June 2005
Beginner to intermediate
336 pages
6h 29m
English
Content preview from Java™ After Hours: 10 Projects You'll Never Do at WorkBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Handling the Mouse
Each figure is defined by a “mouse pressed” action, which sets a point named start, and a “mouse released” action, which sets a point named end. When the mouse is released, any figure Painter is capable of drawing can be drawn—including a line, rectangle, ellipse, and so on—because start and end define the region in which the figure should be drawn.
When the user presses the mouse, the mouse position is recorded in the start point, and a flag indicating the state of the mouse, mouseUp, is set to false. While the user drags the mouse, Painter will draw the current graphics figure, expanding or reducing it to follow the mouse movements interactively. To translate between window coordinates (used when the mouse is being dragged) ...
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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.