500 lines
17 KiB
C++
500 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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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include <drawinglayer/primitive2d/textlayoutdevice.hxx>
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#include <comphelper/processfactory.hxx>
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#include <comphelper/scoped_disposing_ptr.hxx>
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#include <vcl/timer.hxx>
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#include <vcl/virdev.hxx>
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#include <vcl/font.hxx>
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#include <vcl/metric.hxx>
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#include <i18npool/mslangid.hxx>
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#include <drawinglayer/primitive2d/textprimitive2d.hxx>
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#include <vcl/svapp.hxx>
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//////////////////////////////////////////////////////////////////////////////
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// VDev RevDevice provider
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namespace
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{
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class ImpTimedRefDev;
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//the scoped_timed_RefDev owns a ImpTimeRefDev and releases it on dtor
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//or disposing of the default XComponentContext which causes the underlying
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//OutputDevice to get released
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//
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//The ImpTimerRefDev itself, if the timeout ever gets hit, will call
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//reset on the scoped_timed_RefDev to release the ImpTimerRefDev early
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//if its unused for a few minutes
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class scoped_timed_RefDev : public comphelper::scoped_disposing_ptr<ImpTimedRefDev>
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{
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public:
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scoped_timed_RefDev() : comphelper::scoped_disposing_ptr<ImpTimedRefDev>((::com::sun::star::uno::Reference<com::sun::star::lang::XComponent>(::comphelper::getProcessComponentContext(), ::com::sun::star::uno::UNO_QUERY_THROW)))
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{
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}
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};
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class the_scoped_timed_RefDev : public rtl::Static<scoped_timed_RefDev, the_scoped_timed_RefDev> {};
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class ImpTimedRefDev : public Timer
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{
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scoped_timed_RefDev& mrOwnerOfMe;
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VirtualDevice* mpVirDev;
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sal_uInt32 mnUseCount;
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public:
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explicit ImpTimedRefDev(scoped_timed_RefDev& rOwnerofMe);
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~ImpTimedRefDev();
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virtual void Timeout();
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VirtualDevice& acquireVirtualDevice();
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void releaseVirtualDevice();
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};
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ImpTimedRefDev::ImpTimedRefDev(scoped_timed_RefDev& rOwnerOfMe)
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: mrOwnerOfMe(rOwnerOfMe),
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mpVirDev(0L),
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mnUseCount(0L)
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{
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SetTimeout(3L * 60L * 1000L); // three minutes
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Start();
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}
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ImpTimedRefDev::~ImpTimedRefDev()
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{
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OSL_ENSURE(0L == mnUseCount, "destruction of a still used ImpTimedRefDev (!)");
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delete mpVirDev;
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}
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void ImpTimedRefDev::Timeout()
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{
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// for obvious reasons, do not call anything after this
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mrOwnerOfMe.reset();
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}
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VirtualDevice& ImpTimedRefDev::acquireVirtualDevice()
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{
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if(!mpVirDev)
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{
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mpVirDev = new VirtualDevice();
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mpVirDev->SetReferenceDevice( VirtualDevice::REFDEV_MODE_MSO1 );
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}
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if(!mnUseCount)
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{
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Stop();
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}
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mnUseCount++;
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return *mpVirDev;
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}
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void ImpTimedRefDev::releaseVirtualDevice()
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{
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OSL_ENSURE(mnUseCount, "mismatch call number to releaseVirtualDevice() (!)");
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mnUseCount--;
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if(!mnUseCount)
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{
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Start();
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}
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}
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} // end of anonymous namespace
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//////////////////////////////////////////////////////////////////////////////
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// access to one global ImpTimedRefDev incarnation in namespace drawinglayer::primitive
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namespace drawinglayer
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{
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namespace primitive2d
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{
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// static methods here
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VirtualDevice& acquireGlobalVirtualDevice()
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{
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scoped_timed_RefDev& rStdRefDevice = the_scoped_timed_RefDev::get();
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if(!rStdRefDevice)
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rStdRefDevice.reset(new ImpTimedRefDev(rStdRefDevice));
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return rStdRefDevice->acquireVirtualDevice();
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}
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void releaseGlobalVirtualDevice()
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{
