ok pour le mode normal.
[minwii.git] / 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 def _initRects(self) :
47 """ création des espaces réservés pour
48 afficher les colonnes.
49 """
50 #ambitus = self.distinctNotes[-1].midi - self.distinctNotes[0].midi
51 #if ambitus <= 12 :
52 # self.keyboardLength = 8
53 #else :
54 # self.keyboardLength = 11
55 self.keyboardLength = len(self.distinctNotes)
56
57 screen = pygame.display.get_surface()
58
59 # taille de la zone d'affichage utile (bordure autour)
60 dispWidth = screen.get_width() - 2 * BORDER
61 dispHeight = screen.get_height() - 2 * BORDER
62
63 columnWidth = int(round(float(dispWidth) / self.keyboardLength))
64
65 rects = []
66 for i in range(self.keyboardLength) :
67 upperLeftCorner = (i*columnWidth + BORDER, BORDER)
68 rect = pygame.Rect(upperLeftCorner, (columnWidth, dispHeight))
69 rects.append(rect)
70
71 self.keyboardRects = rects
72
73 def _initColumns(self) :
74
75 hueStep = FIRST_HUE / (self.keyboardLength - 1)
76 for i, rect in enumerate(self.keyboardRects) :
77 hue = FIRST_HUE - hueStep * i
78 tone = self.distinctNotes[i]
79 c = Column(self, hue, rect, tone)
80 self.add(c, layer=BACKGROUND_LAYER)
81 self.columns[tone.midi] = c
82
83
84 def _initCursor(self) :
85 self.cursor = WarpingCursor(blinkMode=True)
86 self.add(self.cursor, layer=CURSOR_LAYER)
87
88 def run(self):
89 self._running = True
90 clock = pygame.time.Clock()
91 pygame.display.flip()
92 pygame.mouse.set_visible(False)
93 while self._running :
94 EventDispatcher.dispatchEvents()
95 dirty = self.draw(pygame.display.get_surface())
96 pygame.display.update(dirty)
97 clock.tick(FRAMERATE)
98
99 pygame.mouse.set_visible(True)
100 self.cursor._stopBlink()
101
102 @event_handler(pygame.KEYDOWN)
103 def handleKeyDown(self, event) :
104 if event.key == pygame.K_q:
105 self._running = False
106
107 @event_handler(pygame.MOUSEBUTTONDOWN)
108 def onMouseDown(self, event) :
109 # TODO à cleaner : on vire le dernier élément
110 # parce qu'il s'agit du curseur
111 for col in reversed(self.sprites()[:-1]) :
112 if col.rect.collidepoint(*event.pos):
113 self.raiseKeyDown(col)
114 break
115
116 @event_handler(pygame.MOUSEBUTTONUP)
117 def onMouseUp(self, event) :
118 for col in reversed(self.sprites()[:-1]) :
119 if col.rect.collidepoint(*event.pos) :
120 self.raiseKeyUp(col)
121 break
122
123 def raiseKeyDown(self, col) :
124 evt = pygame.event.Event(events.COLDOWN, column=col)
125 pygame.event.post(evt)
126
127 def raiseKeyUp(self, col) :
128 evt = pygame.event.Event(events.COLUP, column=col)
129 pygame.event.post(evt)
130
131
132 class PlayingScreen(_PlayingScreenBase) :
133 "fenêtre de jeu pour improvisation"
134
135 scale = [55, 57, 59, 60, 62, 64, 65, 67, 69, 71, 72]
136
137 def __init__(self, synth) :
138 distinctNotes = []
139 for midi in self.scale :
140 tone = Tone(midi)
141 distinctNotes.append(tone)
142
143 super(PlayingScreen, self).__init__(synth, distinctNotes)
144
145 @event_handler(events.NOTEON)
146 def noteon(self, evt) :
147 tone = evt.tone
148 self.synth.noteon(0, tone.midi, DEFAULT_MIDI_VELOCITY)
149
150 @event_handler(events.NOTEOFF)
151 def noteoff(self, evt) :
152 tone = evt.tone
153 self.synth.noteoff(0, tone.midi)
154
155
156 class SongPlayingScreen(_PlayingScreenBase) :
157
158 def __init__(self, synth, song, mode=PLAYING_MODES['NORMAL']) :
159 super(SongPlayingScreen, self).__init__(synth, song.distinctNotes)
160 self.song = song
161 self.currentColumn = None
162 self.noteIterator = self.song.iterNotes()
163 self.displayNext()
164
165 def displayNext(self) :
166 if self.currentColumn:
167 self.currentColumn.update(False)
168 note, verseIndex = self.noteIterator.next()
169 syllabus = note.lyrics[verseIndex].syllabus(encoding="iso-8859-1")
170 column = self.columns[note.midi]
171 column.update(True, syllabus)
172 self.currentColumn = column
173 self.currentNotePlayed = False
174
175 @event_handler(events.COLDOWN)
176 def handleColumnDown(self, event) :
177 col = event.column
178 if col.state:
179 self.synth.noteon(0, col.tone.midi, DEFAULT_MIDI_VELOCITY)
180 self.currentNotePlayed = True
181
182 @event_handler(events.COLUP)
183 def handleColumnUp(self, event) :
184 if self.currentNotePlayed :
185 self.synth.noteoff(0, self.currentColumn.tone.midi)
186 self.displayNext()