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 | Print a note on a canvas specified with the Notation window. |
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31 | Called when 'print' button selected on the window. |
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32 | """ |
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33 | anchor = self.anchors[self._get_anchval()] |
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34 | notestr = self._get_note().rstrip("\n") |
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35 | if len(notestr.strip()) == 0: |
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36 | #self._clear_textbox() |
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37 | #print "Empty string!" |
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38 | return |
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39 | |
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40 | myaxes = None |
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41 | calcpos = True |
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42 | xpos = None |
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43 | ypos = None |
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44 | if self.seltext: |
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45 | # You are modifying a text |
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46 | mycanvas = self.canvas |
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47 | oldanch = self.seltext['anchor'] |
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48 | if oldanch != 'figure': |
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49 | myaxes = self.seltext['parent'] |
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50 | calcpos = (anchor != oldanch) |
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51 | if not calcpos: |
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52 | # printing text in the same coord. |
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53 | # you don't have to recalc position |
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54 | parent = self.seltext['parent'] |
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55 | transform = self.seltext['textobj'].get_transform() |
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56 | (xpos, ypos) = self.seltext['textobj'].get_position() |
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57 | elif anchor == "figure": |
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58 | # converting from "axes"/"data" -> "figure" |
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59 | (x, y) = self.seltext['textobj']._get_xy_display() |
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60 | elif oldanch == "data": |
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61 | # converting from "data" -> "axes". |
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62 | # need xdata & ydata in the axes |
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63 | (x, y) = self.seltext['textobj'].get_position() |
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64 | else: |
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65 | # converting "figure"/"axes" -> "data" |
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66 | # need to calculate xdata & ydata in the axes |
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67 | pixpos = self.seltext['textobj']._get_xy_display() |
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68 | (w,h) = mycanvas.get_width_height() |
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69 | relpos = (pixpos[0]/float(w), pixpos[1]/float(h)) |
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70 | if not myaxes: |
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71 | myaxes = self._get_axes_from_pos(relpos,mycanvas) |
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72 | if not myaxes: |
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73 | raise RuntimeError, "Axes resolution failed!" |
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74 | (x, y) = self._convert_pix2dat(relpos,myaxes) |
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75 | self._remove_seltext() |
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76 | elif self.event: |
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77 | mycanvas = self.event.canvas |
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78 | myaxes = self.event.inaxes |
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79 | if myaxes and (anchor != "figure"): |
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80 | x = self.event.xdata |
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81 | y = self.event.ydata |
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82 | else: |
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83 | x = self.event.x |
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84 | y = self.event.y |
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85 | else: |
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86 | raise RuntimeError, "No valid position to print data" |
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87 | return |
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88 | |
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89 | # now you know |
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90 | picker = True |
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91 | # alignment of the text: ha (horizontal), va (vertical) |
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92 | ha = 'left' |
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93 | #va = 'center' |
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94 | va = 'top' |
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95 | if not calcpos: |
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96 | # you aready know parent, tansform, xpos and ypos |
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97 | pass |
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98 | elif anchor == "figure": |
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99 | # text instance will be appended to mycanvas.figure.texts |
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100 | parent = mycanvas.figure |
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101 | transform = parent.transFigure |
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102 | (w,h) = mycanvas.get_width_height() |
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103 | xpos = x/float(w) |
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104 | ypos = y/float(h) |
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105 | elif myaxes: |
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106 | ## text instance will be appended to myaxes.texts |
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107 | parent = myaxes |
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108 | if anchor == "axes": |
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109 | transform = myaxes.transAxes |
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110 | lims = myaxes.get_xlim() |
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111 | xpos = (x-lims[0])/(lims[1]-lims[0]) |
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112 | lims = myaxes.get_ylim() |
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113 | ypos = (y-lims[0])/(lims[1]-lims[0]) |
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114 | else: |
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115 | # anchored on "data" |
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116 | transform = myaxes.transData |
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117 | xpos = x |
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118 | ypos = y |
