Bug Summary

File:home/maarten/src/libreoffice/core/include/rtl/ref.hxx
Warning:line 192, column 9
Use of memory after it is freed

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name compressgraphicdialog.cxx -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/11.0.0 -D BOOST_ERROR_CODE_HEADER_ONLY -D BOOST_SYSTEM_NO_DEPRECATED -D CPPU_ENV=gcc3 -D LINUX -D OSL_DEBUG_LEVEL=1 -D SAL_LOG_INFO -D SAL_LOG_WARN -D UNIX -D UNX -D X86_64 -D _PTHREADS -D _REENTRANT -D SVX_DLLIMPLEMENTATION -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source/i18n -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source/common -I /home/maarten/src/libreoffice/core/external/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -I /home/maarten/src/libreoffice/core/svx/inc -I /home/maarten/src/libreoffice/core/svx/source/inc -I /home/maarten/src/libreoffice/core/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include/linux -I /home/maarten/src/libreoffice/core/config_host -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/normal -I /home/maarten/src/libreoffice/core/workdir/CustomTarget/officecfg/registry -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10 -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/x86_64-redhat-linux -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/11.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O0 -Wno-missing-braces -std=c++17 -fdeprecated-macro -fdebug-compilation-dir /home/maarten/src/libreoffice/core -ferror-limit 19 -fvisibility hidden -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -debug-info-kind=constructor -analyzer-output=html -faddrsig -o /home/maarten/tmp/wis/scan-build-libreoffice/output/report/2020-10-07-141433-9725-1 -x c++ /home/maarten/src/libreoffice/core/svx/source/dialog/compressgraphicdialog.cxx

/home/maarten/src/libreoffice/core/svx/source/dialog/compressgraphicdialog.cxx

→
1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20#include "dlgunit.hxx"
21#include <vcl/fieldvalues.hxx>
22#include <vcl/graph.hxx>
23#include <vcl/graphicfilter.hxx>
24#include <vcl/virdev.hxx>
25#include <vcl/svapp.hxx>
26#include <vcl/settings.hxx>
27#include <vcl/weld.hxx>
28#include <svx/strings.hrc>
29#include <svx/svdograf.hxx>
30#include <svx/sdgcpitm.hxx>
31#include <svx/dialmgr.hxx>
32#include <svx/compressgraphicdialog.hxx>
33#include <sfx2/dispatch.hxx>
34#include <sfx2/module.hxx>
35#include <comphelper/fileformat.h>
36#include <com/sun/star/uno/Sequence.hxx>
37#include <tools/stream.hxx>
38#include <unotools/localedatawrapper.hxx>
39
40using namespace com::sun::star::uno;
41using namespace com::sun::star::beans;
42
43CompressGraphicsDialog::CompressGraphicsDialog( weld::Window* pParent, SdrGrafObj* pGraphicObj, SfxBindings& rBindings ) :
44 GenericDialogController( pParent, "svx/ui/compressgraphicdialog.ui", "CompressGraphicDialog" ),
45 m_xGraphicObj ( pGraphicObj ),
46 m_aGraphic ( pGraphicObj->GetGraphicObject().GetGraphic() ),
47 m_aViewSize100mm ( pGraphicObj->GetLogicRect().GetSize() ),
48 m_rBindings ( rBindings ),
49 m_dResolution ( 300 )
50{
51 const SdrGrafCropItem& rCrop = m_xGraphicObj->GetMergedItem(SDRATTR_GRAFCROP);
52 m_aCropRectangle = tools::Rectangle(rCrop.GetLeft(), rCrop.GetTop(), rCrop.GetRight(), rCrop.GetBottom());
53
54 Initialize();
55}
56
57CompressGraphicsDialog::CompressGraphicsDialog( weld::Window* pParent, Graphic const & rGraphic, Size rViewSize100mm, tools::Rectangle const & rCropRectangle, SfxBindings& rBindings ) :
58 GenericDialogController( pParent, "svx/ui/compressgraphicdialog.ui", "CompressGraphicDialog" ),
59 m_xGraphicObj ( nullptr ),
60 m_aGraphic ( rGraphic ),
61 m_aViewSize100mm ( rViewSize100mm ),
62 m_aCropRectangle ( rCropRectangle ),
63 m_rBindings ( rBindings ),
64 m_dResolution ( 300 )
65{
66 Initialize();
67}
68
69CompressGraphicsDialog::~CompressGraphicsDialog()
70{
71}
72
73void CompressGraphicsDialog::Initialize()
74{
75 m_xLabelGraphicType = m_xBuilder->weld_label("label-graphic-type");
76 m_xFixedText2 = m_xBuilder->weld_label("label-original-size");
77 m_xFixedText3 = m_xBuilder->weld_label("label-view-size");
78 m_xFixedText5 = m_xBuilder->weld_label("label-image-capacity");
79 m_xFixedText6 = m_xBuilder->weld_label("label-new-capacity");
80 m_xJpegCompRB = m_xBuilder->weld_radio_button("radio-jpeg");
81 m_xCompressionMF = m_xBuilder->weld_spin_button("spin-compression");
82 m_xCompressionSlider = m_xBuilder->weld_scale("scale-compression");
83 m_xLosslessRB = m_xBuilder->weld_radio_button("radio-lossless");
84 m_xQualityMF = m_xBuilder->weld_spin_button("spin-quality");
85 m_xQualitySlider = m_xBuilder->weld_scale("scale-quality");
86 m_xReduceResolutionCB = m_xBuilder->weld_check_button("checkbox-reduce-resolution");
87 m_xMFNewWidth = m_xBuilder->weld_spin_button("spin-new-width");
88 m_xMFNewHeight = m_xBuilder->weld_spin_button("spin-new-height");
89 m_xResolutionLB = m_xBuilder->weld_combo_box("combo-resolution");
90 m_xBtnCalculate = m_xBuilder->weld_button("calculate");
91 m_xInterpolationCombo = m_xBuilder->weld_combo_box("interpolation-method-combo");
92
93 m_xInterpolationCombo->set_active_text("Lanczos");
94
95 m_xInterpolationCombo->connect_changed(LINK(this, CompressGraphicsDialog, NewInterpolationModifiedHdl)::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubNewInterpolationModifiedHdl
));
96
97 m_xMFNewWidth->connect_changed( LINK( this, CompressGraphicsDialog, NewWidthModifiedHdl )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubNewWidthModifiedHdl
));
98 m_xMFNewHeight->connect_changed( LINK( this, CompressGraphicsDialog, NewHeightModifiedHdl )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubNewHeightModifiedHdl
));
99
100 m_xResolutionLB->connect_changed( LINK( this, CompressGraphicsDialog, ResolutionModifiedHdl )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubResolutionModifiedHdl
));
101 m_xBtnCalculate->connect_clicked( LINK( this, CompressGraphicsDialog, CalculateClickHdl )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubCalculateClickHdl
) );
102
103 m_xLosslessRB->connect_toggled( LINK( this, CompressGraphicsDialog, ToggleCompressionRB )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubToggleCompressionRB
) );
104 m_xJpegCompRB->connect_toggled( LINK( this, CompressGraphicsDialog, ToggleCompressionRB )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubToggleCompressionRB
) );
105
106 m_xReduceResolutionCB->connect_toggled( LINK( this, CompressGraphicsDialog, ToggleReduceResolutionRB )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubToggleReduceResolutionRB
) );
107
108 m_xQualitySlider->connect_value_changed( LINK( this, CompressGraphicsDialog, SlideHdl )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubSlideHdl));
109 m_xCompressionSlider->connect_value_changed( LINK( this, CompressGraphicsDialog, SlideHdl )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubSlideHdl));
110 m_xQualityMF->connect_changed( LINK( this, CompressGraphicsDialog, NewQualityModifiedHdl )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubNewQualityModifiedHdl
));
111 m_xCompressionMF->connect_changed( LINK( this, CompressGraphicsDialog, NewCompressionModifiedHdl )::tools::detail::makeLink( ::tools::detail::castTo<CompressGraphicsDialog
*>(this), &CompressGraphicsDialog::LinkStubNewCompressionModifiedHdl
));
112
113 m_xJpegCompRB->set_active(true);
114 m_xReduceResolutionCB->set_active(true);
115
116 UpdateNewWidthMF();
117 UpdateNewHeightMF();
118 UpdateResolutionLB();
119 Update();
120}
121
122void CompressGraphicsDialog::Update()
123{
124 GfxLinkType aLinkType = m_aGraphic.GetGfxLink().GetType();
125 OUString aGraphicTypeString;
126 switch(aLinkType)
3
←
Control jumps to 'case NativePct:' at line 146
→
127 {
128 case GfxLinkType::NativeGif:
129 aGraphicTypeString = SvxResId(STR_IMAGE_GIFreinterpret_cast<char const *>("STR_IMAGE_GIF" "\004" u8"Gif image"
));
130 break;
131 case GfxLinkType::NativeJpg:
132 aGraphicTypeString = SvxResId(STR_IMAGE_JPEGreinterpret_cast<char const *>("STR_IMAGE_JPEG" "\004" u8"Jpeg image"
));
133 break;
134 case GfxLinkType::NativePng:
135 aGraphicTypeString = SvxResId(STR_IMAGE_PNGreinterpret_cast<char const *>("STR_IMAGE_PNG" "\004" u8"PNG image"
));
136 break;
137 case GfxLinkType::NativeTif:
138 aGraphicTypeString = SvxResId(STR_IMAGE_TIFFreinterpret_cast<char const *>("STR_IMAGE_TIFF" "\004" u8"TIFF image"
));
139 break;
140 case GfxLinkType::NativeWmf:
141 aGraphicTypeString = SvxResId(STR_IMAGE_WMFreinterpret_cast<char const *>("STR_IMAGE_WMF" "\004" u8"WMF image"
));
142 break;
143 case GfxLinkType::NativeMet:
144 aGraphicTypeString = SvxResId(STR_IMAGE_METreinterpret_cast<char const *>("STR_IMAGE_MET" "\004" u8"MET image"
));
145 break;
146 case GfxLinkType::NativePct:
147 aGraphicTypeString = SvxResId(STR_IMAGE_PCTreinterpret_cast<char const *>("STR_IMAGE_PCT" "\004" u8"PCT image"
));
148 break;
4
←
 Execution continues on line 159
→
149 case GfxLinkType::NativeSvg:
150 aGraphicTypeString = SvxResId(STR_IMAGE_SVGreinterpret_cast<char const *>("STR_IMAGE_SVG" "\004" u8"SVG image"
));
151 break;
152 case GfxLinkType::NativeBmp:
153 aGraphicTypeString = SvxResId(STR_IMAGE_BMPreinterpret_cast<char const *>("STR_IMAGE_BMP" "\004" u8"BMP image"
));
154 break;
155 default:
156 aGraphicTypeString = SvxResId(STR_IMAGE_UNKNOWNreinterpret_cast<char const *>("STR_IMAGE_UNKNOWN" "\004"
u8"Unknown"));
157 break;
158 }
159 m_xLabelGraphicType->set_label(aGraphicTypeString);
160
161 const FieldUnit eFieldUnit = m_rBindings.GetDispatcher()->GetModule()->GetFieldUnit();
162 const LocaleDataWrapper& rLocaleWrapper( Application::GetSettings().GetLocaleDataWrapper() );
163 sal_Unicode cSeparator = rLocaleWrapper.getNumDecimalSep()[0];
164
165 ScopedVclPtrInstance<VirtualDevice> pDummyVDev;
5
←
Calling default constructor for 'ScopedVclPtrInstance<VirtualDevice>'
→
7
←
Returning from default constructor for 'ScopedVclPtrInstance<VirtualDevice>'
→
166 pDummyVDev->EnableOutput( false );
167 pDummyVDev->SetMapMode( m_aGraphic.GetPrefMapMode() );
168
169 Size aPixelSize = m_aGraphic.GetSizePixel();
170 Size aOriginalSize100mm(pDummyVDev->PixelToLogic(m_aGraphic.GetSizePixel(), MapMode(MapUnit::Map100thMM)));
171
172 OUString aBitmapSizeString = SvxResId(STR_IMAGE_ORIGINAL_SIZEreinterpret_cast<char const *>("STR_IMAGE_ORIGINAL_SIZE"
"\004" u8"$(WIDTH) x $(HEIGHT) ($(WIDTH_IN_PX) x $(HEIGHT_IN_PX) px)"
));
