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
 121                         @img.set_color(255, 255, 255, 0)
 122                         @label.set_color(255, 255, 255, 0)
 123                         @label.set_color(255, 0, 0, 0)
 124
 125                         @img.set_file(ICON_FILE)
 126                         @img.set_fill(0, 0, *@img.get_size)
 127
 128                         @label.text = label
 129                         @label.set_font("VeraBd", 10)
 130
 131                         resize(*@img.get_size)
 132                 end
 133
 134                 def label
 135                         @label.text
 136                 end
 137
 138                 # smart callbacks
 139                 def on_show
 140                         @objects.each { |o| o.show }
 141
 142                         @alpha_anim ||= AlphaAnimator.new(2, @img, @label)
 143                         @alpha_anim.on_finished { @alpha_anim = nil }
 144                 end
 145
 146                 def on_hide
 147                         @objects.each { |o| o.hide }
 148
 149                         @alpha_anim && @alpha_anim.delete
 150                         @alpha_anim = nil
 151                 end
 152
 153                 def on_delete
 154                         @objects.each { |o| o.delete }
 155                         @objects.clear
 156
 157                         @alpha_anim && @alpha_anim.delete
 158
 159                         @img = @label = @alpha_anim = nil
 160                 end
 161
 162                 def on_move(x, y)
 163                         @objects.each { |o| o.move(x, y) }
 164
 165                         @label.center(self)
 166                 end
 167
 168                 def on_resize(w, h)
 169                         @img.resize(w, h)
 170                 end
 171         end
 172
 173         class FixedSizeArray < Array
 174                 def initialize(siz)
 175                         super
 176                 end
 177
 178                 def each
 179                         super { |item| yield item unless item.nil? }
 180                 end
 181
 182                 def delete_at(i)
 183                         self[i] = nil
 184                 end
 185
 186                 undef :push
 187                 undef :<<
 188                 undef :unshift
 189
 190                 undef :pop
 191                 undef :shift
 192                 undef :delete
 193         end
 194
 195         class Container < Evas::Smart
 196                 class ContainerError < StandardError; end
 197                 class ContainerFullError < ContainerError; end
 198                 class ContainerLockedError < ContainerError; end
 199
 200                 include Enumerable
 201
 202                 def initialize(evas)
 203                         super
 204
 205                         @bg = Evas::Rectangle.new(evas)
 206                         @bg.set_color(0, 0, 0, 255)
 207
 208                         @icons = FixedSizeArray.new(MAX_ICONS)
 209                         @about_to_add = []
 210                         @animators = []
 211
 212                         @lock_count = 0
 213                 end
 214
 215                 def each
 216                         @icons.each { |i| yield i unless i.nil? }
 217                 end
 218
 219                 def <<(i)
 220                         Kernel.raise(ContainerFullError) if slots_left.zero?
 221                         Kernel.raise(ContainerLockedError) if @lock_count > 0
 222
 223                         i.move_relative(self, 0, 0)
 224                         i.slot = next_slot
 225                         i.clip = self
 226                         i.show
 227
 228                         # check whether we need to need to move this icon
 229                         if slots_left == 1
 230                                 @icons[i.slot] = i
 231                                 return
 232                         end
 233
 234                         movement = Main.instance.icon_height * (slots_left - 1)
 235
 236                         @about_to_add << i
 237
 238                         move_time = 0.25 * slots_left
 239                         @animators << MoveAnimator.new(move_time, movement, i)
 240
 241                         @animators.last.on_finished do |ani|
 242                                 @animators.delete(ani)
 243                                 @icons[i.slot] = i
 244
 245                                 # FIXME check whether we can always shift the array instead
 246                                 #puts "really added #{i.label} now (slot #{i.slot})"
 247                                 @about_to_add.delete(i)
 248                         end
 249                 end
 250
 251                 def delete(icon)
 252                         # icons that are placed above the one that's deleted need
 253                         # to be moved
 254                         i = @icons.index(icon)
 255                         return (block_given? ? yield : nil) if i.nil?
 256
 257                         delete_at(i)
 258                 end
 259
 260                 def delete_at(i)
 261                         @icons[i].delete
 262                         @icons.delete_at(i)
 263
 264                         ar = @icons[i..-1].reject { |i| i.nil? }
 265                         return if ar.nil?
