| 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 | # Force use of the newfangled toolbar.
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| 7 | import gtk
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| 8 | import matplotlib
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| 9 | from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as FigureCanvas
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| 10 | matplotlib.use("GTkAgg")
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| 11 | matplotlib.rcParams['toolbar'] = 'toolbar2'
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| 12 |
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| 13 | class asaplotgui(asaplotbase):
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| 14 | """
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| 15 | ASAP plotting class based on matplotlib.
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| 16 | """
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| 17 |
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| 18 | def __init__(self, rows=1, cols=0, title='', size=(8,6), buffering=False):
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| 19 | """
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| 20 | Create a new instance of the ASAPlot plotting class.
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| 21 |
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| 22 | If rows < 1 then a separate call to set_panels() is required to define
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| 23 | the panel layout; refer to the doctext for set_panels().
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| 24 | """
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| 25 | v = vars()
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| 26 | del v['self']
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| 27 |
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| 28 | asaplotbase.__init__(self, **v)
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| 29 | self.window = gtk.Window()
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| 30 | def dest_callback(val):
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| 31 | self.is_dead = True
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| 32 | self.window.destroy()
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| 33 | self.window.connect("destroy", dest_callback )
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| 34 | self.window.set_default_size(800,600)
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| 35 | self.subwin = gtk.ScrolledWindow()
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| 36 | self.window.add(self.subwin)
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| 37 | self.subwin.set_border_width(10)
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| 38 | self.canvas = FigureCanvas(self.figure)
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| 39 | # Simply instantiating this is enough to get a working toolbar.
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| 40 | self.figmgr = None#FigureManagerTkAgg(self.canvas, 1, self.window)
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| 41 | self.window.set_title('ASAPlot graphics window')
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| 42 |
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| 43 | self.events = {'button_press':None,
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| 44 | 'button_release':None,
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| 45 | 'motion_notify':None}
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| 46 |
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| 47 | self.subwin.add_with_viewport(self.canvas)
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| 48 | matplotlib.interactive = True
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| 49 | self.buffering = buffering
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| 50 | self.canvas.set_size_request(800,600)
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| 51 |
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| 52 | self.canvas.show()
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| 53 |
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| 54 | def map(self):
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| 55 | """
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| 56 | Reveal the ASAPlot graphics window and bring it to the top of the
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| 57 | window stack.
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| 58 | """
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| 59 | self.window.deiconify()
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| 60 | #self.window.lift()
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| 61 |
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| 62 | def position(self):
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| 63 | """
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| 64 | Use the mouse to get a position from a graph.
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| 65 | """
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| 66 |
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| 67 | def position_disable(event):
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| 68 | self.register('button_press', None)
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| 69 | print '%.4f, %.4f' % (event.xdata, event.ydata)
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| 70 |
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| 71 | print 'Press any mouse button...'
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| 72 | self.register('button_press', position_disable)
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| 73 |
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| 74 |
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| 75 | def quit(self):
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| 76 | """
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| 77 | Destroy the ASAPlot graphics window.
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| 78 | """
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| 79 | self.window.destroy()
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| 80 |
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| 81 |
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| 82 | def region(self):
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| 83 | """
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| 84 | Use the mouse to get a rectangular region from a plot.
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| 85 |
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| 86 | The return value is [x0, y0, x1, y1] in world coordinates.
