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+<?xml version="1.0" ?>
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+<diagram author="Simon Van Mierlo" name="Bouncing Balls - Tkinter Version ">
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+ <description>
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+ Tkinter frame with bouncing balls in it.
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+ </description>
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+ <top>
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+ import time
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+ import random
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+ import Tkinter as tk
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+ from mvk_widget import MvKWidget
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+ </top>
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+ <inport name="input"/>
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+ <class name="MainApp" default="true">
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+ <relationships>
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+ <association name="fields" class="Field" />
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+ <inheritance class="RuntimeClassBase" priority='1'/>
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+ <inheritance class="tk.Tk" priority='0'/>
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+ </relationships>
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+ <method name="MainApp">
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+ <body>
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+ tk.Tk.__init__(self)
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+ self.fixed_update_time = 20
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+ self.update_self()
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+ self.withdraw()
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+ self.nr_of_fields = 0
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+ </body>
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+ </method>
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+ <method name="update_self">
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+ <body>
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+ self.controller.update(self.fixed_update_time / 1000.0)
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+ self.schedule_time = time.time()
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+ self.scheduled_update_id = self.after(self.fixed_update_time, self.update_self)
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+ </body>
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+ </method>
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+ <scxml initial="running">
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+ <state id="running" initial="root">
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+ <parallel id="root">
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+ <state id="main_behaviour" initial="initializing">
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+ <state id="initializing">
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+ <transition target="../running">
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+ <raise event="create_field" />
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+ </transition>
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+ </state>
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+ <state id="running">
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+ <transition target='.' event='button_pressed' cond='event_name == "create_new_field"'>
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+ <parameter name="event_name" type="str" />
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+ <raise event="create_field" />
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+ </transition>
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+ </state>
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+ </state>
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+ <state id="cd_behaviour" initial="waiting">
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+ <state id="waiting">
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+ <transition event="create_field" target="../creating">
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+ <raise scope="cd" event="create_instance">
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+ <parameter expr='"fields"' />
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+ </raise>
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+ </transition>
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+ <transition event="delete_field" target='../check_nr_of_fields'>
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+ <parameter name="association_name" type="str"/>
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+ <raise scope="cd" event="delete_instance">
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+ <parameter expr='association_name' />
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+ </raise>
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+ <script>
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+ self.nr_of_fields -= 1
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+ </script>
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+ </transition>
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+ </state>
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+ <state id="creating">
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+ <transition event="instance_created" target="../waiting">
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+ <parameter name="association_name" type="string"/>
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+ <raise scope="cd" event="start_instance">
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+ <parameter expr="association_name" />
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+ </raise>
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+ <raise scope="narrow" event="set_association_name" target="association_name">
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+ <parameter expr="association_name" />
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+ </raise>
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+ <script>
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+ self.nr_of_fields += 1
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+ </script>
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+ </transition>
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+ </state>
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+ <state id="check_nr_of_fields">
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+ <transition target="../../../stopped" cond="self.nr_of_fields == 0">
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+ <script>
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+ self.destroy()
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+ </script>
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+ </transition>
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+ <transition target="../waiting" cond="self.nr_of_fields != 0"/>
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+ </state>
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+ </state>
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+ </parallel>
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+ <state id="stopped" />
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+ </state>
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+ </scxml>
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+ </class>
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+ <class name="Field">
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+ <relationships>
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+ <association name="balls" class="Ball" />
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+ <association name="buttons" class="Button" />
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+ <association name="parent" class="MainApp" min="1" max="1" />
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+ <inheritance class="RuntimeClassBase" priority='1'/>
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+ <inheritance class="tk.Toplevel" priority='0'/>
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+ <inheritance class="MvKWidget" priority='-1'/>
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+ </relationships>
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+ <method name="Field">
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+ <body>
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+ <![CDATA[
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+ tk.Toplevel.__init__(self)
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+ self.title('BouncingBalls')
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+
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+ CANVAS_SIZE_TUPLE = (0, 0, self.winfo_screenwidth() * 2, self.winfo_screenheight() * 2)
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+ self.c = tk.Canvas(self, relief=tk.RIDGE, scrollregion=CANVAS_SIZE_TUPLE)
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+
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+ MvKWidget.__init__(self, self.controller, self.c)
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+ ]]>
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+ </body>
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+ </method>
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+ <method name="~Field">
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+ <body>
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+ self.destroy()
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+ </body>
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+ </method>
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+ <scxml initial="root">
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+ <state id="root" initial="waiting">
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+ <state id="waiting">
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+ <transition event="set_association_name" target="../initializing">
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+ <parameter name="association_name" type="str" />
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+ <script>
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+ self.association_name = association_name
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+ </script>
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+ </transition>
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+ </state>
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+ <state id="initializing">
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+ <transition target="../creating">
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+ <raise scope="cd" event="create_instance">
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+ <parameter expr='"buttons"' />
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+ <parameter expr="self" />
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+ <parameter expr="'create_new_field'" />
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+ <parameter expr="'Spawn New Window'" />
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+ </raise>
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+ </transition>
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+ </state>
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+ <state id="creating">
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+ <transition event='instance_created' target='../packing'>
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+ <parameter name="association_name" type="string"/>
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+ <raise scope="cd" event="start_instance">
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+ <parameter expr="association_name" />
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+ </raise>
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+ </transition>
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+ </state>
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+ <state id="packing">
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+ <transition event="button_created" target='../running'>
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+ <parameter name="button" type="Button"/>
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+ <script>
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+ button.pack(expand=False, fill=tk.X, side=tk.TOP)
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+ self.c.focus_force()
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+ self.c.pack(expand=True, fill=tk.BOTH)
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+ </script>
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+ </transition>
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+ </state>
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+ <parallel id="running">
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+ <transition port="input" event="window-close" target="../deleting" cond='tagorid == id(self)'>
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+ <parameter name="tagorid" type="int" default='None' />
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+ <raise scope="narrow" target="'balls'" event='delete_self' />
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+ </transition>
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+ <state id="main_behaviour" initial="running">
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+ <state id="running">
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+ <transition port="input" event="right-click" target="../creating" cond='tagorid == id(self)'>
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+ <parameter name='tagorid' type='int' default='None' />
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+ <raise scope="cd" event="create_instance">
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+ <parameter expr='"balls"' />
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+ <parameter expr="self.c" />
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+ <parameter expr="self.last_x" />
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+ <parameter expr="self.last_y" />
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+ </raise>
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+ </transition>
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+ </state>
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+ <state id="creating">
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+ <transition event="instance_created" target="../running">
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+ <parameter name="association_name" type="string"/>
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+ <raise scope="cd" event="start_instance">
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+ <parameter expr="association_name" />
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+ </raise>
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+ <raise scope="narrow" event="set_association_name" target="association_name">
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+ <parameter expr="association_name" />
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+ </raise>
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+ </transition>
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+ </state>
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+ </state>
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+ <state id="deleting_behaviour" initial="running">
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+ <state id="running">
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+ <transition event="delete_ball" target='.'>
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+ <parameter name="association_name" type="str"/>
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+ <raise scope="cd" event="delete_instance">
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+ <parameter expr='association_name' />
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+ </raise>
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+ </transition>
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+ </state>
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+ </state>
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+ <state id="child_behaviour" initial="listening">
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+ <state id="listening">
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+ <transition event="button_pressed" target='.'>
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+ <parameter name="event_name" type="str" />
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+ <raise event="button_pressed" scope="narrow" target="'parent'">
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+ <parameter expr='event_name' />
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+ </raise>
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+ </transition>
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+ </state>
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+ </state>
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+ </parallel>
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+ <state id="deleting">
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+ <transition after="0.05" target="../deleted">
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+ <raise event="delete_field" scope="narrow" target="'parent'">
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+ <parameter expr='self.association_name' />
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+ </raise>
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+ </transition>
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+ </state>
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+ <state id="deleted" />
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+ </state>
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+ </scxml>
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+ </class>
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+ <class name="Button">
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+ <relationships>
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+ <association name="parent" class="Field" min="1" max="1" />
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+ <inheritance class="RuntimeClassBase" priority='1'/>
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+ <inheritance class="MvKWidget" priority='0'/>
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+ <inheritance class="tk.Button" priority='-1'/>
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+ </relationships>
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+ <method name="Button">
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+ <parameter name="parent" type="Field" />
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+ <parameter name="event_name" type="str" />
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+ <parameter name="button_text" type="str" />
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+ <body>
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+ tk.Button.__init__(self, parent, text=button_text)
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+ MvKWidget.__init__(self, self.controller)
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+ self.event_name = event_name
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+ </body>
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+ </method>
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+ <scxml initial="initializing">
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+ <state id="initializing">
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+ <transition target="../running">
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+ <raise event="button_created" scope="narrow" target="'parent'">
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+ <parameter expr="self" />
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+ </raise>
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+ </transition>
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+ </state>
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+ <state id="running">
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+ <transition port='input' event="left-click" target='.' cond='tagorid == id(self)'>
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+ <parameter name='tagorid' type='int' default='None' />
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+ <raise event="button_pressed" scope="narrow" target="'parent'">
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+ <parameter expr="self.event_name" />
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+ </raise>
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+ </transition>
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+ </state>
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+ </scxml>
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+ </class>
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+ <class name="Ball">
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+ <relationships>
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+ <association name="parent" class="Field" min="1" max="1" />
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+ <inheritance class="RuntimeClassBase" priority='1'/>
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+ <inheritance class="MvKWidget" priority='0'/>
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+ </relationships>
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+ <attribute name="canvas" />
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+ <method name="Ball">
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+ <parameter name="canvas" />
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+ <parameter name="x" />
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+ <parameter name="y" />
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+ <body>
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+ self.canvas = canvas
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+ self.r = 15.0
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+ self.smooth = 0.4 # value between 0 and 1
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+ self.vel = {'x': random.random() * 2.0 - 1.0, 'y': random.random() * 2.0 - 1.0}
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+ self.id = self.canvas.create_oval(x, y, x + (self.r * 2), y + (self.r * 2), fill="black")
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+ MvKWidget.__init__(self, self.controller, self.canvas, self.id)
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+ </body>
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+ </method>
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+ <method name="~Ball">
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+ <body>
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+ self.canvas.delete(self.id)
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+ </body>
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+ </method>
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+ <scxml initial="main_behaviour">
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+ <state id="main_behaviour" initial="initializing">
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+ <state id="initializing">
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+ <transition event="set_association_name" target="../bouncing">
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+ <parameter name="association_name" type="str" />
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+ <script>
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+ self.association_name = association_name
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+ </script>
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+ </transition>
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+ </state>
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+ <state id="bouncing">
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+ <transition after="0.01" target=".">
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+ <script>
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+ <![CDATA[
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+ pos = self.canvas.coords(self.id)
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+ x = self.canvas.canvasx(pos[0])
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+ y = self.canvas.canvasy(pos[1])
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+ if x <= 0 or x + (self.r * 2) >= self.canvas.canvasx(self.canvas.winfo_width()):
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+ self.vel['x'] = -self.vel['x']
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+ if y <= 0 or y + (self.r * 2) >= self.canvas.canvasy(self.canvas.winfo_height()):
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+ self.vel['y'] = -self.vel['y']
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+ self.canvas.move(self.id, self.vel['x'], self.vel['y']);
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+ ]]>
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+ </script>
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+ </transition>
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+ <transition port="input" event="left-click" target="../selected" cond='tagorid == id(self)'>
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+ <parameter name='tagorid' type='int' default='None' />
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+ <script>
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+ self.canvas.itemconfig(self.id, fill="yellow")
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+ </script>
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+ </transition>
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+ </state>
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+ <state id="dragging">
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+ <transition port="input" event="motion" target=".">
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+ <parameter name='tagorid' type='int' default='None' />
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+ <script>
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+ <![CDATA[
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+ coords = self.canvas.coords(self.id)
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+ dx = self.canvas.canvasx(self.last_x) - self.canvas.canvasx(coords[0])
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+ dy = self.canvas.canvasx(self.last_y) - self.canvas.canvasy(coords[1])
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+
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+ self.canvas.move(self.id, dx, dy);
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+
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+ # keep ball within boundaries
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+ coords = self.canvas.coords(self.id)
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+ x = self.canvas.canvasx(coords[0])
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+ y = self.canvas.canvasy(coords[1])
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+ if x - self.r <= 0:
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+ x = 1;
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+ elif x + self.r >= self.canvas.winfo_width():
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+ x = self.canvas.winfo_width() - (2 * self.r) - 1
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+ if y - self.r <= 0:
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+ y = 1
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+ elif y + self.r >= self.canvas.winfo_height():
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+ y = self.canvas.winfo_height() - (2 * self.r) - 1;
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+ self.canvas.coords(self.id, x, y, x + (self.r * 2), y + (self.r * 2));
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+ self.vel = {
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+ 'x': (1 - self.smooth) * dx + self.smooth * self.vel['x'],
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+ 'y': (1 - self.smooth) * dy + self.smooth * self.vel['y']
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+ }
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+ ]]>
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+ </script>
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+ </transition>
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+ <transition port="input" event="left-release" target="../bouncing">
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+ <parameter name='tagorid' type='int' default='None' />
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+ <script>
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+ self.canvas.itemconfig(self.id, fill="red")
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+ </script>
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+ </transition>
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+ </state>
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+ <state id='selected'>
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+ <transition port="input" event="left-click" target="../dragging" cond='tagorid == id(self)'>
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+ <parameter name='tagorid' type='int' default='None' />
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+ </transition>
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+ <transition port="input" event="delete" target=".">
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+ <parameter name='tagorid' type='int' default='None' />
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+ <raise event="delete_self" scope="local" />
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+ </transition>
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+ </state>
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+ <transition event="delete_self" target='../deleted'>
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+ <raise event="delete_ball" scope="narrow" target="'parent'">
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+ <parameter expr='self.association_name' />
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+ </raise>
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+ </transition>
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+ </state>
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+ <state id='deleted' />
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+ </scxml>
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+ </class>
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+</diagram>
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sampieters