Bug Summary

File:home/maarten/src/libreoffice/core/vcl/source/window/scrwnd.cxx
Warning:line 385, column 10
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 scrwnd.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 /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/glm -isystem /usr/include/glib-2.0 -isystem /usr/lib64/glib-2.0/include -isystem /usr/include/libmount -isystem /usr/include/blkid -isystem /usr/include/cairo -isystem /usr/include/glib-2.0 -isystem /usr/lib64/glib-2.0/include -isystem /usr/include/pixman-1 -isystem /usr/include/freetype2 -isystem /usr/include/libpng16 -isystem /usr/include/libxml2 -isystem /usr/include/freetype2 -isystem /usr/include/libpng16 -isystem /usr/include/dbus-1.0 -isystem /usr/lib64/dbus-1.0/include -isystem /usr/include/freetype2 -isystem /usr/include/libpng16 -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 VCL_DLLIMPLEMENTATION -D DLLIMPLEMENTATION_UITEST -D CUI_DLL_NAME="libcuilo.so" -D DESKTOP_DETECTOR_DLL_NAME="libdesktop_detectorlo.so" -D TK_DLL_NAME="libtklo.so" -D SYSTEM_ZLIB -D GLM_FORCE_CTOR_INIT -D SK_USER_CONFIG_HEADER=</home/maarten/src/libreoffice/core/config_host/config_skia.h> -D SKIA_DLL -D ENABLE_CUPS -D HAVE_VALGRIND_HEADERS -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/epoxy/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/skia/include/core -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/skia/include/effects -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/skia/include/gpu -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/skia/include/config -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/skia/include/ports -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/skia/include/third_party/vulkan -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/skia/tools/gpu -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/skia -I /home/maarten/src/libreoffice/core/external/skia/inc/ -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/mdds/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/lcms2/include -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/workdir/UnpackedTarball/harfbuzz/src -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/graphite/include -I /home/maarten/src/libreoffice/core/external/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/pdfium -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/pdfium/public -D COMPONENT_BUILD -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/libpng -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/libjpeg-turbo -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/vcl/inc -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 -I /usr/include/freetype2 -I /usr/include/libpng16 -I /usr/include/libxml2 -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/vcl/source/window/scrwnd.cxx

/home/maarten/src/libreoffice/core/vcl/source/window/scrwnd.cxx

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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 <limits.h>
21
22#include <o3tl/float_int_conversion.hxx>
23#include <tools/time.hxx>
24
25#include <bitmaps.hlst>
26#include <svdata.hxx>
27#include <scrwnd.hxx>
28
29#include <vcl/timer.hxx>
30#include <vcl/commandevent.hxx>
31#include <vcl/event.hxx>
32#include <vcl/ptrstyle.hxx>
33#include <sal/log.hxx>
34
35#include <math.h>
36
37#define WHEEL_WIDTH25 25
38#define WHEEL_RADIUS((25) >> 1 ) ((WHEEL_WIDTH25) >> 1 )
39#define MAX_TIME300 300
40#define MIN_TIME20 20
41#define DEF_TIMEOUT50 50
42
43ImplWheelWindow::ImplWheelWindow( vcl::Window* pParent ) :
44 FloatingWindow ( pParent, 0 ),
45 mnRepaintTime ( 1 ),
46 mnTimeout ( DEF_TIMEOUT50 ),
47 mnWheelMode ( WheelMode::NONE ),
48 mnActDist ( 0 ),
49 mnActDeltaX ( 0 ),
50 mnActDeltaY ( 0 )
51{
52 // we need a parent
53 SAL_WARN_IF( !pParent, "vcl", "ImplWheelWindow::ImplWheelWindow(): Parent not set!" )do { if (true && (!pParent)) { switch (sal_detail_log_report
(::SAL_DETAIL_LOG_LEVEL_WARN, "vcl")) { case SAL_DETAIL_LOG_ACTION_IGNORE
: break; case SAL_DETAIL_LOG_ACTION_LOG: if (sizeof ::sal::detail
::getResult( ::sal::detail::StreamStart() << "ImplWheelWindow::ImplWheelWindow(): Parent not set!"
