Bug Summary

File:librecad/src/ui/components/status_bar/lc_relzerocoordinateswidget.cpp
Warning:line 132, column 27
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name lc_relzerocoordinateswidget.cpp -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 -fhalf-no-semantic-interposition -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/home/runner/work/LibreCAD/LibreCAD/librecad/src -fcoverage-compilation-dir=/home/runner/work/LibreCAD/LibreCAD/librecad/src -resource-dir /usr/lib/llvm-18/lib/clang/18 -D _REENTRANT -D DWGSUPPORT -D MUPARSER_STATIC -D QC_APPDIR="librecad" -D LC_VERSION=2.2.2_alpha1-607-g330d41cec -D LC_PRERELEASE=true; -D QT_NO_DEBUG -D QT_SVG_LIB -D QT_PRINTSUPPORT_LIB -D QT_WIDGETS_LIB -D QT_GUI_LIB -D QT_NETWORK_LIB -D QT_CORE_LIB -I . -I /usr/include -I ../../libraries/lciconengine -I ../../libraries/libdxfrw/src -I ../../libraries/jwwlib/src -I ../../libraries/shapelib/src -I cmd -I lib/actions -I lib/actions/visual_snap -I lib/actions/options -I lib/creation -I lib/debug -I lib/engine -I lib/engine/document -I lib/engine/document/blocks -I lib/engine/document/container -I lib/engine/document/dimstyles -I lib/engine/document/entities -I lib/engine/document/entities/support -I lib/engine/document/fonts -I lib/engine/document/io -I lib/engine/document/layers -I lib/engine/document/patterns -I lib/engine/document/selection -I lib/engine/document/textstyles -I lib/engine/document/ucs -I lib/engine/document/variables -I lib/engine/document/views -I lib/engine/clipboard -I lib/engine/overlays -I lib/engine/overlays/angles_base -I lib/engine/overlays/highlight -I lib/engine/overlays/preview -I lib/engine/overlays/references -I lib/engine/overlays/crosshair -I lib/engine/overlays/info_cursor -I lib/engine/overlays/overlay_box -I lib/engine/overlays/ucs_mark -I lib/engine/undo -I lib/engine/utils -I lib/engine/settings -I lib/fileio -I lib/filters -I lib/generators -I lib/generators/makercamsvg -I lib/generators/layers -I lib/generators/image -I lib/gui -I lib/gui/grid -I lib/gui/render -I lib/gui/render/headless -I lib/gui/render/widget -I lib/information -I lib/math -I lib/modification -I lib/selection -I lib/selection/metaentity -I lib/selection/metaentity/entities -I lib/printing -I lib/properties -I actions -I actions/dock_widgets -I actions/dock_widgets/block -I actions/dock_widgets/entity_info -I actions/dock_widgets/layer -I actions/dock_widgets/library -I actions/dock_widgets/ucs_list -I actions/drawing -I actions/drawing/draw -I actions/drawing/draw/arc -I actions/drawing/draw/circle -I actions/drawing/draw/curve -I actions/drawing/draw/spline -I actions/drawing/draw/dimensions -I actions/drawing/draw/ellipse -I actions/drawing/draw/hatch -I actions/drawing/draw/image -I actions/drawing/draw/line -I actions/drawing/draw/point -I actions/drawing/draw/rect -I actions/drawing/draw/polygon -I actions/drawing/draw/misc -I actions/drawing/draw/line/shapes -I actions/drawing/draw/line/misc -I actions/drawing/draw/line/shapes/rect -I actions/drawing/draw/line/shapes/polygon -I actions/drawing/draw/polyline -I actions/drawing/draw/text -I actions/drawing/edit -I actions/drawing/info -I actions/drawing/pick -I actions/drawing/modify -I actions/drawing/pen -I actions/drawing/rel_zero -I actions/drawing/selection -I actions/drawing/snap -I actions/drawing/zoom -I actions/file -I actions/options -I actions/print_preview -I ui -I ui/action_options -I ui/action_options/circle -I ui/action_options/curve -I ui/action_options/spline -I ui/action_options/dimensions -I ui/action_options/edit -I ui/action_options/image -I ui/action_options/info -I ui/action_options/insert -I ui/action_options/line -I ui/action_options/rect -I ui/action_options/polygon -I ui/action_options/misc -I ui/action_options/modify -I ui/action_options/ellipse -I ui/action_options/other -I ui/action_options/polyline -I ui/action_options/point -I ui/action_options/print_preview -I ui/action_options/selection -I ui/action_options/snap -I ui/action_options/text -I ui/actions -I ui/components -I ui/components/relative_position_assistant -I ui/components/comboboxes -I ui/components/containers -I ui/components/creators -I ui/components/layouts -I ui/components/pen -I ui/components/status_bar -I ui/components/toolbars -I ui/components/utils -I ui/dialogs -I ui/dialogs/actions -I ui/dialogs/actions/modify -I ui/dialogs/actions/quick_selection -I ui/dialogs/modify -I ui/dialogs/entity -I ui/dialogs/creators -I ui/dialogs/file -I ui/dialogs/file/export -I ui/dialogs/file/export/layers -I ui/dialogs/file/export/image -I ui/dialogs/file/export/makercam -I ui/dialogs/main -I ui/dialogs/settings -I ui/dialogs/settings/dimstyles -I ui/dialogs/settings/dimstyles/dimstyle_manager -I ui/dialogs/settings/dimstyles/dimstyle_manager/support -I ui/dialogs/settings/options_device -I ui/dialogs/settings/options_drawing -I