| 1 | import os |
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| 2 | import matplotlib |
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| 3 | from asap.logging import asaplog, asaplog_post_dec |
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| 4 | |
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| 5 | ###################################### |
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| 6 | ## Notation box window ## |
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| 7 | ###################################### |
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| 8 | class NotationWindowCommon: |
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| 9 | """ |
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| 10 | A base class to define the functions that the backend-based |
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| 11 | GUI notation class must implement to print/modify/delete notes on a canvas. |
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| 12 | |
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| 13 | The following methods *must* be implemented in the backend-based |
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| 14 | parent class: |
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| 15 | _get_note : get text in text box |
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| 16 | _get_anchval : get anchor value selected |
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| 17 | """ |
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| 18 | def __init__(self,master=None): |
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| 19 | #self.parent = master |
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| 20 | self.canvas = master |
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| 21 | self.event = None |
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| 22 | self.note = None |
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| 23 | self.anchors = ["figure","axes","data"] |
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| 24 | self.seltext = {} |
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| 25 | self.numnote = 0 |
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| 26 | |
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| 27 | @asaplog_post_dec |
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| 28 | def print_text(self): |
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| 29 | """ |
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| 30 | """ |
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| 31 | anchor = self.anchors[self._get_anchval()] |
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| 32 | notestr = self._get_note().rstrip("\n") |
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| 33 | if len(notestr.strip()) == 0: |
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| 34 | #self._clear_textbox() |
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| 35 | #print "Empty string!" |
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| 36 | return |
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| 37 | |
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| 38 | myaxes = None |
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| 39 | calcpos = True |
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| 40 | xpos = None |
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| 41 | ypos = None |
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| 42 | if self.seltext: |
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| 43 | # You are modifying a text |
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| 44 | mycanvas = self.canvas |
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| 45 | oldanch = self.seltext['anchor'] |
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| 46 | if oldanch != 'figure': |
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| 47 | myaxes = self.seltext['parent'] |
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| 48 | calcpos = (anchor != oldanch) |
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| 49 | if not calcpos: |
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| 50 | # printing text in the same coord. |
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| 51 | # you don't have to recalc position |
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| 52 | parent = self.seltext['parent'] |
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| 53 | transform = self.seltext['textobj'].get_transform() |
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| 54 | (xpos, ypos) = self.seltext['textobj'].get_position() |
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| 55 | elif anchor == "figure": |
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| 56 | # converting from "axes"/"data" -> "figure" |
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| 57 | (x, y) = self.seltext['textobj']._get_xy_display() |
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| 58 | elif oldanch == "data": |
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| 59 | # converting from "data" -> "axes". |
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| 60 | # need xdata & ydata in the axes |
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| 61 | (x, y) = self.seltext['textobj'].get_position() |
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| 62 | else: |
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| 63 | # converting "figure"/"axes" -> "data" |
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| 64 | # need to calculate xdata & ydata in the axes |
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| 65 | pixpos = self.seltext['textobj']._get_xy_display() |
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| 66 | (w,h) = mycanvas.get_width_height() |
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| 67 | relpos = (pixpos[0]/float(w), pixpos[1]/float(h)) |
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| 68 | if not myaxes: |
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| 69 | myaxes = self._get_axes_from_pos(relpos,mycanvas) |
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| 70 | if not myaxes: |
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| 71 | raise RuntimeError, "Axes resolution failed!" |
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| 72 | (x, y) = self._convert_pix2dat(relpos,myaxes) |
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| 73 | self._remove_seltext() |
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| 74 | elif self.event: |
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| 75 | mycanvas = self.event.canvas |
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| 76 | myaxes = self.event.inaxes |
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| 77 | if myaxes and (anchor != "figure"): |
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| 78 | x = self.event.xdata |
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| 79 | y = self.event.ydata |
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| 80 | else: |
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| 81 | x = self.event.x |
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| 82 | y = self.event.y |
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| 83 | else: |
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| 84 | raise RuntimeError, "No valid position to print data" |
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| 85 | return |
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| 86 | |
