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author | Tim Peters <tim.peters@gmail.com> | 2004-07-18 06:16:08 (GMT) |
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committer | Tim Peters <tim.peters@gmail.com> | 2004-07-18 06:16:08 (GMT) |
commit | 182b5aca27d376b08a2904bed42b751496f932f3 (patch) | |
tree | df13115820dbc879c0fe2eae488c9f8c0215a7da /Lib/lib-old/Para.py | |
parent | e6ddc8b20b493fef2e7cffb2e1351fe1d238857e (diff) | |
download | cpython-182b5aca27d376b08a2904bed42b751496f932f3.zip cpython-182b5aca27d376b08a2904bed42b751496f932f3.tar.gz cpython-182b5aca27d376b08a2904bed42b751496f932f3.tar.bz2 |
Whitespace normalization, via reindent.py.
Diffstat (limited to 'Lib/lib-old/Para.py')
-rw-r--r-- | Lib/lib-old/Para.py | 656 |
1 files changed, 328 insertions, 328 deletions
diff --git a/Lib/lib-old/Para.py b/Lib/lib-old/Para.py index 2e6aa4c..2fd8dc6 100644 --- a/Lib/lib-old/Para.py +++ b/Lib/lib-old/Para.py @@ -1,4 +1,4 @@ -# Text formatting abstractions +# Text formatting abstractions # Note -- this module is obsolete, it's too slow anyway @@ -14,330 +14,330 @@ Int = type(0) # different screen locations. Once rendered, it can be queried # for mouse hits, and parts of the text can be highlighted class Para: - # - def __init__(self): - self.words = [] # The words - self.just = 'l' # Justification: 'l', 'r', 'lr' or 'c' - self.indent_left = self.indent_right = self.indent_hang = 0 - # Final lay-out parameters, may change - self.left = self.top = self.right = self.bottom = \ - self.width = self.height = self.lines = None - # - # Add a word, computing size information for it. - # Words may also be added manually by appending to self.words - # Each word should be a 7-tuple: - # (font, text, width, space, stretch, ascent, descent) - def addword(self, d, font, text, space, stretch): - if font is not None: - d.setfont(font) - width = d.textwidth(text) - ascent = d.baseline() - descent = d.lineheight() - ascent - spw = d.textwidth(' ') - space = space * spw - stretch = stretch * spw - tuple = (font, text, width, space, stretch, ascent, descent) - self.words.append(tuple) - # - # Hooks to begin and end anchors -- insert numbers in the word list! - def bgn_anchor(self, id): - self.words.append(id) - # - def end_anchor(self, id): - self.words.append(0) - # - # Return the total length (width) of the text added so far, in pixels - def getlength(self): - total = 0 - for word in self.words: - if type(word) is not Int: - total = total + word[2] + word[3] - return total - # - # Tab to a given position (relative to the current left indent): - # remove all stretch, add fixed space up to the new indent. - # If the current position is already at the tab stop, - # don't add any new space (but still remove the stretch) - def tabto(self, tab): - total = 0 - as, de = 1, 0 - for i in range(len(self.words)): - word = self.words[i] - if type(word) is Int: continue - (fo, te, wi, sp, st, as, de) = word - self.words[i] = (fo, te, wi, sp, 0, as, de) - total = total + wi + sp - if total < tab: - self.words.append((None, '', 0, tab-total, 0, as, de)) - # - # Make a hanging tag: tab to hang, increment indent_left by hang, - # and reset indent_hang to -hang - def makehangingtag(self, hang): - self.tabto(hang) - self.indent_left = self.indent_left + hang - self.indent_hang = -hang - # - # Decide where the line breaks will be given some screen width - def layout(self, linewidth): - self.width = linewidth - height = 0 - self.lines = lines = [] - avail1 = self.width - self.indent_left - self.indent_right - avail = avail1 - self.indent_hang - words = self.words - i = 0 - n = len(words) - lastfont = None - while i < n: - firstfont = lastfont - charcount = 0 - width = 0 - stretch = 0 - ascent = 0 - descent = 0 - lsp = 0 - j = i - while i < n: - word = words[i] - if type(word) is Int: - if word > 0 and width >= avail: - break - i = i+1 - continue - fo, te, wi, sp, st, as, de = word - if width + wi > avail and width > 0 and wi > 0: - break - if fo is not None: - lastfont = fo - if width == 0: - firstfont = fo - charcount = charcount + len(te) + (sp > 0) - width = width + wi + sp - lsp = sp - stretch = stretch + st - lst = st - ascent = max(ascent, as) - descent = max(descent, de) - i = i+1 - while i > j and type(words[i-1]) is Int and \ - words[i-1] > 0: i = i-1 - width = width - lsp - if i < n: - stretch = stretch - lst - else: - stretch = 0 - tuple = i-j, firstfont, charcount, width, stretch, \ - ascent, descent - lines.append(tuple) - height = height + ascent + descent - avail = avail1 - self.height = height - # - # Call a function for all words in a line - def visit(self, wordfunc, anchorfunc): - avail1 = self.width - self.indent_left - self.indent_right - avail = avail1 - self.indent_hang - v = self.top - i = 0 - for tuple in self.lines: - wordcount, firstfont, charcount, width, stretch, \ - ascent, descent = tuple - h = self.left + self.indent_left - if i == 0: h = h + self.indent_hang - extra = 0 - if self.just == 'r': h = h + avail - width - elif self.just == 'c': h = h + (avail - width) / 2 - elif self.just == 'lr' and stretch > 0: - extra = avail - width - v2 = v + ascent + descent - for j in range(i, i+wordcount): - word = self.words[j] - if type(word) is Int: - ok = anchorfunc(self, tuple, word, \ - h, v) - if ok is not None: return ok - continue - fo, te, wi, sp, st, as, de = word - if extra > 0 and stretch > 0: - ex = extra * st / stretch - extra = extra - ex - stretch = stretch - st - else: - ex = 0 - h2 = h + wi + sp + ex - ok = wordfunc(self, tuple, word, h, v, \ - h2, v2, (j==i), (j==i+wordcount-1)) - if ok is not None: return ok - h = h2 - v = v2 - i = i + wordcount - avail = avail1 - # - # Render a paragraph in "drawing object" d, using the rectangle - # given by (left, top, right) with an unspecified bottom. - # Return the computed bottom of the text. - def render(self, d, left, top, right): - if self.width != right-left: - self.layout(right-left) - self.left = left - self.top = top - self.right = right - self.bottom = self.top + self.height - self.anchorid = 0 - try: - self.d = d - self.visit(self.__class__._renderword, \ - self.__class__._renderanchor) - finally: - self.d = None - return self.bottom - # - def _renderword(self, tuple, word, h, v, h2, v2, isfirst, islast): - if word[0] is not None: self.d.setfont(word[0]) - baseline = v + tuple[5] - self.d.text((h, baseline - word[5]), word[1]) - if self.anchorid > 0: - self.d.line((h, baseline+2), (h2, baseline+2)) - # - def _renderanchor(self, tuple, word, h, v): - self.anchorid = word - # - # Return which anchor(s) was hit by the mouse - def hitcheck(self, mouseh, mousev): - self.mouseh = mouseh - self.mousev = mousev - self.anchorid = 0 - self.hits = [] - self.visit(self.__class__._hitcheckword, \ - self.__class__._hitcheckanchor) - return self.hits - # - def _hitcheckword(self, tuple, word, h, v, h2, v2, isfirst, islast): - if self.anchorid > 0 and h <= self.mouseh <= h2 and \ - v <= self.mousev <= v2: - self.hits.append(self.anchorid) - # - def _hitcheckanchor(self, tuple, word, h, v): - self.anchorid = word - # - # Return whether the given anchor id is present - def hasanchor(self, id): - return id in self.words or -id in self.words - # - # Extract the raw text from the word list, substituting one space - # for non-empty inter-word space, and terminating with '\n' - def extract(self): - text = '' - for w in self.words: - if type(w) is not Int: - word = w[1] - if w[3]: word = word + ' ' - text = text + word - return text + '\n' - # - # Return which character position was hit by the mouse, as - # an offset in the entire text as returned by extract(). - # Return None if the mouse was not in this paragraph - def whereis(self, d, mouseh, mousev): - if mousev < self.top or mousev > self.bottom: - return None - self.mouseh = mouseh - self.mousev = mousev - self.lastfont = None - self.charcount = 0 - try: - self.d = d - return self.visit(self.__class__._whereisword, \ - self.