September 2019
Beginner
512 pages
12h 52m
English
Content preview from Flutter for Beginners
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Canvas transformations
All operations we do on Canvas, such as drawing a line or a rectangle, are oriented in a coordinate system, just like any other UI drawing system. This coordinate system has an origin. By default, this is defined by the CustomPaint widget that owns Canvas. The important thing to note is that, because of this characteristic, all of the operations we do on Canvas are affected by its current transformation. Whenever we want, we can transform the canvas to affect the subsequent operations.
Initially, Canvas has no transformation, that is, its transformation matrix are a Matrix4 identity instance.
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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.