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Implement rendering of sample text

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Kovid Goyal
2024-05-08 16:02:42 +05:30
parent 333e94622e
commit 2c2fbd4445
6 changed files with 109 additions and 19 deletions
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40
kittens/choose_fonts/backend.py
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@@ -4,14 +4,18 @@
import json
import string
import sys
import tempfile
from typing import Any, Dict, Tuple, TypedDict
from kitty.conf.utils import to_color
from kitty.constants import kitten_exe
from kitty.fonts import Descriptor
from kitty.fonts.common import face_from_descriptor, get_font_files, get_variable_data_for_descriptor
from kitty.fonts.list import create_family_groups
from kitty.fonts.render import display_bitmap
from kitty.options.types import Options
from kitty.options.utils import parse_font_spec
from kitty.utils import screen_size_function
def send_to_kitten(x: Any) -> None:
@@ -55,13 +59,13 @@ def opts_from_cmd(cmd: Dict[str, Any]) -> Tuple[Options, FamilyKey, float, float
BaseKey = Tuple[FamilyKey, int, int]
FaceKey = Tuple[str, BaseKey]
SAMPLE_TEXT = string.ascii_lowercase + string.digits + string.ascii_uppercase + ' ' + string.punctuation
SAMPLE_TEXT = string.ascii_lowercase + ' ' + string.digits + ' ' + string.ascii_uppercase + ' ' + string.punctuation
def render_face_sample(font: Descriptor, opts: Options, dpi_x: float, dpi_y: float, width: int, height: int, output_dir: str) -> str:
def render_face_sample(font: Descriptor, opts: Options, dpi_x: float, dpi_y: float, width: int, height: int) -> bytes:
face = face_from_descriptor(font)
face.set_size(opts.font_size, dpi_x, dpi_y)
face.render_sample_text(SAMPLE_TEXT, width, height, opts.foreground.rgb)
return face.render_sample_text(SAMPLE_TEXT, width, height, opts.foreground.rgb)
def render_family_sample(
@@ -85,7 +89,9 @@ def render_family_sample(
if cached is not None:
ans[x] = cached
else:
cache[key] = ans[x] = render_face_sample(desc, opts, dpi_x, dpi_y, width, height, output_dir)
with tempfile.NamedTemporaryFile(delete=False, suffix='.rgba', dir=output_dir) as tf:
tf.write(render_face_sample(desc, opts, dpi_x, dpi_y, width, height))
cache[key] = ans[x] = tf.name
return ans
@@ -106,3 +112,29 @@ def main() -> None:
send_to_kitten(render_family_sample(opts, family_key, dpi_x, dpi_y, cmd['width'], cmd['height'], cmd['output_dir'], cache))
else:
raise SystemExit(f'Unknown action: {action}')
def query_kitty() -> Dict[str, str]:
import subprocess
ans = {}
for line in subprocess.check_output([kitten_exe(), 'query-terminal']).decode().splitlines():
k, sep, v = line.partition(':')
if sep == ':':
ans[k] = v.strip()
return ans
def showcase(family: str) -> None:
q = query_kitty()
opts = Options()
opts.foreground = to_color(q['foreground'])
opts.background = to_color(q['background'])
opts.font_size = float(q['font_size'])
opts.font_family = parse_font_spec(family)
font_files = get_font_files(opts)
desc = font_files['medium']
ss = screen_size_function()()
width = ss.cell_width * ss.cols
height = 5 * ss.cell_height
bitmap = render_face_sample(desc, opts, float(q['dpi_x']), float(q['dpi_y']), width, height)
display_bitmap(bitmap, width, height)