173 OUString aWidthString = GetUnitString( aOriginalSize100mm.Width(), eFieldUnit, cSeparator );
174 OUString aHeightString = GetUnitString( aOriginalSize100mm.Height(), eFieldUnit, cSeparator );
175 aBitmapSizeString = aBitmapSizeString.replaceAll("$(WIDTH)", aWidthString);
176 aBitmapSizeString = aBitmapSizeString.replaceAll("$(HEIGHT)", aHeightString);
177 aBitmapSizeString = aBitmapSizeString.replaceAll("$(WIDTH_IN_PX)", OUString::number(aPixelSize.Width()));
178 aBitmapSizeString = aBitmapSizeString.replaceAll("$(HEIGHT_IN_PX)", OUString::number(aPixelSize.Height()));
179 m_xFixedText2->set_label(aBitmapSizeString);
180
181 int aValX = static_cast<int>(aPixelSize.Width() / GetViewWidthInch());
182
183 OUString aViewSizeString = SvxResId(STR_IMAGE_VIEW_SIZEreinterpret_cast<char const *>("STR_IMAGE_VIEW_SIZE" "\004"
u8"$(WIDTH) x $(HEIGHT) at $(DPI) DPI"));
184
185 aWidthString = GetUnitString( m_aViewSize100mm.Width(), eFieldUnit, cSeparator );
186 aHeightString = GetUnitString( m_aViewSize100mm.Height(), eFieldUnit, cSeparator );
187 aViewSizeString = aViewSizeString.replaceAll("$(WIDTH)", aWidthString);
188 aViewSizeString = aViewSizeString.replaceAll("$(HEIGHT)", aHeightString);
189 aViewSizeString = aViewSizeString.replaceAll("$(DPI)", OUString::number(aValX));
190 m_xFixedText3->set_label(aViewSizeString);
191
192 SvMemoryStream aMemStream;
193 aMemStream.SetVersion( SOFFICE_FILEFORMAT_CURRENT6800 );
194 m_aGraphic.ExportNative(aMemStream);
195 sal_Int32 aNativeSize = aMemStream.TellEnd();
196
197 OUString aNativeSizeString = SvxResId(STR_IMAGE_CAPACITYreinterpret_cast<char const *>("STR_IMAGE_CAPACITY" "\004"
u8"$(CAPACITY) kiB"));
198 aNativeSizeString = aNativeSizeString.replaceAll("$(CAPACITY)", OUString::number(aNativeSize / 1024));
199 m_xFixedText5->set_label(aNativeSizeString);
200
201 m_xFixedText6->set_label("??");
202}
8
←
Calling implicit destructor for 'ScopedVclPtrInstance<VirtualDevice>'
→
9
←
Calling '~ScopedVclPtr'
→
203
204void CompressGraphicsDialog::UpdateNewWidthMF()
205{
206 int nPixelX = static_cast<sal_Int32>( GetViewWidthInch() * m_dResolution );
207 m_xMFNewWidth->set_value(nPixelX);
208}
209
210void CompressGraphicsDialog::UpdateNewHeightMF()
211{
212 int nPixelY = static_cast<sal_Int32>( GetViewHeightInch() * m_dResolution );
213 m_xMFNewHeight->set_value(nPixelY);
214}
215
216void CompressGraphicsDialog::UpdateResolutionLB()
217{
218 m_xResolutionLB->set_entry_text( OUString::number( static_cast<sal_Int32>(m_dResolution) ) );
219}
220
221double CompressGraphicsDialog::GetViewWidthInch() const
222{
223 return static_cast<double>(vcl::ConvertValue(m_aViewSize100mm.Width(), 2, MapUnit::Map100thMM, FieldUnit::INCH)) / 100.0;
224}
225
226double CompressGraphicsDialog::GetViewHeightInch() const
227{
228 return static_cast<double>(vcl::ConvertValue(m_aViewSize100mm.Height(), 2, MapUnit::Map100thMM, FieldUnit::INCH)) / 100.0;
229}
230
231BmpScaleFlag CompressGraphicsDialog::GetSelectedInterpolationType() const
232{
233 OUString aSelectionText = m_xInterpolationCombo->get_active_text();
234
235 if( aSelectionText == "Lanczos" ) {
236 return BmpScaleFlag::Lanczos;
237 } else if( aSelectionText == "Bilinear" ) {
238 return BmpScaleFlag::BiLinear;
239 } else if( aSelectionText == "Bicubic" ) {
240 return BmpScaleFlag::BiCubic;
241 } else if ( aSelectionText == "None" ) {
242 return BmpScaleFlag::Fast;
243 }
244 return BmpScaleFlag::BestQuality;
245}
246
247void CompressGraphicsDialog::Compress(SvStream& aStream)
248{
249 BitmapEx aBitmap = m_aGraphic.GetBitmapEx();
250 if ( m_xReduceResolutionCB->get_active() )
251 {
252 long nPixelX = static_cast<long>( GetViewWidthInch() * m_dResolution );
253 long nPixelY = static_cast<long>( GetViewHeightInch() * m_dResolution );
254
255 aBitmap.Scale( Size( nPixelX, nPixelY ), GetSelectedInterpolationType() );
256 }
257 Graphic aScaledGraphic( aBitmap );
258 GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
259
260 Sequence< PropertyValue > aFilterData( 3 );
261 aFilterData[ 0 ].Name = "Interlaced";
262 aFilterData[ 0 ].Value <<= sal_Int32(0);
263 aFilterData[ 1 ].Name = "Compression";
264 aFilterData[ 1 ].Value <<= static_cast<sal_Int32>(m_xCompressionMF->get_value());
265 aFilterData[ 2 ].Name = "Quality";
266 aFilterData[ 2 ].Value <<= static_cast<sal_Int32>(m_xQualityMF->get_value());
267
268 OUString aGraphicFormatName = m_xLosslessRB->get_active() ? OUString( "png" ) : OUString( "jpg" );
269
270 sal_uInt16 nFilterFormat = rFilter.GetExportFormatNumberForShortName( aGraphicFormatName );
271 rFilter.ExportGraphic( aScaledGraphic, "none", aStream, nFilterFormat, &aFilterData );
272}
273
274IMPL_LINK_NOARG( CompressGraphicsDialog, NewWidthModifiedHdl, weld::Entry&, void )void CompressGraphicsDialog::LinkStubNewWidthModifiedHdl(void
* instance, weld::Entry& data) { return static_cast<CompressGraphicsDialog
*>(instance)->NewWidthModifiedHdl(data); } void CompressGraphicsDialog
::NewWidthModifiedHdl(__attribute__ ((unused)) weld::Entry&
)
275{
276 m_dResolution = m_xMFNewWidth->get_value() / GetViewWidthInch();
277
278 UpdateNewHeightMF();
279 UpdateResolutionLB();
280 Update();
281}
282
283IMPL_LINK( CompressGraphicsDialog, SlideHdl, weld::Scale&, rScale, void )void CompressGraphicsDialog::LinkStubSlideHdl(void * instance
