total rewrite
This commit is contained in:
Mark Hahn
parent
d0db9301b1
commit
ab4855173b
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@ -1,4 +1,8 @@
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### 2.0.0 - 11/20/15
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Rewritten from scratch.
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### 0.4.0 - 6/4/15
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* supports lit CS, thanks @michaelforrest
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25
README.md
25
README.md
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@ -1,25 +1,26 @@
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# markdown-scroll-sync Atom editor package
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Auto-scroll markdown-preview tab to match markdown source. See the project at [github](https://github.com/mark-hahn/markdown-scroll-sync).
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Auto-scroll markdown-preview tab to match markdown source.
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---
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---
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### Usage:
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### Note about version 2.x.x
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There is no atom command or keybinding. There are no config settings.
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This is a total rewrite of the package. This version is more accurate and smoother. And last, but not least, fewer bugs (grin).
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The package starts on load and watches for when it should sync. It will automatically sync when there are two panes where one active tab is a markdown file and another active tab is the markdown preview for that file. At that point it will scroll the preview to match the markdown file's scroll position.
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### Installation
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When the markdown file is scrolled the preview is automatically scrolled to match. If the preview is scrolled then syncing is temporarily turned off until the main file is focused again. The markdown file is never automatically scrolled to match the preview.
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Hello world.
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Run `apm install markdown-scroll-sync` or use the settings page to find the package and install it.
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### Usage
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There is no atom command or keybinding. There are no config settings. Just open a markdown file, open the preview, and watch it work.
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### License
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Copyright Mark Hahn by MIT license.
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### Advertisement.
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See other packages by mark-hahn at https://atom.io/users/mark-hahn/packages?direction=desc&sort=downloads.
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168
lib/main.coffee
168
lib/main.coffee
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@ -2,132 +2,74 @@
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lib/main.coffee
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###
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$ = null
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log = (args...) ->
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console.log.apply console, ['markdown-scroll, main:'].concat args
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SubAtom = require 'sub-atom'
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class MarkdownScrlSync
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activate: (state) ->
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process.nextTick =>
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# console.log 'markdown-scroll-sync: activate '
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pathUtil = require 'path'
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@roaster = require 'roaster'
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{TextEditor} = require 'atom'
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{$} = require 'space-pen'
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SubAtom = require 'sub-atom'
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@subs = new SubAtom
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pathUtil = require 'path'
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{TextEditor} = require 'atom'
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@subs = new SubAtom
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if not (prvwPkg = atom.packages.getLoadedPackage 'markdown-preview')
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if not (prvwPkg = atom.packages.getLoadedPackage 'markdown-preview-plus')
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console.log 'markdown-scroll-sync: markdown preview packages not found'
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return
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if not (prvwPkg = atom.packages.getLoadedPackage 'markdown-preview') and
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not (prvwPkg = atom.packages.getLoadedPackage 'markdown-preview-plus')
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log 'markdown preview package not found'
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return
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viewPath = pathUtil.join prvwPkg.path, 'lib/markdown-preview-view'
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MarkdownPreviewView = require viewPath
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@subs.add atom.workspace.observeActivePaneItem (editor) =>
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isMarkdown = (editor)->
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for name in ["GitHub Markdown", "CoffeeScript (Literate)"]
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return true if editor.getGrammar().name is name
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return false
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if editor instanceof TextEditor and
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editor.alive and
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isMarkdown(editor)
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@stopTracking()
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for preview in atom.workspace.getPaneItems()
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if preview instanceof MarkdownPreviewView and
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preview.editor is editor
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@startTracking editor, preview
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break
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null
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startTracking: (editor, preview) ->
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editorView = atom.views.getView editor
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if not (shadow = editorView.shadowRoot) then return
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$lines = $ shadow.querySelector '.lines'
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viewPath = pathUtil.join prvwPkg.path, 'lib/markdown-preview-view'
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MarkdownPreviewView = require viewPath
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lastTopRow = lastBotRow = null
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@scrollInterval = setInterval =>
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if not editor.alive
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@subs.add atom.workspace.observeActivePaneItem (editor) =>
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isMarkdown = (editor)->
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for name in ["GitHub Markdown", "CoffeeScript (Literate)"]
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return true if editor.getGrammar().name is name
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return false
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if editor instanceof TextEditor and
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editor.alive and
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isMarkdown(editor)
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@stopTracking()
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return
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topRow = Math.min()
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botRow = Math.max()
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$lines.find('.line[data-screen-row]').each (idx, ele) =>
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row = $(ele).attr 'data-screen-row'
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topRow = Math.min topRow, row
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botRow = Math.max botRow, row
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endPos = editor.screenPositionForBufferPosition(editor.getBuffer().getEndPosition()).row
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if botRow isnt lastBotRow and