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119 | parent.text(xpos,ypos,notestr,transform=transform, |
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120 | ha=ha,va=va,picker=picker) |
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121 | mycanvas.draw() |
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122 | |
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123 | self.numnote += 1 |
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124 | |
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125 | #self._clear_textbox() |
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126 | msg = "Added note: '"+notestr+"'" |
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127 | msg += " @["+str(xpos)+", "+str(ypos)+"] ("+anchor+"-coord)" |
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128 | msg += "\ntotal number of notes are "+str(self.numnote) |
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129 | asaplog.push( msg ) |
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130 | |
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131 | def _get_axes_from_pos(self,pos,canvas): |
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132 | """helper function to get axes of a position in a plot (fig-coord)""" |
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133 | if len(pos) != 2: |
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134 | raise ValueError, "pixel position should have 2 elements" |
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135 | for axes in canvas.figure.axes: |
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136 | ##check if pos is in the axes |
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137 | #if axes.contains_point(pos): ### seems not working |
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138 | # return axes |
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139 | try: |
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140 | axbox = axes.get_position().get_points() |
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141 | except AttributeError: ### WORKAROUND for old matplotlib |
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142 | axbox = self._oldpos2new(axes.get_position()) |
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143 | if (axbox[0][0] <= pos[0] <= axbox[1][0]) and \ |
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144 | (axbox[0][1] <= pos[1] <= axbox[1][1]): |
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145 | return axes |
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146 | return None |
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147 | |
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148 | ### WORKAROUND for old matplotlib |
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149 | def _oldpos2new(self,oldpos=None): |
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150 | return [[oldpos[0],oldpos[1]],[oldpos[0]+oldpos[2],oldpos[1]+oldpos[3]]] |
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151 | |
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152 | def _convert_pix2dat(self,pos,axes): |
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153 | """ |
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154 | helper function to convert a position in figure-coord (0-1) to |
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155 | data-coordinate of the axes |
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156 | """ |
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157 | # convert a relative position from lower-left of the canvas |
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158 | # to a data in axes |
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159 | if len(pos) != 2: |
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160 | raise ValueError, "pixel position should have 2 elements" |
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161 | # left-/bottom-pixel, and pixel width & height of the axes |
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162 | bbox = axes.get_position() |
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163 | try: |
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164 | axpos = bbox.get_points() |
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165 | except AttributeError: ### WORKAROUND for old matplotlib |
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166 | axpos = self._oldpos2new(bbox) |
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167 | # check pos value |
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168 | if (pos[0] < axpos[0][0]) or (pos[1] < axpos[0][1]) \ |
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169 | or (pos[0] > axpos[1][0]) or (pos[1] > axpos[1][1]): |
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170 | raise ValueError, "The position is out of the axes" |
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171 | xlims = axes.get_xlim() |
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172 | ylims = axes.get_ylim() |
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173 | wdat = xlims[1] - xlims[0] |
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174 | hdat = ylims[1] - ylims[0] |
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175 | xdat = xlims[0] + wdat*(pos[0] - axpos[0][0])/(axpos[1][0] - axpos[0][0]) |
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176 | ydat = ylims[0] + hdat*(pos[1] - axpos[0][1])/(axpos[1][1] - axpos[0][1]) |
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177 | return (xdat, ydat) |
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178 | |
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179 | @asaplog_post_dec |
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180 | def _get_selected_text(self,event): |
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181 | """helper function to return a dictionary of the nearest note to the event.""" |
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182 | (w,h) = event.canvas.get_width_height() |
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183 | dist2 = w*w+h*h |
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184 | selected = {} |
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185 | for textobj in self.canvas.figure.texts: |
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186 | if textobj.contains(event)[0]: |
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187 | d2 = self._get_text_dist2(event,textobj) |
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188 | if dist2 >= d2: |
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189 | dist2 = d2 |
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190 | selected = {'anchor': 'figure', \ |
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191 | 'parent': event.canvas.figure, 'textobj': textobj} |
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192 | msg = "Fig loop: a text, '"+textobj.get_text()+"', at " |
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193 | msg += str(textobj.get_position())+" detected" |
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194 | #print msg |
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195 | for ax in self.canvas.figure.axes: |
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196 | for textobj in ax.texts: |
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197 | if textobj.contains(event)[0]: |
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198 | d2 = self._get_text_dist2(event,textobj) |
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199 | if dist2 >= d2: |
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200 | anchor='axes' |
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201 | if ax.transData == textobj.get_transform(): |
