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-rwxr-xr-xlib/python/qmk/cli/generate/keyboard_c.py138
1 files changed, 133 insertions, 5 deletions
diff --git a/lib/python/qmk/cli/generate/keyboard_c.py b/lib/python/qmk/cli/generate/keyboard_c.py
index 228b320942..1978de4a22 100755
--- a/lib/python/qmk/cli/generate/keyboard_c.py
+++ b/lib/python/qmk/cli/generate/keyboard_c.py
@@ -1,5 +1,9 @@
"""Used by the make system to generate keyboard.c from info.json.
"""
+import bisect
+import dataclasses
+from typing import Optional
+
from milc import cli
from qmk.info import info_json
@@ -87,6 +91,7 @@ def _gen_matrix_mask(info_data):
lines.append(f' 0b{"".join(reversed(mask[i]))},')
lines.append('};')
lines.append('#endif')
+ lines.append('')
return lines
@@ -122,6 +127,128 @@ def _gen_joystick_axes(info_data):
lines.append('};')
lines.append('#endif')
+ lines.append('')
+
+ return lines
+
+
+class LayoutKey:
+ """Geometric info for one key in a layout."""
+ row: int
+ col: int
+ x: float
+ y: float
+ w: float = 1.0
+ h: float = 1.0
+ hand: Optional[str] = None
+
+ @staticmethod
+ def from_json(key_json):
+ row, col = key_json['matrix']
+ return LayoutKey(
+ row=row,
+ col=col,
+ x=key_json['x'],
+ y=key_json['y'],
+ w=key_json.get('w', 1.0),
+ h=key_json.get('h', 1.0),
+ hand=key_json.get('hand', None),
+ )
+
+ @property
+ def cx(self):
+ """Center x coordinate of the key."""
+ return self.x + self.w / 2.0
+
+ @property
+ def cy(self):
+ """Center y coordinate of the key."""
+ return self.y + self.h / 2.0
+
+
+class Layout:
+ """Geometric info of a layout."""
+ def __init__(self, layout_json):
+ self.keys = [LayoutKey.from_json(key_json) for key_json in layout_json['layout']]
+ self.x_min = min(key.cx for key in self.keys)
+ self.x_max = max(key.cx for key in self.keys)
+ self.x_mid = (self.x_min + self.x_max) / 2
+ # If there is one key with width >= 6u, it is probably the spacebar.
+ i = [i for i, key in enumerate(self.keys) if key.w >= 6.0]
+ self.spacebar = self.keys[i[0]] if len(i) == 1 else None
+
+ def is_symmetric(self, tol: float = 0.02):
+ """Whether the key positions are symmetric about x_mid."""
+ x = sorted([key.cx for key in self.keys])
+ for i in range(len(x)):
+ x_i_mirrored = 2.0 * self.x_mid - x[i]
+ # Find leftmost x element greater than or equal to (x_i_mirrored - tol).
+ j = bisect.bisect_left(x, x_i_mirrored - tol)
+ if j == len(x) or abs(x[j] - x_i_mirrored) > tol:
+ return False
+
+ return True
+
+ def widest_horizontal_gap(self):
+ """Finds the x midpoint of the widest horizontal gap between keys."""
+ x = sorted([key.cx for key in self.keys])
+ x_mid = self.x_mid
+ max_sep = 0
+ for i in range(len(x) - 1):
+ sep = x[i + 1] - x[i]
+ if sep > max_sep:
+ max_sep = sep
+ x_mid = (x[i + 1] + x[i]) / 2
+
+ return x_mid
+
+
+def _gen_chordal_hold_layout(info_data):
+ """Convert info.json content to chordal_hold_layout
+ """
+ # NOTE: If there are multiple layouts, only the first is read.
+ for layout_name, layout_json in info_data['layouts'].items():
+ layout = Layout(layout_json)
+ break
+
+ if layout.is_symmetric():
+ # If the layout is symmetric (e.g. most split keyboards), guess the
+ # handedness based on the sign of (x - layout.x_mid).
+ hand_signs = [key.x - layout.x_mid for key in layout.keys]
+ elif layout.spacebar is not None:
+ # If the layout has a spacebar, form a dividing line through the spacebar,
+ # nearly vertical but with a slight angle to follow typical row stagger.
+ x0 = layout.spacebar.cx - 0.05
+ y0 = layout.spacebar.cy - 1.0
+ hand_signs = [(key.x - x0) - (key.y - y0) / 3.0 for key in layout.keys]
+ else:
+ # Fallback: assume handedness based on the widest horizontal separation.
+ x_mid = layout.widest_horizontal_gap()
+ hand_signs = [key.x - x_mid for key in layout.keys]
+
+ for key, hand_sign in zip(layout.keys, hand_signs):
+ if key.hand is None:
+ if key == layout.spacebar or abs(hand_sign) <= 0.02:
+ key.hand = '*'
+ else:
+ key.hand = 'L' if hand_sign < 0.0 else 'R'
+
+ lines = []
+ lines.append('#ifdef CHORDAL_HOLD')
+ line = ('__attribute__((weak)) const char chordal_hold_layout[MATRIX_ROWS][MATRIX_COLS] PROGMEM = ' + layout_name + '(')
+
+ x_prev = None
+ for key in layout.keys:
+ if x_prev is None or key.x < x_prev:
+ lines.append(line)
+ line = ' '
+ line += f"'{key.hand}', "
+ x_prev = key.x
+
+ lines.append(line[:-2])
+ lines.append(');')
+ lines.append('#endif')
return lines
@@ -136,11 +263,12 @@ def generate_keyboard_c(cli):
kb_info_json = info_json(cli.args.keyboard)
# Build the layouts.h file.
- keyboard_h_lines = [GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE, '#include QMK_KEYBOARD_H', '']
+ keyboard_c_lines = [GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE, '#include QMK_KEYBOARD_H', '']
- keyboard_h_lines.extend(_gen_led_configs(kb_info_json))
- keyboard_h_lines.extend(_gen_matrix_mask(kb_info_json))
- keyboard_h_lines.extend(_gen_joystick_axes(kb_info_json))
+ keyboard_c_lines.extend(_gen_led_configs(kb_info_json))
+ keyboard_c_lines.extend(_gen_matrix_mask(kb_info_json))
+ keyboard_c_lines.extend(_gen_joystick_axes(kb_info_json))
+ keyboard_c_lines.extend(_gen_chordal_hold_layout(kb_info_json))
# Show the results
- dump_lines(cli.args.output, keyboard_h_lines, cli.args.quiet)
+ dump_lines(cli.args.output, keyboard_c_lines, cli.args.quiet)