Parse IDML stroke value families

crates/idml/src/model/mod.rs

@@ -17,6 +17,7 @@ mod resources;
 mod spread;
 mod story;
 
+use craft_xml::{El, Local, Node};
 pub use geometry::{MAX_PATH_POINTS, PathGeometry, PathGeometryError, PathPoint, SubPath};
 pub use resources::{
     ColorGroup, ColorSpace, GradientStop, GradientStopValue, Ink, StrokeStyle, StrokeStyleKind, Style, StyleGroup, StyleKind, StyleNode, Swatch,
@@ -28,8 +29,6 @@ pub use spread::{
 };
 pub use story::{Ace, CONTAINERS, Cell, CellOptions, Container, ContentPart, Range, Story, StoryPreference, Table, TableChild, TextNode, stories};
 
-use craft_xml::{El, Local, Node};
-
 use crate::value::{matrix, nums};
 
 /// An IDML transform: `a b c d tx ty`, inner coordinates to parent coordinates.
@@ -46,6 +45,17 @@ pub struct Values {
     pub properties: Vec<El>,
 }
 
+/// Raw IDML stroke values before the caller maps swatches and stroke styles into its model.
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct StrokeValues {
+    pub weight: Option<f64>,
+    pub color: Option<String>,
+    pub tint: Option<f64>,
+    pub kind: Option<String>,
+    pub gap_color: Option<String>,
+    pub gap_tint: Option<f64>,
+}
+
 impl Values {
     /// The attributes and `<Properties>` of `el`.
     pub fn of(el: &El) -> Values {
@@ -164,6 +174,19 @@ impl Values {
         }
         el
     }
+
+    /// Read an IDML stroke attribute family such as `TopEdgeStrokeWeight` or
+    /// `StartRowStrokeColor`.
+    pub fn stroke_values(&self, prefix: &str) -> StrokeValues {
+        StrokeValues {
+            weight: self.num(&format!("{prefix}StrokeWeight")).map(|v| v.max(0.0)),
+            color: self.value(&format!("{prefix}StrokeColor")),
+            tint: self.num(&format!("{prefix}StrokeTint")),
+            kind: self.value(&format!("{prefix}StrokeType")),
+            gap_color: self.value(&format!("{prefix}StrokeGapColor")),
+            gap_tint: self.num(&format!("{prefix}StrokeGapTint")),
+        }
+    }
 }
 
 /// `el` without its indentation: the whitespace-only text between the children of an element