import {tkTree} from "../parser";
-import {FontStyle, TextStyle, TextWeight, fontStyleTofont} from "../canva";
+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";
+import {memfs} from "memfs";
/**
TTB,
BTT,
}
-
/**
* Horizonal glue.
* - stretchFactor : the stretch factor in float
*/
export interface HGlue{
+ isHorizonalGlue : true,
+ stretchFactor: number
+}
+
+export interface VGlue{
+ isHorizonalGlue : false,
stretchFactor: number
}
newLined : BoxesItem
}
+/** BR is like html br */
+export interface BR extends BreakPoint{
+ isBR : true;
+}
+
export type BoxesItem = HGlue | Box | BreakPoint | BoxesItem[] ;
/**
/**
* a basic Box
- * - x :
- * - y :
+ * - x : pt
+ * - y : pt
* - textStyle :
* - direction :
- * - width : x_advance
+ * - width : x_advance pt
* - content :
*/
export interface Box{
"height" : 1122.5};
export const defaultTextStyle : TextStyle = {
- family : "FreeSerif",
+ family : "Noto Sans CJK TC",
size : ptToPx(12),
textWeight : TextWeight.REGULAR,
fontStyle : FontStyle.ITALIC,
direction : Direction.TTB,
baseLineskip : ptToPx(15),
textStyle : defaultTextStyle,
- x : A4_IN_PX.width * 0.10 * 0.75,
- y : A4_IN_PX.height * 0.10 * 0.75,
+ 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,
*/
/**
- * convert '\n\n' to newline command ["nl"]
+ * convert '\n\n' to new paragraph command ["br"]
* @param arr the input `tkTree`
* @param clo the `Clo` object
* @returns the input tktree
for (let j = 0; j < middle.length; j++){
var item = middle[j];
if (!Array.isArray(item) && item == "\n\n"){
- result.push(["nl"]); // push a newline command to the result `tkTree`
+ result.push(["br"]); // push a newline command to the result `tkTree`
}
else{
result.push(middle[j]);
return result;
}
+
+
/**
* calculate the text width and Height with a given `TextStyle`
* @param preprocessed
*/
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]);
}
res = res.flat();
* @param preprocessed
* @param defaultFontStyle
*/
-export async function calculateTextWidthHeightAux(element : tkTree, style : TextStyle): Promise<BoxesItem> {
+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)*0.75/1000,
- height : (runGlyphsItem.bbox.maxY - runGlyphsItem.bbox.minY)*(style.size)*0.75/1000,
+ 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];
-
+ // break point of a line
}else if(element[0] == "bp"){
- var beforeNewLine = await calculateTextWidthHeightAux(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);
+ let afterNewLine = (await calculateTextWidthHeightAux(element[2], style, styleCache, fontCache))[0];
if (Array.isArray(afterNewLine)){
afterNewLine = afterNewLine.flat();
}
newLined : afterNewLine,
}
- return breakPointNode;
+
+ return [breakPointNode, styleCache, fontCache];
+ // hglue
}else if(element[0] == "hglue" && !Array.isArray(element[1])){
- let hGlue : HGlue = {stretchFactor : parseFloat(element[1])}
- return hGlue;
+ let hGlue : HGlue = {
+ isHorizonalGlue : true,
+ stretchFactor : parseFloat(element[1])}
+ return [hGlue, styleCache, fontCache];
+ }
+ // new line <br/>
+ else if(element[0] == "br"){
+ let brBoxItem = await calculateTextWidthHeightAux(["hglue", "10000"],
+ style, styleCache, fontCache);
+ // <br/>
+ let BR : BR = {
+ isBR : true,
+ original : brBoxItem[0],
+ newLined : brBoxItem[0]};
+ return [BR, styleCache, fontCache];
}
else{
- return calculateTextWidthHeight(element, style);
+ return [await calculateTextWidthHeight(element, style), styleCache, fontCache];
}
}
+/**
+ * put childrenBox inside VBox
+ */
+export function putInVBox(childrenBox: Box[], parentBox: Box) : Box{
+ var voffset = Array(childrenBox.length).fill(0);
+ for (var i=0;i<childrenBox.length-1;i++){
+ voffset[i+1] = voffset[i] + childrenBox[i].height;
+
+ }
+ console.log("~", voffset);
+ for (var i=0; i<childrenBox.length; i++){
+ childrenBox[i] = applyVOffset(childrenBox[i], voffset[i]);
+ childrenBox[i].y += voffset[i];
+ }
+ parentBox.content = childrenBox;
+ return parentBox;
+}
+
+/**
+ * apply vertical offset to a box
+ * @param box the box to be applied
+ * @param voffset the vertical offset
+ * @returns applied box
+ */
+export function applyVOffset(box : Box, voffset : number){
+ if(box.y !== null){
+ box.y += voffset;
+ }
+ if (Array.isArray(box.content)){
+ box.content = box.content.map((x)=>applyVOffset(x, voffset));
+ }
+ return box;
+}
/**
* whole document-representing class
}
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;
- let a = await calculateTextWidthHeight(preprocessed, defaultFontStyle);
+
+ // calculate the width and height of each chars
+ let calculated = await calculateTextWidthHeight(preprocessed, defaultFontStyle);
