RmdImgPaste

RStudio Addin: Copy images from clipboard into .Rmd files or a blogdown post.

Installation

devtools::install_github('xiaoa6435/RmdImgPaste')

Dependencies

• rstudioapi
• for linux user, xlip is needed
• for windows 7, powershell need updated to 5.1

Technical walkthrough

how to read image from clipboard?

in macos, exec script like this:

osascript -e '
  set theFile to (open for access POSIX file "test.png" with write permission)
  try
    write (the clipboard as «class PNGf») to theFile
  end try
  close access theFile'

in window

powershell -sta '
  Add-Type -AssemblyName System.Windows.Forms;,
  if ($([System.Windows.Forms.Clipboard]::ContainsImage())) {
    [System.Drawing.Bitmap][System.Windows.Forms.Clipboard]::GetDataObject(
      ).getimage().Save("test.png", [System.Drawing.Imaging.ImageFormat]::Png)
  }'

in linux (not test):

xclip -selection clipboard -t image/png -o > "test.png"

if this Addin not work, you can test if this scipt can can generate test.png file when you have a image on clipboard

where is paste image?

for a general Rmd files, all paste image in curr_path/.assets/, named like rmd-img-paste-%Y%m%d%H%M%s.png. If you don't like it, you can specify a subfloder by options(rmarkdown.paste_image_dir = 'you_floder').

for a blogdown post(.Rproj have attr like 'BuildType: Website' and in content/../.., you can override it by options(rmarkdown.is_blogdown_post = FALSE), all paste image in static/post/postname_files/, and insert code like ![](/post/postname_files/rmd-img-paste-%Y%m%d%H%M%s.png).

you can specify a baseurl by options(rmarkdown.blogdown_baseurl = 'you_baseurl').

Usage

Tools -> Modify Keyboard Shortcuts -> RmdImgPaste，Customize a shortcut (for example, cmd + v), then you can just use 'cmd + v' paste image into a blogdown post or a Rmd file

Acknowledgements

this code is based on https://github.com/Timag/imageclipr and make some changes:

• remove python dependency
• remove shiny, only shortcuts
• add support for blogdown post