) == 1) { ::sal_detail_log( (::SAL_DETAIL_LOG_LEVEL_WARN), ("vcl"
), ("/home/maarten/src/libreoffice/core/vcl/source/window/scrwnd.cxx"
":" "53" ": "), ::sal::detail::unwrapStream( ::sal::detail::
StreamStart() << "ImplWheelWindow::ImplWheelWindow(): Parent not set!"
), 0); } else { ::std::ostringstream sal_detail_stream; sal_detail_stream
<< "ImplWheelWindow::ImplWheelWindow(): Parent not set!"
; ::sal::detail::log( (::SAL_DETAIL_LOG_LEVEL_WARN), ("vcl"),
("/home/maarten/src/libreoffice/core/vcl/source/window/scrwnd.cxx"
":" "53" ": "), sal_detail_stream, 0); }; break; case SAL_DETAIL_LOG_ACTION_FATAL
: if (sizeof ::sal::detail::getResult( ::sal::detail::StreamStart
() << "ImplWheelWindow::ImplWheelWindow(): Parent not set!"
) == 1) { ::sal_detail_log( (::SAL_DETAIL_LOG_LEVEL_WARN), ("vcl"
), ("/home/maarten/src/libreoffice/core/vcl/source/window/scrwnd.cxx"
":" "53" ": "), ::sal::detail::unwrapStream( ::sal::detail::
StreamStart() << "ImplWheelWindow::ImplWheelWindow(): Parent not set!"
), 0); } else { ::std::ostringstream sal_detail_stream; sal_detail_stream
<< "ImplWheelWindow::ImplWheelWindow(): Parent not set!"
; ::sal::detail::log( (::SAL_DETAIL_LOG_LEVEL_WARN), ("vcl"),
("/home/maarten/src/libreoffice/core/vcl/source/window/scrwnd.cxx"
":" "53" ": "), sal_detail_stream, 0); }; std::abort(); break
; } } } while (false);
54
55 const Size aSize( pParent->GetOutputSizePixel() );
56 const StartAutoScrollFlags nFlags = ImplGetSVData()->mpWinData->mnAutoScrollFlags;
57 const bool bHorz( nFlags & StartAutoScrollFlags::Horz );
58 const bool bVert( nFlags & StartAutoScrollFlags::Vert );
59
60 // calculate maximum speed distance
61 mnMaxWidth = static_cast<sal_uLong>( 0.4 * hypot( static_cast<double>(aSize.Width()), aSize.Height() ) );
62
63 // create wheel window
64 SetTitleType( FloatWinTitleType::NONE );
65 ImplCreateImageList();
66 BitmapEx aBmp(SV_RESID_BITMAP_SCROLLMSK"vcl/res/scrmsk.png");
67 ImplSetRegion(aBmp.GetBitmap());
68
69 // set wheel mode
70 if( bHorz && bVert )
71 ImplSetWheelMode( WheelMode::VH );
72 else if( bHorz )
73 ImplSetWheelMode( WheelMode::H );
74 else
75 ImplSetWheelMode( WheelMode::V );
76
77 // init timer
78 mpTimer.reset(new Timer("WheelWindowTimer"));
79 mpTimer->SetInvokeHandler( LINK( this, ImplWheelWindow, ImplScrollHdl )::tools::detail::makeLink( ::tools::detail::castTo<ImplWheelWindow
*>(this), &ImplWheelWindow::LinkStubImplScrollHdl) );
80 mpTimer->SetTimeout( mnTimeout );
81 mpTimer->Start();
82
83 CaptureMouse();
84}
85
86ImplWheelWindow::~ImplWheelWindow()
87{
88 disposeOnce();
89}
90
91void ImplWheelWindow::dispose()
92{
93 ImplStop();
94 mpTimer.reset();
95 FloatingWindow::dispose();
96}
97
98void ImplWheelWindow::ImplStop()
99{
100 ReleaseMouse();
101 mpTimer->Stop();
102 Show(false);
103}
104
105void ImplWheelWindow::ImplSetRegion( const Bitmap& rRegionBmp )
106{
107 Point aPos( GetPointerPosPixel() );
108 const Size aSize( rRegionBmp.GetSizePixel() );
109 const tools::Rectangle aRect( Point(), aSize );
110
111 maCenter = maLastMousePos = aPos;
112 aPos.AdjustX( -(aSize.Width() >> 1) );
113 aPos.AdjustY( -(aSize.Height() >> 1) );
114
115 SetPosSizePixel( aPos, aSize );
