |
| #ifdef min |
| #undef min |
| #endif |
| #endif |
| #include <vcl/sysdata.hxx> |
| |
| #include <basegfx/matrix/b2dhommatrix.hxx> |
| #include <basegfx/numeric/ftools.hxx> |
| |
| #include <boost/scoped_array.hpp> |
| |
| #include "cairo_textlayout.hxx" |
| #include "cairo_spritecanvas.hxx" |
| |
| #ifdef CAIRO_HAS_QUARTZ_SURFACE |
| # include "cairo_quartz_cairo.hxx" |
| #elif defined CAIRO_HAS_WIN32_SURFACE |
| # include "cairo_win32_cairo.hxx" |
| # include <cairo-win32.h> |
| #elif defined CAIRO_HAS_XLIB_SURFACE |
| # include "cairo_xlib_cairo.hxx" |
| # include <cairo-ft.h> |
| #else |
| # error Native API needed. |
| #endif |
| |
| using namespace ::cairo; |
| using namespace ::com::sun::star; |
| |
| namespace cairocanvas |
| { |
| namespace |
| { |
| void setupLayoutMode( OutputDevice& rOutDev, |
| sal_Int8 nTextDirection ) |
| { |
| // TODO(P3): avoid if already correctly set |
| sal_uLong 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 ); |
| } |
| |
| bool compareFallbacks(const SystemGlyphData&rA, const SystemGlyphData &rB) |
| { |
| return rA.fallbacklevel < rB.fallbacklevel; |
| } |
| } |
| |
| TextLayout::TextLayout( const rendering::StringContext& aText, |
| sal_Int8 nDirection, |
| sal_Int64 /*nRandomSeed*/, |
| const CanvasFont::Reference& rFont, |
| const SurfaceProviderRef& rRefDevice ) : |
| TextLayout_Base( m_aMutex ), |
| maText( aText ), |
| maLogicalAdvancements(), |
| mpFont( rFont ), |
| mpRefDevice( rRefDevice ), |
| mnTextDirection( nDirection ) |
| { |
| } |
| |
| TextLayout::~TextLayout() |
| { |
| } |
| |
| void SAL_CALL TextLayout::disposing() |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| mpFont.reset(); |
| mpRefDevice.clear(); |
| } |
| |
| // XTextLayout |
| uno::Sequence< uno::Reference< rendering::XPolyPolygon2D > > SAL_CALL TextLayout::queryTextShapes( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return uno::Sequence< uno::Reference< rendering::XPolyPolygon2D > >(); |
| } |
| |
| uno::Sequence< geometry::RealRectangle2D > SAL_CALL TextLayout::queryInkMeasures( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return uno::Sequence< geometry::RealRectangle2D >(); |
| } |
| |
| uno::Sequence< geometry::RealRectangle2D > SAL_CALL TextLayout::queryMeasures( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return uno::Sequence< geometry::RealRectangle2D >(); |
| } |
| |
| uno::Sequence< double > SAL_CALL TextLayout::queryLogicalAdvancements( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| return maLogicalAdvancements; |
| } |
| |
| void SAL_CALL TextLayout::applyLogicalAdvancements( const uno::Sequence< double >& aAdvancements ) throw (lang::IllegalArgumentException, uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| if( aAdvancements.getLength() != maText.Length ) |
| { |
| OSL_TRACE( "TextLayout::applyLogicalAdvancements(): mismatching number of advancements" ); |
| throw lang::IllegalArgumentException(); |
| } |
| |
| maLogicalAdvancements = aAdvancements; |
| } |
| |
| geometry::RealRectangle2D SAL_CALL TextLayout::queryTextBounds( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| OutputDevice* pOutDev = mpRefDevice->getOutputDevice(); |
| if( !pOutDev ) |
| return geometry::RealRectangle2D(); |
| |
| VirtualDevice aVDev( *pOutDev ); |
| 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) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return 0.0; |
| } |
| |
