Returns the positions of attachment symbols in the current diagram within the bounds of an exported image.
.getAttachmentPositionsInExpImage(/* Object */ options)
A hash of the option values that were used to create the exported image. For more information, see the exportImage() method.
A array of objects that each contain the location of an attachment symbol within an exported image generated with the specified options.
Each of these objects is a hash of the form:
id — The unique string id of an attachment referenced by the attachment symbol.
label — The text label of the attachment referenced by the attachment symbol.
top — Top coordinate (Y) of the attachment symbol.
left — Left coordinate (X) of the attachment symbol.
bottom — Bottom coordinate (Y) of the attachment symbol.
right — Right coordinate (X) of the attachment symbol.
Note that all coordinates are in pixels relative to the top left corner of the image with positive values down and right.
/*
This example assumes esdEditor is an initialized
ESDWeb object and that a diagram is loaded
*/
// Export the diagram as a png image.
var exportOptions = {
format: 'image/png',
margin: 10,
width: 800,
height: 600,
includeStructureDimensions: true,
includeFieldMeasurements: true
};
esdEditor.exportImage(exportOptions, onExport, onError);
function onExport(image) {
// The export was successful...
// The parameter "image" contains a 800 x 600 base 64
// encoded PNG image of the diagram.
// Any operations that depend on the exported image must
// be done within the body of this callback function.
// Get the attachment positions in the exported image. Note that we must use the same
// options that were used to create the image.
var attachmentPositions = esdEditor.getAttachmentPositionsInExpImage(exportOptions);
// Both the image and the positions of attachment symbols in the image are now available.
...
}
function onError(error) {
alert('Export failed: ' + error.message;
}