chore: Add a basic logo

.Rbuildignore

@@ -1,9 +1,12 @@
 CONTRIBUTING
 README.rst
+^README.html$
 cran-comments.rst
 .travis.yml
 ^\.appveyor\.yml$
 ^revdep$
 ^_pkgdown.yml$
 ^.lintr$
 ^\.github$
+^pkgdown$
+^raw-data$

.gitignore

@@ -2,4 +2,6 @@
 *.timestamp
 argparse.rst
 README.md
+README.html
 revdep
+pkgdown

README.rst

@@ -17,6 +17,11 @@ argparse: Command line optional and positional argument parser
     :target: https://cran.r-project.org/package=argparse
     :alt: RStudio CRAN mirror downloads
 
+.. raw:: html
+
+   <img src="man/figures/logo.png" align="right" width="200px" alt="argparse hex sticker">
+
+
 ``argparse`` is an R package which provides a command line parser to
 be used with Rscript to write "#!" shebang scripts that gracefully
 accept positional and optional arguments and automatically generate usage.

Rakefile

@@ -0,0 +1,6 @@
+desc "Build files for packaging"
+task :default do
+    sh 'rst2html README.rst README.html'
+    sh 'pandoc -t markdown_strict -o README.md README.rst'
+    sh 'Rscript -e "pkgdown::build_site()"'
+end

raw-data/logo.R

@@ -0,0 +1,29 @@
+library("bittermelon")
+library("grid")
+library("piecepackr")
+
+font_file <- system.file("fonts/spleen/spleen-8x16.hex.gz", package = "bittermelon")
+font <- read_hex(font_file)
+argparse <- as_bm_bitmap("argparse", font = font)
+hashbang <- as_bm_bitmap("#!", font = font)
+
+draw_logo <- function() {
+    hex <- pp_shape("convex6")
+    grid.newpage()
+    grid.draw(hex$shape(gp = gpar(col = NA, fill = "gold")))
+    plot(argparse, col = c("transparent", "black"),
+         vp = viewport(y = 0.65, width=0.75, height = 0.21))
+    plot(hashbang, col = c("transparent", "black"),
+         vp = viewport(y = 0.33, width = 0.5, height = 0.4))
+    grid.draw(hex$mat(mat_width = 0.03, gp = gpar(col = NA, fill = "black")))
+}
+
+w <- 3.0
+svg("man/figures/logo.svg", width = w, height = w, bg = "transparent")
+draw_logo()
+dev.off()
+
+png("man/figures/logo.png", width = w, height = w, units = "in",
+    res = 72, bg = "transparent")
+draw_logo()
+dev.off()