import functools import logging import os from pathlib import Path import sys import matplotlib from matplotlib import backend_tools, cbook, rcParams from matplotlib._pylab_helpers import Gcf from matplotlib.backend_bases import ( _Backend, FigureCanvasBase, FigureManagerBase, NavigationToolbar2, StatusbarBase, TimerBase, ToolContainerBase, cursors) from matplotlib.backend_managers import ToolManager from matplotlib.figure import Figure from matplotlib.widgets import SubplotTool try: import gi except ImportError: raise ImportError("The GTK3 backends require PyGObject") try: # :raises ValueError: If module/version is already loaded, already # required, or unavailable. gi.require_version("Gtk", "3.0") except ValueError as e: # in this case we want to re-raise as ImportError so the # auto-backend selection logic correctly skips. raise ImportError from e from gi.repository import GLib, GObject, Gtk, Gdk _log = logging.getLogger(__name__) backend_version = "%s.%s.%s" % ( Gtk.get_major_version(), Gtk.get_micro_version(), Gtk.get_minor_version()) # the true dots per inch on the screen; should be display dependent # see http://groups.google.com/groups?q=screen+dpi+x11&hl=en&lr=&ie=UTF-8&oe=UTF-8&safe=off&selm=7077.26e81ad5%40swift.cs.tcd.ie&rnum=5 for some info about screen dpi PIXELS_PER_INCH = 96 try: cursord = { cursors.MOVE : Gdk.Cursor.new(Gdk.CursorType.FLEUR), cursors.HAND : Gdk.Cursor.new(Gdk.CursorType.HAND2), cursors.POINTER : Gdk.Cursor.new(Gdk.CursorType.LEFT_PTR), cursors.SELECT_REGION : Gdk.Cursor.new(Gdk.CursorType.TCROSS), cursors.WAIT : Gdk.Cursor.new(Gdk.CursorType.WATCH), } except TypeError as exc: # Happens when running headless. Convert to ImportError to cooperate with # backend switching. raise ImportError(exc) class TimerGTK3(TimerBase): ''' Subclass of :class:`backend_bases.TimerBase` using GTK3 for timer events. Attributes ---------- interval : int The time between timer events in milliseconds. Default is 1000 ms. single_shot : bool Boolean flag indicating whether this timer should operate as single shot (run once and then stop). Defaults to False. callbacks : list Stores list of (func, args) tuples that will be called upon timer events. This list can be manipulated directly, or the functions `add_callback` and `remove_callback` can be used. ''' def _timer_start(self): # Need to stop it, otherwise we potentially leak a timer id that will # never be stopped. self._timer_stop() self._timer = GLib.timeout_add(self._interval, self._on_timer) def _timer_stop(self): if self._timer is not None: GLib.source_remove(self._timer) self._timer = None def _timer_set_interval(self): # Only stop and restart it if the timer has already been started if self._timer is not None: self._timer_stop() self._timer_start() def _on_timer(self): TimerBase._on_timer(self) # Gtk timeout_add() requires that the callback returns True if it # is to be called again. if self.callbacks and not self._single: return True else: self._timer = None return False class FigureCanvasGTK3(Gtk.DrawingArea, FigureCanvasBase): keyvald = {65507: 'control', 65505: 'shift', 65513: 'alt', 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', } # Setting this as a static constant prevents # this resulting expression from leaking event_mask = (Gdk.EventMask.BUTTON_PRESS_MASK | Gdk.EventMask.BUTTON_RELEASE_MASK | Gdk.EventMask.EXPOSURE_MASK | Gdk.EventMask.KEY_PRESS_MASK | Gdk.EventMask.KEY_RELEASE_MASK | Gdk.EventMask.ENTER_NOTIFY_MASK | Gdk.EventMask.LEAVE_NOTIFY_MASK | Gdk.EventMask.POINTER_MOTION_MASK | Gdk.EventMask.POINTER_MOTION_HINT_MASK| Gdk.EventMask.SCROLL_MASK) def __init__(self, figure): FigureCanvasBase.__init__(self, figure) GObject.GObject.