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

Press '?' to see keyboard shortcuts

clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name spinfld.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/control/spinfld.cxx

/home/maarten/src/libreoffice/core/vcl/source/control/spinfld.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 <vcl/commandevent.hxx>
21#include <vcl/event.hxx>
22#include <vcl/decoview.hxx>
23#include <vcl/toolkit/spinfld.hxx>
24#include <vcl/settings.hxx>
25#include <vcl/uitest/uiobject.hxx>
26#include <sal/log.hxx>
27
28#include <controldata.hxx>
29#include <spin.hxx>
30#include <svdata.hxx>
31
32namespace {
33
34void ImplGetSpinbuttonValue(vcl::Window* pWin,
35 const tools::Rectangle& rUpperRect, const tools::Rectangle& rLowerRect,
36 bool bUpperIn, bool bLowerIn, bool bUpperEnabled, bool bLowerEnabled,
37 bool bHorz, SpinbuttonValue& rValue )
38{
39 // convert spinbutton data to a SpinbuttonValue structure for native painting
40
41 rValue.maUpperRect = rUpperRect;
42 rValue.maLowerRect = rLowerRect;
43
44 Point aPointerPos = pWin->GetPointerPosPixel();
45
46 ControlState nState = ControlState::ENABLED;
47 if (bUpperIn)
48 nState |= ControlState::PRESSED;
49 if (!pWin->IsEnabled() || !bUpperEnabled)
50 nState &= ~ControlState::ENABLED;
51 if (pWin->HasFocus())
52 nState |= ControlState::FOCUSED;
53 if (pWin->IsMouseOver() && rUpperRect.IsInside(aPointerPos))
54 nState |= ControlState::ROLLOVER;
55 rValue.mnUpperState = nState;
56
57 nState = ControlState::ENABLED;
58 if (bLowerIn)
59 nState |= ControlState::PRESSED;
60 if (!pWin->IsEnabled() || !bLowerEnabled)
61 nState &= ~ControlState::ENABLED;
62 if (pWin->HasFocus())
63 nState |= ControlState::FOCUSED;
64 // for overlapping spins: highlight only one
65 if (pWin->IsMouseOver() && rLowerRect.IsInside(aPointerPos) && !rUpperRect.IsInside(aPointerPos))
66 nState |= ControlState::ROLLOVER;
67 rValue.mnLowerState = nState;
68
69 rValue.mnUpperPart = bHorz ? ControlPart::ButtonLeft : ControlPart::ButtonUp;
70 rValue.mnLowerPart = bHorz ? ControlPart::ButtonRight : ControlPart::ButtonDown;
71}
72
73bool ImplDrawNativeSpinfield(vcl::RenderContext& rRenderContext, vcl::Window const * pWin, const SpinbuttonValue& rSpinbuttonValue)
74{
75 bool bNativeOK = false;
76
77 if (rRenderContext.IsNativeControlSupported(ControlType::Spinbox, ControlPart::Entire) &&
78 // there is just no useful native support for spinfields with dropdown
79 !(pWin->GetStyle() & WB_DROPDOWN))
80 {
81 if (rRenderContext.IsNativeControlSupported(ControlType::Spinbox, rSpinbuttonValue.mnUpperPart) &&
82 rRenderContext.IsNativeControlSupported(ControlType::Spinbox, rSpinbuttonValue.mnLowerPart))
83 {
84 // only paint the embedded spin buttons, all buttons are painted at once
85 tools::Rectangle aUpperAndLowerButtons( rSpinbuttonValue.maUpperRect.GetUnion( rSpinbuttonValue.maLowerRect ) );
86 bNativeOK = rRenderContext.DrawNativeControl(ControlType::Spinbox, ControlPart::AllButtons, aUpperAndLowerButtons,
87 ControlState::ENABLED, rSpinbuttonValue, OUString());
88 }
89 else
90 {
91 // paint the spinbox as a whole, use borderwindow to have proper clipping
92 vcl::Window* pBorder = pWin->GetWindow(GetWindowType::Border);
93
94 // to not overwrite everything, set the button region as clipregion to the border window
95 tools::Rectangle aClipRect(rSpinbuttonValue.maLowerRect);
96 aClipRect.Union(rSpinbuttonValue.maUpperRect);
97
98 vcl::RenderContext* pContext = &rRenderContext;
99 vcl::Region oldRgn;
100 Point aPt;
101 Size aSize(pBorder->GetOutputSizePixel()); // the size of the border window, i.e., the whole control
102 tools::Rectangle aNatRgn(aPt, aSize);
103
104 if (!pWin->SupportsDoubleBuffering())
105 {
106 // convert from screen space to borderwin space
107 aClipRect.SetPos(pBorder->ScreenToOutputPixel(pWin->OutputToScreenPixel(aClipRect.TopLeft())));
108
109 oldRgn = pBorder->GetClipRegion();
110 pBorder->SetClipRegion(vcl::Region(aClipRect));
111
112 pContext = pBorder;
113 }
114
115 tools::Rectangle aBound, aContent;
116 if (!ImplGetSVData()->maNWFData.mbCanDrawWidgetAnySize &&
117 pContext->GetNativeControlRegion(ControlType::Spinbox, ControlPart::Entire,
118 aNatRgn, ControlState::NONE, rSpinbuttonValue,
119 aBound, aContent))
120 {
121 aSize = aContent.GetSize();
122 }
123
124 tools::Rectangle aRgn(aPt, aSize);
125 if (pWin->SupportsDoubleBuffering())
126 {
127 // convert from borderwin space, to the pWin's space
128 aRgn.SetPos(pWin->ScreenToOutputPixel(pBorder->OutputToScreenPixel(aRgn.TopLeft())));
129 }
130
131 bNativeOK = pContext->DrawNativeControl(ControlType::Spinbox, ControlPart::Entire, aRgn,
132 ControlState::ENABLED, rSpinbuttonValue, OUString());
133
134 if (!pWin->SupportsDoubleBuffering())
135 pBorder->SetClipRegion(oldRgn);
136 }
137 }
138 return bNativeOK;
139}
140
141bool ImplDrawNativeSpinbuttons(vcl::RenderContext& rRenderContext, const SpinbuttonValue& rSpinbuttonValue)
142{
143 bool bNativeOK = false;
144
145 if (rRenderContext.IsNativeControlSupported(ControlType::SpinButtons, ControlPart::Entire))
146 {
147 tools::Rectangle aArea = rSpinbuttonValue.maUpperRect.GetUnion(rSpinbuttonValue.maLowerRect);
148 // only paint the standalone spin buttons, all buttons are painted at once
149 bNativeOK = rRenderContext.DrawNativeControl(ControlType::SpinButtons, ControlPart::AllButtons, aArea,
150 ControlState::ENABLED, rSpinbuttonValue, OUString());
151 }
152 return bNativeOK;
153}
154
155}
156
157void ImplDrawSpinButton(vcl::RenderContext& rRenderContext, vcl::Window* pWindow,
158 const tools::Rectangle& rUpperRect, const tools::Rectangle& rLowerRect,
159 bool bUpperIn, bool bLowerIn, bool bUpperEnabled, bool bLowerEnabled,
160 bool bHorz, bool bMirrorHorz)
161{
162 bool bNativeOK = false;
163
164 if (pWindow)
165 {
166 // are we drawing standalone spin buttons or members of a spinfield ?
167 ControlType aControl = ControlType::SpinButtons;
168 switch (pWindow->GetType())
169 {
170 case WindowType::EDIT:
171 case WindowType::MULTILINEEDIT:
172 case WindowType::PATTERNFIELD:
173 case WindowType::METRICFIELD:
174 case WindowType::CURRENCYFIELD:
175 case WindowType::DATEFIELD:
176 case WindowType::TIMEFIELD:
177 case WindowType::SPINFIELD:
178 case WindowType::FORMATTEDFIELD:
179 aControl = ControlType::Spinbox;
180 break;
181 default:
182 aControl = ControlType::SpinButtons;
183 break;
184 }
185
186 SpinbuttonValue aValue;
187 ImplGetSpinbuttonValue(pWindow, rUpperRect, rLowerRect,
188 bUpperIn, bLowerIn, bUpperEnabled, bLowerEnabled,
189 bHorz, aValue);
190
191 if( aControl == ControlType::Spinbox )
192 bNativeOK = ImplDrawNativeSpinfield(rRenderContext, pWindow, aValue);
193 else if( aControl == ControlType::SpinButtons )
194 bNativeOK = ImplDrawNativeSpinbuttons(rRenderContext, aValue);
195 }
196
197 if (bNativeOK)
198 return;
199
200 ImplDrawUpDownButtons(rRenderContext,
201 rUpperRect, rLowerRect,
202 bUpperIn, bLowerIn, bUpperEnabled, bLowerEnabled,
203 bHorz, bMirrorHorz);
204}
205
206void ImplDrawUpDownButtons(vcl::RenderContext& rRenderContext,
207 const tools::Rectangle& rUpperRect, const tools::Rectangle& rLowerRect,
208 bool bUpperIn, bool bLowerIn, bool bUpperEnabled, bool bLowerEnabled,
209 bool bHorz, bool bMirrorHorz)
210{
211 DecorationView aDecoView(&rRenderContext);
212
213 SymbolType eType1, eType2;
214
215 if ( bHorz )
216 {
217 eType1 = bMirrorHorz ? SymbolType::SPIN_RIGHT : SymbolType::SPIN_LEFT;
218 eType2 = bMirrorHorz ? SymbolType::SPIN_LEFT : SymbolType::SPIN_RIGHT;
219 }
220 else
221 {
222 eType1 = SymbolType::SPIN_UP;
223 eType2 = SymbolType::SPIN_DOWN;
224 }
225
226 DrawButtonFlags nStyle = DrawButtonFlags::NoLeftLightBorder;
227 // draw upper/left Button
228 if (bUpperIn)
229 nStyle |= DrawButtonFlags::Pressed;
230
231 tools::Rectangle aUpRect = aDecoView.DrawButton(rUpperRect, nStyle);
232
233 nStyle = DrawButtonFlags::NoLeftLightBorder;
234 // draw lower/right Button
235 if (bLowerIn)
236 nStyle |= DrawButtonFlags::Pressed;
237
238 tools::Rectangle aLowRect = aDecoView.DrawButton(rLowerRect, nStyle);
239
240 // make use of additional default edge
241 aUpRect.AdjustLeft( -1 );
242 aUpRect.AdjustTop( -1 );
243 aUpRect.AdjustRight( 1 );
244 aUpRect.AdjustBottom( 1 );
245 aLowRect.AdjustLeft( -1 );
246 aLowRect.AdjustTop( -1 );
247 aLowRect.AdjustRight( 1 );
248 aLowRect.AdjustBottom( 1 );
249
250 // draw into the edge, so that something is visible if the rectangle is too small
251 if (aUpRect.GetHeight() < 4)
252 {
253 aUpRect.AdjustRight( 1 );
254 aUpRect.AdjustBottom( 1 );
255 aLowRect.AdjustRight( 1 );
256 aLowRect.AdjustBottom( 1 );
257 }
258
259 // calculate Symbol size
260 long nTempSize1 = aUpRect.GetWidth();
261 long nTempSize2 = aLowRect.GetWidth();
262 if (std::abs( nTempSize1-nTempSize2 ) == 1)
263 {
264 if (nTempSize1 > nTempSize2)
265 aUpRect.AdjustLeft( 1 );
266 else
267 aLowRect.AdjustLeft( 1 );
268 }
269 nTempSize1 = aUpRect.GetHeight();
270 nTempSize2 = aLowRect.GetHeight();
271 if (std::abs(nTempSize1 - nTempSize2) == 1)
272 {
273 if (nTempSize1 > nTempSize2)
274 aUpRect.AdjustTop( 1 );
275 else
276 aLowRect.AdjustTop( 1 );
277 }
278
279 const StyleSettings& rStyleSettings = rRenderContext.GetSettings().GetStyleSettings();
280
281 DrawSymbolFlags nSymStyle = DrawSymbolFlags::NONE;
282 if (!bUpperEnabled)
283 nSymStyle |= DrawSymbolFlags::Disable;
284 aDecoView.DrawSymbol(aUpRect, eType1, rStyleSettings.GetButtonTextColor(), nSymStyle);
285
286 nSymStyle = DrawSymbolFlags::NONE;
287 if (!bLowerEnabled)
288 nSymStyle |= DrawSymbolFlags::Disable;
289 aDecoView.DrawSymbol(aLowRect, eType2, rStyleSettings.GetButtonTextColor(), nSymStyle);
290}
291
292void SpinField::ImplInitSpinFieldData()
293{
294 mpEdit.disposeAndClear();
295 mbSpin = false;
296 mbRepeat = false;
297 mbUpperIn = false;
298 mbLowerIn = false;
299 mbInitialUp = false;
300 mbInitialDown = false;
301 mbInDropDown = false;
302}
303
304void SpinField::ImplInit(vcl::Window* pParent, WinBits nWinStyle)
305{
306 Edit::ImplInit( pParent, nWinStyle );
307
308 if (!(nWinStyle & (WB_SPIN | WB_DROPDOWN)))
309 return;
310
311 mbSpin = true;
312
313 // Some themes want external spin buttons, therefore the main
314 // spinfield should not overdraw the border between its encapsulated
315 // edit field and the spin buttons
316 if ((nWinStyle & WB_SPIN) && ImplUseNativeBorder(*this, nWinStyle))
317 {
318 SetBackground();
319 mpEdit.set(VclPtr<Edit>::Create(this, WB_NOBORDER));
320 mpEdit->SetBackground();
321 }
322 else
323 mpEdit.set(VclPtr<Edit>::Create(this, WB_NOBORDER));
324
325 mpEdit->EnableRTL(false);
326 mpEdit->SetPosPixel(Point());
327 mpEdit->Show();
328
329 SetSubEdit(mpEdit);
330
331 maRepeatTimer.SetInvokeHandler(LINK( this, SpinField, ImplTimeout)::tools::detail::makeLink( ::tools::detail::castTo<SpinField
*>(this), &SpinField::LinkStubImplTimeout));
332 maRepeatTimer.SetTimeout(MouseSettings::GetButtonStartRepeat());
333 if (nWinStyle & WB_REPEAT)
334 mbRepeat = true;
335
336 SetCompoundControl(true);
337}
338
339SpinField::SpinField(vcl::Window* pParent, WinBits nWinStyle, WindowType nType) :
340 Edit(nType)
341{
342 ImplInitSpinFieldData();
343 ImplInit(pParent, nWinStyle);
344}
345
346SpinField::~SpinField()
347{
