-import { isBoxedPrimitive, isKeyObject, isStringObject } from "util/types";
import {tkTree} from "../parser";
-import {FontStyle, TextStyle, TextWeight, fontStyleTofont} from "../canva";
-import { JSDOM } from "jsdom";
+import {FontStyle, TextStyle, TextWeight, fontStyleTofont, fontPathPSNamePair} from "../canva";
import * as fontkit from "fontkit";
+import * as breakLines from "./breakLines";
+const PDFDocument = require('pdfkit');
+import * as fs from "fs";
+import { Style } from "util";
+import { time } from "console";
+
/**
* TYPES
BTT,
}
+/**
+ * Horizonal glue.
+ * - stretchFactor : the stretch factor in float
+ */
+export interface HGlue{
+ stretchFactor: number
+}
+
+export interface BreakPoint{
+ original : BoxesItem,
+ newLined : BoxesItem
+}
+
+export type BoxesItem = HGlue | Box | BreakPoint | BoxesItem[] ;
+
/**
* frame box is a subclass of box
* - directionInsideLine : text direction inside a line
/**
* a basic Box
- * - x :
- * - y :
+ * - x : pt
+ * - y : pt
* - textStyle :
* - direction :
- * - width : x_advance
+ * - width : x_advance pt
* - content :
*/
export interface Box{
direction : Direction.TTB,
baseLineskip : ptToPx(15),
textStyle : defaultTextStyle,
- x : A4_IN_PX.width * 0.10,
- y : A4_IN_PX.height * 0.10,
- width : A4_IN_PX.width * 0.80,
- height : A4_IN_PX.height * 0.80,
+ x : A4_IN_PX.width * 0.10 ,
+ y : A4_IN_PX.height * 0.10 ,
+ width : A4_IN_PX.width * 0.80 ,
+ height : A4_IN_PX.height * 0.80 ,
content : null,
};
for (let i = 0; i < arr.length; i++){
var item = arr[i];
if (!Array.isArray(item) && item.match(spacePattern)){
- result.push([ 'bp', item, "" ]); // push a newline command to the result `tkTree`
+ // push a breakpoint command to the result `tkTree`
+ result.push([ 'bp', [["hglue", "0.1"], item] , "" ]);
}
else{
result.push(item);
return result;
}
+
+
/**
* calculate the text width and Height with a given `TextStyle`
* @param preprocessed
* @param defaultFontStyle
*/
-export async function calculateTextWidthHeight(element : tkTree, style : TextStyle): Promise<any> {
+export async function calculateTextWidthHeight(element : tkTree, style : TextStyle): Promise<BoxesItem[]> {
var res = [];
+ var styleCache = {};
+ var fontCache = {};
for (var i=0; i<element.length; i++){
- res.push(await calculateTextWidthHeightAux(element[i], style));
+ let item = await calculateTextWidthHeightAux(element[i], style, <TextStyle>styleCache, <fontkit.Font>fontCache);
+ styleCache = item[1];
+ fontCache = item[2];
+ res.push(item[0]);
}
- console.log(res);
+ res = res.flat();
return res;
}
* @param preprocessed
* @param defaultFontStyle
*/
-export async function calculateTextWidthHeightAux(element : tkTree, style : TextStyle): Promise<any> {
- var result : any = [];
-
+export async function calculateTextWidthHeightAux(element : tkTree,
+ style : TextStyle,
+ styleCache : TextStyle,
+ fontCache : fontkit.Font): Promise<[BoxesItem, TextStyle, fontkit.Font] > {
+ var result : BoxesItem = [];
+ var font;
+
+ if (style === styleCache){
+ font = fontCache;
+ }else {
let fontPair = fontStyleTofont(style);
+
if (fontPair.path.match(/\.ttc$/)){
- var font = await fontkit.openSync(fontPair.path, fontPair.psName);
+ font = await fontkit.openSync(fontPair.path, fontPair.psName);
+ styleCache = style;
+ fontCache = font;
+
}
else{
- var font = await fontkit.openSync(fontPair.path);
+ font = await fontkit.openSync(fontPair.path);
+ styleCache = style;
+ fontCache = font;
}
+
+
+
+ }
+
+
if (!Array.isArray(element)){
var run = font.layout(element, undefined, undefined, undefined, "ltr");
y : null,
