*) Implement a framework for "Data Load On Demand".
*) Implement FP_LIB_TABLE* PROJECT::PcbFootprintLibs(), which is the first
prototype.
This allows the project specific footprint tables to be part of the Module Editor
when invoked from Eeschema.
*) Implement a framework for "Data Load On Demand".
*) Implement FP_LIB_TABLE* PROJECT::PcbFootprintLibs(), which is the first
prototype.
This allows the project specific footprint tables to be part of the Module Editor
when invoked from Eeschema.
*) Eeschema can now show the footprint editor.
*) Eeschema can now invoke the footprint picker from the library part field editor.
*) KIWAY_PLAYER::ShowModal() takes aResultantFocusWindow that tells what window
to give the focus to. Required since frames are often near the top of the
hierarchy and they are invoked by a peer, not a parent.
*) Eeschema can now show the footprint editor.
*) Eeschema can now invoke the footprint picker from the library part field editor.
*) KIWAY_PLAYER::ShowModal() takes aResultantFocusWindow that tells what window
to give the focus to. Required since frames are often near the top of the
hierarchy and they are invoked by a peer, not a parent.
*) KIWAY_PLAYER::IsModal() is now a retained state, controlled by SetModal()
*) Fully re-work the KIWAY_PLAYER::ShowModal() to use a nested event loop.
*) Add support to DIALOG_SHIM for a "quasi-modal" dialog presentation and mode.
See top of dialog_shim.cpp about that for benefits and need.
*) You can now pick footprint from the schematic component field dialog, although
if you do this before you open the BOARD, you will only get the global footprint
libraries, not also the project specific ones. Opening the BOARD first avoids this
problem.
This is the first example of cross KIFACE invocation, it is also the first
instance of using a TOP_FRAME other than FRAME_PCB as the first thing. It works,
but it's missing support for opening the project specific table because
historically the FRAME_PCB did that. This is now starting to expose all the near
term needs for KIWAY_PLAYER <-> PROJECT interaction, independence and out of
sequence usage.
A fix for this will be coming in a few days.
However it mostly starts to show why the KIWAY is terribly useful and important.
*) KIWAY_PLAYER::IsModal() is now a retained state, controlled by SetModal()
*) Fully re-work the KIWAY_PLAYER::ShowModal() to use a nested event loop.
*) Add support to DIALOG_SHIM for a "quasi-modal" dialog presentation and mode.
See top of dialog_shim.cpp about that for benefits and need.
*) You can now pick footprint from the schematic component field dialog, although
if you do this before you open the BOARD, you will only get the global footprint
libraries, not also the project specific ones. Opening the BOARD first avoids this
problem.
This is the first example of cross KIFACE invocation, it is also the first
instance of using a TOP_FRAME other than FRAME_PCB as the first thing. It works,
but it's missing support for opening the project specific table because
historically the FRAME_PCB did that. This is now starting to expose all the near
term needs for KIWAY_PLAYER <-> PROJECT interaction, independence and out of
sequence usage.
A fix for this will be coming in a few days.
However it mostly starts to show why the KIWAY is terribly useful and important.
*) Rework the set language support, simplify it by using KIWAY. Now any major
frame with a "change language" menu can change the language for all KIWAY_PLAYERs
in the whole KIWAY. Multiple KIWAYs are not supported yet.
*) Simplify "modal wxFrame" support, and add that support exclusively to
KIWAY_PLAYER where it is inherited by all derivatives. The function
KIWAY_PLAYER::ShowModal() is in the vtable and so is cross module capable.
*) Remove the requirements and assumptions that the wxFrame hierarchy always
had PCB_EDIT_FRAME and SCH_EDIT_FRAME as immediate parents of their viewers
and editors. This is no longer the case, nor required.
*) Use KIWAY::Player() everywhere to make KIWAY_PLAYERs, this registers the
KIWAY_PLAYER within the KIWAY and makes it very easy to find an open frame
quickly. It also gives control to the KIWAY as to frame hierarchical
relationships.
*) Change single_top to use the KIWAY for loading a KIFACE and instantiating
the single KIWAY_PLAYER, see bullet immediately above.
*) Add KIWAY::OnKiwayEnd() and call it from PGM_BASE at program termination, this
gives the KIFACEs a chance to save their final configuration dope to disk.
