X-Git-Url: https://scm.cri.ensmp.fr/git/minwii.git/blobdiff_plain/e7854ed82aa375273bfbf772493739f875817061..46f3ffd7fdde386f41020171b5733e55a8e64a85:/src/minwii/widgets/instrumentselector.py

diff --git a/src/minwii/widgets/instrumentselector.py b/src/minwii/widgets/instrumentselector.py
new file mode 100755
index 0000000..6861643
--- /dev/null
+++ b/src/minwii/widgets/instrumentselector.py
@@ -0,0 +1,198 @@
+# -*- coding: utf-8 -*-
+"""
+Écran de sélection de l'instrument
+
+$Id$
+$URL$
+"""
+import os.path
+import pygame
+from eventutils import event_handler, EventDispatcher, EventHandlerMixin
+from cursors import WarpingCursor
+from config import FRAMERATE
+from config import  INSTRUMENTS
+from globals import BACKGROUND_LAYER
+from globals import FOREGROUND_LAYER
+from globals import CURSOR_LAYER
+from globals import hls_to_rgba_8bits
+
+
+class InstrumentSelector(pygame.sprite.LayeredDirty, EventHandlerMixin) :
+    
+    rows = 3
+    cols = 3
+    instruments = INSTRUMENTS
+
+    def __init__(self) :
+        super(InstrumentSelector, self).__init__()
+        #self._initRects()
+        self._initTiles()
+        self._initCursor()
+        self._inflatedTile = None
+        self.selectedInstrument = None
+    
+    def _initTiles(self) :
+        screen = pygame.display.get_surface()
+        tileWidth = int(round(float(screen.get_width()) / self.cols))
+        tileHeight = int(round(float(screen.get_height()) / self.rows))
+
+        self.tiles = []
+        instrus = list(self.instruments[:])
+        for y in range(self.cols) :
+            for x in range(self.rows) :
+                upperLeftCorner = (x * tileWidth, y * tileHeight)
+                rect = pygame.Rect(upperLeftCorner, (tileWidth, tileHeight))
+                # !!! s'il y avait plus de 3x3 tuiles !!!, il faudrait alors
+                # changer le tuple (x,y) qui concerne le point d'application de l'homotétie.
+                # Cf. InstrumentTile.inflate
+                tile = InstrumentTile(instrus.pop(0), self, rect, (x,y))
+                self.add(tile, layer=BACKGROUND_LAYER)
+                self.tiles.append(tile)
+    
+    def _initCursor(self) :
+        self.cursor = WarpingCursor(blinkMode=True)
+        self.add(self.cursor, layer=CURSOR_LAYER)
+
+
+    def run(self):
+        self._running = True
+        clock = pygame.time.Clock()
+        pygame.display.flip()
+        pygame.mouse.set_visible(False)
+        while self._running :
+            EventDispatcher.dispatchEvents()
+            dirty = self.draw(pygame.display.get_surface())
+            pygame.display.update(dirty)
+            clock.tick(FRAMERATE)
+    
+    def stop(self) :
+        self._running = False
+        pygame.mouse.set_visible(True)
+        self.cursor._stopBlink()
+
+    @event_handler(pygame.KEYDOWN)       
+    def handleKeyDown(self, event) :
+        if event.key == pygame.K_q:
+            self.stop()
+
+    @event_handler(pygame.MOUSEMOTION)
+    def onMouseMove(self, event) :
+        for tile in reversed(self.sprites()[:-1]) :
+            if tile.rect.collidepoint(*event.pos) :
+                self.raiseTileOver(tile)
+                break
+    
+    def raiseTileOver(self, tile) :
+        if not tile.inflated :
+            self.change_layer(tile, FOREGROUND_LAYER)
+            tile.inflate(tile.coords)
+            
+            if self._inflatedTile :
+                self._inflatedTile.deflate()
+                self.change_layer(self._inflatedTile, BACKGROUND_LAYER)
+            
+            self._inflatedTile = tile
+        
+    @event_handler(pygame.MOUSEBUTTONDOWN)
+    def selectInstrument(self, event) :
+        for tile in reversed(self.sprites()[:-1]) :
+            if tile.rect.collidepoint(*event.pos) :
+                self.selectedInstrument = tile.instrumentDescription
+                self.stop()
+                break
+
+
+
+class InstrumentTile(pygame.sprite.DirtySprite) :
+    
+    @staticmethod
+    def _get_instrument_image(name) :
+        imagePath = os.path.abspath(__file__).split(os.path.sep)[:-1]
+        imagePath.extend(['data', 'instruments'])
+        name, ext = os.path.splitext(name)
+        imagePath.append('%s%s' % (name, ext or '.jpg'))
+        return os.path.sep.join(imagePath)
+    
+    BORDER = 10
+    INFLATE_ZOOM = 0.4
+
+    def __init__(self, instrumentDescription, group, rect, coords) :
+        pygame.sprite.DirtySprite.__init__(self, group)
+        self.inflated = False
+        self.instrumentDescription = instrumentDescription
+        self.rect = rect
+        self._baseRect = rect.copy()
+        self.coords = coords
+        imagePath = InstrumentTile._get_instrument_image(instrumentDescription['name'])
+        self._img = pygame.image.load(imagePath)
+        self.update()
+    
+
+    def update(self) :
+        innerWidth, innerHeight = [l-self.BORDER*2 for l in self.rect.size]
+        innerSize = innerWidth, innerHeight
+        
+        border = pygame.Surface(self.rect.size)
+        border.fill((0xdd,0xdd,0xdd,255))
+        
+        bg = pygame.Surface(innerSize)
+        bg.fill((255,255,255,255))
+        bgRect = pygame.Rect((self.BORDER, self.BORDER), innerSize)
+
+        img = self._img
+        iWidth, iHeight = img.get_size()
+        imgRatio = float(iWidth) / iHeight
+        
+        # adapts dimensions
+        iw = innerWidth
+        ih = int(round(innerWidth  / imgRatio))
+
+        if ih > innerHeight:
+            ih = innerHeight
+            iw = int(round(innerHeight * imgRatio))
+        
+        imgPosition = ((innerWidth - iw) / 2, (innerHeight - ih) / 2)
+        imgRect = pygame.Rect(imgPosition, (iw, ih))
+        img = pygame.transform.smoothscale(img, (iw, ih))
+        
+        bg.blit(img, imgRect)
+        border.blit(bg, bgRect)
+        self.image = border
+    
+
+    def inflate(self, refPoint) :
+        self.inflated = True
+        keep = {}
+        for name in REF_POINTS[refPoint] :
+            keep[name] = getattr(self.rect, name)
+        
+        self.rect.inflate_ip(*[l*self.INFLATE_ZOOM for l in self.rect.size])
+        
+        for k, v in keep.items() :
+            setattr(self.rect, k, v)
+        
+        self.update()
+        self.dirty = 1
+    
+
+    def deflate(self) :
+        self.inflated = False
+        self.rect = self._baseRect.copy()
+        self.update()
+        self.dirty = 1
+            
+
+
+REF_POINTS = {
+    (0, 0) : ['top', 'left'],
+    (1, 0) : ['top'],
+    (2, 0) : ['top', 'right'],
+
+    (0, 1) : ['left'],
+    (1, 1) : [],
+    (2, 1) : ['right'],
+
+    (0, 2) : ['bottom', 'left'],
+    (1, 2) : ['bottom'],
+    (2, 2) : ['bottom', 'right']
+} 
\ No newline at end of file