| double SAL_CALL TextLayout::combinedJustify( const uno::Sequence< uno::Reference< rendering::XTextLayout > >& /*aNextLayouts*/, |
| double /*nSize*/ ) throw (lang::IllegalArgumentException, uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return 0.0; |
| } |
| |
| rendering::TextHit SAL_CALL TextLayout::getTextHit( const geometry::RealPoint2D& /*aHitPoint*/ ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return rendering::TextHit(); |
| } |
| |
| rendering::Caret SAL_CALL TextLayout::getCaret( sal_Int32 /*nInsertionIndex*/, |
| sal_Bool /*bExcludeLigatures*/ ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return rendering::Caret(); |
| } |
| |
| sal_Int32 SAL_CALL TextLayout::getNextInsertionIndex( sal_Int32 /*nStartIndex*/, |
| sal_Int32 /*nCaretAdvancement*/, |
| sal_Bool /*bExcludeLigatures*/ ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return 0; |
| } |
| |
| uno::Reference< rendering::XPolyPolygon2D > SAL_CALL TextLayout::queryVisualHighlighting( sal_Int32 /*nStartIndex*/, |
| sal_Int32 /*nEndIndex*/ ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return uno::Reference< rendering::XPolyPolygon2D >(); |
| } |
| |
| uno::Reference< rendering::XPolyPolygon2D > SAL_CALL TextLayout::queryLogicalHighlighting( sal_Int32 /*nStartIndex*/, |
| sal_Int32 /*nEndIndex*/ ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return uno::Reference< rendering::XPolyPolygon2D >(); |
| } |
| |
| double SAL_CALL TextLayout::getBaselineOffset( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| // TODO |
| return 0.0; |
| } |
| |
| sal_Int8 SAL_CALL TextLayout::getMainTextDirection( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| return mnTextDirection; |
| } |
| |
| uno::Reference< rendering::XCanvasFont > SAL_CALL TextLayout::getFont( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| return mpFont.getRef(); |
| } |
| |
| rendering::StringContext SAL_CALL TextLayout::getText( ) throw (uno::RuntimeException) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| return maText; |
| } |
| |
| void TextLayout::useFont( Cairo* pCairo ) |
| { |
| rendering::FontRequest aFontRequest = mpFont->getFontRequest(); |
| rendering::FontInfo aFontInfo = aFontRequest.FontDescription; |
| |
| cairo_select_font_face( pCairo, ::rtl::OUStringToOString( aFontInfo.FamilyName, RTL_TEXTENCODING_UTF8 ), CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL ); |
| cairo_set_font_size( pCairo, aFontRequest.CellSize ); |
| } |
| |
| /** TextLayout:draw |
| * |
| * This function uses the "toy" api of the cairo library |
| * |
| **/ |
| bool TextLayout::draw( Cairo* pCairo ) |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| |
| ::rtl::OUString aSubText = maText.Text.copy( maText.StartPosition, maText.Length ); |
| ::rtl::OString aUTF8String = ::rtl::OUStringToOString( aSubText, RTL_TEXTENCODING_UTF8 ); |
| |
| cairo_save( pCairo ); |
| /* move to 0, 0 as cairo_show_text advances current point and current point is not restored by cairo_restore. |
| before we were depending on unmodified current point which I believed was preserved by save/restore */ |
| cairo_move_to( pCairo, 0, 0 ); |
| useFont( pCairo ); |
| cairo_show_text( pCairo, aUTF8String.getStr() ); |
| cairo_restore( pCairo ); |
| |
| return true; |
| } |
| |
| |
| /** |
| * TextLayout::isCairoRenderable |
| * |
| * Features currenly not supported by Cairo (VCL rendering is used as fallback): |
