* Archivos de prueba.

2 files changed, 201 insertions, 0 deletions

diff --git a/fracciones.py b/fracciones.py
new file mode 100755
index 0000000..fb17db3
--- /dev/null
+++ b/fracciones.py
@@ -0,0 +1,126 @@
+#! /usr/bin/env python
+
+import math
+import gtk
+
+
+W = None
+H = None
+
+def draw_arc(cr, color_fg, color_bg, center_x, center_y, radius, angle_start, angle_end):
+    cr.set_source_rgb(*color_fg)
+    cr.move_to(center_x, center_y)
+    nx = center_x + radius * math.cos(angle_start)
+    ny = center_y + radius * math.sin(angle_start)
+    cr.line_to(nx, ny)
+    cr.arc(center_x, center_y, radius, angle_start, angle_end)
+    cr.close_path()
+    cr.stroke_preserve()
+    cr.set_source_rgb(*color_bg)
+    cr.fill()
+
+
+class Arco:
+    def __init__(self, x, y, r, N):
+        assert N > 2
+        self.x0 = x
+        self.y0 = y
+        self.r = r
+        self.N = N
+        self.selected = [0] * N
+
+
+    def arco(self, pos):
+        xa = pos[0]
+        ya = pos[1]
+        xb = xa - W 
+        yb = (ya - H)
+
+        if math.pow(xb, 2) + math.pow(yb, 2) > math.pow(self.r, 2):
+            return None
+        angle = math.atan2(yb, xb)
+        if angle < 0: angle += 2*math.pi
+        sector2 = angle*self.N/(2*math.pi)
+        return int(math.floor(sector2))
+
+
+    def presionar_arco(self, cr, i):
+        if self.selected[i]:
+            self.selected[i] = 0
+        else:
+            self.selected[i] = 1
+        self.dibujar_torta(cr)
+
+
+    def dibujar_torta(self, cr):
+        for i in xrange(self.N):
+            angle_start = 2*math.pi*i/self.N
+            angle_end = 2*math.pi*(i+1)/self.N
+            #if angle_start < 0:  angle_start += 2*math.pi
+            #if angle_end < 0:  angle_end += 2*math.pi
+            if self.selected[i]:
+                fg = (1.0, 1.0, 0.0)
+                bg = (0.0, 1.0, 1.0)
+            else:
+                fg = (1.0, 0.0, 0.0)
+                bg = (0.0, 1.0, 0.0)
+            draw_arc(cr, fg, bg, self.x0, self.y0, self.r, angle_start, angle_end)
+
+
+
+class fracciones(object):
+    def __init__(self):
+        global W, H
+
+        builder = gtk.Builder()
+        builder.add_from_file("fracciones.xml")
+        builder.connect_signals(self)
+
+        self.builder = builder
+        self.window = builder.get_object("window")
+        self.label = builder.get_object("label")
+        self.status = builder.get_object("statusbar")
+        self.drawingarea = builder.get_object("drawingarea")
+        self.window.show()
+
+        # Crear la torta.
+        self.w = self.drawingarea.allocation.width 
+        self.h = self.drawingarea.allocation.height
+        r = 80
+        self.N = N = 5
+        W = self.w /2.0
+        H = self.h /2.0
+        self.arco = Arco(W, H, r, N)
+        self.coords = (0, 0)
+ 
+
+    def on_window_motion_notify_event(self, widget, event):
+        self.coords = coords = event.get_coords()
+        text = "%i/%i"%(sum(self.arco.selected), self.N)
+        self.status.push(1, text)
+
+        
+    def on_window_destroy(self, userdata):
+        gtk.main_quit()
+
+
+    def on_drawingarea_expose_event(self, widget, event):
+        cr = widget.window.cairo_create()
+        self.arco.dibujar_torta(cr)
+
+
+    def on_drawingarea_button_press_event(self, widget, event):
+        x, y = event.get_coords()
+        result = self.arco.arco(event.get_coords())
+        if result is not None:
+            cr = widget.window.cairo_create()
+        self.arco.presionar_arco(cr, result)
+
+
+    def on_drawingarea_motion_notify_event(self, widget, event):
+        pass
+
+
+if __name__ == "__main__":
+    app = fracciones()
+    gtk.main()
diff --git a/fracciones.xml b/fracciones.xml
new file mode 100644
index 0000000..5112af5
--- /dev/null
+++ b/fracciones.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0"?>
+<interface>
+  <!-- interface-requires gtk+ 2.12 -->
+  <!-- interface-naming-policy toplevel-contextual -->
+  <object class="GtkWindow" id="window">
+    <property name="events">GDK_POINTER_MOTION_MASK | GDK_STRUCTURE_MASK</property>
+    <property name="extension_events">all</property>
+    <property name="window_position">center</property>
+    <signal name="destroy" handler="on_window_destroy"/>
+    <signal name="motion_notify_event" handler="on_window_motion_notify_event"/>
+    <child>
+      <object class="GtkVBox" id="vbox1">
+        <property name="visible">True</property>
+        <property name="orientation">vertical</property>
+        <child>
+          <object class="GtkDrawingArea" id="drawingarea">
+            <property name="width_request">320</property>
+            <property name="height_request">240</property>
+            <property name="visible">True</property>
+            <property name="app_paintable">True</property>
+            <property name="events">GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK | GDK_STRUCTURE_MASK</property>
+            <property name="extension_events">all</property>
+            <signal name="expose_event" handler="on_drawingarea_expose_event"/>
+            <signal name="button_press_event" handler="on_drawingarea_button_press_event"/>
+            <signal name="motion_notify_event" handler="on_drawingarea_motion_notify_event"/>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">False</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkHBox" id="hbox2">
+            <property name="visible">True</property>
+            <child>
+              <object class="GtkStatusbar" id="statusbar">
+                <property name="visible">True</property>
+                <property name="spacing">2</property>
+              </object>
+              <packing>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkAlignment" id="alignment1">
+                <property name="visible">True</property>
+                <property name="xalign">1</property>
+                <property name="yalign">1</property>
+                <property name="xscale">0</property>
+                <property name="yscale">0</property>
+                <child>
+                  <object class="GtkButton" id="button">
+                    <property name="label" translatable="yes">CHECK!</property>
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="receives_default">True</property>
+                  </object>
+                </child>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">False</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="position">1</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>