Merge pull request #867 from MikeTheWatchGuy/Dev-latest

new Slider parameter - disable_number_display - turns off the numeric…

PySimpleGUI.py

@@ -459,6 +459,15 @@ class Element():
         if self.ParentForm.CurrentlyRunningMainloop:
             self.ParentForm.TKroot.quit()
 
+    def ClickHandler(self, event):
+        if self.Key is not None:
+            self.ParentForm.LastButtonClicked = self.Key
+        else:
+            self.ParentForm.LastButtonClicked = ''
+        self.ParentForm.FormRemainedOpen = True
+        if self.ParentForm.CurrentlyRunningMainloop:
+            self.ParentForm.TKroot.quit()
+
 
     def __del__(self):
         try:
@@ -1627,7 +1636,7 @@ class ProgressBar(Element):
 # ---------------------------------------------------------------------- #
 class Image(Element):
     def __init__(self, filename=None, data=None, background_color=None, size=(None, None), pad=None, key=None,
-                 tooltip=None, visible=True):
+                 tooltip=None, visible=True, enable_events=False):
         '''
         Image Element
         :param filename:
@@ -1644,6 +1653,8 @@ class Image(Element):
         self.BackgroundColor = background_color
         if data is None and filename is None:
             print('* Warning... no image specified in Image Element! *')
+        self.EnableEvents = enable_events
+
         super().__init__(ELEM_TYPE_IMAGE, size=size, background_color=background_color, pad=pad, key=key,
                          tooltip=tooltip, visible=visible)
         return
@@ -2203,8 +2214,7 @@ class TabGroup(Element):
 #                           Slider                                       #
 # ---------------------------------------------------------------------- #
 class Slider(Element):
-    def __init__(self, range=(None, None), default_value=None, resolution=None, tick_interval=None, orientation=None,
+    def __init__(self, range=(None, None), default_value=None, resolution=None, tick_interval=None, orientation=None, disable_number_display=False, border_width=None, relief=None, change_submits=False, enable_events=False, disabled=False, size=(None, None), font=None, background_color=None, text_color=None, key=None, pad=None, tooltip=None, visible=True):
-                 border_width=None, relief=None, change_submits=False, enable_events=False, disabled=False, size=(None, None), font=None, background_color=None, text_color=None, key=None, pad=None, tooltip=None, visible=True):
         '''
         Slider Element
         :param range:
@@ -2233,6 +2243,7 @@ class Slider(Element):
         self.ChangeSubmits = change_submits or enable_events
         self.Disabled = disabled
         self.TickInterval = tick_interval
+        self.DisableNumericDisplay = disable_number_display
         temp_size = size
         if temp_size == (None, None):
             temp_size = (20, 20) if self.Orientation.startswith('h') else (8, 20)
@@ -4726,6 +4737,9 @@ def PackFormIntoFrame(form, containing_frame, toplevel_form):
                     if element.Tooltip is not None:
                         element.TooltipObject = ToolTip(element.tktext_label, text=element.Tooltip,
                                                         timeout=DEFAULT_TOOLTIP_TIME)
+                    if element.EnableEvents:
+                        element.tktext_label.bind('<ButtonPress-1>', element.ClickHandler)
+
                 # -------------------------  Canvas element  ------------------------- #
             elif element_type == ELEM_TYPE_CANVAS:
                 width, height = element_size
@@ -4914,6 +4928,8 @@ def PackFormIntoFrame(form, containing_frame, toplevel_form):
                     tkscale.configure(background=element.BackgroundColor)
                     if DEFAULT_SCROLLBAR_COLOR != COLOR_SYSTEM_DEFAULT:
                         tkscale.config(troughcolor=DEFAULT_SCROLLBAR_COLOR)
+                if element.DisableNumericDisplay:
+                    tkscale.config(showvalue=0)
                 if text_color is not None and text_color != COLOR_SYSTEM_DEFAULT:
                     tkscale.configure(fg=text_color)
                 tkscale.pack(side=tk.LEFT, padx=element.Pad[0], pady=element.Pad[1])

docs/cookbook.md

@@ -718,6 +718,72 @@ This simple program keep a window open, taking input values until the user termi
             break      
 ```      
       
+ ## One Element Updating  Another
+   
+You can easily build "compound elements" in a single like of code.  This recipe shows you how to add a numeric value onto a slider.
+
+```python
+import PySimpleGUI as sg  
+  
+layout = [[sg.Text('Slider Demonstration'), sg.Text('', key='_OUTPUT_')],  
+            [sg.T('0',key='_LEFT_'),  
+             sg.Slider((1,100), key='_SLIDER_', orientation='h', enable_events=True, disable_number_display=True),  
+             sg.T('0', key='_RIGHT_')],  
+            [sg.Button('Show'), sg.Button('Exit')]]  
+  
+window = sg.Window('Window Title').Layout(layout)  
+  
+while True:             # Event Loop  
+  event, values = window.Read()  
+    print(event, values)  
+    if event is None or event == 'Exit':  
+        break  
+  window.Element('_LEFT_').Update(values['_SLIDER_'])  
+    window.Element('_RIGHT_').Update(values['_SLIDER_'])  
+  
+window.Close()
+```
+
+## Multiple Windows
+
+This recipe is a design pattern for multiple windows where the first window is not active while the second window is showing.  The first window is hidden to discourage continued interaction.
+
+
+```Python
+"""  
+ PySimpleGUI The Complete Course Lesson 7 - Multiple Windows"""  
+import PySimpleGUI as sg  
+  
+# Design pattern 1 - First window does not remain active  
+  
+layout = [[ sg.Text('Window 1'),],  
+          [sg.Input(do_not_clear=True)],  
+          [sg.Text('', key='_OUTPUT_')],  
+          [sg.Button('Launch 2')]]  
+  
+win1 = sg.Window('Window 1').Layout(layout)  
+win2_active=False  
+while True:  
+    ev1, vals1 = win1.Read(timeout=100)  
+    if ev1 is None:  
+        break  
+  win1.FindElement('_OUTPUT_').Update(vals1[0])  
+  
+    if ev1 == 'Launch 2'  and not win2_active:  
+        win2_active = True  
+  win1.Hide()  
+        layout2 = [[sg.Text('Window 2')],       # note must create a layout from scratch every time. No reuse  
+  [sg.Button('Exit')]]  
+  
+        win2 = sg.Window('Window 2').Layout(layout2)  
+        while True:  
+            ev2, vals2 = win2.Read()  
+            if ev2 is None or ev2 == 'Exit':  
+                win2.Close()  
+                win2_active = False  
+  win1.UnHide()  
+                break
+```
    
 ## tkinter Canvas Widget