The following PDF modification functions:
pdf_add_cropmarks() adds crop marks to the pdf (#21).pdf_add_crosshairs() adds crosshairs to the pdf (#2).pdf_add_origami() adds origami symbols to the pdf.
Currently only supports adding some origami symbols to
Boardgame Barrio's Small Board Game Jackets (#1).pdf_add_rects() adds (round)rects to the pdf (#6).pdf_clean() copies pdf file while removing temporary pdf files.pdf_compress(), pdf_rotate_pages(), and pdf_subset() wrap the {qpdf} functions of the
same name but follow the conventions of this package (i.e. input first positional argument, output second positional argument and defaults to temporary file, all other arguments must be named).pdf_gs() processes a pdf file with ghostscript.pdf_append_blank() adds blank pages to the end of a pdf file (#10).pdf_pad_paper() makes a pdf file larger by padding it (i.e. adding space to the outside margins).
The original images are not rescaled (#5).pdf_rm_crosshairs() removes crosshairs from a pdf file (#7).pdf_set_bookmarks(), pdf_set_docinfo(), and pdf_set_xmp() wrap around
{xmpdf} functions to edit pdf metadata but follow the conventions of this package
(i.e. input first positional argument, output second positional argument and defaults to temporary file, all other arguments must be named) (#8).The following PDF creation functions:
Other PDF utility functions:
ls_temp_pdfs() lists temporary pdfs while rm_temp_pdfs() removes temporary pdfs.pdf_orientation() tells whether a pdf is in portrait or landscape mode.pdf_pages() calculates an integer vector of subset of pdf pages (#9).pdf_render_raster() renders a PDF page as a raster or nativeRaster object.pdf_width() and pdf_height() get pdf page dimensions.Layout data frame functions:
layout_grid() calculates a layout data frame
for a grid of identically sized print-and-play components.layout_preset() calculates a layout data frame for a named preset.layout_names() returns the supported layout presets.{bittermelon} pixmap object functions:
pdf_render_bm_pixmap() renders a PDF page as a bittermelon::bm_pixmap() object.bm_crop_layout() crops out a print-and-play component from a layout.{grid} functions:
grid_add_cropmarks() draws crop marks around components in a layout.grid_add_crosshairs() draws crosshairs around components in a layout.grid_add_lines() draws along the edges of components in a layout.grid_add_rects() draws (rounded) rectangles around components in a layout.