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@@ -1,252 +1,252 b'' | |||
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1 | 1 | # Standard libary imports. |
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2 | 2 | from base64 import decodestring |
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3 | 3 | import os |
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4 | 4 | import re |
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5 | 5 | |
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6 | 6 | # System libary imports. |
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7 | 7 | from IPython.external.qt import QtCore, QtGui |
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8 | 8 | |
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9 | 9 | # Local imports |
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10 | 10 | from IPython.frontend.qt.svg import save_svg, svg_to_clipboard, svg_to_image |
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11 | 11 | from ipython_widget import IPythonWidget |
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12 | 12 | |
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13 | 13 | |
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14 | 14 | class RichIPythonWidget(IPythonWidget): |
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15 | 15 | """ An IPythonWidget that supports rich text, including lists, images, and |
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16 | 16 | tables. Note that raw performance will be reduced compared to the plain |
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17 | 17 | text version. |
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18 | 18 | """ |
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19 | 19 | |
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20 | 20 | # RichIPythonWidget protected class variables. |
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21 | 21 | _payload_source_plot = 'IPython.zmq.pylab.backend_payload.add_plot_payload' |
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22 | 22 | |
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23 | 23 | #--------------------------------------------------------------------------- |
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24 | 24 | # 'object' interface |
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25 | 25 | #--------------------------------------------------------------------------- |
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26 | 26 | |
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27 | 27 | def __init__(self, *args, **kw): |
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28 | 28 | """ Create a RichIPythonWidget. |
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29 | 29 | """ |
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30 | 30 | kw['kind'] = 'rich' |
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31 | 31 | super(RichIPythonWidget, self).__init__(*args, **kw) |
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32 | 32 | |
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33 | 33 | # Configure the ConsoleWidget HTML exporter for our formats. |
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34 | 34 | self._html_exporter.image_tag = self._get_image_tag |
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35 | 35 | |
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36 | 36 | # Dictionary for resolving document resource names to SVG data. |
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37 | 37 | self._name_to_svg_map = {} |
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38 | 38 | |
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39 | 39 | #--------------------------------------------------------------------------- |
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40 | 40 | # 'ConsoleWidget' protected interface |
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41 | 41 | #--------------------------------------------------------------------------- |
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42 | 42 | |
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43 | 43 | def _context_menu_make(self, pos): |
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44 | 44 | """ Reimplemented to return a custom context menu for images. |
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45 | 45 | """ |
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46 | 46 | format = self._control.cursorForPosition(pos).charFormat() |
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47 | 47 | name = format.stringProperty(QtGui.QTextFormat.ImageName) |
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48 | 48 | if name: |
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49 | 49 | menu = QtGui.QMenu() |
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50 | 50 | |
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51 | 51 | menu.addAction('Copy Image', lambda: self._copy_image(name)) |
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52 | 52 | menu.addAction('Save Image As...', lambda: self._save_image(name)) |
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53 | 53 | menu.addSeparator() |
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54 | 54 | |
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55 | 55 | svg = self._name_to_svg_map.get(name, None) |
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56 | 56 | if svg is not None: |
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57 | 57 | menu.addSeparator() |
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58 | 58 | menu.addAction('Copy SVG', lambda: svg_to_clipboard(svg)) |
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59 | 59 | menu.addAction('Save SVG As...', |
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60 | 60 | lambda: save_svg(svg, self._control)) |
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61 | 61 | else: |
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62 | 62 | menu = super(RichIPythonWidget, self)._context_menu_make(pos) |
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63 | 63 | return menu |
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64 | 64 | |
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65 | 65 | #--------------------------------------------------------------------------- |
