Bus upgrades: core new connectivity code
Bus upgrades: eeschema integration and modifications
Bus upgrades: eeschema dialogs
Bus upgrades: netlist export
Bus upgrades: file format changes
When loading a part in libedit, also transfer certain screen
settings to the incoming SCH_SCREEN, from the current
SCH_SCREEN.
Currently, the grid settings are transferred, but this could
also do other settings if needed.
Also remove some duplicate commentary and mention why the
grid is set in a SCH_SCREEN even though the BASE_SCREEN ctor
sets the same default.
Fixes: lp:1815108
* https://bugs.launchpad.net/kicad/+bug/1815108
The standard DIM() macro was not typesafe as it happily deferred errors
to runtime that can be caught at compile time. Replacing it with a
generic C++11 constexpr allows for typecasting, comparison and compile
time error checking.
When expanding the drag item to allow corners, we accidentally picked up
other items in the list. This limits the items that can be dragged to
only those that are explicitly in the draggable list.
A side effect of this commit is that when converting from move to drag
(with tab), items not in the draggable list will be left in place.
Fixes: lp:1787966
* https://bugs.launchpad.net/kicad/+bug/1787966
Previously, when creating a new instance of a sheet, the full set of references
was cleared.
Moreover, if this sheet has sub-sheets, the annotation was incorrectly handled
Now only (and all) new sheet path(s) created have a reference cleared, as expected.
(new sheet paths can be more than one, if the new instance of the sheet has sub-sheets)
Fixes: lp:1789048
https://bugs.launchpad.net/kicad/+bug/1789048
It was only a overzealous (in this case) assert, with no issue.
The fix avoid calling DeleteAll() when there is nothing to delete.
Fixes: lp:1787810
https://bugs.launchpad.net/kicad/+bug/1787810
Allows buses to acquire junctions based on their connections. Buses
can only have junctions with other buses. Also allows buses to be
draggable junctions for collections
This adjusts the selection addition criteria for
blocks to allow items such as labels to connect to
lines not at the endpoints. It also uses the same
logic to correctly gather bus-wire, bus-bus entries.
Fixes: lp:1738941
* https://bugs.launchpad.net/kicad/+bug/1738941
Pins are weak_ptrs to the library, so they require a lock() before
accessing. This imposes a performance hit on fast loops that access
the pin list repeatedly. This patch caches the pin position locally
for each component, updating only when needed.
Fixes: lp:1737363
* https://bugs.launchpad.net/kicad/+bug/1737363
Fixes the connection display and dragging behavior of wires,
busses and their entries.
The implemented drag logic is:
-busses and bus-bus entries drag each other when connected at endpoints
-wires and wire-bus entries drag each other when connected at endpoints
-entries do not drag wires or busses when connected to wire middles
-wire-bus entries do not drag busses
The implemented connection logic is:
-bus-bus entries connect busses to busses but not wires
-wire-bus entries connect wires to busses but not wire to wires or
busses to busses
BreakSegment now breaks a known segment and BreakSegments
breaks all segments. This allows functions to break a
segment without needing to iterate through the whole list.
Dragging a full line that is connected to a component
now drags the component as part of the block, maintaining
connections.
Fixes: lp:1167714
* https://bugs.launchpad.net/kicad/+bug/1167714
All of the schematic object load and save code is implemented in the
legacy schematic plugin so it is no longer required.
Remove unused file with old schematic file loader.
Doxygen comment cleaning.
Use the legacy plugin schematic loader in the sheet edit and append
schematic code paths.
Check for fully qualified LIB_ID objects (must have library nickname)
when loading existing schematics when edit sheets.
Rewrite append schematic feature to handle import issues rather than
change the name and file name of all of the sheets in the imported
schematic. This includes the following:
- Load the schematic into a temporary SCH_SHEET object.
- Make sure the imported schematic does not cause any hierarchy
recursion issues.
- Verify the imported schematic uses fully qualified #LIB_ID objects
(symbol library table).
- Check to see if any symbol libraries need to be added to the current
project's symbol library table. This includes:
- Check if the symbol library already exists in the project or global
symbol library table.