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202 | anchor = 'data' |
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203 | selected = {'anchor': anchor, \ |
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204 | 'parent': ax, 'textobj': textobj} |
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205 | msg = "Ax loop: a text, '"+textobj.get_text()+"', at " |
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206 | msg += str(textobj.get_position())+" detected" |
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207 | #print msg |
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208 | |
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209 | if selected: |
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210 | msg = "Selected (modify/delete): '"+selected['textobj'].get_text() |
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211 | msg += "' @"+str(selected['textobj'].get_position()) |
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212 | msg += " ("+selected['anchor']+"-coord)" |
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213 | asaplog.push(msg) |
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214 | |
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215 | return selected |
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216 | |
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217 | def _get_text_dist2(self,event,textobj): |
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218 | """ |
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219 | helper function to calculate square of distance between |
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220 | a event position and a text object. |
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221 | """ |
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222 | (x,y) = textobj._get_xy_display() |
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223 | return (x-event.x)**2+(y-event.y)**2 |
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224 | |
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225 | def delete_note(self): |
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226 | """ |
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227 | Remove selected note. |
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228 | """ |
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229 | #print "You selected 'OK'" |
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230 | self._remove_seltext() |
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231 | self.canvas.draw() |
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232 | |
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233 | @asaplog_post_dec |
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234 | def _remove_seltext(self): |
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235 | """helper function to remove the selected note""" |
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236 | if len(self.seltext) < 3: |
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237 | raise ValueError, "Don't under stand selected text obj." |
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238 | return |
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239 | try: |
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240 | self.seltext['textobj'].remove() |
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241 | except NotImplementedError: |
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242 | self.seltext['parent'].texts.pop(self.seltext['parent'].texts.index(self.seltext['textobj'])) |
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243 | self.numnote -= 1 |
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244 | |
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245 | textobj = self.seltext['textobj'] |
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246 | msg = "Deleted note: '"+textobj.get_text()+"'" |
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247 | msg += "@"+str(textobj.get_position())\ |
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248 | +" ("+self.seltext['anchor']+"-coord)" |
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249 | msg += "\ntotal number of notes are "+str(self.numnote) |
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250 | asaplog.push( msg ) |
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251 | |
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252 | self.seltext = {} |
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253 | |
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254 | @asaplog_post_dec |
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255 | def cancel_delete(self): |
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256 | """ |
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257 | Cancel deleting the selected note. |
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258 | Called when 'cancel' button selected on confirmation dialog. |
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259 | """ |
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260 | asaplog.push( "Cancel deleting: '"+self.seltext['textobj'].get_text()+"'" ) |
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261 | self.seltext = {} |
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262 | |
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263 | |
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264 | ##################################### |
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265 | ## Backend dependent Classes ## |
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266 | ##################################### |
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267 | ### TkAgg |
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268 | if matplotlib.get_backend() == 'TkAgg': |
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269 | import Tkinter as Tk |
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270 | import tkMessageBox |
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271 | |
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272 | class NotationWindowTkAgg(NotationWindowCommon): |
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273 | """ |
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274 | Backend based class to create widgets to add, modify, or delete |
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275 | note on the plot. |
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276 | |
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277 | Note: |
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278 | Press LEFT-mouse button on the plot to ADD a note on the canvas. |
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279 | A notation window will be loaded for specifying note string and |
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280 | anchor. The note will be anchored on a position in whether figure- |
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281 | (0-1 relative in a figure), panel- (0-1 relative in a plot axes), |
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282 | or data-coordinate (data value in a plot axes). |
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283 | Press RIGHT-mouse button on a note to MODIFY/DELETE it. A cascade |
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284 | menu will be displayed and you can select an operation. |
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285 | """ |
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286 | def __init__(self,master=None): |
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287 | self.parent = master._tkcanvas |
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288 | NotationWindowCommon.__init__(self,master=master) |