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66 | 66 | # 'BaseFrontendMixin' abstract interface |
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67 | 67 | #--------------------------------------------------------------------------- |
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68 | 68 | |
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69 | 69 | def _handle_pyout(self, msg): |
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70 | 70 | """ Overridden to handle rich data types, like SVG. |
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71 | 71 | """ |
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72 | 72 | if not self._hidden and self._is_from_this_session(msg): |
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73 | 73 | content = msg['content'] |
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74 | 74 | prompt_number = content['execution_count'] |
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75 | 75 | data = content['data'] |
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76 | 76 | if data.has_key('image/svg+xml'): |
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77 | 77 | self._append_plain_text(self.output_sep, True) |
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78 | 78 | self._append_html(self._make_out_prompt(prompt_number), True) |
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79 | 79 | self._append_svg(data['image/svg+xml'], True) |
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80 | 80 | self._append_html(self.output_sep2, True) |
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81 | 81 | elif data.has_key('image/png'): |
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82 | 82 | self._append_plain_text(self.output_sep, True) |
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83 | 83 | self._append_html(self._make_out_prompt(prompt_number), True) |
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84 | 84 | # This helps the output to look nice. |
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85 | 85 | self._append_plain_text('\n', True) |
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86 | self._append_png(decodestring(data['image/png']), True) | |
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86 | self._append_png(decodestring(data['image/png'].encode('ascii')), True) | |
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87 | 87 | self._append_html(self.output_sep2, True) |
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88 | 88 | else: |
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89 | 89 | # Default back to the plain text representation. |
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90 | 90 | return super(RichIPythonWidget, self)._handle_pyout(msg) |
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91 | 91 | |
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92 | 92 | def _handle_display_data(self, msg): |
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93 | 93 | """ Overridden to handle rich data types, like SVG. |
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94 | 94 | """ |
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95 | 95 | if not self._hidden and self._is_from_this_session(msg): |
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96 | 96 | source = msg['content']['source'] |
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97 | 97 | data = msg['content']['data'] |
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98 | 98 | metadata = msg['content']['metadata'] |
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99 | 99 | # Try to use the svg or html representations. |
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100 | 100 | # FIXME: Is this the right ordering of things to try? |
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101 | 101 | if data.has_key('image/svg+xml'): |
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102 | 102 | svg = data['image/svg+xml'] |
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103 | 103 | self._append_svg(svg, True) |
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104 | 104 | elif data.has_key('image/png'): |
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105 | 105 | # PNG data is base64 encoded as it passes over the network |
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106 | 106 | # in a JSON structure so we decode it. |
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107 | png = decodestring(data['image/png']) | |
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107 | png = decodestring(data['image/png'].encode('ascii')) | |
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108 | 108 | self._append_png(png, True) |
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109 | 109 | else: |
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110 | 110 | # Default back to the plain text representation. |
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111 | 111 | return super(RichIPythonWidget, self)._handle_display_data(msg) |
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112 | 112 | |
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113 | 113 | #--------------------------------------------------------------------------- |
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114 | 114 | # 'RichIPythonWidget' protected interface |
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115 | 115 | #--------------------------------------------------------------------------- |
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116 | 116 | |
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117 | 117 | def _append_png(self, png, before_prompt=False): |
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118 | 118 | """ Append raw PNG data to the widget. |
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119 | 119 | """ |
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120 | 120 | self._append_custom(self._insert_png, png, before_prompt) |
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121 | 121 | |
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122 | 122 | def _append_svg(self, svg, before_prompt=False): |
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123 | 123 | """ Append raw SVG data to the widget. |
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124 | 124 | """ |
