Cutlery/calibre
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Context menu actions to go to next/previous change

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This commit is contained in:
Kovid Goyal 2014-01-25 16:52:28 +05:30
parent 183048d01a
commit ce99832337
1 changed files with 37 additions and 1 deletions
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38
src/calibre/gui2/tweak_book/diff.py
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@ -48,6 +48,7 @@ class TextBrowser(PlainTextEdit): # {{{
resized = pyqtSignal()
wheel_event = pyqtSignal(object)
goto_change = pyqtSignal(object)
def __init__(self, right=False, parent=None):
PlainTextEdit.__init__(self, parent)
@ -114,6 +115,30 @@ class TextBrowser(PlainTextEdit): # {{{
i = unicode(self.textCursor().selectedText())
if i:
a(QIcon(I('edit-copy.png')), _('Copy to clipboard'), self.copy)
if len(self.changes) > 0:
try:
b = self.cursorForPosition(pos).block().blockNumber()
except Exception:
b = -1
if b > -1:
pc = nc = None
for i, (top, bot, kind) in enumerate(self.changes):
if top <= b and bot >= b:
if len(self.changes) == 1:
break
pc = (i - 1) % len(self.changes)
nc = (i + 1) % len(self.changes)
if bot < b:
pc = i
if top > b:
nc = i
break
if pc is not None:
a(QIcon(I('arrow-up.png')), _('Previous change'), partial(self.goto_change.emit, pc))
if nc is not None:
a(QIcon(I('arrow-down.png')), _('Next change'), partial(self.goto_change.emit, nc))
if len(m.actions()) > 0:
m.exec_(self.mapToGlobal(pos))
@ -755,6 +780,17 @@ class DiffView(QWidget): # {{{
self.view.left.resized.connect(self.resized)
for v in self.view.left, self.view.right, self.view.handle(1):
v.wheel_event.connect(self.scrollbar.wheelEvent)
if hasattr(v, 'goto_change'):
v.goto_change.connect(self.goto_change)
def goto_change(self, change):
for v in (self.view.left, self.view.right):
c = QTextCursor(v.document().findBlockByNumber(v.changes[change][0]))
v.setTextCursor(c)
v.centerCursor()
with self:
self.scroll_to(0, self.get_position_from_scrollbar(1))
self.view.handle(1).update()
def resized(self):
self.resize_timer.start(100)
@ -805,7 +841,7 @@ class DiffView(QWidget): # {{{
val = start + offset
bar.setValue(val - syncpos)
def scrolled(self, which):
def scrolled(self, which, *args):
if self.syncing:
return
position = self.get_position_from_scrollbar(which)