//解析需要打印的内容
//需要解析子结构,深度遍历->广度遍历
//cur:解析树中的当前节点
//par:父节点
func parsePrintContent(cur dom.Element, par PrintInterface, p *PageSetting) PrintInterface {
var i int
var (
n dom.Node
t dom.Element
z PrintInterface
prev PrintInterface
te dom.Text
)
f := cur.ChildNodes()
for i = 0; i < len(f); i++ {
n = f[i]
z = nil
switch n.Kind() {
case dom.ElementKind:
t = n.(dom.Element)
utils.Info("find element %s", t.Name())
switch t.Name() {
case "Br":
z = parseBrElement(t, p)
case "Table":
z = parseTableElement(t, p)
case "Rect":
z = parseRectElement(t, p)
case "Tr":
z = parseTrElement(t, p)
case "Td":
z = parseTdElement(t, p)
case "Bold":
z = parseBoldElement(t, p)
case "Sup":
z = parseSupElement(t, p)
case "Sub":
z = parseSubElement(t, p)
case "Underline":
z = parseUnderElement(t, p)
case "Doubleheight":
z = parseDoubleHeightElement(t, p)
case "Doublewidth":
z = parseDoubleWidthElement(t, p)
default:
utils.Error("can't find element name: %s", t.Name())
continue
}
case dom.TextKind:
te = n.(dom.Text)
t := strings.TrimSpace(te.Data())
//可能是换行符
//if t == "" || strings.HasPrefix(t, "\r") || strings.HasPrefix(t, "\n") {
//utils.Info("detect text line character,text is %s", te.Data())
//continue
// changed by jinsl 20151222
if t == "" {
utils.Info("detect text line character,text is null")
continue
} else if strings.HasPrefix(t, "\r") {
utils.Info("detect text line character,text is \\r")
continue
} else if strings.HasPrefix(t, "\n") {
utils.Info("detect text line character,text is \\n")
continue
} else {
utils.Info("find text node,content %s", te.Data())
z = parseTextNode(te, p)
}
default:
utils.Debug("find default node %s ,kind %d", n.String(), n.Kind())
}
if z == nil {
continue
}
if par != nil {
par.AddChild(z)
z.SetParent(par)
}
//加入到列表
if prev == nil {
prev = z
}
}
return prev
}
//解析Text元素,会嵌套其它元素
//解析完后会进行计算
func parseTextNode(cur dom.Text, p *PageSetting) *PrintText {
z := NewPrintText(0, 0)
z.SetName("Text")
z.Con = cur.Data()
return z
}