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<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Daniel,<div><br></div><div>The "print-scaling" attribute, as defined in the IPP Transaction-Based Printing Extensions, is already implemented in shipping IPP printers and CUPS since v1.6.</div><div><br></div><div>*If* we wanted percent scaling (which I do not support), we'd need to define a print-scaling-col attribute or something (a different name). However, since SM Scaling is not part of Print (it is specifically used for hardcopy documents) I don't think we need to tie IPP to it. And I think we will have a hard time agreeing on what the percentages are based on - remember CUPS tried both percent-of-output-media and percent-of-input-document and neither worked well.</div><div><br></div><div><br><div><div><div>On Sep 13, 2013, at 4:45 PM, Manchala, Daniel <<a href="mailto:Daniel.Manchala@xerox.com">Daniel.Manchala@xerox.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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<div><p class="MsoNormal"><span style="color:#1F497D">Michael,<o:p></o:p></span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">The Semantic Model defines Scaling thus:<o:p></o:p></span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Scaling (complex) {<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> ScalingHeight (range of int)<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> ScalingWeight (range of int)
<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> AutoScaleMode
<span style="background:yellow;mso-highlight:yellow">(keyword)</span> //values of ‘auto, ‘fit’, ‘auto-fit’, ‘fill’ and ‘none’;
<span style="background:yellow;mso-highlight:yellow">SM to change replace boolean with keyword.</span><o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> }<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Why don’t we translate this into IPP as follows?:<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">print-scaling(collection) {<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> scaling-height(integer(1:100)) //expressed as a percentage.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> scaling-width(integer(1:100))<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> auto-scale-mode(type2 keyword) //values of ‘auto’, ‘auto-fit’, ‘fit’, ‘fill’ and ‘none’<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> }<o:p></o:p></span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p><p class="MsoNormal"><span style="color:#1F497D">Daniel.<o:p></o:p></span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><o:p> </o:p></span></p>
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<div><p class="MsoListParagraph" style="margin-left:20.25pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Scaling should not be print specific.</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><o:p></o:p></span></p>
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<div><p class="MsoNormal"><o:p> </o:p></p>
</div><p class="MsoNormal">IPP = Internet Printing Protocol, so we are necessarily focused on printing. And as has been done in the past, SM can (and probably should) map print-scaling to ScalingMode (or whatever), just as print-quality is mapped to Quality, printer-resolution
=> Resolution, etc.<o:p></o:p></p>
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<div><p class="MsoNormal"><o:p> </o:p></p>
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<div><p class="MsoListParagraph" style="margin-left:20.25pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The PWG Semantic Model already defined a collection for scaling (i.e., “scaling”). Apparently we didn’t quite get it right.
The current definition allows for explicit scaling (i.e., “scaling-height” and “scaling-width”) or a boolean for “auto-scaling”. The explicit scaling member should be kept. The Boolean “auto-scaling” should be deprecating and an attribute with a unique name
(e.g., “auto-scale-mode”) should replace it with the semantics defined for “print-scaling”
</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><o:p></o:p></span></p>
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<div><p class="MsoNormal"><o:p> </o:p></p>
</div><p class="MsoNormal">FWIW, CUPS previously supported two other attributes for scaling in the past - "scaling" (scale to a percentage of the media size) and "natural-scaling" (scale to a percentage of the document size). This allowed for "poster" printing over
multiple media sheets, among other things, but had a lot of limitations and implementation issues. (BTW, we only ever supported symmetric scaling: scaling-width == scaling-height)<o:p></o:p></p>
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<div><p class="MsoNormal"><o:p> </o:p></p>
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<div><p class="MsoNormal">I *can* see the use case for copy - copy this hardcopy document and enlarge to 200% - but for print the 99% use case is "enlarge this document/image to fit/fill these (media) dimensions". In many cases there are no (reliable) physical
dimensions to work with, so saying "enlarge to 200%" has no meaning. However, you can always say "fit/fill the document data on the requested media".<o:p></o:p></p>
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<div><p class="MsoNormal"><o:p> </o:p></p>
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<div><p class="MsoNormal">Also, the current Scaling group in SM is not part of the Print service, just under the Copy, FaxIn, FaxOut, and Scan services (under <service>DocumentProcessing).<o:p></o:p></p>
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<div><p class="MsoNormal"><o:p> </o:p></p>
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<div><p class="MsoNormal">My preference is to reject this request.<o:p></o:p></p>
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<div><p class="MsoNormal"><o:p> </o:p></p>
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<div><p class="MsoNormal"><span style="font-family:"Andale Mono","serif"">_________________________________________________________</span><o:p></o:p></p>
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<div><p class="MsoNormal"><span style="font-family: 'Andale Mono', serif;">Michael Sweet, Senior Printing System Engineer, PWG Chair<o:p></o:p></span></p>
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</div><p class="MsoNormal"><o:p> </o:p></p>
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_______________________________________________<br>ipp mailing list<br><a href="mailto:ipp@pwg.org">ipp@pwg.org</a><br>https://www.pwg.org/mailman/listinfo/ipp<br></blockquote></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Andale Mono'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Andale Mono'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">_________________________________________________________<br>Michael Sweet, Senior Printing System Engineer, PWG Chair</div></span></span>
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