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 ViewTabBar.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 -isystem /usr/include/libxml2 -isystem /usr/include/dbus-1.0 -isystem /usr/lib64/dbus-1.0/include -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 SD_DLLIMPLEMENTATION -D SDUI_DLL_NAME="libsduilo.so" -D SYSTEM_LIBXML -D ENABLE_SDREMOTE -D ENABLE_SDREMOTE_BLUETOOTH -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/external/bluez_bluetooth/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/sd/inc -I /home/maarten/src/libreoffice/core/sd/source/ui/inc -I /home/maarten/src/libreoffice/core/sd/source/ui/slidesorter/inc -I /home/maarten/src/libreoffice/core/workdir/SdiTarget/sd/sdi -I /home/maarten/src/libreoffice/core/workdir/CustomTarget/officecfg/registry -I /home/maarten/src/libreoffice/core/workdir/CustomTarget/oox/generated -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/normal -I /usr/include/glib-2.0 -I /usr/lib64/glib-2.0/include -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/sd/source/ui/view/ViewTabBar.cxx

/home/maarten/src/libreoffice/core/sd/source/ui/view/ViewTabBar.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 <ViewTabBar.hxx>
21
22#include <ViewShellBase.hxx>
23#include <framework/FrameworkHelper.hxx>
24#include <framework/Pane.hxx>
25#include <DrawController.hxx>
26
27#include <Client.hxx>
28#include <vcl/svapp.hxx>
29#include <vcl/tabpage.hxx>
30#include <vcl/settings.hxx>
31
32#include <sfx2/viewfrm.hxx>
33#include <com/sun/star/drawing/framework/ResourceId.hpp>
34#include <com/sun/star/drawing/framework/XControllerManager.hpp>
35#include <com/sun/star/lang/DisposedException.hpp>
36#include <com/sun/star/drawing/framework/XView.hpp>
37#include <comphelper/processfactory.hxx>
38#include <comphelper/servicehelper.hxx>
39#include <tools/diagnose_ex.h>
40
41using namespace ::com::sun::star;
42using namespace ::com::sun::star::uno;
43using namespace ::com::sun::star::drawing::framework;
44using ::sd::framework::FrameworkHelper;
45
46namespace sd {
47
48namespace {
49bool IsEqual (const TabBarButton& rButton1, const TabBarButton& rButton2)
50{
51 return ((rButton1.ResourceId.is()
52 && rButton2.ResourceId.is()
53 && rButton1.ResourceId->compareTo(rButton2.ResourceId) == 0)
54 || rButton1.ButtonLabel == rButton2.ButtonLabel);
55}
56
57class TabBarControl : public ::TabControl
58{
59public:
60 TabBarControl (vcl::Window* pParentWindow, const ::rtl::Reference<ViewTabBar>& rpViewTabBar);
61 virtual void Paint (vcl::RenderContext& rRenderContext, const ::tools::Rectangle& rRect) override;
62 virtual void ActivatePage() override;
63private:
64 ::rtl::Reference<ViewTabBar> mpViewTabBar;
65};
66
67} // end of anonymous namespace
68
69ViewTabBar::ViewTabBar (
70 const Reference<XResourceId>& rxViewTabBarId,
71 const Reference<frame::XController>& rxController)
72 : ViewTabBarInterfaceBase(maMutex),
73 mpTabControl(VclPtr<TabBarControl>::Create(GetAnchorWindow(rxViewTabBarId,rxController), this)),
74 mxController(rxController),
75 maTabBarButtons(),
76 mpTabPage(nullptr),
77 mxViewTabBarId(rxViewTabBarId),
78 mpViewShellBase(nullptr)
79{
80 // Set one new tab page for all tab entries. We need it only to
81 // determine the height of the tab bar.
82 mpTabPage.reset(VclPtr<TabPage>::Create(mpTabControl.get()));
1
Calling 'VclPtr::Create'
→
3
←
Returned allocated memory
→
4
←
Calling implicit destructor for 'VclPtr<TabPage>'
→
5
←
Calling '~Reference'
→
12
←
Returning from '~Reference'
→
13
←
Returning from destructor for 'VclPtr<TabPage>'
→
83 mpTabPage->Hide();
14
←
Calling 'VclPtr::operator->'
→
84
85 // add some space before the tabitems
86 mpTabControl->SetItemsOffset(Point(5, 3));
87
88 // Tunnel through the controller and use the ViewShellBase to obtain the
89 // view frame.