, weld::Scale& data) { return static_cast<CompressGraphicsDialog
*>(instance)->SlideHdl(data); } void CompressGraphicsDialog
::SlideHdl(weld::Scale& rScale)
284{
285 if (&rScale == m_xQualitySlider.get())
286 m_xQualityMF->set_value(m_xQualitySlider->get_value());
287 else
288 m_xCompressionMF->set_value(m_xCompressionSlider->get_value());
289 Update();
290}
291
292IMPL_LINK_NOARG( CompressGraphicsDialog, NewInterpolationModifiedHdl, weld::ComboBox&, void )void CompressGraphicsDialog::LinkStubNewInterpolationModifiedHdl
(void * instance, weld::ComboBox& data) { return static_cast
<CompressGraphicsDialog *>(instance)->NewInterpolationModifiedHdl
(data); } void CompressGraphicsDialog::NewInterpolationModifiedHdl
(__attribute__ ((unused)) weld::ComboBox&)
293{
294 Update();
295}
296
297IMPL_LINK_NOARG( CompressGraphicsDialog, NewQualityModifiedHdl, weld::Entry&, void )void CompressGraphicsDialog::LinkStubNewQualityModifiedHdl(void
* instance, weld::Entry& data) { return static_cast<CompressGraphicsDialog
*>(instance)->NewQualityModifiedHdl(data); } void CompressGraphicsDialog
::NewQualityModifiedHdl(__attribute__ ((unused)) weld::Entry&
)
298{
299 m_xQualitySlider->set_value(m_xQualityMF->get_value());
300 Update();
301}
302
303IMPL_LINK_NOARG( CompressGraphicsDialog, NewCompressionModifiedHdl, weld::Entry&, void )void CompressGraphicsDialog::LinkStubNewCompressionModifiedHdl
(void * instance, weld::Entry& data) { return static_cast
<CompressGraphicsDialog *>(instance)->NewCompressionModifiedHdl
(data); } void CompressGraphicsDialog::NewCompressionModifiedHdl
(__attribute__ ((unused)) weld::Entry&)
304{
305 m_xCompressionSlider->set_value(m_xCompressionMF->get_value());
306 Update();
307}
308
309IMPL_LINK_NOARG( CompressGraphicsDialog, NewHeightModifiedHdl, weld::Entry&, void )void CompressGraphicsDialog::LinkStubNewHeightModifiedHdl(void
* instance, weld::Entry& data) { return static_cast<CompressGraphicsDialog
*>(instance)->NewHeightModifiedHdl(data); } void CompressGraphicsDialog
::NewHeightModifiedHdl(__attribute__ ((unused)) weld::Entry&
)
310{
311 m_dResolution = m_xMFNewHeight->get_value() / GetViewHeightInch();
312
313 UpdateNewWidthMF();
314 UpdateResolutionLB();
315 Update();
316}
317
318IMPL_LINK_NOARG( CompressGraphicsDialog, ResolutionModifiedHdl, weld::ComboBox&, void )void CompressGraphicsDialog::LinkStubResolutionModifiedHdl(void
* instance, weld::ComboBox& data) { return static_cast<
CompressGraphicsDialog *>(instance)->ResolutionModifiedHdl
(data); } void CompressGraphicsDialog::ResolutionModifiedHdl(
__attribute__ ((unused)) weld::ComboBox&)
319{
320 m_dResolution = static_cast<double>(m_xResolutionLB->get_active_text().toInt32());
321
322 UpdateNewWidthMF();
323 UpdateNewHeightMF();
324 Update();
325}
326
327IMPL_LINK_NOARG( CompressGraphicsDialog, ToggleCompressionRB, weld::ToggleButton&, void )void CompressGraphicsDialog::LinkStubToggleCompressionRB(void
* instance, weld::ToggleButton& data) { return static_cast
<CompressGraphicsDialog *>(instance)->ToggleCompressionRB
(data); } void CompressGraphicsDialog::ToggleCompressionRB(__attribute__
((unused)) weld::ToggleButton&)
328{
329 bool choice = m_xLosslessRB->get_active();
330 m_xCompressionMF->set_sensitive(choice);
331 m_xCompressionSlider->set_sensitive(choice);
332 m_xQualityMF->set_sensitive(!choice);
333 m_xQualitySlider->set_sensitive(!choice);
334 Update();
335}
336
337IMPL_LINK_NOARG( CompressGraphicsDialog, ToggleReduceResolutionRB, weld::ToggleButton&, void )void CompressGraphicsDialog::LinkStubToggleReduceResolutionRB
(void * instance, weld::ToggleButton& data) { return static_cast
<CompressGraphicsDialog *>(instance)->ToggleReduceResolutionRB
(data); } void CompressGraphicsDialog::ToggleReduceResolutionRB
(__attribute__ ((unused)) weld::ToggleButton&)
1
Calling 'CompressGraphicsDialog::ToggleReduceResolutionRB'
→
338{
339 bool choice = m_xReduceResolutionCB->get_active();
340 m_xMFNewWidth->set_sensitive(choice);
341 m_xMFNewHeight->set_sensitive(choice);
342 m_xResolutionLB->set_sensitive(choice);
343 m_xInterpolationCombo->set_sensitive(choice);
344 Update();
2
←
Calling 'CompressGraphicsDialog::Update'
→
345}
346
347IMPL_LINK_NOARG( CompressGraphicsDialog, CalculateClickHdl, weld::Button&, void )void CompressGraphicsDialog::LinkStubCalculateClickHdl(void *
instance, weld::Button& data) { return static_cast<CompressGraphicsDialog
*>(instance)->CalculateClickHdl(data); } void CompressGraphicsDialog
::CalculateClickHdl(__attribute__ ((unused)) weld::Button&
)
348{
349 sal_Int32 aSize = 0;
350
351 if ( m_dResolution > 0.0 )
352 {
353 SvMemoryStream aMemStream;
354 aMemStream.SetVersion( SOFFICE_FILEFORMAT_CURRENT6800 );
355 Compress( aMemStream );
356 aSize = aMemStream.TellEnd();
357 }
358
359 if ( aSize > 0 )
360 {
361 OUString aSizeAsString = OUString::number(aSize / 1024);
362
363 OUString aNewSizeString = SvxResId(STR_IMAGE_CAPACITYreinterpret_cast<char const *>("STR_IMAGE_CAPACITY" "\004"
u8"$(CAPACITY) kiB"));
364 aNewSizeString = aNewSizeString.replaceAll("$(CAPACITY)", aSizeAsString);
365 m_xFixedText6->set_label(aNewSizeString);
366 }
367}
368
