bin/embrace

   1 #!/usr/bin/env ruby
   2
   3 # vim:syn=ruby
   4 #
   5 # Copyright (c) 2006 Tilman Sauerbeck (tilman at code-monkey de)
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of version 2 of the GNU General Public License as
   9 # published by the Free Software Foundation.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software Foundation,
  18 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19
  20 require "ecore"
  21 require "ecore_x"
  22 require "ecore_evas"
  23 require "singleton"
  24 require "yaml"
  25 require "embrace/imap"
  26
  27 PKG_NAME = "embrace"
  28 DATADIR = "/usr/local/share/#{PKG_NAME}/"
  29
  30 module Embrace
  31         VERSION = "0.0.1"
  32         ICON_FILE = DATADIR + "l33t_MAI_envelope.png"
  33
  34         class ZeroToOneAnimator < Ecore::Animator
  35                 def initialize(duration)
  36                         @finished = nil
  37
  38                         started = Time.now
  39
  40                         super() do
  41                                 v = [(Time.now - started) / duration, 1.0].min
  42
  43                                 yield v
  44
  45                                 @finished.call(self) unless (v < 1.0) || @finished.nil?
  46                                 v < 1.0
  47                         end
  48                 end
  49
  50                 def delete
  51                         super
  52
  53                         @finished = nil
  54                 end
  55
  56                 def on_finished(&block)
  57                         @finished = block
  58                 end
  59         end
  60
  61         # an animator that runs for the specified number of seconds,
  62         # and yields values between 0 and 255
  63         class AlphaAnimator < ZeroToOneAnimator
  64                 def initialize(duration, object)
  65                         super(duration) do |v|
  66                                 a = compute_alpha(v)
  67                                 object.set_color(a, a, a, a)
  68                         end
  69                 end
  70
  71                 def compute_alpha(v)
  72                         (255 * v).to_i
  73                 end
  74         end
  75
  76         class InverseAlphaAnimator < AlphaAnimator
  77                 def compute_alpha(v)
  78                         super((1.0 - v).abs)
  79                 end
  80         end
  81
  82         class MoveAnimator < ZeroToOneAnimator
  83                 def initialize(duration, movement, *objects)
  84                         zipped = objects.zip(objects.map { |o| o.geometry[0..1] })
  85
  86                         super(duration) do |v|
  87                                 # decelerate
  88                                 v = Math.sin(v * Math::PI / 2.0)
  89
  90                                 zipped.each do |(o, orig_pos)|
  91                                         o.move(orig_pos.first,
  92                                                orig_pos.last + (movement * v).to_i)
  93                                 end
  94                         end
  95                 end
  96         end
  97
  98         class MailboxIcon < Evas::Smart
  99                 class FadeOutFinishedEvent < Ecore::Event
 100                         attr_reader :icon
 101
 102                         def initialize(icon)
 103                                 super()
 104
 105                                 @icon = icon
 106                         end
 107                 end
 108
 109                 attr_accessor :slot
 110
 111                 def initialize(evas, label)
 112                         super(evas)
 113
 114                         self.name = label
 115
 116                         @slot = nil
 117                         @alpha_anim = nil
 118
 119                         @img = Evas::Image.new(evas)
 120                         @label = Evas::Text.new(evas)
 121
 122                         @objects = [@img, @label]
 123                         @objects.each { |o| add_member(o) }
 124
 125                         set_color(0, 0, 0, 0)
 126
 127                         @img.set_file(ICON_FILE)
 128                         @img.set_fill(0, 0, *@img.get_size)
 129
 130                         @label.text = name
 131                         @label.set_font("VeraBd", 10)
 132
 133                         a = @label.geometry
 134                         b = *@img.get_size
 135
 136                         @label_offset_x = (b[0] / 2) - (a[2] / 2)
 137                         @label_offset_y = (b[1] / 2) - (a[3] / 2)
 138
 139                         resize(*@img.get_size)
 140                 end
 141
 142                 def fade_in