| * - vertical glyphs |
| * |
| * @return true, if text/font can be rendered with cairo |
| **/ |
| bool TextLayout::isCairoRenderable(SystemFontData aSysFontData) const |
| { |
| #if defined UNX && !defined QUARTZ |
| // is font usable? |
| if (!aSysFontData.nFontId) return false; |
| #endif |
| |
| // vertical glyph rendering is not supported in cairo for now |
| if (aSysFontData.bVerticalCharacterType) { |
| OSL_TRACE(":cairocanvas::TextLayout::isCairoRenderable(): ***************** VERTICAL CHARACTER STYLE!!! ****************"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** |
| * TextLayout::draw |
| * |
| * Cairo-based text rendering. Draw text directly on the cairo surface with cairo fonts. |
| * Avoid using VCL VirtualDevices for that, bypassing VCL DrawText functions, when possible |
| * |
| * Note: some text effects are not rendered due to lacking generic canvas or cairo canvas |
| * implementation. See issues 92657, 92658, 92659, 92660, 97529 |
| * |
| * @return true, if successful |
| **/ |
| bool TextLayout::draw( SurfaceSharedPtr& pSurface, |
| OutputDevice& rOutDev, |
| const Point& rOutpos, |
| const rendering::ViewState& viewState, |
| const rendering::RenderState& renderState ) const |
| { |
| ::osl::MutexGuard aGuard( m_aMutex ); |
| SystemTextLayoutData aSysLayoutData; |
| #if (defined CAIRO_HAS_WIN32_SURFACE) && (OSL_DEBUG_LEVEL > 1) |
| LOGFONTW logfont; |
| #endif |
| setupLayoutMode( rOutDev, mnTextDirection ); |
| |
| // TODO(P2): cache that |
| ::boost::scoped_array< sal_Int32 > aOffsets(new sal_Int32[maLogicalAdvancements.getLength()]); |
| |
| if( 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) |
| } |
| |
| aSysLayoutData = rOutDev.GetSysTextLayoutData(rOutpos, maText.Text, |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.Length), |
| maLogicalAdvancements.getLength() ? aOffsets.get() : NULL); |
| |
| // Sort them so that all glyphs on the same glyph fallback level are consecutive |
| std::sort(aSysLayoutData.rGlyphData.begin(), aSysLayoutData.rGlyphData.end(), compareFallbacks); |
| bool bCairoRenderable = true; |
| |
| //Pull all the fonts we need to render the text |
| typedef std::pair<SystemFontData,int> FontLevel; |
| typedef std::vector<FontLevel> FontLevelVector; |
| FontLevelVector aFontData; |
| SystemGlyphDataVector::const_iterator aIter=aSysLayoutData.rGlyphData.begin(); |
| const SystemGlyphDataVector::const_iterator aEnd=aSysLayoutData.rGlyphData.end(); |
| for( ; aIter != aEnd; ++aIter ) |
| { |
| if( aFontData.empty() || aIter->fallbacklevel != aFontData.back().second ) |
| { |
| aFontData.push_back(FontLevel(rOutDev.GetSysFontData(aIter->fallbacklevel), |
| aIter->fallbacklevel)); |
| if( !isCairoRenderable(aFontData.back().first) ) |
| { |
| bCairoRenderable = false; |
| OSL_TRACE(":cairocanvas::TextLayout::draw(S,O,p,v,r): VCL FALLBACK %s%s%s%s - %s", |
| maLogicalAdvancements.getLength() ? "ADV " : "", |
| aFontData.back().first.bAntialias ? "AA " : "", |
| aFontData.back().first.bFakeBold ? "FB " : "", |
| aFontData.back().first.bFakeItalic ? "FI " : "", |
| ::rtl::OUStringToOString( maText.Text.copy( maText.StartPosition, maText.Length ), |
| RTL_TEXTENCODING_UTF8 ).getStr()); |
| break; |
| } |
| } |
| } |
| |
| // The ::GetSysTextLayoutData(), i.e. layouting of text to glyphs can change the font being used. |
| // The fallback checks need to be done after final font is known. |