369tools::Rectangle CompressGraphicsDialog::GetScaledCropRectangle() const
370{
371 if ( m_xReduceResolutionCB->get_active() )
372 {
373 long nPixelX = static_cast<long>( GetViewWidthInch() * m_dResolution );
374 long nPixelY = static_cast<long>( GetViewHeightInch() * m_dResolution );
375 Size aSize = m_aGraphic.GetBitmapEx().GetSizePixel();
376 double aScaleX = nPixelX / static_cast<double>(aSize.Width());
377 double aScaleY = nPixelY / static_cast<double>(aSize.Height());
378
379 return tools::Rectangle(
380 m_aCropRectangle.Left() * aScaleX,
381 m_aCropRectangle.Top() * aScaleY,
382 m_aCropRectangle.Right() * aScaleX,
383 m_aCropRectangle.Bottom()* aScaleY);
384 }
385 else
386 {
387 return m_aCropRectangle;
388 }
389}
390
391Graphic CompressGraphicsDialog::GetCompressedGraphic()
392{
393 if ( m_dResolution > 0.0 )
394 {
395 SvMemoryStream aMemStream;
396 aMemStream.SetVersion( SOFFICE_FILEFORMAT_CURRENT6800 );
397 Compress( aMemStream );
398 aMemStream.Seek( STREAM_SEEK_TO_BEGIN0L );
399 Graphic aResultGraphic;
400 GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
401 rFilter.ImportGraphic( aResultGraphic, OUString("import"), aMemStream );
402
403 return aResultGraphic;
404 }
405 return Graphic();
406}
407
408SdrGrafObj* CompressGraphicsDialog::GetCompressedSdrGrafObj()
409{
410 if ( m_dResolution > 0.0 )
411 {
412 SdrGrafObj* pNewObject(m_xGraphicObj->CloneSdrObject(m_xGraphicObj->getSdrModelFromSdrObject()));
413
414 if ( m_xReduceResolutionCB->get_active() )
415 {
416 tools::Rectangle aScaledCropedRectangle = GetScaledCropRectangle();
417 SdrGrafCropItem aNewCrop(
418 aScaledCropedRectangle.Left(),
419 aScaledCropedRectangle.Top(),
420 aScaledCropedRectangle.Right(),
421 aScaledCropedRectangle.Bottom());
422
423 pNewObject->SetMergedItem(aNewCrop);
424 }
425 pNewObject->SetGraphic( GetCompressedGraphic() );
426
427 return pNewObject;
428 }
429 return nullptr;
430}
431
432/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx

→
1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20#ifndef INCLUDED_VCL_PTR_HXX
21#define INCLUDED_VCL_PTR_HXX
22
23#include <sal/config.h>
24
25#include <rtl/ref.hxx>
26
27#include <utility>
28#include <type_traits>
29
30#ifdef DBG_UTIL
31#ifndef _WIN32
32#include <vcl/vclmain.hxx>
33#endif
34#endif
35
36class VclReferenceBase;
37
38namespace vcl::detail {
39
40template<typename>
41constexpr bool isIncompleteOrDerivedFromVclReferenceBase(...) { return true; }
42
43template<typename T> constexpr bool isIncompleteOrDerivedFromVclReferenceBase(
44 int (*)[sizeof(T)])
45{ return std::is_base_of<VclReferenceBase, T>::value; }
46
47} // namespace vcl::detail
48
49/**
50 * A thin wrapper around rtl::Reference to implement the acquire and dispose semantics we want for references to vcl::Window subclasses.
51 *
52 * For more details on the design please see vcl/README.lifecycle
53 *
54 * @param reference_type must be a subclass of vcl::Window
55 */
56template <class reference_type>
57class VclPtr
58{
59 static_assert(
60 vcl::detail::isIncompleteOrDerivedFromVclReferenceBase<reference_type>(
61 nullptr),
62 "template argument type must be derived from VclReferenceBase");
63
64 ::rtl::Reference<reference_type> m_rInnerRef;
65
66public:
67 /** Constructor...
68 */
69 VclPtr()
70 : m_rInnerRef()
71 {}
72
73 /** Constructor...
74 */
75 VclPtr (reference_type * pBody)
76 : m_rInnerRef(pBody)
77 {}
78
79 /** Constructor... that doesn't take a ref.
80 */
81 VclPtr (reference_type * pBody, __sal_NoAcquire)
82 : m_rInnerRef(pBody, SAL_NO_ACQUIRE)
83 {}
84
85 /** Up-casting conversion constructor: Copies interface reference.
86
87 Does not work for up-casts to ambiguous bases. For the special case of
88 up-casting to Reference< XInterface >, see the corresponding conversion
89 operator.
90
91 @param rRef another reference
92 */
93 template< class derived_type >
94 VclPtr(
95 const VclPtr< derived_type > & rRef,
96 typename std::enable_if<
97 std::is_base_of<reference_type, derived_type>::value, int>::type
98 = 0 )
99 : m_rInnerRef( static_cast<reference_type*>(rRef) )
100 {
101 }
102
103#if defined(DBG_UTIL) && !defined(_WIN32)
104 virtual ~VclPtr()
105 {
106 assert(m_rInnerRef.get() == nullptr || vclmain::isAlive())(static_cast <bool> (m_rInnerRef.get() == nullptr || vclmain
::isAlive()) ? void (0) : __assert_fail ("m_rInnerRef.get() == nullptr || vclmain::isAlive()"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 106, __extension__ __PRETTY_FUNCTION__));
107 // We can be one of the intermediate counts, but if we are the last
108 // VclPtr keeping this object alive, then something forgot to call dispose().
109 assert((!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1)(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__))
110 && "someone forgot to call dispose()")(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__));
111 }
112 VclPtr(VclPtr const &) = default;
113 VclPtr(VclPtr &&) = default;
114 VclPtr & operator =(VclPtr const &) = default;
115 VclPtr & operator =(VclPtr &&) = default;
116#endif
117
118 /**
119 * A construction helper for VclPtr. Since VclPtr types are created
120 * with a reference-count of one - to help fit into the existing
121 * code-flow; this helps us to construct them easily.
