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modelverse_GUI
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Correctly handle event propagation in TkInter

Yentl Van Tendeloo 8 years ago
parent
cea5b52d4f
commit
81ed31b2f8
4 changed files with 25 additions and 15 deletions
Split View Show Diff Stats
  1. 12 1
      classes/canvas/canvas.xml
  2. 1 1
      classes/window/main_window.xml
  3. 11 2
      frontend.py
  4. 1 11
      sccd_widget.py

+ 12 - 1
classes/canvas/canvas.xml
View File 

@@ -169,6 +169,18 @@
 
                     </onexit>
 
 
                     <state id="drawing">
 
+                        <onentry>
 
+                            <script>
 
+                                print("Drawing")
 
+                            </script>
 
+                        </onentry>
 
+
 
+                        <onexit>
 
+                            <script>
 
+                                print("NOT drawing")
 
+                            </script>
 
+                        </onexit>
 
+
 
                         <transition event="motion" target=".">
 
                             <script>
 
                                 x, y, _, _ = self.coords(self.tmp_line)
 
@@ -185,7 +197,6 @@
 
                                     self.last_y -= 2
 
 
                                 self.coords(self.tmp_line, x, y, self.last_x, self.last_y)
 
-                                pass
 
                             </script>
 
                         </transition>

+ 1 - 1
classes/window/main_window.xml
View File 

@@ -11,7 +11,7 @@
 
     </relationships>
 
 
     <constructor>
 
-        <super class="tk.TopLevel"/>
 
+        <super class="tk.Toplevel"/>
 
         <super class="SCCDWidget"/>
 
         <body>
 
             self.toolbar_frame = tk.Frame(self)

+ 11 - 2
frontend.py
View File 

@@ -1,7 +1,7 @@
 
 """
 
 Generated by Statechart compiler by Glenn De Jonghe, Joeri Exelmans, Simon Van Mierlo, and Yentl Van Tendeloo (for the inspiration)
 
 
-Date:   Mon Oct  9 15:39:54 2017
 
+Date:   Mon Oct  9 16:07:22 2017
 
 
 Model author: Yentl Van Tendeloo
 
 Model name:   Modelverse Visual Editor - Tkinter Version 
@@ -7187,6 +7187,8 @@ class Canvas(RuntimeClassBase, tk.Canvas, SCCDWidget):
 
         
         # state /ready/process_events/creating_line/drawing
 
         self.states["/ready/process_events/creating_line/drawing"] = State(6, "/ready/process_events/creating_line/drawing", self)
 
+        self.states["/ready/process_events/creating_line/drawing"].setEnter(self._ready_process_events_creating_line_drawing_enter)
 
+        self.states["/ready/process_events/creating_line/drawing"].setExit(self._ready_process_events_creating_line_drawing_exit)
 
         
         # state /ready/process_events/creating_line/create_in_mv
 
         self.states["/ready/process_events/creating_line/create_in_mv"] = State(7, "/ready/process_events/creating_line/create_in_mv", self)
 
@@ -7338,6 +7340,12 @@ class Canvas(RuntimeClassBase, tk.Canvas, SCCDWidget):
 
     def _ready_process_events_creating_line_exit(self):
 
         self.delete(self.tmp_line)
 
     
+    def _ready_process_events_creating_line_drawing_enter(self):
 
+        print("Drawing")
 
+    
+    def _ready_process_events_creating_line_drawing_exit(self):
 
+        print("NOT drawing")
 
+    
     def _ready_process_events_creating_element_enter(self):
 
         self.big_step.outputEventOM(Event("broad_cast", None, [self, Event("mv_request", None, ['instantiate', [current_model, self.currently_selected, None, '']])]))
 
         self.elems.append([0, self.create_image(self.last_x, self.last_y, image=self.loading[0])])
 
@@ -7413,6 +7421,8 @@ class Canvas(RuntimeClassBase, tk.Canvas, SCCDWidget):
 
     
     def _ready_process_events_creating_line_drawing_0_exec(self, parameters):
 
         x, y, _, _ = self.coords(self.tmp_line)
 
+        
+        # NOTE: make sure that you can not click on the temporary line itself
 
         if x > self.last_x:
 
             self.last_x += 2
 
         else:
 
@@ -7424,7 +7434,6 @@ class Canvas(RuntimeClassBase, tk.Canvas, SCCDWidget):
 
             self.last_y -= 2
 
         
         self.coords(self.tmp_line, x, y, self.last_x, self.last_y)
 
-        pass
 
     
     def _ready_process_events_creating_line_drawing_1_exec(self, parameters):
 
         ID = parameters[0]

+ 1 - 11
sccd_widget.py
View File 

@@ -51,13 +51,11 @@ class SCCDWidget:
 
     def on_click(self, event):
 
         ''' Prevent event propagation from canvas elements to canvas... '''
 
         if isinstance(self.bindable, tk.Canvas) and self.mytagorid is None:
 
-            print("Click on canvas")
 
             if hasattr(event.widget, 'clicked'):
 
                 if event.widget.clicked:
 
                     event.widget.clicked = False
 
                     return
 
-        else:
 
-            print("Click on not canvas")
 
+        elif isinstance(self.bindable, tk.Canvas):
 
             event.widget.clicked = True
 
 
         event_name = None
 
@@ -75,14 +73,6 @@ class SCCDWidget:
 
         return "break"
 
 
     def on_release(self, event):
 
-        if isinstance(self.bindable, tk.Canvas) and self.mytagorid is None:
 
-            if hasattr(event.widget, 'clicked'):
 
-                if event.widget.clicked:
 
-                    event.widget.clicked = False
 
-                    return
 
-        else:
 
-            event.widget.clicked = True
 
-
 
         event_name = None
 
 
         if event.num == 1: