add AddShape api

apishape.go

@@ -0,0 +1,73 @@
+package docx
+
+import (
+	"strconv"
+	"sync/atomic"
+)
+
+// AddShape adds wsp named drawing to paragraph
+func (p *Paragraph) AddShape(w, h int64, name, bwMode, prst string, elems []interface{}) (*Run, error) {
+	idn := int(atomic.AddUintptr(&p.file.docID, 1))
+	id := strconv.Itoa(int(p.file.IncreaseID(name)))
+	d := &Drawing{
+		Anchor: &WPAnchor{
+			LayoutInCell: 1,
+			AllowOverlap: 1,
+
+			SimplePosXY: &WPSimplePos{},
+			PositionH: &WPPositionH{
+				RelativeFrom: "column",
+			},
+			PositionV: &WPPositionV{
+				RelativeFrom: "paragraph",
+			},
+
+			Extent: &WPExtent{
+				CX: w,
+				CY: h,
+			},
+			EffectExtent: &WPEffectExtent{},
+			WrapNone:     &struct{}{},
+			DocPr: &WPDocPr{
+				ID:   idn,
+				Name: name + " " + id,
+			},
+			CNvGraphicFramePr: &WPCNvGraphicFramePr{},
+			Graphic: &AGraphic{
+				XMLA: XMLNS_DRAWINGML_MAIN,
+				GraphicData: &AGraphicData{
+					URI: XMLNS_WPS,
+					Shape: &WPSWordprocessingShape{
+						CNvCnPr: &WPSCNvCnPr{
+							ConnShapeLocks: &struct{}{},
+						},
+						SpPr: &WPSSpPr{
+							BWMode: bwMode,
+
+							Xfrm: AXfrm{
+								Ext: AExt{
+									CX: w,
+									CY: h,
+								},
+							},
+							PrstGeom: APrstGeom{
+								Prst: prst,
+							},
+							NoFill: &struct{}{},
+							Elems:  elems,
+						},
+						BodyPr: &WPSBodyPr{},
+					},
+				},
+			},
+		},
+	}
+	c := make([]interface{}, 1, 64)
+	c[0] = d
+	run := &Run{
+		RunProperties: &RunProperties{},
+		Children:      c,
+	}
+	p.Children = append(p.Children, run)
+	return run, nil
+}