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Kovid Goyal 2012-05-30 00:24:08 +05:30
parent 433ca9b725
commit f5f7425cff
1 changed files with 23 additions and 5 deletions
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28
src/calibre/gui2/viewer/toc.py
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@ -69,20 +69,38 @@ class TOCItem(QStandardItem):
# to count a partial line as being visible. # to count a partial line as being visible.
if spine_index >= self.starts_at and spine_index <= self.ends_at: if spine_index >= self.starts_at and spine_index <= self.ends_at:
# The position at which this anchor is present in the document
start_pos = anchor_map.get(self.start_anchor, 0) start_pos = anchor_map.get(self.start_anchor, 0)
psp = [anchor_map.get(x, 0) for x in self.possible_end_anchors] psp = []
if self.ends_at == spine_index: if self.ends_at == spine_index:
# Anchors that could possibly indicate the start of the next
# section and therefore the end of this section.
# self.possible_end_anchors is a set of anchors belonging to
# toc entries with depth <= self.depth that are also not
# ancestors of this entry.
psp = [anchor_map.get(x, 0) for x in self.possible_end_anchors]
psp = [x for x in psp if x >= start_pos] psp = [x for x in psp if x >= start_pos]
# The end position. The first anchor whose pos is >= self.start_pos
# or if the end is not in this spine item, we set it to the bottom
# of the window +1
end_pos = min(psp) if psp else (bottom+1 if self.ends_at >= end_pos = min(psp) if psp else (bottom+1 if self.ends_at >=
spine_index else 0) spine_index else 0)
if spine_index > self.starts_at and spine_index < self.ends_at: if spine_index > self.starts_at and spine_index < self.ends_at:
# The entire spine item is contained in this entry
is_being_viewed = True is_being_viewed = True
elif spine_index == self.starts_at and bottom-25 >= start_pos: elif (spine_index == self.starts_at and bottom-25 >= start_pos and
if spine_index != self.ends_at or top < end_pos: # This spine item contains the start
# The start position is before the end of the viewport
spine_index != self.ends_at or top < end_pos):
# The end position is after the start of the viewport
is_being_viewed = True is_being_viewed = True
elif spine_index == self.ends_at and top < end_pos: elif (spine_index == self.ends_at and top < end_pos and
if spine_index != self.starts_at or bottom-25 >= start_pos: # This spine item contains the end
# The end position is after the start of the viewport
spine_index != self.starts_at or bottom-25 >= start_pos):
# The start position is before the end of the viewport
is_being_viewed = True is_being_viewed = True
changed = is_being_viewed != self.is_being_viewed changed = is_being_viewed != self.is_being_viewed
self.is_being_viewed = is_being_viewed self.is_being_viewed = is_being_viewed
if changed: if changed: