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QCAD - 2D CAD System.

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IDCategoryTask Type  descSeveritySummaryStatusProgress
1915QCAD (main)SuggestionLowViewport does not rotate view-port when changed in pape...Assigned
Task Description

To reproduce

1. Select a new view-port in model-space
2. Select the appropriate paper-space
3. When the paper space opens change the angle of the viewport.


The object in the viewport changes but the viewport itself remains unchanged


That both the view-port and the object changes angle as the angle is updated


If you abort the placement (but keep the angle) and go back to model-space and then redo the operation the view-port is rotated along the angle. It seems that the viewport only picks up the initial angle once the paper-space is open and ignores any changes thereafter


1. Select the view-port per normal in model-space
2. Open the paper-space and set the wanted angle but do not place the view-port in paper space
3. Abort the placement on paper-space and redo the whole operation

Once the paper space is opened again the view-port will have the chosen angle

 1925 QCAD (main)SuggestionLow Poly Ref Points manipulation that generates null-segmen ...Closed
Task Description

Win7pro 32bit Wininstaller Qcadpro 3.23.0

With a polyline.

Select the poly.
Pick any reference point of a vertex.
Place it on any of its neighboring vertex reference points.

A null-segment is created.
The placement can not be undone by re-picking the reference point.
Can be Undone/Redone.
The action can result from editing the vertex coordinates.
When exploding null-entities are created.

This action should delete:
- if the target is next: the picked vertex. (incl. start or end-1)
- if the target is prior: the targetted vertex. (incl. start or end-1)
- if the target is and next and prior: both the prior and the picked vertex.

As the user intentionally places any vertex reference points on:
- any excluding its neighbors:
→ the intented nature is ‘Self-Touching’, ‘Self-Crossing’ or ‘Trace-Back’.
- any of its neighbors:
→ the intention is to delete the segment(s).


2072QCAD (main)SuggestionLowInserted and flipped block mirrors text and dimAssigned
Task Description

Text and/or DIM used in blocks will be mirrored if inserted with a vertical/horizontal flip option.

Text/DIM which was successfully used in previos QCAD versions are now mirrored if they are loaded in the current version.

Version 3.23.0 doesn’t shows this behavior.


 2075 QCAD (main)SuggestionLow Draw order bug after insert bit map Closed
Task Description

First post, so please excuse if I missed some forum rules etc...

I insert bit maps and trace over them to create DXF files for laser cutting burnout templates. If the edge of the bit map is coincident with a line I have drawn, it is not possible to select the line for offsetting, trimming etc. This is regardless of the draw order or handle number. It seems to happen most if the edge of the image and line are coincident with the X or Y origin. I also use fairly fat lines to make it easy to see. My default line width is 1mm. Not sure if that affects selection or not, but fatter lines don’t help the issue at hand.

Steps to reproduce...
insert bitmap at 0,0
draw horizontal and vertical lines starting at 0,0. (my lines are usually longer than the edges of the bitmap.
try to select one of the lines for offsetting. (Select the line in the area of the bitmap. There is no problem selecting the line where it extends past the edge of the bitmap.)

It does not matter if I insert the bitmap first and then draw lines, or draw lines first, insert bitmap and then change the draw order so the lines are on top. It is also not consistent on which axis is affected. It is usually both X & Y, but sometimes just one or the other.

Workaround is select the bitmap, then move it by 0.001 in any direction. Now the edges are no longer coincident and you can select your lines. The alternate workaround is to insert the image on another layer and then turn that layer off when you need to select a line on the edge of the bitmap.

 1324 QCAD/CAMSuggestionVery Low Confusing Copy / Move option Closed
Task Description


Using the Copy and Move command the [ ] Use current layer and attributes’ is confusing.

Perhaps [ ] change copy /moved set to current layers and attributes. is more suitable.

 1375 QCAD (main)SuggestionVery Low Install in hidden folder Closed
Task Description

After each update, I add a dot before the ~user/opt folder (and in the program launcher) created by QCAD to unclutter my file manager’s appearance. Would be easy, I think, to make the installer put the program directly in ~user/.opt, and nobody would miss that folder while browsing through daily used files.

And what about installing the program as root, so all users of a computer could use it without personal installs, and only personal setting files created by users would be kept in ~user/.opt/qcam.


 1607 QCAD (main)SuggestionVery Low Indent 'Spline Segments:' in explode preferences Closed
1 Task Description

 FS#1604  was issued because of non-intuitive hierarchy of the preferences for the Explode function.
The task comment recieved explains the funcionallity in details not found elsewhere.

Indentation of the phrase ‘Spline Segments:’ suggest hierarchy.
Graying out the drop down box for the number of spline segments establish hierarchy.

 1759 QCAD (main)SuggestionVery Low Modify // .... selection of entities on locked layer al ...Closed
Task Description

Without any selection.
Entities on a locked layer can be selected after choosing:

Asumed wrong
- Modify DI
- Modify
- Modify D3
- Modify

- Modify RM
- Modify
- Modify RN Less severe
- Modify
- Modify OH
- Modify


2011QCAD Community EditionSuggestionVery LowUpdate QCAD CE SpatialIndex module to latest versionAssigned
Task Description

Building with the bundled version, 1.8.5, works fine.

When I try to build using the system version, which for Mageia Cauldron is 1.9.3, the build fails.


Here is the current spec file for version

It looks like qcad is incompatible with versions above 1.8.5.

Are there plans to port to the new version?

Thanks in advance.

 26 QCAD (main)ReleaseLow Release Tasks Closed
Task Description


  • developer menu
  • tests scripts

Adjust Version


  • “About” dialog (automatic)
  • reference manual: support/doc/manual/about.txt / about_de.txt
  • scripts/splashscreen.png
  • scripts/Tools/LibraryBrowser/splashscreen.png
  • src/core/RVersion.h
  • library browser DB file name in LibraryBrowser.js, LibraryBrowser.getDbFile()


  • Linux Deployment (support/deployment/linux)
    • deploy.sh: change RUN_FILE, TARGZ_NAME
    • setup.sh: change SETUP_INSTALLPATH
  • Mac OS X:
    • deploy.sh: DMGNAME
    • src/run/Info.plist
    • src/run/InfoLibraryBrowser.plist
    • src/run/InfoTrial.plist
  • Windows:
    • qcad_installer.nsi
    • qcad_trial_installer.nsi

Don't forget

  • file “readme.txt”
    • adjust “Known limitations”
  • update QCAD Application Framework API
  • svn tag revision
  • add version to bug tracker

Check List

  • run automatic tests
  • designer plugins qwebkit (libqwebview.so)
  • text with CAD font
  • hatches
  • insert image
  • user interface translations
  • help (Qt Assistant client)
    • help translations
  • library browser
    • drag-n-drop insert from library browser
  • help - contents
  • help - check for updates
  • templates
  • initial launch (without ini file)
  • printing
  • PDF generation
  • SVG export
  • loading / saving files
  • Help - Show Readme (can file readme.txt be found?)
  • Qt libraries not in debug mode, QCAD binary does not link against debug Qt libraries
  • command line tools


  • Mac OS X Snow Leopard & Lion (10.6 & 10.7)
  • Mac OS X Leopard x86 (10.5)
  • Mac OS X Leopard ppc (10.5)
  • Linux 32bit
  • Windows 32bit

Plus maybe later:

  • Mac OS X Tiger (10.4)
  • Linux 64bit
  • Windows 64bit
 1328 QCAD (main)ReleaseLow Windows 64bit install dir Closed
Task Description

I only noticed today (perhaps they were available earlier?) that there are 64 bit binaries for windows; I suppose these are true 64 bit.

Yet, the installer prompts me to put them into “Programs (x86)”, where all the 32bit software lives, I guess - this seems to be a pure convention though, the application runs just fine.

Maybe the reason is, that the 32bit version was installed before; Maybe it should change? Maybe it should stay, so that there are not two?

1954QCAD/CAMReleaseLowRevised PWM Post ProcessorAssigned
Task Description

Hallo Andrew,

I have revised the PWM Post Processor to Revision D.

 137 QCAD (main)RefactoringLow SVG Export precision Closed
Task Description

In files exported with the (even PG) exporter I sometimes see values like these: 334.99999999999994 or 570.0000000000001 and very often 12 digits of precision.

To safe on file size, I suggest, that QCAD rounds values on SVG export to eg. three places. When viewed in an ordinary web browser, that will result in a precision of 1 inch / 96dpi / 1000 = 0.00026mm, not? Ends should still meet.

 138 QCAD (main)RefactoringLow SVG Export entity properties "By Layer" and "By Block" Closed
Task Description

If I understand correctly, SVG export uses svg groups to keep QCAD block entities. This in itself is very useful. There is no way to correctly keep layer information, as QCAD blocks can contain elements on different layers, while SVG only knows about groups. That is a deficiency of SVG.

To save on file size, there was some potential to get rid of ever repeating same attributes on entities, eg: style=”stroke:#000000;stroke-width:0.25;stroke-dasharray:2.16,1.08”

To optimize “By Block” is easy: just set the attribute on the SVG group, and omit on below entities styled “By Block”.

To optimize “By Layer” is a little more involved, but might be solved by using css:
- Create a class by the name of the Layer
- add the class attribute to elements styled “By Layer”

Then only individually styled entities would get a style attribute, and filesize of SVG could be halved in most cases.

This just an idea :) Having written this, I now realize, that QCAD can style weight, pattern, color each extra, so the optimazition could only be applied to entities, where everything is “By Layer” or “By Block”. But that should be the case most of the time.

 146 QCAD (main)RefactoringLow cloning entities: optional ID cloning Closed
Task Description

add parameter to REntity::clone to allow cloning without cloning object ID.

 610 QCAD (main)RefactoringLow replace QMdiArea with QTabBar and QWidgetStack Closed
Task Description

QMdiChild widgets in an QMdiArea receive repaint and mouse events even if they are not active which slows down the user interface when having multiple MDI children open.

Long term, QMdiArea might have to be replaced with something else.

 1056 QCAD (main)RefactoringVery Low Dead and wrong code in RSPlatform.cpp Closed
Task Description

I am considering pushing the following diff:

--- a/src/core/RSPlatform.cpp
+++ b/src/core/RSPlatform.cpp
@@ -205,25 +205,6 @@ int RS::getCpuCores() {
     cores = sysinfo.dwNumberOfProcessors;
 #elif defined(Q_OS_UNIX)
     cores = sysconf( _SC_NPROCESSORS_ONLN );
-#elif defined (Q_OS_MAC) || defined (Q_OS_BSD4) || [...]
-    nt mib[4];
-    size_t len;
-    /* set the mib for hw.ncpu */
-    mib[0] = CTL_HW;
-    mib[1] = HW_AVAILCPU; // alternatively, try HW_NCPU;
-    /* get the number of CPUs from the system */
-    sysctl(mib, 2, &cores, &len, NULL, 0);
-    if (cores < 1) {
-        mib[1] = HW_NCPU;
-        sysctl( mib, 2, &cores, &len, NULL, 0 );
-    }
-#elif defined(Q_OS_HPUX)
-    cores = mpctl(MPC_GETNUMSPUS, NULL, NULL);
-#elif defined(Q_OS_IRIX)
-    cores = sysconf( _SC_NPROC_ONLN );

(truncated list to manage size)

I see that most of this was put in there as a kind of a note-to-self originally, however _SC_NPROCESSORS_ONLN is implemented by every realistically possible targets anyway, so for all practical purposes, this is dead weight.

A couple of questions remain, though:

  • #ifdef Q_OS_WIN32 should probably be Q_OS_WIN, so as to include win64 as well.
  • Assuming the real purpose for this function is to determine how many parts a particular task is to be split into in the future, if and when QCAD gets the need to split expensive tasks among multiple CPUS, “core” probably shouldn’t be static - CPUs are hot-pluggable today, and while one probably doesn’t do that on a laptop, it’s not unfeasible in, say, a VDI environment.


 6 QCAD (main)Performance IssueMedium Auto snap near splines Closed
Task Description

Move cursor near spline, e.g. when drawing line with auto snap active.

 1123 QCAD (main)Performance IssueMedium Hatch in block causes performance problem Closed
Task Description

Hatches in blocks cause poor performance while (auto-)snapping.
The lines that make up those hatches are included in the search for intersection points which is not desirable.

 1970 QCAD/CAMPerformance IssueMedium Drill Toolpath Workaround Closed
Task Description

Hallo Andrew,

Fiddling with the drill-toolpath error, a solution seems to be to add the drill location as a ‘single point’ in the ‘source’ sublayer. I am using this as a Bug Work Around.

 112 QCAD (main)Performance IssueLow Slow startup because of Library Browser Closed
Task Description
  • initial start (no library browser DB present)
  • Linux vostro #1 SMP PREEMPT 2011-04-25 21:48:33 +0200 i686 i686 i386 GNU/Linux
  • DWG / DXF files: 79
  • SVG files: 684
  • RDF files: 729
real    1m37.298s
user    1m35.101s
sys     0m0.806s
 169 QCAD (main)Performance IssueLow Image preview slow Closed
Task Description

Preview when inserting image slow

 201 QCAD (main)Performance IssueLow unable to move/dock command line Closed
Task Description

Cannot move/dock command line to right hand pane!



 233 QCAD (main)Performance IssueLow Slower selection / manipulation Closed
Task Description

Slower selection / manipulation compared to QCAD 2.

 244 QCAD (main)Performance IssueLow snap auto Closed
Task Description

Snap defaults to auto. Auto snap gets slow in areas where there are many places it can snap to.

 288 QCAD (main)Performance IssueLow opening dwg file takes very long [improved] Closed
Task Description

Opening a 4 MB dwg file results in no-response for about five minutes. Opening the same file with DraftSight takes less than five seconds.

 360 QCAD (main)Performance IssueLow Application Preferences - Shortcuts (slow) Closed
Task Description

In the “Application Preferences”-menu a click on submenu “Shortcuts and Commands” freeze the application for a view minutes.

 391 QCAD (main)Performance IssueLow Complex blocks: moving with drag and drop shows whole b ...Closed
Task Description

Complex blocks: moving with drag and drop shows whole block as preview (slow)

 673 BookPerformance IssueLow Library - Symbols Closed
Task Description

Library - Architecture is showing only four (4) symbols:
“ffl, north, uparrow and winv”.
Is this correct?

Thanks in advance



728QCAD (main)Performance IssueLowSlow loading of drawing with many block insertsAssigned
1 Task Description

Slow loading of drawing with huge number of block inserts (more than 10000).

 914 QCAD (main)Performance IssueLow Invert selection: poor performance Closed
Task Description

Inverting the current selection is significantly slower than select all, deselect all or other selection tools.

 1029 QCAD (main)Performance IssueLow Selecting many entities: poor performance Closed
1 Task Description

Selecting a great number of entities (>10000) can be slow, likely due to updating the property editor.

 1052 QCAD (main)Performance IssueLow (Isometric) projection: poor preview performance Closed
Task Description

Preview performance can be improved by projecting only once and then moving / pasting the projection.

 1115 QCAD (main)Performance IssueLow Windows: slow file dialogs Closed
Task Description

Windows 7 Professional 64bit SP1

File > Open shows empty dialog for 1 minute, then shows dialog contents.

 1305 dxflibPerformance IssueLow Bottleneck in DL_Dxf::toReal caused by std::locale Closed
Task Description

Loading any larger dxf file takes very long because of this line:

The call to std::locale is very slow. File-loading can be speed up by approximately factor 5 times on my system when replacing it. I just removed that line and instead added the following in DL_Dxf::in so it is changed only once per file:

std::locale oldLocale = std::locale::global(std::locale(”C”)); // use dot in numbers
while (readDxfGroups(fp, creationInterface)) {}

 1315 QCAD (main)Performance IssueLow Snap > Auto Snap: slow when snapping to complex polylin ...Closed
Task Description

See also:

 1497 QCAD (main)Performance IssueLow Autosnap: hangs with very complex splines Closed
Task Description

Splines with hundreds of control points or fit points can cause hangs when using auto snap near them.

 1606 QCAD (main)Performance IssueLow Selecting 'Draw Order' halts system temporary Closed
Task Description

Merely clicking on ‘Draw Order’, and usualy unintended, halts the system for several seconds up to several tens of seconds.

Intel(R) Core(TM) i7-2600K CPU @ 3.40Ghz
4,00 GB RAM installed 3,49 GB usable
32-bit Operating System
Windows 7 Professional SP1

 1610 QCAD/CAMPerformance IssueLow Switching from one drawing to another slow Closed
Task Description

When switching from one drawing to another, the 3D view is updated which can be slow, especially for drawings with many text entities.