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scoped_timed_RefDev& rStdRefDevice = the_scoped_timed_RefDev::get();
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OSL_ENSURE(rStdRefDevice, "releaseGlobalVirtualDevice() without prior acquireGlobalVirtualDevice() call(!)");
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rStdRefDevice->releaseVirtualDevice();
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}
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TextLayouterDevice::TextLayouterDevice()
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: mrDevice(acquireGlobalVirtualDevice())
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{
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}
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TextLayouterDevice::~TextLayouterDevice()
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{
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releaseGlobalVirtualDevice();
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}
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void TextLayouterDevice::setFont(const Font& rFont)
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{
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mrDevice.SetFont( rFont );
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}
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void TextLayouterDevice::setFontAttribute(
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const attribute::FontAttribute& rFontAttribute,
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double fFontScaleX,
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double fFontScaleY,
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const ::com::sun::star::lang::Locale& rLocale)
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{
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setFont(getVclFontFromFontAttribute(
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rFontAttribute,
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fFontScaleX,
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fFontScaleY,
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0.0,
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rLocale));
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}
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double TextLayouterDevice::getOverlineOffset() const
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{
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const ::FontMetric& rMetric = mrDevice.GetFontMetric();
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double fRet = (rMetric.GetIntLeading() / 2.0) - rMetric.GetAscent();
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return fRet;
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}
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double TextLayouterDevice::getUnderlineOffset() const
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{
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const ::FontMetric& rMetric = mrDevice.GetFontMetric();
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double fRet = rMetric.GetDescent() / 2.0;
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return fRet;
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}
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double TextLayouterDevice::getStrikeoutOffset() const
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{
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const ::FontMetric& rMetric = mrDevice.GetFontMetric();
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double fRet = (rMetric.GetAscent() - rMetric.GetIntLeading()) / 3.0;
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return fRet;
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}
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double TextLayouterDevice::getOverlineHeight() const
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{
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const ::FontMetric& rMetric = mrDevice.GetFontMetric();
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double fRet = rMetric.GetIntLeading() / 2.5;
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return fRet;
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}
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double TextLayouterDevice::getUnderlineHeight() const
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{
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const ::FontMetric& rMetric = mrDevice.GetFontMetric();
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double fRet = rMetric.GetDescent() / 4.0;
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return fRet;
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}
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double TextLayouterDevice::getTextHeight() const
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{
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return mrDevice.GetTextHeight();
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}
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double TextLayouterDevice::getTextWidth(
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const String& rText,
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sal_uInt32 nIndex,
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sal_uInt32 nLength) const
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{
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return mrDevice.GetTextWidth(rText, nIndex, nLength);
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}
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bool TextLayouterDevice::getTextOutlines(
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basegfx::B2DPolyPolygonVector& rB2DPolyPolyVector,
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const String& rText,
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sal_uInt32 nIndex,
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sal_uInt32 nLength,
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const ::std::vector< double >& rDXArray) const
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{
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const sal_uInt32 nDXArrayCount(rDXArray.size());
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sal_uInt32 nTextLength(nLength);
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const sal_uInt32 nStringLength(rText.Len());
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if(nTextLength + nIndex > nStringLength)
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{
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nTextLength = nStringLength - nIndex;
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}
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if(nDXArrayCount)
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{
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OSL_ENSURE(nDXArrayCount == nTextLength, "DXArray size does not correspond to text portion size (!)");
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std::vector< sal_Int32 > aIntegerDXArray(nDXArrayCount);
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for(sal_uInt32 a(0); a < nDXArrayCount; a++)
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{
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aIntegerDXArray[a] = basegfx::fround(rDXArray[a]);
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}
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return mrDevice.GetTextOutlines(
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rB2DPolyPolyVector,
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rText,
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nIndex,
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nIndex,
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nLength,
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true,
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0,
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&(aIntegerDXArray[0]));
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}
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else
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{
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return mrDevice.GetTextOutlines(
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rB2DPolyPolyVector,
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rText,