- Convert symbol library URLS that use the ${KIPRJMOD} environment
variable to absolute paths. ${KIPRJMOD} will not be the same for
this project.
- Check for duplicate symbol library nicknames and change the new symbol
library nickname to prevent library name clashes.
- Update all schematic symbol LIB_ID object library nicknames when the
library nickname was changed to prevent clashes.
- Check for duplicate sheet names which is illegal and automatically
rename any duplicate sheets in the imported schematic.
- Clear all of the annotation in the imported schematic to prevent
clashes.
- Append the objects from the temporary sheet to the current page.
- Replace any duplicate time stamps.
- Refresh the symbol library links.
Add support code to SCH_SCREEN object to assist with schematic import.
Doxygen comment cleaning.
Fixes lp:1731760
https://bugs.launchpad.net/kicad/+bug/1731760
Refactor rescue objects so that they can support derivation.
Factor out legacy rescuer code to perform legacy project rescues.
Create new symbol library table rescuer for rescuing symbol library table
based projects.
Perform the correct rescue type on project load.
Add symbol library table remapping support to the tools menu for run on
demand as applicable.
Add flag to SCH_SCREENS::UpdateSymbolLinks() to allow forcing the symbol
link updates when the library modification hash has not changed.
Simplify some of the library editing code. There have been a few minor
changes in the behavior of the editor. If the current symbol is deleted
from the library, the next symbol in the library is not loaded. The
deleted symbol is cleared and the current symbol is empty.
Change component to symbol to align with the preferred terminology
discussed on the developer's mailing list.
Add separate update UI event for save library as to enable the menu entry
whenever a library is selected.
Change the select symbol list dialog to a single column using the LIB_ID
format LIB_NICKNAME:LIB_ITEM_NAME so that the selection can be parsed by
LIB_ID.
Add method to expand URI to LIB_TABLE_BASE.
Override wxApp::OnExceptionInMainLoop() in debug builds to make debugging
easier when an unhandled exception occurs in a wxUpdateUIEvent handler.
Change SCH_SCREENS::HasNoFullyDefinedLibIds() to return false when the
schematic has no symbols to prevent the remapping dialog from being run.
Use SCH_COMPONENT part reference when creating netlist rather than looking
up the library symbol.
Check the if the schematic being loaded has been remapped (no symbol
library table nicknames defined) and remap accordingly.
Fix issues when resolving the library symbol links in the schematic
symbols.
Add cache library fallback when resolving symbols that cannot be
remapped.
Add remap complete message to remap dialog.
Add HasLibrary() helper to LIB_TABLE_BASE.
Fix issues when loading library symbols using symbol library table.
Add hashing function to symbol library table.
Improve the symbol panel message to warn user when cache library is
used to resolve symbol.
In LIB_EDIT_FRAME::GetComponentFrom{Undo,Redo}List() methods, the
PICKED_ITEMS_LIST object which was retrieved from undo/redo list has not
been destroyed.
Rewritten SCH_SCREEN::ClearUndoORRedoList() to be easier to read.
Minor whitespace formatting.
Add loading symbol library table code to schematic PROJECT object.
Fix minor issues with loading global symbol library table.
Add default symbol library path environment variable to the environment
variable list and change the variable name to KICAD_SYMBOL_DIR.
Add code to SCH_SCREENS to test if all library nicknames of the symbol
library IDs are empty.
Remove unnecessary KICAD_USE_SCH_IO_MANAGER build option.
For some reason, the schematic symbol library link was being regenerated
every time the schematic was redrawn in SCH_SCREEN::Draw(). Remove the
re-link call from the Draw() and Plot() functions.
Add function the SCH_SCREENS to update the links in all of the schematic
sheets.
Update all schematic sheet symbol library links whenever the symbol
library list is modified or any library in the library list is modified.
That should cover all cases where the symbol library links could be
broken.
Refresh schematic window after applying library changes to update any
possible symbol changes.
Add KIWAY message to update the schematic when symbol library changes
could change the schematic. The KIWAY mail was used because the schematic
frame is not a parent of the symbol library editor so wxEvents cannot be
used.
