Album.lua

Album = class()

function Album:init()
    self.title = ""
    self.comment = ""
    self.firstPhoto = "Documents:Frame"
    self.photos = {}

    self.x = 0
    self.y = 0
    self.size = 600
    self.displayX = 0
    self.displayY = 0
    self.displaySize = 600
    self.minx = 0
    self.maxx = 0
    self.miny = 0
    self.maxy = 0
    
    self.sizeincrement = 0
    self.whenToZoom = math.random(10, 1000)
    
    self.iconindex = 1
    

end

function Album:draw()
    if viewMode == TOPVIEW then
        
        if view.framesSinceLastTouch > self.whenToZoom then
            self.sizeincrement = math.min(self.sizeincrement + 0.05, 100)
        else
            self.sizeincrement = 0
        end

        self.displayX = self.x-self.sizeincrement/2
        self.displayY = self.y-self.sizeincrement/2
        self.displaySize = self.size + self.sizeincrement
        

        self.photos[self.iconindex]:download()
        clip(self.x-view.offset,self.y,self.size,self.size*2/3)
        sprite(self.photos[self.iconindex].photo, self.displayX, self.displayY, self.displaySize) 
        clip()

        pushMatrix()
        stroke(0, 0, 0, 255)
        translate(0,0,1)
        strokeWidth(25)
        line(self.minx,self.miny,self.maxx,self.miny)
        line(self.minx,self.maxy,self.maxx,self.maxy)
        line(self.minx,self.miny,self.minx,self.maxy)
        line(self.maxx,self.miny,self.maxx,self.maxy)

        if view.maxOffset < self.x+self.size-WIDTH then
            view.maxOffset = self.x+self.size-WIDTH
        end

        fontSize(40)


        fill(0, 0, 0, 255)

        translate(15, 5, 2)
        text(self.title, self.x, self.y)
        translate(-1, 2, 2)

        fill(192, 192, 192, 255)

        text(self.title, self.x, self.y)
        popMatrix()
    elseif viewMode == ALBUM then
        fill(64, 64, 64, 255)
        strokeWidth(0)
        rect(0,0,300,HEIGHT)
        fill(0, 0, 0, 255)
        fontSize(32)
        text(self.title, 20, HEIGHT/2-50)
        textWrapWidth(260)
        fontSize(15)
        sx,sy = textSize(self.comment)
        text(self.comment, 20, HEIGHT/2-60-sy)
        textWrapWidth(0)
        for _, photo in pairs(self.photos) do
            photo:draw()
        end
    elseif viewMode == PHOTO then
        currentPhoto:draw()
    end
end

function Album:touched(touch)
    tx = view.touch.x+view.offset
    ty = view.touch.y

    for _, photo in pairs(self.photos) do
        if tx > photo.minx and tx < photo.maxx and ty > photo.miny and ty < photo.maxy then
            currentPhoto = photo
            viewMode = PHOTO

        end
    end
end
 

Galleries.lua

function parseData(data, status, headers)
    print("parsedata")
    if albums["Mexico"] ~= nil then
        olddata = readLocalData("layout", "")
        if data == olddata then
            return
        else
            --if false then
            for _, album in pairs(albums) do
                if album.title ~= "Water Molotov" then
                    for __, photo in pairs(album.photos) do
                        photo.photo = nil
                        photo = nil
                    end
                    print("deleting "..album.title)
                    albums[album.title] = nil
                end
            end
            collectgarbage()

            --sound(SOUND_JUMP, 1271)

        end
    end

    saveLocalData("layout", data)
    
    for entry in string.gmatch(data, "[^\r\n]+") do

        r = {}

        for x in string.gmatch(entry, '[^#]+') do
            table.insert(r, x)

        end

        if r[1] == "A" then
            album = r[2]
            if albums[album] == nil then
                print("creating "..album)
                albums[album] = Album()
            end
            albums[album].title = album
            albums[album].x = photox*r[3] + 500
            albums[album].y = photoy*r[4]
            albums[album].size = photox*r[5]
            albums[album].displaySize = photox*r[5]
            albums[album].iconindex = tonumber(r[6])
            if albums[album].iconindex == 2.5 then
                albums[album].iconindex = 2
                albums[album].size = photox*2.5
                albums[album].displaySize = photox*2.5
            end
            albums[album].comment = r[7]
            albums[album].minx = albums[album].x
            albums[album].miny = albums[album].y
            albums[album].maxx = albums[album].x + albums[album].size
            albums[album].maxy = albums[album].y + albums[album].size*2/3
        end
        if r[1] == "I" then
            album = r[2]
            local xpos = r[3]
            local ypos = r[4]
            local sizefactor = r[5]
            local title = r[6]
            local url = r[7]
        
            if albums[album] == nil then
                albums[album] = Album()
            end

            currentAlbum = albums[album]
            albums[album].title = album
            p = Photo()
            p.url = url
            p.title = title
            p.x = photox * xpos + 300
            p.y = photoy * ypos
            p.size = photox * sizefactor
            p.displaySize = p.size
                
            p.minx = p.x
            p.miny = p.y
            p.maxx = p.x + p.size
            p.maxy = p.y + p.size*2/3
            
            for x in string.gmatch(p.url, '[^/]+') do
                p.filename = x
            end
            p.filename = string.sub(p.filename, 1, -5)

            table.insert(albums[album].photos, p)
        end
    end
    
    -- Go through albums and fill in prev and next for each photo
    for _, a in pairs(albums) do
        for i = 1, #a.photos do
            if i > 1 then
                a.photos[i].prev = a.photos[i-1]
            end
            if i < #a.photos then
                a.photos[i].next = a.photos[i+1]
            end
        end
    end
            

    if false then
    for __, a in pairs(albums) do
        for _, p in pairs(a.photos) do
            if p.downloaded == false then
                http.request(p.url, function(theImage, status, head)
                    p.photo = theImage
                    p.downloaded = true
                end)
            end
        end
    end
    end
    
end

function table.contains(table, element)
    for _, value in pairs(table) do
        if value == element then
            return true
        end
    end
    return false
end

