git.maemo.org Git - watersofshiloah/blob - src/presenter.py

   1 import logging
   2
   3 import gobject
   4 import pango
   5 import cairo
   6 import gtk
   7
   8 import util.misc as misc_utils
   9
  10
  11 _moduleLogger = logging.getLogger(__name__)
  12
  13
  14 class NavigationBox(gobject.GObject):
  15
  16         __gsignals__ = {
  17                 'action' : (
  18                         gobject.SIGNAL_RUN_LAST,
  19                         gobject.TYPE_NONE,
  20                         (gobject.TYPE_STRING, ),
  21                 ),
  22                 'navigating' : (
  23                         gobject.SIGNAL_RUN_LAST,
  24                         gobject.TYPE_NONE,
  25                         (gobject.TYPE_STRING, ),
  26                 ),
  27         }
  28
  29         MINIMUM_MOVEMENT = 20
  30
  31         _NO_POSITION = -1, -1
  32
  33         def __init__(self):
  34                 gobject.GObject.__init__(self)
  35                 self._eventBox = gtk.EventBox()
  36                 self._eventBox.connect("button_press_event", self._on_button_press)
  37                 self._eventBox.connect("button_release_event", self._on_button_release)
  38                 self._eventBox.connect("motion_notify_event", self._on_motion_notify)
  39
  40                 self._isPortrait = True
  41                 self._clickPosition = self._NO_POSITION
  42
  43         @property
  44         def toplevel(self):
  45                 return self._eventBox
  46
  47         def set_orientation(self, orientation):
  48                 if orientation == gtk.ORIENTATION_VERTICAL:
  49                         self._isPortrait = True
  50                 elif orientation == gtk.ORIENTATION_HORIZONTAL:
  51                         self._isPortrait = False
  52                 else:
  53                         raise NotImplementedError(orientation)
  54
  55         def is_active(self):
  56                 return self._clickPosition != self._NO_POSITION
  57
  58         def get_state(self, newCoord):
  59                 if self._clickPosition == self._NO_POSITION:
  60                         return ""
  61
  62                 if self._isPortrait:
  63                         delta = (
  64                                 newCoord[0] - self._clickPosition[0],
  65                                 - (newCoord[1] - self._clickPosition[1])
  66                         )
  67                 else:
  68                         delta = (
  69                                 newCoord[1] - self._clickPosition[1],
  70                                 - (newCoord[0] - self._clickPosition[0])
  71                         )
  72                 absDelta = (abs(delta[0]), abs(delta[1]))
  73                 if max(*absDelta) < self.MINIMUM_MOVEMENT:
  74                         return "clicking"
  75
  76                 if absDelta[0] < absDelta[1]:
  77                         if 0 < delta[1]:
  78                                 return "up"
  79                         else:
  80                                 return "down"
  81                 else:
  82                         if 0 < delta[0]:
  83                                 return "right"
  84                         else:
  85                                 return "left"
  86
  87         @misc_utils.log_exception(_moduleLogger)
  88         def _on_button_press(self, widget, event):
  89                 if self._clickPosition != self._NO_POSITION:
  90                         _moduleLogger.debug("Ignoring double click")
  91                 self._clickPosition = event.get_coords()
  92
  93                 self.emit("navigating", "clicking")
  94
  95         @misc_utils.log_exception(_moduleLogger)
  96         def _on_button_release(self, widget, event):
  97                 assert self._clickPosition != self._NO_POSITION
  98                 try:
  99                         mousePosition = event.get_coords()
 100                         state = self.get_state(mousePosition)
 101                         assert state
 102                         self.emit("action", state)
 103                 finally:
 104                         self._clickPosition = self._NO_POSITION
 105
 106         @misc_utils.log_exception(_moduleLogger)
 107         def _on_motion_notify(self, widget, event):
 108                 if self._clickPosition == self._NO_POSITION:
 109                         return
 110
 111                 mousePosition = event.get_coords()
 112                 newState = self.get_state(mousePosition)
 113                 self.emit("navigating", newState)
 114
 115
 116 gobject.type_register(NavigationBox)
 117
 118
 119 class StreamPresenter(object):
 120
 121         BUTTON_STATE_PLAY = "play"
 122         BUTTON_STATE_PAUSE = "pause"
 123         BUTTON_STATE_NEXT = "next"
 124         BUTTON_STATE_BACK = "back"
 125         BUTTON_STATE_UP = "up"
 126         BUTTON_STATE_CANCEL = "cancel"
 127
 128         _STATE_TO_IMAGE = {