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| 87 | # now you know |
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| 88 | picker = True |
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| 89 | # alignment of the text: ha (horizontal), va (vertical) |
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| 90 | ha = 'left' |
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| 91 | #va = 'center' |
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| 92 | va = 'top' |
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| 93 | if not calcpos: |
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| 94 | # you aready know parent, tansform, xpos and ypos |
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| 95 | pass |
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| 96 | elif anchor == "figure": |
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| 97 | # text instance will be appended to mycanvas.figure.texts |
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| 98 | parent = mycanvas.figure |
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| 99 | transform = parent.transFigure |
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| 100 | (w,h) = mycanvas.get_width_height() |
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| 101 | xpos = x/float(w) |
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| 102 | ypos = y/float(h) |
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| 103 | elif myaxes: |
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| 104 | ## text instance will be appended to myaxes.texts |
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| 105 | parent = myaxes |
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| 106 | if anchor == "axes": |
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| 107 | transform = myaxes.transAxes |
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| 108 | lims = myaxes.get_xlim() |
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| 109 | xpos = (x-lims[0])/(lims[1]-lims[0]) |
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| 110 | lims = myaxes.get_ylim() |
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| 111 | ypos = (y-lims[0])/(lims[1]-lims[0]) |
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| 112 | else: |
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| 113 | # anchored on "data" |
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| 114 | transform = myaxes.transData |
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| 115 | xpos = x |
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| 116 | ypos = y |
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| 117 | parent.text(xpos,ypos,notestr,transform=transform, |
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| 118 | ha=ha,va=va,picker=picker) |
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| 119 | mycanvas.draw() |
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| 120 | |
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| 121 | self.numnote += 1 |
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| 122 | |
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| 123 | #self._clear_textbox() |
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| 124 | msg = "Added note: '"+notestr+"'" |
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| 125 | msg += " @["+str(xpos)+", "+str(ypos)+"] ("+anchor+"-coord)" |
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| 126 | msg += "\ntotal number of notes are "+str(self.numnote) |
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| 127 | asaplog.push( msg ) |
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| 128 | |
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| 129 | def _get_axes_from_pos(self,pos,canvas): |
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| 130 | """helper function to get axes of a position in a plot (fig-coord)""" |
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| 131 | if len(pos) != 2: |
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| 132 | raise ValueError, "pixel position should have 2 elements" |
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| 133 | for axes in canvas.figure.axes: |
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| 134 | ##check if pos is in the axes |
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| 135 | #if axes.contains_point(pos): ### seems not working |
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| 136 | # return axes |
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| 137 | axbox = axes.get_position().get_points() |
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| 138 | if (axbox[0][0] <= pos[0] <= axbox[1][0]) and \ |
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| 139 | (axbox[0][1] <= pos[1] <= axbox[1][1]): |
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| 140 | return axes |
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| 141 | return None |
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| 142 | |
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| 143 | def _convert_pix2dat(self,pos,axes): |
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| 144 | """ |
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| 145 | helper function to convert a position in figure-coord (0-1) to |
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| 146 | data-coordinate of the axes |
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| 147 | """ |
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| 148 | # convert a relative position from lower-left of the canvas |
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| 149 | # to a data in axes |
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| 150 | if len(pos) != 2: |
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| 151 | raise ValueError, "pixel position should have 2 elements" |
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| 152 | # left-/bottom-pixel, and pixel width & height of the axes |
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| 153 | bbox = axes.get_position() |
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| 154 | lbpos = bbox.get_points()[0] |
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| 155 | wax = bbox.width |
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| 156 | hax = bbox.height |
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| 157 | # check pos value |
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| 158 | if (pos[0] < lbpos[0]) or (pos[1] < lbpos[1]) \ |
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| 159 | or (pos[0] > (lbpos[0]+wax)) or (pos[1] > (lbpos[1]+hax)): |
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| 160 | raise ValueError, "The position is out of the axes" |
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| 161 | xlims = axes.get_xlim() |
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| 162 | ylims = axes.get_ylim() |
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| 163 | wdat = xlims[1] - xlims[0] |
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| 164 | hdat = ylims[1] - ylims[0] |
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| 165 | xdat = xlims[0] + wdat*(pos[0] - lbpos[0])/wax |
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| 166 | ydat = ylims[0] + hdat*(pos[1] - lbpos[1])/hax |
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| 167 | return (xdat, ydat) |
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| 168 | |
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| 169 | @asaplog_post_dec |
