feat: add shade effect

structeffects.go

@@ -0,0 +1,74 @@
+package docx
+
+import "encoding/xml"
+
+// RunStyle contains styling for a run
+type RunStyle struct {
+	XMLName xml.Name `xml:"w:rStyle,omitempty"`
+	Val     string   `xml:"w:val,attr"`
+}
+
+// Style contains styling for a paragraph
+type Style struct {
+	XMLName xml.Name `xml:"w:pStyle,omitempty"`
+	Val     string   `xml:"w:val,attr"`
+}
+
+// Color contains the sound of music. :D
+// I'm kidding. It contains the color
+type Color struct {
+	XMLName xml.Name `xml:"w:color,omitempty"`
+	Val     string   `xml:"w:val,attr"`
+}
+
+// Size contains the font size
+type Size struct {
+	XMLName xml.Name `xml:"w:sz,omitempty"`
+	Val     string   `xml:"w:val,attr"`
+}
+
+// Justification contains the way of the horizonal alignment
+//
+//	w:jc 属性的取值可以是以下之一：
+//		start：左对齐。
+//		center：居中对齐。
+//		end：右对齐。
+//		both：两端对齐。
+//		distribute：分散对齐。
+type Justification struct {
+	XMLName xml.Name `xml:"w:jc,omitempty"`
+	Val     string   `xml:"w:val,attr"`
+}
+
+// Shade is an element that represents a shading pattern applied to a document element.
+type Shade struct {
+	XMLName       xml.Name `xml:"w:shd,omitempty"`
+	Val           string   `xml:"w:val,attr,omitempty"`
+	Color         string   `xml:"w:color,attr,omitempty"`
+	Fill          string   `xml:"w:fill,attr,omitempty"`
+	ThemeFill     string   `xml:"w:themeFill,attr,omitempty"`
+	ThemeFillTint string   `xml:"w:themeFillTint,attr,omitempty"`
+}
+
+// UnmarshalXML ...
+func (s *Shade) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	for _, attr := range start.Attr {
+		switch attr.Name.Local {
+		case "val":
+			s.Val = attr.Value
+		case "color":
+			s.Color = attr.Value
+		case "fill":
+			s.Fill = attr.Value
+		case "themeFill":
+			s.ThemeFill = attr.Value
+		case "themeFillTint":
+			s.ThemeFillTint = attr.Value
+		default:
+			// ignore other attributes
+		}
+	}
+	// Consume the end element
+	_, err := d.Token()
+	return err
+}