__init__(self) self._idle_draw_id = 0 self._lastCursor = None self.connect('scroll_event', self.scroll_event) self.connect('button_press_event', self.button_press_event) self.connect('button_release_event', self.button_release_event) self.connect('configure_event', self.configure_event) self.connect('draw', self.on_draw_event) self.connect('key_press_event', self.key_press_event) self.connect('key_release_event', self.key_release_event) self.connect('motion_notify_event', self.motion_notify_event) self.connect('leave_notify_event', self.leave_notify_event) self.connect('enter_notify_event', self.enter_notify_event) self.connect('size_allocate', self.size_allocate) self.set_events(self.__class__.event_mask) self.set_double_buffered(True) self.set_can_focus(True) self._renderer_init() def destroy(self): #Gtk.DrawingArea.destroy(self) self.close_event() if self._idle_draw_id != 0: GLib.source_remove(self._idle_draw_id) def scroll_event(self, widget, event): x = event.x # flipy so y=0 is bottom of canvas y = self.get_allocation().height - event.y if event.direction==Gdk.ScrollDirection.UP: step = 1 else: step = -1 FigureCanvasBase.scroll_event(self, x, y, step, guiEvent=event) return False # finish event propagation? def button_press_event(self, widget, event): x = event.x # flipy so y=0 is bottom of canvas y = self.get_allocation().height - event.y FigureCanvasBase.button_press_event(self, x, y, event.button, guiEvent=event) return False # finish event propagation? def button_release_event(self, widget, event): x = event.x # flipy so y=0 is bottom of canvas y = self.get_allocation().height - event.y FigureCanvasBase.button_release_event(self, x, y, event.button, guiEvent=event) return False # finish event propagation? def key_press_event(self, widget, event): key = self._get_key(event) FigureCanvasBase.key_press_event(self, key, guiEvent=event) return True # stop event propagation def key_release_event(self, widget, event): key = self._get_key(event) FigureCanvasBase.key_release_event(self, key, guiEvent=event) return True # stop event propagation def motion_notify_event(self, widget, event): if event.is_hint: t, x, y, state = event.window.get_pointer() else: x, y, state = event.x, event.y, event.get_state() # flipy so y=0 is bottom of canvas y = self.get_allocation().height - y FigureCanvasBase.motion_notify_event(self, x, y, guiEvent=event) return False # finish event propagation? def leave_notify_event(self, widget, event): FigureCanvasBase.leave_notify_event(self, event) def enter_notify_event(self, widget, event): x = event.x # flipy so y=0 is bottom of canvas y = self.get_allocation().height - event.y FigureCanvasBase.enter_notify_event(self, guiEvent=event, xy=(x, y)) def size_allocate(self, widget, allocation): dpival = self.figure.dpi winch = allocation.width / dpival hinch = allocation.height / dpival self.figure.set_size_inches(winch, hinch, forward=False) FigureCanvasBase.resize_event(self) self.draw_idle() def _get_key(self, event): if event.keyval in self.keyvald: key = self.keyvald[event.keyval] elif event.keyval < 256: key = chr(event.keyval) else: key = None modifiers = [ (Gdk.ModifierType.MOD4_MASK, 'super'), (Gdk.ModifierType.MOD1_MASK, 'alt'), (Gdk.ModifierType.CONTROL_MASK, 'ctrl'), ] for key_mask, prefix in modifiers: if event.state & key_mask: key = '{0}+{1}'.format(prefix, key) return key def configure_event(self, widget, event): if widget.get_property("window") is None: return w, h = event.width, event.height if w < 3 or h < 3: return # empty fig # resize the figure (in inches) dpi = self.figure.dpi self.figure.set_size_inches(w / dpi, h / dpi, forward=False) return False # finish event propagation? def on_draw_event(self, widget, ctx): # to be overwritten by GTK3Agg or GTK3Cairo pass def