348 disposeOnce();
349}
350
351void SpinField::dispose()
352{
353 mpEdit.disposeAndClear();
1
Calling 'VclPtr::disposeAndClear'
→
354
355 Edit::dispose();
356}
357
358void SpinField::Up()
359{
360 ImplCallEventListenersAndHandler( VclEventId::SpinfieldUp, [this] () { maUpHdlLink.Call(*this); } );
361}
362
363void SpinField::Down()
364{
365 ImplCallEventListenersAndHandler( VclEventId::SpinfieldDown, [this] () { maDownHdlLink.Call(*this); } );
366}
367
368void SpinField::First()
369{
370 ImplCallEventListenersAndHandler(VclEventId::SpinfieldFirst, nullptr);
371}
372
373void SpinField::Last()
374{
375 ImplCallEventListenersAndHandler(VclEventId::SpinfieldLast, nullptr);
376}
377
378void SpinField::MouseButtonDown( const MouseEvent& rMEvt )
379{
380 if (!HasFocus() && (!mpEdit || !mpEdit->HasFocus()))
381 {
382 GrabFocus();
383 }
384
385 if (!IsReadOnly())
386 {
387 if (maUpperRect.IsInside(rMEvt.GetPosPixel()))
388 {
389 mbUpperIn = true;
390 mbInitialUp = true;
391 Invalidate(maUpperRect);
392 }
393 else if (maLowerRect.IsInside(rMEvt.GetPosPixel()))
394 {
395 mbLowerIn = true;
396 mbInitialDown = true;
397 Invalidate(maLowerRect);
398 }
399 else if (maDropDownRect.IsInside(rMEvt.GetPosPixel()))
400 {
401 // put DropDownButton to the right
402 mbInDropDown = ShowDropDown( !mbInDropDown );
403 Invalidate(tools::Rectangle(Point(), GetOutputSizePixel()));
404 }
405
406 if (mbUpperIn || mbLowerIn)
407 {
408 CaptureMouse();
409 if (mbRepeat)
410 maRepeatTimer.Start();
411 return;
412 }
413 }
414
415 Edit::MouseButtonDown(rMEvt);
416}
417
418void SpinField::MouseButtonUp(const MouseEvent& rMEvt)
419{
420 ReleaseMouse();
421 mbInitialUp = mbInitialDown = false;
422 maRepeatTimer.Stop();
423 maRepeatTimer.SetTimeout(MouseSettings::GetButtonStartRepeat());
424
425 if (mbUpperIn)
426 {
427 mbUpperIn = false;
428 Invalidate(maUpperRect);
429 Up();
430 }
431 else if (mbLowerIn)
432 {
433 mbLowerIn = false;
434 Invalidate(maLowerRect);
435 Down();
436 }
437
438 Edit::MouseButtonUp(rMEvt);
439}
440
441void SpinField::MouseMove(const MouseEvent& rMEvt)
442{
443 if (rMEvt.IsLeft())
444 {
445 if (mbInitialUp)
446 {
447 bool bNewUpperIn = maUpperRect.IsInside(rMEvt.GetPosPixel());
448 if (bNewUpperIn != mbUpperIn)
449 {
450 if (bNewUpperIn)
451 {
452 if (mbRepeat)
453 maRepeatTimer.Start();
454 }
455 else
456 maRepeatTimer.Stop();
457
458 mbUpperIn = bNewUpperIn;
459 Invalidate(maUpperRect);
460 }
461 }
462 else if (mbInitialDown)
463 {
464 bool bNewLowerIn = maLowerRect.IsInside(rMEvt.GetPosPixel());
465 if (bNewLowerIn != mbLowerIn)
466 {
467 if (bNewLowerIn)
468 {
469 if (mbRepeat)
470 maRepeatTimer.Start();
471 }
472 else
473 maRepeatTimer.Stop();
474
475 mbLowerIn = bNewLowerIn;
476 Invalidate(maLowerRect);
477 }
478 }
479 }
480
481 Edit::MouseMove(rMEvt);
482}
483
484bool SpinField::EventNotify(NotifyEvent& rNEvt)
485{
486 bool bDone = false;
487 if (rNEvt.GetType() == MouseNotifyEvent::KEYINPUT)
488 {
489 const KeyEvent& rKEvt = *rNEvt.GetKeyEvent();
490 if (!IsReadOnly())
491 {
492 sal_uInt16 nMod = rKEvt.GetKeyCode().GetModifier();
493 switch (rKEvt.GetKeyCode().GetCode())
494 {
495 case KEY_UP:
496 {
497 if (!nMod)
498 {
499 Up();
500 bDone = true;
501 }
502 }
503 break;
504 case KEY_DOWN:
505 {
506 if (!nMod)
507 {
508 Down();
509 bDone = true;
510 }
511 else if ((nMod == KEY_MOD2) && !mbInDropDown && (GetStyle() & WB_DROPDOWN))
512 {
513 mbInDropDown = ShowDropDown(true);
514 Invalidate(tools::Rectangle(Point(), GetOutputSizePixel()));
515 bDone = true;
516 }
517 }
518 break;
519 case KEY_PAGEUP:
520 {
521 if (!nMod)
522 {
523 Last();
524 bDone = true;
525 }
526 }
527 break;
528 case KEY_PAGEDOWN:
529 {
530 if (!nMod)
531 {
532 First();
533 bDone = true;
534 }
535 }
536 break;
537 }