ui/dialogs/settings/options_general -I ui/dialogs/settings/options_widget -I ui/dialogs/settings/shortcuts -I ui/dock_widgets -I ui/dock_widgets/block_widget -I ui/dock_widgets/command_line -I ui/dock_widgets/entity_info -I ui/dock_widgets/layer_widget -I ui/dock_widgets/layers_tree -I ui/dock_widgets/library_widget -I ui/dock_widgets/pen_palette -I ui/dock_widgets/pen_wizard -I ui/dock_widgets/property_sheet -I ui/dock_widgets/property_sheet/lib -I ui/dock_widgets/property_sheet/lib/properties -I ui/dock_widgets/property_sheet/lib/view -I ui/dock_widgets/property_sheet/lib/view/edit -I ui/dock_widgets/property_sheet/lib/widgets -I ui/dock_widgets/property_sheet/lib/widgets/sheet -I ui/dock_widgets/property_sheet/metaentity -I ui/dock_widgets/property_sheet/metaentity/entities -I ui/dock_widgets/property_sheet/metaentity/entities/document -I ui/dock_widgets/property_sheet/properties -I ui/dock_widgets/property_sheet/properties/action -I ui/dock_widgets/property_sheet/properties/bool -I ui/dock_widgets/property_sheet/properties/color -I ui/dock_widgets/property_sheet/properties/double -I ui/dock_widgets/property_sheet/properties/enum -I ui/dock_widgets/property_sheet/properties/int -I ui/dock_widgets/property_sheet/properties/layer -I ui/dock_widgets/property_sheet/properties/linetype -I ui/dock_widgets/property_sheet/properties/linewidth -I ui/dock_widgets/property_sheet/properties/rect -I ui/dock_widgets/property_sheet/properties/rsvector -I ui/dock_widgets/property_sheet/properties/string -I ui/dock_widgets/views_list -I ui/dock_widgets/ucs_list -I ui/dock_widgets/workspaces -I ui/dock_widgets/cad -I ui/main -I ui/main/init -I ui/main/persistence -I ui/main/release_check -I ui/main/support -I ui/main/fontviewer -I ui/main/workspaces -I ui/view -I main -I main/console_dxf2pdf -I test -I plugins -I ../res -I ../res/arrows -I ../res/controls -I ../res/dxf -I ../res/gdt -I ../res/icons -I ../res/images -I ../../../Qt/6.9.0/gcc_64/include -I ../../../Qt/6.9.0/gcc_64/include/QtSvg -I ../../../Qt/6.9.0/gcc_64/include/QtPrintSupport -I ../../../Qt/6.9.0/gcc_64/include/QtWidgets -I ../../../Qt/6.9.0/gcc_64/include/QtGui -I ../../../Qt/6.9.0/gcc_64/include/QtNetwork -I ../../../Qt/6.9.0/gcc_64/include/QtCore -I ../../generated/librecad/moc -I ../../generated/librecad/ui -I ../../../Qt/6.9.0/gcc_64/mkspecs/linux-g++ -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../include/x86_64-linux-gnu/c++/14 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/backward -internal-isystem /usr/lib/llvm-18/lib/clang/18/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -std=gnu++1z -fdeprecated-macro -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcxx-exceptions -fexceptions -vectorize-loops -vectorize-slp -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/runner/work/LibreCAD/LibreCAD/out/2026-08-04-154929-5069-1 -x c++ ui/components/status_bar/lc_relzerocoordinateswidget.cpp
1/*******************************************************************************
2 *
3 This file is part of the LibreCAD project, a 2D CAD program
4
5 Copyright (C) 2024 LibreCAD.org
6 Copyright (C) 2024 sand1024
7
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License
10 as published by the Free Software Foundation; either version 2
11 of the License, or (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 ******************************************************************************/
22
23#include "lc_relzerocoordinateswidget.h"
24
25#include "lc_graphicviewport.h"
26#include "lc_linemath.h"
27#include "rs_graphic.h"
28#include "rs_graphicview.h"
29#include "rs_settings.h"
30#include "rs_units.h"
31#include "ui_lc_relzerocoordinateswidget.h"
32
33
34LC_RelZeroCoordinatesWidget::LC_RelZeroCoordinatesWidget(QWidget *parent, const char* name)
35 : QWidget(parent)
36 , ui(new Ui::LC_RelZeroCoordinatesWidget){
37 ui->setupUi(this);
38 setObjectName(name);
39
40 ui->lCartesianCoordinates->setText("");
41 ui->lCartesianCoordinates->setText("");
42
43 m_graphic = nullptr;
44 m_formatter = nullptr;
45}
46
47LC_RelZeroCoordinatesWidget::~LC_RelZeroCoordinatesWidget(){
48 delete ui;
49}
50
51void LC_RelZeroCoordinatesWidget::clearContent() const {
52 ui->lCartesianCoordinates->setText("0 , 0");
53 ui->lPolarCoordinates->setText("0 < 0");
54}
55
56void LC_RelZeroCoordinatesWidget::setGraphicView(RS_GraphicView *gv) {
57 if (m_graphicView != nullptr) {
1
Assuming the condition is false
→
2
←
Taking false branch
→
58 disconnect(m_graphicView, &RS_GraphicView::relativeZeroChanged, this, &LC_RelZeroCoordinatesWidget::relativeZeroChanged);
59 }
60 if (m_viewport != nullptr){
3
←
Assuming pointer value is null
→
4
←
Taking false branch
→
61 m_viewport->removeViewportListener(this);
62 }
63 if (gv == nullptr){
5
←
Assuming the condition is true
→
6
←
Taking true branch
→
64 setRelativeZero(RS_Vector(0.0,0.0), true); // in which system? ucs? wcs?