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| 170 | def _get_selected_text(self,event): |
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| 171 | """helper function to return a dictionary of the nearest note to the event.""" |
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| 172 | (w,h) = event.canvas.get_width_height() |
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| 173 | dist2 = w*w+h*h |
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| 174 | selected = {} |
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| 175 | for textobj in self.canvas.figure.texts: |
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| 176 | if textobj.contains(event)[0]: |
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| 177 | d2 = self._get_text_dist2(event,textobj) |
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| 178 | if dist2 >= d2: |
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| 179 | dist2 = d2 |
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| 180 | selected = {'anchor': 'figure', \ |
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| 181 | 'parent': event.canvas.figure, 'textobj': textobj} |
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| 182 | msg = "Fig loop: a text, '"+textobj.get_text()+"', at " |
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| 183 | msg += str(textobj.get_position())+" detected" |
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| 184 | print msg |
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| 185 | for ax in self.canvas.figure.axes: |
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| 186 | for textobj in ax.texts: |
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| 187 | if textobj.contains(event)[0]: |
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| 188 | d2 = self._get_text_dist2(event,textobj) |
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| 189 | if dist2 >= d2: |
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| 190 | anchor='axes' |
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| 191 | if ax.transData == textobj.get_transform(): |
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| 192 | anchor = 'data' |
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| 193 | selected = {'anchor': anchor, \ |
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| 194 | 'parent': ax, 'textobj': textobj} |
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| 195 | msg = "Ax loop: a text, '"+textobj.get_text()+"', at " |
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| 196 | msg += str(textobj.get_position())+" detected" |
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| 197 | print msg |
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| 198 | |
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| 199 | if selected: |
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| 200 | msg = "Selected (modify/delete): '"+textobj.get_text() |
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| 201 | msg += "' @"+str(textobj.get_position()) |
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| 202 | msg += " ("+selected['anchor']+"-coord)" |
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| 203 | asaplog.push(msg) |
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| 204 | |
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| 205 | return selected |
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| 206 | |
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| 207 | def _get_text_dist2(self,event,textobj): |
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| 208 | """ |
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| 209 | helper function to calculate square of distance between |
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| 210 | a event position and a text object. |
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| 211 | """ |
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| 212 | (x,y) = textobj._get_xy_display() |
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| 213 | return (x-event.x)**2+(y-event.y)**2 |
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| 214 | |
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| 215 | def delete_note(self): |
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| 216 | """ |
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| 217 | Remove selected note. |
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| 218 | """ |
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| 219 | #print "You selected 'OK'" |
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| 220 | self._remove_seltext() |
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| 221 | self.canvas.draw() |
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| 222 | |
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| 223 | @asaplog_post_dec |
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| 224 | def _remove_seltext(self): |
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| 225 | """helper function to remove the selected note""" |
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| 226 | if len(self.seltext) < 3: |
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| 227 | raise ValueError, "Don't under stand selected text obj." |
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| 228 | return |
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| 229 | try: |
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| 230 | self.seltext['textobj'].remove() |
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| 231 | except NotImplementedError: |
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| 232 | self.seltext['parent'].texts.pop(self.seltext['parent'].texts.index(self.seltext['textobj'])) |
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| 233 | self.numnote -= 1 |
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| 234 | |
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| 235 | textobj = self.seltext['textobj'] |
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| 236 | msg = "Deleted note: '"+textobj.get_text()+"'" |
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| 237 | msg += "@"+str(textobj.get_position())\ |
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| 238 | +" ("+self.seltext['anchor']+"-coord)" |
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| 239 | msg += "\ntotal number of notes are "+str(self.numnote) |
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| 240 | asaplog.push( msg ) |
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| 241 | |
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| 242 | self.seltext = {} |
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| 243 | |
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| 244 | @asaplog_post_dec |
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| 245 | def cancel_delete(self): |
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| 246 | """ |
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| 247 | Cancel deleting the selected note. |
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| 248 | Fired when 'Cancel' button selected on confirmation dialog |
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| 249 | """ |
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| 250 | asaplog.push( "Cancel deleting: '"+self.seltext['textobj'].get_text()+"'" ) |
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| 251 | self.seltext = {} |
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| 252 | |