textStyle : style,
direction : Direction.LTR,
- width : (runGlyphsItem.advanceWidth)*(style.size)/1000,
- height : (runGlyphsItem.bbox.maxY - runGlyphsItem.bbox.minY)*(style.size)/1000,
+ width : (runGlyphsItem.advanceWidth)*(style.size)/1000 * 0.75, // in pt
+ height : (runGlyphsItem.bbox.maxY - runGlyphsItem.bbox.minY)*(style.size)/1000 * 0.75, // in pt
content : element[j],
minX : runGlyphsItem.bbox.minX,
maxX : runGlyphsItem.bbox.maxX,
result.push(item);
}
- return result;
+ return [result, styleCache, fontCache];
}else if(element[0] == "bp"){
- let beforeNewLine = await calculateTextWidthHeightAux(element[1], style);
- let afterNewLine = await calculateTextWidthHeightAux(element[2], style);
- return ["bp", beforeNewLine, afterNewLine];
- }else{
- return calculateTextWidthHeight(element[1], style);
+
+ var beforeNewLine = (await calculateTextWidthHeightAux(element[1], style, styleCache, fontCache))[0];
+ if (Array.isArray(beforeNewLine)){
+ beforeNewLine = beforeNewLine.flat();
+ }
+
+ let afterNewLine = (await calculateTextWidthHeightAux(element[2], style, styleCache, fontCache))[0];
+ if (Array.isArray(afterNewLine)){
+ afterNewLine = afterNewLine.flat();
+ }
+
+ let breakPointNode : BreakPoint = {
+ original : beforeNewLine,
+ newLined : afterNewLine,
+ }
+
+ return [breakPointNode, styleCache, fontCache];
+ }else if(element[0] == "hglue" && !Array.isArray(element[1])){
+ let hGlue : HGlue = {stretchFactor : parseFloat(element[1])}
+ return [hGlue, styleCache, fontCache];
+ }
+ else{
+ return [await calculateTextWidthHeight(element, style), styleCache, fontCache];
}
}
this.preprocessors.push(f);
}
- public generatePdf(){
+ public async generatePdf(){
+
// preprocessed
var preprocessed = this.mainStream;
for (var i = 0; i<this.preprocessors.length; i++){
preprocessed = this.preprocessors[i](preprocessed, this);
}
+
// generate the width and height of the stream
- let defaultFontStyle : TextStyle = this.attrs["defaultFrameStyle"].textStyle;
- calculateTextWidthHeight(preprocessed, defaultFontStyle);
+ let defaultFontStyle : TextStyle = this.attrs.defaultFrameStyle.textStyle;
+
+
+ let a = await calculateTextWidthHeight(preprocessed, defaultFontStyle);
+
+ let breakLineAlgorithms = new breakLines.BreakLineAlgorithm();
+
+ let segmentedNodes = breakLineAlgorithms.segmentedNodes(a, this.attrs.defaultFrameStyle.width);
+
+ let segmentedNodesToBox =
+ this.segmentedNodesToFrameBox(segmentedNodes, <FrameBox>this.attrs.defaultFrameStyle);
+
+
+ let boxesFixed = this.fixenBoxesPosition(segmentedNodesToBox);
+
+
+
+
+ // generate pdf
+ const doc = new PDFDocument({size: 'A4'});
+ doc.pipe(fs.createWriteStream('output.pdf'));
+ this.grid(doc);
+
+ let styleCache : any = {};
+ let fontPairCache : fontPathPSNamePair = {path : "", psName : ""};
+ await this.putText(doc, boxesFixed, <TextStyle>styleCache, fontPairCache);
+ // putChar
+ doc.end();
+
- // TODO
- console.log(preprocessed);
+ }
+
+ async putText(doc : PDFKit.PDFDocument, box : Box, styleCache : TextStyle,
+ fontPairCache : fontPathPSNamePair):
+ Promise<[PDFKit.PDFDocument, TextStyle, fontPathPSNamePair]>{
+ var fontPair;
+
+
+ if (box.textStyle !== null){
+
+ if(box.textStyle == styleCache){
+ fontPair = fontPairCache;
+ }else{
+ fontPair = fontStyleTofont(box.textStyle);
+ styleCache = box.textStyle;
+ fontPairCache = fontPair;
+
+ if (fontPair.path.match(/\.ttc$/g)){
+ doc
+ .font(fontPair.path, fontPair.psName)
+ .fontSize(box.textStyle.size * 0.75);}
+ else{
+ doc
+ .font(fontPair.path)
+ .fontSize(box.textStyle.size * 0.75); // 0.75 must added!
+ }
+ }
+
+ if (box.textStyle.color !== undefined){
+ doc.fill(box.textStyle.color);
+ }
+
+ if (Array.isArray(box.content)){
+ for (var k=0; k<box.content.length; k++){
+
+ let tmp = await this.putText(doc, box.content[k], styleCache, fontPairCache);
+ doc = tmp[0];
+ styleCache = tmp[1];
+ fontPairCache = tmp[2];
+ }
+ }else if (box.content !== null){
+ await doc.text(box.content,
+ (box.x!==null? box.x: undefined),
+ (box.y!==null? box.y: undefined));
+ }
+
+ }
+
+
+ return [doc, styleCache, fontPairCache];
+ };
+
+
+
+ private grid(doc: any) {
+ for (var j = 0; j < A4_IN_PX.width; j += 5) {
+ if (j % 50 == 0) {
+ doc.save().fill('#000000')
+ .fontSize(8).text(j.toString(), j*0.75, 50);
+
+ doc
+ .save()
+ .lineWidth(0.4)
+ .strokeColor("#dddddd")
+ .moveTo(j*0.75, 0)
+ .lineTo(j*0.75, 1000)
+ .stroke();
+ }
+
+ doc
+ .save()
+ .lineWidth(0.2)
+ .strokeColor("#dddddd")
+ .moveTo(j*0.75, 0)
+ .lineTo(j*0.75, 1000)
+ .stroke();
+ }
+
+ for (var i = 0; i < 1050; i += 5) {
+ if (i % 50 == 0) {
+ doc.save()
+ .fontSize(8).text(i.toString(), 50, i*0.75);
+
+ doc
+ .save()
+ .lineWidth(0.4)
+ .strokeColor("#bbbbbb")
+ .moveTo(0, i*0.75)
+ .lineTo(1000, i*0.75)
+ .stroke();
+ }
+ doc
+ .save()
+ .lineWidth(0.2)
+ .strokeColor("#bbbbbb")
+ .moveTo(0, i*0.75)
+ .lineTo(1000, i*0.75)
+ .stroke();
+ }
+ doc
+ .save()
+ .moveTo(0, 200)
+ .lineTo(1000, 200)
+ .fill('#FF3300');
+ }
+
+ /**
+ * make all the nest boxes's position fixed
+ * @param box the main boxes
+ * @returns the fixed boxes
+ */
+ fixenBoxesPosition(box : Box) : Box{
+ var currX : number = (box.x!==null?box.x:0); // current x
+ var currY : number =(box.y!==null?box.y:0); // current y
+ if (Array.isArray(box.content)){
+ for (var i=0; i<box.content.length; i++){
+ if (box.direction == Direction.LTR){
+ box.content[i].x = currX;
+ box.content[i].y = currY;
+ let elementWidth = box.content[i].width;
+ if(elementWidth !== null){
+ currX += elementWidth;
+ }
+
+ }
+ if (box.direction == Direction.TTB){
+ box.content[i].x = currX;
+ box.content[i].y = currY;
+ let elementHeight = box.content[i].height;
+ if(elementHeight !== null){
+ currY += elementHeight;
+ }
+
+ }
+
+
+ box.content[i] = this.fixenBoxesPosition(box.content[i]);
+ }
+ }
+
+ return box;
+ }
+
+ /**
+ * input a `segmentedNodes` and a layed `frame`, return a big `Box` that nodes is put in.
+ * @param segmentedNodes the segmentnodes to be input
+ * @param frame the frame to be layed out.
+ * @returns the big `Box`.