90 try
91 {
92 Reference<lang::XUnoTunnel> xTunnel (mxController, UNO_QUERY_THROW);
93 DrawController* pController = reinterpret_cast<DrawController*>(
94 xTunnel->getSomething(DrawController::getUnoTunnelId()));
95 mpViewShellBase = pController->GetViewShellBase();
96 }
97 catch (const RuntimeException&)
98 {
99 }
100
101 // Register as listener at XConfigurationController.
102 Reference<XControllerManager> xControllerManager (mxController, UNO_QUERY);
103 if (xControllerManager.is())
104 {
105 mxConfigurationController = xControllerManager->getConfigurationController();
106 if (mxConfigurationController.is())
107 {
108 mxConfigurationController->addConfigurationChangeListener(
109 this,
110 FrameworkHelper::msResourceActivationEvent,
111 Any());
112 }
113 }
114
115 mpTabControl->Show();
116
117 if (mpViewShellBase != nullptr
118 && rxViewTabBarId->isBoundToURL(
119 FrameworkHelper::msCenterPaneURL, AnchorBindingMode_DIRECT))
120 {
121 mpViewShellBase->SetViewTabBar(this);
122 }
123}
124
125ViewTabBar::~ViewTabBar()
126{
127}
128
129void ViewTabBar::disposing()
130{
131 if (mpViewShellBase != nullptr
132 && mxViewTabBarId->isBoundToURL(
133 FrameworkHelper::msCenterPaneURL, AnchorBindingMode_DIRECT))
134 {
135 mpViewShellBase->SetViewTabBar(nullptr);
136 }
137
138 if (mxConfigurationController.is())
139 {
140 // Unregister listener from XConfigurationController.
141 try
142 {
143 mxConfigurationController->removeConfigurationChangeListener(this);
144 }
145 catch (const lang::DisposedException&)
146 {
147 // Receiving a disposed exception is the normal case. Is there
148 // a way to avoid it?
149 }
150 mxConfigurationController = nullptr;
151 }
152
153 {
154 const SolarMutexGuard aSolarGuard;
155 // Set all references to the one tab page to NULL and delete the page.
156 for (sal_uInt16 nIndex=0; nIndex<mpTabControl->GetPageCount(); ++nIndex)
157 mpTabControl->SetTabPage(nIndex, nullptr);
158 mpTabPage.disposeAndClear();
159 mpTabControl.disposeAndClear();
160 }
161
162 mxController = nullptr;
163}
164
165vcl::Window* ViewTabBar::GetAnchorWindow(
166 const Reference<XResourceId>& rxViewTabBarId,
167 const Reference<frame::XController>& rxController)
168{
169 vcl::Window* pWindow = nullptr;
170 ViewShellBase* pBase = nullptr;
171
172 // Tunnel through the controller and use the ViewShellBase to obtain the
173 // view frame.
174 try
175 {
176 Reference<lang::XUnoTunnel> xTunnel (rxController, UNO_QUERY_THROW);
177 DrawController* pController = reinterpret_cast<DrawController*>(
178 xTunnel->getSomething(DrawController::getUnoTunnelId()));
179 pBase = pController->GetViewShellBase();
180 }
181 catch (const RuntimeException&)
182 {
183 }
184
185 // The ViewTabBar supports at the moment only the center pane.
186 if (rxViewTabBarId.is()
187 && rxViewTabBarId->isBoundToURL(
188 FrameworkHelper::msCenterPaneURL, AnchorBindingMode_DIRECT))
189 {
190 if (pBase != nullptr && pBase->GetViewFrame() != nullptr)
191 pWindow = &pBase->GetViewFrame()->GetWindow();
192 }
193
194 // The rest is (at the moment) just for the emergency case.
195 if (pWindow == nullptr)
196 {
197 Reference<XPane> xPane;
198 try
199 {
200 Reference<XControllerManager> xControllerManager (rxController, UNO_QUERY_THROW);
201 Reference<XConfigurationController> xCC (
202 xControllerManager->getConfigurationController());
203 if (xCC.is())
204 xPane.set(xCC->getResource(rxViewTabBarId->getAnchor()), UNO_QUERY);
205 }
206 catch (const RuntimeException&)
207 {
208 }
209
210 // Tunnel through the XWindow to the VCL side.