116 SetWindowRegionPixel( rRegionBmp.CreateRegion( COL_BLACK, aRect ) );
117}
118
119void ImplWheelWindow::ImplCreateImageList()
120{
121 maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_SCROLLVH"vcl/res/scrollvh.png"));
122 maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_SCROLLV"vcl/res/scrollv.png"));
123 maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_SCROLLH"vcl/res/scrollh.png"));
124 maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_WHEELVH"vcl/res/wheelvh.png"));
125 maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_WHEELV"vcl/res/wheelv.png"));
126 maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_WHEELH"vcl/res/wheelh.png"));
127}
128
129void ImplWheelWindow::ImplSetWheelMode( WheelMode nWheelMode )
130{
131 if( nWheelMode == mnWheelMode )
132 return;
133
134 mnWheelMode = nWheelMode;
135
136 if( WheelMode::NONE == mnWheelMode )
137 {
138 if( IsVisible() )
139 Hide();
140 }
141 else
142 {
143 if( !IsVisible() )
144 Show();
145
146 Invalidate();
147 }
148}
149
150void ImplWheelWindow::ImplDrawWheel(vcl::RenderContext& rRenderContext)
151{
152 int nIndex;
153
154 switch (mnWheelMode)
155 {
156 case WheelMode::VH:
157 nIndex = 0;
158 break;
159 case WheelMode::V:
160 nIndex = 1;
161 break;
162 case WheelMode::H:
163 nIndex = 2;
164 break;
165 case WheelMode::ScrollVH:
166 nIndex = 3;
167 break;
168 case WheelMode::ScrollV:
169 nIndex = 4;
170 break;
171 case WheelMode::ScrollH:
172 nIndex = 5;
173 break;
174 default:
175 nIndex = -1;
176 break;
177 }
178
179 if (nIndex >= 0)
180 rRenderContext.DrawImage(Point(), maImgList[nIndex]);
181}
182
183void ImplWheelWindow::ImplRecalcScrollValues()
184{
185 if( mnActDist < WHEEL_RADIUS((25) >> 1 ) )
186 {
187 mnActDeltaX = mnActDeltaY = 0;
188 mnTimeout = DEF_TIMEOUT50;
189 }
190 else
191 {
192 sal_uInt64 nCurTime;
193
194 // calc current time
195 if( mnMaxWidth )
196 {
197 const double fExp = ( static_cast<double>(mnActDist) / mnMaxWidth ) * log10( double(MAX_TIME300) / MIN_TIME20 );
198 nCurTime = static_cast<sal_uInt64>( MAX_TIME300 / pow( 10., fExp ) );
199 }
200 else
201 nCurTime = MAX_TIME300;
202
203 if( !nCurTime )
204 nCurTime = 1;
205
206 if( mnRepaintTime <= nCurTime )
207 mnTimeout = nCurTime - mnRepaintTime;
208 else
209 {
210 sal_uInt64 nMult = mnRepaintTime / nCurTime;
211
212 if( !( mnRepaintTime % nCurTime ) )
213 mnTimeout = 0;
214 else
215 mnTimeout = ++nMult * nCurTime - mnRepaintTime;
216
217 double fValX = static_cast<double>(mnActDeltaX) * nMult;
218 double fValY = static_cast<double>(mnActDeltaY) * nMult;
219
220 if( !o3tl::convertsToAtMost(fValX, LONG_MAX9223372036854775807L) )
221 mnActDeltaX = LONG_MAX9223372036854775807L;
222 else if( !o3tl::convertsToAtLeast(fValX, LONG_MIN(-9223372036854775807L -1L)) )
223 mnActDeltaX = LONG_MIN(-9223372036854775807L -1L);
224 else
225 mnActDeltaX = static_cast<long>(fValX);
226
227 if( !o3tl::convertsToAtMost(fValY, LONG_MAX9223372036854775807L) )
228 mnActDeltaY = LONG_MAX9223372036854775807L;
229 else if( !o3tl::convertsToAtLeast(fValY, LONG_MIN(-9223372036854775807L -1L)) )
230 mnActDeltaY = LONG_MIN(-9223372036854775807L -1L);
231 else