*) Add dedicated FRAME_T's for the modal frames, so m_Ident can be tested and
these modal frames are distinctly different than their non-modal equivalents.
KIWAY_PLAYER::IsModal() is !not! a valid test during the wxFrame's constructor,
so this is another important reason for having a dedicated FRAME_T for each
modal wxFrame.
On balance, more lines were deleted than were added to achieve all this.
*) Rework the set language support, simplify it by using KIWAY. Now any major
frame with a "change language" menu can change the language for all KIWAY_PLAYERs
in the whole KIWAY. Multiple KIWAYs are not supported yet.
*) Simplify "modal wxFrame" support, and add that support exclusively to
KIWAY_PLAYER where it is inherited by all derivatives. The function
KIWAY_PLAYER::ShowModal() is in the vtable and so is cross module capable.
*) Remove the requirements and assumptions that the wxFrame hierarchy always
had PCB_EDIT_FRAME and SCH_EDIT_FRAME as immediate parents of their viewers
and editors. This is no longer the case, nor required.
*) Use KIWAY::Player() everywhere to make KIWAY_PLAYERs, this registers the
KIWAY_PLAYER within the KIWAY and makes it very easy to find an open frame
quickly. It also gives control to the KIWAY as to frame hierarchical
relationships.
*) Change single_top to use the KIWAY for loading a KIFACE and instantiating
the single KIWAY_PLAYER, see bullet immediately above.
*) Add KIWAY::OnKiwayEnd() and call it from PGM_BASE at program termination, this
gives the KIFACEs a chance to save their final configuration dope to disk.
*) Add dedicated FRAME_T's for the modal frames, so m_Ident can be tested and
these modal frames are distinctly different than their non-modal equivalents.
KIWAY_PLAYER::IsModal() is !not! a valid test during the wxFrame's constructor,
so this is another important reason for having a dedicated FRAME_T for each
modal wxFrame.
On balance, more lines were deleted than were added to achieve all this.
- Converted the Next/Prev C casts to static casts and removed the type
unsafe ones
- Splitted as virtual the VIA::Flip member instead of using RTTI
- Heavily refactored the 'unconnected track' cleanup routine
- Misc constification
- SEGVIA becomes VIA
- Drill size moved from TRACK to VIA
- Removed shape from TRACK, becomes ViaType in VIA
- GetTrace becomes GetTrack, for uniformity
- Some minor constification and typo fixes
(for instance, when a footprint from the currently edited board is loaded in the footprint editor, and when the board is cleared or reloaded)
In footprint editor, the net names are no more shown od modifiable (becuase the footprint editor does not know anything about net names.
This change should allow the changes planned in pcbnew.
*) void KIWAY::ExpressMail( FRAME_T aDestination, MAIL_T aCommand, const std::string& aPayload, wxWindow* aSource=NULL );
*) virtual void KiwayMailIn( KIWAY_EXPRESS& aEvent );
*) enum MAIL_T expansion into the brave new world if cross KIWAY_PLAYER communications.
Let the KIWAY_PLAYING begin.....
through well conceived mail from one KIWAY_PLAYER to another.
Get thinking now. Add a new MAIL_T value, then send ExpressMail(),
and receive it in KiwayMailIn(), it's that easy.
Eeschema, Pcbnew, and Cvpcb all run under the same process now,
FOR THE VERY FIRST TIME!
*) Added KIWAY::PlayerCreate(), PlayerClose(), and PlayersClose().
*) Factored FRAME_T into <frame_type.h> from ID_DRAWFRAME_TYPE.
*) Found that the following command line is helpful for collecting all the *.kiface
files into the <build>/kicad/ directory so that kicad can find them.
$ cp `find . -name '*.kiface'` kicad/
Maybe somebody will want to rework how the CMake files are organized so all
the binaries can go into the same place. See python-a-mingw-us.
*) This might fix the problem on the Mac where child process windows were not
coming to the front. See ->Raise() in kicad/mainframe.cpp.
*) You can set USE_KIFACE to 0 in kicad/mainframe.cpp to chain load child exes
instead of using the KIFACE modules directly, i.e. revert.
if it is running under single_top.cpp or under a project manager.
*) Test Kiface().IsSingle() when adding menus, some operations are not permitted
when running under a project manager and the KIWAY_PLAYER is pegged to a
specific project.