211 try
212 {
213 Reference<lang::XUnoTunnel> xTunnel (xPane, UNO_QUERY_THROW);
214 framework::Pane* pPane = reinterpret_cast<framework::Pane*>(
215 xTunnel->getSomething(framework::Pane::getUnoTunnelId()));
216 if (pPane != nullptr)
217 pWindow = pPane->GetWindow()->GetParent();
218 }
219 catch (const RuntimeException&)
220 {
221 }
222 }
223
224 return pWindow;
225}
226
227//----- XConfigurationChangeListener ------------------------------------------
228
229void SAL_CALL ViewTabBar::notifyConfigurationChange (
230 const ConfigurationChangeEvent& rEvent)
231{
232 if (rEvent.Type == FrameworkHelper::msResourceActivationEvent
233 && rEvent.ResourceId->getResourceURL().match(FrameworkHelper::msViewURLPrefix)
234 && rEvent.ResourceId->isBoundTo(mxViewTabBarId->getAnchor(), AnchorBindingMode_DIRECT))
235 {
236 UpdateActiveButton();
237 }
238}
239
240//----- XEventListener --------------------------------------------------------
241
242void SAL_CALL ViewTabBar::disposing(
243 const lang::EventObject& rEvent)
244{
245 if (rEvent.Source == mxConfigurationController)
246 {
247 mxConfigurationController = nullptr;
248 mxController = nullptr;
249 }
250}
251
252//----- XTabBar ---------------------------------------------------------------
253
254void SAL_CALL ViewTabBar::addTabBarButtonAfter (
255 const TabBarButton& rButton,
256 const TabBarButton& rAnchor)
257{
258 const SolarMutexGuard aSolarGuard;
259 AddTabBarButton(rButton, rAnchor);
260}
261
262void SAL_CALL ViewTabBar::appendTabBarButton (const TabBarButton& rButton)
263{
264 const SolarMutexGuard aSolarGuard;
265 AddTabBarButton(rButton);
266}
267
268void SAL_CALL ViewTabBar::removeTabBarButton (const TabBarButton& rButton)
269{
270 const SolarMutexGuard aSolarGuard;
271 RemoveTabBarButton(rButton);
272}
273
274sal_Bool SAL_CALL ViewTabBar::hasTabBarButton (const TabBarButton& rButton)
275{
276 const SolarMutexGuard aSolarGuard;
277 return HasTabBarButton(rButton);
278}
279
280Sequence<TabBarButton> SAL_CALL ViewTabBar::getTabBarButtons()
281{
282 const SolarMutexGuard aSolarGuard;
283 return GetTabBarButtons();
284}
285
286//----- XResource -------------------------------------------------------------
287
288Reference<XResourceId> SAL_CALL ViewTabBar::getResourceId()
289{
290 return mxViewTabBarId;
291}
292
293sal_Bool SAL_CALL ViewTabBar::isAnchorOnly()
294{
295 return false;
296}
297
298//----- XUnoTunnel ------------------------------------------------------------
299
300namespace
301{
302 class theViewTabBarUnoTunnelId : public rtl::Static< UnoTunnelIdInit, theViewTabBarUnoTunnelId > {};
303}
304
305const Sequence<sal_Int8>& ViewTabBar::getUnoTunnelId()
306{
307 return theViewTabBarUnoTunnelId::get().getSeq();
308}
309
310sal_Int64 SAL_CALL ViewTabBar::getSomething (const Sequence<sal_Int8>& rId)
311{
312 sal_Int64 nResult = 0;
313
314 if (isUnoTunnelId<ViewTabBar>(rId))
315 {
316 nResult = reinterpret_cast<sal_Int64>(this);
317 }
318
319 return nResult;
320}
321
322bool ViewTabBar::ActivatePage()
323{
324 try
325 {
326 Reference<XControllerManager> xControllerManager (mxController,UNO_QUERY_THROW);
327 Reference<XConfigurationController> xConfigurationController (
328 xControllerManager->getConfigurationController());
329 if ( ! xConfigurationController.is())
330 throw RuntimeException();
331 Reference<XView> xView;
332 try
333 {
334 xView.set(xConfigurationController->getResource(
335 ResourceId::create(
336 ::comphelper::getProcessComponentContext(),
337 FrameworkHelper::msCenterPaneURL)),
338 UNO_QUERY);
339 }
340 catch (const DeploymentException&)
341 {
342 }
343
344 Client* pIPClient = nullptr;
345 if (mpViewShellBase != nullptr)
346 pIPClient = dynamic_cast<Client*>(mpViewShellBase->GetIPClient());
347 if (pIPClient==nullptr || ! pIPClient->IsObjectInPlaceActive())
348 {
349 sal_uInt16 nIndex (mpTabControl->GetCurPageId() - 1);
350 if (nIndex < maTabBarButtons.size())
351 {
352 xConfigurationController->requestResourceActivation(
353 maTabBarButtons[nIndex].ResourceId,
354 ResourceActivationMode_REPLACE);
355 }
356
357 return true;
358 }
359 else
360 {
361 // When we run into this else branch then we have an active OLE
362 // object. We ignore the request to switch views. Additionally
363 // we put the active tab back to the one for the current view.