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botRow >= endPos - 1
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preview.scrollToBottom()
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# console.log 'bottom', botRow, endPos
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else if topRow isnt lastTopRow
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# console.log 'topRow', topRow
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try
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bufPos = editor.bufferPositionForScreenPosition [topRow+1, 0]
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catch e
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console.log 'markdown-scroll-sync: error in bufferPositionForScreenPosition',
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{editor, topRow, e}
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return
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mdBeforeTopLine = editor.getTextInBufferRange [[0,0], bufPos]
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@scroll preview, mdBeforeTopLine
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# fs.writeFileSync 'C:\\atom\\markdown-scroll-sync\\mdBeforeTopLine.md', mdBeforeTopLine
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lastTopRow = topRow
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lastBotRow = botRow
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, 300
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walkDOM: (node) ->
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node = node.firstChild
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while node
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# console.log 'nodeName', node.nodeName, node.nodeType
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# if node.nodeType is 3 then console.log node.data
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if node.nodeType in [1,8]
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@resultNode = node
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--@numEles
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if @numEles <= 0 then return
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if node.nodeName.toLowerCase().indexOf('atom-') < 0 then @walkDOM node
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# else debugger
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if @numEles <= 0 then return
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node = node.nextSibling
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scroll: (preview, text) ->
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@roaster text, {}, (err, html) =>
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# fs.writeFileSync 'C:\\atom\\markdown-scroll-sync\\htmlBeforeTopLine.html', html
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@numEles = 0
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regex = new RegExp '<([^\\/][a-z]*).*?>', 'g'
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while (match = regex.exec html)
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if match[1].toLowerCase() isnt 'code'
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@numEles++
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# console.log 'before walkDOM', @numEles
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if (@resultNode = preview[0])
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@walkDOM @resultNode
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@resultNode.scrollIntoView()
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# console.log 'walkDOM done', @resultNode
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for previewView in atom.workspace.getPaneItems()
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if previewView instanceof MarkdownPreviewView and
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previewView.editor is editor
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@startTracking editor, previewView
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break
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null
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startTracking: (@editor, previewView) ->
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@editorView = atom.views.getView @editor
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@previewEle = previewView.element
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@chrHgt = @editor.getLineHeightInPixels()
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@lastScrnRow = null
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@lastChrOfs = 0
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@setMap()
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@chkScroll 'init'
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@subs2 = new SubAtom
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@subs2.add @editor .onDidStopChanging => @setMap(); @chkScroll 'changed'
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@subs2.add @editor .onDidChangeCursorPosition => @chkScroll 'cursorMoved'
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@subs2.add @editorView.onDidChangeScrollTop => @chkScroll 'newtop'
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@subs2.add @editor .onDidDestroy => @stopTracking()
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stopTracking: ->
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if @scrollInterval
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clearInterval @scrollInterval
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@scrollInterval = null
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@subs2.dispose() if @subs2
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@subs2 = null
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deactivate: ->
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@stopTracking()
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@subs.dispose()
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mix = (mixinName) ->
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mixin = require './' + mixinName
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for key in Object.keys mixin
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MarkdownScrlSync.prototype[key] = mixin[key]
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mix 'map'
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mix 'scroll'
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mix 'utils'
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module.exports = new MarkdownScrlSync
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@ -0,0 +1,92 @@
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###
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lib/map.coffee
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###
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log = (args...) ->
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console.log.apply console, ['markdown-scroll, map:'].concat args
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module.exports =
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setMap: (getVis = yes) ->
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start = Date.now()
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timings = {}
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if getVis
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@getVisTopHgtBot()
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timings['getVisTopHgtBot'] = Date.now() - start; start = Date.now()
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@nodes = []
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wlkr = document.createTreeWalker @previewEle, NodeFilter.SHOW_TEXT, null, yes
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while (node = wlkr.nextNode())
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text = node.textContent
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if not /\w+/.test text then continue
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[top, hgt, bot] = @getEleTopHgtBot node.parentNode, no
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@nodes.push [top, bot, null, null, text, null]
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timings['tree walk'] = Date.now() - start; start = Date.now()
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nodePtr = 0
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for bufRow in [0..@editor.getLastBufferRow()]
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line = @editor.lineTextForBufferRow bufRow
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if not (matches = line.match /[a-z0-9-\s]+/ig) then continue
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maxLen = 0
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target = null
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for match in matches when /\w+/.test match
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match = match.replace /^\s+|\s+$/g, ''
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if match.length > maxLen
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maxLen = match.length
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target = match
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if target
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nodeMatch = null
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for node, idx in @nodes[nodePtr...]