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nIndex,
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nIndex,
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nLength,
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true,
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0,
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0);
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}
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}
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basegfx::B2DRange TextLayouterDevice::getTextBoundRect(
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const String& rText,
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sal_uInt32 nIndex,
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sal_uInt32 nLength) const
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{
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sal_uInt32 nTextLength(nLength);
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const sal_uInt32 nStringLength(rText.Len());
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if(nTextLength + nIndex > nStringLength)
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{
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nTextLength = nStringLength - nIndex;
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}
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if(nTextLength)
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{
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Rectangle aRect;
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mrDevice.GetTextBoundRect(
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aRect,
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rText,
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nIndex,
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nIndex,
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nLength);
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// #i104432#, #i102556# take empty results into account
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if(!aRect.IsEmpty())
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{
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return basegfx::B2DRange(
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aRect.Left(), aRect.Top(),
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aRect.Right(), aRect.Bottom());
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}
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}
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return basegfx::B2DRange();
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}
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double TextLayouterDevice::getFontAscent() const
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{
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const ::FontMetric& rMetric = mrDevice.GetFontMetric();
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return rMetric.GetAscent();
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}
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double TextLayouterDevice::getFontDescent() const
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{
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const ::FontMetric& rMetric = mrDevice.GetFontMetric();
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return rMetric.GetDescent();
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}
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void TextLayouterDevice::addTextRectActions(
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const Rectangle& rRectangle,
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const String& rText,
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sal_uInt16 nStyle,
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GDIMetaFile& rGDIMetaFile) const
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{
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mrDevice.AddTextRectActions(
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rRectangle, rText, nStyle, rGDIMetaFile);
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}
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::std::vector< double > TextLayouterDevice::getTextArray(
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const String& rText,
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sal_uInt32 nIndex,
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sal_uInt32 nLength) const
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{
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::std::vector< double > aRetval;
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sal_uInt32 nTextLength(nLength);
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const sal_uInt32 nStringLength(rText.Len());
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if(nTextLength + nIndex > nStringLength)
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{
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nTextLength = nStringLength - nIndex;
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}
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if(nTextLength)
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{
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aRetval.reserve(nTextLength);
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::std::vector<sal_Int32> aArray(nTextLength);
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mrDevice.GetTextArray(rText, &aArray[0], nIndex, nLength);
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aRetval.assign(aArray.begin(), aArray.end());
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}
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return aRetval;
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}
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} // end of namespace primitive2d
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} // end of namespace drawinglayer
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//////////////////////////////////////////////////////////////////////////////
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// helper methods for vcl font handling
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namespace drawinglayer
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{
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namespace primitive2d
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{
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Font getVclFontFromFontAttribute(
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const attribute::FontAttribute& rFontAttribute,
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double fFontScaleX,
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double fFontScaleY,
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double fFontRotation,
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const ::com::sun::star::lang::Locale& rLocale)
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{
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// detect FontScaling
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const sal_uInt32 nHeight(basegfx::fround(fabs(fFontScaleY)));
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const sal_uInt32 nWidth(basegfx::fround(fabs(fFontScaleX)));
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const bool bFontIsScaled(nHeight != nWidth);
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#ifdef WIN32
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// for WIN32 systems, start with creating an unscaled font. If FontScaling
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// is wanted, that width needs to be adapted using FontMetric again to get a
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// width of the unscaled font
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Font aRetval(
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rFontAttribute.getFamilyName(),
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rFontAttribute.getStyleName(),
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Size(0, nHeight));
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#else
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// for non-WIN32 systems things are easier since these accept a Font creation
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// with initially nWidth != nHeight for FontScaling. Despite that, use zero for