364 UpdateActiveButton();
365 }
366 }
367 catch (const RuntimeException&)
368 {
369 DBG_UNHANDLED_EXCEPTION("sd.view")DbgUnhandledException( DbgGetCaughtException(), __func__, "/home/maarten/src/libreoffice/core/sd/source/ui/view/ViewTabBar.cxx"
":" "369" ": ", "sd.view" );;
370 }
371
372 return false;
373}
374
375int ViewTabBar::GetHeight() const
376{
377 int nHeight (0);
378
379 if (!maTabBarButtons.empty())
380 {
381 TabPage* pActivePage (mpTabControl->GetTabPage(
382 mpTabControl->GetCurPageId()));
383 if (pActivePage!=nullptr && mpTabControl->IsReallyVisible())
384 nHeight = pActivePage->GetPosPixel().Y();
385
386 if (nHeight <= 0)
387 // Using a default when the real height can not be determined.
388 // To get correct height this method should be called when the
389 // control is visible.
390 nHeight = 21;
391 }
392
393 return nHeight;
394}
395
396void ViewTabBar::AddTabBarButton (
397 const css::drawing::framework::TabBarButton& rButton,
398 const css::drawing::framework::TabBarButton& rAnchor)
399{
400 TabBarButtonList::size_type nIndex;
401
402 if ( ! rAnchor.ResourceId.is()
403 || (rAnchor.ResourceId->getResourceURL().isEmpty()
404 && rAnchor.ButtonLabel.isEmpty()))
405 {
406 nIndex = 0;
407 }
408 else
409 {
410 for (nIndex=0; nIndex<maTabBarButtons.size(); ++nIndex)
411 {
412 if (IsEqual(maTabBarButtons[nIndex], rAnchor))
413 {
414 ++nIndex;
415 break;
416 }
417 }
418 }
419
420 AddTabBarButton(rButton,nIndex);
421}
422
423void ViewTabBar::AddTabBarButton (
424 const css::drawing::framework::TabBarButton& rButton)
425{
426 AddTabBarButton(rButton, maTabBarButtons.size());
427}
428
429void ViewTabBar::AddTabBarButton (
430 const css::drawing::framework::TabBarButton& rButton,
431 sal_Int32 nPosition)
432{
433 if (nPosition>=0
434 && nPosition<=mpTabControl->GetPageCount())
435 {
436 sal_uInt16 nIndex (static_cast<sal_uInt16>(nPosition));
437
438 // Insert the button into our local array.