122 *
123 * For more details on the design please see vcl/README.lifecycle
124 *
125 * @tparam reference_type must be a subclass of vcl::Window
126 */
127 template<typename... Arg> [[nodiscard]] static VclPtr< reference_type > Create(Arg &&... arg)
128 {
129 return VclPtr< reference_type >( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE );
130 }
131
132 /** Probably most common used: handle->someBodyOp().
133 */
134 reference_type * operator->() const
135 {
136 return m_rInnerRef.get();
137 }
138
139 /** Get the body. Can be used instead of operator->().
140 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
141 are the same.
142 */
143 reference_type * get() const
144 {
145 return m_rInnerRef.get();
146 }
147
148 void set(reference_type *pBody)
149 {
150 m_rInnerRef.set(pBody);
151 }
152
153 void reset(reference_type *pBody)
154 {
155 m_rInnerRef.set(pBody);
156 }
157
158 /** Up-casting copy assignment operator.
159
160 Does not work for up-casts to ambiguous bases.
161
162 @param rRef another reference
163 */
164 template<typename derived_type>
165 typename std::enable_if<
166 std::is_base_of<reference_type, derived_type>::value,
167 VclPtr &>::type
168 operator =(VclPtr<derived_type> const & rRef)
169 {
170 m_rInnerRef.set(rRef.get());
171 return *this;
172 }
173
174 VclPtr & operator =(reference_type * pBody)
175 {
176 m_rInnerRef.set(pBody);
177 return *this;
178 }
179
180 operator reference_type * () const
181 {
182 return m_rInnerRef.get();
183 }
184
185 explicit operator bool () const
186 {
187 return m_rInnerRef.get() != nullptr;
188 }
189
190 void clear()
191 {
192 m_rInnerRef.clear();
193 }
194
195 void reset()
196 {
197 m_rInnerRef.clear();
198 }
199
200 void disposeAndClear()
201 {
202 // hold it alive for the lifetime of this method
203 ::rtl::Reference<reference_type> aTmp(m_rInnerRef);
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
11
←
Calling 'Reference::clear'
→
18
←
Returning; memory was released
→
205 if (aTmp.get()) {
19
←
Calling 'Reference::get'
→
206 aTmp->disposeOnce();
207 }
208 }
209
210 /** Needed to place VclPtr's into STL collection.
211 */
212 bool operator< (const VclPtr<reference_type> & handle) const
213 {
214 return (m_rInnerRef < handle.m_rInnerRef);
215 }
216}; // class VclPtr
217
218template<typename T1, typename T2>
219inline bool operator ==(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
220 return p1.get() == p2.get();
221}
222
223template<typename T> inline bool operator ==(VclPtr<T> const & p1, T const * p2)
224{
225 return p1.get() == p2;
226}
227
228template<typename T> inline bool operator ==(VclPtr<T> const & p1, T * p2) {
229 return p1.get() == p2;
230}
231
232template<typename T> inline bool operator ==(T const * p1, VclPtr<T> const & p2)
233{
234 return p1 == p2.get();
235}
236
237template<typename T> inline bool operator ==(T * p1, VclPtr<T> const & p2) {
238 return p1 == p2.get();
239}
240
241template<typename T1, typename T2>
242inline bool operator !=(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
243 return !(p1 == p2);
244}
245
246template<typename T> inline bool operator !=(VclPtr<T> const & p1, T const * p2)
247{
248 return !(p1 == p2);
249}
250
251template<typename T> inline bool operator !=(VclPtr<T> const & p1, T * p2) {
252 return !(p1 == p2);
253}
254
255template<typename T> inline bool operator !=(T const * p1, VclPtr<T> const & p2)
256{
257 return !(p1 == p2);
258}
259
260template<typename T> inline bool operator !=(T * p1, VclPtr<T> const & p2) {
261 return !(p1 == p2);
262}
263
264/**
265 * A construction helper for a temporary VclPtr. Since VclPtr types
266 * are created with a reference-count of one - to help fit into
267 * the existing code-flow; this helps us to construct them easily.
268 * see also VclPtr::Create and ScopedVclPtr
269 *
270 * For more details on the design please see vcl/README.lifecycle
271 *
272 * @param reference_type must be a subclass of vcl::Window
273 */
274template <class reference_type>
275class SAL_WARN_UNUSED__attribute__((warn_unused)) VclPtrInstance final : public VclPtr<reference_type>
276{
277public:
278 template<typename... Arg> VclPtrInstance(Arg &&... arg)
279 : VclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
280 {
281 }
282
283 /**
284 * Override and disallow this, to prevent people accidentally calling it and actually
285 * getting VclPtr::Create and getting a naked VclPtr<> instance
286 */
287 template<typename... Arg> static VclPtrInstance< reference_type > Create(Arg &&... ) = delete;
288};
289
290template <class reference_type>
291class ScopedVclPtr : public VclPtr<reference_type>
292{
293public:
294 /** Constructor...
295 */
296 ScopedVclPtr()
297 : VclPtr<reference_type>()
298 {}
299
300 /** Constructor
301 */
302 ScopedVclPtr (reference_type * pBody)
303 : VclPtr<reference_type>(pBody)
304 {}
305
306 /** Copy constructor...
307 */
308 ScopedVclPtr (const VclPtr<reference_type> & handle)
309 : VclPtr<reference_type>(handle)
310 {}
311
312 /**
313 Assignment that releases the last reference.
314 */
315 void disposeAndReset(reference_type *pBody)
316 {
317 if (pBody != this->get()) {
318 VclPtr<reference_type>::disposeAndClear();
319 VclPtr<reference_type>::set(pBody);
320 }
321 }
322
323 /**
324 Assignment that releases the last reference.
325 */
326 ScopedVclPtr<reference_type>& operator = (reference_type * pBody)
327 {
328 disposeAndReset(pBody);
329 return *this;
330 }
331
332 /** Up-casting conversion constructor: Copies interface reference.
333
334 Does not work for up-casts to ambiguous bases. For the special case of
335 up-casting to Reference< XInterface >, see the corresponding conversion
336 operator.
337
338 @param rRef another reference
339 */
340 template< class derived_type >
341 ScopedVclPtr(
342 const VclPtr< derived_type > & rRef,
343 typename std::enable_if<
344 std::is_base_of<reference_type, derived_type>::value, int>::type
345 = 0 )
346 : VclPtr<reference_type>( rRef )
347 {
348 }
349
350 /** Up-casting assignment operator.