For some reason, rather than using the LIB_PART object reference by an
SCH_COMPONENT to check if a pin was at a given position in the schematic,
a LIB_PART search was performed for every component in a schematic. This
made absolutely no sense and was changed to use the LIB_PART referenced
by the SCH_COMPONENT object. This should significantly speed up any
operations that call SCH_SCREEN functions, IsTerminalPoint(),
MarkConnections(), and IsJunctionNeeded().
Add function to SCH_COMPONENT to access PART_REF object.
eeschema now supports arbitrary colors for all object types, and
pcbnew does in GAL canvas. When switching from GAL to legacy canvas,
pcbnew will convert colors to the nearest legacy color.
Use LIB_ID instead of wxString for storing the library symbol information
in the schematic symbol in preparation for the upcoming symbol library table
implementation.
Change the FindLibAlias and FindLibPart functions in the PART_LIBS object
instead of wxString. Please note that only the library ID name is used to
search the list of libraries. The library nickname is ignored. Once the
symbol library table is implemented and full LIB_IDs are defined, the
library search code will no longer be used and will only be kept to load
older schematics that have not been converted.
Move SCH_LEGACY_PLUGIN_CACHE definition so that the legacy plugin knows
how to properly delete the cache object.
Make all EDA_TEXT data private and rename accessors to avoid function
name collisions in derived classes.
Overload EDA_TEXT's SetTextAngle() and SetEffects() in TEXTE_PCB.
Add support for preserving Reference text position, size, orientation
during a netlist import into a BOARD, as well as the one off footprint
update dialog.
* Remove wxDC and EDA_DRAW_FRAME parameters from SCH_SCREEN::SchematicCleanUp()
function call.
* Update all code that calls SCH_SCREEN::SchematicCleanUp() with wxDC and/or EDA_DRAW_FRAME
parameters.
* Fix a display refresh bug when incrementally inserting bus entries created in my last commit.
IsDanglingStateChanged() appears to be broke for bus entries.
* Remove wxDC and EDA_DRAW_PANEL as parameters from function
SCH_SCREEN::TestDanglingEnds().
* Change SCH_SCREEN::TestDanglingEnds() to return the connection change state
rather than the dangling end status which wasn't used anywhere.
* Update all calls to SCH_SCREEN::TestDanglingEnds() to remove wxDC and
EDA_DRAW_PANEL parameters and refresh connection indicators only if a
connection state change occurred.
* Add function to get a list pointers to this sheet and all of it's sub-sheets
to SCH_SHEET.
* Remove unused function SetFootprintField() from SCH_SHEET_PATH.
* Uncouple SCH_COMPONENT::GetRef() from SCH_SHEET_PATH and use SCH_SHEET
instead.
* Uncouple SCH_COMPONENT::GetUnitSelection() from SCH_SHEET_PATH and use
SCH_SHEET instead.
* Fix all calls to GetRef() and GetUnitSelection() to pass a pointer to the
appropriate SCH_SHEET object instead of an SCH_SHEET_PATH object.
* Add code to SCH_SHEET object to clear annotation.
* Change SCH_COMPONENT::GetPath() to derive path from SCH_SHEET object instead
of SCH_SHEET_PATH object.
* Remove clear annotation code from SCH_SCREENS object.
* The SCH_COLLECTOR m_foundItems was being obsoleted after a pin name search.
If a library edit changed the found pin name, the cache still held the now
missing library pin and would segfault on next search due to the cache being
out of date.
* move not shared files (sch_item_struct.*, sch_base_frame.h) to eeschema;
* move wxEeschemaStruct.h to eeschema and rename it schframe.h to be consistent with the other corresponding file name schframe.cpp;
* remove few not needed #include
*) When kicad.exe closes a project, close any open KIFACEs so that they cannot
get disassociated from their true PROJECT.
*) Allow loading eeschema library editor from kicad.exe
*) Allow loading pcbnew library editor from kicad.exe
*) Rename LIB_COMPONENT to LIB_PART.
*) Add class PART_LIBS, and PART_LIB.
*) Make PART_LIBS non-global, i.e. PROJECT specific.
*) Implement "data on demand" for PART_LIBS
*) Implement "data on demand" for schematic SEARCH_STACK.
*) Use RSTRINGs to retain eeschema editor's notion of last library and part being edited.
