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Add caching for tab sizes

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Jay Kamat 2017-10-14 17:49:27 -04:00
parent 01d2654c23
commit 08b562ea0c
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GPG Key ID: 5D2E399600F4F7B5
1 changed files with 11 additions and 4 deletions
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15
qutebrowser/mainwindow/tabwidget.py
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@ -424,7 +424,7 @@ class TabBar(QTabBar):
return
super().mousePressEvent(e)
def minimumTabSizeHint(self, index, ellipsis: bool = True):
def minimumTabSizeHint(self, index, ellipsis: bool = True) -> QSize:
"""Set the minimum tab size to indicator/icon/... text.
Args:
@ -434,11 +434,18 @@ class TabBar(QTabBar):
Return:
A QSize of the smallest tab size we can make.
"""
text = '\u2026' if ellipsis else self.tabText(index)
return self.__minimumTabSizeHintHelper(self.tabText(index),
self.tabIcon(index), ellipsis)
@functools.lru_cache(maxsize=100)
def __minimumTabSizeHintHelper(self, tab_text: str,
icon,
ellipsis: bool) -> QSize:
"""Helper function to cache tab results."""
text = '\u2026' if ellipsis else tab_text
# Don't ever shorten if text is shorter than the ellipsis
text_width = min(self.fontMetrics().width(text),
self.fontMetrics().width(self.tabText(index)))
icon = self.tabIcon(index)
self.fontMetrics().width(tab_text))
padding = config.val.tabs.padding
indicator_padding = config.val.tabs.indicator_padding
padding_h = padding.left + padding.right