Mercurial Repositories > eric / file comparison
comparison: QScintilla/Exporters/ExporterTEX.py
QScintilla/Exporters/ExporterTEX.py
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2007 - 2009 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing an exporter for TeX. | |
| 8 """ | |
| 9 | |
| 10 # This code is a port of the C++ code found in SciTE 1.74 | |
| 11 # Original code: Copyright 1998-2006 by Neil Hodgson <neilh@scintilla.org> | |
| 12 | |
| 13 import os | |
| 14 | |
| 15 from PyQt4.QtCore import * | |
| 16 from PyQt4.QtGui import * | |
| 17 from PyQt4.Qsci import QsciScintilla | |
| 18 | |
| 19 from ExporterBase import ExporterBase | |
| 20 | |
| 21 import Preferences | |
| 22 | |
| 23 class ExporterTEX(ExporterBase): | |
| 24 """ | |
| 25 Class implementing an exporter for TeX. | |
| 26 """ | |
| 27 CHARZ = ord('z') - ord('a') + 1 | |
| 28 | |
| 29 def __init__(self, editor, parent = None): | |
| 30 """ | |
| 31 Constructor | |
| 32 | |
| 33 @param editor reference to the editor object (QScintilla.Editor.Editor) | |
| 34 @param parent parent object of the exporter (QObject) | |
| 35 """ | |
| 36 ExporterBase.__init__(self, editor, parent) | |
| 37 | |
| 38 def __getTexRGB(self, color): | |
| 39 """ | |
| 40 Private method to convert a color object to a TeX color string | |
| 41 | |
| 42 @param color color object to convert (QColor) | |
| 43 @return TeX color string (string) | |
| 44 """ | |
| 45 # texcolor[rgb]{0,0.5,0}{....} | |
| 46 rf = color.red() / 256.0 | |
| 47 gf = color.green() / 256.0 | |
| 48 bf = color.blue() / 256.0 | |
| 49 | |
| 50 # avoid breakage due to locale setting | |
| 51 r = int(rf * 10 + 0.5) | |
| 52 g = int(gf * 10 + 0.5) | |
| 53 b = int(bf * 10 + 0.5) | |
| 54 | |
| 55 return "%d.%d, %d.%d, %d.%d" % (r / 10, r % 10, g / 10, g % 10, b / 10, b % 10) | |
| 56 | |
| 57 def __texStyle(self, style): | |
| 58 """ | |
| 59 Private method to calculate a style name string for a given style number. | |
| 60 | |
| 61 @param style style number (integer) | |
| 62 @return style name string (string) | |
| 63 """ | |
| 64 buf = "" | |
| 65 if style == 0: | |
| 66 buf = "a" | |
| 67 else: | |
| 68 while style > 0: | |
| 69 buf += chr(ord('a') + (style % self.CHARZ)) | |
| 70 style /= self.CHARZ | |
| 71 return buf | |
| 72 | |
| 73 def __defineTexStyle(self, font, color, paper, file, istyle): | |
| 74 """ | |
| 75 Private method to define a new TeX style. | |
| 76 | |
| 77 @param font the font to be used (QFont) | |
| 78 @param color the foreground color to be used (QColor) | |
| 79 @param paper the background color to be used (QColor) | |
| 80 @param file reference to the open file to write to (file object) | |
| 81 @param istyle style number (integer) | |
| 82 """ | |
| 83 closing_brackets = 3 | |
| 84 file.write("\\newcommand{\\eric%s}[1]{\\noindent{\\ttfamily{" % \ | |
| 85 self.__texStyle(istyle)) | |
| 86 if font.italic(): | |