351
352 Does not work for up-casts to ambiguous bases.
353
354 @param rRef another VclPtr
355 */
356 template<typename derived_type>
357 typename std::enable_if<
358 std::is_base_of<reference_type, derived_type>::value,
359 ScopedVclPtr &>::type
360 operator =(VclPtr<derived_type> const & rRef)
361 {
362 disposeAndReset(rRef.get());
363 return *this;
364 }
365
366 /**
367 * Override and disallow this, to prevent people accidentally calling it and actually
368 * getting VclPtr::Create and getting a naked VclPtr<> instance
369 */
370 template<typename... Arg> static ScopedVclPtr< reference_type > Create(Arg &&... ) = delete;
371
372 ~ScopedVclPtr()
373 {
374 VclPtr<reference_type>::disposeAndClear();
10
←
Calling 'VclPtr::disposeAndClear'
→
375 assert(VclPtr<reference_type>::get() == nullptr)(static_cast <bool> (VclPtr<reference_type>::get(
) == nullptr) ? void (0) : __assert_fail ("VclPtr<reference_type>::get() == nullptr"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 375, __extension__ __PRETTY_FUNCTION__)); // make sure there are no lingering references
376 }
377
378private:
379 // Most likely we don't want this default copy-constructor.
380 ScopedVclPtr (const ScopedVclPtr<reference_type> &) = delete;
381 // And certainly we don't want a default assignment operator.
382 ScopedVclPtr<reference_type>& operator = (const ScopedVclPtr<reference_type> &) = delete;
383 // And disallow reset as that doesn't call disposeAndClear on the original reference
384 void reset() = delete;
385 void reset(reference_type *pBody) = delete;
386
387protected:
388 ScopedVclPtr (reference_type * pBody, __sal_NoAcquire)
389 : VclPtr<reference_type>(pBody, SAL_NO_ACQUIRE)
390 {}
391};
392
393/**
394 * A construction helper for ScopedVclPtr. Since VclPtr types are created
395 * with a reference-count of one - to help fit into the existing
396 * code-flow; this helps us to construct them easily.
397 *
398 * For more details on the design please see vcl/README.lifecycle
399 *
400 * @param reference_type must be a subclass of vcl::Window
401 */
402#if defined _MSC_VER
403#pragma warning(push)
404#pragma warning(disable: 4521) // " multiple copy constructors specified"
405#endif
406template <class reference_type>
407class SAL_WARN_UNUSED__attribute__((warn_unused)) ScopedVclPtrInstance final : public ScopedVclPtr<reference_type>
408{
409public:
410 template<typename... Arg> ScopedVclPtrInstance(Arg &&... arg)
411 : ScopedVclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
6
←
Memory is allocated
→
412 {
413 }
414
415 /**
416 * Override and disallow this, to prevent people accidentally calling it and actually
417 * getting VclPtr::Create and getting a naked VclPtr<> instance
418 */
419 template<typename... Arg> static ScopedVclPtrInstance< reference_type > Create(Arg &&...) = delete;
420
421private:
422 // Prevent the above perfect forwarding ctor from hijacking (accidental)
423 // attempts at ScopedVclPtrInstance copy construction (where the hijacking
424 // would typically lead to somewhat obscure error messages); both non-const
425 // and const variants are needed here, as the ScopedVclPtr base class has a
426 // const--variant copy ctor, so the implicitly declared copy ctor for
427 // ScopedVclPtrInstance would also be the const variant, so non-const copy
428 // construction attempts would be hijacked by the perfect forwarding ctor;
429 // but if we only declared a non-const variant here, the const variant would
430 // no longer be implicitly declared (as there would already be an explicitly
431 // declared copy ctor), so const copy construction attempts would then be
432 // hijacked by the perfect forwarding ctor:
433 ScopedVclPtrInstance(ScopedVclPtrInstance &) = delete;
434 ScopedVclPtrInstance(ScopedVclPtrInstance const &) = delete;
435};
436#if defined _MSC_VER
437#pragma warning(pop)
438#endif
439
440#endif // INCLUDED_VCL_PTR_HXX
441
442/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/rtl/ref.hxx

→
1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20#ifndef INCLUDED_RTL_REF_HXX
21#define INCLUDED_RTL_REF_HXX
22
23#include "sal/config.h"
24
25#include <cassert>
26#include <cstddef>
27#include <functional>
28#ifdef LIBO_INTERNAL_ONLY1
29#include <type_traits>
30#endif
31
32#include "sal/types.h"
33
34namespace rtl
35{
36
37/** Template reference class for reference type.
38*/
39template <class reference_type>
40class Reference
41{
42 /** The <b>reference_type</b> body pointer.
43 */
44 reference_type * m_pBody;
45
46
47public:
48 /** Constructor...
49 */
50 Reference()
51 : m_pBody (NULL__null)
52 {}
53
54
55 /** Constructor...
56 */
57 Reference (reference_type * pBody, __sal_NoAcquire)
58 : m_pBody (pBody)
59 {
60 }
61
62 /** Constructor...
63 */
64 Reference (reference_type * pBody)
65 : m_pBody (pBody)
66 {
67 if (m_pBody)
68 m_pBody->acquire();
69 }
70
71 /** Copy constructor...
72 */
73 Reference (const Reference<reference_type> & handle)
74 : m_pBody (handle.m_pBody)
75 {
76 if (m_pBody)
77 m_pBody->acquire();
78 }
79
80#ifdef LIBO_INTERNAL_ONLY1
81 /** Move constructor...
82 */
83 Reference (Reference<reference_type> && handle) noexcept
84 : m_pBody (handle.m_pBody)
85 {
86 handle.m_pBody = nullptr;
87 }
88#endif
89
90#if defined LIBO_INTERNAL_ONLY1
91 /** Up-casting conversion constructor: Copies interface reference.
92
93 Does not work for up-casts to ambiguous bases.
94
95 @param rRef another reference
96 */
97 template< class derived_type >
98 inline Reference(
99 const Reference< derived_type > & rRef,
100 std::enable_if_t<std::is_base_of_v<reference_type, derived_type>, int> = 0 )
101 : m_pBody (rRef.get())
102 {
103 if (m_pBody)
104 m_pBody->acquire();
105 }
106#endif
107
108 /** Destructor...
109 */
110 ~Reference() COVERITY_NOEXCEPT_FALSE
111 {
112 if (m_pBody)
113 m_pBody->release();
114 }
115
116 /** Set...