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125 | 125 | self._append_custom(self._insert_svg, svg, before_prompt) |
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126 | 126 | |
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127 | 127 | def _add_image(self, image): |
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128 | 128 | """ Adds the specified QImage to the document and returns a |
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129 | 129 | QTextImageFormat that references it. |
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130 | 130 | """ |
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131 | 131 | document = self._control.document() |
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132 | 132 | name = str(image.cacheKey()) |
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133 | 133 | document.addResource(QtGui.QTextDocument.ImageResource, |
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134 | 134 | QtCore.QUrl(name), image) |
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135 | 135 | format = QtGui.QTextImageFormat() |
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136 | 136 | format.setName(name) |
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137 | 137 | return format |
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138 | 138 | |
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139 | 139 | def _copy_image(self, name): |
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140 | 140 | """ Copies the ImageResource with 'name' to the clipboard. |
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141 | 141 | """ |
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142 | 142 | image = self._get_image(name) |
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143 | 143 | QtGui.QApplication.clipboard().setImage(image) |
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144 | 144 | |
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145 | 145 | def _get_image(self, name): |
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146 | 146 | """ Returns the QImage stored as the ImageResource with 'name'. |
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147 | 147 | """ |
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148 | 148 | document = self._control.document() |
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149 | 149 | image = document.resource(QtGui.QTextDocument.ImageResource, |
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150 | 150 | QtCore.QUrl(name)) |
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151 | 151 | return image |
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152 | 152 | |
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153 | 153 | def _get_image_tag(self, match, path = None, format = "png"): |
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154 | 154 | """ Return (X)HTML mark-up for the image-tag given by match. |
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155 | 155 | |
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156 | 156 | Parameters |
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157 | 157 | ---------- |
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158 | 158 | match : re.SRE_Match |
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159 | 159 | A match to an HTML image tag as exported by Qt, with |
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160 | 160 | match.group("Name") containing the matched image ID. |
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161 | 161 | |
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162 | 162 | path : string|None, optional [default None] |
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163 | 163 | If not None, specifies a path to which supporting files may be |
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164 | 164 | written (e.g., for linked images). If None, all images are to be |
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165 | 165 | included inline. |
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166 | 166 | |
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167 | 167 | format : "png"|"svg", optional [default "png"] |
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168 | 168 | Format for returned or referenced images. |
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169 | 169 | """ |
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170 | 170 | if format == "png": |
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171 | 171 | try: |
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172 | 172 | image = self._get_image(match.group("name")) |
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173 | 173 | except KeyError: |
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174 | 174 | return "<b>Couldn't find image %s</b>" % match.group("name") |
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175 | 175 | |
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176 | 176 | if path is not None: |
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177 | 177 | if not os.path.exists(path): |
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178 | 178 | os.mkdir(path) |
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179 | 179 | relpath = os.path.basename(path) |
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180 | 180 | if image.save("%s/qt_img%s.png" % (path,match.group("name")), |
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181 | 181 | "PNG"): |
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182 | 182 | return '<img src="%s/qt_img%s.png">' % (relpath, |
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183 | 183 | match.group("name")) |
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184 | 184 | else: |
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185 | 185 | return "<b>Couldn't save image!</b>" |
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186 | 186 | else: |
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187 | 187 | ba = QtCore.QByteArray() |
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188 | 188 | buffer_ = QtCore.QBuffer(ba) |
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189 | 189 | buffer_.open(QtCore.QIODevice.WriteOnly) |
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190 | 190 | image.save(buffer_, "PNG") |
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191 | 191 | buffer_.close() |