JSON.lua

    -- Module options:
    local always_try_using_lpeg = true

    --[==[

David Kolf's JSON module for Lua 5.1/5.2
========================================

*Version 2.2*

This module writes no global values, not even the module table.
Import it using

    json = require ("dkjson")
    
EDIT: this version included in Gister writes a single value 'json', as Codea disallows require -ap

Exported functions and values:

`json.encode (object [, state])`
--------------------------------

Create a string representing the object. `Object` can be a table,
a string, a number, a boolean, `nil`, `json.null` or any object with
a function `__tojson` in its metatable. A table can only use strings
and numbers as keys and its values have to be valid objects as
well. It raises an error for any invalid data types or reference
cycles.

`state` is an optional table with the following fields:

  - `indent`  
    When `indent` (a boolean) is set, the created string will contain
    newlines and indentations. Otherwise it will be one long line.
  - `keyorder`  
    `keyorder` is an array to specify the ordering of keys in the
    encoded output. If an object has keys which are not in this array
    they are written after the sorted keys.
  - `level`  
    This is the initial level of indentation used when `indent` is
    set. For each level two spaces are added. When absent it is set
    to 0.
  - `buffer`  
    `buffer` is an array to store the strings for the result so they
    can be concatenated at once. When it isn't given, the encode
    function will create it temporary and will return the
    concatenated result.
  - `bufferlen`  
    When `bufferlen` is set, it has to be the index of the last
    element of `buffer`.
  - `tables`  
    `tables` is a set to detect reference cycles. It is created
    temporary when absent. Every table that is currently processed
    is used as key, the value is `true`.

When `state.buffer` was set, the return value will be `true` on
success. Without `state.buffer` the return value will be a string.

`json.decode (string [, position [, null]])`
--------------------------------------------

Decode `string` starting at `position` or at 1 if `position` was
omitted.

`null` is an optional value to be returned for null values. The
default is `nil`, but you could set it to `json.null` or any other
value.

The return values are the object or `nil`, the position of the next
character that doesn't belong to the object, and in case of errors
an error message.

Two metatables are created. Every array or object that is decoded gets
a metatable with the `__jsontype` field set to either `array` or
`object`. If you want to provide your own metatables use the syntax

    json.decode (string, position, null, objectmeta, arraymeta)

To prevent the assigning of metatables pass `nil`:

    json.decode (string, position, null, nil)

`<metatable>.__jsonorder`
-------------------------

`__jsonorder` can overwrite the `keyorder` for a specific table.

`<metatable>.__jsontype`
------------------------

`__jsontype` can be either `"array"` or `"object"`. This value is only
checked for empty tables. (The default for empty tables is `"array"`).

`<metatable>.__tojson (self, state)`
------------------------------------

You can provide your own `__tojson` function in a metatable. In this
function you can either add directly to the buffer and return true,
or you can return a string. On errors nil and a message should be
returned.

`json.null`
-----------

You can use this value for setting explicit `null` values.

`json.version`
--------------

Set to `"dkjson 2.2"`.

`json.quotestring (string)`
---------------------------

Quote a UTF-8 string and escape critical characters using JSON
escape sequences. This function is only necessary when you build
your own `__tojson` functions.

`json.addnewline (state)`
-------------------------

When `state.indent` is set, add a newline to `state.buffer` and spaces
according to `state.level`.

LPeg support
------------

When the local configuration variable `always_try_using_lpeg` is set,
this module tries to load LPeg to replace the `decode` function. The
speed increase is significant. You can get the LPeg module at
  <http://www.inf.puc-rio.br/~roberto/lpeg/>.
When LPeg couldn't be loaded, the pure Lua functions stay active.

In case you don't want this module to require LPeg on its own,
disable the option `always_try_using_lpeg` in the options section at
the top of the module.

In this case you can later load LPeg support using

### `json.use_lpeg ()`

Require the LPeg module and replace the functions `quotestring` and
and `decode` with functions that use LPeg patterns.
This function returns the module table, so you can load the module
using:

    json = require "dkjson".use_lpeg()

Alternatively you can use `pcall` so the JSON module still works when
LPeg isn't found.

    json = require "dkjson"
    pcall (json.use_lpeg)

### `json.using_lpeg`

This variable is set to `true` when LPeg was loaded successfully.

---------------------------------------------------------------------

Contact
-------

You can contact the author by sending an e-mail to 'kolf' at the
e-mail provider 'gmx.de'.

---------------------------------------------------------------------

*Copyright (C) 2010, 2011, 2012 David Heiko Kolf*

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

<!-- This documentation can be parsed using Markdown to generate HTML.
     The source code is enclosed in a HTML comment so it won't be displayed
     by browsers, but it should be removed from the final HTML file as
     it isn't a valid HTML comment (and wastes space).
  -->

  <!--]==]

-- global dependencies:
local pairs, type, tostring, tonumber, getmetatable, setmetatable, rawset =
      pairs, type, tostring, tonumber, getmetatable, setmetatable, rawset
local error, require, pcall, select = error, require, pcall, select
local floor, huge = math.floor, math.huge
local strrep, gsub, strsub, strbyte, strchar, strfind, strlen, strformat =
      string.rep, string.gsub, string.sub, string.byte, string.char,
      string.find, string.len, string.format
local concat = table.concat

local _ENV = nil -- blocking globals in Lua 5.2

json = { version = "dkjson 2.2" }

pcall (function()
  -- Enable access to blocked metatables.
  -- Don't worry, this module doesn't change anything in them.
  local debmeta = require "debug".getmetatable
  if debmeta then getmetatable = debmeta end
end)

json.null = setmetatable ({}, {
  __tojson = function () return "null" end
})

local function isarray (tbl)
  local max, n, arraylen = 0, 0, 0
  for k,v in pairs (tbl) do
    if k == 'n' and type(v) == 'number' then
      arraylen = v
      if v > max then
        max = v
      end
    else
      if type(k) ~= 'number' or k < 1 or floor(k) ~= k then
        return false
      end
      if k > max then
        max = k
      end
      n = n + 1
    end
  end
  if max > 10 and max > arraylen and max > n * 2 then
    return false -- don't create an array with too many holes
  end
  return true, max
end

local escapecodes = {
  ["\""] = "\\\"", ["\\"] = "\\\\", ["\b"] = "\\b", ["\f"] = "\\f",
  ["\n"] = "\\n",  ["\r"] = "\\r",  ["\t"] = "\\t"
}

local function escapeutf8 (uchar)
  local value = escapecodes[uchar]
  if value then
    return value
  end
  local a, b, c, d = strbyte (uchar, 1, 4)
  a, b, c, d = a or 0, b or 0, c or 0, d or 0
  if a <= 0x7f then
    value = a
  elseif 0xc0 <= a and a <= 0xdf and b >= 0x80 then
    value = (a - 0xc0) * 0x40 + b - 0x80
  elseif 0xe0 <= a and a <= 0xef and b >= 0x80 and c >= 0x80 then
    value = ((a - 0xe0) * 0x40 + b - 0x80) * 0x40 + c - 0x80
  elseif 0xf0 <= a and a <= 0xf7 and b >= 0x80 and c >= 0x80 and d >= 0x80 then
    value = (((a - 0xf0) * 0x40 + b - 0x80) * 0x40 + c - 0x80) * 0x40 + d - 0x80
  else
    return ""
  end
  if value <= 0xffff then
    return strformat ("\\u%.4x", value)
  elseif value <= 0x10ffff then
    -- encode as UTF-16 surrogate pair
    value = value - 0x10000
    local highsur, lowsur = 0xD800 + floor (value/0x400), 0xDC00 + (value % 0x400)
    return strformat ("\\u%.4x\\u%.4x", highsur, lowsur)
  else
    return ""
  end
end

local function fsub (str, pattern, repl)
  -- gsub always builds a new string in a buffer, even when no match
  -- exists. First using find should be more efficient when most strings
  -- don't contain the pattern.
  if strfind (str, pattern) then
    return gsub (str, pattern, repl)
  else
    return str
  end
end

local function quotestring (value)
  -- based on the regexp "escapable" in https://github.com/douglascrockford/JSON-js
  value = fsub (value, "[%z\1-\31\"\\\127]", escapeutf8)
  if strfind (value, "[\194\216\220\225\226\239]") then
    value = fsub (value, "\194[\128-\159\173]", escapeutf8)
    value = fsub (value, "\216[\128-\132]", escapeutf8)
    value = fsub (value, "\220\143", escapeutf8)
    value = fsub (value, "\225\158[\180\181]", escapeutf8)
    value = fsub (value, "\226\128[\140-\143\168\175]", escapeutf8)
    value = fsub (value, "\226\129[\160-\175]", escapeutf8)
    value = fsub (value, "\239\187\191", escapeutf8)
    value = fsub (value, "\239\191[\176\191]", escapeutf8)
  end
  return "\"" .. value .. "\""
end
json.quotestring = quotestring

local function addnewline2 (level, buffer, buflen)
  buffer[buflen+1] = "\n"
  buffer[buflen+2] = strrep ("  ", level)
  buflen = buflen + 2
  return buflen
end

function json.addnewline (state)
  if state.indent then
    state.bufferlen = addnewline2 (state.level or 0,
                           state.buffer, state.bufferlen or #(state.buffer))
  end
end

local encode2 -- forward declaration

local function addpair (key, value, prev, indent, level, buffer, buflen, tables, globalorder)
  local kt = type (key)
  if kt ~= 'string' and kt ~= 'number' then
    return nil, "type '" .. kt .. "' is not supported as a key by JSON."
  end
  if prev then
    buflen = buflen + 1
    buffer[buflen] = ","
  end
  if indent then
    buflen = addnewline2 (level, buffer, buflen)
  end
  buffer[buflen+1] = quotestring (key)
  buffer[buflen+2] = ":"
  return encode2 (value, indent, level, buffer, buflen + 2, tables, globalorder)
end

