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