| 87 file.write("\\textit{") | |
| 88 closing_brackets += 1 | |
| 89 if font.bold(): | |
| 90 file.write("\\textbf{") | |
| 91 closing_brackets += 1 | |
| 92 if color != self.defaultColor: | |
| 93 file.write("\\textcolor[rgb]{%s}{" % self.__getTexRGB(color)) | |
| 94 closing_brackets += 1 | |
| 95 if paper != self.defaultPaper: | |
| 96 file.write("\\colorbox[rgb]{%s}{" % self.__getTexRGB(paper)) | |
| 97 closing_brackets += 1 | |
| 98 file.write("#1%s\n" % ('}' * closing_brackets)) | |
| 99 | |
| 100 def exportSource(self): | |
| 101 """ | |
| 102 Public method performing the export. | |
| 103 """ | |
| 104 filename = self._getFileName(self.trUtf8("TeX Files (*.tex)")) | |
| 105 if not filename: | |
| 106 return | |
| 107 | |
| 108 try: | |
| 109 QApplication.setOverrideCursor(QCursor(Qt.WaitCursor)) | |
| 110 QApplication.processEvents() | |
| 111 | |
| 112 self.editor.recolor(0, -1) | |
| 113 | |
| 114 tabSize = Preferences.getEditor("TabWidth") | |
| 115 if tabSize == 0: | |
| 116 tabSize = 4 | |
| 117 | |
| 118 onlyStylesUsed = Preferences.getEditorExporter("TeX/OnlyStylesUsed") | |
| 119 titleFullPath = Preferences.getEditorExporter("TeX/FullPathAsTitle") | |
| 120 | |
| 121 lex = self.editor.getLexer() | |
| 122 self.defaultPaper = lex and \ | |
| 123 lex.paper(QsciScintilla.STYLE_DEFAULT) or \ | |
| 124 self.editor.paper().name() | |
| 125 self.defaultColor = lex and \ | |
| 126 lex.color(QsciScintilla.STYLE_DEFAULT) or \ | |
| 127 self.editor.color().name() | |
| 128 self.defaultFont = lex and \ | |
| 129 lex.color(QsciScintilla.STYLE_DEFAULT) or \ | |
| 130 Preferences.getEditorOtherFonts("DefaultFont") | |
| 131 | |
| 132 lengthDoc = self.editor.length() | |
| 133 styleIsUsed = {} | |
| 134 if onlyStylesUsed: | |
| 135 for index in range(QsciScintilla.STYLE_MAX + 1): | |
| 136 styleIsUsed[index] = False | |
| 137 # check the used styles | |
| 138 pos = 0 | |
| 139 while pos < lengthDoc: | |
| 140 styleIsUsed[self.editor.styleAt(pos) & 0x7F] = True | |
| 141 pos += 1 | |
| 142 else: | |
| 143 for index in range(QsciScintilla.STYLE_MAX + 1): | |
| 144 styleIsUsed[index] = True | |
| 145 styleIsUsed[QsciScintilla.STYLE_DEFAULT] = True | |
| 146 | |
| 147 try: | |
| 148 f = open(filename, "wb") | |
| 149 | |
| 150 f.write("\\documentclass[a4paper]{article}\n") | |
| 151 f.write("\\usepackage[a4paper,margin=1.5cm]{geometry}\n") | |
| 152 f.write("\\usepackage[T1]{fontenc}\n") | |
| 153 f.write("\\usepackage{color}\n") | |
| 154 f.write("\\usepackage{alltt}\n") | |
| 155 f.write("\\usepackage{times}\n") | |
| 156 if self.editor.isUtf8(): | |
| 157 f.write("\\usepackage[utf8]{inputenc}\n") | |
| 158 else: | |
| 159 f.write("\\usepackage[latin1]{inputenc}\n") | |
| 160 | |
| 161 if lex: | |
| 162 istyle = 0 | |
| 163 while istyle <= QsciScintilla.STYLE_MAX: | |
| 164 if (istyle <= QsciScintilla.STYLE_DEFAULT or \ | |
| 165 istyle > QsciScintilla.STYLE_LASTPREDEFINED) and \ | |
| 166 styleIsUsed[istyle]: | |
| 167 if lex.description(istyle) or \ | |
| 168 istyle == QsciScintilla.STYLE_DEFAULT: | |
| 169 font = lex.font(istyle) | |
| 170 colour = lex.color(istyle) | |
| 171 paper = lex.paper(istyle) | |
| 172 | |
| 173 self.__defineTexStyle(font, colour, paper, f, istyle) | |
| 174 istyle += 1 | |
| 175 else: | |
| 176 colour = self.editor.color() | |
| 177 paper = self.editor.paper() | |
| 178 font = Preferences.getEditorOtherFonts("DefaultFont") | |
| 179 | |
| 180 self.__defineTexStyle(font, colour, paper, f, 0) | |
| 181 self.__defineTexStyle(font, colour, paper, f, | |
| 182 QsciScintilla.STYLE_DEFAULT) | |
| 183 | |
| 184 f.write("\\begin{document}\n\n") | |
| 185 if titleFullPath: | |
| 186 title = self.editor.getFileName() | |
| 187 else: | |
| 188 title = os.path.basename(self.editor.getFileName()) | |
| 189 f.write("Source File: %s\n\n\\noindent\n\\tiny{\n" % title) | |
| 190 | |
| 191 styleCurrent = self.editor.styleAt(0) | |
| 192 f.write("\\eric%s{" % self.__texStyle(styleCurrent)) | |
| 193 | |
| 194 lineIdx = 0 | |
| 195 pos = 0 | |
| 196 | |
| 197 while pos < lengthDoc: | |
| 198 ch = self.editor.rawCharAt(pos) | |
| 199 style = self.editor.styleAt(pos) | |
| 200 if style != styleCurrent: | |
| 201 # new style | |
| 202 f.write("}\n\\eric%s{" % self.__texStyle(style)) | |
| 203 styleCurrent = style | |
| 204 | |
| 205 if ch == '\t': | |
| 206 ts = tabSize - (lineIdx % tabSize) | |
| 207 lineIdx += ts - 1 | |
| 208 f.write("\\hspace*{%dem}" % ts) | |
| 209 elif ch == '\\': | |
| 210 f.write("{\\textbackslash}") | |
| 211 elif ch in ['>', '<', '@']: | |
| 212 f.write("$%c$" % ch) | |
| 213 elif ch in ['{', '}', '^', '_', '&', '$', '#', '%', '~']: | |
| 214 f.write("\\%c" % ch) | |
| 215 elif ch in ['\r', '\n']: | |
| 216 lineIdx = -1 # because incremented below | |
| 217 if ch == '\r' and self.editor.rawCharAt(pos + 1) == '\n': | |
| 218 pos += 1 # skip the LF | |
| 219 styleCurrent = self.editor.styleAt(pos + 1) | |
| 220 f.write("} \\\\\n\\eric%s{" % self.__texStyle(styleCurrent)) | |
| 221 elif ch == ' ': | |
| 222 if self.editor.rawCharAt(pos + 1) == ' ': | |
| 223 f.write("{\\hspace*{1em}}") | |
| 224 else: | |
| 225 f.write(' ') | |
| 226 else: | |
| 227 f.write(ch) | |
| 228 lineIdx += 1 | |
| 229 pos += 1 | |
| 230 | |
| 231 # close last empty style macros and document too | |
| 232 f.write("}\n} %end tiny\n\n\\end{document}\n") | |
| 233 f.close() | |
| 234 except IOError, err: | |
| 235 QApplication.restoreOverrideCursor() | |
| 236 QMessageBox.critical(self.editor, | |
| 237 self.trUtf8("Export source"), | |
| 238 self.trUtf8(\ | |
| 239 """<p>The source could not be exported to <b>{0}</b>.</p>""" | |
| 240 """<p>Reason: {1}</p>""")\ | |
| 241 .format(filename, unicode(err)), | |
| 242 QMessageBox.StandardButtons(\ | |
| 243 QMessageBox.Ok)) | |
| 244 finally: | |
| 245 QApplication.restoreOverrideCursor() |
