| 1 | """
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| 2 | ASAP plotting class based on matplotlib.
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| 3 | """
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| 4 |
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| 5 | from asap.asaplotbase import *
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| 6 | import Tkinter as Tk
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| 7 | from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, \
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| 8 | FigureManagerTkAgg
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| 9 | # Force use of the newfangled toolbar.
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| 10 | import matplotlib
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| 11 | matplotlib.use("TkAgg")
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| 12 | matplotlib.rcParams['toolbar'] = 'toolbar2'
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| 13 |
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| 14 | class asaplotgui(asaplotbase):
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| 15 | """
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| 16 | ASAP plotting class based on matplotlib.
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| 17 | """
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| 18 |
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| 19 | def __init__(self, rows=1, cols=0, title='', size=(8,6), buffering=False):
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| 20 | """
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| 21 | Create a new instance of the ASAPlot plotting class.
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| 22 |
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| 23 | If rows < 1 then a separate call to set_panels() is required to define
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| 24 | the panel layout; refer to the doctext for set_panels().
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| 25 | """
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| 26 | v = vars()
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| 27 | del v['self']
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| 28 |
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| 29 | asaplotbase.__init__(self, **v)
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| 30 | self.window = Tk.Tk()
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| 31 | def dest_callback():
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| 32 | self.is_dead = True
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| 33 | self.window.destroy()
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| 34 |
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| 35 | self.window.protocol("WM_DELETE_WINDOW", dest_callback)
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| 36 | self.canvas = FigureCanvasTkAgg(self.figure, master=self.window)
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| 37 | self.canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)
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| 38 | # Simply instantiating this is enough to get a working toolbar.
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| 39 | self.figmgr = FigureManagerTkAgg(self.canvas, 1, self.window)
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| 40 | self.window.wm_title('ASAPlot graphics window')
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| 41 |
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| 42 | self.events = {'button_press':None,
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| 43 | 'button_release':None,
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| 44 | 'motion_notify':None}
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| 45 |
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| 46 | matplotlib.interactive = True
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| 47 | self.buffering = buffering
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| 48 |
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| 49 | self.canvas.show()
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| 50 |
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| 51 | def map(self):
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| 52 | """
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| 53 | Reveal the ASAPlot graphics window and bring it to the top of the
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| 54 | window stack.
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| 55 | """
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| 56 | self.window.wm_deiconify()
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| 57 | self.window.lift()
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| 58 |
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| 59 | def position(self):
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| 60 | """
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| 61 | Use the mouse to get a position from a graph.
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| 62 | """
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| 63 |
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| 64 | def position_disable(event):
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| 65 | self.register('button_press', None)
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| 66 | print '%.4f, %.4f' % (event.xdata, event.ydata)
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| 67 |
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| 68 | print 'Press any mouse button...'
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| 69 | self.register('button_press', position_disable)
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| 70 |
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| 71 |
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| 72 | def quit(self):
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| 73 | """
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| 74 | Destroy the ASAPlot graphics window.
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| 75 | """
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| 76 | self.window.destroy()
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| 77 |
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| 78 |
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| 79 | def region(self):
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| 80 | """
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| 81 | Use the mouse to get a rectangular region from a plot.
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| 82 |
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| 83 | The return value is [x0, y0, x1, y1] in world coordinates.
