try to load colorcode if url passed in window.location

2 files changed, 78 insertions, 8 deletions

diff --git a/js/app.js b/js/app.js
index 9dd94ee..a96cc35 100644
--- a/js/app.js
+++ b/js/app.js
@@ -13,6 +13,7 @@ var current_tool, current_filetool, current_canvas
 function init () {
   build()
   bind()
+  clipboard.load_from_location()
 }
 function build () {
   shader.init()
@@ -42,6 +43,7 @@ function bind () {
   brush.bind()
   controls.bind()
   keys.bind()
+  clipboard.bind()
   
   window.addEventListener('mouseup', function(e){
     dragging = erasing = false
diff --git a/js/clipboard.js b/js/clipboard.js
index 94a061d..01ca784 100644
--- a/js/clipboard.js
+++ b/js/clipboard.js
@@ -74,8 +74,8 @@ var clipboard = (function () {
       
     },
     
-    import_colorcode: function () {
-      var data = import_textarea.value
+    import_colorcode: function (data, no_undo) {
+      data = data || import_textarea.value
       
       var irssi_style_regex = /^\s*\/exec -out printf ("%b" )?"/;
 
@@ -98,10 +98,10 @@ var clipboard = (function () {
 
       var json = colorcode.to_json(data, {fg:0, bg:1})
 
-      undo.new()
-      undo.save_rect(0,0, canvas.w, canvas.h)
+      if (!no_undo) undo.new()
+      if (!no_undo) undo.save_rect(0,0, canvas.w, canvas.h)
       if (json.w !== canvas.w || json.h !== canvas.h){
-        undo.save_size(canvas.w, canvas.h)
+        if (!no_undo) undo.save_size(canvas.w, canvas.h)
         canvas.resize(json.w, json.h, true)
       }
       canvas.clear()
@@ -231,11 +231,79 @@ var clipboard = (function () {
         upload(blob, filename, tag)
       }
       clipboard.export_canvas(upload_fn)
-    },
+    }
+
+  }
+ 
+  function parse_url_search_params(url){
+    var params = {}
+    url = url.split('?')
+    if (url.length < 2) return params
+
+    var search = url[1].split('&')
+    for (var i = 0, pair; pair = search[i]; i++){
+      pair = pair.split('=')
+      if (pair.length < 2) continue
+      var key = pair[0]
+      var val = pair[1]
+      if (key in params){
+         if (typeof params[key] === 'string'){
+          params[key] = [params[key], val]
+         }
+         else params[key].push(val)
+      }
+      else params[key] = val
+    }
+    return params
+  }
+
+  function get_filetype(txt){
+    txt = txt.split('.')
+    return txt[txt.length - 1].toLowerCase() 
+  }
+
+  function fetch_url(url, f, type){
+    type = type || 'arraybuffer'
+    url = "/cgi-bin/proxy?" + url
+    // url = "http://198.199.72.134/cors/" + url
+    var xhr = new XMLHttpRequest()
+    xhr.open('GET', url, true)
+    xhr.responseType = type
+    xhr.addEventListener('load', function(){ f(xhr.response) })
+    xhr.send()
+  }
+
+  function load_text(txt){
+    clipboard.import_colorcode(txt, true)
+  }
+
+  function load_png(buf){
+    var chunks = PNG.decode(buf)
+    if (!chunks) return
+    var itxt_chunks = []
+    for (var i=0, c; c=chunks[i]; i++){
+      if (c.type !== 'iTXt') continue
+      var itxt = PNG.decode_itxt_chunk(c)
+      if (!itxt.keyword || itxt.keyword !== 'colorcode') continue
+      clipboard.import_colorcode(itxt.data, true)
+    }
+  }
+ 
+  exports.load_from_location = function(){
+    var params = parse_url_search_params(window.location + '')
+    if (!params.url) return
+    var url = params.url
+    var type = get_filetype(url)
+    switch (type){
+      case 'txt':
+        fetch_url(url, load_text, 'text')
+        break
+      case 'png':
+        fetch_url(url, load_png)
+        break
+    } 
 
   }
-  
-  exports.bind()
   
   return exports