Edouard@2878: // inline_svg.ysl2
Edouard@2878: //
Edouard@2878: // Produce Inline SVG element of resulting XHTML page.
Edouard@2779: 
edouard@2937: // Since stylesheet output namespace is xhtml, templates that output svg have to be explicitely declared as such 
edouard@2937: in xsl decl svgtmpl(match, xmlns="http://www.w3.org/2000/svg") alias template;
edouard@2937: in xsl decl svgfunc(name, xmlns="http://www.w3.org/2000/svg") alias template;
edouard@2937: 
edouard@2937: 
Edouard@2878: // Identity template :
Edouard@2878: //  - copy every attributes 
Edouard@2878: //  - copy every sub-elements
Edouard@2878: template "@* | node()", mode="inline_svg" {
Edouard@2878:   // use real xsl:copy instead copy-of alias from yslt.yml2
Edouard@2878:   if "not(@id = $discardable_elements/@id)"
Edouard@2878:       xsl:copy apply "@* | node()", mode="inline_svg";
Edouard@2878: }
Edouard@2792: 
Edouard@2878: // replaces inkscape's height and width hints. forces fit
Edouard@2878: template "svg:svg/@width", mode="inline_svg";
Edouard@2878: template "svg:svg/@height", mode="inline_svg";
Edouard@2878: svgtmpl "svg:svg", mode="inline_svg" svg {
Edouard@2878:     attrib "preserveAspectRatio" > none
Edouard@2878:     attrib "height" > 100vh
Edouard@2878:     attrib "width" > 100vw
Edouard@2878:     apply "@* | node()", mode="inline_svg";
Edouard@2878: }
Edouard@2878: // ensure that coordinate in CSV file generated by inkscape are in default reference frame
Edouard@2878: template "svg:svg[@viewBox!=concat('0 0 ', @width, ' ', @height)]", mode="inline_svg" {
Edouard@2878:     error > ViewBox settings other than X=0, Y=0 and Scale=1 are not supported
Edouard@2878: }
Edouard@2878: // ensure that coordinate in CSV file generated by inkscape match svg default unit
Edouard@2878: template "sodipodi:namedview[@units!='px' or @inkscape:document-units!='px']", mode="inline_svg" {
Edouard@2878:     error > All units must be set to "px" in Inkscape's document properties
Edouard@2878: }
Edouard@2792: 
edouard@2941: ////// Clone unlinking
edouard@2941: //
Edouard@2878: // svg:use (inkscape's clones) inside a widgets are
Edouard@2878: // replaced by real elements they refer in order to :
Edouard@2878: //  - allow finding "needle" element in "meter" widget,
Edouard@2878: //    even if "needle" is in a group refered by a svg use.
Edouard@2878: //  - if "needle" is visible through a svg:use for
Edouard@2878: //    each instance of the widget, then needle would show
Edouard@2878: //    the same position in all instances
Edouard@2878: //
Edouard@2878: // For now, clone unlinkink applies to descendants of all widget except HMI:Page
Edouard@2878: // TODO: narrow application of clone unlinking to active elements,
Edouard@2878: //       while keeping static decoration cloned
Edouard@2967: const "to_unlink", "$hmi_elements[not(@id = $hmi_pages)]/descendant-or-self::svg:use";
Edouard@2878: svgtmpl "svg:use", mode="inline_svg"
Edouard@2878: {
Edouard@2878:     choose {
Edouard@2878:         when "@id = $to_unlink/@id"
Edouard@2878:             call "unlink_clone";
Edouard@2878:         otherwise
Edouard@2878:             xsl:copy apply "@* | node()", mode="inline_svg";
Edouard@2878:     }
Edouard@2878: }
Edouard@2877: 
Edouard@2878: // to unlink a clone, an group containing a copy of target element is created
Edouard@2878: // that way, style and transforms can be preserved
Edouard@2878: const "_excluded_use_attrs" {
Edouard@2878:     name > href
Edouard@2878:     name > width
Edouard@2878:     name > height
Edouard@2878:     name > x
Edouard@2878:     name > y
Edouard@2878: }
Edouard@2878: const "excluded_use_attrs","exsl:node-set($_excluded_use_attrs)";
Edouard@2794: 
Edouard@2878: svgfunc "unlink_clone"{
Edouard@2878:     g{
Edouard@2878:         // include non excluded attributes
Edouard@2878:         foreach "@*[not(local-name() = $excluded_use_attrs/name)]"
Edouard@2878:             attrib "{name()}" > «.»
Edouard@2853: 
Edouard@2878:         const "targetid","substring-after(@xlink:href,'#')";
Edouard@2878:         apply "//svg:*[@id = $targetid]", mode="unlink_clone"{
Edouard@2878:             with "seed","@id";
Edouard@2854:         }
Edouard@2854:     }
Edouard@2878: }
Edouard@2854: 
Edouard@2878: // clone unlinking is really similar to deep-copy
Edouard@2878: // all nodes are sytematically copied
Edouard@2878: svgtmpl "@id", mode="unlink_clone" {
Edouard@2878:     param "seed";
Edouard@2878:     attrib "id" > «$seed»_«.»
Edouard@2878: }
Edouard@2854: 
Edouard@2878: svgtmpl "@*", mode="unlink_clone" xsl:copy;
Edouard@2854: 
Edouard@2878: // copying widgets would have unwanted effect
Edouard@2878: // instead widget is refered through a svg:use.
Edouard@2878: svgtmpl "svg:*", mode="unlink_clone" {
Edouard@2878:     param "seed";
Edouard@2878:     choose {
Edouard@2878:         // node recursive copy ends when finding a widget
Edouard@2878:         when "@id = $hmi_elements/@id" {
Edouard@2878:             // place a clone instead of copying
Edouard@2878:             use{
Edouard@2878:                 attrib "xlink:href" > «concat('#',@id)»
Edouard@2878:             }
Edouard@2878:         }
Edouard@2878:         otherwise {
Edouard@2878:             xsl:copy apply "@* | node()", mode="unlink_clone" {
Edouard@2878:                 with "seed","$seed";
Edouard@2854:             }
Edouard@2854:         }
Edouard@2854:     }
Edouard@2878: }
Edouard@2854: 
Edouard@2878: const "result_svg" apply "/", mode="inline_svg";
Edouard@2878: const "result_svg_ns", "exsl:node-set($result_svg)";
Edouard@2854: 
edouard@2941: emit "preamble:inline-svg" {
edouard@2941:     | let id = document.getElementById.bind(document);
edouard@2941:     | var svg_root = id("«$svg/@id»");
edouard@2941: }
edouard@2941: 
edouard@2941: emit "debug:clone-unlinking" {
edouard@2941:     |
edouard@2904:     | Unlinked :
Edouard@2878:     foreach "$to_unlink"{
Edouard@2878:         | «@id»
Edouard@2808:     }
Edouard@2753: }