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if node[4].includes target
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if nodeMatch then nodeMatch = 'dup'; break
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nodeMatch = node
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idxMatch = idx
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if not nodeMatch or nodeMatch is 'dup' then continue
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{start:{row:topRow},end:{row:botRow}} =
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@editor.screenRangeForBufferRange [[bufRow, 0],[bufRow, 9e9]]
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nodeMatch[2] = topRow
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nodeMatch[3] = botRow
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nodeMatch[5] = target # DEBUG
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nodePtr = idxMatch
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timings['node match'] = Date.now() - start; start = Date.now()
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@map = [[0,0,0,0]]
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@lastTopPix = @lastBotPix = @lastTopRow = @lastBotRow = 0
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firstNode = yes
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addNodeToMap = (node) =>
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[topPix, botPix, topRow, botRow] = node
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if topPix < @lastBotPix or
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topRow <= @lastBotRow
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@lastTopPix = Math.min topPix, @lastTopPix
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@lastBotPix = Math.max botPix, @lastBotPix
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@lastTopRow = Math.min topRow, @lastTopRow
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@lastBotRow = Math.max botRow, @lastBotRow
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@map[@map.length - 1] =
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[@lastTopPix, @lastBotPix, @lastTopRow, @lastBotRow]
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else
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if firstNode
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@map[0][1] = topPix
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@map[0][3] = Math.max 0, topRow - 1
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@map.push [@lastTopPix = topPix,
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@lastBotPix = botPix,
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@lastTopRow = topRow,
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@lastBotRow = botRow]
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firstNode = no
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for node in @nodes when node[2] isnt null
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addNodeToMap node
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botRow = @editor.getLastScreenRow()
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topRow = Math.min botRow, @lastBotRow + 1
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addNodeToMap [@lastBotPix, @previewEle.scrollHeight, topRow, botRow]
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@nodes = null
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# timings['map merge'] = Date.now() - start; start = Date.now()
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# str = ''
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# for k, v of timings then str += ' ' + k + ': ' + v
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# log 'timings', str
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@ -0,0 +1,78 @@
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###
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lib/scroll.coffee
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###
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log = (args...) ->
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console.log.apply console, ['markdown-scroll, scroll:'].concat args
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args[0]
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module.exports =
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chkScroll: (eventType, auto) ->
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if @scrollTimeout
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clearTimeout @scrollTimeout
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@scrollTimeout = null
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if not @editor.alive then @stopTracking(); return
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if eventType isnt 'changed'
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@getVisTopHgtBot()
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if @scrnTopOfs isnt @lastScrnTopOfs or
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@scrnBotOfs isnt @lastScrnBotOfs or
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@previewTopOfs isnt @lastPvwTopOfs or
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@previewBotOfs isnt @lastPvwBotOfs
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@lastScrnTopOfs = @scrnTopOfs
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@lastScrnBotOfs = @scrnBotOfs
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@lastPvwTopOfs = @previewTopOfs
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@lastPvwBotOfs = @previewBotOfs
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@setMap no
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switch eventType
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when 'init'
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cursorOfs = @editor.getCursorScreenPosition().row * @chrHgt
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if @scrnTopOfs <= cursorOfs <= @scrnBotOfs
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@setScroll cursorOfs
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else @setScroll @scrnTopOfs
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when 'changed', 'cursorMoved'
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@setScroll @editor.getCursorScreenPosition().row * @chrHgt
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@ignoreScrnScrollUntil = Date.now() + 500
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when 'newtop'
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if @ignoreScrnScrollUntil and
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Date.now() < @ignoreScrnScrollUntil then break
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@ignoreScrnScrollUntil = null
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scrollFrac = @scrnTopOfs / (@scrnScrollHgt - @scrnHeight)
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@setScroll @scrnTopOfs + (@scrnHeight * scrollFrac)
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if not auto
