June 2008
Intermediate to advanced
986 pages
27h 8m
English
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Java Version
The two Java-based processors use the same code; the stylesheet simply uses the Saxon and Xalan conventions to identify the extension class. The extension function takes as its input the secret word, the name of the created JPEG file, the font size for the text, and the width and height of the JPEG file. Given those parameters, the code chooses a font at random and creates a blank canvas of the requested size. The Java code then checks to make sure the selected font exists (because Java runs on so many non-Windows platforms, we need to make sure). Once the font is set, we measure the dimensions of the secret word written in the font at the requested font size. If the word is too wide to fit into the graphic, we reduce the font size by 2 points until the word fits inside the canvas.
Once the font and font size are set, we draw the word on the canvas and finish by drawing random lines over the text. When we’ve drawn everything on the canvas, a couple of lines of Java code write the canvas out to a JPEG file. The last few lines of code here handle any exceptions that might occur. Here’s the complete listing:
/* * HiddenWord.java */ package com.oreilly.xslt; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.FontMetrics; import java.awt.Graphics2D; import java.awt.GraphicsEnvironment; import java.awt.Rectangle; import java.awt.font.LineMetrics; import java.awt.image.BufferedImage; import java.io.FileNotFoundException; import java.io.FileOutputStream; ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.