Area"
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| + | = 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). | ||
| + | |||
| + | |||
| + | {| class='wikitable' | width="100%" | ||
| + | ! <center>Shape</center> | ||
| + | ! <center>Coordinates / Description</center> | ||
| + | |||
| + | |- | ||
| + | | circle | ||
| + | | coords="x, y, r" | ||
| + | |||
| + | 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. | ||
| + | |||
| + | |- | ||
| + | | polygon | ||
| + | | coords="x1, y1, x2, y2, x3, y3..." | ||
| + | |||
| + | 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. | ||
| + | |||
| + | |- | ||
| + | | 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 <code>area</code> component overlap with another, the first one takes precedence. | ||
=Supported Events= | =Supported Events= | ||
| − | {| | + | {| class='wikitable' | width="100%" |
! <center>Name</center> | ! <center>Name</center> | ||
! <center>Event Type</center> | ! <center>Event Type</center> | ||
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=Use Cases= | =Use Cases= | ||
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! Version !! Description !! Example Location | ! Version !! Description !! Example Location | ||
|- | |- | ||
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=Version History= | =Version History= | ||
{{LastUpdated}} | {{LastUpdated}} | ||
| − | {| | + | {| class='wikitable' | width="100%" |
! Version !! Date !! Content | ! Version !! Date !! Content | ||
|- | |- | ||
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 |
|---|---|---|