draw(self): # docstring inherited if self.is_drawable(): self.queue_draw() def draw_idle(self): # docstring inherited if self._idle_draw_id != 0: return def idle_draw(*args): try: self.draw() finally: self._idle_draw_id = 0 return False self._idle_draw_id = GLib.idle_add(idle_draw) def new_timer(self, *args, **kwargs): # docstring inherited return TimerGTK3(*args, **kwargs) def flush_events(self): # docstring inherited Gdk.threads_enter() while Gtk.events_pending(): Gtk.main_iteration() Gdk.flush() Gdk.threads_leave() class FigureManagerGTK3(FigureManagerBase): """ Attributes ---------- canvas : `FigureCanvas` The FigureCanvas instance num : int or str The Figure number toolbar : Gtk.Toolbar The Gtk.Toolbar vbox : Gtk.VBox The Gtk.VBox containing the canvas and toolbar window : Gtk.Window The Gtk.Window """ def __init__(self, canvas, num): FigureManagerBase.__init__(self, canvas, num) self.window = Gtk.Window() self.window.set_wmclass("matplotlib", "Matplotlib") self.set_window_title("Figure %d" % num) try: self.window.set_icon_from_file(window_icon) except Exception: # Some versions of gtk throw a glib.GError but not all, so I am not # sure how to catch it. I am unhappy doing a blanket catch here, # but am not sure what a better way is - JDH _log.info('Could not load matplotlib icon: %s', sys.exc_info()[1]) self.vbox = Gtk.Box() self.vbox.set_property("orientation", Gtk.Orientation.VERTICAL) self.window.add(self.vbox) self.vbox.show() self.canvas.show() self.vbox.pack_start(self.canvas, True, True, 0) # calculate size for window w = int(self.canvas.figure.bbox.width) h = int(self.canvas.figure.bbox.height) self.toolmanager = self._get_toolmanager() self.toolbar = self._get_toolbar() self.statusbar = None def add_widget(child, expand, fill, padding): child.show() self.vbox.pack_end(child, False, False, 0) size_request = child.size_request() return size_request.height if self.toolmanager: backend_tools.add_tools_to_manager(self.toolmanager) if self.toolbar: backend_tools.add_tools_to_container(self.toolbar) self.statusbar = StatusbarGTK3(self.toolmanager) h += add_widget(self.statusbar, False, False, 0) h += add_widget(Gtk.HSeparator(), False, False, 0) if self.toolbar is not None: self.toolbar.show() h += add_widget(self.toolbar, False, False, 0) self.window.set_default_size(w, h) def destroy(*args): Gcf.destroy(num) self.window.connect("destroy", destroy) self.window.connect("delete_event", destroy) if matplotlib.is_interactive(): self.window.show() self.canvas.draw_idle() self.canvas.grab_focus() def destroy(self, *args): self.vbox.destroy() self.window.destroy() self.canvas.destroy() if self.toolbar: self.toolbar.destroy() if (Gcf.get_num_fig_managers() == 0 and not matplotlib.is_interactive() and Gtk.main_level() >= 1): Gtk.main_quit() def show(self): # show the figure window self.window.show() self.window.present() def full_screen_toggle(self): self._full_screen_flag = not self._full_screen_flag if self._full_screen_flag: self.window.fullscreen() else: self.window.unfullscreen() _full_screen_flag = False def _get_toolbar(self): # must be inited after the window, drawingArea and figure # attrs are set if rcParams['toolbar'] == 'toolbar2': toolbar = NavigationToolbar2GTK3(self.canvas, self.window) elif rcParams['toolbar'] == 'toolmanager': toolbar = ToolbarGTK3(self.toolmanager) else: toolbar = None return toolbar def _get_toolmanager(self): # must be initialised after toolbar has been set if rcParams['toolbar'] == 'toolmanager': toolmanager = ToolManager(self.canvas.figure) else: toolmanager = None return toolmanager def get_window_title(self): return self.window.get_title() def set_window_title(self, title): self.window.set_title(title) def resize(self, width, height): 'set the canvas size in pixels' #_, _, cw, ch = self.canvas.allocation #_, _, ww, wh = self.window.allocation #self.window.resize (width-cw+ww, height-ch+wh) self.window.resize(width, height) class NavigationToolbar2GTK3(NavigationToolbar2, Gtk.Toolbar): def __init__(self, canvas, window): self.win = window GObject.GObject.__init__(self) NavigationToolbar2.__init__(self, canvas) self.ctx = None def set_message(self, s): self.message.set_label(s) def set_cursor(self, cursor): self.canvas.get_property("window").set_cursor(cursord[cursor]) Gtk.main_iteration() def draw_rubberband(self, event, x0, y0, x1, y1): 'adapted from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/189744' self.ctx = self.canvas.get_property("window").cairo_create() # todo: instead of redrawing the entire figure, copy the part of # the figure that was covered by the previous rubberband rectangle self.canvas.draw() height = self.canvas.figure.bbox.height y1 = height - y1 y0 = height - y0 w = abs(x1 - x0) h = abs(y1 - y0) rect = [int(val) for val in (min(x0, x1), min(y0, y1), w, h)] self.ctx.new_path() self.ctx.set_line_width(0.5) self.ctx.rectangle(rect[0], rect[1], rect[2], rect[3]) self.ctx.set_source_rgb(0, 0, 0) self.ctx.stroke() def _init_toolbar(self): self.set_style(Gtk.ToolbarStyle.ICONS) basedir = os.path.join(rcParams['datapath'], 'images') self._gtk_ids = {} for text, tooltip_text, image_file, callback in self.toolitems: if text is None: self.insert(Gtk.SeparatorToolItem(), -1) continue fname = os.path.join(basedir, image_file + '.png') image = Gtk.Image() image.set_from_file(fname) self._gtk_ids[text] = tbutton = Gtk.ToolButton() tbutton.set_label(text) tbutton.set_icon_widget(image) self.insert(tbutton, -1) tbutton.connect('clicked', getattr(self, callback)) tbutton.set_tooltip_text(tooltip_text) toolitem = Gtk.SeparatorToolItem() self.insert(toolitem, -1) toolitem.set_draw(False) toolitem.set_expand(True) toolitem = Gtk.ToolItem() self.insert(toolitem, -1) self.message = Gtk.Label() toolitem.add(self.message) self.show_all() @cbook.deprecated("3.1") def get_filechooser(self): fc = FileChooserDialog( title='Save the figure', parent=self.win, path=os.path.expanduser(rcParams['savefig.directory']), filetypes=self.canvas.get_supported_filetypes(), default_filetype=self.canvas.get_default_filetype()) fc.set_current_name(self.canvas.get_default_filename()) return fc def save_figure(self, *args): dialog = Gtk.FileChooserDialog( title="Save the figure", parent=self.canvas.get_toplevel(), action=Gtk.FileChooserAction.SAVE, buttons=(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, Gtk.STOCK_SAVE, Gtk.ResponseType.OK), ) for name, fmts \ in self.canvas.get_supported_filetypes_grouped().items(): ff = Gtk.FileFilter() ff.set_name(name) for fmt in fmts: ff.add_pattern("*." + fmt) dialog.add_filter(ff) if self.canvas.get_default_filetype() in fmts: dialog.set_filter(ff) @functools.partial(dialog.connect, "notify::filter") def on_notify_filter(*args): name = dialog.get_filter().get_name() fmt = self.canvas.get_supported_filetypes_grouped()[name][0] dialog.set_current_name( str(Path(dialog.get_current_name()).with_suffix("." + fmt))) dialog.set_current_folder(rcParams["savefig.directory"]) dialog.set_current_name(self.canvas.get_default_filename()) dialog.set_do_overwrite_confirmation(True) response = dialog.run() fname = dialog.get_filename() ff = dialog.get_filter() # Doesn't autoadjust to filename :/ fmt = self.canvas.get_supported_filetypes_grouped()[ff.get_name()][0] dialog.destroy() if response == Gtk.ResponseType.CANCEL: return # Save dir for next time, unless empty str (which means use cwd). if rcParams['savefig.directory']: rcParams['savefig.directory'] = os.path.dirname(fname) try: self.canvas.figure.savefig(fname, format=fmt) except Exception as e: error_msg_gtk(str(e), parent=self) def configure_subplots(self, button): toolfig = Figure(figsize=(6, 3)) canvas = self._get_canvas(toolfig) toolfig.subplots_adjust(top=0.9) tool = SubplotTool(self.canvas.figure, toolfig) w = int(toolfig.bbox.width) h = int(toolfig.bbox.height) window = Gtk.Window() try: window.set_icon_from_file(window_icon) except Exception: # we presumably already logged a message on the # failure of the main plot, don't keep reporting pass window.set_title("Subplot Configuration Tool") window.set_default_size(w, h) vbox = Gtk.Box() vbox.set_property("orientation", Gtk.Orientation.VERTICAL) window.add(vbox) vbox.show() canvas.show() vbox.pack_start(canvas, True, True, 0) window.show() def _get_canvas(self, fig): return self.canvas.__class__(fig) def set_history_buttons(self): can_backward = self._nav_stack._pos > 0 can_forward = self._nav_stack._pos < len(self._nav_stack._elements) - 1 if 'Back' in self._gtk_ids: self._gtk_ids['Back'].set_sensitive(can_backward) if 'Forward' in self._gtk_ids: self._gtk_ids['Forward'].set_sensitive(can_forward) @cbook.deprecated("3.1") class FileChooserDialog(Gtk.FileChooserDialog): """GTK+ file selector which remembers the last file/directory selected and presents the user with a menu of supported image formats """ def __init__(self, title = 'Save file', parent = None, action = Gtk.FileChooserAction.SAVE, buttons = (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, Gtk.STOCK_SAVE, Gtk.ResponseType.OK), path = None, filetypes = [], default_filetype = None ): super().__init__(title, parent, action, buttons) self.set_default_response(Gtk.ResponseType.OK) self.set_do_overwrite_confirmation(True) if not path: path = os.getcwd() # create an extra widget to list supported image formats self.set_current_folder(path) self.set_current_name('image.' + default_filetype) hbox = Gtk.Box(spacing=10) hbox.pack_start(Gtk.Label(label="File Format:"), False, False, 0) liststore = Gtk.ListStore(GObject.TYPE_STRING) cbox = Gtk.ComboBox() cbox.set_model(liststore) cell = Gtk.CellRendererText() cbox.pack_start(cell, True) cbox.add_attribute(cell, 'text', 0) hbox.pack_start(cbox, False, False, 0) self.filetypes = filetypes sorted_filetypes = sorted(filetypes.items()) default = 0 for i, (ext, name) in enumerate(sorted_filetypes): liststore.append(["%s (*.%s)" % (name, ext)]) if ext == default_filetype: default = i cbox.set_active(default) self.ext = default_filetype def cb_cbox_changed(cbox, data=None): """File extension changed""" head, filename = os.path.split(self.get_filename()) root, ext = os.path.splitext(filename) ext = ext[1:] new_ext = sorted_filetypes[cbox.get_active()][0] self.ext = new_ext if ext in self.filetypes: filename = root + '.' + new_ext elif ext == '': filename = filename.rstrip('.') + '.' + new_ext self.set_current_name(filename) cbox.connect("changed", cb_cbox_changed) hbox.show_all() self.set_extra_widget(hbox) @cbook.deprecated("3.0", alternative="sorted(self.filetypes.items())") def sorted_filetypes(self): return sorted(self.filetypes.items()) def get_filename_from_user(self): if self.run() == int(Gtk.ResponseType.OK): return self.get_filename(), self.ext else: return None, self.ext class ToolbarGTK3(ToolContainerBase, Gtk.Box): _icon_extension = '.png' def __init__(self, toolmanager): ToolContainerBase.__init__(self, toolmanager) Gtk.Box.__init__(self) self.set_property("orientation", Gtk.Orientation.VERTICAL) self._toolarea = Gtk.Box() self._toolarea.set_property('orientation', Gtk.Orientation.HORIZONTAL) self.pack_start(self._toolarea, False, False, 0) self._toolarea.show_all() self._groups = {} self._toolitems = {} def add_toolitem(self, name, group, position, image_file, description, toggle): if toggle: tbutton = Gtk.ToggleToolButton() else: tbutton = Gtk.ToolButton() tbutton.set_label(name) if image_file is not None: image = Gtk.Image() image.set_from_file(image_file) tbutton.set_icon_widget(image) if position is None: position = -1 self._add_button(tbutton, group, position) signal = tbutton.connect('clicked', self._call_tool, name) tbutton.set_tooltip_text(description) tbutton.show_all() self._toolitems.setdefault(name, []) self._toolitems[name].append((tbutton, signal)) def _add_button(self, button, group, position): if group not in self._groups: if self._groups: self._add_separator() toolbar = Gtk.Toolbar() toolbar.set_style(Gtk.ToolbarStyle.ICONS) self._toolarea.pack_start(toolbar, False, False, 0) toolbar.show_all() self._groups[group] = toolbar self._groups[group].insert(button, position) def _call_tool(self, btn, name): self.trigger_tool(name) def toggle_toolitem(self, name, toggled): if name not in self._toolitems: return for toolitem, signal in self._toolitems[name]: toolitem.handler_block(signal) toolitem.set_active(toggled) toolitem.handler_unblock(signal) def remove_toolitem(self, name): if name not in self._toolitems: self.toolmanager.message_event('%s Not in toolbar' % name, self) return for group in self._groups: for toolitem, _signal in self._toolitems[name]: if toolitem in self._groups[group]: self._groups[group].remove(toolitem) del self._toolitems[name] def _add_separator(self): sep = Gtk.Separator() sep.set_property("orientation", Gtk.Orientation.VERTICAL) self._toolarea.pack_start(sep, False, True, 0) sep.show_all() class StatusbarGTK3(StatusbarBase, Gtk.Statusbar): def __init__(self, *args, **kwargs): StatusbarBase.__init__(self, *args, **kwargs) Gtk.Statusbar.__init__(self) self._context = self.get_context_id('message') def set_message(self, s): self.pop(self._context) self.push(self._context, s) class RubberbandGTK3(backend_tools.RubberbandBase): def draw_rubberband(self, x0, y0, x1, y1): NavigationToolbar2GTK3.draw_rubberband( self._make_classic_style_pseudo_toolbar(), None, x0, y0, x1, y1) class SaveFigureGTK3(backend_tools.SaveFigureBase): @cbook.deprecated("3.1") def get_filechooser(self): fc = FileChooserDialog( title='Save the figure', parent=self.figure.canvas.manager.window, path=os.path.expanduser(rcParams['savefig.directory']), filetypes=self.figure.canvas.get_supported_filetypes(), default_filetype=self.figure.canvas.get_default_filetype()) fc.set_current_name(self.figure.canvas.get_default_filename()) return fc def trigger(self, *args, **kwargs): class PseudoToolbar: canvas = self.figure.canvas return NavigationToolbar2GTK3.save_figure(PseudoToolbar()) class SetCursorGTK3(backend_tools.SetCursorBase): def set_cursor(self, cursor): NavigationToolbar2GTK3.set_cursor( self._make_classic_style_pseudo_toolbar(), cursor) class ConfigureSubplotsGTK3(backend_tools.ConfigureSubplotsBase, Gtk.Window): def __init__(self, *args, **kwargs): backend_tools.ConfigureSubplotsBase.__init__(self, *args, **kwargs) self.window = None def init_window(self): if self.window: return self.window = Gtk.Window(title="Subplot Configuration Tool") try: self.window.window.set_icon_from_file(window_icon) except Exception: # we presumably already logged a message on the # failure of the main plot, don't keep reporting pass self.vbox = Gtk.Box() self.vbox.set_property("orientation", Gtk.Orientation.VERTICAL) self.window.add(self.vbox) self.vbox.show() self.window.connect('destroy', self.destroy) toolfig = Figure(figsize=(6, 3)) canvas = self.figure.canvas.__class__(toolfig) toolfig.subplots_adjust(top=0.9) SubplotTool(self.figure, toolfig) w = int(toolfig.bbox.width) h = int(toolfig.bbox.height) self.window.set_default_size(w, h) canvas.show() self.vbox.pack_start(canvas, True, True, 0) self.window.show() def destroy(self, *args): self.window.destroy() self.window = None def _get_canvas(self, fig): return self.canvas.__class__(fig) def trigger(self, sender, event, data=None): self.init_window() self.window.present() class HelpGTK3(backend_tools.ToolHelpBase): def _normalize_shortcut(self, key): """ Convert Matplotlib key presses to GTK+ accelerator identifiers. Related to `FigureCanvasGTK3._get_key`. """ special = { 'backspace': 'BackSpace', 'pagedown': 'Page_Down', 'pageup': 'Page_Up', 'scroll_lock': 'Scroll_Lock', } parts = key.split('+') mods = ['<' + mod + '>' for mod in parts[:-1]] key = parts[-1] if key in special: key = special[key] elif len(key) > 1: key = key.capitalize() elif key.isupper(): mods += [''] return ''.join(mods) + key def _show_shortcuts_window(self): section = Gtk.ShortcutsSection() for name, tool in sorted(self.toolmanager.tools.items()): if not tool.description: continue # Putting everything in a separate group allows GTK to # automatically split them into separate columns/pages, which is # useful because we have lots of shortcuts, some with many keys # that are very wide. group = Gtk.ShortcutsGroup() section.add(group) # A hack to remove the title since we have no group naming. group.forall(lambda widget, data: widget.set_visible(False), None) shortcut = Gtk.ShortcutsShortcut( accelerator=' '.join( self._normalize_shortcut(key) for key in self.toolmanager.get_tool_keymap(name) # Will never be sent: if 'cmd+' not in key), title=tool.name, subtitle=tool.description) group.add(shortcut) window = Gtk.ShortcutsWindow( title='Help', modal=True, transient_for=self._figure.canvas.get_toplevel()) section.show() # Must be done explicitly before add! window.add(section) window.show_all() def _show_shortcuts_dialog(self): dialog = Gtk.MessageDialog( self._figure.canvas.get_toplevel(), 0, Gtk.MessageType.INFO, Gtk.ButtonsType.OK, self._get_help_text(), title="Help") dialog.run() dialog.destroy() def trigger(self, *args): if Gtk.check_version(3, 20, 0) is None: self._show_shortcuts_window() else: self._show_shortcuts_dialog() class ToolCopyToClipboardGTK3(backend_tools.ToolCopyToClipboardBase): def trigger(self, *args, **kwargs): clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD) window = self.canvas.get_window() x, y, width, height = window.get_geometry() pb = Gdk.pixbuf_get_from_window(window, x, y, width, height) clipboard.set_image(pb) # Define the file to use as the GTk icon if sys.platform == 'win32': icon_filename = 'matplotlib.png' else: icon_filename = 'matplotlib.svg' window_icon = os.path.join( matplotlib.rcParams['datapath'], 'images', icon_filename) def error_msg_gtk(msg, parent=None): if parent is not None: # find the toplevel Gtk.Window parent = parent.get_toplevel() if not parent.is_toplevel(): parent = None if not isinstance(msg, str): msg = ','.join(map(str, msg)) dialog = Gtk.MessageDialog( parent = parent, type = Gtk.MessageType.ERROR, buttons = Gtk.ButtonsType.OK, message_format = msg) dialog.run() dialog.destroy() backend_tools.ToolSaveFigure = SaveFigureGTK3 backend_tools.ToolConfigureSubplots = ConfigureSubplotsGTK3 backend_tools.ToolSetCursor = SetCursorGTK3 backend_tools.ToolRubberband = RubberbandGTK3 backend_tools.ToolHelp = HelpGTK3 backend_tools.ToolCopyToClipboard = ToolCopyToClipboardGTK3 Toolbar = ToolbarGTK3 @_Backend.export class _BackendGTK3(_Backend): required_interactive_framework = "gtk3" FigureCanvas = FigureCanvasGTK3 FigureManager = FigureManagerGTK3 @staticmethod def trigger_manager_draw(manager): manager.canvas.draw_idle() @staticmethod def mainloop(): if Gtk.main_level() == 0: Gtk.main()