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// FontWidth when no scaling is used to explicitly have that zero when e.g. the
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// Font would be recorded in a MetaFile (The MetaFile FontAction WILL record a
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// set FontWidth; import that in a WIN32 system, and trouble is there)
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Font aRetval(
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rFontAttribute.getFamilyName(),
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rFontAttribute.getStyleName(),
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Size(bFontIsScaled ? nWidth : 0, nHeight));
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#endif
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// define various other FontAttribute
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aRetval.SetAlign(ALIGN_BASELINE);
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aRetval.SetCharSet(rFontAttribute.getSymbol() ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE);
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aRetval.SetVertical(rFontAttribute.getVertical() ? sal_True : sal_False);
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aRetval.SetWeight(static_cast<FontWeight>(rFontAttribute.getWeight()));
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aRetval.SetItalic(rFontAttribute.getItalic() ? ITALIC_NORMAL : ITALIC_NONE);
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aRetval.SetOutline(rFontAttribute.getOutline());
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aRetval.SetPitch(rFontAttribute.getMonospaced() ? PITCH_FIXED : PITCH_VARIABLE);
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aRetval.SetLanguage(MsLangId::convertLocaleToLanguage(rLocale));
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#ifdef WIN32
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// for WIN32 systems, correct the FontWidth if FontScaling is used
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if(bFontIsScaled && nHeight > 0)
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{
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const FontMetric aUnscaledFontMetric(Application::GetDefaultDevice()->GetFontMetric(aRetval));
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if(aUnscaledFontMetric.GetWidth() > 0)
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{
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const double fScaleFactor((double)nWidth / (double)nHeight);
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const sal_uInt32 nScaledWidth(basegfx::fround((double)aUnscaledFontMetric.GetWidth() * fScaleFactor));
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aRetval.SetWidth(nScaledWidth);
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}
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}
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#endif
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// handle FontRotation (if defined)
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if(!basegfx::fTools::equalZero(fFontRotation))
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{
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sal_Int16 aRotate10th((sal_Int16)(fFontRotation * (-1800.0/F_PI)));
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aRetval.SetOrientation(aRotate10th % 3600);
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}
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return aRetval;
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}
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attribute::FontAttribute getFontAttributeFromVclFont(
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basegfx::B2DVector& o_rSize,
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const Font& rFont,
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bool bRTL,
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bool bBiDiStrong)
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{
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const attribute::FontAttribute aRetval(
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rFont.GetName(),
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rFont.GetStyleName(),
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static_cast<sal_uInt16>(rFont.GetWeight()),
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RTL_TEXTENCODING_SYMBOL == rFont.GetCharSet(),
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rFont.IsVertical(),
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ITALIC_NONE != rFont.GetItalic(),
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PITCH_FIXED == rFont.GetPitch(),
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rFont.IsOutline(),
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bRTL,
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bBiDiStrong);
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// TODO: eKerning
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// set FontHeight and init to no FontScaling
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o_rSize.setY(rFont.GetSize().getHeight() > 0 ? rFont.GetSize().getHeight() : 0);
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o_rSize.setX(o_rSize.getY());
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#ifdef WIN32
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// for WIN32 systems, the FontScaling at the Font is detected by
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// checking that FontWidth != 0. When FontScaling is used, WIN32
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// needs to do extra stuff to detect the correct width (since it's
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// zero and not equal the font height) and it's relationship to
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// the height
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if(rFont.GetSize().getWidth() > 0)
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{
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Font aUnscaledFont(rFont);
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aUnscaledFont.SetWidth(0);
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const FontMetric aUnscaledFontMetric(Application::GetDefaultDevice()->GetFontMetric(aUnscaledFont));
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if(aUnscaledFontMetric.GetWidth() > 0)
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{
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const double fScaleFactor((double)rFont.GetSize().getWidth() / (double)aUnscaledFontMetric.GetWidth());
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o_rSize.setX(fScaleFactor * o_rSize.getY());
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}
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}
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#else
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// For non-WIN32 systems the detection is the same, but the value
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// is easier achieved since width == height is interpreted as no
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// scaling. Ergo, Width == 0 means width == height, and width != 0
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// means the scaling is in the direct relation of width to height
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if(rFont.GetSize().getWidth() > 0)
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{
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o_rSize.setX((double)rFont.GetSize().getWidth());
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}
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#endif
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return aRetval;
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}
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} // end of namespace primitive2d
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} // end of namespace drawinglayer
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//////////////////////////////////////////////////////////////////////////////
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// eof
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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