encode2 = function (value, indent, level, buffer, buflen, tables, globalorder)
  local valtype = type (value)
  local valmeta = getmetatable (value)
  valmeta = type (valmeta) == 'table' and valmeta -- only tables
  local valtojson = valmeta and valmeta.__tojson
  if valtojson then
    if tables[value] then
      return nil, "reference cycle"
    end
    tables[value] = true
    local state = {
        indent = indent, level = level, buffer = buffer,
        bufferlen = buflen, tables = tables, keyorder = globalorder
    }
    local ret, msg = valtojson (value, state)
    if not ret then return nil, msg end
    tables[value] = nil
    buflen = state.bufferlen
    if type (ret) == 'string' then
      buflen = buflen + 1
      buffer[buflen] = ret
    end
  elseif value == nil then
    buflen = buflen + 1
    buffer[buflen] = "null"
  elseif valtype == 'number' then
    local s
    if value ~= value or value >= huge or -value >= huge then
      -- This is the behaviour of the original JSON implementation.
      s = "null"
    else
      s = tostring (value)
    end
    buflen = buflen + 1
    buffer[buflen] = s
  elseif valtype == 'boolean' then
    buflen = buflen + 1
    buffer[buflen] = value and "true" or "false"
  elseif valtype == 'string' then
    buflen = buflen + 1
    buffer[buflen] = quotestring (value)
  elseif valtype == 'table' then
    if tables[value] then
      return nil, "reference cycle"
    end
    tables[value] = true
    level = level + 1
    local isa, n = isarray (value)
    if n == 0 and valmeta and valmeta.__jsontype == 'object' then
      isa = false
    end
    local msg
    if isa then -- JSON array
      buflen = buflen + 1
      buffer[buflen] = "["
      for i = 1, n do
        buflen, msg = encode2 (value[i], indent, level, buffer, buflen, tables, globalorder)
        if not buflen then return nil, msg end
        if i < n then
          buflen = buflen + 1
          buffer[buflen] = ","
        end
      end
      buflen = buflen + 1
      buffer[buflen] = "]"
    else -- JSON object
      local prev = false
      buflen = buflen + 1
      buffer[buflen] = "{"
      local order = valmeta and valmeta.__jsonorder or globalorder
      if order then
        local used = {}
        n = #order
        for i = 1, n do
          local k = order[i]
          local v = value[k]
          if v then
            used[k] = true
            buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder)
            prev = true -- add a seperator before the next element
          end
        end
        for k,v in pairs (value) do
          if not used[k] then
            buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder)
            if not buflen then return nil, msg end
            prev = true -- add a seperator before the next element
          end
        end
      else -- unordered
        for k,v in pairs (value) do
          buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder)
          if not buflen then return nil, msg end
          prev = true -- add a seperator before the next element
        end
      end
      if indent then
        buflen = addnewline2 (level - 1, buffer, buflen)
      end
      buflen = buflen + 1
      buffer[buflen] = "}"
    end
    tables[value] = nil
  else
    return nil, "type '" .. valtype .. "' is not supported by JSON."
  end
  return buflen
end

function json.encode (value, jstate)
  local jstate = jstate or {}
  local oldbuffer = jstate.buffer
  local buffer = oldbuffer or {}
  local ret, msg = encode2 (value, jstate.indent, jstate.level or 0,
                   buffer, jstate.bufferlen or 0, jstate.tables or {}, jstate.keyorder)
  if not ret then
    error (msg, 2)
  elseif oldbuffer then
    state.bufferlen = ret
    return true
  else
    return concat (buffer)
  end
end

local function loc (str, where)
  local line, pos, linepos = 1, 1, 0
  while true do
    pos = strfind (str, "\n", pos, true)
    if pos and pos < where then
      line = line + 1
      linepos = pos
      pos = pos + 1
    else
      break
    end
  end
  return "line " .. line .. ", column " .. (where - linepos)
end

local function unterminated (str, what, where)
  return nil, strlen (str) + 1, "unterminated " .. what .. " at " .. loc (str, where)
end

local function scanwhite (str, pos)
  while true do
    pos = strfind (str, "%S", pos)
    if not pos then return nil end
    if strsub (str, pos, pos + 2) == "\239\187\191" then
      -- UTF-8 Byte Order Mark
      pos = pos + 3
    else
      return pos
    end
  end
end

local escapechars = {
  ["\""] = "\"", ["\\"] = "\\", ["/"] = "/", ["b"] = "\b", ["f"] = "\f",
  ["n"] = "\n", ["r"] = "\r", ["t"] = "\t"
}

local function unichar (value)
  if value < 0 then
    return nil
  elseif value <= 0x007f then
    return strchar (value)
  elseif value <= 0x07ff then
    return strchar (0xc0 + floor(value/0x40),
                    0x80 + (floor(value) % 0x40))
  elseif value <= 0xffff then
    return strchar (0xe0 + floor(value/0x1000),
                    0x80 + (floor(value/0x40) % 0x40),
                    0x80 + (floor(value) % 0x40))
  elseif value <= 0x10ffff then
    return strchar (0xf0 + floor(value/0x40000),
                    0x80 + (floor(value/0x1000) % 0x40),
                    0x80 + (floor(value/0x40) % 0x40),
                    0x80 + (floor(value) % 0x40))
  else
    return nil
  end
end

local function scanstring (str, pos)
  local lastpos = pos + 1
  local buffer, n = {}, 0
  while true do
    local nextpos = strfind (str, "[\"\\]", lastpos)
    if not nextpos then
      return unterminated (str, "string", pos)
    end
    if nextpos > lastpos then
      n = n + 1
      buffer[n] = strsub (str, lastpos, nextpos - 1)
    end
    if strsub (str, nextpos, nextpos) == "\"" then
      lastpos = nextpos + 1
      break
    else
      local escchar = strsub (str, nextpos + 1, nextpos + 1)
      local value
      if escchar == "u" then
        value = tonumber (strsub (str, nextpos + 2, nextpos + 5), 16)
        if value then
          local value2
          if 0xD800 <= value and value <= 0xDBff then
            -- we have the high surrogate of UTF-16. Check if there is a
            -- low surrogate escaped nearby to combine them.
            if strsub (str, nextpos + 6, nextpos + 7) == "\\u" then
              value2 = tonumber (strsub (str, nextpos + 8, nextpos + 11), 16)
              if value2 and 0xDC00 <= value2 and value2 <= 0xDFFF then
                value = (value - 0xD800)  * 0x400 + (value2 - 0xDC00) + 0x10000
              else
                value2 = nil -- in case it was out of range for a low surrogate
              end
            end
          end
          value = value and unichar (value)
          if value then
            if value2 then
              lastpos = nextpos + 12
            else
              lastpos = nextpos + 6
            end
          end
        end
      end
      if not value then
        value = escapechars[escchar] or escchar
        lastpos = nextpos + 2
      end
      n = n + 1
      buffer[n] = value
    end
  end
  if n == 1 then
    return buffer[1], lastpos
  elseif n > 1 then
    return concat (buffer), lastpos
  else
    return "", lastpos
  end
end