439 maTabBarButtons.insert(maTabBarButtons.begin()+nIndex, rButton);
440 UpdateTabBarButtons();
441 UpdateActiveButton();
442 }
443}
444
445void ViewTabBar::RemoveTabBarButton (
446 const css::drawing::framework::TabBarButton& rButton)
447{
448 for (TabBarButtonList::size_type nIndex=0; nIndex<maTabBarButtons.size(); ++nIndex)
449 {
450 if (IsEqual(maTabBarButtons[nIndex], rButton))
451 {
452 maTabBarButtons.erase(maTabBarButtons.begin()+nIndex);
453 UpdateTabBarButtons();
454 UpdateActiveButton();
455 break;
456 }
457 }
458}
459
460bool ViewTabBar::HasTabBarButton (
461 const css::drawing::framework::TabBarButton& rButton)
462{
463 bool bResult (false);
464
465 for (const css::drawing::framework::TabBarButton & r : maTabBarButtons)
466 {
467 if (IsEqual(r, rButton))
468 {
469 bResult = true;
470 break;
471 }
472 }
473
474 return bResult;
475}
476
477css::uno::Sequence<css::drawing::framework::TabBarButton>
478 ViewTabBar::GetTabBarButtons()
479{
480 sal_uInt32 nCount (maTabBarButtons.size());
481 css::uno::Sequence<css::drawing::framework::TabBarButton>
482 aList (nCount);
483
484 for (sal_uInt32 nIndex=0; nIndex<nCount; ++nIndex)
485 aList[nIndex] = maTabBarButtons[nIndex];
486
487 return aList;
488}
489
490void ViewTabBar::UpdateActiveButton()
491{
492 Reference<XView> xView;
493 if (mpViewShellBase != nullptr)
494 xView = FrameworkHelper::Instance(*mpViewShellBase)->GetView(
495 mxViewTabBarId->getAnchor());
496 if (!xView.is())
497 return;
498
499 Reference<XResourceId> xViewId (xView->getResourceId());
500 for (size_t nIndex=0; nIndex<maTabBarButtons.size(); ++nIndex)
501 {
502 if (maTabBarButtons[nIndex].ResourceId->compareTo(xViewId) == 0)
503 {
504 mpTabControl->SetCurPageId(nIndex+1);
505 mpTabControl->::TabControl::ActivatePage();
506 break;
507 }
508 }
509}
510
511void ViewTabBar::UpdateTabBarButtons()
512{
513 sal_uInt16 nPageCount (mpTabControl->GetPageCount());
514 sal_uInt16 nIndex = 1;
515 for (const auto& rTab : maTabBarButtons)
516 {
517 // Create a new tab when there are not enough.
518 if (nPageCount < nIndex)
519 mpTabControl->InsertPage(nIndex, rTab.ButtonLabel);
520
521 // Update the tab.
522 mpTabControl->SetPageText(nIndex, rTab.ButtonLabel);
523 mpTabControl->SetHelpText(nIndex, rTab.HelpText);
524 mpTabControl->SetTabPage(nIndex, mpTabPage.get());
525
526 ++nIndex;
527 }
528
529 // Delete tabs that are no longer used.
530 for (; nIndex<=nPageCount; ++nIndex)
531 mpTabControl->RemovePage(nIndex);
532
533 mpTabPage->Hide();
534}
535
536//===== TabBarControl =========================================================
537
538TabBarControl::TabBarControl (
539 vcl::Window* pParentWindow,
540 const ::rtl::Reference<ViewTabBar>& rpViewTabBar)
541 : ::TabControl(pParentWindow),
542 mpViewTabBar(rpViewTabBar)
543{
544}
545
546void TabBarControl::Paint (vcl::RenderContext& rRenderContext, const ::tools::Rectangle& rRect)
547{
548 Color aOriginalFillColor(rRenderContext.GetFillColor());
549 Color aOriginalLineColor(rRenderContext.GetLineColor());
550
551 // Because the actual window background is transparent--to avoid
552 // flickering due to multiple background paintings by this and by child
553 // windows--we have to paint the background for this control explicitly:
554 // the actual control is not painted over its whole bounding box.
555 rRenderContext.SetFillColor(rRenderContext.GetSettings().GetStyleSettings().GetDialogColor());
556 rRenderContext.SetLineColor();
557 rRenderContext.DrawRect(rRect);
558
559 ::TabControl::Paint(rRenderContext, rRect);
560
561 rRenderContext.SetFillColor(aOriginalFillColor);
562 rRenderContext.SetLineColor(aOriginalLineColor);
563}
564
565void TabBarControl::ActivatePage()
566{
567 if (mpViewTabBar->ActivatePage())
568 {
569 // Call the parent so that the correct tab is highlighted.
570 this->::TabControl::ActivatePage();
571 }
572}
573
574} // end of namespace sd
575
576/* 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 );
2
←
Memory is allocated
→
130 }
131
132 /** Probably most common used: handle->someBodyOp().
133 */
134 reference_type * operator->() const
135 {
136 return m_rInnerRef.get();
15
←
Calling 'Reference::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 ;-)
205 if (aTmp.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();
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 )
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
5.1
Field 'm_pBody' is non-null
5.1
Field 'm_pBody' is non-null
5.1
Field 'm_pBody' is non-null
5.1
Field 'm_pBody' is non-null
)
6
←
Taking true branch
→
113 m_pBody->release();
7
←
Calling 'VclReferenceBase::release'
→
11
←
Returning; memory was released
→
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)
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
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;
16
←
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)
8
←
Assuming the condition is true
→
9
←
Taking true branch
→
40 delete this;
10
←
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