538 }
539 }
540
541 if (rNEvt.GetType() == MouseNotifyEvent::COMMAND)
542 {
543 if ((rNEvt.GetCommandEvent()->GetCommand() == CommandEventId::Wheel) && !IsReadOnly())
544 {
545 MouseWheelBehaviour nWheelBehavior(GetSettings().GetMouseSettings().GetWheelBehavior());
546 if (nWheelBehavior == MouseWheelBehaviour::ALWAYS
547 || (nWheelBehavior == MouseWheelBehaviour::FocusOnly && HasChildPathFocus()))
548 {
549 const CommandWheelData* pData = rNEvt.GetCommandEvent()->GetWheelData();
550 if (pData->GetMode() == CommandWheelMode::SCROLL)
551 {
552 if (pData->GetDelta() < 0)
553 Down();
554 else
555 Up();
556 bDone = true;
557
558 if (!HasChildPathFocus())
559 GrabFocus();
560 }
561 }
562 else
563 bDone = false; // don't eat this event, let the default handling happen (i.e. scroll the context)
564 }
565 }
566
567 return bDone || Edit::EventNotify(rNEvt);
568}
569
570void SpinField::FillLayoutData() const
571{
572 if (mbSpin)
573 {
574 mpControlData->mpLayoutData.reset( new vcl::ControlLayoutData );
575 AppendLayoutData(*GetSubEdit());
576 GetSubEdit()->SetLayoutDataParent(this);
577 }
578 else
579 Edit::FillLayoutData();
580}
581
582void SpinField::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
583{
584 if (mbSpin)
585 {
586 bool bEnable = IsEnabled();
587 ImplDrawSpinButton(rRenderContext, this, maUpperRect, maLowerRect,
588 mbUpperIn, mbLowerIn, bEnable, bEnable);
589 }
590
591 if (GetStyle() & WB_DROPDOWN)
592 {
593 DecorationView aView(&rRenderContext);
594
595 DrawButtonFlags nStyle = DrawButtonFlags::NoLightBorder;
596 if (mbInDropDown)
597 nStyle |= DrawButtonFlags::Pressed;
598 tools::Rectangle aInnerRect = aView.DrawButton(maDropDownRect, nStyle);
599
600 DrawSymbolFlags nSymbolStyle = IsEnabled() ? DrawSymbolFlags::NONE : DrawSymbolFlags::Disable;
601 aView.DrawSymbol(aInnerRect, SymbolType::SPIN_DOWN, rRenderContext.GetSettings().GetStyleSettings().GetButtonTextColor(), nSymbolStyle);
602 }
603
604 Edit::Paint(rRenderContext, rRect);
605}
606
607void SpinField::ImplCalcButtonAreas(OutputDevice* pDev, const Size& rOutSz, tools::Rectangle& rDDArea,
608 tools::Rectangle& rSpinUpArea, tools::Rectangle& rSpinDownArea)
609{
610 const StyleSettings& rStyleSettings = pDev->GetSettings().GetStyleSettings();
611
612 Size aSize = rOutSz;
613 Size aDropDownSize;
614
615 if (GetStyle() & WB_DROPDOWN)
616 {
617 long nW = rStyleSettings.GetScrollBarSize();
618 nW = GetDrawPixel( pDev, nW );
619 aDropDownSize = Size( CalcZoom( nW ), aSize.Height() );
620 aSize.AdjustWidth( -(aDropDownSize.Width()) );
621 rDDArea = tools::Rectangle( Point( aSize.Width(), 0 ), aDropDownSize );
622 rDDArea.AdjustTop( -1 );
623 }
624 else
625 rDDArea.SetEmpty();
626
627 // calculate sizes according to the height
628 if (GetStyle() & WB_SPIN)
629 {
630 long nBottom1 = aSize.Height()/2;
631 long nBottom2 = aSize.Height()-1;
632 long nTop2 = nBottom1;
633 if ( !(aSize.Height() & 0x01) )
634 nBottom1--;
635
636 bool bNativeRegionOK = false;
637 tools::Rectangle aContentUp, aContentDown;
638
639 if ((pDev->GetOutDevType() == OUTDEV_WINDOW) &&
640 // there is just no useful native support for spinfields with dropdown
641 ! (GetStyle() & WB_DROPDOWN) &&
642 IsNativeControlSupported(ControlType::Spinbox, ControlPart::Entire))
643 {
644 vcl::Window *pWin = static_cast<vcl::Window*>(pDev);
645 vcl::Window *pBorder = pWin->GetWindow( GetWindowType::Border );
646
647 // get the system's spin button size
648 ImplControlValue aControlValue;
649 tools::Rectangle aBound;
650 Point aPoint;
651
652 // use the full extent of the control
653 tools::Rectangle aArea( aPoint, pBorder->GetOutputSizePixel() );
654
655 bNativeRegionOK =
656 pWin->GetNativeControlRegion(ControlType::Spinbox, ControlPart::ButtonUp,