| if (!bCairoRenderable) // VCL FALLBACKS |
| { |
| if (maLogicalAdvancements.getLength()) // VCL FALLBACK - with glyph advances |
| { |
| rOutDev.DrawTextArray( rOutpos, maText.Text, aOffsets.get(), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.Length) ); |
| return true; |
| } |
| else // VCL FALLBACK - without advances |
| { |
| rOutDev.DrawText( rOutpos, maText.Text, |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.StartPosition), |
| ::canvas::tools::numeric_cast<sal_uInt16>(maText.Length) ); |
| return true; |
| } |
| } |
| |
| if (aSysLayoutData.rGlyphData.empty()) return false; //??? false? |
| |
| /** |
| * Setup platform independent glyph vector into cairo-based glyphs vector. |
| **/ |
| |
| // Loop through the fonts used and render the matching glyphs for each |
| FontLevelVector::const_iterator aFontDataIter = aFontData.begin(); |
| const FontLevelVector::const_iterator aFontDataEnd = aFontData.end(); |
| for( ; aFontDataIter != aFontDataEnd; ++aFontDataIter ) |
| { |
| const SystemFontData &rSysFontData = aFontDataIter->first; |
| |
| // setup glyphs |
| std::vector<cairo_glyph_t> cairo_glyphs; |
| cairo_glyphs.reserve( 256 ); |
| |
| SystemGlyphDataVector::const_iterator aIter=aSysLayoutData.rGlyphData.begin(); |
| const SystemGlyphDataVector::const_iterator aEnd=aSysLayoutData.rGlyphData.end(); |
| for( ; aIter != aEnd; ++aIter ) |
| { |
| SystemGlyphData systemGlyph = *aIter; |
| if( systemGlyph.fallbacklevel != aFontDataIter->second ) |
| continue; |
| |
| cairo_glyph_t aGlyph; |
| aGlyph.index = systemGlyph.index; |
| #ifdef CAIRO_HAS_WIN32_SURFACE |
| // Cairo requires standard glyph indexes (ETO_GLYPH_INDEX), while vcl/win/* uses ucs4 chars. |
| // Convert to standard indexes |
| aGlyph.index = cairo::ucs4toindex((unsigned int) aGlyph.index, rSysFontData.hFont); |
| #endif |
| aGlyph.x = systemGlyph.x; |
| aGlyph.y = systemGlyph.y; |
| cairo_glyphs.push_back(aGlyph); |
| } |
| |
| if (cairo_glyphs.empty()) |
| continue; |
| |
| /** |
| * Setup font |
| **/ |
| cairo_font_face_t* font_face = NULL; |
| |
| #ifdef CAIRO_HAS_QUARTZ_SURFACE |
| // TODO: use cairo_quartz_font_face_create_for_cgfont(cgFont) |
| // when CGFont (Mac OS X 10.5 API) is provided by the AQUA VCL backend. |
| font_face = cairo_quartz_font_face_create_for_atsu_font_id((ATSUFontID) rSysFontData.aATSUFontID); |
| |
| #elif defined CAIRO_HAS_WIN32_SURFACE |
| #if (OSL_DEBUG_LEVEL > 1) |
| GetObjectW( rSysFontData.hFont, sizeof(logfont), &logfont ); |
| #endif |
| // Note: cairo library uses logfont fallbacks when lfEscapement, lfOrientation and lfWidth are not zero. |
| // VCL always has non-zero value for lfWidth |
| font_face = cairo_win32_font_face_create_for_hfont(rSysFontData.hFont); |
| |
| #elif defined CAIRO_HAS_XLIB_SURFACE |
| font_face = cairo_ft_font_face_create_for_ft_face((FT_Face)rSysFontData.nFontId, |
| rSysFontData.nFontFlags); |
| #else |
| # error Native API needed. |
| #endif |
| |
| CairoSharedPtr pSCairo = pSurface->getCairo(); |
| |
| cairo_set_font_face( pSCairo.get(), font_face); |
| |
| // create default font options. cairo_get_font_options() does not retrieve the surface defaults, |
| // only what has been set before with cairo_set_font_options() |
| cairo_font_options_t* options = cairo_font_options_create(); |
| if (rSysFontData.bAntialias) { |
| // CAIRO_ANTIALIAS_GRAY provides more similar result to VCL Canvas, |
| // so we're not using CAIRO_ANTIALIAS_SUBPIXEL |
| cairo_font_options_set_antialias(options, CAIRO_ANTIALIAS_GRAY); |
| } |
| cairo_set_font_options( pSCairo.get(), options); |
| |
| // Font color |
| Color mTextColor = rOutDev.GetTextColor(); |
| cairo_set_source_rgb(pSCairo.get(), |
| mTextColor.GetRed()/255.0, |
| mTextColor.GetGreen()/255.0, |
| mTextColor.GetBlue()/255.0); |
| |
| // Font rotation and scaling |
| cairo_matrix_t m; |
| Font aFont = rOutDev.GetFont(); |
| FontMetric aMetric( rOutDev.GetFontMetric(aFont) ); |
| long nWidth = 0; |
| |
| // width calculation is deep magic and platform/font dependant. |
| // width == 0 means no scaling, and usually width == height means the same. |
| // Other values mean horizontal scaling (narrow or stretching) |
| // see issue #101566 |
| |
| //proper scale calculation across platforms |
| if (aFont.GetWidth() == 0) { |
| nWidth = aFont.GetHeight(); |
| } else { |
| // any scaling needs to be relative to the platform-dependent definition |
| // of height of the font |
| nWidth = aFont.GetWidth() * aFont.GetHeight() / aMetric.GetHeight(); |
| } |
| |
| cairo_matrix_init_identity(&m); |
| |
| if (aSysLayoutData.orientation) cairo_matrix_rotate(&m, (3600 - aSysLayoutData.orientation) * M_PI / 1800.0); |
| |
| cairo_matrix_scale(&m, nWidth, aFont.GetHeight()); |
| |
| //faux italics |
| if (rSysFontData.bFakeItalic) m.xy = -m.xx * 0x6000L / 0x10000L; |
| |
| cairo_set_font_matrix(pSCairo.get(), &m); |
| |
| OSL_TRACE("\r\n:cairocanvas::TextLayout::draw(S,O,p,v,r): Size:(%d,%d), W:%d->%d, Pos (%d,%d), G(%d,%d,%d) %s%s%s%s || Name:%s - %s", |
| aFont.GetWidth(), |
| aFont.GetHeight(), |
| aMetric.GetWidth(), |
| nWidth, |
| (int) rOutpos.X(), |
| (int) rOutpos.Y(), |
| cairo_glyphs[0].index, cairo_glyphs[1].index, cairo_glyphs[2].index, |
| maLogicalAdvancements.getLength() ? "ADV " : "", |
| rSysFontData.bAntialias ? "AA " : "", |
| rSysFontData.bFakeBold ? "FB " : "", |
| rSysFontData.bFakeItalic ? "FI " : "", |
| #if (defined CAIRO_HAS_WIN32_SURFACE) && (OSL_DEBUG_LEVEL > 1) |
| ::rtl::OUStringToOString( reinterpret_cast<const sal_Unicode*> (logfont.lfFaceName), RTL_TEXTENCODING_UTF8 ).getStr(), |
| #else |
| ::rtl::OUStringToOString( aFont.GetName(), RTL_TEXTENCODING_UTF8 ).getStr(), |
| #endif |
| ::rtl::OUStringToOString( maText.Text.copy( maText.StartPosition, maText.Length ), |
| RTL_TEXTENCODING_UTF8 ).getStr() |
| ); |
| |
| cairo_show_glyphs(pSCairo.get(), &cairo_glyphs[0], cairo_glyphs.size()); |
| |
| //faux bold |
| if (rSysFontData.bFakeBold) { |
| double bold_dx = 0.5 * sqrt( 0.7 * aFont.GetHeight() ); |
| int total_steps = 2 * ((int) (bold_dx + 0.5)); |
| |
| // loop to draw the text for every half pixel of displacement |
| for (int nSteps = 0; nSteps < total_steps; nSteps++) { |
| for(int nGlyphIdx = 0; nGlyphIdx < (int) cairo_glyphs.size(); nGlyphIdx++) { |
| cairo_glyphs[nGlyphIdx].x += bold_dx * nSteps / total_steps; |
| } |
| cairo_show_glyphs(pSCairo.get(), &cairo_glyphs[0], cairo_glyphs.size()); |
| } |
| OSL_TRACE(":cairocanvas::TextLayout::draw(S,O,p,v,r): FAKEBOLD - dx:%d", (int) bold_dx); |
| } |
| |
| cairo_restore( pSCairo.get() ); |
| cairo_font_face_destroy(font_face); |
| } |
| 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 SERVICE_NAME "com.sun.star.rendering.TextLayout" |
| #define IMPLEMENTATION_NAME "CairoCanvas::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; |
| } |
| } |
