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#!/usr/bin/python3
# coding: utf-8
import cairo
import subprocess
import math
import lxml
from lxml import etree
FONT_SIZE = 30
MARGIN = int(FONT_SIZE / 3)
#python3-lxml utility is required
def get_keymaps():
xml = etree.XML(bytes(open('/usr/share/X11/xkb/rules/evdev.xml', 'r').read(), encoding="utf-8"))
keymaps_x11 = xml.xpath('//layout/configItem/description/text()')
keymaps = subprocess.check_output(["localectl", "list-keymaps"]).decode("utf-8").strip().split()
# Note when changing this you MUST keep ply_keymap_normalize_keymap()
# from src/libply-splash-graphics/ply-keymap-icon.c in sync
def normalize_keymaps(keymap):
parts = keymap.replace("_", "-").replace(".", "-").split("-")
# Special case for dvorak, E.g. when mixing "us" and "us-dvorak"
# on machines returning "us" for both is not useful.
# Presumably users using dvorak now which variant they use
# so we just describe all dvorak layouts as "dvorak".
if "dvorak" in keymap:
return "dvorak"
# mac / sun keymaps are prefixes with mac / sun / sun[4-6]t
for prefix in ["mac", "sun" ]:
if keymap.startswith(prefix) and len(parts) > 1:
return parts[1]
return parts[0]
keymaps = list(map(normalize_keymaps ,keymaps))
#Remove duplicates
keymaps_dedupe = []
for k in keymaps:
if k not in keymaps_dedupe:
keymaps_dedupe.append(k)
ret = []
for k in keymaps_dedupe:
ret.append((k, "PLY_LAYOUT_TERMINAL"))
for k in keymaps_x11:
ret.append((k, "PLY_LAYOUT_XKB"))
return ret
# Calculate size
sf = cairo.ImageSurface(cairo.FORMAT_ARGB32, 1, 1)
ct = cairo.Context(sf)
ct.select_font_face("Cantarell", cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD)
ct.set_font_size(FONT_SIZE)
max_height = 0.0
total_width = 0.0
for i in get_keymaps():
text=i[0]
extents = ct.text_extents(text)
h = extents.height
if h > max_height:
max_height = h
total_width += extents.width
total_width += MARGIN * 2
ascent, descent, _h, _max_x, max_y = ct.font_extents()
# Create image
sf = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(total_width), int(max_height + MARGIN * 2))
ct = cairo.Context(sf)
ct.save()
ct.set_source_rgba(0, 0, 0, 0)
ct.set_operator (cairo.OPERATOR_SOURCE)
ct.paint()
ct.restore()
ct.select_font_face("Cantarell", cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD)
ct.set_font_size(FONT_SIZE)
ct.set_source_rgba(0.75, 0.75, 0.75, 1.0)
ct.move_to(MARGIN, MARGIN + max_height - descent)
current_x, current_y = (MARGIN, MARGIN + max_height - descent)
metadata = []
for km in get_keymaps():
km_text=km[0]
km_type=km[1]
extents = ct.text_extents(km_text)
ct.show_text(km_text)
metadata.append((km_text, current_x, extents.width + MARGIN * 2, km_type))
current_x += extents.width + (MARGIN * 2)
ct.move_to(current_x, current_y)
sf.write_to_png("keymap-render.png")
print("/* This file is autogenerated by running:")
print(" * scripts/keymap-render.py > src/libply-splash-graphics/ply-keymap-metadata.h")
print(" */")
print("typedef struct {")
print(" const char *name;")
print(" int offset;")
print(" int width;")
print(" int type;")
print("} ply_keymap_metadata_t;")
print("")
print("typedef enum {")
print(" PLY_LAYOUT_TERMINAL,")
print(" PLY_LAYOUT_XKB,")
print("} ply_layout_types_t;")
print("")
print("static ply_keymap_metadata_t ply_keymap_metadata[] = {")
for i in metadata:
print((" { \"%s\", %d, %d, %s}," % (i[0],i[1],i[2],i[3])))
print(" { NULL, } /* End of array marker */ ")
print("};")
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