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302 lines
8.8 KiB
302 lines
8.8 KiB
const { mk } = require('../utils')
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module.exports = function attachDebugScreen (screen) {
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const debugCanvas = mk('canvas')
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const ctx = debugCanvas.getContext('2d')
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debugCanvas.classList.add('debug-canvas')
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let mouseHoverCell = null
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let updateToolbar
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let onMouseMove = e => {
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mouseHoverCell = screen.screenToGrid(e.offsetX, e.offsetY)
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startDrawing()
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updateToolbar()
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}
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let onMouseOut = () => (mouseHoverCell = null)
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let addCanvas = function () {
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if (!debugCanvas.parentNode) {
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screen.canvas.parentNode.appendChild(debugCanvas)
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screen.canvas.parentNode.addEventListener('mousemove', onMouseMove)
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screen.canvas.parentNode.addEventListener('mouseout', onMouseOut)
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}
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}
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let removeCanvas = function () {
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if (debugCanvas.parentNode) {
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debugCanvas.parentNode.removeChild(debugCanvas)
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screen.canvas.parentNode.removeEventListener('mousemove', onMouseMove)
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screen.canvas.parentNode.removeEventListener('mouseout', onMouseOut)
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onMouseOut()
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}
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}
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let updateCanvasSize = function () {
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let { width, height, devicePixelRatio } = screen.window
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let cellSize = screen.getCellSize()
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debugCanvas.width = width * cellSize.width * devicePixelRatio
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debugCanvas.height = height * cellSize.height * devicePixelRatio
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debugCanvas.style.width = `${width * cellSize.width}px`
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debugCanvas.style.height = `${height * cellSize.height}px`
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}
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let drawInfo = mk('div')
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drawInfo.classList.add('draw-info')
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let startTime, endTime, lastReason
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let cells = new Map()
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let clippedRects = []
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let updateFrames = []
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let startDrawing
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screen._debug = {
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drawStart (reason) {
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lastReason = reason
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startTime = Date.now()
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clippedRects = []
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},
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drawEnd () {
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endTime = Date.now()
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console.log(drawInfo.textContent = `Draw: ${lastReason} (${(endTime - startTime)} ms) with graphics=${screen.window.graphics}`)
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startDrawing()
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},
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setCell (cell, flags) {
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cells.set(cell, [flags, Date.now()])
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},
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clipRect (...args) {
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clippedRects.push(args)
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},
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pushFrame (frame) {
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frame.push(Date.now())
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updateFrames.push(frame)
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startDrawing()
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}
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}
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let clipPattern
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{
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let patternCanvas = document.createElement('canvas')
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patternCanvas.width = patternCanvas.height = 12
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let pctx = patternCanvas.getContext('2d')
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pctx.lineWidth = 1
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pctx.strokeStyle = '#00f'
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pctx.beginPath()
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pctx.moveTo(0, 0)
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pctx.lineTo(0 - 4, 12)
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pctx.moveTo(4, 0)
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pctx.lineTo(4 - 4, 12)
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pctx.moveTo(8, 0)
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pctx.lineTo(8 - 4, 12)
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pctx.moveTo(12, 0)
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pctx.lineTo(12 - 4, 12)
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pctx.moveTo(16, 0)
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pctx.lineTo(16 - 4, 12)
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pctx.stroke()
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clipPattern = ctx.createPattern(patternCanvas, 'repeat')
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}
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let isDrawing = false
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let lastDrawTime = 0
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let t = 0
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let drawLoop = function () {
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if (isDrawing) window.requestAnimationFrame(drawLoop)
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let dt = (Date.now() - lastDrawTime) / 1000
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lastDrawTime = Date.now()
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t += dt
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let { devicePixelRatio, width, height } = screen.window
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let { width: cellWidth, height: cellHeight } = screen.getCellSize()
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let screenLength = width * height
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let now = Date.now()
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ctx.setTransform(devicePixelRatio, 0, 0, devicePixelRatio, 0, 0)
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ctx.clearRect(0, 0, width * cellWidth, height * cellHeight)
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let activeCells = 0
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for (let cell = 0; cell < screenLength; cell++) {
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if (!cells.has(cell) || cells.get(cell)[0] === 0) continue
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let [flags, timestamp] = cells.get(cell)
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let elapsedTime = (now - timestamp) / 1000
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if (elapsedTime > 1) continue
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activeCells++
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ctx.globalAlpha = 0.5 * Math.max(0, 1 - elapsedTime)
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let x = cell % width
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let y = Math.floor(cell / width)
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if (flags & 1) {
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// redrawn
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ctx.fillStyle = '#f0f'
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}
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if (flags & 2) {
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// updated
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ctx.fillStyle = '#0f0'
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}
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ctx.fillRect(x * cellWidth, y * cellHeight, cellWidth, cellHeight)
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if (flags & 4) {
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// wide cell
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ctx.lineWidth = 2
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ctx.strokeStyle = '#f00'
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ctx.strokeRect(x * cellWidth, y * cellHeight, cellWidth, cellHeight)
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}
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}
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if (clippedRects.length) {
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ctx.globalAlpha = 0.5
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ctx.beginPath()
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for (let rect of clippedRects) {
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ctx.rect(...rect)
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}
