F_Cu = 0
B_Cu = 2
Remaining internal copper layers are even and incrementing
Non-copper layers are odd and incrementing.
This means that we can no longer do things like:
for( PCB_LAYER_ID layer = F_Cu; layer <= B_Cu; ++layer)
Instead, we have the class LAYER_RANGE:
for( PCB_LAYER_ID layer : LAYER_RANGE( F_Cu, B_Cu) )
Similarly, gt/lt tests should not refer to the integer value of the
layer. We have functions such as IsCopperLayer to test whether a layer
is copper or not.
When using the connectivity RTree, the third dimension is layer, so we
provide B_Cu with the special INT_MAX value, ensuring that elements
between F_Cu and B_Cu will be identified. There is a new, special
function GetBoardLayer() for interfacing with CN_ITEMS
Similarly, PNS layers remain unchanged and sequential. A set of
interface functions is provided to map PNS layers to Board layers and
back. This allows the PNS_LAYER_RANGE to function as expected
This allows to see what the current snap point is, which is useful when
zoomed in, or the point is like the corner of a rounded pad where it's
"in free space" and might not be immediately obvious.
The separates it from the LAYER_SELECTOR class - deciding
what color a layer is (say) is separate to managing the
actual selection of the layer. For example, sel_layer.cpp
only needs the presentation logic. This also makes it eaiser
to compose rather than inherit.
Additonally, break out the layer pair swatch function
to this class.
This will also be needed by the layer pair manager UI.
Relates-To: https://gitlab.com/kicad/code/kicad/-/issues/15227
This moves a fiddly little bit of logic used by a few UI
classes into a central location.
Also means that the paths dialog learns to expand the
first cell when it needs to (like the text variable
panel).
Schematics, symbols, boards and footprints all get the ability to store
files inside their file structures. File lookups now have a
kicad-embed:// URI to allow various parts of KiCad to refer to files
stored in this manner.
kicad-embed://datasheet.pdf references the file named "datasheet.pdf"
embedded in the document. Embeds are allowed in schematics, boards,
symbols and footprints. Currently supported embeddings are Datasheets,
3D Models and drawingsheets
Fixes https://gitlab.com/kicad/code/kicad/-/issues/6918
Fixes https://gitlab.com/kicad/code/kicad/-/issues/2376
Fixes https://gitlab.com/kicad/code/kicad/-/issues/17827