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@scrollTimeout = setTimeout (=> @chkScroll 'newtop', yes), 300
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setScroll: (scrnPosPix) ->
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scrnPosPix = Math.max 0, scrnPosPix
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lastMapping = null
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for mapping, idx in @map
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[topPix, botPix, topRow, botRow] = mapping
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if (topRow * @chrHgt) <= scrnPosPix < ((botRow+1) * @chrHgt) or
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idx is @map.length - 1
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row1 = topRow
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row2 = botRow + 1
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pix1 = topPix
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pix2 = botPix
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break
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else
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lastMapping ?= mapping
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lastBotPix = lastMapping[1]
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lastBotRow = lastMapping[3] + 1
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if (lastBotRow * @chrHgt) <= scrnPosPix < (topRow * @chrHgt)
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row1 = lastBotRow
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row2 = topRow
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pix1 = lastBotPix
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pix2 = topPix
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break
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lastMapping = mapping
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spanFrac = (scrnPosPix - (row1 * @chrHgt)) / ((row2 - row1) * @chrHgt)
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visOfs = scrnPosPix - @scrnTopOfs
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pvwPosPix = pix1 + ((pix2 - pix1) * spanFrac)
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@previewEle.scrollTop = pvwPosPix - visOfs
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@ -0,0 +1,42 @@
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###
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lib/utils.coffee
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###
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log = (args...) ->
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console.log.apply console, ['markdown-scroll, utils:'].concat args
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module.exports =
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getVisTopHgtBot: ->
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{top: @edtTopBnd, bottom: edtBotBnd} = @editorView.getBoundingClientRect()
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lineEles = @editorView.shadowRoot.querySelectorAll '.lines .line[data-screen-row]'
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lines = []
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for lineEle in lineEles
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{top: lineTopBnd} = lineEle.getBoundingClientRect()
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lines.push [+lineEle.getAttribute('data-screen-row'), lineTopBnd]
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if lines.length is 0
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log 'no visible lines in editor'
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@scrnTopOfs = @scrnBotOfs = @pvwTopB = @previewTopOfs = @previewBotOfs = 0
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return
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lines.sort()
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for refLine in lines
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if refLine[1] >= @edtTopBnd then break
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[refRow, refTopBnd] = refLine
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@scrnTopOfs = (refRow * @chrHgt) - (refTopBnd - @edtTopBnd)
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@scrnHeight = edtBotBnd - @edtTopBnd
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@scrnBotOfs = @scrnTopOfs + @scrnHeight
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botScrnScrollRow = @editor.clipScreenPosition([9e9, 9e9]).row
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@scrnScrollHgt = (botScrnScrollRow + 1) * @chrHgt
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{top: @pvwTopBnd, bottom: pvwBotBnd} = @previewEle.getBoundingClientRect()
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@previewTopOfs = @previewEle.scrollTop
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@previewBotOfs = @previewTopOfs + (pvwBotBnd - @pvwTopBnd)
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getEleTopHgtBot: (ele, scrn = yes) ->
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{top:eleTopBnd, bottom: eleBotBnd} = ele.getBoundingClientRect()
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top = if scrn then @scrnTopOfs + (eleTopBnd - @edtTopBnd) \
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else @previewTopOfs + (eleTopBnd - @pvwTopBnd)
|
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hgt = eleBotBnd - eleTopBnd
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bot = top + hgt
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[top, hgt, bot]
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14
package.json
14
package.json
|
|
@ -1,16 +1,20 @@
|
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{
|
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"name": "markdown-scroll-sync",
|
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"main": "./lib/main",
|
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"version": "0.4.2",
|
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"version": "2.0.0",
|
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"description": "Auto-scroll markdown-preview tab to match markdown source",
|
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"repository": "https://github.com/mark-hahn/markdown-scroll-sync",
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"license": "MIT",
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"engines": {
|
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"atom": ">0.180.0"
|
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"atom": ">1.0.0"
|
||||
},
|
||||
"keywords": [
|
||||
"markdown",
|
||||
"preview",
|
||||
"scroll",
|
||||
"sync"
|
||||
],
|
||||
"dependencies": {
|
||||
"space-pen": "*",
|
||||
"sub-atom": "*",
|
||||
"roaster": "^1.1.2"
|
||||
"sub-atom": "*"
|
||||
}
|
||||
}
|
||||
|
|
|
|||
101
test.md
101
test.md
|
|
@ -1,101 +0,0 @@
|
|||
# AR/VR Report
|
||||
* This report try to explain the definition of AR and VR
|
||||
* Those concepts are very young.