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289 | self.anchval = None |
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290 | self.textwin = self._create_textwindow(master=None) |
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291 | self.menu = self._create_modmenu(master=self.parent) |
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292 | |
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293 | ### Notation window widget |
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294 | def _create_textwindow(self,master=None): |
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295 | """Create notation window widget and iconfy it""" |
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296 | twin = Tk.Toplevel(padx=3,pady=3) |
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297 | twin.title("Notation") |
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298 | twin.resizable(width=True,height=True) |
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299 | self.textbox = self._NotationBox(parent=twin) |
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300 | self.radio = self._AnchorRadio(parent=twin) |
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301 | self.actionbs = self._ActionButtons(parent=twin) |
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302 | |
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303 | self.textbox.pack(side=Tk.TOP,fill=Tk.BOTH,expand=True) |
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304 | self.actionbs.pack(side=Tk.BOTTOM) |
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305 | self.radio.pack(side=Tk.BOTTOM) |
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306 | #twin.deiconify() |
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307 | #twin.minsize(width=twin.winfo_width(),height=twin.winfo_height()) |
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308 | #twin.lift() |
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309 | twin.withdraw() |
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310 | return twin |
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311 | |
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312 | def _NotationBox(self,parent=None): |
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313 | textbox = Tk.Text(master=parent,background='white', |
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314 | height=2,width=20,cursor="xterm", |
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315 | padx=2,pady=2,undo=True,maxundo=10, |
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316 | relief='sunken',borderwidth=3, |
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317 | state=Tk.NORMAL,takefocus=1) |
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318 | return textbox |
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319 | |
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320 | def _AnchorRadio(self,parent=None): |
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321 | radio = Tk.LabelFrame(master=parent,text="anchor", |
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322 | labelanchor="nw",padx=5,pady=3) |
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323 | self.anchval = Tk.IntVar(master=radio,value=0) |
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324 | self.rFig = self._NewRadioButton(radio,"figure",state=Tk.NORMAL, |
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325 | variable=self.anchval,value=0, |
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326 | side=Tk.LEFT) |
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327 | self.rAxis = self._NewRadioButton(radio,"panel",state=Tk.DISABLED, |
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328 | variable=self.anchval,value=1, |
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329 | side=Tk.LEFT) |
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330 | self.rData = self._NewRadioButton(radio,"data",state=Tk.DISABLED, |
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331 | variable=self.anchval,value=2, |
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332 | side=Tk.LEFT) |
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333 | # set initial selection "figure" |
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334 | self.anchval.set(0) |
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335 | return radio |
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336 | |
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337 | def _NewRadioButton(self,parent,text,state=Tk.NORMAL,variable=None,value=None,side=Tk.LEFT): |
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338 | rb = Tk.Radiobutton(master=parent,text=text,state=state, |
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339 | variable=variable,value=value) |
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340 | rb.pack(side=side) |
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341 | return rb |
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342 | |
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343 | def _enable_radio(self): |
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344 | """Enable 'panel' and 'data' radio button""" |
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345 | self.rAxis.config(state=Tk.NORMAL) |
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346 | self.rData.config(state=Tk.NORMAL) |
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347 | #self.rFig.config(state=Tk.NORMAL) |
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348 | self.rFig.select() |
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349 | |
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350 | def _reset_radio(self): |
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351 | """Disable 'panel' and 'data' radio button""" |
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352 | self.rAxis.config(state=Tk.DISABLED) |
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353 | self.rData.config(state=Tk.DISABLED) |
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354 | self.rFig.config(state=Tk.NORMAL) |
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355 | self.rFig.select() |
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356 | |
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357 | def _select_radio(self,selection): |
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358 | """Select a specified radio button""" |
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359 | if not selection in self.anchors: |
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360 | return |
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361 | if selection == "data": |
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362 | self.rData.select() |
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363 | elif selection == "axes": |
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364 | self.rAxis.select() |
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365 | else: |
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366 | self.rFig.select() |
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367 | |
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368 | def _get_anchval(self): |
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369 | """Returns a integer of a selected radio button""" |
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370 | return self.anchval.get() |
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371 | |
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372 | def _get_note(self): |
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373 | """Returns a note string specified in the text box""" |
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374 | return self.textbox.get("1.0",Tk.END) |
