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https://github.com/koreader/koreader
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70 lines
2.2 KiB
Plaintext
70 lines
2.2 KiB
Plaintext
KindlePDFViewer
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===============
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This is a PDF viewer application, created for usage on the Kindle e-ink reader.
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It is currently restricted to 4bpp inverse grayscale displays. It's using the
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muPDF library (see http://mupdf.com/) and its UI is scripted using Lua (see
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http://www.lua.org/).
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The application is licensed under the GPLv3 (see COPYING file).
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Building
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========
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Follow these steps:
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- install muPDF sources into subfolder "mupdf"
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- install muPDF third-party sources (see muPDF homepage) into a new subfolder
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"mupdf/thirdparty"
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- install Lua sources into subfolder "lua"
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=> note that there's a make target to do this. You need wget, unzip and git
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installed. Then just run "make fetchthirdparty".
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- adapt Makefile to your needs
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- run "make thirdparty". This will build MuPDF (plus the libraries it depends
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on) and Lua.
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- run "make". This will build the kpdfview application
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Running
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=======
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The user interface (or what's there yet) is scripted in Lua. See "reader.lua".
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It uses the Linux feature to run scripts by using a corresponding line at its
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start.
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So you might just call that script. Note that the script and the kpdfview
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binary currently must be in the same directory.
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You would then just call reader.lua, giving the document file path as its first
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argument. Run reader.lua without arguments to see usage notes.
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The reader.lua script can also show a file chooser: it will do this when you
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call it with a directory (instead of a file) as first argument.
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Device emulation
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================
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The code also features a device emulation. You need SDL headers and library
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for this. It allows to develop on a standard PC and saves precious development
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time. It might also compose the most unfriendly desktop PDF reader, depending
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on your view.
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To build in "emulation mode", you need to run make like this:
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make clean cleanthirdparty
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EMULATE_READER=1 make thirdparty kpdfview
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The reader.lua script needs a device argument in order to cope with some
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slight differences between actual readers and the emulation. Run it like
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this:
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./reader.lua -d emu /PATH/TO/PDF.pdf
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By default emulation will provide DXG resolution of 824*1200. It can be
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specified at compile time, this is example for Kindle 3:
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EMULATE_READER_W=600 EMULATE_READER_H=800 EMULATE_READER=1 make kpdfview
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