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| 253 | |
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| 254 | ##################################### |
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| 255 | ## Backend dependent Classes ## |
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| 256 | ##################################### |
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| 257 | ### TkAgg |
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| 258 | if matplotlib.get_backend() == 'TkAgg': |
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| 259 | import Tkinter as Tk |
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| 260 | import tkMessageBox |
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| 261 | |
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| 262 | class NotationWindowTkAgg(NotationWindowCommon): |
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| 263 | """ |
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| 264 | Backend based |
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| 265 | """ |
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| 266 | def __init__(self,master=None): |
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| 267 | self.parent = master._tkcanvas |
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| 268 | NotationWindowCommon.__init__(self,master=master) |
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| 269 | self.anchval = None |
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| 270 | self.textwin = self._create_textwindow(master=None) |
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| 271 | self.menu = self._create_modmenu(master=self.parent) |
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| 272 | |
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| 273 | ### Notation window widget |
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| 274 | def _create_textwindow(self,master=None): |
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| 275 | twin = Tk.Toplevel(padx=3,pady=3) |
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| 276 | twin.title("Annotation") |
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| 277 | twin.resizable(width=True,height=True) |
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| 278 | self.textbox = self._NotationBox(parent=twin) |
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| 279 | self.radio = self._AnchorRadio(parent=twin) |
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| 280 | self.actionbs = self._ActionButtons(parent=twin) |
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| 281 | |
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| 282 | self.textbox.pack(side=Tk.TOP,fill=Tk.BOTH,expand=True) |
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| 283 | self.actionbs.pack(side=Tk.BOTTOM) |
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| 284 | self.radio.pack(side=Tk.BOTTOM) |
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| 285 | #twin.deiconify() |
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| 286 | #twin.minsize(width=twin.winfo_width(),height=twin.winfo_height()) |
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| 287 | twin.withdraw() |
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| 288 | return twin |
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| 289 | |
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| 290 | def _NotationBox(self,parent=None): |
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| 291 | textbox = Tk.Text(master=parent,background='white', |
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| 292 | height=2,width=20,cursor="xterm", |
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| 293 | padx=2,pady=2,undo=True,maxundo=10) |
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| 294 | return textbox |
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| 295 | |
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| 296 | def _AnchorRadio(self,parent=None): |
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| 297 | radio = Tk.LabelFrame(master=parent,text="anchor", |
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| 298 | labelanchor="nw",padx=5,pady=3) |
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| 299 | self.anchval = Tk.IntVar(master=radio,value=0) |
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| 300 | self.rFig = self._NewRadioButton(radio,"figure",state=Tk.NORMAL, |
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| 301 | variable=self.anchval,value=0, |
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| 302 | side=Tk.LEFT) |
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| 303 | self.rAxis = self._NewRadioButton(radio,"panel",state=Tk.DISABLED, |
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| 304 | variable=self.anchval,value=1, |
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| 305 | side=Tk.LEFT) |
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| 306 | self.rData = self._NewRadioButton(radio,"data",state=Tk.DISABLED, |
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| 307 | variable=self.anchval,value=2, |
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| 308 | side=Tk.LEFT) |
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| 309 | # set initial selection "figure" |
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| 310 | self.anchval.set(0) |
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| 311 | return radio |
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| 312 | |
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| 313 | def _NewRadioButton(self,parent,text,state=Tk.NORMAL,variable=None,value=None,side=Tk.LEFT): |
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| 314 | rb = Tk.Radiobutton(master=parent,text=text,state=state, |
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| 315 | variable=variable,value=value) |
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| 316 | rb.pack(side=side) |
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| 317 | return rb |
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| 318 | |
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| 319 | def _enable_radio(self): |
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| 320 | self.rAxis.config(state=Tk.NORMAL) |
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| 321 | self.rData.config(state=Tk.NORMAL) |
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| 322 | #self.rFig.config(state=Tk.NORMAL) |
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| 323 | self.rFig.select() |
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| 324 | |
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| 325 | def _reset_radio(self): |
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| 326 | self.rAxis.config(state=Tk.DISABLED) |
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| 327 | self.rData.config(state=Tk.DISABLED) |
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| 328 | self.rFig.config(state=Tk.NORMAL) |
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| 329 | self.rFig.select() |
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| 330 | |
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| 331 | def _select_radio(self,selection): |
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| 332 | if not selection in self.anchors: |
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| 333 | return |
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| 334 | if selection == "data": |
