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