= Chapter 5 Notes =

Title: '''Dealing with Sizes'''

== Summary ==

This chapter covers the consequences of different sized pixels and how we treat them.

Oh that screen drivers were built report screen size and to take unchanging units like inches and translate them based on the hardware. This would be a non-issue as we would always specify things in inches. BUT of course we would be discussing the exponential scaling curve that dictates how much you can scale down... (think dpi as a scaling factor). Then the curve might be $$Scale~Factor = B e^{-x}$$

=== Programming Concepts Summary ===

|| '''Concept''' || '''Page''' ||
|| Consequences of different sized pixels || 87-89 ||
|| Orientation changes are supported by default, but can be turned off.  || 95 ||
|| Font Sizes || 97 ||



== Programs ==

=== WhatSizePage ===

Page 91.

Concepts:

 1. Demonstrates the different sizes on different screens. Note: THIS PROGRAM DOES NOT USE DUIs! Instead it uses 
 1. Demonstrates the event pattern by responding to size changes.
 1. Demonstrates how to use a timer to fire events.
 1. Dealing with Accessibility configuration changes.

Classes: 

No new classes. 

=== MetricalBoxViewPage ===

Page 96

Concepts:

 1. Demonstrates the differences in platforms when setting the same value for the DUI unit on different platforms using a BoxView.

No new classes.

=== FontSizesPage ===

Page 97

Concepts:

 1. Demonstrates the named font sizes compared to point font sizes. 

No new classes.

=== EstimatedFontSizePage ===

Page 100

Concepts:

 1. Demonstrates sizing fonts based on view size.

No new classes.

=== FitToSizeClockPage ===

Page 103 

Concepts:

 1. Lambda expressions
 1. Device.StartTimer demonstrated. 

Classes:

 1. Device.StartTimer - Allows you to fire and event on a timer. 

=== AccessibilityTestPage ===

'''Skip in class'''

Page 106

Concepts:

 1. What happens when an accessibility setting has changed? Larger Text.

No new classes.

=== EmpiricalFontSizePage ===

Page 109

Concepts:

 1. Divide and conquer method Log(n)... See notes on PDF.