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#!/bin/bash -e
# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Render a text file into a bitmap. Files named '*.txt' are normal text files,
# while '*.TXT' files may contain markup.
#
# Options:
#
# --lan=LANGUAGE Render language (locale) settings
# --font=FONTNAME Use specified font (instead of Droid Sans)
# --point=POINT Font size, in points (72dpi)
# --margin=MARGIN Set different margin (usually for font bitmaps)
# --color=COLOR Override foreground color (in '#ffffff' format)
# --align=ALING Override align settings (default: center)
# --markup Render text as pango-view markup file
#
font="Droid Sans"
language=""
pointsize=15
margin=3
align="center"
bgcolor="#ffffff"
color="#000000"
params=""
while true ; do
case "$1" in
--lan=* | --language=*)
language="--language=${1##*=}"
shift
;;
--font=*)
# Allows empty string = default font.
param="${1##*=}"
# TODO(hungte) support "+XXX" = add font description (ex, BOLD).
[ -n "$param" ] && font="$param"
shift
;;
--align=*)
align="${1##*=}"
shift
;;
--color=*)
color="${1##*=}"
shift
;;
--point=*)
pointsize="${1##*=}"
shift
;;
--margin=*)
margin="${1##*=}"
shift
;;
--markup)
params="$params --markup"
shift
;;
*)
break
;;
esac
done
# Revise color. pango-view color syntax (in #rrggbb) may cause problem in shell
# scripts, so let's also allow 'rrggbb'.
color="${color###}"
bgcolor="${bgcolor###}"
[ -z "$color" ] || color="#$color"
[ -z "$bgcolor" ] || bgcolor="#$bgcolor"
# Image parameters
# - New pango-view has --pixel to assign font size in pixel, but that is not
# supported by old (ex, 1.24.5 in chroot) so we must assign --dpi 72 for
# pointsize.
for txtfile in $*; do
# pango-view does not support assigning output format options for bitmap, so
# we must create images in PNG format and then post-process it (ex, convert
# into BMP by ImageMagick).
pngfile="${txtfile%.*}".png
file_opt=""
case "$txtfile" in
*.txt)
file_opt=""
;;
*.TXT)
file_opt="--markup "
;;
*)
echo "Ignoring $txtfile. Filename should end with .txt or .TXT"
continue
;;
esac
pango-view -q $language \
--hinting=full \
--background="$bgcolor" --foreground="$color" \
--font="$font $pointsize" --dpi 72 \
--margin=$margin \
--align="$align" \
$params $file_opt \
--output "$pngfile" \
"$txtfile"
echo "wrote $pngfile"
done
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