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375 | |
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376 | def _clear_textbox(self): |
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377 | """Clear the text box""" |
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378 | self.textbox.delete("1.0",Tk.END) |
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379 | |
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380 | def _set_note(self,note=None): |
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381 | """Set a note string to the text box""" |
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382 | self._clear_textbox() |
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383 | if len(note) >0: |
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384 | self.textbox.insert("1.0",note) |
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385 | |
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386 | def _ActionButtons(self,parent=None): |
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387 | actbuts = Tk.Frame(master=parent) |
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388 | bCancel = self._NewButton(actbuts,"cancel",self._cancel_text,side=Tk.LEFT) |
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389 | bPrint = self._NewButton(actbuts,"print", self._print_text,side=Tk.LEFT) |
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390 | return actbuts |
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391 | |
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392 | def _NewButton(self, parent, text, command, side=Tk.LEFT): |
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393 | if(os.uname()[0] == 'Darwin'): |
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394 | b = Tk.Button(master=parent, text=text, command=command) |
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395 | else: |
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396 | b = Tk.Button(master=parent, text=text, padx=2, pady=2, command=command) |
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397 | b.pack(side=side) |
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398 | return b |
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399 | |
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400 | def _cancel_text(self): |
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401 | """ |
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402 | Cancel adding/modifying a note and close notaion window. |
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403 | called when 'cancel' is selected. |
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404 | """ |
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405 | self.close_textwindow() |
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406 | |
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407 | def _print_text(self): |
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408 | """ |
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409 | Add/Modify a note. Called when 'print' is selected on the |
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410 | notation window. |
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411 | """ |
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412 | self.print_text() |
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413 | self.close_textwindow() |
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414 | |
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415 | def load_textwindow(self,event): |
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416 | """ |
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417 | Load text window at a event position to add a note on a plot. |
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418 | Parameter: |
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419 | event: an even object to specify the position to load |
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420 | text window. |
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421 | """ |
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422 | self.close_modmenu() |
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423 | if event.canvas._tkcanvas != self.parent: |
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424 | raise RuntimeError, "Got invalid event!" |
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425 | |
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426 | self.event = event |
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427 | is_ax = (event.inaxes != None) |
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428 | (xpix, ypix) = self._disppix2screen(event.x, event.y) |
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429 | offset = 5 |
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430 | self.show_textwindow(xpix+offset,ypix+offset,enableaxes=is_ax) |
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431 | |
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432 | def show_textwindow(self,xpix,ypix,basetext=None,enableaxes=False): |
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433 | """ |
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434 | Load text window at a position of screen to add a note on a plot. |
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435 | Parameters: |
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436 | xpix, ypix: a pixel position from Upper-left corner |
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437 | of the screen. |
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438 | basetext: None (default) or any string. |
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439 | A string to be printed on text box when loaded. |
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440 | enable axes: False (default) or True. |
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441 | If True, 'panel' & 'data' radio button is enabled. |
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442 | """ |
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443 | if not self.textwin: return |
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444 | self._reset_radio() |
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445 | if enableaxes: |
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446 | self._enable_radio() |
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447 | self.textwin.deiconify() |
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448 | (w,h) = self.textwin.minsize() |
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449 | if w*h <= 1: |
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450 | self.textwin.minsize(width=self.textwin.winfo_width(), |
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451 | height=self.textwin.winfo_height()) |
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452 | (w,h) = self.textwin.minsize() |
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453 | self.textwin.geometry("%sx%s+%s+%s"%(w,h,xpix,ypix)) |
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454 | self.textwin.lift() |
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455 | |
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456 | def close_textwindow(self): |
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457 | """Close text window.""" |
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458 | self.seltext = {} |
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459 | self._reset_radio() |
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460 | self._clear_textbox() |
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461 | self.textwin.withdraw() |
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462 | |
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463 | |