See also:

 1662 QCAD (main)Performance IssueLow Select > Select Contour: slow for complex drawings Closed
Task Description


when working with files containing many not connected elements (non-poly-line elements) a double click can cause a coffee-break easily. The search for connected entities easily takes over 5 minutes on an up to date machine ([email protected]) with files that are pretty standard in size (2 or 3 MB file size ascii dxf). Adding an interruption-method would be suitable (for example by pressing escape).

attached a file with a polyline of 13000 entities and a second file with just everything duplicated. When exploding the polyline and double clicking an element it takes quite a while until all elements are selected. (this is not an extreme example, I had sometimes 10 minutes of waiting with slightly bigger files, accidently double clicking something).

also an improved algorithm for the search would help to speed up the selection. (e.g. divide the area in smaller parts, do the search there, or an option to search only in the visible view port of the document)


 1693 QCAD (main)Performance IssueLow Formatted text is not correctly displayed Closed
1 Task Description

Texts justified and/or formatted in dxf or dwg files generated by Autocad not presented correctly when the file is opened by QCad, follow file for verification.

1801QCAD (main)Performance IssueLowlow perfomance in paper space and viewportsAssigned
Task Description

Improving the performance of the exceptional use of the processors when switching from the model to the paper space (testing with the attached file) the functionalities of the commands for the viewports are too low in the paper space.

 1984 QCAD (main)Performance IssueLow Block > Create Block from Selection: Slow for large num ...Closed
Task Description

See also:

2063QCAD (main)Performance IssueLowBad performance while zooming inside layout block with ...Assigned
1 Task Description

Zooming in and out is lagging to the point of unusable. This is happening in a layout block with the cursor pointing inside geometry with hatches. When the cursor is pointing outside the geometry zooming works as expected.
The attached file has a very simplified testcase that shows this problem almost in the same way as a more complex drawing with multiple layers and hatches.

edit: I also attached the more complex drawing because it is a bit unclear to me where the lagging stops. Outside the viewport or outside the paper.

I just noticed the selection box has the same problem!

2021QCAD (main)Performance IssueVery LowCannot work with big dwg filesAssigned
Task Description

Openning a big file or doing any action in it, takes minutes to load.
Even dragging the scrollbar slightly left or right, takes mintues to redraw the canvas again, which makes QCAD un-usable for professional use.
Is there a way to make QCAD usable, after loading completed:
- Like suppressing edit until user says so,
- or taking snapshots of rendered canvases to another file and use it, as windows uses thumb.db ( for negative latency :P )

PS: I wish I could help a bit, but my hand are tied. I am just a java freak, I am opt to any idea of porting it to java, if she is still alive.

Tuğalsan Karabacak
EEE, MSc Mobile Comp & App, IWE

 13 QCAD (main)Feature RequestHigh File: Close Closed
Task Description

Ask if document modified

 30 TestsFeature RequestHigh UiTests: update required file Closed
1 Task Description

add “update required file” to the context menu shown in the result window

  1. copy the actual file to the directory “required”
  2. run the test again
  3. test result should be “passed” now
 1966 dwg2pdfFeature RequestHigh Add a new option to convert all blocks to pdfs Closed
Task Description

Relative to https://www.ribbonsoft.com/bugtracker/index.php?do=details&task_id=1965

I suggest that if dwg2pdf have an new options that can convert all the blocks to pdf.
Now, I need to know all the block names before converting.

But if I put qcad on server, the computer won’t know how many blocks in the dwg and their names.

For examples:

There are 4 blocks in dwg.block1, block2, block3, block4

Command line: ./dwg2pdf -block-all path

Result: block1.pdf block2.pdf block3.pdf block4.pdf

 1968 dwg2pdfFeature RequestHigh Add a -max-lineweight option Closed
Task Description

Good afternoon! I have a suggestion.

Relative to https://www.ribbonsoft.com/bugtracker/index.php?do=details&task_id=1964

I did not find option -max-lineweight.
Please see the attachment.

 14 QCAD (main)Feature RequestMedium File: Print Preview Closed
Task Description


  • re-enable auto fit
  • re-enable center


  • option to not print empty pages


  • PDF export
  • scale factor
  • position
  • paper size
  • paper orientation
  • toggle portrait / landscape in toolbar
  • choose paper format in toolbar
  • multiple pages with margin and stitch marks
  • zoom to all pages
  • color mode (color, gray scale, black white)
  • scale combo box in drawing preferences empty
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