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| 87 | """
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| 88 |
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| 89 | def region_start(event):
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| 90 | height = self.canvas.figure.bbox.height()
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| 91 | self.rect = {'fig': None, 'height': height,
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| 92 | 'x': event.x, 'y': height - event.y,
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| 93 | 'world': [event.xdata, event.ydata,
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| 94 | event.xdata, event.ydata]}
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| 95 | self.register('button_press', None)
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| 96 | self.register('motion_notify', region_draw)
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| 97 | self.register('button_release', region_disable)
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| 98 |
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| 99 | def region_draw(event):
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| 100 | self.canvas._tkcanvas.delete(self.rect['fig'])
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| 101 | self.rect['fig'] = self.canvas._tkcanvas.create_rectangle(
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| 102 | self.rect['x'], self.rect['y'],
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| 103 | event.x, self.rect['height'] - event.y)
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| 104 |
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| 105 | def region_disable(event):
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| 106 | self.register('motion_notify', None)
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| 107 | self.register('button_release', None)
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| 108 |
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| 109 | self.canvas._tkcanvas.delete(self.rect['fig'])
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| 110 |
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| 111 | self.rect['world'][2:4] = [event.xdata, event.ydata]
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| 112 | print '(%.2f, %.2f) (%.2f, %.2f)' % (self.rect['world'][0],
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| 113 | self.rect['world'][1], self.rect['world'][2],
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| 114 | self.rect['world'][3])
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| 115 |
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| 116 | self.register('button_press', region_start)
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| 117 |
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| 118 | # This has to be modified to block and return the result (currently
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| 119 | # printed by region_disable) when that becomes possible in matplotlib.
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| 120 |
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| 121 | return [0.0, 0.0, 0.0, 0.0]
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| 122 |
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| 123 |
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| 124 | def register(self, type=None, func=None):
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| 125 | """
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| 126 | Register, reregister, or deregister events of type 'button_press',
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| 127 | 'button_release', or 'motion_notify'.
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| 128 |
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| 129 | The specified callback function should have the following signature:
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| 130 |
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| 131 | def func(event)
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| 132 |
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| 133 | where event is an MplEvent instance containing the following data:
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| 134 |
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| 135 | name # Event name.
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| 136 | canvas # FigureCanvas instance generating the event.
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| 137 | x = None # x position - pixels from left of canvas.
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| 138 | y = None # y position - pixels from bottom of canvas.
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| 139 | button = None # Button pressed: None, 1, 2, 3.
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| 140 | key = None # Key pressed: None, chr(range(255)), shift,
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| 141 | win, or control
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| 142 | inaxes = None # Axes instance if cursor within axes.
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| 143 | xdata = None # x world coordinate.
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| 144 | ydata = None # y world coordinate.
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| 145 |
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| 146 | For example:
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| 147 |
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| 148 | def mouse_move(event):
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| 149 | print event.xdata, event.ydata
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| 150 |
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| 151 | a = asaplot()
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| 152 | a.register('motion_notify', mouse_move)
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| 153 |
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| 154 | If func is None, the event is deregistered.
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| 155 |
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| 156 | Note that in TkAgg keyboard button presses don't generate an event.
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| 157 | """
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| 158 |
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| 159 | if not self.events.has_key(type): return
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| 160 |
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| 161 | if func is None:
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| 162 | if self.events[type] is not None:
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| 163 | # It's not clear that this does anything.
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| 164 | self.canvas.mpl_disconnect(self.events[type])
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| 165 | self.events[type] = None
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| 166 |
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| 167 | # It seems to be necessary to return events to the toolbar.
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| 168 | if type == 'motion_notify':
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| 169 | self.canvas.mpl_connect(type + '_event',
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| 170 | self.figmgr.toolbar.mouse_move)
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| 171 | elif type == 'button_press':
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| 172 | self.canvas.mpl_connect(type + '_event',
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| 173 | self.figmgr.toolbar.press)
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| 174 | elif type == 'button_release':
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| 175 | self.canvas.mpl_connect(type + '_event',
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| 176 | self.figmgr.toolbar.release)
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| 177 |
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| 178 | else:
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| 179 | self.events[type] = self.canvas.mpl_connect(type + '_event', func)
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| 180 |
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| 181 |
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| 182 | def show(self):
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| 183 | """
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| 184 | Show graphics dependent on the current buffering state.
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| 185 | """
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| 186 | if not self.buffering:
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| 187 | asaplotbase.show(self)
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| 188 | self.window.deiconify()
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| 189 | self.canvas.draw()
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| 190 | self.window.show_all()
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| 191 |
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| 192 | def terminate(self):
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| 193 | """
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| 194 | Clear the figure.
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| 195 | """
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| 196 | self.window.destroy()
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| 197 |
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| 198 | def unmap(self):
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| 199 | """
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| 200 | Hide the ASAPlot graphics window.
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| 201 | """
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| 202 | self.window.wm_withdraw()
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