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464 | ### Modify/Delete menu widget |
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465 | def _create_modmenu(self,master=None): |
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466 | """Create modify/delete menu widget""" |
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467 | if master: |
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468 | self.parent = master |
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469 | if not self.parent: |
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470 | return False |
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471 | menu = Tk.Menu(master=self.parent,tearoff=False) |
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472 | menu.add_command(label="Modify",command=self._modify_note) |
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473 | menu.add_command(label="Delete",command=self._delnote_dialog) |
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474 | return menu |
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475 | |
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476 | def load_modmenu(self,event): |
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477 | """ |
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478 | Load cascade menu at a event position to modify or delete |
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479 | selected text. |
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480 | Parameter: |
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481 | event: an even object to specify the position to load |
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482 | text window. |
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483 | """ |
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484 | self.close_textwindow() |
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485 | self.seltext = self._get_selected_text(event) |
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486 | if len(self.seltext) == 3: |
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487 | tkcanvas = event.canvas._tkcanvas |
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488 | xpos = tkcanvas.winfo_rootx() + int(event.x) |
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489 | ypos = tkcanvas.winfo_rooty() \ |
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490 | + tkcanvas.winfo_height() - int(event.y) |
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491 | self.menu.post(xpos,ypos) |
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492 | |
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493 | def close_modmenu(self): |
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494 | """Close cascade menu.""" |
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495 | self.seltext = {} |
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496 | self.menu.unpost() |
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497 | |
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498 | ### load text window for modification |
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499 | def _modify_note(self): |
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500 | """helper function to load text window to modify selected note""" |
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501 | #print "Modify selected!!" |
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502 | textobj = self.seltext['textobj'] |
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503 | (xtx, ytx) = textobj._get_xy_display() |
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504 | is_ax = (self.seltext['anchor'] != 'figure') |
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505 | if not is_ax: |
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506 | # previous anchor is figure |
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507 | pos = textobj.get_position() |
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508 | is_ax = (self._get_axes_from_pos(pos,self.canvas) != None) |
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509 | |
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510 | (xpix, ypix) = self._disppix2screen(xtx,ytx) |
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511 | offset = int(textobj.get_size())*2 |
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512 | self.show_textwindow(xpix,ypix+offset,basetext=textobj.get_text(),\ |
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513 | enableaxes=is_ax) |
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514 | self._select_radio(self.seltext['anchor']) |
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515 | self._set_note(textobj.get_text()) |
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516 | |
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517 | ### close all widgets |
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518 | def close_widgets(self): |
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519 | """Close note window and menu""" |
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520 | self.close_textwindow() |
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521 | self.close_modmenu() |
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522 | |
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523 | ### dialog to confirm deleting note |
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524 | def _delnote_dialog(self): |
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525 | """Load dialog to confirm deletion of the text""" |
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526 | remind = "Delete text?\n '"+self.seltext['textobj'].get_text()+"'" |
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527 | answer = tkMessageBox.askokcancel(parent=self.parent,title="Delete?", |
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528 | message=remind, |
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529 | default=tkMessageBox.CANCEL) |
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530 | if answer: |
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531 | self.delete_note() |
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532 | else: |
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533 | self.cancel_delete() |
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534 | |
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535 | ### helper functions |
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536 | def _disppix2screen(self,xpixd,ypixd): |
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537 | """ |
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538 | helper function to calculate a pixel position form Upper-left |
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539 | corner of the SCREEN from a pixel position (xpixd, ypixd) |
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540 | from Lower-left of the CANVAS (which, e.g., event.x/y returns) |
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541 | |
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542 | Returns: |
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543 | (x, y): pixel position from Upper-left corner of the SCREEN. |
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544 | """ |
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545 | xpixs = self.parent.winfo_rootx() + xpixd |
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546 | ypixs = self.parent.winfo_rooty() + self.parent.winfo_height() \ |
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547 | - ypixd |
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548 | return (int(xpixs), int(ypixs)) |
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549 | |
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