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Makefile.cover_image
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Makefile.cover_image
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# Makefile.cover_image
# This file is common to the following
# ne alinome (http://ne.alinome.net) projects:
#
# - Diccionario español-interlingüe
# - English-Interlingue Dictionary
# - Grammatica de Interlingue in Interlingue
# - Interlingue Course in 10 Lessons
# - Li defectes ínacceptabil de Interlingua Gode
# By Marcos Cruz (programandala.net)
# Last modified 20210526T1723+0200.
# See change log at the end of the file.
# ==============================================================
# Requirements {{{1
# ImageMagick (by ImageMagick Studio LCC)
# http://imagemagick.org
# img2pdf (by Johannes 'josch' Schauer)
# https://gitlab.mister-muffin.de/josch/img2pdf
# ==============================================================
# Default values {{{1
author_pointsize ?= 72
title_pointsize ?= 128
# ==============================================================
# Create the cover image {{{1
# ------------------------------------------------
# Create the canvas and texts of the cover image {{{2
font=Helvetica
publisher_font=Helvetica
background=yellow
fill=black
strokewidth=4
logo='\#FFD700' # gold
tmp/$(cover).title.png:
convert \
-background transparent \
-fill $(fill) \
-font $(font) \
-pointsize $(title_pointsize) \
-size 1200x \
-gravity east \
caption:$(cover_title) \
$@
tmp/$(cover).author.png:
convert \
-background transparent \
-fill $(fill) \
-font $(font) \
-pointsize $(author_pointsize) \
-size 896x \
-gravity east \
caption:$(cover_author) \
$@
tmp/$(cover).publisher.png:
convert \
-background transparent \
-fill $(fill) \
-font $(publisher_font) \
-pointsize 24 \
-gravity east \
-size 128x \
caption:$(publisher) \
$@
tmp/$(cover).logo.png: img/icon_plaincircle.svg
convert $< \
-fuzz 50% \
-fill $(background) \
-opaque white \
-fuzz 50% \
-fill $(logo) \
-opaque black \
-resize 256% \
$@
tmp/$(cover).decoration.png: img/$(book)_cover_decoration.png
convert $< \
-fuzz 10% \
-fill $(background) \
-opaque white \
-resize 48% \
$@
# ------------------------------------------------
# Create the cover image {{{2
target/$(cover).jpg: \
tmp/$(cover).title.png \
tmp/$(cover).author.png \
tmp/$(cover).publisher.png \
tmp/$(cover).logo.png \
tmp/$(cover).decoration.png
convert -size 1200x1600 canvas:$(background) $@
composite -gravity south -geometry +000+000 tmp/$(cover).logo.png $@ $@
composite -gravity northeast -geometry +048+048 tmp/$(cover).title.png $@ $@
composite -gravity northeast -geometry +048+512 tmp/$(cover).author.png $@ $@
composite -gravity southeast -geometry +048+048 tmp/$(cover).publisher.png $@ $@
composite -gravity west -geometry +102+170 tmp/$(cover).decoration.png $@ $@
# ------------------------------------------------
# Convert the cover image to PDF {{{2
# This is needed in order to make sure the cover image ocuppies the whole page
# in the PDF versions of the book.
tmp/$(cover).pdf: target/$(cover).jpg
img2pdf --output $@ --border 0 $<
# ------------------------------------------------
# Create a thumb version of the cover image {{{2
%_thumb.jpg: %.jpg
convert $< -resize 190x $@
# ==============================================================
# Change log {{{1
# 2020-02-24: Prepare a cover image of "Grammatica de Interlingue in
# Interlingue".
#
# 2020-04-01: Improve the cover image for "Grammatica de Interlingue in
# Interlingue".
#
# 2020-04-01: Add a cover image to "Grammatica de Interlingue in Interlingue".
#
# 2020-04-01: Add the decoration to the cover image of "Grammatica de
# Interlingue in Interlingue".
#
# 2020-04-02: Add a cover image to "Interlingue Course in 10 Lessons".
#
# 2020-04-06: Adjust the size and layout of the cover texts for "Grammatica de
# Interlingue in Interlingue" and "Interlingue Course in 10 Lessons".
#
# 2020-08-24: Add a cover image to "English-Interlingue Dictionary".
#
# 2020-08-28: Extract the cover image Makefile code common to the three
# projects, in order to share it and make updates easier.
#
# 2020-11-03: Document the requirements.
#
# 2020-11-04: Add a variable for the publisher font. This makes the code easier
# to reuse in other projects.
#
# 2021-04-29: Update file header.
#
# 2021-04-30: Make the title and author sizes configurable, keeping their
# default values.