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