import { isKeyObject, isStringObject } from "util/types";
import {tkTree} from "../parser";
-import {TextStyle, FontStyle, TextWeight} from "../canva";
-import { isString } from "util";
+import {FontStyle, TextStyle, TextWeight} from "../canva";
+import { JSDOM } from "jsdom";
/**
* TYPES
* TTB - top to bottom
* etc.
*/
-enum Direction{
+export enum Direction{
LTR,
RTL,
TTB,
* - directionInsideLine : text direction inside a line
* - baselineskip : the distance between baselines in px
*/
-interface FrameBox extends Box{
+export interface FrameBox extends Box{
directionInsideLine : Direction,
baseLineskip : number | null,
}
/**
* a basic Box
+ * - x :
+ * - y :
+ * - textStyle :
+ * - direction :
+ * - width :
+ * - content :
*/
-interface Box{
+export interface Box{
x : number | null,
y : number | null,
- fontStyle : FontStyle | null,
+ textStyle : TextStyle | null,
direction : Direction,
width : number,
height : number,
/**
* DEFAULT CONST PART
*/
-const A4_IN_PX = {"width" : 793.7,
+export const A4_IN_PX = {"width" : 793.7,
"height" : 1122.5};
-const defaultTextStyle : FontStyle = {
- family : "FreeSans",
- size : 12,
+export const defaultTextStyle : TextStyle = {
+ family : "FreeSerif",
+ size : ptToPx(12),
textWeight : TextWeight.REGULAR,
- textStyle : TextStyle.ITALIC,
+ fontStyle : FontStyle.ITALIC,
}
-const defaultFrameStyle : FrameBox = {
+export const defaultFrameStyle : FrameBox = {
directionInsideLine : Direction.LTR,
direction : Direction.TTB,
baseLineskip : ptToPx(15),
- fontStyle : defaultTextStyle,
+ textStyle : defaultTextStyle,
x : A4_IN_PX.width * 0.10,
y : A4_IN_PX.height * 0.10,
width : A4_IN_PX.width * 0.80,
content : null,
};
-const cjkvBlocksInRegex = ["Hani"];
+/**
+ * definition for cjk scripts
+ * - Hani : Han Character
+ * - Hang : Hangul
+ * - Bopo : Bopomofo
+ * - Kana : Katakana
+ * - Hira : Hiragana
+*/
+export const cjkvBlocksInRegex = ["Hani", "Hang", "Bopo", "Kana", "Hira"];
-const cjkvRegexPattern = new RegExp("((?:" +
+export const cjkvRegexPattern = new RegExp("((?:" +
cjkvBlocksInRegex.map((x)=>"\\p{Script_Extensions="+x+"}").join("|") + ")+)", "gu");
/**
* FUNCTION PART
* @param pt pt size value
* @returns the corresponding px value
*/
-function ptToPx(pt : number) : number{
- return pt * 4 / 3.0;
+export function ptToPx(pt : number) : number{
+ return pt * 4.0 / 3.0;
}
* REGISTER PART
*/
+/**
+ * convert '\n\n' to newline command ["nl"]
+ * @param arr the input `tkTree`
+ * @param clo the `Clo` object
+ * @returns the input tktree
+ */
+export function twoReturnsToNewline(arr : tkTree, clo : Clo): tkTree{
+ var middle : tkTree = [];
+
+ for (let i = 0; i < arr.length; i++) {
+ var item = arr[i];
+ if (!Array.isArray(item)){
+ middle = middle.concat(item.split(/(\n\n)/g));
+ }
+ else{
+ middle.push(item);
+ }
+ }
+
+ var result : 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`
+ }
+ else{
+ result.push(middle[j]);
+ }
+ }
+
+ return result;
+}
/**
* split CJKV and non-CJKV
*
* @param arr : input tkTree
- * @returns
+ * @returns a splitted tkTree (by CJK and NonCJK)
+ * - Examples:
+ * ```
+ * [`many臺中daylight`] => [`many`, `臺中`, `dahylight`]
+ * ```
*/
-function splitCJKV(arr : tkTree): tkTree{
+export function splitCJKV(arr : tkTree, clo : Clo): tkTree{
var result : tkTree = [];
for (let i = 0; i < arr.length; i++) {
var item = arr[i];
if (!Array.isArray(item)){
- console.log(item.split(cjkvRegexPattern));
result = result.concat(item.split(cjkvRegexPattern));
}
else{
return result;
}
+/**
+ * hyphenation for a clo document
+ * @param arr the array for a `tkTree`
+ * @param clo the Clo object
+ */
+export function hyphenForClo(arr : tkTree, clo : Clo): tkTree{
+ let hyphenLanguage : string = clo.attrs["hyphenLanguage"];
+ let res = hyphenTkTree(arr, hyphenLanguage);
+ return res;
+
+}
+
+/**
+ * convert spaces to Breakpoint
+ * \s+ => ["bp" [\s+] ""]
+ * @param arr the tkTree input text stream
+ * @param clo the Clo object
+ * @returns the converted object
+ */
+export function spacesToBreakpoint(arr : tkTree, clo : Clo) : tkTree{
+ let spacePattern = /^([ \t]+)$/g;
+ var result : tkTree = [];
+ 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`
+ }
+ else{
+ result.push(item);
+ }
+ }
+
+ return result;
+}
+
+/**
+ * remove all the `` (empty string) in the arr
+ * @param arr the tkTree to be filtered
+ * @param clo the Clo file
+ */
+export function filterEmptyString(arr : tkTree, clo : Clo) : tkTree{
