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_backend_tk.py
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from contextlib import contextmanager import logging import math import os.path import sys import tkinter as tk from tkinter.simpledialog import SimpleDialog import tkinter.filedialog import tkinter.messagebox import numpy as np import matplotlib as mpl from matplotlib import backend_tools, cbook from matplotlib.backend_bases import ( _Backend, FigureCanvasBase, FigureManagerBase, NavigationToolbar2, StatusbarBase, TimerBase, ToolContainerBase, cursors, _Mode) from matplotlib._pylab_helpers import Gcf from matplotlib.figure import Figure from matplotlib.widgets import SubplotTool from . import _tkagg try: from ._tkagg import Win32_GetForegroundWindow, Win32_SetForegroundWindow except ImportError: @contextmanager def _restore_foreground_window_at_end(): yield else: @contextmanager def _restore_foreground_window_at_end(): foreground = Win32_GetForegroundWindow() try: yield finally: if mpl.rcParams['tk.window_focus']: Win32_SetForegroundWindow(foreground) _log = logging.getLogger(__name__) backend_version = tk.TkVersion cursord = { cursors.MOVE: "fleur", cursors.HAND: "hand2", cursors.POINTER: "arrow", cursors.SELECT_REGION: "tcross", cursors.WAIT: "watch", } def blit(photoimage, aggimage, offsets, bbox=None): """ Blit *aggimage* to *photoimage*. *offsets* is a tuple describing how to fill the ``offset`` field of the ``Tk_PhotoImageBlock`` struct: it should be (0, 1, 2, 3) for RGBA8888 data, (2, 1, 0, 3) for little-endian ARBG32 (i.e. GBRA8888) data and (1, 2, 3, 0) for big-endian ARGB32 (i.e. ARGB8888) data. If *bbox* is passed, it defines the region that gets blitted. """ data = np.asarray(aggimage) height, width = data.shape[:2] dataptr = (height, width, data.ctypes.data) if bbox is not None: (x1, y1), (x2, y2) = bbox.__array__() x1 = max(math.floor(x1), 0) x2 = min(math.ceil(x2), width) y1 = max(math.floor(y1), 0) y2 = min(math.ceil(y2), height) bboxptr = (x1, x2, y1, y2) else: photoimage.blank() bboxptr = (0, width, 0, height) _tkagg.blit( photoimage.tk.interpaddr(), str(photoimage), dataptr, offsets, bboxptr) class TimerTk(TimerBase): """Subclass of `backend_bases.TimerBase` using Tk timer events.""" def __init__(self, parent, *args, **kwargs): self._timer = None TimerBase.__init__(self, *args, **kwargs) self.parent = parent def _timer_start(self): self._timer_stop() self._timer = self.parent.after(self._interval, self._on_timer) def _timer_stop(self): if self._timer is not None: self.parent.after_cancel(self._timer) self._timer = None def _on_timer(self): TimerBase._on_timer(self) # Tk after() is only a single shot, so we need to add code here to # reset the timer if we're not operating in single shot mode. However, # if _timer is None, this means that _timer_stop has been called; so # don't recreate the timer in that case. if not self._single and self._timer: self._timer = self.parent.after(self._interval, self._on_timer) else: self._timer = None class FigureCanvasTk(FigureCanvasBase): required_interactive_framework = "tk" keyvald = {65507: 'control', 65505: 'shift', 65513: 'alt', 65515: 'super', 65508: 'control', 65506: 'shift', 65514: 'alt', 65361: 'left', 65362: 'up', 65363: 'right', 65364: 'down', 65307: 'escape', 65470: 'f1', 65471: 'f2', 65472: 'f3', 65473: 'f4', 65474: 'f5', 65475: 'f6', 65476: 'f7', 65477: 'f8', 65478: 'f9', 65479: 'f10', 65480: 'f11', 65481: 'f12', 65300: 'scroll_lock', 65299: 'break', 65288: 'backspace', 65293: 'enter', 65379: 'insert', 65535: 'delete', 65360: 'home', 65367: 'end', 65365: 'pageup', 65366: 'pagedown', 65438: '0', 65436: '1', 65433: '2', 65435: '3', 65430: '4', 65437: '5', 65432: '6', 65429: '7', 65431: '8', 65434: '9', 65451: '+', 65453: '-', 65450: '*', 65455: '/', 65439: 'dec', 65421: 'enter', } _keycode_lookup = { 262145: 'control', 524320: 'alt', 524352: 'alt', 1048584: 'super', 1048592: 'super', 131074: 'shift', 131076: 'shift', } """_keycode_lookup is used for badly mapped (i.e. no event.key_sym set) keys on apple keyboards.""" def __init__(self, figure, master=None, resize_callback=None): super(FigureCanvasTk, self).