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| 84 | """
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| 85 |
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| 86 | def region_start(event):
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| 87 | height = self.canvas.figure.bbox.height()
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| 88 | self.rect = {'fig': None, 'height': height,
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| 89 | 'x': event.x, 'y': height - event.y,
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| 90 | 'world': [event.xdata, event.ydata,
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| 91 | event.xdata, event.ydata]}
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| 92 | self.register('button_press', None)
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| 93 | self.register('motion_notify', region_draw)
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| 94 | self.register('button_release', region_disable)
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| 95 |
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| 96 | def region_draw(event):
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| 97 | self.canvas._tkcanvas.delete(self.rect['fig'])
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| 98 | self.rect['fig'] = self.canvas._tkcanvas.create_rectangle(
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| 99 | self.rect['x'], self.rect['y'],
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| 100 | event.x, self.rect['height'] - event.y)
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| 101 |
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| 102 | def region_disable(event):
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| 103 | self.register('motion_notify', None)
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| 104 | self.register('button_release', None)
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| 105 |
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| 106 | self.canvas._tkcanvas.delete(self.rect['fig'])
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| 107 |
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| 108 | self.rect['world'][2:4] = [event.xdata, event.ydata]
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| 109 | print '(%.2f, %.2f) (%.2f, %.2f)' % (self.rect['world'][0],
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| 110 | self.rect['world'][1], self.rect['world'][2],
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| 111 | self.rect['world'][3])
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| 112 |
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| 113 | self.register('button_press', region_start)
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| 114 |
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| 115 | # This has to be modified to block and return the result (currently
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| 116 | # printed by region_disable) when that becomes possible in matplotlib.
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| 117 |
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| 118 | return [0.0, 0.0, 0.0, 0.0]
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| 119 |
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| 120 |
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| 121 | def register(self, type=None, func=None):
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| 122 | """
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| 123 | Register, reregister, or deregister events of type 'button_press',
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| 124 | 'button_release', or 'motion_notify'.
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| 125 |
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| 126 | The specified callback function should have the following signature:
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| 127 |
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| 128 | def func(event)
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| 129 |
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| 130 | where event is an MplEvent instance containing the following data:
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| 131 |
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| 132 | name # Event name.
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| 133 | canvas # FigureCanvas instance generating the event.
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| 134 | x = None # x position - pixels from left of canvas.
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| 135 | y = None # y position - pixels from bottom of canvas.
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| 136 | button = None # Button pressed: None, 1, 2, 3.
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| 137 | key = None # Key pressed: None, chr(range(255)), shift,
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| 138 | win, or control
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| 139 | inaxes = None # Axes instance if cursor within axes.
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| 140 | xdata = None # x world coordinate.
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| 141 | ydata = None # y world coordinate.
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| 142 |
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| 143 | For example:
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| 144 |
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| 145 | def mouse_move(event):
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| 146 | print event.xdata, event.ydata
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| 147 |
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| 148 | a = asaplot()
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| 149 | a.register('motion_notify', mouse_move)
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| 150 |
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| 151 | If func is None, the event is deregistered.
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| 152 |
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| 153 | Note that in TkAgg keyboard button presses don't generate an event.
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| 154 | """
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| 155 |
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| 156 | if not self.events.has_key(type): return
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| 157 |
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| 158 | if func is None:
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| 159 | if self.events[type] is not None:
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| 160 | # It's not clear that this does anything.
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| 161 | self.canvas.mpl_disconnect(self.events[type])
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| 162 | self.events[type] = None
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| 163 |
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| 164 | # It seems to be necessary to return events to the toolbar.
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| 165 | if type == 'motion_notify':
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| 166 | self.canvas.mpl_connect(type + '_event',
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| 167 | self.figmgr.toolbar.mouse_move)
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| 168 | elif type == 'button_press':
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| 169 | self.canvas.mpl_connect(type + '_event',
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| 170 | self.figmgr.toolbar.press)
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| 171 | elif type == 'button_release':
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| 172 | self.canvas.mpl_connect(type + '_event',
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| 173 | self.figmgr.toolbar.release)
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| 174 |
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| 175 | else:
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| 176 | self.events[type] = self.canvas.mpl_connect(type + '_event', func)
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| 177 |
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| 178 |
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| 179 | def show(self):
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| 180 | """
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| 181 | Show graphics dependent on the current buffering state.
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| 182 | """
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| 183 | if not self.buffering:
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| 184 | asaplotbase.show(self)
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| 185 | self.window.wm_deiconify()
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| 186 | self.canvas.show()
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| 187 |
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| 188 | def terminate(self):
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| 189 | """
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| 190 | Clear the figure.
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| 191 | """
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| 192 | self.window.destroy()
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| 193 |
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| 194 | def unmap(self):
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| 195 | """
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| 196 | Hide the ASAPlot graphics window.
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| 197 | """
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| 198 | self.window.wm_withdraw()
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