{"record":{"id":"c5e7c82474d00109","repo":"flxzt/rnote","slug":"rendering-rsvg-document-failed-err-e","errorCode":null,"errorMessage":"rendering rsvg document failed, Err: {e:?}","messagePattern":"rendering rsvg document failed, Err: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/rnote-engine/src/svg.rs","lineNumber":199,"sourceCode":"            false,\n        );\n        let stream = gio::MemoryInputStream::from_bytes(&glib::Bytes::from(svg_data.as_bytes()));\n        let handle = rsvg::Loader::new()\n            .with_unlimited_size(true)\n            .read_stream(&stream, None::<&gio::File>, None::<&gio::Cancellable>)\n            .context(\"reading stream to rsvg loader failed.\")?;\n        let renderer = rsvg::CairoRenderer::new(&handle);\n        renderer\n            .render_document(\n                cx,\n                &cairo::Rectangle::new(\n                    self.bounds.mins[0],\n                    self.bounds.mins[1],\n                    self.bounds.extents()[0],\n                    self.bounds.extents()[1],\n                ),\n            )\n            .map_err(|e| anyhow::anyhow!(\"rendering rsvg document failed, Err: {e:?}\"))?;\n        Ok(())\n    }\n\n    /// Generate an image from an Svg.\n    ///\n    /// Using rsvg for rendering.\n    pub fn gen_image(&self, image_scale: f64) -> Result<Image, anyhow::Error> {\n        let mut bounds = self.bounds;\n        bounds.ensure_positive();\n        bounds.assert_valid()?;\n\n        let svg_data = rnote_compose::utils::wrap_svg_root(\n            self.svg_data.as_str(),\n            Some(bounds),\n            Some(bounds),\n            false,\n        );\n        let width_scaled = ((bounds.extents()[0]) * image_scale).round() as u32;","sourceCodeStart":181,"sourceCodeEnd":217,"githubUrl":"https://github.com/flxzt/rnote/blob/bbc5354502ba2fc83eec2670b535348825e679a6/crates/rnote-engine/src/svg.rs#L181-L217","documentation":"Thrown by Svg::draw_to_cairo when rsvg's CairoRenderer::render_document fails to render the SVG onto the given cairo context. librsvg parses and renders the document; invalid SVG content or a cairo context in an error state aborts rendering.","triggerScenarios":"render_document is called with malformed SVG data (bad XML, invalid svg_data after wrap_svg_root), a cairo context that already has an error status, or an invalid viewport rectangle.","commonSituations":"Exporting a corrupted/stitched-together SVG (merged fragments producing invalid XML), drawing onto a failed surface, or NaN/invalid bounds producing a bad viewport rect.","solutions":["Validate the SVG string parses (e.g. via usvg::Tree::from_str) before rendering","Check self.bounds is finite and the viewport rectangle is valid","Confirm the target cairo::Context/surface is not already in an error state","Log the wrapped rsvg::Error for the specific parse/render failure"],"exampleFix":"// before\nrenderer.render_document(cx, &rect).map_err(|e| anyhow::anyhow!(\"rendering rsvg document failed, Err: {e:?}\"))?;\n// after\nif let Err(e) = renderer.render_document(cx, &rect) {\n    anyhow::bail!(\"rendering rsvg document failed: {e:#}; svg_data len={}\", self.svg_data.len());\n}","handlingStrategy":"validation","validationCode":"if self.svg_data.trim().is_empty() { anyhow::bail!(\"empty svg data\"); }\nif !self.bounds.extents().iter().all(|v| v.is_finite() && *v > 0.0) { anyhow::bail!(\"invalid bounds\"); }","typeGuard":"fn valid_bounds(b: &Aabb) -> bool { b.extents().iter().all(|v| v.is_finite() && *v >= 0.0) }","tryCatchPattern":"if let Err(e) = renderer.render_document(cx, &rect) {\n    log::error!(\"rsvg render failed: {e:?}\");\n    return Err(e).context(\"rendering rsvg document failed\");\n}","preventionTips":["Run exported SVGs through usvg to validate them before rendering","Keep merged SVG fragments syntactically complete (valid XML)","Check cairo context status before rendering"],"tags":["rsvg","svg","rendering"],"backgroundTag":"invalid-json-response","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"}