mirror of
https://github.com/curioustorvald/tsvm.git
synced 2026-03-07 19:51:51 +09:00
272 lines
11 KiB
JavaScript
272 lines
11 KiB
JavaScript
const COL_TEXT = 239
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const COL_BACK = 255
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const COL_SUPERTEXT = 239
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const COL_DIMTEXT = 249
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const COL_LNUMBACK = 18
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const COL_LNUMFORE = 253
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const COL_CARET_ROW = 81
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const BIG_STRIDE = 999
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const TAB_SIZE = 4
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const PAINT_START_Y = 3
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const MEM = system.maxmem()
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const NO_LINEHEAD_PUNCT = [33,34,39,41,44,46,58,59,62,63,93,125]
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const NO_LINELAST_PUNCT = [34,39,40,60,91,123]
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const TYPESET_DEBUG_PRINT = true
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// bits:
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// 0: set to justify; unset to ragged
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// 1: set to hyphenate
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const TYPESET_STRATEGY_RAGGEDRIGHT = 1024 + 0b00000000 // not implemented yet!
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const TYPESET_STRATEGY_LESSRAGGED = 1024 + 0b00000010
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const TYPESET_STRATEGY_JUSTIFIED = 1024 + 0b00000011 // not implemented yet!
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let PAGE_HEIGHT = 60
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let PAGE_WIDTH = 80
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// 80x60 -> 720x1080 text area; with 72px margin for each side, paper resolution is 864x1224, which is quite close to 1:sqrt(2) ratio
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let scroll = 0
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let scrollHor = 0
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let paragraphs = [
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'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry\'s standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.',
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'Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.',
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'The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham.'
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]
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/*let paragraphs = [
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'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry\'s standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting,remaining essentially unchanged.It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.',
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'Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance.The first line of Lorem Ipsum,"Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.',
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'The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham.'
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]*/
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let typeset = {lineIndices: [], lineValidated: [], strategy: TYPESET_STRATEGY_LESSRAGGED} // index 0 == 2nd line
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let cursorRow = 0
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let cursorCol = 0
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let page = 0
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let exit = false
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let bulletinShown = false
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let cursoringCol = 0
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let filename = "NEWFILE"
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let modified = false
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let editorMode = 1 // 0: Visual Mode, 1: Edit Mode, 2: Command Mode; just like the good ol' Vi
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const editorModeLabel = ["VISUAL MODE (hit I to EDIT, hit : to enter a COMMAND)", "EDIT MODE (hit ESC for Visual Mode)", ":"]
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let cmdbuf = ""
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let windowWidth = 0
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let windowHeight = 0
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let paintWidth = 0
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let paintHeight = 0
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let scrollPeek = 0
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let PAINT_START_X = 0
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let caretLeft = 0
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let caretRight = 0
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const scrollHorPeek = 1; // to accommodate the scroll indicator
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function drawInit() {
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// wipe screen
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for (let i = 0; i < 80*32; i++) {
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sys.poke(-1302529 - i, COL_TEXT)
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sys.poke(-1305089 - i, COL_BACK)
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sys.poke(-1307649 - i, 0)
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}
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// set variables
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windowWidth = con.getmaxyx()[1]
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windowHeight = con.getmaxyx()[0]
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caretLeft = (windowWidth - PAGE_WIDTH) >> 1
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caretRight = caretLeft + PAGE_WIDTH
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PAINT_START_X = caretLeft + 1
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paintWidth = caretRight - caretLeft
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paintHeight = windowHeight - PAINT_START_Y
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scrollPeek = Math.ceil((paintHeight / 7))
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}
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function ctrlToSym(c) {
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if (c == 10) return 254
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if (c == 32) return 250
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return c
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}
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function drawMenubar() {
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let icon = (modified) ? '*' : '-'
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let fnamestr = `${icon} ${filename} ${icon}`
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con.move(1,(windowWidth - fnamestr.length) / 2)
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print(fnamestr)
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}
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function drawPRC() {
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con.move(1,2)
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print(`PG:${page+1} LN:${cursorRow+1} COL:${cursorCol+1} `)
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let rb = MEM - paragraphs.map(it => it.length).reduce((acc,i) => acc + i)
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let rp = (rb/100)|0
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let s = ` REMAIN:${(rp/10)|0}.${rp%10}K`
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con.move(1,windowWidth - s.length)
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print(s)
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}
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function typesetLessRagged(lineStart, lineEnd) {
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let printbuf = []
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let lineIndices = []
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for (let i = lineStart; i < lineEnd; i++) { printbuf.push('') }
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let vr = 0; let vc = 0 // virtual row/column
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let text = (typeset.lineIndices[lineStart] !== undefined)
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? paragraphs.join('\n').slice(typeset.lineIndices[lineStart], typeset.lineIndices[lineEnd] || 9999999)
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: paragraphs.join('\n')
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let ln = function(i) {
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vr += 1;vc = 0
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lineIndices.push(i)
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}
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for (let i = 0; i < text.length; i++) {
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let cM2 = text.charCodeAt(i-2)
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let cM1 = text.charCodeAt(i-1)
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let c = text.charCodeAt(i)