232 mnActDeltaY = static_cast<long>(fValY);
233 }
234 }
235}
236
237PointerStyle ImplWheelWindow::ImplGetMousePointer( long nDistX, long nDistY )
238{
239 PointerStyle eStyle;
240 const StartAutoScrollFlags nFlags = ImplGetSVData()->mpWinData->mnAutoScrollFlags;
241 const bool bHorz( nFlags & StartAutoScrollFlags::Horz );
242 const bool bVert( nFlags & StartAutoScrollFlags::Vert );
243
244 if( bHorz || bVert )
245 {
246 if( mnActDist < WHEEL_RADIUS((25) >> 1 ) )
247 {
248 if( bHorz && bVert )
249 eStyle = PointerStyle::AutoScrollNSWE;
250 else if( bHorz )
251 eStyle = PointerStyle::AutoScrollWE;
252 else
253 eStyle = PointerStyle::AutoScrollNS;
254 }
255 else
256 {
257 double fAngle = basegfx::rad2deg(atan2(static_cast<double>(-nDistY), nDistX));
258
259 if( fAngle < 0.0 )
260 fAngle += 360.;
261
262 if( bHorz && bVert )
263 {
264 if( fAngle >= 22.5 && fAngle <= 67.5 )
265 eStyle = PointerStyle::AutoScrollNE;
266 else if( fAngle >= 67.5 && fAngle <= 112.5 )
267 eStyle = PointerStyle::AutoScrollN;
268 else if( fAngle >= 112.5 && fAngle <= 157.5 )
269 eStyle = PointerStyle::AutoScrollNW;
270 else if( fAngle >= 157.5 && fAngle <= 202.5 )
271 eStyle = PointerStyle::AutoScrollW;
272 else if( fAngle >= 202.5 && fAngle <= 247.5 )
273 eStyle = PointerStyle::AutoScrollSW;
274 else if( fAngle >= 247.5 && fAngle <= 292.5 )
275 eStyle = PointerStyle::AutoScrollS;
276 else if( fAngle >= 292.5 && fAngle <= 337.5 )
277 eStyle = PointerStyle::AutoScrollSE;
278 else
279 eStyle = PointerStyle::AutoScrollE;
280 }
281 else if( bHorz )
282 {
283 if( fAngle >= 270. || fAngle <= 90. )
284 eStyle = PointerStyle::AutoScrollE;
285 else
286 eStyle = PointerStyle::AutoScrollW;
287 }
288 else
289 {
290 if( fAngle >= 0. && fAngle <= 180. )
291 eStyle = PointerStyle::AutoScrollN;
292 else
293 eStyle = PointerStyle::AutoScrollS;
294 }
295 }
296 }
297 else
298 eStyle = PointerStyle::Arrow;
299
300 return eStyle;
301}
302
303void ImplWheelWindow::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle&)
304{
305 ImplDrawWheel(rRenderContext);
306}
307
308void ImplWheelWindow::MouseMove( const MouseEvent& rMEvt )
309{
310 FloatingWindow::MouseMove( rMEvt );
311
312 const Point aMousePos( OutputToScreenPixel( rMEvt.GetPosPixel() ) );
313 const long nDistX = aMousePos.X() - maCenter.X();
314 const long nDistY = aMousePos.Y() - maCenter.Y();
315
316 mnActDist = static_cast<sal_uLong>(hypot( static_cast<double>(nDistX), nDistY ));
317
318 const PointerStyle eActStyle = ImplGetMousePointer( nDistX, nDistY );
319 const StartAutoScrollFlags nFlags = ImplGetSVData()->mpWinData->mnAutoScrollFlags;
320 const bool bHorz( nFlags & StartAutoScrollFlags::Horz );
321 const bool bVert( nFlags & StartAutoScrollFlags::Vert );
322 const bool bOuter = mnActDist > WHEEL_RADIUS((25) >> 1 );
323
324 if( bOuter && ( maLastMousePos != aMousePos ) )
325 {
326 switch( eActStyle )
327 {
328 case PointerStyle::AutoScrollN: mnActDeltaX = +0; mnActDeltaY = +1; break;
329 case PointerStyle::AutoScrollS: mnActDeltaX = +0; mnActDeltaY = -1; break;
330 case PointerStyle::AutoScrollW: mnActDeltaX = +1; mnActDeltaY = +0; break;
331 case PointerStyle::AutoScrollE: mnActDeltaX = -1; mnActDeltaY = +0; break;
