{"record":{"id":"769243cfa36f3620","repo":"flxzt/rnote","slug":"failed-to-parse-color-attribute-in-xoppbackgroun","errorCode":null,"errorMessage":"Failed to parse `color` attribute in XoppBackground with id {:?}","messagePattern":"Failed to parse `color` attribute in XoppBackground with id (.+?)","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/rnote-engine/src/fileformats/xoppformat.rs","lineNumber":382,"sourceCode":"            anyhow::anyhow!(\n                \"failed to parse `type` attribute of XoppBackground with node id {:?}, could not find attribute\",\n                node.id()\n            )\n        })? {\n            \"solid\" => {\n                let style = match XoppBackgroundSolidStyle::from_xml_attr_value(node.attribute(\"style\").ok_or_else(|| {\n                    anyhow::anyhow!(\"failed to parse `style` attribute in XoppBackground with node id {:?}, could not find attribute\", node.id())\n                })?) {\n                    Ok(s) => s,\n                    Err(e) => {\n                        error!(\"Failed to retrieve the XoppBackgroundSolidStyle from `style` attribute, Err: {e:?}\");\n                        XoppBackgroundSolidStyle::Plain\n                    }\n                };\n\n                let color = XoppColor::from_backgroundcolor_attr_value(\n                    node.attribute(\"color\").ok_or_else(|| {\n                        anyhow::anyhow!(\n                            \"Failed to parse `color` attribute in XoppBackground with id {:?}\",\n                            node.id()\n                        )\n                    })?,\n                )?;\n                self.bg_type = XoppBackgroundType::Solid { color, style };\n            }\n            \"pixmap\" => {\n                let domain = match node.attribute(\"domain\").ok_or_else(|| {\n                    anyhow::anyhow!(\"Failed to parse `domain` attribute in XoppBackground with node id {:?}, could not find attribute\", node.id())\n                })? {\n                    \"absolute\" => XoppBackgroundPixmapDomain::Absolute,\n                    \"attach\" => XoppBackgroundPixmapDomain::Attach,\n                    \"clone\" => XoppBackgroundPixmapDomain::Clone,\n                    _ => {\n                        return Err(anyhow::anyhow!(\"Err while parsing `style` attribute of XoppBackground with node id {:?}, is not a valid value\", node.id()));\n                    }\n                };","sourceCodeStart":364,"sourceCodeEnd":400,"githubUrl":"https://github.com/flxzt/rnote/blob/bbc5354502ba2fc83eec2670b535348825e679a6/crates/rnote-engine/src/fileformats/xoppformat.rs#L364-L400","documentation":"For a solid XoppBackground, the 'color' attribute is mandatory and must be parseable by XoppColor::from_backgroundcolor_attr_value. This error is returned when the attribute is absent (or the parse itself fails, as the ? propagates both).","triggerScenarios":"load_from_xml on a <background type=\"solid\"> node with no 'color' attribute, or a color string that fails backgroundcolor parsing (e.g. missing alpha channel in #rrggbbaa).","commonSituations":"Files edited to remove color; exporters emitting 6-digit hex where 8-digit with alpha is expected; case/format mistakes like '0xffffff'.","solutions":["Add a color attribute in #rrggbbaa form, e.g. color=\"#ffffffff\"","Ensure the hex string includes the alpha channel (8 hex digits)","Re-save the file in Xournal++ to emit canonical color values","Check for whitespace or '#' prefix issues in the attribute"],"exampleFix":"// before\n<background type=\"solid\" style=\"plain\" color=\"#ffffff\"/>\n// after\n<background type=\"solid\" style=\"plain\" color=\"#ffffffff\"/>","handlingStrategy":"validation","validationCode":"fn valid_bg_color(node: &roxmltree::Node) -> bool {\n    node.attribute(\"color\")\n        .map(|c| c.starts_with('#') && c.len() == 9) // #rrggbbaa\n        .unwrap_or(false)\n}","typeGuard":null,"tryCatchPattern":"match XoppColor::from_backgroundcolor_attr_value(color_str) {\n    Ok(c) => c,\n    Err(e) => bail!(\"bad background color {:?}: {}\", color_str, e),\n}","preventionTips":["Use 8-digit #rrggbbaa hex with alpha in generated xopp files","Normalize color strings (lowercase hex, leading #) before parsing","Test imports against files produced by stock Xournal++"],"tags":["xml-parsing","color-parsing","xopp","rust"],"backgroundTag":"invalid-argument-format","analyzedSha":"bbc5354502ba2fc83eec2670b535348825e679a6","analyzedAt":"2026-09-08T13:20:33.747Z","contentChangedAt":"2026-09-08T13:20:33.747Z","schemaVersion":2},"datasetVersion":"2026-09-16T09:17:16.951Z"}