*) Implemented KIWAY::KiFACE() so it loads *.kiface files. They still have to be
in the same directory as the main *.exe launcher, so this presents some difficulty
when the binaries are not yet installed but rather the *.kiface files are still
in their original build directories. For today, I simply copied _pcbnew.kiface
to build/kicad/.
*) Add a test case to kicad/mainframe.cpp just to get an early peek at loading
_pcbnew.kiface under the C++ project manager. Got that working for one
specific invocation just for proof of concept. Surprise, it works.
was used locally. Then comment it out in favor of a newer strategy for
filling in nicknames in cvpcb.
Add MODULE* FootprintLoadWithOptionalNickname( const FPID& aFootprintId )
throw( IO_ERROR, PARSE_ERROR );
from code found elsewhere.
In PATCH_COMMAND, use patch instead of bzr patch if patch or patch.exe is found (mandatory to use msys2 because bzr patch does not work when using msys2)
Dialog Freeroute: if freeroute.jar is find in kicad binaries, it is run as a standard java application, not as web applcation
Very minor other fixes
FPC_(SMD_type)_footprintwizard.py wizard finished.
- resetting relative coordinates
- switching units
- not official: changing transparency for layers (works only for main layers, does not work on vias/pads/etc.)
Refactored code that handled zooming events.
Added PCB_RENDER_SETTINGS::Get/SetSketchMode().
PCBNEW_CONTROL reacts to hot keys changing display modes (sketch via/tracks, high contrast).
! The initial testing of this commit should be done using a Debug build so that
all the wxASSERT()s are enabled. Also, be sure and keep enabled the
USE_KIWAY_DLLs option. The tree won't likely build without it. Turning it
off is senseless anyways. If you want stable code, go back to a prior version,
the one tagged with "stable".
* Relocate all functionality out of the wxApp derivative into more finely
targeted purposes:
a) DLL/DSO specific
b) PROJECT specific
c) EXE or process specific
d) configuration file specific data
e) configuration file manipulations functions.
All of this functionality was blended into an extremely large wxApp derivative
and that was incompatible with the desire to support multiple concurrently
loaded DLL/DSO's ("KIFACE")s and multiple concurrently open projects.
An amazing amount of organization come from simply sorting each bit of
functionality into the proper box.
* Switch to wxConfigBase from wxConfig everywhere except instantiation.
* Add classes KIWAY, KIFACE, KIFACE_I, SEARCH_STACK, PGM_BASE, PGM_KICAD,
PGM_SINGLE_TOP,
* Remove "Return" prefix on many function names.
* Remove obvious comments from CMakeLists.txt files, and from else() and endif()s.
* Fix building boost for use in a DSO on linux.
* Remove some of the assumptions in the CMakeLists.txt files that windows had
to be the host platform when building windows binaries.
* Reduce the number of wxStrings being constructed at program load time via
static construction.
* Pass wxConfigBase* to all SaveSettings() and LoadSettings() functions so that
these functions are useful even when the wxConfigBase comes from another
source, as is the case in the KICAD_MANAGER_FRAME.
* Move the setting of the KIPRJMOD environment variable into class PROJECT,
so that it can be moved into a project variable soon, and out of FP_LIB_TABLE.
* Add the KIWAY_PLAYER which is associated with a particular PROJECT, and all
its child wxFrames and wxDialogs now have a Kiway() member function which
returns a KIWAY& that that window tree branch is in support of. This is like
wxWindows DNA in that child windows get this member with proper value at time
of construction.
* Anticipate some of the needs for milestones B) and C) and make code
adjustments now in an effort to reduce work in those milestones.
* No testing has been done for python scripting, since milestone C) has that
being largely reworked and re-thought-out.
! The initial testing of this commit should be done using a Debug build so that
all the wxASSERT()s are enabled. Also, be sure and keep enabled the
USE_KIWAY_DLLs option. The tree won't likely build without it. Turning it
off is senseless anyways. If you want stable code, go back to a prior version,
the one tagged with "stable".
* Relocate all functionality out of the wxApp derivative into more finely
targeted purposes:
a) DLL/DSO specific
b) PROJECT specific
c) EXE or process specific
d) configuration file specific data
e) configuration file manipulations functions.
All of this functionality was blended into an extremely large wxApp derivative
and that was incompatible with the desire to support multiple concurrently
loaded DLL/DSO's ("KIFACE")s and multiple concurrently open projects.
An amazing amount of organization come from simply sorting each bit of
functionality into the proper box.
