CoolReader Engine Library

CREngine is an open source E-Book viewer library development project.

It's partially based on CoolReader2 e-book viewer code, but most parts of code are fully rewritten.

The goal is to develop small and fast e-book viewer for mobile devices as well as for desktops. Priority is low memory and CPU resource consumption.

Distribution

Source code is distributed under the terms of GNU General Public License (GPL).

Latest version is 0.6.7 (September 12, 2008)

Latest sources are available from SOURCEFORGE.NET CVS repository.

Downloads:

• CR3 binary [1250K] (Win32 executable)
• source code [380K] (library, font convertor, sample fb2 viewer for Win32API and Xlib)
• CoolReader3 and CREngine source codes on SourceForge (uses wxWidgets as GUI library)

Project homepage: http://www.coolreader.org/crengine.htm

Sample applications are supposed to be compiled using MSVC++ 6.0, cygwin or gcc, but the library itself is designed to be portable and work on most platforms. Sample viewer is currently implementer for Win32 and X.

Build

Following directory structure is used (unpack sources accordingly):

  ./crengine        -- crengine-src.zip
  ./cr3             -- cr3-src.zip
  ./wxWidgets       -- wxWidgets-X.X.tar.gz

Windows

Open .dsw files with MSVC6.0 and build them.

For wxWidgets, build Unicode Static Debug and Unicode Static configurations.

Linux and Mac Os X

Configure wxWidgets with following options:

  --enable-unicode=yes --enable-static=yes 

Authors

• Vadim Lopatin - main source code
• Alan (http://alreader.kms.ru/) - hyphenation support from AlReader
• Torque - Symbian OS support

CREngine features

• Different font engines support
  • grayscale bitmap font engine (implemented)
  • Win32 font support (partially implemented)
  • X and OpenType font support (planned)
• Soft hyphens (predefined) are supported to increase readability
• Text formatter with support of different paragraph and font styles, which allows to prepare text to be drawed
  • Hyphenation support from AlReader (http://alreader.kms.ru/)
• XML parser with support of unicode (UTF-8 and UTF-16) and 8-bit encodings
• 2 different DOM tree implementations
  • Tiny DOM - compact readonly DOM tree
    • doesn't use RAM to store document text but reads it from file by demand
    • doesn't store formatted text in memory, but generates it on the fly
    • parsed tree can be saved to file to allow fast re-opening of documents
    • compact tree structure requires minimum amount of RAM
    • optimized element names, attribute names and values string storing
  • Fast DOM (in progress, not included to distribution) - fast but compact read/write tree
    • editable document tree
    • faster implementation
    • optimized element names, attribute names and values string storing
• Styles: CSS2 subset implementation
  • only simple selectors ( element-name or universal selector * )
  • definition for properties
    • display
    • white-space
    • text-align
    • vertical-align
    • font-family
    • font-size
    • font-style
    • font-weight
    • text-indent
    • line-height
    • width
    • height
    • margin-left
    • margin-right
    • margin-top
    • margin-bottom
    • margin
    • page-wrap-before
    • page-wrap-after
    • page-wrap-inside
• DOM/CSS formatter allows to prepare document for drawing
• Sample applications
  • FB2 e-book reader for Windows
  • FB2 e-book reader for X (Linux)
• Tools
  • TrueType to grayscale bitmap font convertor

CREngine unicode antialiased bitmap fonts support

Current version of font and text rendering subsystem supports it's own unicode bitmap font format with antialiasing.

Convertor from TTF fonts is included.

Sample FictionBook2 e-book reader: FB2Test

See source code to learn how to use CREngine library.

Not supported features of FB2: images, tables.

Contacts

You can contact author via e-mail or ICQ 39190840

Alan's AlReader homepage.

 

CoolReader for LBook V2

First test version of CoolReader for LBook/Jinke V2 is ready.

CRV2 binaries viewer binaries for V2 hardware and simulator.

crengine sources

additional libraries built for V2 (zlib, libjpeg, libpng)

CRV2 sources source code for viewer

Sources of LBook FB2 plugin source code for libtxt.so replacement to read FB2 using V2 bookshelf.

Compiled libtxt.so to read FB2 binaries for simulator and device.
Replace libtxt.so with new from archive, copy crengine dir from archive to /root/crengine (fonts, styles, hyphenation files).
To read FB2 files rename them to .TXT and copy to book.

Latest binaries of V2 plugin.