 266
 267                         @lock_count += 1
 268
 269                         @animators << MoveAnimator.new(2, Main.instance.icon_height, *ar)
 270                         @animators.last.on_finished do |ani|
 271                                 @animators.delete(ani)
 272                                 @lock_count -= 1
 273                         end
 274                 end
 275
 276                 def length
 277                         @icons.nitems
 278                 end
 279
 280                 # smart callbacks
 281                 def on_show
 282                         @bg.show
 283                 end
 284
 285                 def on_hide
 286                         @bg.hide
 287                 end
 288
 289                 def on_delete
 290                         @bg.delete
 291                         @bg = nil
 292                 end
 293
 294                 def on_move(x, y)
 295                         @bg.move(x, y)
 296                 end
 297
 298                 def on_resize(w, h)
 299                         @bg.resize(w, h)
 300                 end
 301
 302                 private
 303                 def slots_left
 304                         MAX_ICONS - @icons.nitems - @about_to_add.length
 305                 end
 306
 307                 def next_slot
 308                         @icons.nitems + @about_to_add.length
 309                 end
 310         end
 311
 312         class Main < Ecore::Evas::SoftwareX11
 313                 include Singleton
 314
 315                 attr_reader :container
 316
 317                 def initialize
 318                         super
 319
 320                         self.title = "blah"
 321                         self.borderless = true
 322
 323                         @icon_dim = IO.read(ICON_FILE, 8, 16).unpack("NN")
 324
 325                         self.on_resize { @container.resize(*geometry[2, 3]) }
 326
 327                         @container = Container.new(evas)
 328                         @container.move(0, 0)
 329                         @container.layer = -1
 330                         @container.show
 331
 332                         size = [@icon_dim.first, icon_height * MAX_ICONS]
 333                         resize(*size)
 334                         set_size_min(*size)
 335                         set_size_max(*size)
 336
 337                         evas.font_path_append("/usr/lib/X11/fonts/TTF")
 338
 339                         @handlers = [
 340                                 Ecore::EventHandler.new(IMAP::MailboxStatusEvent,
 341                                                         &method(:on_mailbox_status)),
 342                                 Ecore::EventHandler.new(IMAP::FinishedEvent,
 343                                                         &method(:on_finished))
 344                         ]
 345
 346                         s = File.expand_path("~/.e/apps/embrace/config.yaml")
 347                         @config = YAML.load(File.read(s))
 348
 349                         @server = nil
 350                         @timer = Ecore::Timer.new(30, &method(:on_timer))
 351                         on_timer
 352                 end
 353
 354                 def icon_height
 355                         @icon_dim.last
 356                 end
 357
 358                 def run
 359                         Ecore.main_loop_begin
 360                 end
 361
 362                 private
 363                 def add_icon(name)
 364                         @container << MailboxIcon.new(evas, name)
 365                 end
 366
 367                 def on_timer
 368                         return unless @server.nil?
 369
 370                         @server = IMAP::Session.new(@config)
 371
 372                         true
 373                 end
 374
 375                 def on_mailbox_status(ev)
 376                         md = ev.name.match(/^Lists.(.+)$/)
 377                         if md.nil?
 378                                 lbl = ev.name
 379                         else
 380                                 lbl = md.captures.first
 381                         end
 382
 383                         found = @container.find { |i| i.label == lbl }
 384
 385                         begin
 386                                 if ev.count.zero?
 387                                         unless found.nil?
 388                                                 #puts "removing icon #{lbl}"
 389                                                 @container.delete(found)
 390                                         else
 391                                                 #puts "count == 0, but icon not found (#{lbl})"
 392                                         end
 393                                 elsif found.nil?
 394                                         #puts "adding icon #{lbl}"
 395                                         add_icon(lbl)
 396                                 else
 397                                         #puts "count > 0, but already there (#{lbl})"
 398                                 end
 399                         rescue Exception => e
 400                                 puts e.message
 401                         end
 402
 403                         false
 404                 end
 405
 406                 def on_finished(ev)
 407                         @server = nil
 408                 end
 409         end
 410 end
 411
 412 Embrace::Main.instance.show
 413 Embrace::Main.instance.run