X-Git-Url: https://git.kianting.info/?a=blobdiff_plain;f=src%2Flibclo%2Findex.ts;h=d074e9c91ce127b4d03f560ae25a6f8c4c74b9aa;hb=714bbb4a64531268d17ca8f7ae60800ec2046a27;hp=e5c2108442e2deae04678c9a11e261f70f6f5ed7;hpb=ea033498d79b3a84b16e15ff2a218ac5ef5f70b5;p=clo

diff --git a/src/libclo/index.ts b/src/libclo/index.ts
index e5c2108..d074e9c 100644
--- a/src/libclo/index.ts
+++ b/src/libclo/index.ts
@@ -1,9 +1,12 @@
 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";
 
 
 /**
@@ -22,12 +25,17 @@ export enum Direction{
     TTB,
     BTT,
 }
-
 /**
  * Horizonal glue.
  * - stretchFactor : the stretch factor in float
  */
 export interface HGlue{
+    isHorizonalGlue : true,
+    stretchFactor: number
+}
+
+export interface VGlue{
+    isHorizonalGlue : false,
     stretchFactor: number
 }
 
@@ -36,6 +44,11 @@ export interface BreakPoint{
     newLined : BoxesItem  
 }
 
+/** BR is like html br */
+export interface BR extends BreakPoint{
+    isBR : true;
+}
+
 export type BoxesItem = HGlue | Box | BreakPoint | BoxesItem[] ;
 
 /**
@@ -83,7 +96,7 @@ export const A4_IN_PX = {"width" : 793.7,
                   "height" : 1122.5};
 
 export const defaultTextStyle : TextStyle = {
-        family : "FreeSerif",
+        family : "Noto Sans CJK TC",
         size : ptToPx(12),
         textWeight : TextWeight.REGULAR,
         fontStyle : FontStyle.ITALIC,
@@ -132,7 +145,7 @@ export function ptToPx(pt : number) : number{
  */
 
 /**
- * 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
@@ -154,7 +167,7 @@ export function twoReturnsToNewline(arr : tkTree, clo : Clo): 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]);
@@ -279,6 +292,8 @@ export function hyphenTkTree(arr : tkTree, lang: string) : tkTree{
     return result;
 }
 
+
+
 /**
  * calculate the text width and Height with a given `TextStyle` 
  * @param preprocessed 
@@ -286,9 +301,14 @@ export function hyphenTkTree(arr : tkTree, lang: string) : tkTree{
  */
 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();
@@ -302,18 +322,37 @@ export async function calculateTextWidthHeight(element : tkTree, style : TextSty
  * @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");
 
@@ -340,19 +379,20 @@ export async function calculateTextWidthHeightAux(element : tkTree, style : Text
             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();
         }
@@ -362,18 +402,66 @@ export async function calculateTextWidthHeightAux(element : tkTree, style : Text
             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
@@ -428,56 +516,104 @@ export class Clo{
     }
 
     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);
 
-        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$/g)){
-                doc
-                .font(fontInfo.path, fontInfo.psName)
-                .fontSize(box.textStyle.size * 0.75);}
-            else{
-                doc
-                .font(fontInfo.path)
-                .fontSize(box.textStyle.size * 0.75); // 0.75 must added!  
-            }
+            
+            if(box.textStyle == styleCache){
+                fontPair = fontPairCache;
+            }else{
+                fontPair = fontStyleTofont(box.textStyle);
+                styleCache = box.textStyle;
+                fontPairCache = fontPair;
+                let textColor = box.textStyle.color;
+
+                if (fontPair.path.match(/\.ttc$/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);
@@ -486,7 +622,10 @@ export class Clo{
             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){
                 await doc.text(box.content,
@@ -495,7 +634,9 @@ export class Clo{
             }
         
         }
-        return doc;
+
+
+        return [doc, styleCache, fontPairCache];
     };
 
 
@@ -580,8 +721,6 @@ export class Clo{
                     }
 
                 }
-
-
                 box.content[i] = this.fixenBoxesPosition(box.content[i]);
             }
         }
@@ -595,7 +734,7 @@ export class Clo{
      * @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 = {
@@ -636,6 +775,8 @@ export class Clo{
         }
 
         bigBox.content = bigBoxContent;
+        let bigBoxHeight = bigBoxContent.map((x)=>x.height).reduce((x,y)=>x+y, 0);
+        bigBox.height = bigBoxHeight;
 
         return bigBox;
     }