gridpattern v1.2.1

Breaking Changes

• The default type for the "placeholder" pattern
  is now "bear" instead of "kitten".
  Explicitly set type = "kitten" to continue to use
  the "kitten" placeholder but note that although
  the "kitten" placeholder website isn't completely down
  it has been buggy recently (#73).

New Features

• patternFill() wraps patternGrob() to return a
  grid::pattern() fill object (#70).

• The "geometry" patterns (e.g. "circle", "stripe", etc.) now allow
  the fill to be pattern fills (#67).

• The "geometry" patterns (e.g. "circle", "stripe", etc.) now allow
  the new units parameter to set which grid::unit() to use for the
  the spacing, xoffset, and yoffset parameters
  (and for the "wave" pattern also the amplitude and frequency parameters) (#58).
  By default it will continue to be "snpc" units but can now be changed to "cm", "in", etc.

• update_alpha() updates fill colour and/or pattern transparency.

  • It is a fork of ggplot2::fill_alpha() by @teunbrand.
  • It does not depend on {ggplot2} or {scales}.
  • It does not throw an error with a length one list of a vector of multiple colours.
  • It is available as a "standalone" file.
    You may copy its source under the permissive MIT license into your own R package by either
    using usethis::use_standalone("trevorld/gridpattern", "standalone-update_alpha.R")
    or simply copying standalone-update_alpha.R into your R directory and adding
    grDevices, grid, and rlang to the Imports of your DESCRIPTION file.

• For completeness there is now a new "fill" pattern with corresponding
  grid.pattern_fill() which draws a simple fill pattern.

• For completeness there is now a grid.pattern_none() corresponding to the previously
  supported "none" pattern which draws nothing.

Bug fixes and minor improvements

• The wave pattern no longer quietly and incorrectly ignores the frequency parameter.
  The effective wavelength of the wave pattern is now 1 / frequency instead of spacing.
  However frequency will continue to default to 1 / spacing.
• clippingPathGrob() can now more efficiently compute a rasterGrob() approximation
  via ragg::agg_capture() and for png_device functions that support
  the clipping path feature such aspng(type = "cairo")(#74).
• alphaMaskGrob() can now more efficiently compute a rasterGrob() approximation
  for png_device functions that support
  the alpha mask feature such aspng(type = "cairo")(#75).
• alphaMaskGrob() and clippingPathGrob() now
  switch back to the previously open graphics device if
  they open and close any new graphics devices.