src/app/widgets/playingscreen.py

   1 # -*- coding: utf-8 -*-
   2 """
   3 Écran de jeu MinWii :
   4 bandes arc-en-ciel représentant un clavier.
   5
   6 $Id$
   7 $URL$
   8 """
   9 import pygame
  10 from cursors import WarpingCursor
  11 from column import Column
  12 import events
  13 from eventutils import event_handler, EventDispatcher, EventHandlerMixin
  14 import types
  15 from musicxml import Tone
  16
  17 from config import FRAMERATE
  18 from config import BORDER
  19 from config import FIRST_HUE
  20 from config import DEFAULT_MIDI_VELOCITY
  21
  22 from globals import BACKGROUND_LAYER
  23 from globals import CURSOR_LAYER
  24 from globals import PLAYING_MODES
  25
  26 class _PlayingScreenBase(pygame.sprite.LayeredDirty, EventHandlerMixin) :
  27
  28     def __init__(self, synth, distinctNotes=[]) :
  29         """
  30         distinctNotes : notes disctinctes présentes dans la chanson
  31         triées du plus grave au plus aigu.
  32         """
  33         super(_PlayingScreenBase, self).__init__()
  34         self.synth = synth
  35         self.distinctNotes = distinctNotes
  36         self.keyboardLength = 0
  37         self.keyboardRects = []
  38         self.cursor = None
  39         self._initRects()
  40         self.columns = {}
  41         self._initColumns()
  42         self._running = False
  43         self.draw(pygame.display.get_surface())
  44         self._initCursor()
  45
  46
  47     def _initRects(self) :
  48         """ création des espaces réservés pour
  49             afficher les colonnes.
  50         """
  51         #ambitus = self.distinctNotes[-1].midi - self.distinctNotes[0].midi
  52         #if ambitus <= 12 :
  53         #    self.keyboardLength = 8
  54         #else :
  55         #    self.keyboardLength = 11
  56         self.keyboardLength = len(self.distinctNotes)
  57
  58         screen = pygame.display.get_surface()
  59
  60         # taille de la zone d'affichage utile (bordure autour)
  61         dispWidth = screen.get_width() - 2 * BORDER
  62         dispHeight = screen.get_height() - 2 * BORDER
  63
  64         columnWidth = int(round(float(dispWidth) / self.keyboardLength))
  65
  66         rects = []
  67         for i in range(self.keyboardLength) :
  68             upperLeftCorner = (i*columnWidth + BORDER, BORDER)
  69             rect = pygame.Rect(upperLeftCorner, (columnWidth, dispHeight))
  70             rects.append(rect)
  71
  72         self.keyboardRects = rects
  73
  74     def _initColumns(self) :
  75
  76         hueStep = FIRST_HUE / (self.keyboardLength - 1)
  77         for i, rect in enumerate(self.keyboardRects) :
  78             hue = FIRST_HUE - hueStep * i
  79             tone = self.distinctNotes[i]
  80             c = Column(self, hue, rect, tone)
  81             self.add(c, layer=BACKGROUND_LAYER)
  82             self.columns[tone.midi] = c
  83
  84
  85     def _initCursor(self) :
  86         self.cursor = WarpingCursor(blinkMode=True)
  87         self.add(self.cursor, layer=CURSOR_LAYER)
  88
  89     def run(self):
  90         self._running = True
  91         clock = pygame.time.Clock()
  92         pygame.display.flip()
  93         pygame.mouse.set_visible(False)
  94         while self._running :
  95             EventDispatcher.dispatchEvents()
  96             dirty = self.draw(pygame.display.get_surface())
  97             pygame.display.update(dirty)
  98             clock.tick(FRAMERATE)
  99
 100         pygame.mouse.set_visible(True)
 101         self.cursor._stopBlink()
 102
 103     @event_handler(pygame.KEYDOWN)
 104     def handleKeyDown(self, event) :
 105         if event.key == pygame.K_q:
 106             self._running = False
 107
 108
 109 class PlayingScreen(_PlayingScreenBase) :
 110     "fenêtre de jeu pour improvisation"
 111
 112     scale = [55, 57, 59, 60, 62, 64, 65, 67, 69, 71, 72]
 113
 114     def __init__(self, synth) :
 115         distinctNotes = []
 116         for midi in self.scale :
 117             tone = Tone(midi)
 118             distinctNotes.append(tone)
 119
 120         super(PlayingScreen, self).__init__(synth, distinctNotes)
 121
 122     @event_handler(events.NOTEON)
 123     def noteon(self, evt) :
 124         tone = evt.tone
 125         self.synth.noteon(0, tone.midi, DEFAULT_MIDI_VELOCITY)
 126
 127     @event_handler(events.NOTEOFF)
 128     def noteoff(self, evt) :
 129         tone = evt.tone
 130         self.synth.noteoff(0, tone.midi)
 131
 132
 133 class SongPlayingScreen(_PlayingScreenBase) :
 134
 135     def __init__(self, synth, song, mode=PLAYING_MODES['NORMAL']) :