local scanvalue -- forward declaration

local function scantable (what, closechar, str, startpos, nullval, objectmeta, arraymeta)
  local len = strlen (str)
  local tbl, n = {}, 0
  local pos = startpos + 1
  if what == 'object' then
    setmetatable (tbl, objectmeta)
  else
    setmetatable (tbl, arraymeta)
  end
  while true do
    pos = scanwhite (str, pos)
    if not pos then return unterminated (str, what, startpos) end
    local char = strsub (str, pos, pos)
    if char == closechar then
      return tbl, pos + 1
    end
    local val1, err
    val1, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
    if err then return nil, pos, err end
    pos = scanwhite (str, pos)
    if not pos then return unterminated (str, what, startpos) end
    char = strsub (str, pos, pos)
    if char == ":" then
      if val1 == nil then
        return nil, pos, "cannot use nil as table index (at " .. loc (str, pos) .. ")"
      end
      pos = scanwhite (str, pos + 1)
      if not pos then return unterminated (str, what, startpos) end
      local val2
      val2, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
      if err then return nil, pos, err end
      tbl[val1] = val2
      pos = scanwhite (str, pos)
      if not pos then return unterminated (str, what, startpos) end
      char = strsub (str, pos, pos)
    else
      n = n + 1
      tbl[n] = val1
    end
    if char == "," then
      pos = pos + 1
    end
  end
end

scanvalue = function (str, pos, nullval, objectmeta, arraymeta)
  pos = pos or 1
  pos = scanwhite (str, pos)
  if not pos then
    return nil, strlen (str) + 1, "no valid JSON value (reached the end)"
  end
  local char = strsub (str, pos, pos)
  if char == "{" then
    return scantable ('object', "}", str, pos, nullval, objectmeta, arraymeta)
  elseif char == "[" then
    return scantable ('array', "]", str, pos, nullval, objectmeta, arraymeta)
  elseif char == "\"" then
    return scanstring (str, pos)
  else
    local pstart, pend = strfind (str, "^%-?[%d%.]+[eE]?[%+%-]?%d*", pos)
    if pstart then
      local number = tonumber (strsub (str, pstart, pend))
      if number then
        return number, pend + 1
      end
    end
    pstart, pend = strfind (str, "^%a%w*", pos)
    if pstart then
      local name = strsub (str, pstart, pend)
      if name == "true" then
        return true, pend + 1
      elseif name == "false" then
        return false, pend + 1
      elseif name == "null" then
        return nullval, pend + 1
      end
    end
    return nil, pos, "no valid JSON value at " .. loc (str, pos)
  end
end

local function optionalmetatables(...)
  if select("#", ...) > 0 then
    return ...
  else
    return {__jsontype = 'object'}, {__jsontype = 'array'}
  end
end

function json.decode (str, pos, nullval, ...)
  local objectmeta, arraymeta = optionalmetatables(...)
  return scanvalue (str, pos, nullval, objectmeta, arraymeta)
end

function json.use_lpeg ()
  local g = require ("lpeg")
  local pegmatch = g.match
  local P, S, R, V = g.P, g.S, g.R, g.V

  local function ErrorCall (str, pos, msg, state)
    if not state.msg then
      state.msg = msg .. " at " .. loc (str, pos)
      state.pos = pos
    end
    return false
  end

  local function Err (msg)
    return g.Cmt (g.Cc (msg) * g.Carg (2), ErrorCall)
  end

  local Space = (S" \n\r\t" + P"\239\187\191")^0

  local PlainChar = 1 - S"\"\\\n\r"
  local EscapeSequence = (P"\\" * g.C (S"\"\\/bfnrt" + Err "unsupported escape sequence")) / escapechars
  local HexDigit = R("09", "af", "AF")
  local function UTF16Surrogate (match, pos, high, low)
    high, low = tonumber (high, 16), tonumber (low, 16)
    if 0xD800 <= high and high <= 0xDBff and 0xDC00 <= low and low <= 0xDFFF then
      return true, unichar ((high - 0xD800)  * 0x400 + (low - 0xDC00) + 0x10000)
    else
      return false
    end
  end
  local function UTF16BMP (hex)
    return unichar (tonumber (hex, 16))
  end
  local U16Sequence = (P"\\u" * g.C (HexDigit * HexDigit * HexDigit * HexDigit))
  local UnicodeEscape = g.Cmt (U16Sequence * U16Sequence, UTF16Surrogate) + U16Sequence/UTF16BMP
  local Char = UnicodeEscape + EscapeSequence + PlainChar
  local String = P"\"" * g.Cs (Char ^ 0) * (P"\"" + Err "unterminated string")
  local Integer = P"-"^(-1) * (P"0" + (R"19" * R"09"^0))
  local Fractal = P"." * R"09"^0
  local Exponent = (S"eE") * (S"+-")^(-1) * R"09"^1
  local Number = (Integer * Fractal^(-1) * Exponent^(-1))/tonumber
  local Constant = P"true" * g.Cc (true) + P"false" * g.Cc (false) + P"null" * g.Carg (1)
  local SimpleValue = Number + String + Constant
  local ArrayContent, ObjectContent

