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webelem: Avoid unnecessary ::geometry calls

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This commit is contained in:
Florian Bruhin 2014-09-19 17:39:37 +02:00
parent 658053842e
commit 84cdb30bcb
1 changed files with 16 additions and 11 deletions
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27
qutebrowser/browser/webelem.py
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@ -336,7 +336,7 @@ def focus_elem(frame):
return WebElementWrapper(elem)
def rect_on_view(elem):
def rect_on_view(elem, elem_geometry=None):
"""Get the geometry of the element relative to the webview.
We need this as a standalone function (as opposed to a WebElementWrapper
@ -345,11 +345,16 @@ def rect_on_view(elem):
Args:
elem: The QWebElement to get the rect for.
elem_geometry: The geometry of the element, or None.
Calling QWebElement::geometry is rather expensive so we
want to avoid doing it twice.
"""
if elem.isNull():
raise IsNullError("Got called on a null element!")
if elem_geometry is None:
elem_geometry = elem.geometry()
frame = elem.webFrame()
rect = QRect(elem.geometry())
rect = QRect(elem_geometry)
while frame is not None:
rect.translate(frame.geometry().topLeft())
rect.translate(frame.scrollPosition() * -1)
@ -378,35 +383,35 @@ def is_visible(elem, mainframe):
for k, v in hidden_attributes.items():
if elem.styleProperty(k, QWebElement.ComputedStyle) == v:
return False
geometry = elem.geometry()
if not geometry.isValid() and geometry.x() == 0:
elem_geometry = elem.geometry()
if not elem_geometry.isValid() and elem_geometry.x() == 0:
# Most likely an invisible link
return False
# First check if the element is visible on screen
elem_rect = rect_on_view(elem)
elem_rect = rect_on_view(elem, elem_geometry=elem_geometry)
mainframe_geometry = mainframe.geometry()
if elem_rect.isValid():
visible_on_screen = mainframe.geometry().intersects(elem_rect)
visible_on_screen = mainframe_geometry.intersects(elem_rect)
else:
# We got an invalid rectangle (width/height 0/0 probably), but this
# can still be a valid link.
visible_on_screen = mainframe.geometry().contains(
visible_on_screen = mainframe_geometry.contains(
elem_rect.topLeft())
# Then check if it's visible in its frame if it's not in the main
# frame.
elem_frame = elem.webFrame()
elem_rect = elem.geometry()
framegeom = QRect(elem_frame.geometry())
if not framegeom.isValid():
visible_in_frame = False
elif elem_frame.parentFrame() is not None:
framegeom.moveTo(0, 0)
framegeom.translate(elem_frame.scrollPosition())
if elem_rect.isValid():
visible_in_frame = framegeom.intersects(elem_rect)
if elem_geometry.isValid():
visible_in_frame = framegeom.intersects(elem_geometry)
else:
# We got an invalid rectangle (width/height 0/0 probably), but
# this can still be a valid link.
visible_in_frame = framegeom.contains(elem_rect.topLeft())
visible_in_frame = framegeom.contains(elem_geometry.topLeft())
else:
visible_in_frame = visible_on_screen
return all([visible_on_screen, visible_in_frame])