117 Similar to assignment.
118 */
119 Reference<reference_type> &
120 SAL_CALL set (reference_type * pBody)
121 {
122 if (pBody)
123 pBody->acquire();
124 reference_type * const pOld = m_pBody;
125 m_pBody = pBody;
126 if (pOld)
127 pOld->release();
128 return *this;
129 }
130
131 /** Assignment.
132 Unbinds this instance from its body (if bound) and
133 bind it to the body represented by the handle.
134 */
135 Reference<reference_type> &
136 SAL_CALL operator= (const Reference<reference_type> & handle)
137 {
138 return set( handle.m_pBody );
139 }
140
141#ifdef LIBO_INTERNAL_ONLY1
142 /** Assignment.
143 * Unbinds this instance from its body (if bound),
144 * bind it to the body represented by the handle, and
145 * set the body represented by the handle to nullptr.
146 */
147 Reference<reference_type> &
148 operator= (Reference<reference_type> && handle)
149 {
150 // self-movement guts ourself
151 if (m_pBody)
152 m_pBody->release();
153 m_pBody = handle.m_pBody;
154 handle.m_pBody = nullptr;
155 return *this;
156 }
157#endif
158
159 /** Assignment...
160 */
161 Reference<reference_type> &
162 SAL_CALL operator= (reference_type * pBody)
163 {
164 return set( pBody );
165 }
166
167 /** Unbind the body from this handle.
168 Note that for a handle representing a large body,
169 "handle.clear().set(new body());" _might_
170 perform a little bit better than "handle.set(new body());",
171 since in the second case two large objects exist in memory
172 (the old body and the new body).
173 */
174 Reference<reference_type> & SAL_CALL clear()
175 {
176 if (m_pBody
11.1
Field 'm_pBody' is non-null
11.1
Field 'm_pBody' is non-null
11.1
Field 'm_pBody' is non-null
11.1
Field 'm_pBody' is non-null
)
12
←
Taking true branch
→
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
13
←
Calling 'VclReferenceBase::release'
→
17
←
Returning; memory was released
→
181 }
182 return *this;
183 }
184
185
186 /** Get the body. Can be used instead of operator->().
187 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
188 are the same.
189 */
190 reference_type * SAL_CALL get() const
191 {
192 return m_pBody;
20
←
Use of memory after it is freed
193 }
194
195
196 /** Probably most common used: handle->someBodyOp().
197 */
198 reference_type * SAL_CALL operator->() const
199 {
200 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 200, __extension__ __PRETTY_FUNCTION__));
201 return m_pBody;
202 }
203
204
205 /** Allows (*handle).someBodyOp().
206 */
207 reference_type & SAL_CALL operator*() const
208 {
209 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 209, __extension__ __PRETTY_FUNCTION__));
210 return *m_pBody;
211 }
212
213
214 /** Returns True if the handle does point to a valid body.
215 */
216 bool SAL_CALL is() const
217 {
218 return (m_pBody != NULL__null);
219 }
220
221#if defined LIBO_INTERNAL_ONLY1
222 /** Returns True if the handle does point to a valid body.
223 */
224 explicit operator bool() const
225 {
226 return is();
227 }
228#endif
229
230 /** Returns True if this points to pBody.
231 */
232 bool SAL_CALL operator== (const reference_type * pBody) const
233 {
234 return (m_pBody == pBody);
235 }
236
237
238 /** Returns True if handle points to the same body.
239 */
240 bool
241 SAL_CALL operator== (const Reference<reference_type> & handle) const
242 {
243 return (m_pBody == handle.m_pBody);
244 }
245
246
247 /** Needed to place References into STL collection.
248 */
249 bool
250 SAL_CALL operator!= (const Reference<reference_type> & handle) const
251 {
252 return (m_pBody != handle.m_pBody);
253 }
254
255
256 /** Needed to place References into STL collection.
257 */
258 bool
259 SAL_CALL operator< (const Reference<reference_type> & handle) const
260 {
261 return (m_pBody < handle.m_pBody);
262 }
263
264
265 /** Needed to place References into STL collection.
266 */
267 bool
268 SAL_CALL operator> (const Reference<reference_type> & handle) const
269 {
270 return (m_pBody > handle.m_pBody);
271 }
272};
273
274} // namespace rtl
275
276#if defined LIBO_INTERNAL_ONLY1
277namespace std
278{
279
280/// @cond INTERNAL
281/**
282 Make rtl::Reference hashable by default for use in STL containers.
283
284 @since LibreOffice 6.3
285*/
286template<typename T>
287struct hash<::rtl::Reference<T>>
288{
289 std::size_t operator()(::rtl::Reference<T> const & s) const
290 { return std::size_t(s.get()); }
291};
292/// @endcond
293
294}
295
296#endif
297
298#endif /* ! INCLUDED_RTL_REF_HXX */
299
300/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/vcl/vclreferencebase.hxx

1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19#ifndef INCLUDED_VCL_Reference_HXX
20#define INCLUDED_VCL_Reference_HXX
21
22#include <vcl/dllapi.h>
23#include <osl/interlck.h>
24
25class VCL_DLLPUBLIC__attribute__ ((visibility("default"))) VclReferenceBase
26{
27 mutable oslInterlockedCount mnRefCnt;
28
29 template<typename T> friend class VclPtr;
30
31public:
32 void acquire() const
33 {
34 osl_atomic_increment(&mnRefCnt)__sync_add_and_fetch((&mnRefCnt), 1);
35 }
36
37 void release() const
38 {
39 if (osl_atomic_decrement(&mnRefCnt)__sync_sub_and_fetch((&mnRefCnt), 1) == 0)
14
←
Assuming the condition is true
→
15
←
Taking true branch
→
40 delete this;
16
←
Memory is released
→
41 }
42#ifdef DBG_UTIL
43#ifndef _WIN32
44 sal_Int32 getRefCount() const { return mnRefCnt; }
45#endif
46#endif
47
48
49private:
50 VclReferenceBase(const VclReferenceBase&) = delete;
51 VclReferenceBase& operator=(const VclReferenceBase&) = delete;
52
53 bool mbDisposed : 1;
54
55protected:
56 VclReferenceBase();
57protected:
58 virtual ~VclReferenceBase();
59
60protected:
61 virtual void dispose();
62
63public:
64 void disposeOnce();
65 bool isDisposed() const { return mbDisposed; }
66
67};
68#endif