 136         super(SongPlayingScreen, self).__init__(synth, song.distinctNotes)
 137         self.song = song
 138         self.noteIterator = self.song.iterNotes()
 139         self.play()
 140
 141     def play(self) :
 142         note, verseIndex = self.noteIterator.next()
 143         syllabus = note.lyrics[verseIndex].syllabus()
 144         column = self.columns[note.midi]
 145         column.update(True, syllabus)
 146
 147
 148     @event_handler(events.NOTEON)
 149     def noteon(self, evt) :
 150         tone = evt.tone
 151         self.synth.noteon(0, tone.midi, DEFAULT_MIDI_VELOCITY)
 152
 153     @event_handler(events.NOTEOFF)
 154     def noteoff(self, evt) :
 155         tone = evt.tone
 156         self.synth.noteoff(0, tone.midi)
 157
 158
 159
 160 #class Column(pygame.sprite.DirtySprite, EventHandlerMixin) :
 161 #
 162 #    def __init__(self, group, hue, rect, tone) :
 163 #        pygame.sprite.DirtySprite.__init__(self, group)
 164 #        self.state = False
 165 #
 166 #        # nom de l'intonation
 167 #        self.tone = tone
 168 #        toneName = FONT.render(tone.nom, True, (0,0,0))
 169 #
 170 #        # état off : surface unie et nom de l'intonation
 171 #        sur = pygame.surface.Surface(rect.size)
 172 #        rgba = hls_to_rgba_8bits(hue, OFF_LUMINANCE, OFF_SATURATION)
 173 #        sur.fill(rgba)
 174 #        w, h = rect.w, rect.h
 175 #        tw, th, = toneName.get_size()
 176 #        toneRect = pygame.Rect(((w - tw) / 2, h - th), (tw, th))
 177 #        sur.blit(toneName, toneRect)
 178 #        self.surOff = sur
 179 #        self.rectOff = rect
 180 #
 181 #
 182 #        # état on : surface dégradée avec nom de la note avec largeur agrandie
 183 #        topRgba = hls_to_rgba_8bits(hue, ON_TOP_LUMINANCE, ON_SATURATION, ON_COLUMN_ALPHA)
 184 #        bottomRgba = hls_to_rgba_8bits(hue, ON_BOTTOM_LUMINANCE, ON_SATURATION, ON_COLUMN_ALPHA)
 185 #        onWidth = rect.width * ON_COLUMN_OVERSIZING
 186 #        onLeft = rect.centerx - onWidth / 2
 187 #        rectOn = pygame.Rect((onLeft, 0),
 188 #                             (onWidth, rect.height))
 189 #        self.surOn = gradients.vertical(rectOn.size, topRgba, bottomRgba)
 190 #        w, h = rectOn.w, rectOn.h
 191 #        toneRect = pygame.Rect(((w - tw) / 2, h - th), (tw, th))
 192 #        self.surOn.blit(toneName, toneRect)
 193 #        self.rectOn = rectOn
 194 #
 195 #        self.image = self.surOff
 196 #        self.rect = rect
 197 #        #EventDispatcher.addEventListener(pygame.MOUSEBUTTONDOWN, self.onMouseDown)
 198 #        #EventDispatcher.addEventListener(pygame.MOUSEBUTTONUP, self.onMouseUp)
 199 #
 200 #    def update(self, state, syllabus='') :
 201 #        group = self.groups()[0]
 202 #        if state == self.state :
 203 #            # no changes
 204 #            return
 205 #        if state :
 206 #            group.change_layer(self, FOREGROUND_LAYER)
 207 #            sur = self.surOn
 208 #            if syllabus :
 209 #                sur = sur.copy()
 210 #                renderedSyl = FONT.render(syllabus, True, (0,0,0))
 211 #                sw, sh, = renderedSyl.get_size()
 212 #                w, h = self.rectOn.w, self.rectOn.h
 213 #                sylRect = pygame.Rect(((w - sw) / 2, (h - sh) / 2), (sw, sh))
 214 #                sur.blit(renderedSyl, sylRect)
 215 #
 216 #            self.image = sur
 217 #            self.rect = self.rectOn
 218 #        else :
 219 #            group.change_layer(self, BACKGROUND_LAYER)
 220 #            self.image = self.surOff
 221 #            self.rect = self.rectOff
 222 #        self.state = state
 223 #        self.dirty = 1
 224 #
 225 #    @event_handler(pygame.MOUSEBUTTONDOWN)
 226 #    def onMouseDown(self, event) :
 227 #        if self.rect.collidepoint(*event.pos) :
 228 #            self.update(True)
 229 #            self.raiseNoteOn()
 230 #
 231 #    @event_handler(pygame.MOUSEBUTTONUP)
 232 #    def onMouseUp(self, event) :
 233 #        self.update(False)
 234 #        self.raiseNoteOff()
 235 #
 236 #    def raiseNoteOn(self) :
 237 #        evt = pygame.event.Event(events.NOTEON, tone=self.tone)
 238 #        pygame.event.post(evt)
 239 #
 240 #    def raiseNoteOff(self) :
 241 #        evt = pygame.event.Event(events.NOTEOFF, tone=self.tone)
 242 #        pygame.event.post(evt)
 243 #
 244 #
 245 #
 246 #def hls_to_rgba_8bits(h, l, s, a=1) :
 247 #    #convert to rgb ranging from 0 to 255
 248 #    rgba = [floor(255 * i) for i in hls_to_rgb(h, l, s) + (a,)]
 249 #    return tuple(rgba)
 250 #