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 colorsys import hls_to_rgb
  11 #from gradients import gradients
  12 from cursors import WarpingCursor
  13 from column import Column
  14 import events
  15 from eventutils import event_handler, EventDispatcher, EventHandlerMixin
  16 #from math import floor
  17 import types
  18 from musicxml import Tone
  19
  20 from config import FRAMERATE
  21 from config import BORDER
  22 from config import FIRST_HUE
  23 #from config import OFF_LUMINANCE
  24 #from config import OFF_SATURATION
  25 #from config import ON_TOP_LUMINANCE
  26 #from config import ON_BOTTOM_LUMINANCE
  27 #from config import ON_SATURATION
  28 #from config import ON_COLUMN_OVERSIZING
  29 #from config import ON_COLUMN_ALPHA
  30 from config import DEFAULT_MIDI_VELOCITY
  31
  32 from globals import BACKGROUND_LAYER
  33 from globals import CURSOR_LAYER
  34 from globals import PLAYING_MODES
  35
  36 class _PlayingScreenBase(pygame.sprite.LayeredDirty, EventHandlerMixin) :
  37
  38     def __init__(self, synth, distinctNotes=[]) :
  39         """
  40         distinctNotes : notes disctinctes présentes dans la chanson
  41         triées du plus grave au plus aigu.
  42         """
  43         super(_PlayingScreenBase, self).__init__()
  44         self.synth = synth
  45         self.distinctNotes = distinctNotes
  46         self.keyboardLength = 0
  47         self.keyboardRects = []
  48         self.cursor = None
  49         self._initRects()
  50         self.columns = {}
  51         self._initColumns()
  52         self._running = False
  53         self.draw(pygame.display.get_surface())
  54         self._initCursor()
  55
  56
  57     def _initRects(self) :
  58         """ création des espaces réservés pour
  59             afficher les colonnes.
  60         """
  61         #ambitus = self.distinctNotes[-1].midi - self.distinctNotes[0].midi
  62         #if ambitus <= 12 :
  63         #    self.keyboardLength = 8
  64         #else :
  65         #    self.keyboardLength = 11
  66         self.keyboardLength = len(self.distinctNotes)
  67
  68         screen = pygame.display.get_surface()
  69
  70         # taille de la zone d'affichage utile (bordure autour)
  71         dispWidth = screen.get_width() - 2 * BORDER
  72         dispHeight = screen.get_height() - 2 * BORDER
  73
  74         columnWidth = int(round(float(dispWidth) / self.keyboardLength))
  75
  76         rects = []
  77         for i in range(self.keyboardLength) :
  78             upperLeftCorner = (i*columnWidth + BORDER, BORDER)
  79             rect = pygame.Rect(upperLeftCorner, (columnWidth, dispHeight))
  80             rects.append(rect)
  81
  82         self.keyboardRects = rects
  83
  84     def _initColumns(self) :
  85
  86         hueStep = FIRST_HUE / (self.keyboardLength - 1)
  87         for i, rect in enumerate(self.keyboardRects) :
  88             hue = FIRST_HUE - hueStep * i
  89             tone = self.distinctNotes[i]
  90             c = Column(self, hue, rect, tone)
  91             self.add(c, layer=BACKGROUND_LAYER)
  92             self.columns[tone.midi] = c
  93
  94
  95     def _initCursor(self) :
  96         self.cursor = WarpingCursor(blinkMode=True)
  97         self.add(self.cursor, layer=CURSOR_LAYER)
  98
  99     def run(self):
 100         self._running = True
 101         clock = pygame.time.Clock()
 102         pygame.display.flip()
 103         pygame.mouse.set_visible(False)
 104         while self._running :
 105             EventDispatcher.dispatchEvents()
 106             dirty = self.draw(pygame.display.get_surface())
 107             pygame.display.update(dirty)
 108             clock.tick(FRAMERATE)
 109
 110         pygame.mouse.set_visible(True)
 111         self.cursor._stopBlink()
 112
 113     @event_handler(pygame.KEYDOWN)
 114     def handleKeyDown(self, event) :
 115         if event.key == pygame.K_q:
 116             self._running = False
 117
 118
 119 class PlayingScreen(_PlayingScreenBase) :
 120     "fenêtre de jeu pour improvisation"
 121
 122     scale = [55, 57, 59, 60, 62, 64, 65, 67, 69, 71, 72]
 123
 124     def __init__(self, synth) :
 125         distinctNotes = []
 126         for midi in self.scale :
 127             tone = Tone(midi)
 128             distinctNotes.append(tone)
 129
 130         super(PlayingScreen, self).__init__(synth, distinctNotes)
 131
 132     @event_handler(events.NOTEON)
 133     def noteon(self, evt) :
 134         tone = evt.tone
 135         self.synth.noteon(0, tone.midi, DEFAULT_MIDI_VELOCITY)
 136
 137     @event_handler(events.NOTEOFF)
 138     def noteoff(self, evt) :
 139         tone = evt.tone
 140         self.synth.noteoff(0, tone.midi)
 141
 142
 143 class SongPlayingScreen(_PlayingScreenBase) :
 144
 145     def __init__(self, synth, song, mode=PLAYING_MODES['NORMAL']) :
 146         super(SongPlayingScreen, self).__init__(synth, song.distinctNotes)
 147         self.song = song
 148         self.noteIterator = self.song.iterNotes()
 149         self.play()
 150
 151     def play(self) :
 152         note, verseIndex = self.noteIterator.next()
 153         syllabus = note.lyrics[verseIndex].syllabus()
 154         column = self.columns[note.midi]
 155         column.update(True, syllabus)
 156
 157
 158     @event_handler(events.NOTEON)
 159     def noteon(self, evt) :
 160         tone = evt.tone
 161         self.synth.noteon(0, tone.midi, DEFAULT_MIDI_VELOCITY)
 162
 163     @event_handler(events.NOTEOFF)
 164     def noteoff(self, evt) :
 165         tone = evt.tone
 166         self.synth.noteoff(0, tone.midi)
 167
 168
 169
 170 #class Column(pygame.sprite.DirtySprite, EventHandlerMixin) :
 171 #
 172 #    def __init__(self, group, hue, rect, tone) :
 173 #        pygame.sprite.DirtySprite.__init__(self, group)
 174 #        self.state = False
 175 #
 176 #        # nom de l'intonation
 177 #        self.tone = tone
 178 #        toneName = FONT.render(tone.nom, True, (0,0,0))
 179 #
 180 #        # état off : surface unie et nom de l'intonation
 181 #        sur = pygame.surface.Surface(rect.size)
 182 #        rgba = hls_to_rgba_8bits(hue, OFF_LUMINANCE, OFF_SATURATION)
 183 #        sur.fill(rgba)
 184 #        w, h = rect.w, rect.h
 185 #        tw, th, = toneName.get_size()
 186 #        toneRect = pygame.Rect(((w - tw) / 2, h - th), (tw, th))
 187 #        sur.blit(toneName, toneRect)
 188 #        self.surOff = sur
 189 #        self.rectOff = rect
 190 #
 191 #
 192 #        # état on : surface dégradée avec nom de la note avec largeur agrandie
 193 #        topRgba = hls_to_rgba_8bits(hue, ON_TOP_LUMINANCE, ON_SATURATION, ON_COLUMN_ALPHA)
 194 #        bottomRgba = hls_to_rgba_8bits(hue, ON_BOTTOM_LUMINANCE, ON_SATURATION, ON_COLUMN_ALPHA)
 195 #        onWidth = rect.width * ON_COLUMN_OVERSIZING
 196 #        onLeft = rect.centerx - onWidth / 2
 197 #        rectOn = pygame.Rect((onLeft, 0),
 198 #                             (onWidth, rect.height))
 199 #        self.surOn = gradients.vertical(rectOn.size, topRgba, bottomRgba)
 200 #        w, h = rectOn.w, rectOn.h
 201 #        toneRect = pygame.Rect(((w - tw) / 2, h - th), (tw, th))
 202 #        self.surOn.blit(toneName, toneRect)
 203 #        self.rectOn = rectOn
 204 #
 205 #        self.image = self.surOff
 206 #        self.rect = rect
 207 #        #EventDispatcher.addEventListener(pygame.MOUSEBUTTONDOWN, self.onMouseDown)
 208 #        #EventDispatcher.addEventListener(pygame.MOUSEBUTTONUP, self.onMouseUp)
 209 #
 210 #    def update(self, state, syllabus='') :
 211 #        group = self.groups()[0]
 212 #        if state == self.state :
 213 #            # no changes
 214 #            return
 215 #        if state :
 216 #            group.change_layer(self, FOREGROUND_LAYER)
 217 #            sur = self.surOn
 218 #            if syllabus :
 219 #                sur = sur.copy()
 220 #                renderedSyl = FONT.render(syllabus, True, (0,0,0))
 221 #                sw, sh, = renderedSyl.get_size()
 222 #                w, h = self.rectOn.w, self.rectOn.h
 223 #                sylRect = pygame.Rect(((w - sw) / 2, (h - sh) / 2), (sw, sh))
 224 #                sur.blit(renderedSyl, sylRect)
 225 #
 226 #            self.image = sur
 227 #            self.rect = self.rectOn
 228 #        else :
 229 #            group.change_layer(self, BACKGROUND_LAYER)
 230 #            self.image = self.surOff
 231 #            self.rect = self.rectOff
 232 #        self.state = state
 233 #        self.dirty = 1
 234 #
 235 #    @event_handler(pygame.MOUSEBUTTONDOWN)
 236 #    def onMouseDown(self, event) :
 237 #        if self.rect.collidepoint(*event.pos) :
 238 #            self.update(True)
 239 #            self.raiseNoteOn()
 240 #
 241 #    @event_handler(pygame.MOUSEBUTTONUP)
 242 #    def onMouseUp(self, event) :
 243 #        self.update(False)
 244 #        self.raiseNoteOff()
 245 #
 246 #    def raiseNoteOn(self) :
 247 #        evt = pygame.event.Event(events.NOTEON, tone=self.tone)
 248 #        pygame.event.post(evt)
 249 #
 250 #    def raiseNoteOff(self) :
 251 #        evt = pygame.event.Event(events.NOTEOFF, tone=self.tone)
 252 #        pygame.event.post(evt)
 253 #
 254 #
 255 #
 256 #def hls_to_rgba_8bits(h, l, s, a=1) :
 257 #    #convert to rgb ranging from 0 to 255
 258 #    rgba = [floor(255 * i) for i in hls_to_rgb(h, l, s) + (a,)]
 259 #    return tuple(rgba)
 260 #