 143                         show
 144
 145                         @alpha_anim ||= AlphaAnimator.new(2, self)
 146                         @alpha_anim.on_finished { @alpha_anim = nil }
 147                 end
 148
 149                 def fade_out
 150                         @alpha_anim ||= InverseAlphaAnimator.new(2, self)
 151                         @alpha_anim.on_finished do
 152                                 @alpha_anim = nil
 153                                 FadeOutFinishedEvent.raise(self)
 154                         end
 155                 end
 156
 157                 # smart callbacks
 158                 def smart_show
 159                         @objects.each { |o| o.show }
 160                 end
 161
 162                 def smart_hide
 163                         @objects.each { |o| o.hide }
 164
 165                         @alpha_anim && @alpha_anim.delete
 166                         @alpha_anim = nil
 167                 end
 168
 169                 def smart_delete
 170                         @objects.each { |o| o.delete }
 171                         @objects.clear
 172
 173                         @alpha_anim && @alpha_anim.delete
 174
 175                         @img = @label = @alpha_anim = nil
 176                 end
 177
 178                 def smart_move(x, y)
 179                         @img.move(x, y)
 180
 181                         # center the label on the image
 182                         @label.move(x + @label_offset_x,
 183                                     y + @label_offset_y)
 184                 end
 185
 186                 def smart_resize(w, h)
 187                         @img.resize(w, h)
 188                 end
 189
 190                 def smart_color_set(r, g, b, a)
 191                         @img.set_color(r, g, b, a)
 192                         @label.set_color(r, 0, 0, a)
 193                 end
 194         end
 195
 196         class Container < Evas::Smart
 197                 class ContainerError < StandardError; end
 198                 class ContainerFullError < ContainerError; end
 199                 class ContainerLockedError < ContainerError; end
 200
 201                 def initialize(evas)
 202                         super
 203
 204                         @bg = Evas::Rectangle.new(evas)
 205                         @bg.set_color(0, 0, 0, 8)
 206
 207                         add_member(@bg)
 208
 209                         @icons = []
 210                         @animators = []
 211
 212                         @about_to_add = 0
 213                         @add_lock_count = 0
 214
 215                         @handlers = [
 216                                 Ecore::EventHandler.new(MailboxIcon::FadeOutFinishedEvent,
 217                                                         &method(:on_icon_fade_out_finished))
 218                         ]
 219                 end
 220
 221                 def can_add?
 222                         !slots_left.zero? && @add_lock_count.zero?
 223                 end
 224
 225                 def can_delete?
 226                         @about_to_add.zero? && @add_lock_count.zero?
 227                 end
 228
 229                 def <<(i)
 230                         Kernel.raise(ContainerFullError) if slots_left.zero?
 231                         Kernel.raise(ContainerLockedError) unless @add_lock_count.zero?
 232
 233                         geo = geometry
 234
 235                         i.move(geo[0],
 236                                geo[1] + geo[3] % Main.instance.icon_height)
 237
 238                         i.slot = next_slot
 239                         i.clip = self
 240                         i.fade_in
 241
 242                         # check whether we need to need to move this icon
 243                         if slots_left == 1
 244                                 @icons[i.slot] = i
 245                                 return
 246                         end
 247
 248                         movement = Main.instance.icon_height * (slots_left - 1)
 249
 250                         @about_to_add += 1
 251
 252                         move_time = 0.25 * slots_left
 253                         @animators << MoveAnimator.new(move_time, movement, i)
 254
 255                         @animators.last.on_finished do |ani|
 256                                 @animators.delete(ani)
 257                                 @icons[i.slot] = i
 258
 259                                 @about_to_add -= 1
 260                         end
 261                 end
 262
 263                 def delete(icon)
 264                         i = @icons.index(icon)
 265                         return (block_given? ? yield : nil) if i.nil?
