prototyped svg reports

server/ui/svg/preserve_aspect_ratio.go

@@ -0,0 +1,70 @@
+package svg
+
+import "fmt"
+
+// TODO: consider reworking this WHOLE API/PACKAGE to make it more of a chaining API.
+
+type (
+	PreserveAspectRatio struct {
+		Align       *AlignValue
+		MeetOrSlice MeetOrSliceValue
+	}
+
+	AlignValue struct {
+		X AlignValueComponent
+		Y AlignValueComponent
+	}
+	AlignValueComponent int
+	MeetOrSliceValue    int
+)
+
+const (
+	AlignMid AlignValueComponent = iota
+	AlignMin
+	AlignMax
+
+	_ MeetOrSliceValue = iota
+	Meet
+	Slice
+)
+
+func (r PreserveAspectRatio) PrintKey() string {
+	return "preserveAspectRatio"
+}
+
+func (r PreserveAspectRatio) PrintValue() (string, bool) {
+	if mos := r.MeetOrSlice.String(); mos != "" {
+		return fmt.Sprintf(`"%s %s"`, r.Align, mos), true
+	}
+
+	return fmt.Sprintf("%q", r.Align), true
+}
+
+func (v *AlignValue) String() string {
+	if v == nil {
+		return "none"
+	}
+	return fmt.Sprintf("x%sY%s", v.X, v.Y)
+}
+
+func (v AlignValueComponent) String() string {
+	switch v {
+	case AlignMin:
+		return "Min"
+	case AlignMax:
+		return "Max"
+	default:
+		return "Mid"
+	}
+}
+
+func (v MeetOrSliceValue) String() string {
+	switch v {
+	case Meet:
+		return "meet"
+	case Slice:
+		return "slice"
+	default:
+		return ""
+	}
+}