pyic_view: Using .pack instead of .group to place widgets. Option to update...

pyic_view: Using .pack instead of .group to place widgets. Option to update data range to zoom area.

scripts/pyic_view.py

@@ -108,6 +108,7 @@ class view(object):
         print('setup TKinter')
         root = tk.Tk()
         root.title("pyicon view")
+        root.geometry("1200x800")
 
         self.flist = flist
         self.path_grid = path_grid
@@ -154,6 +155,10 @@ class view(object):
         self.selected_res = tk.StringVar(value="0.3")
         self.selected_proj = tk.StringVar(value="None")
 
+        # Variables to store zoom area
+        self.press_event = None
+        self.rect = None
+
         # Create figure and axis
         self.fig, self.ax, self.cax = generate_axes(asp=0.5)
 
@@ -162,89 +167,122 @@ class view(object):
         #print(self.ax.get_position())
 
         # TK canvas
-        self.canvas = FigureCanvasTkAgg(self.fig, master=root)
-        self.canvas.get_tk_widget().grid(row=0, column=0, columnspan=3)
+        frame_plot = tk.Frame(root)
+        frame_plot.pack(fill="both", expand=True)
+        self.canvas = FigureCanvasTkAgg(self.fig, master=frame_plot)
+        self.canvas.get_tk_widget().pack(fill="both", expand=True)
 
         # Connect the click event to the function
         self.canvas.mpl_connect("button_press_event", self.on_click)
 
-        # Create sliders
+        # --- 1st row
         print('Setup sliders')
-        self.slider_t = tk.Scale(root, from_=0, to=len(self.ds.time)-1, 
-            orient="horizontal", label="time", command=self.update_plot)
-        self.slider_t.grid(row=1, column=0, columnspan=2, sticky="ew")
+        pady_num = 8
+        frame1 = tk.Frame(root)
+        frame1.pack(fill="x", pady=pady_num)
+
+        # time slider
+        btn_dec_t = tk.Button(frame1, text="-", command=lambda: self.decrease_slider(self.slider_t))
+        btn_dec_t.pack(side="left")
+
+        self.slider_t = tk.Scale(frame1, from_=0, to=len(self.ds.time)-1, 
+            orient="horizontal", label="time", command=self.update_data)
+        self.slider_t.pack(side="left", pady=pady_num, ipadx=160)
+
+        btn_inc_t = tk.Button(frame1, text="+", command=lambda: self.increase_slider(self.slider_t))
+        btn_inc_t.pack(side="left")
+
+        # space inbetween
+        spacer = tk.Frame(frame1, width=30)  # 10 pixels wide
+        spacer.pack(side="left")
         
-        self.slider_d = tk.Scale(root, from_=0, to=1,
-            orient="horizontal", label="depth", command=self.update_plot)
-        self.slider_d.grid(row=1, column=2, columnspan=2, sticky="ew")
+        # depth slide
+        btn_dec_d = tk.Button(frame1, text="-", command=lambda: self.decrease_slider(self.slider_d))
+        btn_dec_d.pack(side="left")
+
+        self.slider_d = tk.Scale(frame1, from_=0, to=1,
+            orient="horizontal", label="depth", command=self.update_data)
+        self.slider_d.pack(side="left", pady=pady_num, ipadx=160)
+
+        btn_inc_d = tk.Button(frame1, text="+", command=lambda: self.increase_slider(self.slider_d))
+        btn_inc_d.pack(side="left")
+
+        # --- 2nd row
+        frame2 = tk.Frame(root)
+        frame2.pack(fill="x", pady=pady_num)
         
         # Create dropdown menus
         print('Setup var dropdown')
         var_menu = ttk.Combobox(
-            root, textvariable=self.selected_var, 
+            frame2, textvariable=self.selected_var, 
             values=list(self.ds.data_vars.keys()), state="readonly"
         )
-        var_menu.grid(row=2, column=0)
-        var_menu.bind("<<ComboboxSelected>>", self.update_plot)
+        var_menu.pack(side="left", padx=5)
+        var_menu.bind("<<ComboboxSelected>>", self.update_data)
         
+        # Cmap dropdown
         print('Setup cmap dropdown')
-        cmap_menu = ttk.Combobox(root, textvariable=self.selected_cmap, 
+        cmap_menu = ttk.Combobox(frame2, textvariable=self.selected_cmap, 
             values=self.colormaps, state="readonly")
-        cmap_menu.grid(row=2, column=1)
+        cmap_menu
         cmap_menu.bind("<<ComboboxSelected>>", self.update_cmap)
         
         # Color limit entry
         print('Setup color limits')
-        entry = tk.Entry(root, textvariable=self.color_limits)
-        entry.grid(row=2, column=2)
+        entry = tk.Entry(frame2, textvariable=self.color_limits)
+        entry.pack(side="left", padx=5)
         entry.insert(0, "")  # Default value
         entry.bind("<Return>", self.update_clim)  # Update when pressing Enter
-        
-        # lon_lat_reg entry
-        print('Setup lon_reg')
-        entry = tk.Entry(root, textvariable=self.lon_lat_reg_tk)
-        entry.grid(row=3, column=1)
+
+        # Checkbox for grid display
+        self.do_grid = tk.BooleanVar()
+        self.checkbox = tk.Checkbutton(frame2, text="Show grid", 
+            variable=self.do_grid, command=self.toggle_grid)
+        self.checkbox.pack(side="left", padx=5)
+
+        # save_fig entry
+        entry = tk.Entry(frame2, textvariable=self.save_fig_tk)
+        entry.pack(side="left", padx=5)
         entry.insert(0, "")  # Default value
-        entry.bind("<Return>", self.make_new_axis)  # Update when pressing Enter
+        entry.bind("<Return>", self.save_figure)  # Update when pressing Enter
+
+        # --- 3rd row
+        frame3 = tk.Frame(root)
+        frame3.pack(fill="x", pady=pady_num)
 
         # res entry
         print('Setup res dropdown')
-        res_menu = ttk.Combobox(root, textvariable=self.selected_res, 
+        res_menu = ttk.Combobox(frame3, textvariable=self.selected_res, 
             values=self.res_all, state="readonly")
-        res_menu.grid(row=3, column=0)
+        res_menu.pack(side="left", padx=5)
         res_menu.bind("<<ComboboxSelected>>", self.make_new_axis)
+        
+        # lon_lat_reg entry
+        print('Setup lon_reg')
+        self.entry_lon_lat_reg = tk.Entry(frame3, textvariable=self.lon_lat_reg_tk)
+        self.entry_lon_lat_reg.pack(side="left", padx=5)
+        self.entry_lon_lat_reg.insert(0, "")  # Default value
+        self.entry_lon_lat_reg.bind("<Return>", self.make_new_axis)  # Update when pressing Enter
+
+        # Button to update data range
+        self.update_range_button = ttk.Button(frame3, text="Update data range", 
+            command=self.update_data_range)
+        self.update_range_button.pack(side="left", padx=5)
 
         # Button to activate zoom mode
-        self.zoom_button = ttk.Button(root, text="Enable Zoom", 
+        self.zoom_button = ttk.Button(frame3, text="Enable Zoom", 
             command=self.activate_zoom)
-        self.zoom_button.grid(row=3, column=2)
-
-        # save_fig entry
-        entry = tk.Entry(root, textvariable=self.save_fig_tk)
-        entry.grid(row=4, column=1)
-        entry.insert(0, "")  # Default value
-        entry.bind("<Return>", self.save_figure)  # Update when pressing Enter
-
-        # Variables to store zoom area
-        self.press_event = None
-        self.rect = None
-
-        # Variables to store zoom area
-        self.press_event = None
-        self.rect = None
+        self.zoom_button.pack(side="left", padx=5)
 
         # proj entry
         print('Setup proj dropdown')
-        res_menu = ttk.Combobox(root, textvariable=self.selected_proj, 
+        res_menu = ttk.Combobox(frame3, textvariable=self.selected_proj, 
             values=list(self.proj_dict), state="readonly")
-        res_menu.grid(row=3, column=3)
+        res_menu.pack(side="left", padx=5)
         res_menu.bind("<<ComboboxSelected>>", self.make_new_axis)
 
-        # checkbox for grid display
-        self.do_grid = tk.BooleanVar()
-        self.checkbox = tk.Checkbutton(root, text="Show grid", 
-            variable=self.do_grid, command=self.toggle_grid)
-        self.checkbox.grid(row=2, column=3)
+
+        # --- end tk objects
 
         # initial plot
         self.plot_data()
@@ -407,6 +445,7 @@ class view(object):
             self.ax.set_yticks([])
         self.ax.set_facecolor('0.7')
         self.update_cmap()
+        self.update_clim()
         # set titles
         #self.ht_var = self.ax.set_xlabel('', fontsize=self.font_size)
         self.ht_var = self.cax.set_ylabel('', fontsize=self.font_size)
@@ -452,9 +491,25 @@ class view(object):
 
         self.plot_data()
         self.canvas.draw()
+
+    def update_data_range(self):
+        xlim = self.ax.get_xlim()
+        ylim = self.ax.get_ylim()
+        lon_lat_reg_str = f'{xlim[0]:3g},{xlim[1]:3g},{ylim[0]:3g},{ylim[1]:3g}'
+        print(lon_lat_reg_str)
+        self.lon_lat_reg_tk.set(lon_lat_reg_str)
+        self.make_new_axis()
+
+    def increase_slider(self, slider):
+        slider.set(slider.get() + 1)
+        self.update_data()
+    
+    def decrease_slider(self, slider):
+        slider.set(slider.get() - 1)
+        self.update_data()
     
     # Function to update plot
-    def update_plot(self, *args):
+    def update_data(self, *args):
 
         # Get current slider values
         self.it = int(self.slider_t.get())