* Switch to wxConfigBase from wxConfig everywhere except instantiation.
* Add classes KIWAY, KIFACE, KIFACE_I, SEARCH_STACK, PGM_BASE, PGM_KICAD,
PGM_SINGLE_TOP,
* Remove "Return" prefix on many function names.
* Remove obvious comments from CMakeLists.txt files, and from else() and endif()s.
* Fix building boost for use in a DSO on linux.
* Remove some of the assumptions in the CMakeLists.txt files that windows had
to be the host platform when building windows binaries.
* Reduce the number of wxStrings being constructed at program load time via
static construction.
* Pass wxConfigBase* to all SaveSettings() and LoadSettings() functions so that
these functions are useful even when the wxConfigBase comes from another
source, as is the case in the KICAD_MANAGER_FRAME.
* Move the setting of the KIPRJMOD environment variable into class PROJECT,
so that it can be moved into a project variable soon, and out of FP_LIB_TABLE.
* Add the KIWAY_PLAYER which is associated with a particular PROJECT, and all
its child wxFrames and wxDialogs now have a Kiway() member function which
returns a KIWAY& that that window tree branch is in support of. This is like
wxWindows DNA in that child windows get this member with proper value at time
of construction.
* Anticipate some of the needs for milestones B) and C) and make code
adjustments now in an effort to reduce work in those milestones.
* No testing has been done for python scripting, since milestone C) has that
being largely reworked and re-thought-out.
Removed EDIT_CONSTRAINT::Update() - replaced with resetting constraints.
EDIT_CONSTRAINT is stored in EDIT_POIN using boost::shared_ptr instead of pointer.
Added EDIT_LINE::GetEnd() & GetOrigin(). Overridden ApplyConstraint() for EDIT_LINE.
Side EDIT_POINTS for zones are drawn as circles.
* Make block rotate command honor the rotation angle setting. Thank you
Umesh Mohan <mohan.umesh@gmail.com> for the patch.
* Change block rotate undo command from UR_ROTATE to UR_CHANGED so consecutive
rotations do not lead to round errors and for proper undo in case the user
changes the rotation angle setting between block rotations.
* Handle different item global deletions correctly. No more removing of text
if graphics is selected.
* Layer settings are always obeyed for modules, zones, text, and graphics.
* Text will be removed from copper layers if all layers are selected or
according to the current layer.
* Added check boxes for "normal" and "locked" footprints to be consistent
with the naming for the track deletion options.
Fix also other very minor issues.
Realistic mode shows or not the copper thickness (depending on selected option in preferences) to speed up the screen redraw.
TOOL_EVENT message is supposed to contain string as parameter.
Added missing header for class_drawsegment.h (KiROUND).
Renamed SELECTION_TOOL::containsSelected() to SELECTION_TOOL::selectionContains().
* getpart.cpp: fix a potential bug on a translatable string with has requirements in spelling.
* fix bug #1066179
* kicad: fix erroneous labels in sub menus.
Renamed BOARD_CONNECTED_ITEM::SetNet() -> SetNetCode()
Added BOARD_CONNECTED_ITEM::GetNet() for accessing NETINFO_ITEM* of a given item.
Fixed module editor crash when launched to edit a module from a PCB.
Replaced some BOARD::FindNet( item->GetNet() ) calls with BOARD_CONNECTED_ITEM::GetNet().
Renamed BOARD_CONNECTED_ITEM::SetNet() -> SetNetCode()
Added BOARD_CONNECTED_ITEM::GetNet() for accessing NETINFO_ITEM* of a given item.
Fixed module editor crash when launched to edit a module from a PCB.
Replaced some BOARD::FindNet( item->GetNet() ) calls with BOARD_CONNECTED_ITEM::GetNet().
- VIEW_ITEM::ViewUpdate() does not update items immediately. Now it marks them to be updated and the real update occurs on the next rendering frame.
- VIEW::InvalidateItem() made private.
- VIEW_LAYER::enabled -> visible
- Some functions moved to header files.
Most of the GAL tools are activated by corresponding buttons on the right toolbar.
Removed menu entry for PNS router (as it is activated as the usual "Add track" tool).
Scripting: fix compatibility current pcbnew version in 2 examples and the default extension of board files in board.i (was .kicad_brd, now is .kicad_pcb)
Fixed case for the footprint legacy plugin when added module's do not have set parent (BOARD).