  -- The functions parsearray and parseobject parse only a single value/pair
  -- at a time and store them directly to avoid hitting the LPeg limits.
  local function parsearray (str, pos, nullval, state)
    local obj, cont
    local npos
    local t, nt = {}, 0
    repeat
      obj, cont, npos = pegmatch (ArrayContent, str, pos, nullval, state)
      if not npos then break end
      pos = npos
      nt = nt + 1
      t[nt] = obj
    until cont == 'last'
    return pos, setmetatable (t, state.arraymeta)
  end

  local function parseobject (str, pos, nullval, state)
    local obj, key, cont
    local npos
    local t = {}
    repeat
      key, obj, cont, npos = pegmatch (ObjectContent, str, pos, nullval, state)
      if not npos then break end
      pos = npos
      t[key] = obj
    until cont == 'last'
    return pos, setmetatable (t, state.objectmeta)
  end

  local Array = P"[" * g.Cmt (g.Carg(1) * g.Carg(2), parsearray) * Space * (P"]" + Err "']' expected")
  local Object = P"{" * g.Cmt (g.Carg(1) * g.Carg(2), parseobject) * Space * (P"}" + Err "'}' expected")
  local Value = Space * (Array + Object + SimpleValue)
  local ExpectedValue = Value + Space * Err "value expected"
  ArrayContent = Value * Space * (P"," * g.Cc'cont' + g.Cc'last') * g.Cp()
  local Pair = g.Cg (Space * String * Space * (P":" + Err "colon expected") * ExpectedValue)
  ObjectContent = Pair * Space * (P"," * g.Cc'cont' + g.Cc'last') * g.Cp()
  local DecodeValue = ExpectedValue * g.Cp ()

  function json.decode (str, pos, nullval, ...)
    local state = {}
    state.objectmeta, state.arraymeta = optionalmetatables(...)
    local obj, retpos = pegmatch (DecodeValue, str, pos, nullval, state)
    if state.msg then
      return nil, state.pos, state.msg
    else
      return obj, retpos
    end
  end

  -- use this function only once:
  json.use_lpeg = function () return json end

  json.using_lpeg = true

  return json -- so you can get the module using json = require "dkjson".use_lpeg()
end

if always_try_using_lpeg then
  pcall (json.use_lpeg)
end

return json

-->

Main.lua

-- Photographs


displayMode(FULLSCREEN_NO_BUTTONS)
supportedOrientations(LANDSCAPE_ANY)

TOPVIEW = 0
ALBUM = 1
PHOTO = 2

-- Use this function to perform your initial setup
function setup()

    photoy = HEIGHT/5
    photox = photoy*3/2
    textOpacity = 0
    textOpacityClamped = 0
    maxOffset = 1000
    topOffset = 0
    albumOffset = 0
    view = View2D()
    albums = {}
    currentAlbum = nil
    currentPhoto = nil
    newPhoto = nil
    viewMode = TOPVIEW
    timer = 100
    
    downloadsThisFrame = 0
    
    
    globalTitle = "Juan Buhler"
    globalComment = "I'm a street photographer.\n\nOriginally from Argentina, in 1996 I moved to the United States to work in special effects. I have credits on computer animated feature films such as Brave, Toy Story 3, Wall-E and Ratatouille. Before that, I worked on Antz, Shrek, Shrek 2 and Madagascar.\n\nCurrently, I am driving a 1989 VW camper van down the Americas, from California to Tierra del Fuego. Check out vanenvan.com to read about that.\n\nMy website, jbuhler.com, has been online since 1999 or so, and my photoblog, Water Molotov, has had a new photo posted every day since early 2005.\n\nYou can contact me at juan@jbuhl\er.com.\n\ntap to go into a gallery / double tap to come back."


    waitChar = 144
    waitText = ""
    
    font("Futura-Medium")
    textMode(CORNER)
    spriteMode(CORNER)
    lineCapMode(SQUARE)

    loadLayout()

end

function loadLayout()

    --First add photoblog    
    local photoblogData = readLocalData("photoblog", "")
    if photoblogData ~= "" then
        rssLoaded(photoblogData, "foo", "bar")
    end

    http.request("http://photoblog.jbuhler.com/feed/?json", rssLoaded)
    
    --Then load rest of the layout
    data = readLocalData("layout", "")
    parseData(data, "foo", "bar")

    http.request('http://www.jbuhler.com/Codea/portfolio.txt', parseData)

end
    

-- This function gets called once every frame
function draw()
    
    downloadsThisFrame = 0
    
    waitChar = waitChar + .3
    if waitChar > 155.9 then waitChar = 145 end
    waitText = string.char(240,159,149,waitChar)
    
    -- This sets a dark background color 

    background(0, 0, 0, 255)
    if math.abs(view.offsetDelta) > .2 then
        textOpacity = textOpacity + 1500
    else
        textOpacity = textOpacity * .95
    end   
    textOpacityClamped = math.min(textOpacity, 255)


    view:draw()

    if view.tapCount == 2 then
        viewMode = viewMode - 1
        if viewMode < 0 then
            viewMode = 0
        end
        if viewMode == ALBUM then
            view.offset = albumOffset
        else
            view.offset = topOffset
        end
        view.maxOffset = 0
        view.tapCount = 0
        view.touch = nil
        view.framesSinceLastTouch = 0
        
    elseif view.tapCount == 1 and view.taptimer < 0 then
        if viewMode == ALBUM then
            albumOffset = view.offset
            currentAlbum:touched(touch)
            view.offset = 0
            textOpacity = 100000
        elseif viewMode == TOPVIEW then

            tx = view.touch.x+view.offset
            ty = view.touch.y
            topOffset = view.offset
            textOpacity = 100000
            for _, album in pairs(albums) do
                if tx > album.minx and tx < album.maxx and ty > album.miny and ty < album.maxy then
                    
                    if album ~= currentAlbum then
                        for _, photo in pairs(currentAlbum.photos) do
                            photo.photo = ""
                            photo.downloaded = 0
                        end
                        collectgarbage()
                    end
                    currentAlbum = album
                    currentPhoto = album.photos[1]
                    viewMode = ALBUM
                    break
                end

            end

            
            view.offset = 0

        elseif viewMode == PHOTO then
            viewMode = ALBUM
            view.offset = albumOffset
        end
        