+ if (Array.isArray(arr)){
+ arr.filter((x)=>{return x != ``;});
+ }
+
+ return arr;
+}
+
+
+/**
+ * OTHER FUNCTIONS
+ */
+
+/**
+ * hyphenate for a tkTree
+ * - hyphenation => ["bp", "", "-"]
+ * @param arr the tkTree array
+ * @param lang ISO 639 code for the language
+ */
+export function hyphenTkTree(arr : tkTree, lang: string) : tkTree{
+ // import corresponding hyphen language data and function
+ let hyphen = require("hyphen/"+lang);
+
+ let result :tkTree[] = [];
+ for (let i = 0; i < arr.length; i++) {
+ let element = arr[i];
+ let splitter = "分"; // a CJKV
+ if (!Array.isArray(element)){
+ let hyphenatedElement : string = hyphen.hyphenateSync(element, {hyphenChar :splitter});
+ let hyphenatedSplitted : tkTree = hyphenatedElement.split(splitter);
+ var newSplitted : tkTree = [];
+ for (var j=0; j<hyphenatedSplitted.length-1;j++){
+ newSplitted.push(hyphenatedSplitted[j]);
+ // "bp" for breakpoint
+ newSplitted.push(["bp", "", "-"]); //insert a breakable point (bp) mark
+ }
+ newSplitted.push(hyphenatedSplitted[hyphenatedSplitted.length-1]);
+
+ result = result.concat(newSplitted);
+
+ }else{
+ result.push(element);
+ }
+
+ }
+
+ return result;
+}
+
+/**
+ * calculate the text width and Height with a given `TextStyle`
+ * @param preprocessed
+ * @param defaultFontStyle
+ */
+export function calculateTextWidthHeight(preprocessed : tkTree, style : TextStyle): void {
+ var dom = new JSDOM(`<!DOCTYPE html><html><head></head>
+ <body><canvas id="canvas"></canvas></body></html>`);
+
+ try {
+ let canvas = dom.window.document.getElementById("canvas");
+ console.log(canvas);
+
+ /*if (!(canvas instanceof HTMLElement)){
+ throw new Error('the <canvas="canvas"> in the jsdom\'s DOM is not found.');
+
+ }*/
+
+ let context = (<HTMLCanvasElement>canvas).getContext("2d");
+ console.log(context);
+ if (context == null){
+ throw new Error('`canvas.getContext("2d");` can\'t be executed.');
+
+ }
+
+ context.font = `normal normal ${style.size}px ${style.family}`;
+ console.log(context.font);
+ let txt = `Hello john`;
+ console.log(txt);
+ let measured = context.measureText(txt);
+ let width = measured.width;
+ let height = measured.actualBoundingBoxAscent;
+ let depth = measured.actualBoundingBoxDescent;
+
+ console.log("width: "+width);
+ console.log("height: "+height);
+ console.log("depth: "+depth);
+
+
+ } catch (error) {
+ console.log("Exception "+error);
+ }
+
+
+}
+
+
+
+
+/**
+ * whole document-representing class
+ */
export class Clo{
+ /** storing the text string into the main frame */
mainStream : Array<string>;
+ /** array of preprocessor functions to preprocess the `mainStream` */
preprocessors : Array<Function>;
- attributes: {[index: string]:any} ; // a4 size(x,y)
+ /** the attributes for the Clo */
+ attrs: {[index: string]:any} ; // a4 size(x,y)
constructor(){
this.preprocessors = [];
this.mainStream = [];
- this.attributes = {"page" : A4_IN_PX};
+ this.attrs = {
+ "page" : A4_IN_PX, // default for a4. in px of [x, y]
+ "defaultFrameStyle" : defaultFrameStyle, // defaultFrameStyle
+ "hyphenLanguage" : 'en' // hyphenated in the language (in ISO 639)
+ };
// register the precessor functions
this.preprocessorRegister(splitCJKV);
+ this.preprocessorRegister(hyphenForClo);
+ this.preprocessorRegister(twoReturnsToNewline);
+ this.preprocessorRegister(spacesToBreakpoint);
+ this.preprocessorRegister(filterEmptyString);
}
public setAttr(attr : string, val : any):void{
- Object.assign(this.attributes, attr, val);
+ Object.assign(this.attrs, attr, val);
}
public getAttr(attr:string) : any{
- if (Object.keys(this.attributes).length === 0){
- return this.attributes[attr];
+ if (Object.keys(this.attrs).length === 0){
+ return this.attrs[attr];
}else{
return undefined;
}
public generatePdf(){
// preprocessed
- var prepro = this.mainStream;
+ var preprocessed = this.mainStream;
for (var i = 0; i<this.preprocessors.length; i++){
- prepro = this.preprocessors[i](prepro);
+ preprocessed = this.preprocessors[i](preprocessed, this);
}
+ // generate the width and height of the stream
+
+ let defaultFontStyle : TextStyle = this.attrs["defaultFrameStyle"].textStyle;
+ calculateTextWidthHeight(preprocessed, defaultFontStyle);
+
// TODO
- console.log("test"+prepro);
+ console.log(preprocessed);
}
}
+/*
export let a = new Clo();
-export default a;
\ No newline at end of file
+export default a; */
\ No newline at end of file
projects / clo / blobdiff