332 case PointerStyle::AutoScrollNW: mnActDeltaX = +1; mnActDeltaY = +1; break;
333 case PointerStyle::AutoScrollNE: mnActDeltaX = -1; mnActDeltaY = +1; break;
334 case PointerStyle::AutoScrollSW: mnActDeltaX = +1; mnActDeltaY = -1; break;
335 case PointerStyle::AutoScrollSE: mnActDeltaX = -1; mnActDeltaY = -1; break;
336
337 default:
338 break;
339 }
340 }
341
342 ImplRecalcScrollValues();
343 maLastMousePos = aMousePos;
344 SetPointer( eActStyle );
345
346 if( bHorz && bVert )
347 ImplSetWheelMode( bOuter ? WheelMode::ScrollVH : WheelMode::VH );
348 else if( bHorz )
349 ImplSetWheelMode( bOuter ? WheelMode::ScrollH : WheelMode::H );
350 else
351 ImplSetWheelMode( bOuter ? WheelMode::ScrollV : WheelMode::V );
352}
353
354void ImplWheelWindow::MouseButtonUp( const MouseEvent& rMEvt )
355{
356 if( mnActDist > WHEEL_RADIUS((25) >> 1 ) )
357 GetParent()->EndAutoScroll();
358 else
359 FloatingWindow::MouseButtonUp( rMEvt );
360}
361
362IMPL_LINK_NOARG(ImplWheelWindow, ImplScrollHdl, Timer *, void)void ImplWheelWindow::LinkStubImplScrollHdl(void * instance, Timer
* data) { return static_cast<ImplWheelWindow *>(instance
)->ImplScrollHdl(data); } void ImplWheelWindow::ImplScrollHdl
(__attribute__ ((unused)) Timer *)
1
Calling 'ImplWheelWindow::ImplScrollHdl'
→
363{
364 if ( mnActDeltaX || mnActDeltaY )
2
←
Assuming field 'mnActDeltaX' is not equal to 0
→
365 {
366 vcl::Window* pWindow = GetParent();
367 const Point aMousePos( pWindow->OutputToScreenPixel( pWindow->GetPointerPosPixel() ) );
368 Point aCmdMousePos( pWindow->ImplFrameToOutput( aMousePos ) );
369 CommandScrollData aScrollData( mnActDeltaX, mnActDeltaY );
370 CommandEvent aCEvt( aCmdMousePos, CommandEventId::AutoScroll, true, &aScrollData );
371 NotifyEvent aNCmdEvt( MouseNotifyEvent::COMMAND, pWindow, &aCEvt );
372
373 if ( !ImplCallPreNotify( aNCmdEvt ) )
3
←
Assuming the condition is true
→
4
←
Taking true branch
→
374 {
375 const sal_uInt64 nTime = tools::Time::GetSystemTicks();
376 VclPtr<ImplWheelWindow> xWin(this);
377 pWindow->Command( aCEvt );
378 if( xWin->IsDisposed() )
5
←
Assuming the condition is false
→
6
←
Taking false branch
→
379 return;
380 mnRepaintTime = std::max( tools::Time::GetSystemTicks() - nTime, sal_uInt64(1) );
381 ImplRecalcScrollValues();
382 }
7
←
Calling implicit destructor for 'VclPtr<ImplWheelWindow>'
→
8
←
Calling '~Reference'
→
15
←
Returning from '~Reference'
→
16
←
Returning from destructor for 'VclPtr<ImplWheelWindow>'
→
383 }
384
385 if ( mnTimeout != mpTimer->GetTimeout() )
17
←
Use of memory after it is freed
386 mpTimer->SetTimeout( mnTimeout );
387 mpTimer->Start();
388}
389
390/* 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
8.1
Field 'm_pBody' is non-null
8.1
Field 'm_pBody' is non-null
8.1
Field 'm_pBody' is non-null
)
9
←
Taking true branch
→
113 m_pBody->release();
10
←
Calling 'VclReferenceBase::release'
→
14
←
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;
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)
11
←
Assuming the condition is true
→
12
←
Taking true branch
→
40 delete this;
13
←
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