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| 335 | self.rData.select() |
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| 336 | elif selection == "axes": |
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| 337 | self.rAxis.select() |
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| 338 | else: |
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| 339 | self.rFig.select() |
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| 340 | |
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| 341 | def _get_anchval(self): |
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| 342 | return self.anchval.get() |
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| 343 | |
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| 344 | def _get_note(self): |
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| 345 | return self.textbox.get("1.0",Tk.END) |
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| 346 | |
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| 347 | def _clear_textbox(self): |
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| 348 | self.textbox.delete("1.0",Tk.END) |
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| 349 | |
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| 350 | def _set_note(self,note=None): |
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| 351 | self._clear_textbox() |
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| 352 | if len(note) >0: |
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| 353 | self.textbox.insert("1.0",note) |
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| 354 | |
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| 355 | def _ActionButtons(self,parent=None): |
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| 356 | actbuts = Tk.Frame(master=parent) |
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| 357 | bCancel = self._NewButton(actbuts,"cancel",self._cancel_text,side=Tk.LEFT) |
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| 358 | bPrint = self._NewButton(actbuts,"print", self._print_text,side=Tk.LEFT) |
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| 359 | return actbuts |
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| 360 | |
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| 361 | def _NewButton(self, parent, text, command, side=Tk.LEFT): |
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| 362 | if(os.uname()[0] == 'Darwin'): |
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| 363 | b = Tk.Button(master=parent, text=text, command=command) |
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| 364 | else: |
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| 365 | b = Tk.Button(master=parent, text=text, padx=2, pady=2, command=command) |
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| 366 | b.pack(side=side) |
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| 367 | return b |
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| 368 | |
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| 369 | def _cancel_text(self): |
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| 370 | self.close_textwindow() |
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| 371 | |
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| 372 | def _print_text(self): |
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| 373 | self.print_text() |
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| 374 | self.close_textwindow() |
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| 375 | |
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| 376 | def load_textwindow(self,event): |
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| 377 | """ |
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| 378 | Load text window at a event position to add a note on a plot. |
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| 379 | Parameter: |
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| 380 | event: an even object to specify the position to load |
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| 381 | text window. |
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| 382 | """ |
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| 383 | self.close_modmenu() |
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| 384 | if event.canvas._tkcanvas != self.parent: |
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| 385 | raise RuntimeError, "Got invalid event!" |
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| 386 | |
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| 387 | self.event = event |
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| 388 | is_ax = (event.inaxes != None) |
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| 389 | (xpix, ypix) = self._disppix2screen(event.x, event.y) |
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| 390 | offset = 5 |
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| 391 | self.show_textwindow(xpix+offset,ypix+offset,enableaxes=is_ax) |
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| 392 | |
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| 393 | def show_textwindow(self,xpix,ypix,basetext=None,enableaxes=False): |
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| 394 | """ |
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| 395 | Load text window at a position of screen to add a note on a plot. |
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| 396 | Parameters: |
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| 397 | xpix, ypix: a pixel position from Upper-left corner |
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| 398 | of the screen. |
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| 399 | basetext: None (default) or any string. |
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| 400 | A string to be printed on text box when loaded. |
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| 401 | enable axes: False (default) or True. |
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| 402 | If True, 'panel' & 'data' radio button is enabled. |
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| 403 | """ |
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| 404 | if not self.textwin: return |
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| 405 | self._reset_radio() |
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| 406 | if enableaxes: |
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| 407 | self._enable_radio() |
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| 408 | self.textwin.deiconify() |
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| 409 | (w,h) = self.textwin.minsize() |
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| 410 | if w*h <= 1: |
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| 411 | self.textwin.minsize(width=self.textwin.winfo_width(), |
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| 412 | height=self.textwin.winfo_height()) |
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| 413 | (w,h) = self.textwin.minsize() |
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| 414 | self.textwin.geometry("%sx%s+%s+%s"%(w,h,xpix,ypix)) |
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| 415 | |
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| 416 | def close_textwindow(self): |
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| 417 | """Close text window.""" |
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| 418 | self.seltext = {} |
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| 419 | self._reset_radio() |
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| 420 | self._clear_textbox() |
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| 421 | self.textwin.withdraw() |
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| 422 | |
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| 423 | |
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| 424 | ### Modify/Delete menu widget |
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| 425 | def _create_modmenu(self,master=None): |
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| 426 | if master: |
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| 427 | self.parent = master |
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| 428 | if not self.parent: |
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| 429 | return False |
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| 430 | menu = Tk.Menu(master=self.parent,tearoff=False) |
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| 431 | menu.add_command(label="Modify",command=self._modify_note) |
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| 432 | menu.add_command(label="Delete",command=self._delnote_dialog) |
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| 433 | return menu |
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| 434 | |
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| 435 | def load_modmenu(self,event): |
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| 436 | """ |
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| 437 | Load cascade menu at a event position to modify or delete |
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| 438 | selected text. |
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| 439 | Parameter: |
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| 440 | event: an even object to specify the position to load |
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| 441 | text window. |
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| 442 | """ |
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| 443 | self.close_textwindow() |
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| 444 | self.seltext = self._get_selected_text(event) |
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| 445 | if len(self.seltext) == 3: |
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| 446 | tkcanvas = event.canvas._tkcanvas |
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| 447 | xpos = tkcanvas.winfo_rootx() + int(event.x) |
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| 448 | ypos = tkcanvas.winfo_rooty() \ |
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| 449 | + tkcanvas.winfo_height() - int(event.y) |
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| 450 | self.menu.post(xpos,ypos) |
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| 451 | |
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| 452 | def close_modmenu(self): |
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| 453 | """Close cascade menu.""" |
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| 454 | self.seltext = {} |
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| 455 | self.menu.unpost() |
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| 456 | |
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| 457 | ### load text window for modification |
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| 458 | def _modify_note(self): |
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| 459 | """helper function to load text window to modify selected note""" |
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| 460 | #print "Modify selected!!" |
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| 461 | textobj = self.seltext['textobj'] |
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| 462 | (xtx, ytx) = textobj._get_xy_display() |
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| 463 | is_ax = (self.seltext['anchor'] != 'figure') |
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| 464 | if not is_ax: |
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| 465 | # previous anchor is figure |
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| 466 | pos = textobj.get_position() |
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| 467 | is_ax = (self._get_axes_from_pos(pos,self.canvas) != None) |
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| 468 | |
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| 469 | (xpix, ypix) = self._disppix2screen(xtx,ytx) |
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| 470 | offset = int(textobj.get_size())*2 |
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| 471 | self.show_textwindow(xpix,ypix+offset,basetext=textobj.get_text(),\ |
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| 472 | enableaxes=is_ax) |
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| 473 | self._select_radio(self.seltext['anchor']) |
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| 474 | self._set_note(textobj.get_text()) |
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| 475 | |
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| 476 | ### close all widgets |
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| 477 | def close_widgets(self): |
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| 478 | """Close note window and menu""" |
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| 479 | self.close_textwindow() |
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| 480 | self.close_modmenu() |
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| 481 | |
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| 482 | ### dialog to confirm deleting note |
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| 483 | def _delnote_dialog(self): |
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| 484 | remind = "Delete text?\n '"+self.seltext['textobj'].get_text()+"'" |
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| 485 | answer = tkMessageBox.askokcancel(parent=self.parent,title="Delete?", |
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| 486 | message=remind, |
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| 487 | default=tkMessageBox.CANCEL) |
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| 488 | if answer: |
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| 489 | self.delete_note() |
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| 490 | else: |
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| 491 | self.cancel_delete() |
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| 492 | |
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| 493 | ### helper functions |
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| 494 | def _disppix2screen(self,xpixd,ypixd): |
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| 495 | # calculate a pixel position form Upper-left of the SCREEN |
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| 496 | # from a pixel from Lower-left of the CANVAS (e.g., event.x/y) |
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| 497 | xpixs = self.parent.winfo_rootx() + xpixd |
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| 498 | ypixs = self.parent.winfo_rooty() + self.parent.winfo_height() \ |
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| 499 | - ypixd |
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| 500 | return (int(xpixs), int(ypixs)) |
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| 501 | |
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