*) Get rid of library search on every SCH_COMPONENT::Draw() call, instead use
a weak pointer.
*) Remove all chdir() calls so projects don't need to be CWD.
*) Romove APPEND support from OpenProjectFiles().
*) Make OpenProjectFiles() robust, even for creating new projects.
*) Load EESCHEMA colors in the KIWAY::OnKiwayStart() rather in window open,
and save them in the .eeschema config file, not in the project file.
*) Fix bug with wxDir() while accessing protected dirs in kicad.exe
*) Consolidate template copying into PROJECT class, not in kicad.exe source.
*) Generally untangle eeschema, making its libraries not global but rather
held in the PROJECT.
Remove a minor warning message in Debug mode for 2 dialogs.
Pcbnew: update Gerber X2 file format (File Attribute) to very last X2 specification
Eeschema: Fix a minor bug in block selection (sometimes the last selected component was select instead of items in selected area)
and better drag behavior when draging an item by the drag hotkey.
- 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
! 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.
Remove KICAD_GOST option because it is now useless: the 2 GOST options are now selectable at run time and are:
* specific page layouts (now user definable, and the GOST page layouts are available in template folder)
* notation for multiple parts per package (made in eeschema, preference menu)
Fix an annoying issue about not named nets:
now, these nets are named from the component references and pin names which are connected.
therefore, unless the net or the footprint references are modified, the net name is not modified between 2 netlist calculations.
the spurious warning about stuff that couldn't be seen when changing
colours.
NOTE that the 'net name' layer is present and configurable but non used
anywhere!
* Complete encapsulation of the MODULE class.
* Complete encapsulation of the EDA_TEXT class.
* Encapsulate most of the ZONE_CONTAINER class.
* Add pcbcommon library as a dependency for reSWIGging the scripting
support. This should cover most dependency cases.
* Move EDA_TEXT object into separate header and source file.
* Compile EDA_TEXT class separately for BOARD_ITEM and SCH_ITEM units.
* Compile PAGE_INFO class separately for BOARD_ITEM and SCH_ITEM units.
* Minor formatting tweaks to Pcbnew s-expression file.
* Move internal unit formatting functions into BOARD_ITEM and SCH_ITEM.
* Add s-expression Format() function to all objects derived from
BOARD_ITEM.
* Add s-expression Format() function to base objects as required.
* Add functions to convert coordinates from base internal units
(nanometers) to millimeter string for writing to s-expression
file.
* Add temporary dummy conversion functions to prevent link errors
until schematic and board object and action code can be separated
into DSO/DLL.
* Add CMake build option to build Pcbnew with nanometer internal
units.
* BLOCK_SELECTOR class is not longer derived from EDA_ITEM.
* Encapsulate BLOCK_SELECTOR class member variables and add access methods.
* Move HandleBlockBegin() function from block_commande.cpp to drawframe.cpp.
* Remove virtual methods from top level derived objects per future
coding policy change.
* Remove Doxygen copydoc statement from objects derived from EDA_ITEM
since the comments are automatically copied to the derived object.
* Removed copy and pasted Doxygen comments from objects derived from
EDA_ITEM.
* Convert Eeschema from manually linked list to DLIST for storing
SCH_ITEM objects.
* Add helper functions to SCH_SCREEN for appending list of SCH_ITEM
objects.
* Fix bug in wire editing code for accurate undo/redo behavior.
* Add member to DLIST to append another DLIST.
* Other minor code cleaning.
sizes. Tested with postscript output only. Required minor file format changes
to reflect the "portrait" setting. common/dialogs/dialog_page_settings.cpp
uses a checkbox but its name is "Landscape", which is inverted from portrait,
but since it is the more common choice, I used that rather than portrait.
The tooltip for that checkbox makes it clear. No portrait mode is supported
for "User" paper size.
* EDA_DRAW_PANEL completely encapsulated.
* Moved OSX m_overlay member from EDA_DRAW_PANEL to EDA_DRAW_FRAME where
it is used.
* Doxygen comment warning fixes.
In common.cpp GetTimeStamp is renamed GetNewTimeStamp (a better name).
Pcbnew: prepare work to calculate connections between pads that inteserct and therefore can be connected without any track (composite pads).
