X-Git-Url: https://git.kianting.info/?a=blobdiff_plain;f=src%2Flibclo%2Findex.ts;h=bcd6a46704d96b05580f4f81eea3e86eef1b214e;hb=134485a6d637ce5b422098c08bccb274c73bca86;hp=917cf68afbb1f8061105241b729ee808e85ea543;hpb=c3dc58d74afa6b298d84bad90d63c027a32a954a;p=clo
diff --git a/src/libclo/index.ts b/src/libclo/index.ts
index 917cf68..bcd6a46 100644
--- a/src/libclo/index.ts
+++ b/src/libclo/index.ts
@@ -1,7 +1,14 @@
-import { isKeyObject, isStringObject } from "util/types";
+import { isBoxedPrimitive, isKeyObject, isStringObject } from "util/types";
import {tkTree} from "../parser";
-import {FontStyle, TextStyle, TextWeight} from "../canva";
+import {FontStyle, TextStyle, TextWeight, fontStyleTofont} from "../canva";
import { JSDOM } from "jsdom";
+import * as fontkit from "fontkit";
+import * as util from "node:util";
+import * as breakLines from "./breakLines";
+import "pdfkit";
+import PDFKitPage from "pdfkit/js/page";
+import { ColorTypes, PDFDocument, rgb } from "pdf-lib";
+import * as fs from "fs";
/**
* TYPES
@@ -20,6 +27,21 @@ export enum Direction{
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
@@ -30,13 +52,21 @@ export interface FrameBox extends Box{
baseLineskip : number | null,
}
+export interface CharBox extends Box{
+ minX: number,
+ maxX: number,
+ minY: number,
+ maxY: number,
+
+}
+
/**
* a basic Box
* - x :
* - y :
* - textStyle :
* - direction :
- * - width :
+ * - width : x_advance
* - content :
*/
export interface Box{
@@ -188,7 +218,8 @@ export function spacesToBreakpoint(arr : tkTree, clo : Clo) : 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`
+ // push a breakpoint command to the result `tkTree`
+ result.push([ 'bp', [["hglue", "0.1"], item] , "" ]);
}
else{
result.push(item);
@@ -257,45 +288,92 @@ export function hyphenTkTree(arr : tkTree, lang: string) : tkTree{
* @param preprocessed
* @param defaultFontStyle
*/
-export function calculateTextWidthHeight(preprocessed : tkTree, style : TextStyle): void {
- var dom = new JSDOM(`
- `);
+export async function calculateTextWidthHeight(element : tkTree, style : TextStyle): Promise {
+ var res = [];
- try {
- let canvas = dom.window.document.getElementById("canvas");
- console.log(canvas);
-
- /*if (!(canvas instanceof HTMLElement)){
- throw new Error('the in the jsdom\'s DOM is not found.');
-
- }*/
-
- let context = (canvas).getContext("2d");
- console.log(context);
- if (context == null){
- throw new Error('`canvas.getContext("2d");` can\'t be executed.');
-
- }
+ for (var i=0; i {
+ var result : BoxesItem = [];
+
+ let fontPair = fontStyleTofont(style);
+ if (fontPair.path.match(/\.ttc$/)){
+ var font = await fontkit.openSync(fontPair.path, fontPair.psName);
+ }
+ else{
+ var font = await fontkit.openSync(fontPair.path);
+ }
+ if (!Array.isArray(element)){
+ var run = font.layout(element, undefined, undefined, undefined, "ltr");
+
+
+
+ for (var j=0;jthis.attrs["defaultFrameStyle"]));
+
+ // generate pdf
+ const pdfDoc = await PDFDocument.create();
+ var page = pdfDoc.addPage();
+ page.drawText('You can create PDFs!');
+
+ for (var j = 0; j<1000; j+=5){
+ if (j %50 == 0){
+ page.drawText(i.toString(), {x: 50, y: j});
+ }
+
+ page.drawLine({
+ start: { x: 0, y: j },
+ end: { x: 1000, y: j },
+ thickness: 0.5,
+ color: rgb(0.75, 0.2, 0.2),
+ opacity: 0.20,
+ });
+ }
+
+ for (var i = 0; i<1000; i+=5){
+ if (i % 50 == 0){
+ page.drawText(i.toString(), {x: i, y: 50});
+ }
+ page.drawLine({
+ start: { x: i, y: 0 },
+ end: { x: i, y: 1000 },
+ thickness: 0.5,
+ color: rgb(0.75, 0.2, 0.2),
+ opacity: 0.20,
+ });
+ }
+ pdfDoc.save();
+
+ const pdfBytes = await pdfDoc.save();
+ fs.writeFileSync("blank.pdf", pdfBytes);
+ }
+
+ segmentedNodesToFrameBox(segmentedNodes : BoxesItem[][], frame : FrameBox) : Box{
+ let baseLineskip = frame.baseLineskip;
+ let boxArrayEmpty : Box[] = [];
+ let bigBox : Box = {
+ x : frame.x,
+ y : frame.y,
+ 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; icurrentLineSkip ){
+ currentLineSkip = glyphMaxHeight;
+ }
+
+ var currentLineBox : Box = {
+ x : null,
+ y : null,
+ textStyle : defaultTextStyle,
+ direction : frame.directionInsideLine,
+ width : frame.width,
+ height : currentLineSkip,
+ content : 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 - glueRemovedWidth;
+ var res = [];
+ for (var i=0; i