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                         self.name = label
 114
 115                         @slot = nil
 116                         @alpha_anim = nil
 117
 118                         @img = Evas::Image.new(evas)
 119                         @label = Evas::Text.new(evas)
 120
 121                         @objects = [@img, @label]
 122                         @objects.each { |o| add_member(o) }
 123
 124                         @img.set_color(255, 255, 255, 0)
 125                         @label.set_color(255, 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                         resize(*@img.get_size)
 134                 end
 135
 136                 # smart callbacks
 137                 def smart_show
 138                         @objects.each { |o| o.show }
 139
 140                         @alpha_anim ||= AlphaAnimator.new(2, @img, @label)
 141                         @alpha_anim.on_finished { @alpha_anim = nil }
 142                 end
 143
 144                 def smart_hide
 145                         @objects.each { |o| o.hide }
 146
 147                         @alpha_anim && @alpha_anim.delete
 148                         @alpha_anim = nil
 149                 end
 150
 151                 def smart_delete
 152                         @objects.each { |o| o.delete }
 153                         @objects.clear
 154
 155                         @alpha_anim && @alpha_anim.delete
 156
 157                         @img = @label = @alpha_anim = nil
 158                 end
 159
 160                 def smart_move(x, y)
 161                         @objects.each { |o| o.move(x, y) }
 162
 163                         @label.center(self)
 164                 end
 165
 166                 def smart_resize(w, h)
 167                         @img.resize(w, h)
 168                 end
 169         end
 170
 171         class Container < Evas::Smart
 172                 class ContainerError < StandardError; end
 173                 class ContainerFullError < ContainerError; end
 174                 class ContainerLockedError < ContainerError; end
 175
 176                 def initialize(evas)
 177                         super
 178
 179                         @bg = Evas::Rectangle.new(evas)
 180                         @bg.set_color(0, 0, 0, 8)
 181
 182                         add_member(@bg)
 183
 184                         @icons = []
 185                         @animators = []
 186
 187                         @about_to_add = 0
 188                         @add_lock_count = 0
 189                 end
 190
 191                 def can_add?
 192                         !slots_left.zero? && @add_lock_count.zero?
 193                 end
 194
 195                 def can_delete?
 196                         @about_to_add.zero? && @add_lock_count.zero?
 197                 end
 198
 199                 def <<(i)
 200                         Kernel.raise(ContainerFullError) if slots_left.zero?
 201                         Kernel.raise(ContainerLockedError) unless @add_lock_count.zero?
 202
 203                         i.move_relative(self, 0, 0)
 204                         i.slot = next_slot
 205                         i.clip = self
 206                         i.show
 207
 208                         # check whether we need to need to move this icon
 209                         if slots_left == 1
 210                                 @icons[i.slot] = i
 211                                 return
 212                         end
 213
 214                         movement = Main.instance.icon_height * (slots_left - 1)
 215
 216                         @about_to_add += 1
 217
 218                         move_time = 0.25 * slots_left
 219                         @animators << MoveAnimator.new(move_time, movement, i)
 220
 221                         @animators.last.on_finished do |ani|
 222                                 @animators.delete(ani)
 223                                 @icons[i.slot] = i
 224
 225                                 @about_to_add -= 1
 226                         end
 227                 end
 228
 229                 def delete(icon)
 230                         i = @icons.index(icon)
 231                         return (block_given? ? yield : nil) if i.nil?
 232
 233                         delete_at(i)
 234                 end
 235
 236                 def delete_at(i)
 237                         Kernel.raise(ContainerLockedError) unless @about_to_add.zero?
 238                         Kernel.raise(ContainerLockedError) unless @add_lock_count.zero?
 239
 240                         # icons that are placed above the one that's deleted need
 241                         # to be moved
 242                         ar = @icons[(i + 1)..-1]
 243
 244                         @icons[i].delete
 245                         @icons.delete_at(i)
 246
 247                         return if ar.empty?
 248
 249                         @add_lock_count += 1
 250
 251                         @animators << MoveAnimator.new(2, Main.instance.icon_height, *ar)
 252                         @animators.last.on_finished do |ani|
 253                                 @animators.delete(ani)
 254                                 @add_lock_count -= 1
 255                         end
 256                 end
 257
 258                 # smart callbacks
 259                 def smart_show
 260                         @bg.show
 261                 end
 262
 263                 def smart_hide
 264                         @bg.hide
 265                 end
 266
 267                 def smart_delete
 268                         @bg.delete
 269                         @bg = nil
 270                 end
 271
 272                 def smart_move(x, y)
 273                         @bg.move(x, y)
 274                 end
 275
 276                 def smart_resize(w, h)
 277                         @bg.resize(w, h)
 278                 end
 279
 280                 private
 281                 def slots_left
 282                         MAX_ICONS - @icons.nitems - @about_to_add
 283                 end
 284
 285                 def next_slot
 286                         @icons.nitems + @about_to_add
 287                 end
 288         end
 289
 290         class Main < Ecore::Evas::SoftwareX11
 291                 include Singleton
 292
 293                 attr_reader :container
 294
 295                 def initialize
 296                         super
 297
 298                         self.has_alpha = true
 299                         self.title = "Embrace"
 300                         self.borderless = true
 301
 302                         @icon_dim = IO.read(ICON_FILE, 8, 16).unpack("NN")
 303
 304                         on_resize { @container.resize(*geometry[2, 3]) }
 305
 306                         @container = Container.new(evas)
 307                         @container.move(0, 0)
 308                         @container.layer = -1
 309                         @container.show
 310
 311                         size = [@icon_dim.first, icon_height * MAX_ICONS]
 312                         resize(*size)
 313                         set_size_min(*size)
 314                         set_size_max(*size)
 315
 316                         evas.font_path_append("/usr/lib/X11/fonts/TTF")
 317
 318                         @handlers = [
 319                                 Ecore::EventHandler.new(IMAP::MailboxStatusEvent,
 320                                                         &method(:on_mailbox_status)),
 321                                 Ecore::EventHandler.new(IMAP::FinishedEvent,
 322                                                         &method(:on_finished))
 323                         ]
 324
 325                         s = File.expand_path("~/.e/apps/embrace/config.yaml")
 326                         @config = YAML.load(File.read(s))
 327
 328                         @server = nil
 329                         @timer = Ecore::Timer.new(30, &method(:on_timer))
 330                         on_timer
 331                 end
 332
 333                 def icon_height
 334                         @icon_dim.last
 335                 end
 336
 337                 def run
 338                         Ecore.main_loop_begin
 339                 end
 340
 341                 private
 342                 def on_timer
 343                         return unless @server.nil?
 344
 345                         @server = IMAP::Session.new(@config)
 346
 347                         true
 348                 end
 349
 350                 def on_mailbox_status(ev)
 351                         md = ev.name.match(/^Lists.(.+)$/)
 352                         if md.nil?
 353                                 lbl = ev.name
 354                         else
 355                                 lbl = md.captures.first
 356                         end
 357
 358                         found = evas.find_object(lbl)
 359
 360                         if ev.count.zero? && !found.nil? && @container.can_delete?
 361                                 @container.delete(found)
 362                         elsif !ev.count.zero? && found.nil? && @container.can_add?
 363                                 @container << MailboxIcon.new(evas, lbl)
 364                         end
 365
 366                         false
 367                 end
 368
 369                 def on_finished(ev)
 370                         @server = nil
 371                 end
 372         end
 373 end
 374
 375 Embrace::Main.instance.show
 376 Embrace::Main.instance.run