 129                 BUTTON_STATE_PLAY: "play.png",
 130                 BUTTON_STATE_PAUSE: "pause.png",
 131                 BUTTON_STATE_NEXT: "next.png",
 132                 BUTTON_STATE_BACK: "prev.png",
 133         }
 134
 135         def __init__(self, player, store):
 136                 self._store = store
 137
 138                 self._player = player
 139                 self._player.connect("state-change", self._on_player_state_change)
 140                 self._player.connect("navigate-change", self._on_player_nav_change)
 141                 self._player.connect("title-change", self._on_player_title_change)
 142
 143                 self._image = gtk.DrawingArea()
 144                 self._image.connect("expose_event", self._on_expose)
 145                 self._imageNav = NavigationBox()
 146                 self._imageNav.toplevel.add(self._image)
 147                 self._imageNav.connect("navigating", self._on_navigating)
 148                 self._imageNav.connect("action", self._on_nav_action)
 149
 150                 self._isPortrait = True
 151
 152                 self._canNavigate = True
 153                 self._potentialButtonState = self.BUTTON_STATE_PLAY
 154                 self._currentButtonState = self.BUTTON_STATE_PLAY
 155
 156                 imagePath = self._store.STORE_LOOKUP[self._player.background]
 157                 self._backgroundImage = self._store.get_surface_from_store(imagePath)
 158                 imagePath = self._STATE_TO_IMAGE[self._currentButtonState]
 159                 self._buttonImage = self._store.get_surface_from_store(imagePath)
 160
 161                 if self._isPortrait:
 162                         backWidth = self._backgroundImage.get_width()
 163                         backHeight = self._backgroundImage.get_height()
 164                 else:
 165                         backHeight = self._backgroundImage.get_width()
 166                         backWidth = self._backgroundImage.get_height()
 167                 self._image.set_size_request(backWidth, backHeight)
 168
 169         @property
 170         def toplevel(self):
 171                 return self._imageNav.toplevel
 172
 173         def set_orientation(self, orientation):
 174                 self._imageNav.set_orientation(orientation)
 175
 176                 if orientation == gtk.ORIENTATION_VERTICAL:
 177                         self._isPortrait = True
 178                 elif orientation == gtk.ORIENTATION_HORIZONTAL:
 179                         self._isPortrait = False
 180                 else:
 181                         raise NotImplementedError(orientation)
 182
 183                 cairoContext = self._image.window.cairo_create()
 184                 if not self._isPortrait:
 185                         cairoContext.transform(cairo.Matrix(0, 1, 1, 0, 0, 0))
 186                 self._draw_presenter(cairoContext, self._currentButtonState)
 187
 188         @misc_utils.log_exception(_moduleLogger)
 189         def _on_player_state_change(self, player, newState):
 190                 # @bug We only want to folow changes in player when its active
 191                 if newState == "play":
 192                         newState = self.BUTTON_STATE_PLAY
 193                 elif newState == "pause":
 194                         newState = self.BUTTON_STATE_PAUSE
 195                 elif newState == "stop":
 196                         newState = self.BUTTON_STATE_PAUSE
 197                 else:
 198                         newState = self._currentButtonState
 199
 200                 if newState != self._currentButtonState:
 201                         self._currentButtonState = newState
 202                         if not self._imageNav.is_active():
 203                                 cairoContext = self._image.window.cairo_create()
 204                                 if not self._isPortrait:
 205                                         cairoContext.transform(cairo.Matrix(0, 1, 1, 0, 0, 0))
 206                                 self._draw_state(cairoContext, self._currentButtonState)
 207
 208         @misc_utils.log_exception(_moduleLogger)
 209         def _on_player_nav_change(self, player, newState):
 210                 # @bug We only want to folow changes in player when its active
 211                 canNavigate = self._player.can_navigate
 212                 newPotState = self._potentialButtonState
 213                 if self._canNavigate != canNavigate:
 214                         self._canNavigate = canNavigate
 215                         if self._potentialButtonState in (self.BUTTON_STATE_NEXT, self.BUTTON_STATE_BACK):
 216                                 if self._currentButtonState == self.BUTTON_STATE_PLAY:
 217                                         newPotState = self.BUTTON_STATE_PAUSE
 218                                 else:
 219                                         newPotState = self.BUTTON_STATE_PLAY
 220
 221                 if newPotState != self._potentialButtonState:
 222                         self._potentialButtonState = newPotState
 223                         if not self._imageNav.is_active():
 224                                 cairoContext = self._image.window.cairo_create()
 225                                 if not self._isPortrait:
 226                                         cairoContext.transform(cairo.Matrix(0, 1, 1, 0, 0, 0))
 227                                 self._draw_state(cairoContext, self._potentialButtonState)
 228
 229         @misc_utils.log_exception(_moduleLogger)
 230         def _on_player_title_change(self, player, newState):
 231                 # @bug We only want to folow changes in player when its active
 232                 if self._isPortrait:
 233                         backWidth = self._backgroundImage.get_width()
 234                         backHeight = self._backgroundImage.get_height()
 235                 else:
 236                         backHeight = self._backgroundImage.get_width()
 237                         backWidth = self._backgroundImage.get_height()
 238                 self._image.set_size_request(backWidth, backHeight)
 239
 240                 imagePath = self._store.STORE_LOOKUP[self._player.background]
 241                 self._backgroundImage = self._store.get_surface_from_store(imagePath)
 242                 if not self._imageNav.get_state():
 243                         cairoContext = self._image.window.cairo_create()
 244                         if not self._isPortrait:
 245                                 cairoContext.transform(cairo.Matrix(0, 1, 1, 0, 0, 0))
 246                         self._draw_presenter(cairoContext, self._currentButtonState)
 247                 else:
 248                         cairoContext = self._image.window.cairo_create()
 249                         if not self._isPortrait:
 250                                 cairoContext.transform(cairo.Matrix(0, 1, 1, 0, 0, 0))
 251                         self._draw_presenter(cairoContext, self._potentialButtonState)
 252
 253         @misc_utils.log_exception(_moduleLogger)
 254         def _on_navigating(self, widget, navState):
 255                 buttonState = self._translate_state(navState)
 256                 self._potentialButtonState = buttonState
 257                 cairoContext = self._image.window.cairo_create()
 258                 if not self._isPortrait:
 259                         cairoContext.transform(cairo.Matrix(0, 1, 1, 0, 0, 0))
 260                 self._draw_state(cairoContext, self._potentialButtonState)
 261
 262         @misc_utils.log_exception(_moduleLogger)
 263         def _on_nav_action(self, widget, navState):
 264                 # @bug We only want to folow changes in player when its active
 265                 try:
 266                         buttonState = self._translate_state(navState)
 267                         if buttonState == self.BUTTON_STATE_PLAY:
 268                                 self._player.play()
 269                         elif buttonState == self.BUTTON_STATE_PAUSE:
 270                                 self._player.pause()
 271                         elif buttonState == self.BUTTON_STATE_NEXT:
 272                                 self._player.next()
 273                         elif buttonState == self.BUTTON_STATE_BACK:
 274                                 self._player.back()
 275                         elif buttonState == self.BUTTON_STATE_UP:
 276                                 raise NotImplementedError("Drag-down not implemented yet")
 277                         elif buttonState == self.BUTTON_STATE_CANCEL:
 278                                 pass
 279                 finally:
 280                         if self._player.state == "play":
 281                                 buttonState = self.BUTTON_STATE_PLAY
 282                         else:
 283                                 buttonState = self.BUTTON_STATE_PAUSE
 284                         self._potentialButtonState = buttonState
 285                         cairoContext = self._image.window.cairo_create()
 286                         if not self._isPortrait:
 287                                 cairoContext.transform(cairo.Matrix(0, 1, 1, 0, 0, 0))
 288                         self._draw_state(cairoContext, self._potentialButtonState)
 289
 290         def _translate_state(self, navState):
 291                 if navState == "clicking" or not self._canNavigate:
 292                         if self._currentButtonState == self.BUTTON_STATE_PLAY:
 293                                 return self.BUTTON_STATE_PAUSE
 294                         else:
 295                                 return self.BUTTON_STATE_PLAY
 296                 elif navState == "down":
 297                         return self.BUTTON_STATE_UP
 298                 elif navState == "up":
 299                         return self.BUTTON_STATE_CANCEL
 300                 elif navState == "left":
 301                         return self.BUTTON_STATE_NEXT
 302                 elif navState == "right":
 303                         return self.BUTTON_STATE_BACK
 304
 305         @misc_utils.log_exception(_moduleLogger)
 306         def _on_expose(self, widget, event):
 307                 self._potentialButtonState = self._player.state
 308                 cairoContext = self._image.window.cairo_create()
 309                 if not self._isPortrait:
 310                         cairoContext.transform(cairo.Matrix(0, 1, 1, 0, 0, 0))
 311                 self._draw_presenter(cairoContext, self._player.state)
 312
 313         def _draw_presenter(self, cairoContext, state):
 314                 assert state in (self._currentButtonState, self._potentialButtonState)
 315
 316                 # Blank things
 317                 rect = self._image.get_allocation()
 318                 cairoContext.rectangle(
 319                         0,
 320                         0,
 321                         rect.width,
 322                         rect.height,
 323                 )
 324                 cairoContext.set_source_rgb(0, 0, 0)
 325                 cairoContext.fill()
 326                 cairoContext.paint()
 327
 328                 # Draw Background
 329                 cairoContext.set_source_surface(
 330                         self._backgroundImage,
 331                         0,
 332                         0,
 333                 )
 334                 cairoContext.paint()
 335
 336                 # title
 337                 if self._player.title:
 338                         _moduleLogger.info("Displaying text")
 339                         backWidth = self._backgroundImage.get_width()
 340                         backHeight = self._backgroundImage.get_height()
 341
 342                         pangoContext = self._image.create_pango_context()
 343                         textLayout = pango.Layout(pangoContext)
 344                         textLayout.set_markup(self._player.title)
 345
 346                         textWidth, textHeight = textLayout.get_pixel_size()
 347                         textX = backWidth / 2 - textWidth / 2
 348                         textY = backHeight - textHeight - self._buttonImage.get_height()
 349
 350                         cairoContext.move_to(textX, textY)
 351                         cairoContext.set_source_rgb(0, 0, 0)
 352                         cairoContext.show_layout(textLayout)
 353
 354                 self._draw_state(cairoContext, state)
 355
 356         def _draw_state(self, cairoContext, state):
 357                 assert state in (self._currentButtonState, self._potentialButtonState)
 358                 if state == self.BUTTON_STATE_CANCEL:
 359                         state = self._currentButtonState
 360
 361                 backWidth = self._backgroundImage.get_width()
 362                 backHeight = self._backgroundImage.get_height()
 363
 364                 imagePath = self._STATE_TO_IMAGE[state]
 365                 self._buttonImage = self._store.get_surface_from_store(imagePath)
 366                 cairoContext.set_source_surface(
 367                         self._buttonImage,
 368                         backWidth / 2 - self._buttonImage.get_width() / 2,
 369                         backHeight - self._buttonImage.get_height() + 5,
 370                 )
 371                 cairoContext.paint()
 372
 373
 374 class StreamMiniPresenter(object):
 375
 376         def __init__(self, player, store):
 377                 self._store = store
 378                 self._player = player
 379                 self._player.connect("state-change", self._on_player_state_change)
 380
 381                 self._button = gtk.Image()
 382                 if self._player.state == "play":
 383                         self._store.set_image_from_store(self._button, self._store.STORE_LOOKUP["play"])
 384                 else:
 385                         self._store.set_image_from_store(self._button, self._store.STORE_LOOKUP["pause"])
 386
 387                 self._eventBox = gtk.EventBox()
 388                 self._eventBox.add(self._button)
 389                 self._eventBox.connect("button_release_event", self._on_button_release)
 390
 391         @property
 392         def toplevel(self):
 393                 return self._eventBox
 394
 395         @misc_utils.log_exception(_moduleLogger)
 396         def _on_player_state_change(self, player, newState):
 397                 if self._player.state == "play":
 398                         self._store.set_image_from_store(self._button, self._store.STORE_LOOKUP["play"])
 399                 else:
 400                         self._store.set_image_from_store(self._button, self._store.STORE_LOOKUP["pause"])
 401
 402         @misc_utils.log_exception(_moduleLogger)
 403         def _on_button_release(self, widget, event):
 404                 if self._player.state == "play":
 405                         self._player.pause()
 406                 else:
 407                         self._player.play()