|
||||
* Their definitions is still very vague.
|
||||
* Just trying to better understand the meaning of those words.
|
||||
* I gather here thoughts i had recently about those new realities.
|
||||
it clarifies those concepts for me.
|
||||
|
||||
|
||||
# Difference between AR and VR
|
||||
* here those difference are based on current usage of those terms.
|
||||
As their definitions are vague, the difference 2 terms is likely to
|
||||
become more precise as we are moving along.
|
||||
|
||||
### Various Fields to Consider
|
||||
Here are various fields on which we can compare and classify current AR and VR
|
||||
technology. It may be a good idea to classify each existing devices.
|
||||
It will helps clarify all those concepts
|
||||
|
||||
Here are possible fields:
|
||||
|
||||
* the content they are displaying
|
||||
* the technology used
|
||||
* to describe it
|
||||
* is it available now ?
|
||||
* if not yet available, how far fetch it is ?
|
||||
* it goes into the feasibility of the product
|
||||
* How to interact with this reality? Joypad, depth sensors like kinect or
|
||||
leap motion. Keyboard. Issue of opaque display... You don't see your hands
|
||||
so simple thing like topping on a keyboard is directly very hard when
|
||||
you wear and oculus
|
||||
* Is it mobile? Gear vr, Google cardboard are mobile. Oculus is not. Leap
|
||||
motion is not. Likely his to be in the future?
|
||||
* How to display it. Where is the screen for the user. Is there a single
|
||||
screens?
|
||||
Or two, one for each eye. Is it see thru display. Is it more normal opaque
|
||||
screen. Can user perceive depth
|
||||
* Relation between screen position and the latency issue to fool the brain
|
||||
* VR implies to fool the brain about very primal things about balance.
|
||||
The famous latency issue.
|
||||
The one that makes you disy, sea sick and potentially throw up.
|
||||
Believe me, after that, you don't want to do it again...
|
||||
|
||||
## Content Topic
|
||||
* AR and VR differs greatly when it comes to the topic of their content
|
||||
|
||||
**About Virtual Reality**
|
||||
* VR is about transporting the user in a virtual reality
|
||||
* This reality is different to the normal world surrounding the user
|
||||
* the user must deeply immersed in this world. the normal
|
||||
world must disapears.
|
||||
|
||||
### Old notes
|
||||
* Virtual reality is about an other reality. Not like the actual reality that
|
||||
surround you.
|
||||
* Virtual reality is close to the scope of entertainment because it can
|
||||
display any reality even the fixtuous ones. it goes from the realty
|
||||
displayed in game. Even GtaV.
|
||||
* We can imagine how the actual movie industry could use vR to display a
|
||||
new kind of movie
|
||||
* Augmented reality is about modifying our reality.
|
||||
* The current works we live in.
|
||||
* It is a way more profound change.
|
||||
* AR is more about utilities. VR is more about entertainment
|
||||
* What reality is displayed? What is the type of content. Is it purely
|
||||
virtual or is it our current reality with a little bit on top
|
||||
|
||||
## Interaction
|
||||
|
||||
### Type of inputs available
|
||||
* touch screen
|
||||
* any mobile devices, phone, or tablets
|
||||
* depth sensor
|
||||
* leap motion, kinect, tango
|
||||
* device orientation
|
||||
* device location
|
||||
* precision: gps is crap
|
||||
* using markers
|
||||
* keyboard
|
||||
|
||||
### Product Available
|
||||
* kinect
|
||||
* leap motion
|
||||
* various joystick: joypad, other ?
|
||||
* device orientation
|
||||
|
||||
## Mobility
|
||||
* Real important when it comes to application
|
||||
* a mobile device provides more freedom
|
||||
* You can use it in the street potentially
|
||||
* To have wires conecting you to a computer limits your freedom
|
||||
* It is especially important in AR/VR because they are about giving
|
||||
freedom to access new spaces
|
||||
* to have wireless devices make a great difference
|
||||
|
||||
## Do You put this one all the time or only some times with a specific purpose
|
||||
* how long are they used
|
||||
* it goes to confort, weight
|
||||
* it goes into privacy
|
||||
* if a personn wears them in a restaurant, people around the users got some reasonable expectations of privacy
|
||||
* when a personns wears them at work, people got other expectations of privacy
|
||||
Loading…
Reference in New Issue