 266
 267                         delete_at(i)
 268                 end
 269
 270                 def delete_at(i)
 271                         Kernel.raise(ContainerLockedError) unless @about_to_add.zero?
 272                         Kernel.raise(ContainerLockedError) unless @add_lock_count.zero?
 273
 274                         @add_lock_count += 1
 275                         @icons[i].fade_out
 276                 end
 277
 278                 def on_icon_fade_out_finished(ev)
 279                         i = @icons.index(ev.icon)
 280                         ev.icon.delete
 281                         @icons.delete_at(i)
 282
 283                         # icons that are placed above the one that's deleted need
 284                         # to be moved. check whether are there any first
 285                         if i == @icons.length
 286                                 @add_lock_count -= 1
 287                                 return
 288                         end
 289
 290                         ar = @icons[i..-1]
 291
 292                         @animators << MoveAnimator.new(2, Main.instance.icon_height, *ar)
 293                         @animators.last.on_finished do |ani|
 294                                 @animators.delete(ani)
 295                                 @add_lock_count -= 1
 296                         end
 297                 end
 298
 299                 # smart callbacks
 300                 def smart_show
 301                         @bg.show
 302                 end
 303
 304                 def smart_hide
 305                         @bg.hide
 306                 end
 307
 308                 def smart_delete
 309                         @bg.delete
 310                         @bg = nil
 311                 end
 312
 313                 def smart_move(x, y)
 314                         @bg.move(x, y)
 315                 end
 316
 317                 def smart_resize(w, h)
 318                         @bg.resize(w, h)
 319                 end
 320
 321                 private
 322                 def max_icons
 323                         geometry.pop / Main.instance.icon_height
 324                 end
 325
 326                 def slots_left
 327                         max_icons - @icons.nitems - @about_to_add
 328                 end
 329
 330                 def next_slot
 331                         @icons.nitems + @about_to_add
 332                 end
 333         end
 334
 335         class Main < Ecore::Evas::SoftwareX11
 336                 include Singleton
 337
 338                 attr_reader :container
 339
 340                 def initialize
 341                         super
 342
 343                         self.has_alpha = true
 344                         self.title = "Embrace"
 345                         self.borderless = true
 346
 347                         @icon_dim = IO.read(ICON_FILE, 8, 16).unpack("NN")
 348
 349                         on_resize { @container.resize(*geometry[2, 3]) }
 350
 351                         @container = Container.new(evas)
 352                         @container.move(0, 0)
 353                         @container.layer = -1
 354                         @container.show
 355
 356                         size = [@icon_dim.first]
 357
 358                         arg = ARGV.shift
 359                         if arg.nil?
 360                                 size << icon_height * 11
 361                         else
 362                                 size << arg.to_i
 363                         end
 364
 365                         resize(*size)
 366                         set_size_min(*size)
 367                         set_size_max(*size)
 368
 369                         evas.font_path_append("/usr/lib/X11/fonts/TTF")
 370
 371                         @handlers = [
 372                                 Ecore::EventHandler.new(IMAP::MailboxStatusEvent,
 373                                                         &method(:on_mailbox_status)),
 374                                 Ecore::EventHandler.new(IMAP::FinishedEvent,
 375                                                         &method(:on_finished))
 376                         ]
 377
 378                         s = File.expand_path("~/.e/apps/embrace/config.yaml")
 379                         @config = YAML.load(File.read(s))
 380
 381                         @server = nil
 382                         @timer = Ecore::Timer.new(30, &method(:on_timer))
 383                         on_timer
 384                 end
 385
 386                 def icon_height
 387                         @icon_dim.last
 388                 end
 389
 390                 def run
 391                         Ecore.main_loop_begin
 392                 end
 393
 394                 private
 395                 def on_timer
 396                         return unless @server.nil?
 397
 398                         @server = IMAP::Session.new(@config)
 399
 400                         true
 401                 end
 402
 403                 def on_mailbox_status(ev)
 404                         md = ev.name.match(/^Lists.(.+)$/)
 405                         if md.nil?
 406                                 lbl = ev.name
 407                         else
 408                                 lbl = md.captures.first
 409                         end
 410
 411                         found = evas.find_object(lbl)
 412
 413                         if ev.count.zero? && !found.nil? && @container.can_delete?
 414                                 @container.delete(found)
 415                         elsif !ev.count.zero? && found.nil? && @container.can_add?
 416                                 @container << MailboxIcon.new(evas, lbl)
 417                         end
 418
 419                         false
 420                 end
 421
 422                 def on_finished(ev)
 423                         @server = nil
 424                 end
 425         end
 426 end
 427
 428 Embrace::Main.instance.show
 429 Embrace::Main.instance.run