Added copyright notice for pcbnew/class_netinfolist.cpp (feel free to correct, it is just copied from corresponding header file).
Added DIMENSION::SetOrigin(), DIMENSION::SetEnd(), DIMENSION::GetOrigin(), DIMENSION::GetEnd(), DIMENSION::GetHeight().
Fixed flipping for DIMENSION class.
Added an information that helps to understand roles of the points in the DIMENSION class.
Some minor changes to PCB_PAINTER (mainly using const COLOR4D& for taking the result of GetColor() function).
Add a workaround to fix a new bug in wxWidgets 3.0 ( Windows specific ) which shows icons only with a size = 16x16 in menus which have attribute wxITEM_CHECK
Modification point is selected basing on the number of selected items.
Rotation angle setting (Preferences->General) is taken into account while rotating.
- pcbnew.InteractiveSelection.Single for selecting a single item
- pcbnew.InteractiveSelection.Clear for clearing the selection
Made SELECTION_TOOL::clearSelection private.
Add missing calls to Show( false ) to some main frames (Kicad, eeschema, gerbview), to force config saving when closing these windows.
Code cleanup and minor coding style fixes in footprint_wizard_frame
Fixed crashes of ratsnest when a pointer for an item has changed after undo/redo operations.
Vias are properly removed from ratsnest (pcbnew/class_board.cpp).
RN_DATA::Update()/AddSimple() take BOARD_ITEM* as the parameter (instead of being split to versions with BOARD_CONNECTED_ITEM* and MODULE*), to make the code look clearer.
Now, nets are saved with consecutive net codes (both modern & legacy plugins).
Zones are saved together with their nets, without depending on the fact if there are any pads with such net. Therefore validation of zone net names was removed (pcbnew/class_board.cpp).
Performed tests:
- Changed a pad's net name from empty to existent - ok, name was changed.
- Changed a pad's net name from empty to nonexistent - ok, error message is displayed, net name stays empty.
- Changed a pad's net name from existent to empty - ok, net name became empty
- Changed a pad's net name from existent to nonexistent - ok, error message is displayed, net name is not changed.
- Drawn a zone that belongs to a net, then modified schematics so the net does not exist anymore. After reloading the net list, all pads/tracks are updated. Zones still belongs to the net that does not exist in the schematic (but still exists in .kicad_pcb file). After running DRC, the zone becomes not filled.
- Undo & redo affects assignment of a polygon to a specific net (you may change net of a polygon, refill it and undo/redo the changes).
- KiCad s-expr & legacy, Eagle, P-CAD boards seem to load without any problem (they also contain correct net names assigned to the appropriate pads). All types of board file formats were loaded, then saved in sexpr format and reopened with a KiCad built from the master branch (without my modifications).
- A few boards were also saved using the legacy format and were opened with the master KiCad without any issues.
- Change a net name for a pad, restore with undo/redo - ok
- Remove everything, restore with undo - ok
- Remove everything, reload netlist - ok
Differences observed between files saved by the master branch KiCad and this one:
- list of nets are not saved in any particular order, so net codes may differ
- the default net class does not contain the unconnected net
GetNet() refers to the net code stored in the NETINFO_ITEM. SetNet() finds an appropriate NETINFO_ITEM and uses it.
Removing GetNet() & SetNet() (and the whole net code idea) requires too many changes in the code (~250 references to the mentioned functions).
BOARD_CONNECTED_ITEMs by default get a pointer to NETINFO_ITEM that stores unconnected items. This requires for all BOARD_CONNECTED_ITEMs to have a parent (so BOARD* is accessible). The only orphaned item is BOARD_DESIGN_SETTINGS::m_Pad_Master, but it does not cause any issues so far.
Items that do not have access to a BOARD (do not have set parents) and therefore cannot get net assigned, by default get const static NETINFO_LIST::ORPHANED.
