|
Property Expressions are a way that you can dynamically change object properties based on key expressions.
A few simple tricks using Property Expressions
Properties
Option
|
Function
|
URL
|
Used for Macromedia Flash based reports. Presently N/A.
|
IsVisible
|
1 makes the shape visible, 0 makes the shape invisible.
|
Font
|
String based font name to use. Property should evaluate to a string that is a font name in the Font Attribute Panel.
|
FontColor/FillColor/StrokeColor
|
Changes color of font, fill, and stroke, respectively. Expects colors by name or "#RRGGBB" (Hex) format.
|
X/Y
|
Object position that expects a number.
|
Width/Height
|
Dynamically Size an object
|
Simple Example
Playing with Property Expressions to illustrate their use.
Dynamic Example
We will use 2 object's Property Expressions to illustrate their uses.
| • | Add an image of a check box. This is included under Builtin/icons/check2.png. |
| • | We want a check box is the employees income is greater than the arithmetic average of employees. |
| • | Set the isVisible property to "income > Up.average.income". Notice that we neglect the @ for properties in the Inspector Panel. |
| • | Add a rectangle with a gradient fill. |
| • | We want the width of the rectange to be 100 pixels * the ratio of the employee's income versus the employee with the max income. |
| • | Set the Width property to "100 * income / Up.max.income" |
Playing with Property Expressions to illustrate their use.
TIP
|
Get creative with property expressions. They're very powerful!
|
| 
Property Expresssions