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MeadCo's ScriptX: Custom preview zoom example

This page illustrates changing the Zoom used in preview using the SetPreviewZoom method.

Print preview is dramatically different between IE 7 and later and previous versions (i.e. IE 6 and earlier) - this includes default behaviour for scaling the preview view. In IE 6 and earlier, the view is always scaled to 75% and the user may apply their own view scaling or scale the view to fit one or two pages, or the full page width. In IE 7, the user is given control of scaling of the printed page, on screen scaling is restricted to scaling to full page width or a number of pages in the view.

Whatever the browser version, ScriptX provides the facility to specify a view scale or, for IE 7 and later only, specify the number of pages to display in the print preview.

SetPreviewZoom

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Description

Use this method to specify the Zoom to be used during print preview - this is view zooming, not print scaling.

Syntax

printing.SetPrintZoom(lZoom,,pagesX,pagesY)

Parameter	Description
lZoom	(Number) The Zoom scaling to use, either expressed as a percentage (e.g. 200 for double full size) or one of the following special values: -1 Zoom to show the full page width in the view. -2 Zoom to show the full page height in the view. -3 Zoom to show 2 full height pages in the view. 0 Zoom to show full height pages, layed out as described by the pagesX and pagesY parameters (requires the IE 7 style template). For the IE 6 and earlier style template, the default value is 75%. For IE 7 and later style template, the default value is -2.
pagesX (optional, requires the IE 7 style template)	(Number) Only used with the IE 7 style template when lZoom is 0. Specifies the number of pages to display across the view (columns).
pagesY (optional, requires the IE 7 style template)	(Number) Only used with the IE 7 style template when lZoom is 0. Specifies the number of rows of pages to display.

Example

function startPreview() {
	var z,x=0,y=0;

	if ( document.getElementById("selectTemplate").selectedIndex != 1 ) { // if not IE 7 template
		var s = document.getElementById("selectZoom");
		z = s.options[s.selectedIndex].value;
	}
	else {
		var s = document.getElementById("selectZoom");
		var s1 = document.getElementById("selectPages");

		var o = parseInt(s1.options[s1.selectedIndex].value);

		switch (o) {
			case 0: // zoomed one page
				z = s.options[s.selectedIndex].value;
				break;

			case 2: // the rest are multi-page views.
				z = 0;
				x = 2;
				y = 1;
				break;

			case 3:
				z = 0;
				x = 3;
				y = 1;
				break;

			case 6:
				z = 0;
				x = 3;
				y = 2;
				break;

			case 12:
				z = 0;
				x = 4;
				y = 3;
				break;

		}
	}

	factory.printing.SetPreviewZoom(z,x,y);
	factory.printing.Preview();
}

  

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