        view.maxOffset = view.offset

        view.tapCount = 0
        view.touch = nil

        view.framesSinceLastTouch = 0
        collectgarbage()
        return

    end
     
    if viewMode == TOPVIEW then
        for _, album in pairs(albums) do
            album:draw()
        end
            pushMatrix()
            translate(0,0,5)
            fill(92, 92, 92, 255)
            strokeWidth(0)
            rect(0,0,500,HEIGHT)
            fill(255, 255, 255, 255)
            fontSize(32)
            textAlign(LEFT)
            text(globalTitle, 20, HEIGHT/2+100)
            textWrapWidth(460)
            fontSize(15)
            sx,sy = textSize(globalComment)
            text(globalComment, 20, HEIGHT/2+90-sy)
            textWrapWidth(0)
            popMatrix()
            
    elseif viewMode >= ALBUM then
        if currentAlbum ~= nil then
            currentAlbum:draw()
        end
    end
    if viewMode == PHOTO then
        if currentPhoto ~= nil then
            currentPhoto:draw()
        end
    end
    --[[
    waiting = true
    if waiting then
        waitingAngle = waitingAngle + 5
        pushMatrix()
        translate(view.offset+WIDTH/2, HEIGHT/2)
        rotate(waitingAngle)
        sprite("Space Art:Eclipse", 0, 0, 200)
        popMatrix()
    end
    ]]--
    --pushMatrix()

    --fill(255, 255, 255, 255)
    --fontSize(20)
    --text(math.floor(10/DeltaTime)/10, view.offset + 5,HEIGHT-30)
    --text(view.maxOffset, view.offset + 100, HEIGHT-30)
    --text(view.framesSinceLastTouch, view.offset + 100, HEIGHT-30)
    --popMatrix()

    if newPhoto ~= nil then
        currentPhoto = newPhoto
        newPhoto = nil
    end
    
end

function touched(touch)

    view:touched(touch)

end

Photo.lua

Photo = class()

function Photo:init(x)
    -- you can accept and set parameters here
    self.title = ""
    self.photo = ""
    self.prev = nil
    self.next = nil
    self.url = ""
    self.filename = ""
    self.downloaded = 0
    self.x = 0
    self.y = 0
    self.size = 1
    
    self.displayX = 0
    self.displayY = 0
    self.displaySize = 1

    self.opacity = 1
    self.minx = 0
    self.maxx = 0
    self.miny = 0
    self.maxy = 0
    self.maxOffset = 100
    
    self.sizeincrement = 0
    self.whenToZoom = math.random(100, 3000)
end

function Photo:download()
    if self.downloaded == 0 then
        self.downloaded = 1
        downloadsThisFrame = downloadsThisFrame + 1
        downloadTimer = 0
        local theImage = readImage("Documents:" .. self.filename)

        --local theImage = readImage("Cargo Bot:Background Fade")

        if theImage == nil then 
            print("downloading "..self.filename)
            http.request(self.url, function(theImage, status, head)
                if type(theImage) == "userdata" then
                    self.photo = theImage
                    saveImage("Documents:" .. self.filename, theImage)
                    print("saved " .. self.filename)
                else
                    print("image " .. self.filename .. " not found.")
                    
                end
                end)
        else

            self.photo = theImage
        end
    end
end    
function Photo:draw()

    if downloadsThisFrame < 1 then
        self:download()
    end
        
    if viewMode == ALBUM and self.minx < WIDTH+view.offset and self.maxx > view.offset then
        if view.framesSinceLastTouch > self.whenToZoom then
            self.sizeincrement = math.min(self.sizeincrement + .1, 100)
        else
            self.sizeincrement = 0
        end

        self.displayX = self.x-self.sizeincrement/2
        self.displayY = self.y-self.sizeincrement/2
        self.displaySize = self.size + self.sizeincrement
        
        pushMatrix()        

        clip(self.x-view.offset,self.y,self.size,self.size*2/3)
        
        if self.photo == "" then
            pushMatrix()
            translate(self.size/2-15,self.size/3-15,5)

            fill(127, 127, 127, 255)
            font("AppleColorEmoji")
            fontSize(30)
            text(waitText, self.x, self.y)
            font("Futura-Medium")
            popMatrix()
        end
        sprite(self.photo, self.displayX, self.displayY, self.displaySize) 
        clip()

        stroke(0, 0, 0, 255)
        translate(0,0,1)
        strokeWidth(5)
        line(self.minx-2,self.miny,self.maxx+2,self.miny)
        line(self.minx-2,self.maxy,self.maxx+2,self.maxy)
        line(self.minx,self.miny-2,self.minx,self.maxy+2)
        line(self.maxx,self.miny-2,self.maxx,self.maxy+2)

        if view.maxOffset < self.x+self.size-WIDTH then
            view.maxOffset = self.x+self.size-WIDTH
        end
        popMatrix()

        fontSize(10)

        pushMatrix()
        fill(0, 0, 0, textOpacityClamped)
        translate(5, 2, 2)
        text(self.title, self.x, self.y)
        translate(-1, 1, 2)
        fill(255, 255, 255, textOpacityClamped)
        text(self.title, self.x, self.y)
        popMatrix()
    elseif viewMode == PHOTO then
        local p = self.photo

        pushMatrix()
        fill(53, 53, 53, textOpacityClamped)
        translate(5, 2, 2)
        fontSize(20)
        textAlign(RIGHT)
        text(self.title, 45, HEIGHT/2 - WIDTH/3 - 10)

        translate(-1, 2, 2)
        fill(200,200,200, textOpacityClamped)
        text(self.title, 45, HEIGHT/2 - WIDTH/3 - 10)
        popMatrix()
        
        if self.next ~= nil then
            if view.offset > 75 and view.scrollTimer > 50 then
                newPhoto = self.next
                view.offset = 70-WIDTH
                view.scrollTimer = 0
            end
            sprite(self.next.photo, WIDTH+10, HEIGHT/2 - WIDTH/3 + 30, WIDTH-90)