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192 | 192 | return '<img src="data:image/png;base64,\n%s\n" />' % ( |
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193 | 193 | re.sub(r'(.{60})',r'\1\n',str(ba.toBase64()))) |
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194 | 194 | |
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195 | 195 | elif format == "svg": |
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196 | 196 | try: |
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197 | 197 | svg = str(self._name_to_svg_map[match.group("name")]) |
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198 | 198 | except KeyError: |
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199 | 199 | return "<b>Couldn't find image %s</b>" % match.group("name") |
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200 | 200 | |
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201 | 201 | # Not currently checking path, because it's tricky to find a |
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202 | 202 | # cross-browser way to embed external SVG images (e.g., via |
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203 | 203 | # object or embed tags). |
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204 | 204 | |
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205 | 205 | # Chop stand-alone header from matplotlib SVG |
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206 | 206 | offset = svg.find("<svg") |
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207 | 207 | assert(offset > -1) |
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208 | 208 | |
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209 | 209 | return svg[offset:] |
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210 | 210 | |
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211 | 211 | else: |
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212 | 212 | return '<b>Unrecognized image format</b>' |
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213 | 213 | |
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214 | 214 | def _insert_png(self, cursor, png): |
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215 | 215 | """ Insert raw PNG data into the widget. |
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216 | 216 | """ |
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217 | 217 | try: |
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218 | 218 | image = QtGui.QImage() |
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219 | 219 | image.loadFromData(png, 'PNG') |
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220 | 220 | except ValueError: |
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221 | 221 | self._insert_plain_text(cursor, 'Received invalid PNG data.') |
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222 | 222 | else: |
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223 | 223 | format = self._add_image(image) |
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224 | 224 | cursor.insertBlock() |
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225 | 225 | cursor.insertImage(format) |
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226 | 226 | cursor.insertBlock() |
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227 | 227 | |
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228 | 228 | def _insert_svg(self, cursor, svg): |
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229 | 229 | """ Insert raw SVG data into the widet. |
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230 | 230 | """ |
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231 | 231 | try: |
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232 | 232 | image = svg_to_image(svg) |
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233 | 233 | except ValueError: |
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234 | 234 | self._insert_plain_text(cursor, 'Received invalid SVG data.') |
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235 | 235 | else: |
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236 | 236 | format = self._add_image(image) |
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237 | 237 | self._name_to_svg_map[format.name()] = svg |
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238 | 238 | cursor.insertBlock() |
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239 | 239 | cursor.insertImage(format) |
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240 | 240 | cursor.insertBlock() |
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241 | 241 | |
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242 | 242 | def _save_image(self, name, format='PNG'): |
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243 | 243 | """ Shows a save dialog for the ImageResource with 'name'. |
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244 | 244 | """ |
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245 | 245 | dialog = QtGui.QFileDialog(self._control, 'Save Image') |
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246 | 246 | dialog.setAcceptMode(QtGui.QFileDialog.AcceptSave) |
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247 | 247 | dialog.setDefaultSuffix(format.lower()) |
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248 | 248 | dialog.setNameFilter('%s file (*.%s)' % (format, format.lower())) |
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249 | 249 | if dialog.exec_(): |
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250 | 250 | filename = dialog.selectedFiles()[0] |
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251 | 251 | image = self._get_image(name) |
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252 | 252 | image.save(filename, format) |
@@ -1,322 +1,322 b'' | |||
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """Pylab (matplotlib) support utilities. |
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3 | 3 | |
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4 | 4 | Authors |
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5 | 5 | ------- |
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6 | 6 | |
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7 | 7 | * Fernando Perez. |
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8 | 8 | * Brian Granger |
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9 | 9 | """ |
