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Diff view: Fix scrolling when wrapped lines are present

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Also enable line wrapping always instead of using the editor setting
This commit is contained in:
Kovid Goyal 2014-01-29 16:51:08 +05:30
parent a6d8760a5a
commit 75bdef4fe3
1 changed files with 26 additions and 15 deletions
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41
src/calibre/gui2/tweak_book/diff/view.py
View File

@ -64,7 +64,7 @@ class TextBrowser(PlainTextEdit): # {{{
w = self.fontMetrics()
self.number_width = max(map(lambda x:w.width(str(x)), xrange(10)))
self.space_width = w.width(' ')
self.setLineWrapMode(self.WidgetWidth if tprefs['editor_line_wrap'] else self.NoWrap)
self.setLineWrapMode(self.WidgetWidth)
self.setTabStopWidth(tprefs['editor_tab_stop_width'] * self.space_width)
font = self.font()
ff = tprefs['editor_font_family']
@ -835,10 +835,11 @@ class DiffView(QWidget): # {{{
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.changes = []
self.changes = [[], [], []]
self.delta = 0
self.l = l = QHBoxLayout(self)
self.setLayout(l)
self.syncpos = 0
l.setMargin(0), l.setSpacing(0)
self.view = DiffSplit(self)
l.addWidget(self.view)
@ -875,14 +876,11 @@ class DiffView(QWidget): # {{{
def resize_debounced(self):
self.view.resized()
self.calculate_length()
self.adjust_range()
self.view.handle(1).update()
@property
def syncpos(self):
return int(ceil(self.scrollbar.pageStep() * self.SYNC_POSITION))
def get_position_from_scrollbar(self, which):
changes = (self.changes, self.view.left.changes, self.view.right.changes)[which]
changes = self.changes[which]
bar = self.bars[which]
syncpos = self.syncpos + bar.value()
prev = (0, 0, None)
@ -907,7 +905,7 @@ class DiffView(QWidget): # {{{
return 'after', len(self.changes) - 1, offset
def scroll_to(self, which, position):
changes = (self.changes, self.view.left.changes, self.view.right.changes)[which]
changes = self.changes[which]
bar = self.bars[which]
val = None
if position[0] == 'in':
@ -938,7 +936,7 @@ class DiffView(QWidget): # {{{
def clear(self):
with self:
self.view.clear()
self.changes = []
self.changes = [[], [], []]
self.delta = 0
self.scrollbar.setRange(0, 0)
@ -948,23 +946,36 @@ class DiffView(QWidget): # {{{
self.scrollbar.setSingleStep(min(ls.singleStep(), rs.singleStep()))
self.scrollbar.setRange(0, ls.maximum() + self.delta)
self.scrollbar.setVisible(self.view.left.blockCount() > ls.pageStep() or self.view.right.blockCount() > rs.pageStep())
self.syncpos = int(ceil(self.scrollbar.pageStep() * self.SYNC_POSITION))
def finalize(self):
self.view.finalize()
self.changes = []
self.changes = [[], [], []]
self.calculate_length()
self.adjust_range()
def calculate_length(self):
left, right = self.view.left, self.view.right
changes = []
delta = 0
for (l_top, l_bot, kind), (r_top, r_bot, kind) in zip(left.changes, right.changes):
line_number_changes = ([], [])
for v, lmap, changes in zip((self.view.left, self.view.right), ({}, {}), line_number_changes):
b = v.document().firstBlock()
ebl = v.document().documentLayout().ensureBlockLayout
last_line_count = 0
while b.isValid():
ebl(b)
lmap[b.blockNumber()] = last_line_count
last_line_count += b.layout().lineCount()
b = b.next()
for top, bot, kind in v.changes:
changes.append((lmap[top], lmap[bot], kind))
changes = []
for (l_top, l_bot, kind), (r_top, r_bot, kind) in zip(*line_number_changes):
height = max(l_bot - l_top, r_bot - r_top)
top = delta + l_top
changes.append((top, top + height, kind))
delta = top + height - l_bot
self.changes, self.delta = changes, delta
self.adjust_range()
self.changes, self.delta = (changes,) + line_number_changes, delta
def handle_key(self, ev):
amount, d = None, 1