__init__(figure) self._idle = True self._idle_callback = None w, h = self.figure.bbox.size.astype(int) self._tkcanvas = tk.Canvas( master=master, background="white", width=w, height=h, borderwidth=0, highlightthickness=0) self._tkphoto = tk.PhotoImage( master=self._tkcanvas, width=w, height=h) self._tkcanvas.create_image(w//2, h//2, image=self._tkphoto) self._resize_callback = resize_callback self._tkcanvas.bind("<Configure>", self.resize) self._tkcanvas.bind("<Key>", self.key_press) self._tkcanvas.bind("<Motion>", self.motion_notify_event) self._tkcanvas.bind("<Enter>", self.enter_notify_event) self._tkcanvas.bind("<Leave>", self.leave_notify_event) self._tkcanvas.bind("<KeyRelease>", self.key_release) for name in ["<Button-1>", "<Button-2>", "<Button-3>"]: self._tkcanvas.bind(name, self.button_press_event) for name in [ "<Double-Button-1>", "<Double-Button-2>", "<Double-Button-3>"]: self._tkcanvas.bind(name, self.button_dblclick_event) for name in [ "<ButtonRelease-1>", "<ButtonRelease-2>", "<ButtonRelease-3>"]: self._tkcanvas.bind(name, self.button_release_event) # Mouse wheel on Linux generates button 4/5 events for name in "<Button-4>", "<Button-5>": self._tkcanvas.bind(name, self.scroll_event) # Mouse wheel for windows goes to the window with the focus. # Since the canvas won't usually have the focus, bind the # event to the window containing the canvas instead. # See http://wiki.tcl.tk/3893 (mousewheel) for details root = self._tkcanvas.winfo_toplevel() root.bind("<MouseWheel>", self.scroll_event_windows, "+") # Can't get destroy events by binding to _tkcanvas. Therefore, bind # to the window and filter. def filter_destroy(event): if event.widget is self._tkcanvas: self._master.update_idletasks() self.close_event() root.bind("<Destroy>", filter_destroy, "+") self._master = master self._tkcanvas.focus_set() def resize(self, event): width, height = event.width, event.height if self._resize_callback is not None: self._resize_callback(event) # compute desired figure size in inches dpival = self.figure.dpi winch = width / dpival hinch = height / dpival self.figure.set_size_inches(winch, hinch, forward=False) self._tkcanvas.delete(self._tkphoto) self._tkphoto = tk.PhotoImage( master=self._tkcanvas, width=int(width), height=int(height)) self._tkcanvas.create_image( int(width / 2), int(height / 2), image=self._tkphoto) self.resize_event() self.draw() def draw_idle(self): # docstring inherited if not self._idle: return self._idle = False def idle_draw(*args): try: self.draw() finally: self._idle = True self._idle_callback = self._tkcanvas.after_idle(idle_draw) def get_tk_widget(self): """ Return the Tk widget used to implement FigureCanvasTkAgg. Although the initial implementation uses a Tk canvas, this routine is intended to hide that fact. """ return self._tkcanvas def motion_notify_event(self, event): x = event.x # flipy so y=0 is bottom of canvas y = self.figure.bbox.height - event.y FigureCanvasBase.motion_notify_event(self, x, y, guiEvent=event) def enter_notify_event(self, event): x = event.x # flipy so y=0 is bottom of canvas y = self.figure.bbox.height - event.y FigureCanvasBase.enter_notify_event(self, guiEvent=event, xy=(x, y)) def button_press_event(self, event, dblclick=False): x = event.x # flipy so y=0 is bottom of canvas y = self.figure.bbox.height - event.y num = getattr(event, 'num', None) if sys.platform == 'darwin': # 2 and 3 were reversed on the OSX platform I tested under tkagg. if num == 2: num = 3 elif num == 3: num = 2 FigureCanvasBase.button_press_event( self, x, y, num, dblclick=dblclick, guiEvent=event) def button_dblclick_event(self, event): self.button_press_event(event, dblclick=True) def button_release_event(self, event): x = event.x # flipy so y=0 is bottom of canvas y = self.figure.bbox.height - event.y num = getattr(event, 'num', None) if sys.platform == 'darwin': # 2 and 3 were reversed on the OSX platform I tested under tkagg. if num == 2: num = 3 elif num == 3: num = 2 FigureCanvasBase.button_release_event(self, x, y, num, guiEvent=event) def scroll_event(self, event): x = event.x y = self.figure.bbox.height - event.y num = getattr(event, 'num', None) step = 1 if num == 4 else -1 if num == 5 else 0 FigureCanvasBase.scroll_event(self, x, y, step, guiEvent=event) def scroll_event_windows(self, event): """MouseWheel event processor""" # need to find the window that contains the mouse w = event.widget.winfo_containing(event.x_root, event.y_root) if w == self._tkcanvas: x = event.x_root - w.winfo_rootx() y = event.y_root - w.winfo_rooty() y = self.figure.bbox.height - y step = event.delta/120. FigureCanvasBase.scroll_event(self, x, y, step, guiEvent=event) def _get_key(self, event): val = event.keysym_num if val in self.keyvald: key = self.keyvald[val] elif (val == 0 and sys.platform == 'darwin' and event.keycode in self._keycode_lookup): key = self._keycode_lookup[event.keycode] elif val < 256: key = chr(val) else: key = None # add modifier keys to the key string. Bit details originate from # http://effbot.org/tkinterbook/tkinter-events-and-bindings.htm # BIT_SHIFT = 0x001; BIT_CAPSLOCK = 0x002; BIT_CONTROL = 0x004; # BIT_LEFT_ALT = 0x008; BIT_NUMLOCK = 0x010; BIT_RIGHT_ALT = 0x080; # BIT_MB_1 = 0x100; BIT_MB_2 = 0x200; BIT_MB_3 = 0x400; # In general, the modifier key is excluded from the modifier flag, # however this is not the case on "darwin", so double check that # we aren't adding repeat modifier flags to a modifier key. if sys.platform == 'win32': modifiers = [(17, 'alt', 'alt'), (2, 'ctrl', 'control'), ] elif sys.platform == 'darwin': modifiers = [(3, 'super', 'super'), (4, 'alt', 'alt'), (2, 'ctrl', 'control'), ] else: modifiers = [(6, 'super', 'super'), (3, 'alt', 'alt'), (2, 'ctrl', 'control'), ] if key is not None: # shift is not added to the keys as this is already accounted for for bitmask, prefix, key_name in modifiers: if event.state & (1 << bitmask) and key_name not in key: key = '{0}+{1}'.format(prefix, key) return key def key_press(self, event): key = self._get_key(event) FigureCanvasBase.key_press_event(self, key, guiEvent=event) def key_release(self, event): key = self._get_key(event) FigureCanvasBase.key_release_event(self, key, guiEvent=event) def new_timer(self, *args, **kwargs): # docstring inherited return TimerTk(self._tkcanvas, *args, **kwargs) def flush_events(self): # docstring inherited self._master.update() class FigureManagerTk(FigureManagerBase): """ Attributes ---------- canvas : `FigureCanvas` The FigureCanvas instance num : int or str The Figure number toolbar : tk.Toolbar The tk.Toolbar window : tk.Window The tk.Window """ def __init__(self, canvas, num, window): FigureManagerBase.__init__(self, canvas, num) self.window = window self.window.withdraw() self.set_window_title("Figure %d" % num) # packing toolbar first, because if space is getting low, last packed # widget is getting shrunk first (-> the canvas) self.toolbar = self._get_toolbar() self.canvas._tkcanvas.pack(side=tk.TOP, fill=tk.BOTH, expand=1) if self.toolmanager: backend_tools.add_tools_to_manager(self.toolmanager) if self.toolbar: backend_tools.add_tools_to_container(self.toolbar) self._shown = False def _get_toolbar(self): if mpl.rcParams['toolbar'] == 'toolbar2': toolbar = NavigationToolbar2Tk(self.canvas, self.window) elif mpl.rcParams['toolbar'] == 'toolmanager': toolbar = ToolbarTk(self.toolmanager, self.window) else: toolbar = None return toolbar def resize(self, width, height): max_size = 1_400_000 # the measured max on xorg 1.20.8 was 1_409_023 if (width > max_size or height > max_size) and sys.platform == 'linux': raise ValueError( 'You have requested to resize the ' f'Tk window to ({width}, {height}), one of which ' f'is bigger than {max_size}. At larger sizes xorg will ' 'either exit with an error on newer versions (~1.20) or ' 'cause corruption on older version (~1.19). We ' 'do not expect a window over a million pixel wide or tall ' 'to be intended behavior.') self.canvas._tkcanvas.configure(width=width, height=height) def show(self): with _restore_foreground_window_at_end(): if not self._shown: def destroy(*args): self.window = None Gcf.destroy(self) self.canvas._tkcanvas.bind("<Destroy>", destroy) self.window.deiconify() else: self.canvas.draw_idle() if mpl.rcParams['figure.raise_window']: self.canvas.manager.window.attributes('-topmost', 1) self.canvas.manager.window.attributes('-topmost', 0) self._shown = True def destroy(self, *args): if self.window is not None: #self.toolbar.destroy() if self.canvas._idle_callback: self.canvas._tkcanvas.after_cancel(self.canvas._idle_callback) self.window.destroy() if Gcf.get_num_fig_managers() == 0: if self.window is not None: self.window.quit() self.window = None def get_window_title(self): return self.window.wm_title() def set_window_title(self, title): self.window.wm_title(title) def full_screen_toggle(self): is_fullscreen = bool(self.window.attributes('-fullscreen')) self.window.attributes('-fullscreen', not is_fullscreen) class NavigationToolbar2Tk(NavigationToolbar2, tk.Frame): """ Attributes ---------- canvas : `FigureCanvas` The figure canvas on which to operate. win : tk.Window The tk.Window which owns this toolbar. pack_toolbar : bool, default: True If True, add the toolbar to the parent's pack manager's packing list during initialization with ``side='bottom'`` and ``fill='x'``. If you want to use the toolbar with a different layout manager, use ``pack_toolbar=False``. """ def __init__(self, canvas, window, *, pack_toolbar=True): # Avoid using self.window (prefer self.canvas.get_tk_widget().master), # so that Tool implementations can reuse the methods. self.window = window tk.Frame.__init__(self, master=window, borderwidth=2, width=int(canvas.figure.bbox.width), height=50) self._buttons = {} for text, tooltip_text, image_file, callback in self.toolitems: if text is None: # Add a spacer; return value is unused. self._Spacer() else: self._buttons[text] = button = self._Button( text, str(cbook._get_data_path(f"images/{image_file}.gif")), toggle=callback in ["zoom", "pan"], command=getattr(self, callback), ) if tooltip_text is not None: ToolTip.createToolTip(button, tooltip_text) # This filler item ensures the toolbar is always at least two text # lines high. Otherwise the canvas gets redrawn as the mouse hovers # over images because those use two-line messages which resize the # toolbar. label = tk.Label(master=self, text='\N{NO-BREAK SPACE}\n\N{NO-BREAK SPACE}') label.pack(side=tk.RIGHT) self.message = tk.StringVar(master=self) self._message_label = tk.Label(master=self, textvariable=self.message) self._message_label.pack(side=tk.RIGHT) NavigationToolbar2.__init__(self, canvas) if pack_toolbar: self.pack(side=tk.BOTTOM, fill=tk.X) def destroy(self, *args): del self.message tk.Frame.destroy(self, *args) def _update_buttons_checked(self): # sync button checkstates to match active mode for text, mode in [('Zoom', _Mode.ZOOM), ('Pan', _Mode.PAN)]: if text in self._buttons: if self.mode == mode: self._buttons[text].select() # NOT .invoke() else: self._buttons[text].deselect() def pan(self, *args): super().pan(*args) self._update_buttons_checked() def zoom(self, *args): super().zoom(*args) self._update_buttons_checked() def set_message(self, s): self.message.set(s) def draw_rubberband(self, event, x0, y0, x1, y1): height = self.canvas.figure.bbox.height y0 = height - y0 y1 = height - y1 if hasattr(self, "lastrect"): self.canvas._tkcanvas.delete(self.lastrect) self.lastrect = self.canvas._tkcanvas.create_rectangle(x0, y0, x1, y1) def release_zoom(self, event): super().release_zoom(event) if hasattr(self, "lastrect"): self.canvas._tkcanvas.delete(self.lastrect) del self.lastrect def set_cursor(self, cursor): window = self.canvas.get_tk_widget().master try: window.configure(cursor=cursord[cursor]) except tkinter.TclError: pass else: window.update_idletasks() def _Button(self, text, image_file, toggle, command): image = (tk.PhotoImage(master=self, file=image_file) if image_file is not None else None) if not toggle: b = tk.Button(master=self, text=text, image=image, command=command) else: # There is a bug in tkinter included in some python 3.6 versions # that without this variable, produces a "visual" toggling of # other near checkbuttons # https://bugs.python.org/issue29402 # https://bugs.python.org/issue25684 var = tk.IntVar(master=self) b = tk.Checkbutton( master=self, text=text, image=image, command=command, indicatoron=False, variable=var) b.var = var b._ntimage = image b.pack(side=tk.LEFT) return b def _Spacer(self): # Buttons are 30px high. Make this 26px tall +2px padding to center it. s = tk.Frame( master=self, height=26, relief=tk.RIDGE, pady=2, bg="DarkGray") s.pack(side=tk.LEFT, padx=5) return s def configure_subplots(self): toolfig = Figure(figsize=(6, 3)) window = tk.Toplevel() canvas = type(self.canvas)(toolfig, master=window) toolfig.subplots_adjust(top=0.9) canvas.tool = SubplotTool(self.canvas.figure, toolfig) canvas.draw() canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1) window.grab_set() def save_figure(self, *args): filetypes = self.canvas.get_supported_filetypes().copy() default_filetype = self.canvas.get_default_filetype() # Tk doesn't provide a way to choose a default filetype, # so we just have to put it first default_filetype_name = filetypes.pop(default_filetype) sorted_filetypes = ([(default_filetype, default_filetype_name)] + sorted(filetypes.items())) tk_filetypes = [(name, '*.%s' % ext) for ext, name in sorted_filetypes] # adding a default extension seems to break the # asksaveasfilename dialog when you choose various save types # from the dropdown. Passing in the empty string seems to # work - JDH! #defaultextension = self.canvas.get_default_filetype() defaultextension = '' initialdir = os.path.expanduser(mpl.rcParams['savefig.directory']) initialfile = self.canvas.get_default_filename() fname = tkinter.filedialog.asksaveasfilename( master=self.canvas.get_tk_widget().master, title='Save the figure', filetypes=tk_filetypes, defaultextension=defaultextension, initialdir=initialdir, initialfile=initialfile, ) if fname in ["", ()]: return # Save dir for next time, unless empty str (i.e., use cwd). if initialdir != "": mpl.rcParams['savefig.directory'] = ( os.path.dirname(str(fname))) try: # This method will handle the delegation to the correct type self.canvas.figure.savefig(fname) except Exception as e: tkinter.messagebox.showerror("Error saving file", str(e)) def set_history_buttons(self): state_map = {True: tk.NORMAL, False: tk.DISABLED} can_back = self._nav_stack._pos > 0 can_forward = self._nav_stack._pos < len(self._nav_stack._elements) - 1 if "Back" in self._buttons: self._buttons['Back']['state'] = state_map[can_back] if "Forward" in self._buttons: self._buttons['Forward']['state'] = state_map[can_forward] class ToolTip: """ Tooltip recipe from http://www.voidspace.org.uk/python/weblog/arch_d7_2006_07_01.shtml#e387 """ @staticmethod def createToolTip(widget, text): toolTip = ToolTip(widget) def enter(event): toolTip.showtip(text) def leave(event): toolTip.hidetip() widget.bind('<Enter>', enter) widget.bind('<Leave>', leave) def __init__(self, widget): self.widget = widget self.tipwindow = None self.id = None self.x = self.y = 0 def showtip(self, text): """Display text in tooltip window.""" self.text = text if self.tipwindow or not self.text: return x, y, _, _ = self.widget.bbox("insert") x = x + self.widget.winfo_rootx() + 27 y = y + self.widget.winfo_rooty() self.tipwindow = tw = tk.Toplevel(self.widget) tw.wm_overrideredirect(1) tw.wm_geometry("+%d+%d" % (x, y)) try: # For Mac OS tw.tk.call("::tk::unsupported::MacWindowStyle", "style", tw._w, "help", "noActivates") except tk.TclError: pass label = tk.Label(tw, text=self.text, justify=tk.LEFT, relief=tk.SOLID, borderwidth=1) label.pack(ipadx=1) def hidetip(self): tw = self.tipwindow self.tipwindow = None if tw: tw.destroy() class RubberbandTk(backend_tools.RubberbandBase): def draw_rubberband(self, x0, y0, x1, y1): height = self.figure.canvas.figure.bbox.height y0 = height - y0 y1 = height - y1 if hasattr(self, "lastrect"): self.figure.canvas._tkcanvas.delete(self.lastrect) self.lastrect = self.figure.canvas._tkcanvas.create_rectangle( x0, y0, x1, y1) def remove_rubberband(self): if hasattr(self, "lastrect"): self.figure.canvas._tkcanvas.delete(self.lastrect) del self.lastrect class SetCursorTk(backend_tools.SetCursorBase): def set_cursor(self, cursor): NavigationToolbar2Tk.set_cursor( self._make_classic_style_pseudo_toolbar(), cursor) class ToolbarTk(ToolContainerBase, tk.Frame): _icon_extension = '.gif' def __init__(self, toolmanager, window): ToolContainerBase.__init__(self, toolmanager) xmin, xmax = self.toolmanager.canvas.figure.bbox.intervalx height, width = 50, xmax - xmin tk.Frame.__init__(self, master=window, width=int(width), height=int(height), borderwidth=2) self._message = tk.StringVar(master=self) self._message_label = tk.Label(master=self, textvariable=self._message) self._message_label.pack(side=tk.RIGHT) self._toolitems = {} self.pack(side=tk.TOP, fill=tk.X) self._groups = {} def add_toolitem( self, name, group, position, image_file, description, toggle): frame = self._get_groupframe(group) button = NavigationToolbar2Tk._Button(self, name, image_file, toggle, lambda: self._button_click(name)) if description is not None: ToolTip.createToolTip(button, description) self._toolitems.setdefault(name, []) self._toolitems[name].append(button) def _get_groupframe(self, group): if group not in self._groups: if self._groups: self._add_separator() frame = tk.Frame(master=self, borderwidth=0) frame.pack(side=tk.LEFT, fill=tk.Y) self._groups[group] = frame return self._groups[group] def _add_separator(self): separator = tk.Frame(master=self, bd=5, width=1, bg='black') separator.pack(side=tk.LEFT, fill=tk.Y, padx=2) def _button_click(self, name): self.trigger_tool(name) def toggle_toolitem(self, name, toggled): if name not in self._toolitems: return for toolitem in self._toolitems[name]: if toggled: toolitem.select() else: toolitem.deselect() def remove_toolitem(self, name): for toolitem in self._toolitems[name]: toolitem.pack_forget() del self._toolitems[name] def set_message(self, s): self._message.set(s) @cbook.deprecated("3.3") class StatusbarTk(StatusbarBase, tk.Frame): def __init__(self, window, *args, **kwargs): StatusbarBase.__init__(self, *args, **kwargs) xmin, xmax = self.toolmanager.canvas.figure.bbox.intervalx height, width = 50, xmax - xmin tk.Frame.__init__(self, master=window, width=int(width), height=int(height), borderwidth=2) self._message = tk.StringVar(master=self) self._message_label = tk.Label(master=self, textvariable=self._message) self._message_label.pack(side=tk.RIGHT) self.pack(side=tk.TOP, fill=tk.X) def set_message(self, s): self._message.set(s) class SaveFigureTk(backend_tools.SaveFigureBase): def trigger(self, *args): NavigationToolbar2Tk.save_figure( self._make_classic_style_pseudo_toolbar()) class ConfigureSubplotsTk(backend_tools.ConfigureSubplotsBase): def __init__(self, *args, **kwargs): backend_tools.ConfigureSubplotsBase.__init__(self, *args, **kwargs) self.window = None def trigger(self, *args): self.init_window() self.window.lift() def init_window(self): if self.window: return toolfig = Figure(figsize=(6, 3)) self.window = tk.Tk() canvas = type(self.canvas)(toolfig, master=self.window) toolfig.subplots_adjust(top=0.9) SubplotTool(self.figure, toolfig) canvas.draw() canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1) self.window.protocol("WM_DELETE_WINDOW", self.destroy) def destroy(self, *args, **kwargs): if self.window is not None: self.window.destroy() self.window = None class HelpTk(backend_tools.ToolHelpBase): def trigger(self, *args): dialog = SimpleDialog( self.figure.canvas._tkcanvas, self._get_help_text(), ["OK"]) dialog.done = lambda num: dialog.frame.master.withdraw() backend_tools.ToolSaveFigure = SaveFigureTk backend_tools.ToolConfigureSubplots = ConfigureSubplotsTk backend_tools.ToolSetCursor = SetCursorTk backend_tools.ToolRubberband = RubberbandTk backend_tools.ToolHelp = HelpTk backend_tools.ToolCopyToClipboard = backend_tools.ToolCopyToClipboardBase Toolbar = ToolbarTk @_Backend.export class _BackendTk(_Backend): FigureManager = FigureManagerTk @classmethod def new_figure_manager_given_figure(cls, num, figure): """ Create a new figure manager instance for the given figure. """ with _restore_foreground_window_at_end(): window = tk.Tk(className="matplotlib") window.withdraw() # Put a Matplotlib icon on the window rather than the default tk # icon. Tkinter doesn't allow colour icons on linux systems, but # tk>=8.5 has a iconphoto command which we call directly. See # http://mail.python.org/pipermail/tkinter-discuss/2006-November/000954.html icon_fname = str(cbook._get_data_path( 'images/matplotlib_128.ppm')) icon_img = tk.PhotoImage(file=icon_fname, master=window) try: window.iconphoto(False, icon_img) except Exception as exc: # log the failure (due e.g. to Tk version), but carry on _log.info('Could not load matplotlib icon: %s', exc) canvas = cls.FigureCanvas(figure, master=window) manager = cls.FigureManager(canvas, num, window) if mpl.is_interactive(): manager.show() canvas.draw_idle() return manager @staticmethod def trigger_manager_draw(manager): manager.show() @staticmethod def mainloop(): managers = Gcf.get_all_fig_managers() if managers: managers[0].window.mainloop()