657 aArea, ControlState::NONE, aControlValue, aBound, aContentUp) &&
658 pWin->GetNativeControlRegion(ControlType::Spinbox, ControlPart::ButtonDown,
659 aArea, ControlState::NONE, aControlValue, aBound, aContentDown);
660
661 if (bNativeRegionOK)
662 {
663 // convert back from border space to local coordinates
664 aPoint = pBorder->ScreenToOutputPixel( pWin->OutputToScreenPixel( aPoint ) );
665 aContentUp.Move(-aPoint.X(), -aPoint.Y());
666 aContentDown.Move(-aPoint.X(), -aPoint.Y());
667 }
668 }
669
670 if (bNativeRegionOK)
671 {
672 rSpinUpArea = aContentUp;
673 rSpinDownArea = aContentDown;
674 }
675 else
676 {
677 aSize.AdjustWidth( -(CalcZoom( GetDrawPixel( pDev, rStyleSettings.GetSpinSize() ) )) );
678
679 rSpinUpArea = tools::Rectangle( aSize.Width(), 0, rOutSz.Width()-aDropDownSize.Width()-1, nBottom1 );
680 rSpinDownArea = tools::Rectangle( rSpinUpArea.Left(), nTop2, rSpinUpArea.Right(), nBottom2 );
681 }
682 }
683 else
684 {
685 rSpinUpArea.SetEmpty();
686 rSpinDownArea.SetEmpty();
687 }
688}
689
690void SpinField::Resize()
691{
692 if (!mbSpin)
693 return;
694
695 Control::Resize();
696 Size aSize = GetOutputSizePixel();
697 bool bSubEditPositioned = false;
698
699 if (GetStyle() & (WB_SPIN | WB_DROPDOWN))
700 {
701 ImplCalcButtonAreas( this, aSize, maDropDownRect, maUpperRect, maLowerRect );
702
703 ImplControlValue aControlValue;
704 Point aPoint;
705 tools::Rectangle aContent, aBound;
706
707 // use the full extent of the control
708 vcl::Window *pBorder = GetWindow( GetWindowType::Border );
709 tools::Rectangle aArea( aPoint, pBorder->GetOutputSizePixel() );
710
711 // adjust position and size of the edit field
712 if (GetNativeControlRegion(ControlType::Spinbox, ControlPart::SubEdit, aArea, ControlState::NONE,
713 aControlValue, aBound, aContent) &&
714 // there is just no useful native support for spinfields with dropdown
715 !(GetStyle() & WB_DROPDOWN))
716 {
717 // convert back from border space to local coordinates
718 aPoint = pBorder->ScreenToOutputPixel(OutputToScreenPixel(aPoint));
719 aContent.Move(-aPoint.X(), -aPoint.Y());
720
721 // use the themes drop down size
722 mpEdit->SetPosPixel( aContent.TopLeft() );
723 bSubEditPositioned = true;
724 aSize = aContent.GetSize();
725 }
726 else
727 {
728 if (maUpperRect.IsEmpty())
729 {
730 SAL_WARN_IF( maDropDownRect.IsEmpty(), "vcl", "SpinField::Resize: SPIN && DROPDOWN, but all empty rects?" )do { if (true && (maDropDownRect.IsEmpty())) { 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
() << "SpinField::Resize: SPIN && DROPDOWN, but all empty rects?"
) == 1) { ::sal_detail_log( (::SAL_DETAIL_LOG_LEVEL_WARN), ("vcl"
), ("/home/maarten/src/libreoffice/core/vcl/source/control/spinfld.cxx"
":" "730" ": "), ::sal::detail::unwrapStream( ::sal::detail::
StreamStart() << "SpinField::Resize: SPIN && DROPDOWN, but all empty rects?"
), 0); } else { ::std::ostringstream sal_detail_stream; sal_detail_stream
<< "SpinField::Resize: SPIN && DROPDOWN, but all empty rects?"
; ::sal::detail::log( (::SAL_DETAIL_LOG_LEVEL_WARN), ("vcl"),
("/home/maarten/src/libreoffice/core/vcl/source/control/spinfld.cxx"
":" "730" ": "), sal_detail_stream, 0); }; break; case SAL_DETAIL_LOG_ACTION_FATAL
: if (sizeof ::sal::detail::getResult( ::sal::detail::StreamStart
() << "SpinField::Resize: SPIN && DROPDOWN, but all empty rects?"
) == 1) { ::sal_detail_log( (::SAL_DETAIL_LOG_LEVEL_WARN), ("vcl"
), ("/home/maarten/src/libreoffice/core/vcl/source/control/spinfld.cxx"
":" "730" ": "), ::sal::detail::unwrapStream( ::sal::detail::
StreamStart() << "SpinField::Resize: SPIN && DROPDOWN, but all empty rects?"
), 0); } else { ::std::ostringstream sal_detail_stream; sal_detail_stream
<< "SpinField::Resize: SPIN && DROPDOWN, but all empty rects?"
; ::sal::detail::log( (::SAL_DETAIL_LOG_LEVEL_WARN), ("vcl"),
("/home/maarten/src/libreoffice/core/vcl/source/control/spinfld.cxx"
":" "730" ": "), sal_detail_stream, 0); }; std::abort(); break
; } } } while (false);
731 aSize.setWidth( maDropDownRect.Left() );
732 }
733 else
734 aSize.setWidth( maUpperRect.Left() );
735 }
736 }
737
738 if (!bSubEditPositioned)
739 {
740 // this moves our sub edit if RTL gets switched
741 mpEdit->SetPosPixel(Point());
742 }
743 mpEdit->SetSizePixel(aSize);
744
745 if (GetStyle() & WB_SPIN)
746 Invalidate(tools::Rectangle(maUpperRect.TopLeft(), maLowerRect.BottomRight()));
747 if (GetStyle() & WB_DROPDOWN)
748 Invalidate(maDropDownRect);
749}
750
751void SpinField::StateChanged(StateChangedType nType)
752{
753 Edit::StateChanged(nType);
754
755 if (nType == StateChangedType::Enable)
756 {
757 if (mbSpin || (GetStyle() & WB_DROPDOWN))
758 {
759 mpEdit->Enable(IsEnabled());
760
761 if (mbSpin)
762 {
763 Invalidate(maLowerRect);
764 Invalidate(maUpperRect);
765 }
766 if (GetStyle() & WB_DROPDOWN)
767 Invalidate(maDropDownRect);
768 }
769 }
770 else if (nType == StateChangedType::Style)
771 {
772 if (GetStyle() & WB_REPEAT)
773 mbRepeat = true;
774 else
775 mbRepeat = false;
776 }
777 else if (nType == StateChangedType::Zoom)
778 {
779 Resize();
780 if (mpEdit)
781 mpEdit->SetZoom(GetZoom());
782 Invalidate();
783 }
784 else if (nType == StateChangedType::ControlFont)
785 {
786 if (mpEdit)
787 mpEdit->SetControlFont(GetControlFont());
788 Invalidate();
789 }
790 else if (nType == StateChangedType::ControlForeground)
791 {
792 if (mpEdit)
793 mpEdit->SetControlForeground(GetControlForeground());
794 Invalidate();
795 }
796 else if (nType == StateChangedType::ControlBackground)
797 {
798 if (mpEdit)
799 mpEdit->SetControlBackground(GetControlBackground());
800 Invalidate();
801 }
802 else if( nType == StateChangedType::Mirroring )
803 {
804 if (mpEdit)
805 mpEdit->CompatStateChanged(StateChangedType::Mirroring);
806 Resize();
807 }
808}
809
810void SpinField::DataChanged( const DataChangedEvent& rDCEvt )
811{
812 Edit::DataChanged(rDCEvt);
813
814 if ((rDCEvt.GetType() == DataChangedEventType::SETTINGS) &&
815 (rDCEvt.GetFlags() & AllSettingsFlags::STYLE))
816 {
817 Resize();
818 Invalidate();
819 }
820}
821
822tools::Rectangle* SpinField::ImplFindPartRect(const Point& rPt)
823{
824 if (maUpperRect.IsInside(rPt))
825 return &maUpperRect;
826 else if (maLowerRect.IsInside(rPt))
827 return &maLowerRect;
828 else
829 return nullptr;
830}
831
832bool SpinField::PreNotify(NotifyEvent& rNEvt)
833{
834 if (rNEvt.GetType() == MouseNotifyEvent::MOUSEMOVE)
835 {
836 const MouseEvent* pMouseEvt = rNEvt.GetMouseEvent();
837 if (pMouseEvt && !pMouseEvt->GetButtons() && !pMouseEvt->IsSynthetic() && !pMouseEvt->IsModifierChanged())
838 {
839 // trigger redraw if mouse over state has changed
840 if( IsNativeControlSupported(ControlType::Spinbox, ControlPart::Entire) ||
841 IsNativeControlSupported(ControlType::Spinbox, ControlPart::AllButtons) )
842 {
843 tools::Rectangle* pRect = ImplFindPartRect( GetPointerPosPixel() );
844 tools::Rectangle* pLastRect = ImplFindPartRect( GetLastPointerPosPixel() );
845 if( pRect != pLastRect || (pMouseEvt->IsLeaveWindow() || pMouseEvt->IsEnterWindow()) )
846 {
847 // FIXME: this is currently only on macOS
848 // check for other platforms that need similar handling
849 if (ImplGetSVData()->maNWFData.mbNoFocusRects && IsNativeWidgetEnabled() &&
850 IsNativeControlSupported(ControlType::Editbox, ControlPart::Entire))
851 {
852 ImplInvalidateOutermostBorder(this);
853 }
854 else
855 {
856 // paint directly
857 vcl::Region aRgn( GetActiveClipRegion() );
858 if (pLastRect)
859 {
860 SetClipRegion(vcl::Region(*pLastRect));
861 Invalidate(*pLastRect);
862 SetClipRegion( aRgn );
863 }
864 if (pRect)
865 {
866 SetClipRegion(vcl::Region(*pRect));
867 Invalidate(*pRect);
868 SetClipRegion( aRgn );
869 }
870 }
871 }
872 }
873 }
874 }
875
876 return Edit::PreNotify(rNEvt);
877}
878
879void SpinField::EndDropDown()
880{
881 mbInDropDown = false;
882 Invalidate(tools::Rectangle(Point(), GetOutputSizePixel()));
883}
884
885bool SpinField::ShowDropDown( bool )
886{
887 return false;
888}
889
890Size SpinField::CalcMinimumSizeForText(const OUString &rString) const
891{
892 Size aSz = Edit::CalcMinimumSizeForText(rString);
893
894 if ( GetStyle() & WB_DROPDOWN )