7
←
Calling 'LC_RelZeroCoordinatesWidget::setRelativeZero'
→
65 m_viewport = nullptr;
66 m_graphicView = nullptr;
67 m_graphic = nullptr;
68 m_formatter = nullptr;
69 }
70 else {
71 m_graphicView = gv;
72 m_graphic = m_graphicView->getGraphic();
73 m_viewport = gv->getViewPort();
74 m_formatter = m_viewport->getFormatter();
75
76 m_viewport->addViewportListener(this);
77
78 connect(m_graphicView, &RS_GraphicView::relativeZeroChanged, this, &LC_RelZeroCoordinatesWidget::relativeZeroChanged);
79 setRelativeZero(m_viewport->getRelativeZero(), true);
80 }
81}
82
83void LC_RelZeroCoordinatesWidget::relativeZeroChanged(const RS_Vector &pos) {
84 setRelativeZero(pos, true);
85}
86
87void LC_RelZeroCoordinatesWidget::showRelZero(const RS_Vector& rel) const {
88 if (m_viewport != nullptr) {
89 const RS_Vector ucsRelZero = m_viewport->toUCS(rel);
90
91 double x = ucsRelZero.x;
92 double y = ucsRelZero.y;
93
94 const double magnitude = ucsRelZero.magnitude();
95 double len = magnitude;
96 double angle = ucsRelZero.angle();
97 if (LC_LineMath::isNotMeaningful(magnitude)) {
98 len = 0;
99 angle = 0;
100 }
101
102 angle = m_viewport->toBasisUCSAngle(angle);
103
104 if (!LC_GET_ONE_BOOLRS_Settings::instance()->readBoolSingle("Appearance", "UnitlessGrid", true)) {
105 x = RS_Units::convert(x);
106 y = RS_Units::convert(y);
107 len = RS_Units::convert(magnitude);
108 }
109
110 // cartesian coordinates
111 const QString relX = m_formatter->formatLinear(x);
112 const QString relY = m_formatter->formatLinear(y);
113
114 ui->lCartesianCoordinates->setText(relX + " , " + relY);
115
116 // polar coordinates:
117
118 const QString rStr = m_formatter->formatLinear(len);
119 const QString aStr = m_formatter->formatRawAngle(angle);
120 const QString str = rStr + " < " + aStr;
121 ui->lPolarCoordinates->setText(str);
122 }
123 else {
124 ui->lPolarCoordinates->setText("");
125 ui->lCartesianCoordinates->setText("");
126 }
127}
128
129void LC_RelZeroCoordinatesWidget::setRelativeZero(const RS_Vector &rel, const bool updateFormat) {
130 if (m_graphic != nullptr) {
8
←
Assuming the condition is true
→
9
←
Taking true branch
→
131 if (updateFormat
9.1
'updateFormat' is true
) {
10
←
Taking true branch
→
132 m_formatter = m_viewport->getFormatter(); // fixme - fmt - most probably it should be removed
11
←
Called C++ object pointer is null
133 }
134 m_currentRelZero = rel;
135 showRelZero(rel);
136 }
137 else {
138 ui->lCartesianCoordinates->setText("");
139 ui->lPolarCoordinates->setText("");
140 }
141}
142
143void LC_RelZeroCoordinatesWidget::updateFormats() {
144 setRelativeZero(m_currentRelZero, true);
145}
146
147void LC_RelZeroCoordinatesWidget::onUCSChanged([[maybe_unused]]LC_UCS *ucs) {
148 setRelativeZero(m_viewport->getRelativeZero(), true);
149}