+ */
+ segmentedNodesToFrameBox(segmentedNodes : BoxesItem[][], frame : FrameBox) : Box{
+ let baseLineskip = frame.baseLineskip;
+ let boxArrayEmpty : Box[] = [];
+ let bigBox : Box = {
+ x : (frame.x !==null? frame.x * 0.75 : null),
+ y : (frame.y !==null? frame.y * 0.75 : null),
+ textStyle : frame.textStyle,
+ direction : frame.direction,
+ width : frame.width,
+ height :frame.height,
+ content : boxArrayEmpty,
+ }
+
+ var bigBoxContent : Box[] = boxArrayEmpty;
+
+ let segmentedNodesFixed = segmentedNodes.map((x)=>this.removeBreakPoints
+(x).flat());
+ let segmentedNodeUnglue = segmentedNodesFixed.map((x)=>this.removeGlue(x, frame).flat());
+
+ for (var i=0; i<segmentedNodeUnglue.length; i++){
+ var currentLineSkip = baseLineskip;
+ var glyphMaxHeight = this.getGlyphMaxHeight(segmentedNodesFixed[i]);
+ if (currentLineSkip === null || glyphMaxHeight >currentLineSkip ){
+ currentLineSkip = glyphMaxHeight;
+ }
+
+ var currentLineBox : Box = {
+ x : null,
+ y : null,
+ textStyle : defaultTextStyle,
+ direction : frame.directionInsideLine,
+ width : frame.width,
+ height : currentLineSkip,
+ content : <Box[]>segmentedNodeUnglue[i],
+ }
+
+ bigBoxContent.push(currentLineBox);
+
+ }
+
+ bigBox.content = bigBoxContent;
+
+ return bigBox;
+ }
+
+ /**
+ * get the max height of the glyph`[a, b, c]`
+ * @param nodeLine the node line [a, b, c, ...]
+ * @returns
+ */
+ getGlyphMaxHeight(nodeLine : BoxesItem[]) : number{
+ let segmentedNodeLineHeight = nodeLine.map((x : BoxesItem)=>{if ("height" in x && x.height > 0.0){return x.height}else{return 0.0}});
+ let maxHeight = Math.max(...segmentedNodeLineHeight);
+ return maxHeight;
+ }
+
+ removeGlue(nodeLine : BoxesItem[], frame : FrameBox) : BoxesItem[]{
+ let breakLineAlgorithms = new breakLines.BreakLineAlgorithm();
+ let glueRemoved = nodeLine.filter((x)=>!breakLineAlgorithms.isHGlue(x));
+ let onlyGlue = nodeLine.filter((x)=>breakLineAlgorithms.isHGlue(x));
+ let sumStretchFactor = onlyGlue.map((x)=>{if("stretchFactor" in x){ return x.stretchFactor} else{return 0;}})
+ .reduce((acc, cur)=>acc+cur , 0);
+
+ let glueRemovedWidth = glueRemoved.map((x)=>{if("width" in x){ return x.width} else{return 0;}})
+ .reduce((acc, cur)=>acc+cur , 0);
+ let offset = frame.width * 0.75 - glueRemovedWidth;
+ var res = [];
+ for (var i=0; i<nodeLine.length; i++){
+ var ele = nodeLine[i];
+ if (breakLineAlgorithms.isHGlue(ele)){
+ let tmp : Box = {
+ x : null,
+ y : null,
+ textStyle : null,
+ direction : frame.directionInsideLine,
+ //width : 0, // ragged
+ width : ele.stretchFactor / sumStretchFactor * offset,
+ height : 0,
+ content : "",
+
+ }
+
+ res.push(tmp);
+ }else{
+ res.push(ele);
+ }
+ }
+
+ return res;
+ }
+
+ /**
+ * remove breakpoints
+ * @param boxitemline boxitem in a line with a breakpoint
+ * @returns boxitemline with break points removed
+ */
+ removeBreakPoints(boxitemline : BoxesItem[]) : BoxesItem[]{
+ var res : BoxesItem[] = [];
+ let breakLineAlgorithms = new breakLines.BreakLineAlgorithm();
+
+ for (var i = 0; i<boxitemline.length; i++){
+ let ele = boxitemline[i];
+ if (breakLineAlgorithms.isBreakPoint(ele)){
+ if (i == boxitemline.length-1){
+ res.push(ele.newLined);
+ }else{
+ res.push(ele.original);
+ }
+ }else{
+ res.push(ele);
+ }
+ }
+
+ return res;
}
}
+
/*
export let a = new Clo();
export default a; */
\ No newline at end of file
projects / clo / blobdiff