__class__._whereisanchor) - finally: - self.d = None - # - def _whereisword(self, tuple, word, h1, v1, h2, v2, isfirst, islast): - fo, te, wi, sp, st, as, de = word - if fo is not None: self.lastfont = fo - h = h1 - if isfirst: h1 = 0 - if islast: h2 = 999999 - if not (v1 <= self.mousev <= v2 and h1 <= self.mouseh <= h2): - self.charcount = self.charcount + len(te) + (sp > 0) - return - if self.lastfont is not None: - self.d.setfont(self.lastfont) - cc = 0 - for c in te: - cw = self.d.textwidth(c) - if self.mouseh <= h + cw/2: - return self.charcount + cc - cc = cc+1 - h = h+cw - self.charcount = self.charcount + cc - if self.mouseh <= (h+h2) / 2: - return self.charcount - else: - return self.charcount + 1 - # - def _whereisanchor(self, tuple, word, h, v): - pass - # - # Return screen position corresponding to position in paragraph. - # Return tuple (h, vtop, vbaseline, vbottom). - # This is more or less the inverse of whereis() - def screenpos(self, d, pos): - if pos < 0: - ascent, descent = self.lines[0][5:7] - return self.left, self.top, self.top + ascent, \ - self.top + ascent + descent - self.pos = pos - self.lastfont = None - try: - self.d = d - ok = self.visit(self.__class__._screenposword, \ - self.__class__._screenposanchor) - finally: - self.d = None - if ok is None: - ascent, descent = self.lines[-1][5:7] - ok = self.right, self.bottom - ascent - descent, \ - self.bottom - descent, self.bottom - return ok - # - def _screenposword(self, tuple, word, h1, v1, h2, v2, isfirst, islast): - fo, te, wi, sp, st, as, de = word - if fo is not None: self.lastfont = fo - cc = len(te) + (sp > 0) - if self.pos > cc: - self.pos = self.pos - cc - return - if self.pos < cc: - self.d.setfont(self.lastfont) - h = h1 + self.d.textwidth(te[:self.pos]) - else: - h = h2 - ascent, descent = tuple[5:7] - return h, v1, v1+ascent, v2 - # - def _screenposanchor(self, tuple, word, h, v): - pass - # - # Invert the stretch of text between pos1 and pos2. - # If pos1 is None, the beginning is implied; - # if pos2 is None, the end is implied. - # Undoes its own effect when called again with the same arguments - def invert(self, d, pos1, pos2): - if pos1 is None: - pos1 = self.left, self.top, self.top, self.top - else: - pos1 = self.screenpos(d, pos1) - if pos2 is None: - pos2 = self.right, self.bottom,self.bottom,self.bottom - else: - pos2 = self.screenpos(d, pos2) - h1, top1, baseline1, bottom1 = pos1 - h2, top2, baseline2, bottom2 = pos2 - if bottom1 <= top2: - d.invert((h1, top1), (self.right, bottom1)) - h1 = self.left - if bottom1 < top2: - d.invert((h1, bottom1), (self.right, top2)) - top1, bottom1 = top2, bottom2 - d.invert((h1, top1), (h2, bottom2)) + # + def __init__(self): + self.words = [] # The words + self.just = 'l' # Justification: 'l', 'r', 'lr' or 'c' + self.indent_left = self.indent_right = self.indent_hang = 0 + # Final lay-out parameters, may change + self.left = self.top = self.right = self.bottom = \ + self.width = self.height = self.lines = None + # + # Add a word, computing size information for it. + # Words may also be added manually by appending to self.words + # Each word should be a 7-tuple: + # (font, text, width, space, stretch, ascent, descent) + def addword(self, d, font, text, space, stretch): + if font is not None: + d.setfont(font) + width = d.textwidth(text) + ascent = d.baseline() + descent = d.lineheight() - ascent + spw = d.textwidth(' ') + space = space * spw + stretch = stretch * spw + tuple = (font, text, width, space, stretch, ascent, descent) + self.words.append(tuple) + # + # Hooks to begin and end anchors -- insert numbers in the word list! + def bgn_anchor(self, id): + self.words.append(id) + # + def end_anchor(self, id): + self.words.append(0) + # + # Return the total length (width) of the text added so far, in pixels + def getlength(self): + total = 0 + for word in self.words: + if type(word) is not Int: + total = total + word[2] + word[3] + return total + # + # Tab to a given position (relative to the current left indent): + # remove all stretch, add fixed space up