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let c1 = text.charCodeAt(i+1)
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let c2 = text.charCodeAt(i+2)
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//serial.println(`i:${i} char:'${String.fromCharCode(cM2,cM1,32,c,32,c1,c2)}' Ln ${vr} Col ${vc}`)
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if (c == 10) {
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printbuf[vr] += String.fromCharCode(254)
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ln(i+1)
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printbuf[vr] = ''
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}
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else if (vc == paintWidth - 1 && NO_LINEHEAD_PUNCT.includes(c1)) {
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printbuf[vr] += String.fromCharCode(c, c1)
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ln(i)
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i += (32 == c2) ? 2 : 1
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lineIndices[lineIndices.length - 1] = i+1
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}
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else if (vc == paintWidth - 1 && NO_LINELAST_PUNCT.includes(c)) {
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ln(i)
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printbuf[vr] += String.fromCharCode(c)
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}
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else if (vc == paintWidth - 1) {
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if (32 == c || 32 == c1 || 10 == c1) {
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printbuf[vr] += String.fromCharCode(ctrlToSym(c))
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if (32 == c1 || 10 == c1) printbuf[vr] += String.fromCharCode(ctrlToSym(c1))
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ln(i+1)
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if (32 == c1 || 10 == c1) {
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i += 1
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lineIndices[lineIndices.length - 1] += 1
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}
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}
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// if the head-char of the word happens to sit on the rightmost side and the char right before is ' '
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else if (32 == cM2) {
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printbuf[vr] = printbuf[vr].substring(0, printbuf[vr].length - 1)
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ln(i-1); vc = 1
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printbuf[vr] += String.fromCharCode(cM1, c)
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}
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else {
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printbuf[vr] += (45 == cM1 || 32 == cM1) ? ' ' : '-'
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ln(i)
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printbuf[vr] += String.fromCharCode(c)
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vc += 1
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}
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}
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else if (c >= 32 && c <= 175 || c >= 224 && c <= 253) {
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printbuf[vr] += String.fromCharCode(ctrlToSym(c))
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vc += 1
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}
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if (vr > paintHeight || c === undefined) break;
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}
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return [printbuf, lineIndices]
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}
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function typesetAndPrint(from, toExclusive) {
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let lineStart = from || scroll
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let lineEnd = toExclusive || lineStart + paintHeight
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let lineValidated = []
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let [printbuf, lineIndices] = typesetLessRagged(lineStart, lineEnd)
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for (let y = 0; y < paintHeight; y++) {
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//con.move(3+y, 1+caretLeft)
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//print(printbuf[y] || '')
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let str = printbuf[y] || ''
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for (let x = 0; x < paintWidth; x++) {
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sys.poke(
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-1307649 - ((y+2) * windowWidth + caretLeft) - x,
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str.charCodeAt(x) || 0
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)
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}
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}
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if (TYPESET_DEBUG_PRINT) {
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for (let y = 0; y < paintHeight; y++) {
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con.move(3+y, 1)
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print(' ')
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con.move(3+y, 1)
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print((lineIndices[y-1+lineStart]+1)|0 || '-')
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}
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}
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// update typeset info
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typeset.lineIndices = []
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.concat(typeset.lineIndices.slice(0, lineStart))
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.concat(lineIndices)
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.concat(typeset.lineIndices.slice(lineEnd))
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typeset.lineValidated = []
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.concat(typeset.lineValidated.slice(0, lineStart))
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.concat(lineIndices.map(it => true))
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.concat(typeset.lineValidated.slice(lineEnd))
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gotoText()
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}
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function gotoText() {
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con.move(PAINT_START_Y + cursorRow - scroll, PAINT_START_X + cursorCol - scrollHor)
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con.curs_set(1)
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}
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function drawColumnInd() {
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for (let k = 0; k < windowWidth; k++) {
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let off = k - caretLeft + 1
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let char = 0xBC
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if (off % 10 == 0) char = 0xB0 + (off/10|0)
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if (off == 1) char = 0xB0
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if (k == caretRight - 1) char = 0xBA
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if (off % 10 == 5) char = 0xBB
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if (off <= 0 || off > paintWidth) char = 0xBC
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if (off - 1 == cursorCol) char += 16
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con.mvaddch(2, PAINT_START_X + off - 1, char)
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}
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}
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function drawCmdbuf() {
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con.move(windowHeight, 2)
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for (let i = 2; i <= windowWidth - 1; i++) {
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print(' ')
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}
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con.move(windowHeight, 2)
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print(editorModeLabel[editorMode])
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if (2 == editorMode) print(cmdbuf)
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}
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function drawMain() {
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con.curs_set(0)
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drawInit()
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con.color_pair(COL_TEXT, COL_BACK)
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drawMenubar()
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drawPRC()
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drawColumnInd()
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drawCmdbuf()
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}
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drawMain()
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typesetAndPrint()
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typesetAndPrint(5) |