        end
        if self.prev ~= nil then
            if view.offset < -75 and view.scrollTimer > 50 then 
                view.offset = WIDTH-70
                newPhoto = self.prev
                view.scrollTimer = 0
            end
            sprite(self.prev.photo, 80-WIDTH, HEIGHT/2 - WIDTH/3 + 30, WIDTH-90)

        end
        sprite(p, 45, HEIGHT/2 - WIDTH/3 + 30, WIDTH-90)

    end
end

function Photo:touched(touch)

end

Photoblog.lua

 


function rssLoaded(data, status, headers)
    
    album = "Water Molotov" 
    
    if albums[album] ~= nil then
        olddata = readLocalData("photoblog", "")
        if data == olddata then
            return
        end
        albums[album] = nil
        collectgarbage()
    end


    saveLocalData("photoblog", data)


    albums[album] = Album()

    albums[album].title = album
    albums[album].x = photox*0 + 500
    albums[album].y = photoy*0
    albums[album].size = photox*2
    albums[album].displaySize = photox*2
    albums[album].iconindex = 1
    albums[album].comment = "Water Molotov is my photoblog.\nIt's a silly name. I've been posting one photo per day since early 2005. These are the last twenty."
    albums[album].minx = albums[album].x
    albums[album].miny = albums[album].y
    albums[album].maxx = albums[album].x + albums[album].size
    albums[album].maxy = albums[album].y + albums[album].size*2/3
    
    layout = {{0,2,3},{0,0,2},{2,0,2},{3,3,2},{3,2,1},{4,0,3},{5,3,2},{7,3,2},{7,2,1},{8,2,1},{7,0,2},{9,4,1},{10,4,1},{9,2,2},{9,0,2},{11,0,1},{12,0,1},{11,1,2},{11,3,2},{13,0,2}}
    
    obj, pos, err = json.decode(data)

    xpos = 0
    ypos = 0
    sizefactor = 1.
    pn = 1
    for j = 1, #obj do  

        -- Extract filename from content string
        i=0

        s = obj[j].content
        st1,en1 = string.find(s, "title")
        if st1 ~= nil then
        s2 = string.sub(s,en1+8)

        st2 = string.find(s2, ";")
        if st2 ~= nil then
        s3 = string.sub(s2, 1, st2-6)


        
        p = Photo()
        p.url = "http://photoblog.jbuhler.com/wp-content/uploads/" .. s3 .. ".jpg"
        p.filename = s3

        p.title = obj[j].title
        
        p.x = layout[pn][1]*photox + 300
        p.y = layout[pn][2]*photoy
        p.size = layout[pn][3]*photox
        p.displaySize = p.size
                
        p.minx = p.x
        p.miny = p.y
        p.maxx = p.x + p.size
        p.maxy = p.y + p.size*2/3
        
        if p.url ~= "" then
            table.insert(albums[album].photos, p)
            
            pn = pn + 1
        
            ypos = ypos + 1
            if ypos > 4 then
                ypos = 0
                xpos = xpos + 1
            end
        end
        end
        end

    end
    ss = json.encode(albums[album])

    for i = 1, #albums[album].photos do
        if i > 1 then
            albums[album].photos[i].prev = albums[album].photos[i-1]
        end
        if i < #albums[album].photos then
            albums[album].photos[i].next = albums[album].photos[i+1]
        end
    end

end

View2D.lua

View2D = class()

function View2D:init()
    self.offset = 300
    self.maxOffset = 0
    self.offsetDelta = 0
    self.offsetDeltaHard = 0
    self.oldOffset = 0
    self.touch = nil
    self.moving = false
    self.timer = 60
    self.taptimer = 10
    self.scrollTimer = 0

    self.started = false
    self.started2 = false
    self.tapCount = 0
    self.minx = 0
    self.maxx = WIDTH
    self.miny = 0
    self.maxy = HEIGHT
        
    self.framesSinceLastTouch = 0
    
end

function View2D:draw()
    
    self:processTouches()
    
    self.timer = self.timer - 1
    self.taptimer = self.taptimer - 1
    self.framesSinceLastTouch = self.framesSinceLastTouch + 1
    self.scrollTimer = self.scrollTimer + 1
    

    --if not self.moving then
    self.offset = self.offset - self.offsetDelta
    if self.offset < 0 then 
        self.offset = self.offset / 1.1
        self.offsetDelta = 0
    elseif self.offset > self.maxOffset then        
        self.offset = self.maxOffset + (self.offset-self.maxOffset)/1.1
        self.offsetDelta = 0
    elseif viewMode == ALBUM and self.offset>150 and self.offset<350 then
        self.offset = 300 + (self.offset-300)/1.05
    elseif viewMode == TOPVIEW and self.offset>250 and self.offset<550 then
        self.offset = 500 + (self.offset-500)/1.05
    end
    --else
    --if self.offset < 0 or self.offset > self.maxOffset then
    --    self.offsetDelta = self.offsetDelta / 2
    --self.offset = self.offset - self.offsetDelta
    --end
    --end
    
    ortho(self.offset, WIDTH+self.offset, 0, HEIGHT, -10, 10)
    
    if not self.moving then
        self.offsetDelta = self.offsetDelta * .9
    end
end

function View2D:touched(touch)


    if CurrentTouch.state == ENDED and self.timer < 0 then

        self.touch = touch
        self.taptimer = 30

    else
        if CurrentTouch.state == MOVING then
            self.moving = true

            self.offsetDelta = CurrentTouch.deltaX
            self.offsetDeltaHard = CurrentTouch.deltaX
            self.timer = 30
        else
            self.moving = false
        end
    end

end

function View2D:processTouches()
    if self.touch ~= nil then
        self.tapCount = self.touch.tapCount

    end
end