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Use scrollRequested signal instead of paintEvent.

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Closes #300.
This commit is contained in:
Florian Bruhin 2014-12-02 21:27:11 +01:00
parent d94f848c82
commit 03fb21c476
1 changed files with 22 additions and 27 deletions
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49
qutebrowser/widgets/webview.py
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@ -115,6 +115,9 @@ class WebView(QWebView):
page.mainFrame().loadStarted.connect(self.on_load_started) page.mainFrame().loadStarted.connect(self.on_load_started)
self.urlChanged.connect(self.on_url_changed) self.urlChanged.connect(self.on_url_changed)
page.mainFrame().loadFinished.connect(self.on_load_finished) page.mainFrame().loadFinished.connect(self.on_load_finished)
page.scrollRequested.connect(self.on_scroll_requested)
# Calculate scroll position once
self.on_scroll_requested()
self.loadProgress.connect(lambda p: setattr(self, 'progress', p)) self.loadProgress.connect(lambda p: setattr(self, 'progress', p))
self.page().statusBarMessage.connect( self.page().statusBarMessage.connect(
lambda msg: setattr(self, 'statusbar_message', msg)) lambda msg: setattr(self, 'statusbar_message', msg))
@ -390,6 +393,25 @@ class WebView(QWebView):
modeman.maybe_enter(self._win_id, usertypes.KeyMode.insert, modeman.maybe_enter(self._win_id, usertypes.KeyMode.insert,
'load finished') 'load finished')
@pyqtSlot()
def on_scroll_requested(self):
"""Recalculate scroll percentage when the page got scrolled.
If necessary, we emit scroll_pos_changed so the statusbar percentage
updates.
"""
frame = self.page().mainFrame()
new_pos = (frame.scrollBarValue(Qt.Horizontal),
frame.scrollBarValue(Qt.Vertical))
if self._old_scroll_pos != new_pos:
self._old_scroll_pos = new_pos
m = (frame.scrollBarMaximum(Qt.Horizontal),
frame.scrollBarMaximum(Qt.Vertical))
perc = (round(100 * new_pos[0] / m[0]) if m[0] != 0 else 0,
round(100 * new_pos[1] / m[1]) if m[1] != 0 else 0)
self.scroll_pos = perc
self.scroll_pos_changed.emit(*perc)
@pyqtSlot(str) @pyqtSlot(str)
def set_force_open_target(self, target): def set_force_open_target(self, target):
"""Change the forced link target. Setter for _force_open_target. """Change the forced link target. Setter for _force_open_target.
@ -427,33 +449,6 @@ class WebView(QWebView):
window=self._win_id) window=self._win_id)
return tabbed_browser.tabopen() return tabbed_browser.tabopen()
def paintEvent(self, e):
"""Extend paintEvent to emit a signal if the scroll position changed.
This is a bit of a hack: We listen to repaint requests here, in the
hope a repaint will always be requested when scrolling, and if the
scroll position actually changed, we emit a signal.
Args:
e: The QPaintEvent.
Return:
The superclass event return value.
"""
frame = self.page().mainFrame()
new_pos = (frame.scrollBarValue(Qt.Horizontal),
frame.scrollBarValue(Qt.Vertical))
if self._old_scroll_pos != new_pos:
self._old_scroll_pos = new_pos
m = (frame.scrollBarMaximum(Qt.Horizontal),
frame.scrollBarMaximum(Qt.Vertical))
perc = (round(100 * new_pos[0] / m[0]) if m[0] != 0 else 0,
round(100 * new_pos[1] / m[1]) if m[1] != 0 else 0)
self.scroll_pos = perc
self.scroll_pos_changed.emit(*perc)
# Let superclass handle the event
super().paintEvent(e)
def mousePressEvent(self, e): def mousePressEvent(self, e):
"""Extend QWidget::mousePressEvent(). """Extend QWidget::mousePressEvent().