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10 | 10 | |
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11 | 11 | #----------------------------------------------------------------------------- |
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12 | 12 | # Copyright (C) 2009 The IPython Development Team |
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13 | 13 | # |
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14 | 14 | # Distributed under the terms of the BSD License. The full license is in |
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15 | 15 | # the file COPYING, distributed as part of this software. |
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16 | 16 | #----------------------------------------------------------------------------- |
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17 | 17 | |
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18 | 18 | #----------------------------------------------------------------------------- |
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19 | 19 | # Imports |
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20 | 20 | #----------------------------------------------------------------------------- |
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21 | 21 | |
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22 |
from |
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22 | from io import BytesIO | |
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23 | 23 | |
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24 | 24 | from IPython.utils.decorators import flag_calls |
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25 | 25 | |
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26 | 26 | # If user specifies a GUI, that dictates the backend, otherwise we read the |
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27 | 27 | # user's mpl default from the mpl rc structure |
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28 | 28 | backends = {'tk': 'TkAgg', |
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29 | 29 | 'gtk': 'GTKAgg', |
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30 | 30 | 'wx': 'WXAgg', |
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31 | 31 | 'qt': 'Qt4Agg', # qt3 not supported |
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32 | 32 | 'qt4': 'Qt4Agg', |
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33 | 33 | 'osx': 'MacOSX', |
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34 | 34 | 'inline' : 'module://IPython.zmq.pylab.backend_inline'} |
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35 | 35 | |
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36 | 36 | # We also need a reverse backends2guis mapping that will properly choose which |
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37 | 37 | # GUI support to activate based on the desired matplotlib backend. For the |
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38 | 38 | # most part it's just a reverse of the above dict, but we also need to add a |
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39 | 39 | # few others that map to the same GUI manually: |
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40 | 40 | backend2gui = dict(zip(backends.values(), backends.keys())) |
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41 | 41 | # In the reverse mapping, there are a few extra valid matplotlib backends that |
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42 | 42 | # map to the same GUI support |
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43 | 43 | backend2gui['GTK'] = backend2gui['GTKCairo'] = 'gtk' |
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44 | 44 | backend2gui['WX'] = 'wx' |
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45 | 45 | backend2gui['CocoaAgg'] = 'osx' |
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46 | 46 | |
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47 | 47 | #----------------------------------------------------------------------------- |
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48 | 48 | # Matplotlib utilities |
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49 | 49 | #----------------------------------------------------------------------------- |
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50 | 50 | |
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51 | 51 | |
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52 | 52 | def getfigs(*fig_nums): |
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53 | 53 | """Get a list of matplotlib figures by figure numbers. |
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54 | 54 | |
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55 | 55 | If no arguments are given, all available figures are returned. If the |
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56 | 56 | argument list contains references to invalid figures, a warning is printed |
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57 | 57 | but the function continues pasting further figures. |
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58 | 58 | |
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59 | 59 | Parameters |
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60 | 60 | ---------- |
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61 | 61 | figs : tuple |
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62 | 62 | A tuple of ints giving the figure numbers of the figures to return. |
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63 | 63 | """ |
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64 | 64 | from matplotlib._pylab_helpers import Gcf |
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65 | 65 | if not fig_nums: |
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66 | 66 | fig_managers = Gcf.get_all_fig_managers() |
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67 | 67 | return [fm.canvas.figure for fm in fig_managers] |
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68 | 68 | else: |
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69 | 69 | figs = [] |
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70 | 70 | for num in fig_nums: |
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71 | 71 | f = Gcf.figs.get(num) |
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72 | 72 | if f is None: |
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73 | 73 | print('Warning: figure %s not available.' % num) |
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74 | 74 | else: |
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75 | 75 | figs.append(f.canvas.figure) |
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76 | 76 | return figs |
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77 | 77 | |
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78 | 78 | |
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79 | 79 | def figsize(sizex, sizey): |
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80 | 80 | """Set the default figure size to be [sizex, sizey]. |
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81 | 81 | |
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82 | 82 | This is just an easy to remember, convenience wrapper that sets:: |
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83 | 83 | |
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84 | 84 | matplotlib.rcParams['figure.figsize'] = [sizex, sizey] |
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85 | 85 | """ |
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86 | 86 | import matplotlib |
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87 | 87 | matplotlib.rcParams['figure.figsize'] = [sizex, sizey] |
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88 | 88 | |
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89 | 89 | |
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90 | 90 | def print_figure(fig, fmt='png'): |
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91 | 91 | """Convert a figure to svg or png for inline display.""" |
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92 | 92 | # When there's an empty figure, we shouldn't return anything, otherwise we |
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93 | 93 | # get big blank areas in the qt console. |
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94 | 94 | if not fig.axes: |
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95 | 95 | return |
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96 | 96 | |
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97 | 97 | fc = fig.get_facecolor() |
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98 | 98 | ec = fig.get_edgecolor() |
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99 | 99 | fig.set_facecolor('white') |
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100 | 100 | fig.set_edgecolor('white') |
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101 | 101 | try: |
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102 |
s |
|
|
102 | bytes_io = BytesIO() | |
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103 | 103 | # use 72 dpi to match QTConsole's dpi |
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104 |
fig.canvas.print_figure(s |
|
|
104 | fig.canvas.print_figure(bytes_io, format=fmt, dpi=72, | |
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105 | 105 | bbox_inches='tight') |
|
106 |
data = s |
|
|
106 | data = bytes_io.getvalue() | |
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107 | 107 | finally: |
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108 | 108 | fig.set_facecolor(fc) |
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109 | 109 | fig.set_edgecolor(ec) |
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110 | 110 | return data |
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111 | 111 | |
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112 | 112 | |
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113 | 113 | # We need a little factory function here to create the closure where |
|
114 | 114 | # safe_execfile can live. |
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115 | 115 | def mpl_runner(safe_execfile): |
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116 | 116 | """Factory to return a matplotlib-enabled runner for %run. |
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117 | 117 | |
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118 | 118 | Parameters |
|
119 | 119 | ---------- |
|
120 | 120 | safe_execfile : function |
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121 | 121 | This must be a function with the same interface as the |
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122 | 122 | :meth:`safe_execfile` method of IPython. |
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123 | 123 | |
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124 | 124 | Returns |
|
125 | 125 | ------- |
|
126 | 126 | A function suitable for use as the ``runner`` argument of the %run magic |
|
127 | 127 | function. |
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128 | 128 | """ |
|
129 | 129 | |
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130 | 130 | def mpl_execfile(fname,*where,**kw): |
|
131 | 131 | """matplotlib-aware wrapper around safe_execfile. |
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132 | 132 | |
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133 | 133 | Its interface is identical to that of the :func:`execfile` builtin. |
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134 | 134 | |
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135 | 135 | This is ultimately a call to execfile(), but wrapped in safeties to |
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136 | 136 | properly handle interactive rendering.""" |
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137 | 137 | |
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138 | 138 | import matplotlib |
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139 | 139 | import matplotlib.pylab as pylab |
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140 | 140 | |
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141 | 141 | #print '*** Matplotlib runner ***' # dbg |
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142 | 142 | # turn off rendering until end of script |
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143 | 143 | is_interactive = matplotlib.rcParams['interactive'] |
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144 | 144 | matplotlib.interactive(False) |
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145 | 145 | safe_execfile(fname,*where,**kw) |
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146 | 146 | matplotlib.interactive(is_interactive) |
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147 | 147 | # make rendering call now, if the user tried to do it |
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148 | 148 | if pylab.draw_if_interactive.called: |
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149 | 149 | pylab.draw() |
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150 | 150 | pylab.draw_if_interactive.called = False |
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151 | 151 | |
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152 | 152 | return mpl_execfile |
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153 | 153 | |
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154 | 154 | |
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155 | 155 | def select_figure_format(shell, fmt): |
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156 | 156 | """Select figure format for inline backend, either 'png' or 'svg'. |
|
157 | 157 | |
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158 | 158 | Using this method ensures only one figure format is active at a time. |
|
159 | 159 | """ |
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160 | 160 | from matplotlib.figure import Figure |
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161 | 161 | from IPython.zmq.pylab import backend_inline |
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162 | 162 | |
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163 | 163 | svg_formatter = shell.display_formatter.formatters['image/svg+xml'] |
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164 | 164 | png_formatter = shell.display_formatter.formatters['image/png'] |
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165 | 165 | |
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166 | 166 | if fmt=='png': |
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167 | 167 | svg_formatter.type_printers.pop(Figure, None) |
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168 | 168 | png_formatter.for_type(Figure, lambda fig: print_figure(fig, 'png')) |
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169 | 169 | elif fmt=='svg': |
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170 | 170 | png_formatter.type_printers.pop(Figure, None) |
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171 | 171 | svg_formatter.for_type(Figure, lambda fig: print_figure(fig, 'svg')) |
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172 | 172 | else: |
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173 | 173 | raise ValueError("supported formats are: 'png', 'svg', not %r"%fmt) |
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174 | 174 | |
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175 | 175 | # set the format to be used in the backend() |
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176 | 176 | backend_inline._figure_format = fmt |
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177 | 177 | |
|
178 | 178 | #----------------------------------------------------------------------------- |
|
179 | 179 | # Code for initializing matplotlib and importing pylab |
|
180 | 180 | #----------------------------------------------------------------------------- |
|
181 | 181 | |
|
182 | 182 | |
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183 | 183 | def find_gui_and_backend(gui=None): |
|
184 | 184 | """Given a gui string return the gui and mpl backend. |
|
185 | 185 | |
|
186 | 186 | Parameters |
|
187 | 187 | ---------- |
|
188 | 188 | gui : str |
|
189 | 189 | Can be one of ('tk','gtk','wx','qt','qt4','inline'). |
|
190 | 190 | |
|
191 | 191 | Returns |
|
192 | 192 | ------- |
|
193 | 193 | A tuple of (gui, backend) where backend is one of ('TkAgg','GTKAgg', |
|
194 | 194 | 'WXAgg','Qt4Agg','module://IPython.zmq.pylab.backend_inline'). |
|
195 | 195 | """ |
|
196 | 196 | |
|
197 | 197 | import matplotlib |
|
198 | 198 | |
|
199 | 199 | if gui: |
|
200 | 200 | # select backend based on requested gui |
|
201 | 201 | backend = backends[gui] |
|
202 | 202 | else: |
|
203 | 203 | backend = matplotlib.rcParams['backend'] |
|
204 | 204 | # In this case, we need to find what the appropriate gui selection call |
|
205 | 205 | # should be for IPython, so we can activate inputhook accordingly |
|
206 | 206 | gui = backend2gui.get(backend, None) |
|
207 | 207 | return gui, backend |
|
208 | 208 | |
|
209 | 209 | |
|
210 | 210 | def activate_matplotlib(backend): |
|
211 | 211 | """Activate the given backend and set interactive to True.""" |
|
212 | 212 | |
|
213 | 213 | import matplotlib |
|
214 | 214 | if backend.startswith('module://'): |
|
215 | 215 | # Work around bug in matplotlib: matplotlib.use converts the |
|
216 | 216 | # backend_id to lowercase even if a module name is specified! |
|
217 | 217 | matplotlib.rcParams['backend'] = backend |
|
218 | 218 | else: |
|
219 | 219 | matplotlib.use(backend) |
|
220 | 220 | matplotlib.interactive(True) |
|
221 | 221 | |
|
222 | 222 | # This must be imported last in the matplotlib series, after |
|
223 | 223 | # backend/interactivity choices have been made |
|
224 | 224 | import matplotlib.pylab as pylab |
|
225 | 225 | |
|
226 | 226 | # XXX For now leave this commented out, but depending on discussions with |
|
227 | 227 | # mpl-dev, we may be able to allow interactive switching... |
|
228 | 228 | #import matplotlib.pyplot |
|
229 | 229 | #matplotlib.pyplot.switch_backend(backend) |
|
230 | 230 | |
|
231 | 231 | pylab.show._needmain = False |
|
232 | 232 | # We need to detect at runtime whether show() is called by the user. |
|
233 | 233 | # For this, we wrap it into a decorator which adds a 'called' flag. |
|
234 | 234 | pylab.draw_if_interactive = flag_calls(pylab.draw_if_interactive) |
|
235 | 235 | |
|
236 | 236 | def import_pylab(user_ns, backend, import_all=True, shell=None): |
|
237 | 237 | """Import the standard pylab symbols into user_ns.""" |
|
238 | 238 | |
|
239 | 239 | # Import numpy as np/pyplot as plt are conventions we're trying to |
|
240 | 240 | # somewhat standardize on. Making them available to users by default |
|
241 | 241 | # will greatly help this. |
|
242 | 242 | s = ("import numpy\n" |
|
243 | 243 | "import matplotlib\n" |
|
244 | 244 | "from matplotlib import pylab, mlab, pyplot\n" |
|
245 | 245 | "np = numpy\n" |
|
246 | 246 | "plt = pyplot\n" |
|
247 | 247 | ) |
|
248 | 248 | exec s in user_ns |
|
249 | 249 | |
|
250 | 250 | if shell is not None: |
|
251 | 251 | exec s in shell.user_ns_hidden |
|
252 | 252 | # If using our svg payload backend, register the post-execution |
|
253 | 253 | # function that will pick up the results for display. This can only be |
|
254 | 254 | # done with access to the real shell object. |
|
255 | 255 | # |
|
256 | 256 | from IPython.zmq.pylab.backend_inline import InlineBackendConfig |
|
257 | 257 | |
|
258 | 258 | cfg = InlineBackendConfig.instance(config=shell.config) |
|
259 | 259 | cfg.shell = shell |
|
260 | 260 | |
|
261 | 261 | if backend == backends['inline']: |
|
262 | 262 | from IPython.zmq.pylab.backend_inline import flush_figures |
|
263 | 263 | from matplotlib import pyplot |
|
264 | 264 | shell.register_post_execute(flush_figures) |
|
265 | 265 | # load inline_rc |
|
266 | 266 | pyplot.rcParams.update(cfg.rc) |
|
267 | 267 | |
|
268 | 268 | # Add 'figsize' to pyplot and to the user's namespace |
|
269 | 269 | user_ns['figsize'] = pyplot.figsize = figsize |
|
270 | 270 | shell.user_ns_hidden['figsize'] = figsize |
|
271 | 271 | |
|
272 | 272 | # Setup the default figure format |
|
273 | 273 | fmt = cfg.figure_format |
|
274 | 274 | select_figure_format(shell, fmt) |
|
275 | 275 | |
|
276 | 276 | # The old pastefig function has been replaced by display |
|
277 | 277 | from IPython.core.display import display |
|
278 | 278 | # Add display and display_png to the user's namespace |
|
279 | 279 | user_ns['display'] = display |
|
280 | 280 | shell.user_ns_hidden['display'] = display |
|
281 | 281 | user_ns['getfigs'] = getfigs |
|
282 | 282 | shell.user_ns_hidden['getfigs'] = getfigs |
|
283 | 283 | |
|
284 | 284 | if import_all: |
|
285 | 285 | s = ("from matplotlib.pylab import *\n" |
|
286 | 286 | "from numpy import *\n") |
|
287 | 287 | exec s in user_ns |
|
288 | 288 | if shell is not None: |
|
289 | 289 | exec s in shell.user_ns_hidden |
|
290 | 290 | |
|
291 | 291 | |
|
292 | 292 | def pylab_activate(user_ns, gui=None, import_all=True): |
|
293 | 293 | """Activate pylab mode in the user's namespace. |
|
294 | 294 | |
|
295 | 295 | Loads and initializes numpy, matplotlib and friends for interactive use. |
|
296 | 296 | |
|
297 | 297 | Parameters |
|
298 | 298 | ---------- |
|
299 | 299 | user_ns : dict |
|
300 | 300 | Namespace where the imports will occur. |
|
301 | 301 | |
|
302 | 302 | gui : optional, string |
|
303 | 303 | A valid gui name following the conventions of the %gui magic. |
|
304 | 304 | |
|
305 | 305 | import_all : optional, boolean |
|
306 | 306 | If true, an 'import *' is done from numpy and pylab. |
|
307 | 307 | |
|
308 | 308 | Returns |
|
309 | 309 | ------- |
|
310 | 310 | The actual gui used (if not given as input, it was obtained from matplotlib |
|
311 | 311 | itself, and will be needed next to configure IPython's gui integration. |
|
312 | 312 | """ |
|
313 | 313 | gui, backend = find_gui_and_backend(gui) |
|
314 | 314 | activate_matplotlib(backend) |
|
315 | 315 | import_pylab(user_ns, backend, import_all) |
|
316 | 316 | |
|
317 | 317 | print """ |
|
318 | 318 | Welcome to pylab, a matplotlib-based Python environment [backend: %s]. |
|
319 | 319 | For more information, type 'help(pylab)'.""" % backend |
|
320 | 320 | |
|
321 | 321 | return gui |
|
322 | 322 |
@@ -1,68 +1,68 b'' | |||
|
1 | 1 | import __builtin__ |
|
2 | 2 | from base64 import encodestring |
|
3 | 3 | |
|
4 | 4 | from IPython.core.displayhook import DisplayHook |
|
5 | 5 | from IPython.utils.traitlets import Instance, Dict |
|
6 | 6 | from session import extract_header, Session |
|
7 | 7 | |
|
8 | 8 | class ZMQDisplayHook(object): |
|
9 | 9 | """A simple displayhook that publishes the object's repr over a ZeroMQ |
|
10 | 10 | socket.""" |
|
11 | 11 | topic=None |
|
12 | 12 | |
|
13 | 13 | def __init__(self, session, pub_socket): |
|
14 | 14 | self.session = session |
|
15 | 15 | self.pub_socket = pub_socket |
|
16 | 16 | self.parent_header = {} |
|
17 | 17 | |
|
18 | 18 | def __call__(self, obj): |
|
19 | 19 | if obj is None: |
|
20 | 20 | return |
|
21 | 21 | |
|
22 | 22 | __builtin__._ = obj |
|
23 | 23 | msg = self.session.send(self.pub_socket, u'pyout', {u'data':repr(obj)}, |
|
24 | 24 | parent=self.parent_header, ident=self.topic) |
|
25 | 25 | |
|
26 | 26 | def set_parent(self, parent): |
|
27 | 27 | self.parent_header = extract_header(parent) |
|
28 | 28 | |
|
29 | 29 | |
|
30 | 30 | def _encode_binary(format_dict): |
|
31 | 31 | pngdata = format_dict.get('image/png') |
|
32 | 32 | if pngdata is not None: |
|
33 | format_dict['image/png'] = encodestring(pngdata) | |
|
33 | format_dict['image/png'] = encodestring(pngdata).decode('ascii') | |
|
34 | 34 | jpegdata = format_dict.get('image/jpeg') |
|
35 | 35 | if jpegdata is not None: |
|
36 | format_dict['image/jpeg'] = encodestring(jpegdata) | |
|
36 | format_dict['image/jpeg'] = encodestring(jpegdata).decode('ascii') | |
|
37 | 37 | |
|
38 | 38 | |
|
39 | 39 | class ZMQShellDisplayHook(DisplayHook): |
|
40 | 40 | """A displayhook subclass that publishes data using ZeroMQ. This is intended |
|
41 | 41 | to work with an InteractiveShell instance. It sends a dict of different |
|
42 | 42 | representations of the object.""" |
|
43 | 43 | |
|
44 | 44 | session = Instance(Session) |
|
45 | 45 | pub_socket = Instance('zmq.Socket') |
|
46 | 46 | parent_header = Dict({}) |
|
47 | 47 | |
|
48 | 48 | def set_parent(self, parent): |
|
49 | 49 | """Set the parent for outbound messages.""" |
|
50 | 50 | self.parent_header = extract_header(parent) |
|
51 | 51 | |
|
52 | 52 | def start_displayhook(self): |
|
53 | 53 | self.msg = self.session.msg(u'pyout', {}, parent=self.parent_header) |
|
54 | 54 | |
|
55 | 55 | def write_output_prompt(self): |
|
56 | 56 | """Write the output prompt.""" |
|
57 | 57 | if self.do_full_cache: |
|
58 | 58 | self.msg['content']['execution_count'] = self.prompt_count |
|
59 | 59 | |
|
60 | 60 | def write_format_data(self, format_dict): |
|
61 | 61 | _encode_binary(format_dict) |
|
62 | 62 | self.msg['content']['data'] = format_dict |
|
63 | 63 | |
|
64 | 64 | def finish_displayhook(self): |
|
65 | 65 | """Finish up all displayhook activities.""" |
|
66 | 66 | self.session.send(self.pub_socket, self.msg) |
|
67 | 67 | self.msg = None |
|
68 | 68 |
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