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Diffstat (limited to 'drawinglayer/source/primitive2d/textlayoutdevice.cxx')
| -rw-r--r-- | drawinglayer/source/primitive2d/textlayoutdevice.cxx | 496 |
1 files changed, 496 insertions, 0 deletions
diff --git a/drawinglayer/source/primitive2d/textlayoutdevice.cxx b/drawinglayer/source/primitive2d/textlayoutdevice.cxx new file mode 100644 index 000000000000..c3435333a3d3 --- /dev/null +++ b/drawinglayer/source/primitive2d/textlayoutdevice.cxx @@ -0,0 +1,496 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_drawinglayer.hxx" + +#include <drawinglayer/primitive2d/textlayoutdevice.hxx> +#include <vcl/timer.hxx> +#include <vcl/virdev.hxx> +#include <vcl/font.hxx> +#include <vcl/metric.hxx> +#include <i18npool/mslangid.hxx> +#include <drawinglayer/primitive2d/textprimitive2d.hxx> +#include <vcl/svapp.hxx> + +////////////////////////////////////////////////////////////////////////////// +// VDev RevDevice provider + +namespace +{ + class ImpTimedRefDev : public Timer + { + ImpTimedRefDev** mppStaticPointerOnMe; + VirtualDevice* mpVirDev; + sal_uInt32 mnUseCount; + + public: + ImpTimedRefDev(ImpTimedRefDev** ppStaticPointerOnMe); + ~ImpTimedRefDev(); + virtual void Timeout(); + + VirtualDevice& acquireVirtualDevice(); + void releaseVirtualDevice(); + }; + + ImpTimedRefDev::ImpTimedRefDev(ImpTimedRefDev** ppStaticPointerOnMe) + : mppStaticPointerOnMe(ppStaticPointerOnMe), + mpVirDev(0L), + mnUseCount(0L) + { + SetTimeout(3L * 60L * 1000L); // three minutes + Start(); + } + + ImpTimedRefDev::~ImpTimedRefDev() + { + OSL_ENSURE(0L == mnUseCount, "destruction of a still used ImpTimedRefDev (!)"); + + if(mppStaticPointerOnMe && *mppStaticPointerOnMe) + { + *mppStaticPointerOnMe = 0L; + } + + if(mpVirDev) + { + delete mpVirDev; + } + } + + void ImpTimedRefDev::Timeout() + { + // for obvious reasons, do not call anything after this + delete (this); + } + + VirtualDevice& ImpTimedRefDev::acquireVirtualDevice() + { + if(!mpVirDev) + { + mpVirDev = new VirtualDevice(); + mpVirDev->SetReferenceDevice( VirtualDevice::REFDEV_MODE_MSO1 ); + } + + if(!mnUseCount) + { + Stop(); + } + + mnUseCount++; + + return *mpVirDev; + } + + void ImpTimedRefDev::releaseVirtualDevice() + { + OSL_ENSURE(mnUseCount, "mismatch call number to releaseVirtualDevice() (!)"); + mnUseCount--; + + if(!mnUseCount) + { + Start(); + } + } +} // end of anonymous namespace + +////////////////////////////////////////////////////////////////////////////// +// access to one global ImpTimedRefDev incarnation in namespace drawinglayer::primitive + +namespace drawinglayer +{ + namespace primitive2d + { + // static pointer here + static ImpTimedRefDev* pImpGlobalRefDev = 0L; + + // static methods here + VirtualDevice& acquireGlobalVirtualDevice() + { + if(!pImpGlobalRefDev) + { + pImpGlobalRefDev = new ImpTimedRefDev(&pImpGlobalRefDev); + } + + return pImpGlobalRefDev->acquireVirtualDevice(); + } + + void releaseGlobalVirtualDevice() + { + OSL_ENSURE(pImpGlobalRefDev, "releaseGlobalVirtualDevice() without prior acquireGlobalVirtualDevice() call(!)"); + pImpGlobalRefDev->releaseVirtualDevice(); + } + + TextLayouterDevice::TextLayouterDevice() + : mrDevice(acquireGlobalVirtualDevice()) + { + } + + TextLayouterDevice::~TextLayouterDevice() + { + releaseGlobalVirtualDevice(); + } + + void TextLayouterDevice::setFont(const Font& rFont) + { + mrDevice.SetFont( rFont ); + } + + void TextLayouterDevice::setFontAttribute( + const attribute::FontAttribute& rFontAttribute, + double fFontScaleX, + double fFontScaleY, + const ::com::sun::star::lang::Locale& rLocale) + { + setFont(getVclFontFromFontAttribute( + rFontAttribute, + fFontScaleX, + fFontScaleY, + 0.0, + rLocale)); + } + + double TextLayouterDevice::getOverlineOffset() const + { + const ::FontMetric& rMetric = mrDevice.GetFontMetric(); + double fRet = (rMetric.GetIntLeading() / 2.0) - rMetric.GetAscent(); + return fRet; + } + + double TextLayouterDevice::getUnderlineOffset() const + { + const ::FontMetric& rMetric = mrDevice.GetFontMetric(); + double fRet = rMetric.GetDescent() / 2.0; + return fRet; + } + + double TextLayouterDevice::getStrikeoutOffset() const + { + const ::FontMetric& rMetric = mrDevice.GetFontMetric(); + double fRet = (rMetric.GetAscent() - rMetric.GetIntLeading()) / 3.0; + return fRet; + } + + double TextLayouterDevice::getOverlineHeight() const + { + const ::FontMetric& rMetric = mrDevice.GetFontMetric(); + double fRet = rMetric.GetIntLeading() / 2.5; + return fRet; + } + + double TextLayouterDevice::getUnderlineHeight() const + { + const ::FontMetric& rMetric = mrDevice.GetFontMetric(); + double fRet = rMetric.GetDescent() / 4.0; + return fRet; + } + + double TextLayouterDevice::getTextHeight() const + { + return mrDevice.GetTextHeight(); + } + + double TextLayouterDevice::getTextWidth( + const String& rText, + sal_uInt32 nIndex, + sal_uInt32 nLength) const + { + return mrDevice.GetTextWidth(rText, nIndex, nLength); + } + + bool TextLayouterDevice::getTextOutlines( + basegfx::B2DPolyPolygonVector& rB2DPolyPolyVector, + const String& rText, + sal_uInt32 nIndex, + sal_uInt32 nLength, + const ::std::vector< double >& rDXArray) const + { + const sal_uInt32 nDXArrayCount(rDXArray.size()); + sal_uInt32 nTextLength(nLength); + const sal_uInt32 nStringLength(rText.Len()); + + if(nTextLength + nIndex > nStringLength) + { + nTextLength = nStringLength - nIndex; + } + + if(nDXArrayCount) + { + OSL_ENSURE(nDXArrayCount == nTextLength, "DXArray size does not correspond to text portion size (!)"); + std::vector< sal_Int32 > aIntegerDXArray(nDXArrayCount); + + for(sal_uInt32 a(0); a < nDXArrayCount; a++) + { + aIntegerDXArray[a] = basegfx::fround(rDXArray[a]); + } + + return mrDevice.GetTextOutlines( + rB2DPolyPolyVector, + rText, + nIndex, + nIndex, + nLength, + true, + 0, + &(aIntegerDXArray[0])); + } + else + { + return mrDevice.GetTextOutlines( + rB2DPolyPolyVector, + rText, + nIndex, + nIndex, + nLength, + true, + 0, + 0); + } + } + + basegfx::B2DRange TextLayouterDevice::getTextBoundRect( + const String& rText, + sal_uInt32 nIndex, + sal_uInt32 nLength) const + { + sal_uInt32 nTextLength(nLength); + const sal_uInt32 nStringLength(rText.Len()); + + if(nTextLength + nIndex > nStringLength) + { + nTextLength = nStringLength - nIndex; + } + + if(nTextLength) + { + Rectangle aRect; + + mrDevice.GetTextBoundRect( + aRect, + rText, + nIndex, + nIndex, + nLength); + + // #i104432#, #i102556# take empty results into account + if(!aRect.IsEmpty()) + { + return basegfx::B2DRange( + aRect.Left(), aRect.Top(), + aRect.Right(), aRect.Bottom()); + } + } + + return basegfx::B2DRange(); + } + + double TextLayouterDevice::getFontAscent() const + { + const ::FontMetric& rMetric = mrDevice.GetFontMetric(); + return rMetric.GetAscent(); + } + + double TextLayouterDevice::getFontDescent() const + { + const ::FontMetric& rMetric = mrDevice.GetFontMetric(); + return rMetric.GetDescent(); + } + + void TextLayouterDevice::addTextRectActions( + const Rectangle& rRectangle, + const String& rText, + sal_uInt16 nStyle, + GDIMetaFile& rGDIMetaFile) const + { + mrDevice.AddTextRectActions( + rRectangle, rText, nStyle, rGDIMetaFile); + } + + ::std::vector< double > TextLayouterDevice::getTextArray( + const String& rText, + sal_uInt32 nIndex, + sal_uInt32 nLength) const + { + ::std::vector< double > aRetval; + sal_uInt32 nTextLength(nLength); + const sal_uInt32 nStringLength(rText.Len()); + + if(nTextLength + nIndex > nStringLength) + { + nTextLength = nStringLength - nIndex; + } + + if(nTextLength) + { + aRetval.reserve(nTextLength); + sal_Int32* pArray = new sal_Int32[nTextLength]; + mrDevice.GetTextArray(rText, pArray, nIndex, nLength); + + for(sal_uInt32 a(0); a < nTextLength; a++) + { + aRetval.push_back(pArray[a]); + } + } + + return aRetval; + } + + } // end of namespace primitive2d +} // end of namespace drawinglayer + +////////////////////////////////////////////////////////////////////////////// +// helper methods for vcl font handling + +namespace drawinglayer +{ + namespace primitive2d + { + Font getVclFontFromFontAttribute( + const attribute::FontAttribute& rFontAttribute, + double fFontScaleX, + double fFontScaleY, + double fFontRotation, + const ::com::sun::star::lang::Locale& rLocale) + { + // detect FontScaling + const sal_uInt32 nHeight(basegfx::fround(fabs(fFontScaleY))); + const sal_uInt32 nWidth(basegfx::fround(fabs(fFontScaleX))); + const