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Diffstat (limited to '')
| -rw-r--r-- | canvas/source/cairo/cairo_canvasfont.cxx | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/canvas/source/cairo/cairo_canvasfont.cxx b/canvas/source/cairo/cairo_canvasfont.cxx new file mode 100644 index 0000000000..2445f40885 --- /dev/null +++ b/canvas/source/cairo/cairo_canvasfont.cxx @@ -0,0 +1,161 @@ +/* -*- 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/numeric/ftools.hxx> +#include <com/sun/star/rendering/PanoseProportion.hpp> +#include <cppuhelper/supportsservice.hxx> +#include <i18nlangtag/languagetag.hxx> +#include <rtl/math.hxx> +#include <utility> +#include <vcl/metric.hxx> + +#include <canvas/canvastools.hxx> + +#include "cairo_canvasfont.hxx" +#include "cairo_textlayout.hxx" + +using namespace ::com::sun::star; + +namespace cairocanvas +{ + + CanvasFont::CanvasFont( const rendering::FontRequest& rFontRequest, + const uno::Sequence< beans::PropertyValue >& rExtraFontProperties, + const geometry::Matrix2D& rFontMatrix, + SurfaceProviderRef rDevice ) : + maFont( vcl::Font( rFontRequest.FontDescription.FamilyName, + rFontRequest.FontDescription.StyleName, + Size( 0, ::basegfx::fround(rFontRequest.CellSize) ) ) ), + maFontRequest( rFontRequest ), + mpRefDevice(std::move( rDevice )), + mnEmphasisMark(0) + { + ::canvas::tools::extractExtraFontProperties(rExtraFontProperties, mnEmphasisMark); + + maFont->SetAlignment( ALIGN_BASELINE ); + maFont->SetCharSet( (rFontRequest.FontDescription.IsSymbolFont==css::util::TriState_YES) ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE ); + maFont->SetVertical( rFontRequest.FontDescription.IsVertical==css::util::TriState_YES ); + + // TODO(F2): improve panose->vclenum conversion + maFont->SetWeight( static_cast<FontWeight>(rFontRequest.FontDescription.FontDescription.Weight) ); + maFont->SetItalic( (rFontRequest.FontDescription.FontDescription.Letterform<=8) ? ITALIC_NONE : ITALIC_NORMAL ); + maFont->SetPitch( + rFontRequest.FontDescription.FontDescription.Proportion == rendering::PanoseProportion::MONO_SPACED + ? PITCH_FIXED : PITCH_VARIABLE); + + maFont->SetLanguage( LanguageTag::convertToLanguageType( rFontRequest.Locale, false)); + + // adjust to stretched/shrunk font + if( ::rtl::math::approxEqual( rFontMatrix.m00, rFontMatrix.m11) ) + return; + + VclPtr<OutputDevice> pOutDev( mpRefDevice->getOutputDevice() ); + + if( !pOutDev ) + return; + + const bool bOldMapState( pOutDev->IsMapModeEnabled() ); + pOutDev->EnableMapMode(false); + + const Size aSize = pOutDev->GetFontMetric( *maFont ).GetFontSize(); + + const double fDividend( rFontMatrix.m10 + rFontMatrix.m11 ); + double fStretch = rFontMatrix.m00 + rFontMatrix.m01; + + if( !::basegfx::fTools::equalZero( fDividend) ) + fStretch /= fDividend; + + const tools::Long nNewWidth = ::basegfx::fround( aSize.Width() * fStretch ); + + maFont->SetAverageFontWidth( nNewWidth ); + + pOutDev->EnableMapMode(bOldMapState); + } + + void CanvasFont::disposing(std::unique_lock<std::mutex>& rGuard) + { + rGuard.unlock(); + { + SolarMutexGuard aGuard; + mpRefDevice.clear(); + } + rGuard.lock(); + } + + uno::Reference< rendering::XTextLayout > SAL_CALL CanvasFont::createTextLayout( const rendering::StringContext& aText, sal_Int8 nDirection, sal_Int64 nRandomSeed ) + { + SolarMutexGuard aGuard; + + if( !mpRefDevice.is() ) + return uno::Reference< rendering::XTextLayout >(); // we're disposed + + return new TextLayout( aText, + nDirection, + nRandomSeed, + Reference( this ), + mpRefDevice ); + } + + rendering::FontRequest SAL_CALL CanvasFont::getFontRequest( ) + { + return maFontRequest; + } + + rendering::FontMetrics SAL_CALL CanvasFont::getFontMetrics( ) + { + // TODO(F1) + return rendering::FontMetrics(); + } + + uno::Sequence< double > SAL_CALL CanvasFont::getAvailableSizes( ) + { + // TODO(F1) + return uno::Sequence< double >(); + } + + uno::Sequence< beans::PropertyValue > SAL_CALL CanvasFont::getExtraFontProperties( ) + { + // TODO(F1) + return uno::Sequence< beans::PropertyValue >(); + } + + OUString SAL_CALL CanvasFont::getImplementationName() + { + return "CairoCanvas::CanvasFont"; + } + + sal_Bool SAL_CALL CanvasFont::supportsService( const OUString& ServiceName ) + { + return cppu::supportsService( this, ServiceName ); + } + + uno::Sequence< OUString > SAL_CALL CanvasFont::getSupportedServiceNames() + { + return { "com.sun.star.rendering.CanvasFont" }; + } + + vcl::Font const & CanvasFont::getVCLFont() const + { + return *maFont; + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |