Mercurial Repositories > Base64 Data URI Encoder Wizard / file comparison
comparison: WizardDataUriEncoder/DataUriEncoderWizardDialog.py
WizardDataUriEncoder/DataUriEncoderWizardDialog.py
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- 2fa6997ff09c
- child 2
- f33d9d82ae69
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 """ | |
| 4 Module implementing DataUriEncoderWizardDialog. | |
| 5 """ | |
| 6 | |
| 7 import os | |
| 8 import mimetypes | |
| 9 import base64 | |
| 10 import getpass | |
| 11 import datetime | |
| 12 | |
| 13 from PyQt4.QtCore import pyqtSlot | |
| 14 from PyQt4.QtGui import QDialog, QDialogButtonBox, QApplication, QInputDialog | |
| 15 | |
| 16 from E5Gui.E5Completers import E5FileCompleter | |
| 17 from E5Gui import E5FileDialog, E5MessageBox | |
| 18 | |
| 19 from .Ui_DataUriEncoderWizardDialog import Ui_DataUriEncoderWizardDialog | |
| 20 | |
| 21 import Preferences | |
| 22 import Utilities | |
| 23 import UI.PixmapCache | |
| 24 | |
| 25 | |
| 26 Python2Template = """#!/usr/bin/env python | |
| 27 # -*- coding: utf-8 -*- | |
| 28 | |
| 29 from base64 import b64decode | |
| 30 from cStringIO import StringIO | |
| 31 | |
| 32 #metadata | |
| 33 __author__ = '{0}' | |
| 34 __date__ = '{1}' | |
| 35 | |
| 36 | |
| 37 embedded_file = StringIO(b64decode({2})) | |
| 38 print(embedded_file.read()) | |
| 39 """ | |
| 40 | |
| 41 | |
| 42 Python3Template = """#!/usr/bin/env python3 | |
| 43 # -*- coding: utf-8 -*- | |
| 44 | |
| 45 from base64 import b64decode | |
| 46 from io import BytesIO | |
| 47 | |
| 48 #metadata | |
| 49 __author__ = '{0}' | |
| 50 __date__ = '{1}' | |
| 51 | |
| 52 | |
| 53 embedded_file = BytesIO(b64decode({2})) | |
| 54 print(embedded_file.read()) | |
| 55 """ | |
| 56 | |
| 57 | |
| 58 class DataUriEncoderWizardDialog(QDialog, Ui_DataUriEncoderWizardDialog): | |
| 59 """ | |
| 60 Class documentation goes here. | |
| 61 """ | |
| 62 def __init__(self, parent=None): | |
| 63 """ | |
| 64 Constructor | |
| 65 | |
| 66 @param parent reference to the parent widget (QWidget) | |
| 67 """ | |
| 68 super().__init__(parent) | |
| 69 self.setupUi(self) | |
| 70 | |
| 71 self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(False) | |
| 72 | |
| 73 self.__fileCompleter = E5FileCompleter(self.fileEdit) | |
| 74 | |
| 75 self.fileButton.setIcon(UI.PixmapCache.getIcon("open.png")) | |
| 76 | |
| 77 self.embeddingComboBox.addItems([ | |
| 78 self.tr('Do not generate code'), | |
| 79 self.tr('Generate CSS embed code'), | |
| 80 self.tr('Generate Python3 embed code'), | |
| 81 self.tr('Generate Python2 embed code'), | |
| 82 self.tr('Generate HTML embed code'), | |
| 83 self.tr('Generate JS embed code'), | |
| 84 self.tr('Generate QML embed code'), | |
| 85 ]) | |
| 86 | |
| 87 def __getStartDir(self): | |
| 88 """ | |
| 89 Private method to get the start directory for selection dialogs. | |
| 90 | |
| 91 @return start directory (string) | |
| 92 """ | |
| 93 return (Preferences.getMultiProject("Workspace") or | |
| 94 Utilities.getHomeDir()) | |
| 95 | |
| 96 @pyqtSlot() | |
| 97 def on_fileButton_clicked(self): | |
| 98 """ | |
| 99 Private slot to select the file to be encoded via a selection dialog. | |
| 100 """ | |
| 101 start = Utilities.fromNativeSeparators(self.fileEdit.text()) or \ | |
| 102 self.__getStartDir() | |
| 103 inputFile = E5FileDialog.getOpenFileName( | |
| 104 self, | |
| 105 self.trUtf8("Data URI Encoder"), | |
| 106 start, | |
| 107 self.trUtf8( | |
| 108 "Audio Files (*.flac *.mp3 *.ogg *.wav *.weba *.wma);;" | |
| 109 "Image Files (*.gif *.ico *.jpg *.png *.svg *.tif *.webp" | |
| 110 " *.xpm);;" | |
| 111 "Video Files (*.3gp *.avi *.flv *.mp4 *.ogv *.webm *.wmv);;" | |
| 112 "All Files (*)" | |
| 113 ) | |
| 114 ) | |
| 115 if inputFile: | |
| 116 self.fileEdit.setText(Utilities.toNativeSeparators(inputFile)) | |
| 117 | |
| 118 @pyqtSlot(int) | |
| 119 def on_embeddingComboBox_currentIndexChanged(self, index): | |
| 120 """ | |
| 121 Private slot to handle the selection of an embedding method. | |
| 122 | |
| 123 @param index index of the selected entry (integer) | |
| 124 """ | |
| 125 if index in [1, 4]: | |
| 126 self.encryptCheckBox.setChecked(False) | |
| 127 self.dataCheckBox.setChecked(True) | |
| 128 elif index in [2, 3, 5, 6]: | |
| 129 self.encryptCheckBox.setChecked(False) | |
| 130 self.dataCheckBox.setChecked(False) | |
| 131 | |
| 132 @pyqtSlot() | |
| 133 def on_encodeButton_clicked(self): | |
| 134 """ | |
| 135 Private slot to encode the contents of the given file. | |
| 136 """ | |
| 137 filepath = Utilities.toNativeSeparators(self.fileEdit.text().strip()) | |
| 138 mime = mimetypes.guess_type(filepath, strict=False) | |
| 139 mimetype = mime if mime is not None else self.__askMime() | |
| 140 | |
| 141 if os.path.getsize(filepath) // 1024 // 1024 >= 1: | |
| 142 res = E5MessageBox.warning( | |
| 143 self, | |
| 144 self.trUtf8("Data URI Encoder"), | |
| 145 self.trUtf8( | |
| 146 """The file size is > 1 Megabyte. Encoding this will""" | |
| 147 """ take some time depending on your CPU processing""" | |
| 148 """ power!"""), | |
| 149 E5MessageBox.StandardButtons( | |
| 150 E5MessageBox.Cancel | | |
| 151 E5MessageBox.Ok), | |
| 152 E5MessageBox.Cancel) | |
| 153 if res == E5MessageBox.Cancel: | |
| 154 return | |
| 155 | |
| 156 try: | |
| 157 output = '"{0}{1}{2}{3}"'.format( | |
| 158 'data:' if self.dataCheckBox.isChecked() else '', | |
| 159 mimetype if self.dataCheckBox.isChecked() else '', | |
| 160 ';charset=utf-8;base64,' if self.dataCheckBox.isChecked() | |
| 161 else '', | |
| 162 base64.b64encode(open(filepath, "rb").read()).decode() | |
| 163 ) | |
| 164 except (IOError, OSError) as err: | |
| 165 E5MessageBox.critical( | |
| 166 self, | |
| 167 self.trUtf8("Data URI Encoder"), | |
| 168 self.trUtf8( | |
| 169 """<p>The file <b>{0}</b> could not be read.</p>""" | |
| 170 """<p>Reason: {1}</p>""").format(filepath, str(err))) | |
| 171 return | |
| 172 if self.embeddingComboBox.currentIndex() == 1: | |
| 173 output = ('html, body {{ margin:0; padding:0; background: url({0})' | |
| 174 ' no-repeat center center fixed; background-size:cover' | |
| 175 ' }}'.format(output)) | |
| 176 elif self.embeddingComboBox.currentIndex() == 2: | |
| 177 output = Python3Template.format( | |
| 178 getpass.getuser(), | |
| 179 datetime.datetime.now().isoformat().split('.')[0], output) | |
| 180 elif self.embeddingComboBox.currentIndex() == 3: | |
| 181 output = Python2Template.format( | |
| 182 getpass.getuser(), | |
| 183 datetime.datetime.now().isoformat().split('.')[0], output) | |
| 184 elif self.embeddingComboBox.currentIndex() == 4: | |
| 185 output = '<img src={0} alt="{1}" title="{1}"/>'.format( | |
| 186 output, os.path.basename(filepath)) | |
| 187 elif self.embeddingComboBox.currentIndex() == 5: | |
| 188 output = 'var embedded_file = window.atob({0}); '.format(output) | |
| 189 elif self.embeddingComboBox.currentIndex() == 6: | |
| 190 output = 'Image {{ source: {0} }} '.format(output) | |
| 191 | |
| 192 if self.encryptCheckBox.isChecked(): | |
| 193 output = output.encode('rot_13') | |
| 194 | |
| 195 self.outputTextEdit.setPlainText(output) | |
| 196 | |
| 197 @pyqtSlot() | |
| 198 def on_copyButton_clicked(self): | |
| 199 """ | |
| 200 Private slot to copy the output to the clipboard. | |
| 201 """ | |
| 202 QApplication.clipboard().setText(self.outputTextEdit.toPlainText()) | |
| 203 | |
| 204 @pyqtSlot() | |
| 205 def on_outputTextEdit_textChanged(self): | |
| 206 """ | |
| 207 Private slot to handle the existence of some output text. | |
| 208 """ | |
| 209 enable = bool(self.outputTextEdit.toPlainText()) | |
| 210 self.copyButton.setEnabled(enable) | |
| 211 self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(enable) | |
| 212 | |
| 213 @pyqtSlot(str) | |
| 214 def on_fileEdit_textChanged(self, txt): | |
| 215 """ | |
| 216 Private slot to handle the editing of the file name. | |
| 217 | |
| 218 @param txt current file name (string) | |
| 219 """ | |
| 220 self.encodeButton.setEnabled(bool(txt) and os.path.isfile(txt)) | |
| 221 | |
| 222 def __askMime(self): | |
| 223 """ | |
| 224 Private method to get the mime type from the user. | |
| 225 | |
| 226 @return entered mime type (string) | |
| 227 """ | |
| 228 mimetypesList = [""] + list(sorted( | |
| 229 set(mimetypes.types_map.values()).union( | |
| 230 set(mimetypes.common_types.values())))) | |
| 231 try: | |
| 232 index = mimetypesList.index("application/octet-stream") | |
| 233 except ValueError: | |
| 234 index = 0 | |
| 235 mimetype, ok = QInputDialog.getItem( | |
| 236 self, | |
| 237 self.trUtf8("Data URI Encoder"), | |
| 238 self.trUtf8("Enter a mime type:"), | |
| 239 mimetypesList, | |
| 240 index, True) | |
| 241 if ok: | |
| 242 return mimetype.lower() | |
| 243 else: | |
| 244 return "" | |
| 245 | |
| 246 def getCode(self): | |
| 247 """ | |
| 248 Public method to get the code. | |
| 249 | |
| 250 @return generated code (string) | |
| 251 """ | |
| 252 return self.outputTextEdit.toPlainText() |
