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@@ -133,48 +133,55 @@ let JpcCommonHelper = {
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}
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return rst;
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},
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- getStringLinesInArea: function(area, strVal, pdfDoc) {
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- let areaWidth = area[JV.PROP_RIGHT] - area[JV.PROP_LEFT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_LEFT] - 2;
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- // let re = /[\u4E00-\u9FA5]/g;
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- let re = /[^\x00-\xff]/ig; //普通ASCII以外的字符
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- let cStr = strVal.match(re);
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- let chnAmt = (cStr)?cStr.length:0;
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- let chnW = pdfDoc.widthOfString('一'), otherW = pdfDoc.widthOfString('_');
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- //备注: 因后台的pdfDoc判断字符串长度与前端的不一样,需要做些调整,不一次性地判断字符串长度。
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+ getStringLinesInArea: function(area, strVal, pdfDoc, chnW, otherW) {
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+ //备注: 因后台的pdf kit判断字符串长度与前端的不一样,需要做些调整,不一次性地判断字符串长度。
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// 分2种字符:中文与非中文,按照各种字符的数量分别乘以相关一个字符的宽度再累计。
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- // let txtWidth = pdfDoc.widthOfString(strVal);
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- let txtWidth = chnAmt * chnW + (strVal.length - chnAmt) * otherW;
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- let rst = parseInt(txtWidth / areaWidth);
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- if (txtWidth % areaWidth > 0) {
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- rst++;
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+ // 另判断行数还不能直接用总长度除以宽度来计算,因每一行都会有不同的余量,所以得一行行走过来判断。
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+ let rst = 0;
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+ if (strVal) {
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+ let areaWidth = area[JV.PROP_RIGHT] - area[JV.PROP_LEFT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_LEFT] - 1;
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+ let txtWidth = 0, currentW = 0;
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+ for (let sIdx = 0; sIdx < strVal.length; sIdx++) {
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+ currentW = (strVal.charCodeAt(sIdx) > 127)?chnW:otherW;
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+ txtWidth += currentW;
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+ if (txtWidth > areaWidth) {
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+ rst++;
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+ txtWidth = currentW;
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+ }
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+ if (sIdx === strVal.length - 1) {
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+ rst++;
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+ }
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+ }
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}
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if (rst === 0) rst = 1; //即使是空字符串,也得有一行啊
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return rst;
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- //备注: 其实是想用canvas的,但node canvas装起来麻烦,暂时用PDF Kit来顶用一下,以后换新方法再用
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+ //备注: 其实是想用canvas的,但node canvas装起来麻烦,暂时用PDF Kit来顶用一下,以后有更好的再换
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},
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- splitString: function (area, strVal, pdfDoc) {
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+ splitString: function (area, strVal, pdfDoc, chnW, otherW) {
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let rst = [];
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- // let re = /[\u4E00-\u9FA5]/g;
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- let re = /[^\x00-\xff]/ig; //普通ASCII以外的字符
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- let chnW = pdfDoc.widthOfString('一'), otherW = pdfDoc.widthOfString('_');
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- let areaWidth = area[JV.PROP_RIGHT] - area[JV.PROP_LEFT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_LEFT] - 2;
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- let preSIdx = 0, txtWidth = 0;
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-
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- for (let sIdx = 1; sIdx <= strVal.length; sIdx++) {
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- let tmpStr = strVal.substr(preSIdx, sIdx - preSIdx);
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- let cStr = tmpStr.match(re);
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- let chnAmt = (cStr)?cStr.length:0;
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- // let chnAmt = tmpStr.match(re).length;
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- // txtWidth = pdfDoc.widthOfString(strVal.substr(preSIdx, sIdx - preSIdx));
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- txtWidth = chnAmt * chnW + (tmpStr.length - chnAmt) * otherW;
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- if (txtWidth > areaWidth) {
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- rst.push(strVal.substr(preSIdx, sIdx - preSIdx - 1));
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- preSIdx = sIdx - 1;
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- }
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- if (sIdx === strVal.length) {
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- rst.push(strVal.substr(preSIdx, sIdx - preSIdx));
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+ if (strVal) {
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+ let areaWidth = area[JV.PROP_RIGHT] - area[JV.PROP_LEFT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_LEFT] - 1;
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+ let preSIdx = 0, txtWidth = 0;
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+ let currentW = 0;
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+ for (let sIdx = 0; sIdx < strVal.length; sIdx++) {
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+ currentW = (strVal.charCodeAt(sIdx) > 127)?chnW:otherW;
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+ txtWidth += currentW;
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+ if (txtWidth > areaWidth) {
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+ if (preSIdx < sIdx) {
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+ rst.push(strVal.substr(preSIdx, sIdx - preSIdx));
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+ preSIdx = sIdx;
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+ } else {
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+ rst.push(strVal.substr(preSIdx, 1));
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+ preSIdx = sIdx + 1;
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+ }
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+ txtWidth = currentW;
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+ }
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+ if (sIdx === strVal.length - 1) {
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+ rst.push(strVal.substr(preSIdx, strVal.length - preSIdx));
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+ }
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}
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}
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+ if (rst.length === 0) rst.push(''); //什么都没有,也得整个空串
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return rst;
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}
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};
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