Performed tests:
- loaded .kicad_pcb, KiCad legacy board, Eagle 6.0 board, P-CAD board - all ok
- load a simple project, reload netlist after changing connections in eeschema - ok
- save & reload a board - ok, but still contain empty nets
- remove everything, restore with undo - ok
- remove everything, reload netlist - ok
- changing net names (all possibilites: empty->existing, empty->not existing, existing->empty, existing->not existing) - all ok
- zones: when net is changed to a net that does not have any nodes besides the zone itself, it does not get filled
- ZONE_CONTAINER::m_Netname field
- ZONE_CONTAINER::SetNetName()
- ZONE_CONTAINER::SetNet() [it uses the one in BOARD_CONNECTED_ITEM]
- ZONE_CONTAINER::GetNetName() [instead BOARD_CONNECTED_ITEM::GetNetname is used]
- ZONE_CONTAINER::SetNetNameFromNetCode()
Performed tests:
- Drawn a zone that belongs to a net, then modified schematics so the net does not exist anymore. After reloading the net list, all pads/tracks are updated. Zones still belongs to the net that does not exist in the schematic (but still exists in .kicad_pcb file). After running DRC, the zone becomes not filled.
- Undo & redo affects assignment of a polygon to a specific net (you may change net of a polygon, refill it and undo/redo the changes).
D_PAD::GetNetname() and D_PAD::GetShortNetname() were moved to BOARD_CONNECTED_ITEM. Now they use the net name stored in NETINFO_ITEM.
Moved some one-line functions from class_board_connected_item.cpp to class_board_connected_item.h.
Added a copyright notice, moved Doxygen comments from class_board_connected_item.cpp to class_board_connected_item.h.
I have some doubts if changes introduced pcbnew/dialogs/dialog_pad_properties.cpp do not break anything, but I could not find a test case that breaks the pcbnew.
Performed tests:
- changed pad's net name from empty to existent - ok, name was changed
- changed pad's net name from empty to nonexistent - ok, error message is displayed, net name stays empty
- changed pad's net name from existent to empty - ok, net name became empty
- changed pad's net name from existent to nonexistent - ok, error message is displayed, net name is not changed
- (re)reading netlists, including net changes - fine, changes are applied, but empty nets are still kept
- loaded pcbnew/pcad2kicadpcb_plugin/examples/CK1202_V1.pcb to test P-CAD import plugin - ok, net names are correct
- imported an Eagle 6.0 board (Arduino Uno; http://arduino.cc/en/uploads/Main/arduino_Uno_Rev3-02-TH.zip) then saved in .kicad_pcb format and reloaded - ok, net names are correct
- saved demos/video/video.kicad_pcb in legacy format and then loaded it again - ok, net names are correct
Net codes are updated upon net list update. (BOARD::ReplaceNetlist())
Added in some places (mostly class_board.cpp) pad->SetNet() calls to synchronize net codes.
On creation of NETINFO_LIST, the first NETINFO_ITEM is added (the unconnected items net).
Removed COMPONENT_NET::m_netNumber, as it was not used anywhere.
Added an assert to D_PAD::GetNetname(), checking if net code and net name is consistent for unconnected pads. Added an assert for NETINFO_LIST::AppendNet() to assure that appended nets are unique.
It seems that at this point:
- Updating net lists works fine. The only difference between the file ouput is that after changes it contains empty nets as well.
- Nets are not saved in the lexical order. Still, net names and net codes are properly assigned to all items in the .kicad_pcb file. It is going to be addressed in the next commit. I believe it should not create any problems, as pads are sorted by their net names anyway (NETINFO_LIST::buildPadsFullList())
Performed tests:
- Created a blank PCB, saved as pic_programmer.kicad_pcb (from demos folder). Updated net lists. .kicad_pcb file (comparing to the results from master branch) differ with net order (as mentioned before), net codes and timestamps.
- Removed some of components from the above .kicad_pcb file and updated net lists. Modules reappeared. .kicad_pcb file differs in the same way as described above.
- Trying to change a pad net name (via properties dialog) results in assert being fired. It is done on purpose (as there is a call to GetNetname() and net name and net code do not match). This will not happen after the next commit.
- Prepared a simple project (starting with schematics). Imported net list, changed schematic, reimported net list - changes are applied.
- Eagle & KiCad legacy boards seem to load without any problem.
NETINFO_ITEM::m_Net and NETINFO_ITEM::m_Netname are const.
Changes to be verified:
- pcbnew/minimun_spanning_tree.cpp: It segfaults is m_Size == 0
- pcbnew/exporters/export_gencad.cpp: I removed the SetNetname() call, as it changes only the unconnected net and in the next line it returns if the net is unconnected. Still, I wonder if name for the unconnected net matters. What about tests that check if a net name is empty to decide if it is unconnected net or not.