to the new indent. + # If the current position is already at the tab stop, + # don't add any new space (but still remove the stretch) + def tabto(self, tab): + total = 0 + as, de = 1, 0 + for i in range(len(self.words)): + word = self.words[i] + if type(word) is Int: continue + (fo, te, wi, sp, st, as, de) = word + self.words[i] = (fo, te, wi, sp, 0, as, de) + total = total + wi + sp + if total < tab: + self.words.append((None, '', 0, tab-total, 0, as, de)) + # + # Make a hanging tag: tab to hang, increment indent_left by hang, + # and reset indent_hang to -hang + def makehangingtag(self, hang): + self.tabto(hang) + self.indent_left = self.indent_left + hang + self.indent_hang = -hang + # + # Decide where the line breaks will be given some screen width + def layout(self, linewidth): + self.width = linewidth + height = 0 + self.lines = lines = [] + avail1 = self.width - self.indent_left - self.indent_right + avail = avail1 - self.indent_hang + words = self.words + i = 0 + n = len(words) + lastfont = None + while i < n: + firstfont = lastfont + charcount = 0 + width = 0 + stretch = 0 + ascent = 0 + descent = 0 + lsp = 0 + j = i + while i < n: + word = words[i] + if type(word) is Int: + if word > 0 and width >= avail: + break + i = i+1 + continue + fo, te, wi, sp, st, as, de = word + if width + wi > avail and width > 0 and wi > 0: + break + if fo is not None: + lastfont = fo + if width == 0: + firstfont = fo + charcount = charcount + len(te) + (sp > 0) + width = width + wi + sp + lsp = sp + stretch = stretch + st + lst = st + ascent = max(ascent, as) + descent = max(descent, de) + i = i+1 + while i > j and type(words[i-1]) is Int and \ + words[i-1] > 0: i = i-1 + width = width - lsp + if i < n: + stretch = stretch - lst + else: + stretch = 0 + tuple = i-j, firstfont, charcount, width, stretch, \ + ascent, descent + lines.append(tuple) + height = height + ascent + descent + avail = avail1 + self.height = height + # + # Call a function for all words in a line + def visit(self, wordfunc, anchorfunc): + avail1 = self.width - self.indent_left - self.indent_right + avail = avail1 - self.indent_hang + v = self.top + i = 0 + for tuple in self.lines: + wordcount, firstfont, charcount, width, stretch, \ + ascent, descent = tuple + h = self.left + self.indent_left + if i == 0: h = h + self.indent_hang + extra = 0 + if self.just == 'r': h = h + avail - width + elif self.just == 'c': h = h + (avail - width) / 2 + elif self.just == 'lr' and stretch > 0: + extra = avail - width + v2 = v + ascent + descent + for j in range(i, i+wordcount): + word = self.words[j] + if type(word) is Int: + ok = anchorfunc(self, tuple, word, \ + h, v) + if ok is not None: return ok + continue + fo, te, wi, sp, st, as, de = word + if extra > 0 and stretch > 0: + ex = extra * st / stretch + extra = extra - ex + stretch = stretch - st + else: + ex = 0 + h2 = h + wi + sp + ex + ok = wordfunc(self, tuple, word, h, v, \ + h2, v2, (j==i), (j==i+wordcount-1)) + if ok is not None: return ok + h = h2 + v = v2 + i = i + wordcount + avail = avail1 + # + # Render a paragraph in "drawing object" d, using the rectangle + # given by (left, top, right) with an unspecified bottom. + # Return the computed bottom of the text. + def render(self, d, left, top, right): + if self.width != right-left: + self.layout(right-left) + self.left = left + self.top = top + self.right = right + self.bottom = self.top + self.height + self.anchorid = 0 + try: + self.d = d + self.visit(self.__class__._renderword, \ + self.__class__._renderanchor) + finally: + self.d = None + return self.bottom + # + def _renderword(self, tuple, word, h, v, h2, v2, isfirst, islast): + if word[0] is not None: self.d.setfont(word[0]) + baseline = v + tuple[5] + self.d.text((h, baseline - word[5]), word[1]) + if self.anchorid > 0: + self.d.line((h, baseline+2), (h2, baseline+2)) + # + def _renderanchor(self, tuple, word, h, v): + self.anchorid = word + # + # Return which anchor(s) was hit by the mouse + def hitcheck(self, mouseh, mousev): + self.mouseh = mouseh + self.mousev = mousev + self.anchorid = 0 + self.hits = [] + self.visit(self.