* Add get and set position methods to all schematic items.
* Encapsulate schematic item position members.
* Add swap data method to schematic items that lacked one.
* Remove global swap data function used by undo and redo functions.
* Unify as many schematic move methods as possible.
* Remove unnecessary place schematic item methods.
* All schematic items are now moved in the same event handler.
* Fixed bug in hierarchical sheet get menu item string method.
* Make no connect and junction items movable, fixes lp:804048
* Move the hierarchical label connected test into the NETLIST_OBJECT class.
* ERC pin type strings can now be translated.
* Remove unused EDA_DRAW_PANEL attribute from all ERC test functions.
* Add get marker count method to SCH_SCREENS object.
* Redundant header removal.
* Lots of coding style policy fixes.
* Correct all user strings and comments for the correct capitalization of
application names according to JP. They are KiCad, Pcbnew, CvPcb,
Eeschema, and GerbView.
* Add a note the the user interface policy about the correct capitalization.
Eeschema:
* Graphic texts ans labels: fix fully broken undo/redo code relative to the way undo/redo command
* handles changes (maintly move) for labels
* Fix minor bug for undo command relative to block rotate
* Remove dead code.
* Add new class BITMAP_BASE, and (for Eeschema) SCH_BITMAP to handle bitmap images in schematic.
Remember plot Bitmaps in not possble with all plotters.
* Change the minimum required CMake version to 2.6.4 for all build platforms
except Windows and OSX.
* Move all schematic plot code from plot.cpp into the appropriate schematic
objects.
* Create SCH_SCREEN plot method to plot all objects in the schematic
screen.
* Delete plot.cpp and remove it from the CMakeList file.
* Move code from function ClearProjectDrawList() into SCH_SCREEN object
Clear() method.
* Delete eeschema/delsheet.cpp as none of the code in it is ever called.
* Move global spice and net list command line variables into SCH_EDIT_FRAME
object as priviate members and provide access methods.
* Remove unnecessary header includes from eeschema/sheet.cpp.
* Minor coding policy fixes.
Pcbnew: refresh issue with dialog designe rules under wxWidgets 2.9.2 under WINDOWS (replace wxChoiceBox by wxComboBox, should not change anything for users)
Eeschema: some issues in libedit (when editing a pin )
Also fix a minor zoom page issue in Libedit.
wxMSW, version 2.8.x must be patched.
Some zoom values smaller than 3 to 5 create artifacts on screen, mainly values < 1.
(corresponding to draw scale factor > 1 )
* see http://trac.wxwidgets.org/ticket/9554
This is fixed in version 2.9.x
Workaround: ( that is not a full fix, but remaining artifacts are acceptable )
edit file edit file <wxWidgets>/src/msw/dc.cpp
>> search for line
static const int VIEWPORT_EXTENT = 1000;
>> and replace by
static const int VIEWPORT_EXTENT = 10000;
* Move undo item copy global variable into schematic editor frame object
member variable.
* Add helper methods for accessing the undo item copy member variable.
* Fix undetected bug when changing a text type.
* Added an exchange command to the undo/redo base class for handling undoing
a changed item type which cannot be undone by swapping out the variables.
* Revert change to common/hotkeys_basic.cpp that broke hot key behavior.
* Lots of coding policy changes while making the changes above.
* Change all code references to pin sheet and sheet label to sheet pin to
more closely match the sheet pin object for improved code readability.
* Change menu and tool bar text from pin sheet to sheet pin for improved
user readability.
* Moved sheet pin place method to sheet pin object source file.
* Move last sheet pin stored state information into schematic frame object.
* Add Doxygen comments for the sheet pin editing methods.
* Push schematic back annotation code down into the appropriate class.
* Minor improvements to back annotate file selection code and user prompt
strings.
* Minor tool bar tool tip capitalization fixes.
* Change tool bar ID error from message dialog to a debug assert message.
* Add item clarification context menu to EESchema when multiple unresolved
items are found at the current cross hair position.
* Add collector class SCH_COLLECTOR for supporting multiple item hit testing.
* Removed bit wise masked filtering from schematic item hit testing.
* Removed all old hit testing functions and methods scattered about the
EESchema source code.