+
+ //
+ let paragraphized = this.paragraphize(calculated);
+
let breakLineAlgorithms = new breakLines.BreakLineAlgorithm();
- // TODO
- //console.log(breakLineAlgorithms.totalCost(a,70));
- let segmentedNodes = breakLineAlgorithms.segmentedNodes(a, this.attrs.defaultFrameStyle.width);
- console.log(this.attrs.defaultFrameStyle.width);
- let segmentedNodesToBox =
- this.segmentedNodesToFrameBox(segmentedNodes, <FrameBox>this.attrs.defaultFrameStyle);
+ let segmentedNodes = paragraphized.map((x)=>breakLineAlgorithms.segmentedNodes(x, this.attrs.defaultFrameStyle.width));
+ let segmentedNodesToBox = segmentedNodes.map((x)=>
+ this.segmentedNodesToFrameBoxAux(x, <FrameBox>this.attrs.defaultFrameStyle));
+ let boxWithParagraph = putInVBox(segmentedNodesToBox, this.attrs.defaultFrameStyle);
- let boxesFixed = this.fixenBoxesPosition(segmentedNodesToBox);
+ console.log(boxWithParagraph);
+
+ // fix the bug of main Frame x & y
+ if(boxWithParagraph.x !== null)
+ {boxWithParagraph.x *= 0.75}
+ if(boxWithParagraph.y !== null)
+ {boxWithParagraph.y *= 0.75}
+
+ let boxesFixed = this.fixenBoxesPosition(boxWithParagraph);
+ (<Box[]>boxesFixed.content).map((e)=>{console.log(e.y)});
- // generate pdf7
+ // generate pdf
const doc = new PDFDocument({size: 'A4'});
doc.pipe(fs.createWriteStream('output.pdf'));
this.grid(doc);
- await this.putText(doc, boxesFixed);
+ let styleCache : any = {};
+ let fontPairCache : fontPathPSNamePair = {path : "", psName : ""};
+ await this.putText(doc, boxesFixed, <TextStyle>styleCache, fontPairCache);
// putChar
doc.end();
+
}
- async putText(doc : PDFKit.PDFDocument, box : Box): Promise<PDFKit.PDFDocument>{
+ paragraphize(calculated : BoxesItem[]): BoxesItem[][]{
+ var res : BoxesItem[][] = [[]];
+ for (var i=0;i<calculated.length;i++){
+ if ("isBR" in <Box>(calculated[i])){
+ res[res.length-1] = res[res.length-1].concat(calculated[i]);
+ res.push([]);
+ }else{
+ res[res.length-1] = res[res.length-1].concat(calculated[i]);
+ }
+ }
+
+ res = res.filter((x)=>x.length !== 0);
+ return res;
+ }
+
+ async putText(doc : PDFKit.PDFDocument, box : Box, styleCache : TextStyle,
+ fontPairCache : fontPathPSNamePair):
+ Promise<[PDFKit.PDFDocument, TextStyle, fontPathPSNamePair]>{
+ var fontPair;
+
if (box.textStyle !== null){
- let fontInfo = fontStyleTofont(box.textStyle);
-
- if (fontInfo.path.match(/\.ttc$/g)){
- doc
- .font(fontInfo.path, fontInfo.psName)
- .fontSize(box.textStyle.size*0.75);}
- else{
- doc
- .font(fontInfo.path)
- .fontSize(box.textStyle.size*0.75);
- }
+
+ if(box.textStyle == styleCache){
+ fontPair = fontPairCache;
+ }else{
+ fontPair = fontStyleTofont(box.textStyle);
+ styleCache = box.textStyle;
+ fontPairCache = fontPair;
+ let textColor = box.textStyle.color;
+
+ if (fontPair.path.match(/\.ttc$/g)){
+ doc
+ .fillColor(textColor !== undefined ? textColor : "#000000")
+ .font(fontPair.path, fontPair.psName)
+ .fontSize(box.textStyle.size * 0.75);}
+ else{
+ doc
+ .fillColor(textColor !== undefined ? textColor : "#000000")
+ .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++){
- doc = await this.putText(doc, box.content[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){
- console.log(box.content, box.x, box.y);
await doc.text(box.content,
(box.x!==null? box.x: undefined),
(box.y!==null? box.y: undefined));
}
}
- return doc;
+
+
+ return [doc, styleCache, fontPairCache];
};
* @returns the fixed boxes
*/
fixenBoxesPosition(box : Box) : Box{
- console.log("~~~~~", 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)){
}
}
-
-
box.content[i] = this.fixenBoxesPosition(box.content[i]);
}
}
* @param frame the frame to be layed out.
* @returns the big `Box`.
*/
- segmentedNodesToFrameBox(segmentedNodes : BoxesItem[][], frame : FrameBox) : Box{
+ segmentedNodesToFrameBoxAux(segmentedNodes : BoxesItem[][], frame : FrameBox) : Box{
let baseLineskip = frame.baseLineskip;
let boxArrayEmpty : Box[] = [];
let bigBox : Box = {
- x : frame.x,
- y : frame.y,
+ 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,
+ height :frame.height,
content : boxArrayEmpty,
}
}
bigBox.content = bigBoxContent;
+ let bigBoxHeight = bigBoxContent.map((x)=>x.height).reduce((x,y)=>x+y, 0);
+ bigBox.height = bigBoxHeight;
return bigBox;
}
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;
- console.log("OFFSET", offset);
var res = [];
for (var i=0; i<nodeLine.length; i++){
var ele = nodeLine[i];
y : null,
textStyle : null,
direction : frame.directionInsideLine,
+ //width : 0, // ragged
width : ele.stretchFactor / sumStretchFactor * offset,
height : 0,
content : "",
projects / clo / blobdiff