From bebdc195ab2e25c1049b87ab8ba96f7ecf964f92 Mon Sep 17 00:00:00 2001
From: CarlosC <ccarvallo@tecnopy.org>
Date: Sat, 26 Jan 2013 19:55:38 +0000
Subject: Posicion del circulo de acuerdo al valor del slider horizontal

---
diff --git a/example.py b/example.py
index c3ea56b..723003d 100755
--- a/example.py
+++ b/example.py
@@ -2,40 +2,90 @@
 import gtk
 import gobject
 
+DELAY = 20
 
 class MyApp():
-
+    
     def __init__(self):
         window = gtk.Window()
-	vadjustment = gtk.Adjustment(0, 0, 100, 5, 10, 0)
-	hadjustment = gtk.Adjustment(0, 0, 100, 5, 10, 0)
         hbox = gtk.HBox()
         vbox = gtk.VBox()
-        hslide = gtk.HScale(vadjustment)
-        vslide = gtk.VScale(hadjustment)
-
-        drawing_area = gtk.DrawingArea()
-        drawing_area.set_size_request(600, 600)
+        
+        #asignacion de variables a widgest de gtk
+        self.vadjustment = gtk.Adjustment()
+        self.hadjustment = gtk.Adjustment()
+        
+        #asignacion de valores por defecto
+        self.vadjustment.set_upper(100)
+        self.vadjustment.set_value(0)
+        self.hadjustment.set_upper(100)
+        self.hadjustment.set_value(0)
+        
+        #asignacion de propiedades de widgets
+        self.vslide = gtk.VScale(self.vadjustment)
+        self.hslide = gtk.HScale(self.hadjustment)
+        self.vslide.set_digits(0)
+        self.hslide.set_digits(0)
+        
+        #variable global para desplazamiento del slide
+        self.increment = 1
+        #self.changed_value = 0
+        
+        #asignacion de variables a widgest de gtk
+        self.drawing_area = gtk.DrawingArea()
+        self.drawing_area.set_size_request(600, 600)
 
         self.pixbuf = gtk.gdk.pixbuf_new_from_file('images/arco.jpg')
 
         window.connect('destroy', self.destroy)
-        drawing_area.connect('configure_event', self.__configure_cb)
-        drawing_area.connect('expose-event', self.__expose_cb)
-
-        #window.add(drawing_area)
+        self.drawing_area.connect('configure_event', self.__configure_cb)
+        self.drawing_area.connect('expose-event', self.__expose_cb)
+        
+        #eventos de widgets
+        self.hslide.connect('key-press-event', self.__capturar_valor_cb)
+        #self.drawing_area.connect('expose-event', self.__area_expose_cb)
+
+        #a;andiendo widgets dentro del contenedor principal
         window.add(hbox)
         hbox.add(vbox)
-	hbox.add(vslide)
-        vbox.add(drawing_area)
-        vbox.add(hslide)
-
-        window.show()
-        vbox.show()
-        hbox.show()
-        drawing_area.show()
-        vslide.show()
-        hslide.show()
+        vbox.add(self.drawing_area)
+        vbox.add(self.hslide)
+    	hbox.add(self.vslide)
+        
+        #mostrando los widgets
+        window.show_all()
+        
+        #invocacion de la funcion que realiza loop del slider
+        gobject.timeout_add(DELAY, self.__value_changed_cb, self.hslide)
+        
+    #funcion que hace el loop de los valores del slider    
+    def __value_changed_cb(self, hslide):
+        self.hadjustment.value += self.increment
+
+        if self.hadjustment.value >= 100:
+    	    self.increment *= -1
+        elif self.hadjustment.value <= 0:
+    	    self.increment *= -1
+
+        self.hslide = gtk.HScale(self.hadjustment)
+		
+        return True
+        
+    #funcion que captura el valor del slider al pulsar una tecla    
+    def __capturar_valor_cb(self, hslide, event):
+        self.changed_value = hslide.get_value()
+        #valida el estilo del area de dibujo
+        self.style = self.drawing_area.get_style()
+        self.gc = self.style.fg_gc[gtk.STATE_NORMAL]
+        #convierte el valor de changed_value a int
+        self.cv = (((int(self.changed_value)) * 600) / 100)
+        #invoca a la funcion que dibuja la pelota de acuerdo a los valores del slider
+        self.draw_ball(self.cv,self.cv)
+        print self.cv
+    
+    #funcion que dibuja la pelota
+    def draw_ball(self, x, y):
+        self.drawing_area.window.draw_arc(self.gc, False, x, y*0, 70, 70, 0, 360*64)
 
     def destroy(self, window, data=None):
         gtk.main_quit()
--
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