* Move terminal point test function into SCH_SCREEN object.
* Fixed bug in terminal point test when terminating a bus to a label.
* Define the < operator for sorting schematic items.
* Add area calculation method to EDA_Rect item.
* Add method for returning an item's bitmap for menu display purposes.
* Add method for returning an item's menu text for menu display purposes.
* Changed EDA_ITEMS container from boost::ptr_vector to std::vector.
* Factor coordinate string conversion code from EDA_DRAW_FRAME to function
CoordinateToString().
* Move locate function code into schematic screen object.
* Move test for junction needed into schematic screen object.
* Move test for marking connected items into schematic screen object.
* Move delete item function code into schematic screen object.
* Move delete all markers code into schematic screen object.
* Add method for locating multiple items in schematic screen object.
* Fix minor bug in schematic field object hit test declaration.
* Initial encapsulation work on item picker object.
* Remove duplicate doxygen comments from item picker object source file.
* CVPcb now uses wxUpdateUIEvent instead of set toolbars.
* Removed duplicate event handlers in CVPcb that were factored into
EDA_DRAW_FRAME.
* Fix definition of GeneralControle() in CVPcb that prevented it from being
called.
* Remove rarely used and scary refresh code GeneralControle() method in all
main frame windows.
* Factor zoom menu and tool bar command IDs down to EDA_DRAW_FRAME.
very minor enhancement in netlist dialog.
Gerbview: remove useless code I wrote specific to Windows in BOARD::Draw() function, because Wayne has fixed the bug.
common_plotPS_functions.cpp: remove a potential bug.
Rename some classes according to coding style policy.
* Remove base screen methods from draw frame object and correct current
screen methods in derived objects.
* Move restore old wires function code into schematic screen object.
* Make add junction method use current screen position instead of store
position.
* Move poly line ghosting function into the delete current segment method
as that was the only place is was being used.
* Add method to base schematic object of testing if object has a label
that can be incremented.
* Simplified the schematic hierarchy traversing code.
* PCBNew Doxygen warning fixes.
* Move schematic wire and bus break code into schematic screen object.
* Move schematic test for dangling ends into schematic screen object.
* Remove left over debugging output in schematic screen object.
* Remove unused file eeschema/cleanup.cpp.
* Fix bug in schematic line object hit test algorithm.
* Fix a string concatenation compile error added in r2752.
* Rename class WinEDA_BasicFrame to EDA_BASE_FRAME.
* Rename class WinEDA_DrawFrame to EDA_DRAW_FRAME.
* Rename class WinEDA_DrawPanel to EDA_DRAW_PANEL.
* Encapsulate file name member of base screen object.
* Encapsulate associated screen member of schematic sheet object.
* Create add screen method to schematic sheet object to simplify setting
the associated screen.
* Move the change file name code in the schematic sheet object to the edit
sheet method in the schematic editor frame object to eliminate message
dialogs.
* Improve reference counting in schematic screen object.
* Add helper type definitions for changing schematic object storage to C++
containers.
* Rename sch_item files to sch_junction.
* Make global variable g_ItemToRepeat a private member of SCH_EDIT_FRAME
object.
* Encapsulate SCH_SCREEN reference count member.
* Change default build to enable wxDC zooming.
* Move sheet label find function into SCH_SCREEN object.
* Move draw screen items function into SCH_SCREEN object.
* Remove redundant page print method from SCH_EDIT_FRAME.
* Add method to hit test for all items in SCH_SCREEN.
* Add method for testing if junction is required in SCH_SCREEN.
* Fix Doxygen waring in help_common_strings.h
* Move update block pick list code to SCH_SCREEN object.
* Remove redundant drawing function RedrawOneStruct().
* Change context menu text "Noconn" to "No Connect".
* Change context menu text "GLabel" to "Global Label".
* Move schematic select block from global variable to SCH_EDIT_FRAME.
* Remove redundant schematic drawing code for eeredraw.cpp.
* Move block select code into SCH_SCREEN object.
* Simpilify block item select code.
* Fix bug in SCH_LINE selection state test.
* Add test to schematic objects for connectability.
* Make copy block items function a private method in SCH_EDIT_FRAME.