Feeds

How to hack a Sony Reader

Inside the Linux-based e-book viewer

Boost IT visibility and business value

More tweaks

You’re not limited to simply altering the text that appears on some of the screens - you can actually add additional functions, though this is where things start to become somewhat less straightforward.

For a simple tweak, look at the applicationStart.xml file. You’ll see definitions near the top for the different keys, for example:

<string key="6" do="doDigit" />

for the non-numeric keys, there are entries such as:

<boolean key="0x27" do="doCenter"/>
<boolean key="0x27-hold" do="doCenter"/>

Assigning a global built-in function to one of these keys is achieved by changing the value of the do parameter. A popular tweak uses the long press on the centre of the navigation button to shut the Reader down, though you could equally choose to use it to much the audio. Just change the do= value to doDeviceShutdown or doMute if you prefer.

More complex customisations tend to rely on adding extra code in the main.xml file. Look through, and you’ll see that there’s a group tag for the different screens, as for the About screen that we tinkered with earlier. The <code> tag allows you to define specific functions for that page, each within its own <function> tag.

Look, for example, at the PAGE_GROUP, where you’ll find a function with the id “pageChanged” which updates the bottom of the screen with the current page of the current book. A similar function is found in menus.

And another popular hack adds a clock to the bottom of the screen. A call to this.shd_clock() is added at the bottom of “pageChanged”. Then, a new function shd_clock is defined, using a function tag, which starts like this:

<function id="shd_clock"><![CDATA[
var time = new Date();
var show = "";

It goes on to checks the preferences for clock display, and shows the time in the appropriate format, each time the page is changed. A companion function on the About screen uses the 0 key to toggle the clock display between off, 12 and 24 hour. It begins by using doDigit, then checking if the 0 key was pressed, and setting a preferences option appropriately.

The essential guide to IT transformation

More from The Register

next story
Top Gun display for your CAR: Heads-up fighter pilot tech
Sadly Navdy kit doesn't include Sidewinder missile to blast traffic
Apple takes blade to 13-inch MacBook Pro with Retina display
Shaves price, not screen on mid-2014 model
FEAST YOUR EYES: Samsung's Galaxy Alpha has an 'entirely new appearance'
Wow, it looks like nothing else on the market, for sure
iPhone 6 flip tip slips in Aussie's clip: Apple's 'reversible USB' leaks
New plug not compatible with official Type-C, according to fresh rumors
TV transport tech, part 1: From server to sofa at the touch of a button
You won't believe how much goes into today's telly tech
YES YES YES! Apple patents mousy, pressure-sensing iVibrator
Fanbois prepare to experience the great Cupertin-O
Steve Jobs had BETTER BALLS than Atari, says Apple mouse designer
Xerox? Pff, not even in the same league as His Jobsiness
NVIDIA claims first 64-bit ARMv8 SoC for Androids
Mile-High 'Denver' Tegra K1 successor said to rival PC performance
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Solving today's distributed Big Data backup challenges
Enable IT efficiency and allow a firm to access and reuse corporate information for competitive advantage, ultimately changing business outcomes.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.