bool bFontIsScaled(nHeight != nWidth); + +#ifdef WIN32 + // for WIN32 systems, start with creating an unscaled font. If FontScaling + // is wanted, that width needs to be adapted using FontMetric again to get a + // width of the unscaled font + Font aRetval( + rFontAttribute.getFamilyName(), + rFontAttribute.getStyleName(), + Size(0, nHeight)); +#else + // for non-WIN32 systems things are easier since these accept a Font creation + // with initially nWidth != nHeight for FontScaling. Despite that, use zero for + // FontWidth when no scaling is used to explicitely have that zero when e.g. the + // Font would be recorded in a MetaFile (The MetaFile FontAction WILL record a + // set FontWidth; import that in a WIN32 system, and trouble is there) + Font aRetval( + rFontAttribute.getFamilyName(), + rFontAttribute.getStyleName(), + Size(bFontIsScaled ? nWidth : 0, nHeight)); +#endif + // define various other FontAttribute + aRetval.SetAlign(ALIGN_BASELINE); + aRetval.SetCharSet(rFontAttribute.getSymbol() ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE); + aRetval.SetVertical(rFontAttribute.getVertical() ? TRUE : FALSE); + aRetval.SetWeight(static_cast<FontWeight>(rFontAttribute.getWeight())); + aRetval.SetItalic(rFontAttribute.getItalic() ? ITALIC_NORMAL : ITALIC_NONE); + aRetval.SetOutline(rFontAttribute.getOutline()); + aRetval.SetPitch(rFontAttribute.getMonospaced() ? PITCH_FIXED : PITCH_VARIABLE); + aRetval.SetLanguage(MsLangId::convertLocaleToLanguage(rLocale)); + +#ifdef WIN32 + // for WIN32 systems, correct the FontWidth if FontScaling is used + if(bFontIsScaled && nHeight > 0) + { + const FontMetric aUnscaledFontMetric(Application::GetDefaultDevice()->GetFontMetric(aRetval)); + + if(aUnscaledFontMetric.GetWidth() > 0) + { + const double fScaleFactor((double)nWidth / (double)nHeight); + const sal_uInt32 nScaledWidth(basegfx::fround((double)aUnscaledFontMetric.GetWidth() * fScaleFactor)); + aRetval.SetWidth(nScaledWidth); + } + } +#endif + // handle FontRotation (if defined) + if(!basegfx::fTools::equalZero(fFontRotation)) + { + sal_Int16 aRotate10th((sal_Int16)(fFontRotation * (-1800.0/F_PI))); + aRetval.SetOrientation(aRotate10th % 3600); + } + + return aRetval; + } + + attribute::FontAttribute getFontAttributeFromVclFont( + basegfx::B2DVector& o_rSize, + const Font& rFont, + bool bRTL, + bool bBiDiStrong) + { + const attribute::FontAttribute aRetval( + rFont.GetName(), + rFont.GetStyleName(), + static_cast<sal_uInt16>(rFont.GetWeight()), + RTL_TEXTENCODING_SYMBOL == rFont.GetCharSet(), + rFont.IsVertical(), + ITALIC_NONE != rFont.GetItalic(), + PITCH_FIXED == rFont.GetPitch(), + rFont.IsOutline(), + bRTL, + bBiDiStrong); + // TODO: eKerning + + // set FontHeight and init to no FontScaling + o_rSize.setY(rFont.GetSize().getHeight() > 0 ? rFont.GetSize().getHeight() : 0); + o_rSize.setX(o_rSize.getY()); + +#ifdef WIN32 + // for WIN32 systems, the FontScaling at the Font is detected by + // checking that FontWidth != 0. When FontScaling is used, WIN32 + // needs to do extra stuff to detect the correct width (since it's + // zero and not equal the font height) and it's relationship to + // the height + if(rFont.GetSize().getWidth() > 0) + { + Font aUnscaledFont(rFont); + aUnscaledFont.SetWidth(0); + const FontMetric aUnscaledFontMetric(Application::GetDefaultDevice()->GetFontMetric(aUnscaledFont)); + + if(aUnscaledFontMetric.GetWidth() > 0) + { + const double fScaleFactor((double)rFont.GetSize().getWidth() / (double)aUnscaledFontMetric.GetWidth()); + o_rSize.setX(fScaleFactor * o_rSize.getY()); + } + } +#else + // For non-WIN32 systems the detection is the same, but the value + // is easier achieved since width == height is interpreted as no + // scaling. Ergo, Width == 0 means width == height, and width != 0 + // means the scaling is in the direct relation of width to height + if(rFont.GetSize().getWidth() > 0) + { + o_rSize.setX((double)rFont.GetSize().getWidth()); + } +#endif + return aRetval; + } + } // end of namespace primitive2d +} // end of namespace drawinglayer + +////////////////////////////////////////////////////////////////////////////// +// eof + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |