171 lines
5.5 KiB
Python
171 lines
5.5 KiB
Python
import matplotlib as mpl
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from matplotlib import cbook
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from matplotlib._pylab_helpers import Gcf
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from matplotlib.backends import _macosx
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from matplotlib.backends.backend_agg import FigureCanvasAgg
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from matplotlib.backend_bases import (
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_Backend, FigureCanvasBase, FigureManagerBase, NavigationToolbar2,
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TimerBase)
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from matplotlib.figure import Figure
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from matplotlib.widgets import SubplotTool
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########################################################################
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#
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# The following functions and classes are for pylab and implement
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# window/figure managers, etc...
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#
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########################################################################
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class TimerMac(_macosx.Timer, TimerBase):
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"""Subclass of `.TimerBase` using CFRunLoop timer events."""
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# completely implemented at the C-level (in _macosx.Timer)
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class FigureCanvasMac(_macosx.FigureCanvas, FigureCanvasAgg):
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"""
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The canvas the figure renders into. Calls the draw and print fig
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methods, creates the renderers, etc...
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Events such as button presses, mouse movements, and key presses
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are handled in the C code and the base class methods
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button_press_event, button_release_event, motion_notify_event,
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key_press_event, and key_release_event are called from there.
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Attributes
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----------
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figure : `matplotlib.figure.Figure`
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A high-level Figure instance
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"""
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required_interactive_framework = "macosx"
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_timer_cls = TimerMac
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def __init__(self, figure):
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FigureCanvasBase.__init__(self, figure)
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width, height = self.get_width_height()
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_macosx.FigureCanvas.__init__(self, width, height)
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self._dpi_ratio = 1.0
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def _set_device_scale(self, value):
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if self._dpi_ratio != value:
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# Need the new value in place before setting figure.dpi, which
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# will trigger a resize
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self._dpi_ratio, old_value = value, self._dpi_ratio
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self.figure.dpi = self.figure.dpi / old_value * self._dpi_ratio
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def _draw(self):
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renderer = self.get_renderer(cleared=self.figure.stale)
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if self.figure.stale:
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self.figure.draw(renderer)
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return renderer
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def draw(self):
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# docstring inherited
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self.draw_idle()
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self.flush_events()
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# draw_idle is provided by _macosx.FigureCanvas
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@cbook.deprecated("3.2", alternative="draw_idle()")
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def invalidate(self):
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return self.draw_idle()
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def blit(self, bbox=None):
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self.draw_idle()
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def resize(self, width, height):
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dpi = self.figure.dpi
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width /= dpi
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height /= dpi
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self.figure.set_size_inches(width * self._dpi_ratio,
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height * self._dpi_ratio,
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forward=False)
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FigureCanvasBase.resize_event(self)
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self.draw_idle()
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class FigureManagerMac(_macosx.FigureManager, FigureManagerBase):
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"""
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Wrap everything up into a window for the pylab interface
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"""
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def __init__(self, canvas, num):
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FigureManagerBase.__init__(self, canvas, num)
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title = "Figure %d" % num
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_macosx.FigureManager.__init__(self, canvas, title)
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if mpl.rcParams['toolbar'] == 'toolbar2':
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self.toolbar = NavigationToolbar2Mac(canvas)
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else:
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self.toolbar = None
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if self.toolbar is not None:
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self.toolbar.update()
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if mpl.is_interactive():
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self.show()
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self.canvas.draw_idle()
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def close(self):
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Gcf.destroy(self)
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class NavigationToolbar2Mac(_macosx.NavigationToolbar2, NavigationToolbar2):
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def __init__(self, canvas):
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self.canvas = canvas # Needed by the _macosx __init__.
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data_path = cbook._get_data_path('images')
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_, tooltips, image_names, _ = zip(*NavigationToolbar2.toolitems)
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_macosx.NavigationToolbar2.__init__(
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self,
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tuple(str(data_path / image_name) + ".pdf"
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for image_name in image_names if image_name is not None),
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tuple(tooltip for tooltip in tooltips if tooltip is not None))
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NavigationToolbar2.__init__(self, canvas)
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def draw_rubberband(self, event, x0, y0, x1, y1):
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self.canvas.set_rubberband(int(x0), int(y0), int(x1), int(y1))
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def release_zoom(self, event):
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super().release_zoom(event)
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self.canvas.remove_rubberband()
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def set_cursor(self, cursor):
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_macosx.set_cursor(cursor)
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def save_figure(self, *args):
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filename = _macosx.choose_save_file('Save the figure',
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self.canvas.get_default_filename())
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if filename is None: # Cancel
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return
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self.canvas.figure.savefig(filename)
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def prepare_configure_subplots(self):
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toolfig = Figure(figsize=(6, 3))
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canvas = FigureCanvasMac(toolfig)
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toolfig.subplots_adjust(top=0.9)
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# Need to keep a reference to the tool.
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_tool = SubplotTool(self.canvas.figure, toolfig)
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return canvas
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def set_message(self, message):
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_macosx.NavigationToolbar2.set_message(self, message.encode('utf-8'))
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########################################################################
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#
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# Now just provide the standard names that backend.__init__ is expecting
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#
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########################################################################
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@_Backend.export
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class _BackendMac(_Backend):
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FigureCanvas = FigureCanvasMac
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FigureManager = FigureManagerMac
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@staticmethod
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def trigger_manager_draw(manager):
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manager.canvas.draw_idle()
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@staticmethod
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def mainloop():
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_macosx.show()
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