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ctx.fillStyle = clipPattern
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ctx.fill()
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}
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let didDrawUpdateFrames = false
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if (updateFrames.length) {
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let framesToDelete = []
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for (let frame of updateFrames) {
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let time = frame[4]
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let elapsed = Date.now() - time
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if (elapsed > 1000) framesToDelete.push(frame)
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else {
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didDrawUpdateFrames = true
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ctx.globalAlpha = 1 - elapsed / 1000
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ctx.strokeStyle = '#ff0'
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ctx.lineWidth = 2
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ctx.strokeRect(frame[0] * cellWidth, frame[1] * cellHeight, frame[2] * cellWidth, frame[3] * cellHeight)
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}
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}
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for (let frame of framesToDelete) {
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updateFrames.splice(updateFrames.indexOf(frame), 1)
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}
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}
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if (mouseHoverCell) {
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ctx.save()
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ctx.globalAlpha = 1
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ctx.lineWidth = 1 + 0.5 * Math.sin(t * 10)
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ctx.strokeStyle = '#fff'
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ctx.lineJoin = 'round'
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ctx.setLineDash([2, 2])
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ctx.lineDashOffset = t * 10
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ctx.strokeRect(mouseHoverCell[0] * cellWidth, mouseHoverCell[1] * cellHeight, cellWidth, cellHeight)
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ctx.lineDashOffset += 2
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ctx.strokeStyle = '#000'
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ctx.strokeRect(mouseHoverCell[0] * cellWidth, mouseHoverCell[1] * cellHeight, cellWidth, cellHeight)
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ctx.restore()
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}
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if (activeCells === 0 && !mouseHoverCell && !didDrawUpdateFrames) {
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isDrawing = false
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removeCanvas()
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}
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}
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startDrawing = function () {
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if (isDrawing) return
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addCanvas()
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updateCanvasSize()
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isDrawing = true
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lastDrawTime = Date.now()
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drawLoop()
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}
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// debug toolbar
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const toolbar = mk('div')
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toolbar.classList.add('debug-toolbar')
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let toolbarAttached = false
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const dataDisplay = mk('div')
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dataDisplay.classList.add('data-display')
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toolbar.appendChild(dataDisplay)
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toolbar.appendChild(drawInfo)
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const buttons = mk('div')
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buttons.classList.add('toolbar-buttons')
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toolbar.appendChild(buttons)
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{
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const redraw = mk('button')
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redraw.textContent = 'Redraw'
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redraw.addEventListener('click', e => {
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screen.renderer.resetDrawn()
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screen.renderer.draw('debug-redraw')
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})
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buttons.appendChild(redraw)
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const fancyGraphics = mk('button')
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fancyGraphics.textContent = 'Toggle Graphics'
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fancyGraphics.addEventListener('click', e => {
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screen.window.graphics = +!screen.window.graphics
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})
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buttons.appendChild(fancyGraphics)
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}
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const attachToolbar = function () {
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screen.canvas.parentNode.appendChild(toolbar)
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}
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const detachToolbar = function () {
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toolbar.parentNode.removeChild(toolbar)
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}
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screen.on('update-window:debug', debug => {
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if (debug !== toolbarAttached) {
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toolbarAttached = debug
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if (debug) attachToolbar()
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else {
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detachToolbar()
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removeCanvas()
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}
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}
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})
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const formatColor = color => color < 256 ? color : `#${`000000${(color - 256).toString(16)}`.substr(-6)}`
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const getCellData = cell => {
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if (cell < 0 || cell > screen.screen.length) return '(-)'
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let cellAttrs = screen.renderer.drawnScreenAttrs[cell]
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let cellFG = formatColor(screen.renderer.drawnScreenFG[cell])
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let cellBG = formatColor(screen.renderer.drawnScreenBG[cell])
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let cellCode = (screen.renderer.drawnScreen[cell] || '').codePointAt(0)
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let hexcode = cellCode.toString(16).toUpperCase()
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if (hexcode.length < 4) hexcode = `0000${hexcode}`.substr(-4)
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hexcode = `U+${hexcode}`
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let x = cell % screen.window.width
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let y = Math.floor(cell / screen.window.width)
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return `((${y},${x})=${cell}:${hexcode}:F${cellFG}:B${cellBG}:A${cellAttrs.toString(2)})`
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}
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let internalInfo = {}
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updateToolbar = () => {
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if (!toolbarAttached) return
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let text = `C((${screen.cursor.y},${screen.cursor.x}),hang:${screen.cursor.hanging},vis:${screen.cursor.visible})`
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if (mouseHoverCell) {
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text += ' m' + getCellData(mouseHoverCell[1] * screen.window.width + mouseHoverCell[0])
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}
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if ('flags' in internalInfo) {
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// we got ourselves some internal data
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text += ' '
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text += ` flags:${internalInfo.flags}`
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text += ` curAttrs:${internalInfo.cursorAttrs}`
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text += ` Region:${internalInfo.regionStart}->${internalInfo.regionEnd}`
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text += ` Charset:${internalInfo.charsetGx} (0:${internalInfo.charsetG0},1:${internalInfo.charsetG1})`
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text += ` Heap:${internalInfo.freeHeap}`
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text += ` Clients:${internalInfo.clientCount}`
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}
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dataDisplay.textContent = text
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}
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screen.on('draw', updateToolbar)
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screen.on('internal', data => {
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internalInfo = data
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updateToolbar()
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})
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}
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