895 aSz.AdjustWidth(GetSettings().GetStyleSettings().GetScrollBarSize() );
896 if ( GetStyle() & WB_SPIN )
897 {
898 ImplControlValue aControlValue;
899 tools::Rectangle aArea( Point(), Size(100, aSz.Height()));
900 tools::Rectangle aEntireBound, aEntireContent, aEditBound, aEditContent;
901 if (
902 GetNativeControlRegion(ControlType::Spinbox, ControlPart::Entire,
903 aArea, ControlState::NONE, aControlValue, aEntireBound, aEntireContent) &&
904 GetNativeControlRegion(ControlType::Spinbox, ControlPart::SubEdit,
905 aArea, ControlState::NONE, aControlValue, aEditBound, aEditContent)
906 )
907 {
908 aSz.AdjustWidth(aEntireContent.GetWidth() - aEditContent.GetWidth());
909 }
910 else
911 {
912 aSz.AdjustWidth(maUpperRect.GetWidth() );
913 }
914 }
915
916 return aSz;
917}
918
919Size SpinField::CalcMinimumSize() const
920{
921 return CalcMinimumSizeForText(GetText());
922}
923
924Size SpinField::GetOptimalSize() const
925{
926 return CalcMinimumSize();
927}
928
929Size SpinField::CalcSize(sal_Int32 nChars) const
930{
931 Size aSz = Edit::CalcSize( nChars );
932
933 if ( GetStyle() & WB_DROPDOWN )
934 aSz.AdjustWidth(GetSettings().GetStyleSettings().GetScrollBarSize() );
935 if ( GetStyle() & WB_SPIN )
936 aSz.AdjustWidth(GetSettings().GetStyleSettings().GetSpinSize() );
937
938 return aSz;
939}
940
941IMPL_LINK( SpinField, ImplTimeout, Timer*, pTimer, void )void SpinField::LinkStubImplTimeout(void * instance, Timer* data
) { return static_cast<SpinField *>(instance)->ImplTimeout
(data); } void SpinField::ImplTimeout(Timer* pTimer)
942{
943 if ( pTimer->GetTimeout() == MouseSettings::GetButtonStartRepeat() )
944 {
945 pTimer->SetTimeout( GetSettings().GetMouseSettings().GetButtonRepeat() );
946 pTimer->Start();
947 }
948 else
949 {
950 if ( mbInitialUp )
951 Up();
952 else
953 Down();
954 }
955}
956
957void SpinField::Draw(OutputDevice* pDev, const Point& rPos, DrawFlags nFlags)
958{
959 Edit::Draw(pDev, rPos, nFlags);
960
961 WinBits nFieldStyle = GetStyle();
962 if ( (nFlags & DrawFlags::NoControls ) || !( nFieldStyle & (WB_SPIN|WB_DROPDOWN) ) )
963 return;
964
965 Point aPos = pDev->LogicToPixel( rPos );
966 Size aSize = GetSizePixel();
967 AllSettings aOldSettings = pDev->GetSettings();
968
969 pDev->Push();
970 pDev->SetMapMode();
971
972 tools::Rectangle aDD, aUp, aDown;
973 ImplCalcButtonAreas(pDev, aSize, aDD, aUp, aDown);
974 aDD.Move(aPos.X(), aPos.Y());
975 aUp.Move(aPos.X(), aPos.Y());
976 aUp.AdjustTop( 1 );
977 aDown.Move(aPos.X(), aPos.Y());
978
979 Color aButtonTextColor;
980 if (nFlags & DrawFlags::Mono)
981 aButtonTextColor = COL_BLACK;
982 else
983 aButtonTextColor = GetSettings().GetStyleSettings().GetButtonTextColor();
984
985 if (GetStyle() & WB_DROPDOWN)
986 {
987 DecorationView aView( pDev );
988 tools::Rectangle aInnerRect = aView.DrawButton( aDD, DrawButtonFlags::NoLightBorder );
989 DrawSymbolFlags nSymbolStyle = IsEnabled() ? DrawSymbolFlags::NONE : DrawSymbolFlags::Disable;
990 aView.DrawSymbol(aInnerRect, SymbolType::SPIN_DOWN, aButtonTextColor, nSymbolStyle);
991 }
992
993 if (GetStyle() & WB_SPIN)
994 {
995 ImplDrawSpinButton(*pDev, this, aUp, aDown, false, false);
996 }
997
998 pDev->Pop();
999 pDev->SetSettings(aOldSettings);
1000
1001}
1002
1003FactoryFunction SpinField::GetUITestFactory() const
1004{
1005 return SpinFieldUIObject::create;
1006}
1007
1008/* 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);
2
←
Calling copy constructor for 'Reference<Edit>'
→
5
←
Returning from copy constructor for 'Reference<Edit>'
→
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
6
←
Calling 'Reference::clear'
→
13
←
Returning; memory was released
→
205 if (aTmp.get()) {
14
←
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();
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)
3
←
Assuming field 'm_pBody' is non-null
→
4
←
Taking true branch
→
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
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
)
7
←
Taking true branch
→
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
8
←
Calling 'VclReferenceBase::release'
→
12
←
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;
15
←
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)
9
←
Assuming the condition is true
→
10
←
Taking true branch
→
40 delete this;
11
←
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