Area"
m ((via JWB)) |
m ((via JWB)) |
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| Line 32: | Line 32: | ||
| coords="x, y, r" | | coords="x, y, r" | ||
| − | where < | + | where <code>x</code> and <code>y</code> define the position of the circle’s center and <code>r</code> is the radius in pixels. |
|- | |- | ||
| Line 38: | Line 38: | ||
| coords="x1, y1, x2, y2, x3, y3..." | | coords="x1, y1, x2, y2, x3, y3..." | ||
| − | where each pair of < | + | where each pair of <code>x</code> and <code>y</code> define a point of the polygon. At least three pairs of coordinates are required to define a triangle. The polygon is automatically closed, so it is not necessary to repeat the first coordinate at the end of the list to close the region. |
|- | |- | ||
| Line 47: | Line 47: | ||
|} | |} | ||
| − | If the coordinates in one < | + | If the coordinates in one <code>area</code> component overlap with another, the first one takes precedence. |
=Supported Events= | =Supported Events= | ||
Latest revision as of 10:40, 12 January 2022
Area
Employment/Purpose
An area of a image map. Instead of the application processing the coordinates, developers can add the area components as children of a imagemap component thus defining a target. The imagemap component will translate the mouse pointer coordinates into a logical name ie. The id of the area the user clicked.
Example
<imagemap src="/img/sun.jpg" onClick="alert(event.area)">
<area id="First" coords="0, 0, 100, 100"/>
<area id="Second" shape="circle" coords="200, 200, 100"/>
</imagemap>
The shape Property
An area component supports three kinds of shapes: circle, polygon and rectangle. The coordinates of the mouse position are screen pixels counted from the upper-left corner of the image beginning with (0, 0).
| circle | coords="x, y, r"
where |
| polygon | coords="x1, y1, x2, y2, x3, y3..."
where each pair of |
| rectangle | coords="x1, y1, x2, y2"
where the first coordinate pair is one corner of the rectangle and the other pair is the corner diagonally opposite. A rectangle is just a shortened way of specifying a polygon with four vertices. |
If the coordinates in one area component overlap with another, the first one takes precedence.
Supported Events
| None | None |
- Inherited Supported Events: AbstractComponent
Supported Children
*None
Use Cases
| Version | Description | Example Location |
|---|---|---|
| 5.0.2 | Area in Imagemap with href | http://www.zkoss.org/forum/listComment/3016 |
Version History
| Version | Date | Content |
|---|---|---|