__class__._hitcheckword, \ + self.__class__._hitcheckanchor) + return self.hits + # + def _hitcheckword(self, tuple, word, h, v, h2, v2, isfirst, islast): + if self.anchorid > 0 and h <= self.mouseh <= h2 and \ + v <= self.mousev <= v2: + self.hits.append(self.anchorid) + # + def _hitcheckanchor(self, tuple, word, h, v): + self.anchorid = word + # + # Return whether the given anchor id is present + def hasanchor(self, id): + return id in self.words or -id in self.words + # + # Extract the raw text from the word list, substituting one space + # for non-empty inter-word space, and terminating with '\n' + def extract(self): + text = '' + for w in self.words: + if type(w) is not Int: + word = w[1] + if w[3]: word = word + ' ' + text = text + word + return text + '\n' + # + # Return which character position was hit by the mouse, as + # an offset in the entire text as returned by extract(). + # Return None if the mouse was not in this paragraph + def whereis(self, d, mouseh, mousev): + if mousev < self.top or mousev > self.bottom: + return None + self.mouseh = mouseh + self.mousev = mousev + self.lastfont = None + self.charcount = 0 + try: + self.d = d + return self.visit(self.__class__._whereisword, \ + self.__class__._whereisanchor) + finally: + self.d = None + # + def _whereisword(self, tuple, word, h1, v1, h2, v2, isfirst, islast): + fo, te, wi, sp, st, as, de = word + if fo is not None: self.lastfont = fo + h = h1 + if isfirst: h1 = 0 + if islast: h2 = 999999 + if not (v1 <= self.mousev <= v2 and h1 <= self.mouseh <= h2): + self.charcount = self.charcount + len(te) + (sp > 0) + return + if self.lastfont is not None: + self.d.setfont(self.lastfont) + cc = 0 + for c in te: + cw = self.d.textwidth(c) + if self.mouseh <= h + cw/2: + return self.charcount + cc + cc = cc+1 + h = h+cw + self.charcount = self.charcount + cc + if self.mouseh <= (h+h2) / 2: + return self.charcount + else: + return self.charcount + 1 + # + def _whereisanchor(self, tuple, word, h, v): + pass + # + # Return screen position corresponding to position in paragraph. + # Return tuple (h, vtop, vbaseline, vbottom). + # This is more or less the inverse of whereis() + def screenpos(self, d, pos): + if pos < 0: + ascent, descent = self.lines[0][5:7] + return self.left, self.top, self.top + ascent, \ + self.top + ascent + descent + self.pos = pos + self.lastfont = None + try: + self.d = d + ok = self.visit(self.__class__._screenposword, \ + self.__class__._screenposanchor) + finally: + self.d = None + if ok is None: + ascent, descent = self.lines[-1][5:7] + ok = self.right, self.bottom - ascent - descent, \ + self.bottom - descent, self.bottom + return ok + # + def _screenposword(self, tuple, word, h1, v1, h2, v2, isfirst, islast): + fo, te, wi, sp, st, as, de = word + if fo is not None: self.lastfont = fo + cc = len(te) + (sp > 0) + if self.pos > cc: + self.pos = self.pos - cc + return + if self.pos < cc: + self.d.setfont(self.lastfont) + h = h1 + self.d.textwidth(te[:self.pos]) + else: + h = h2 + ascent, descent = tuple[5:7] + return h, v1, v1+ascent, v2 + # + def _screenposanchor(self, tuple, word, h, v): + pass + # + # Invert the stretch of text between pos1 and pos2. + # If pos1 is None, the beginning is implied; + # if pos2 is None, the end is implied. + # Undoes its own effect when called again with the same arguments + def invert(self, d, pos1, pos2): + if pos1 is None: + pos1 = self.left, self.top, self.top, self.top + else: + pos1 = self.screenpos(d, pos1) + if pos2 is None: + pos2 = self.right, self.bottom,self.bottom,self.bottom + else: + pos2 = self.screenpos(d, pos2) + h1, top1, baseline1, bottom1 = pos1 + h2, top2, baseline2, bottom2 = pos2 + if bottom1 <= top2: + d.invert((h1, top1), (self.right, bottom1)) + h1 = self.left + if bottom1 < top2: + d.invert((h1, bottom1), (self.right, top2)) + top1, bottom1 = top2, bottom2 + d.invert((h1, top1), (h2, bottom2)) |