August 2007
Intermediate to advanced
864 pages
25h 52m
English
Content preview from Programming WPF, 2nd Edition
Become 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,
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.
Transformations
Support for high-resolution displays is an important feature of WPF. This is enabled in part by the emphasis on the use of scalable vector graphics rather than bitmaps. But as experience with GDI+ and GDI32 has shown, if scalability is not integrated completely into the graphics architecture, resolution independence is very hard to achieve consistently in practice.
WPF's support for scaling is built in at a fundamental level. Any element in the user interface can have a transformation applied, making it easy to scale or rotate anything in the user interface.
As we saw in Chapter 3, all user interface
elements have RenderTransform and
LayoutTransform properties. These are
of type Transform, which is an
abstract base class. There are derived classes implementing various
affine transformations,[95] listed in Table 13-8.
Table 13-8. Transform types
Transform class | Usage |
|---|---|
| General-purpose transform based on 3 × 3 matrix |
| Rotates around a point |
| Scales in x and/or y |
| Shears (e.g., converts a square into a rhombus) |
| Combines several transforms into one |
| Moves items by a specified vector |
Most of these are just convenience classes—you can represent all
supported transformations by the MatrixTransform class. This contains a 3 × 3
matrix, allowing any affine transformation to be used. However, the
other transform types are often easier to work with than the set of
numbers in a matrix.
Become 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,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.