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gui/log: work around Qt scrolling bug. Closes #151
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@ -199,22 +199,37 @@ class LogDock(dockarea.Dock):
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def rows_inserted_before(self):
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scrollbar = self.log.verticalScrollBar()
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self.scroll_at_bottom = scrollbar.value() == scrollbar.maximum()
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self.scroll_value = scrollbar.value()
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self.scroll_at_bottom = self.scroll_value == scrollbar.maximum()
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def rows_inserted_after(self):
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if self.scroll_at_bottom:
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self.log.scrollToBottom()
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# HACK:
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# Qt intermittently likes to scroll back to the top when rows are removed.
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# Work around this by restoring the scrollbar to the previously memorized
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# position, after the removal.
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# Note that this works because _LogModel always does the insertion right
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# before the removal.
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def rows_removed(self):
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if self.scroll_at_bottom:
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self.log.scrollToBottom()
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else:
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scrollbar = self.log.verticalScrollBar()
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scrollbar.setValue(self.scroll_value)
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def init_log_model(self, init):
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table_model = _LogModel(self.log, init)
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self.table_model = _LogModel(self.log, init)
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self.table_model_filter = _LogFilterProxyModel(
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getattr(logging, self.filter_level.currentText()),
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self.filter_freetext.text())
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self.table_model_filter.setSourceModel(table_model)
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self.table_model_filter.setSourceModel(self.table_model)
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self.log.setModel(self.table_model_filter)
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self.table_model_filter.rowsAboutToBeInserted.connect(self.rows_inserted_before)
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self.table_model_filter.rowsInserted.connect(self.rows_inserted_after)
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return table_model
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self.table_model_filter.rowsRemoved.connect(self.rows_removed)
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return self.table_model
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def save_state(self):
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return {"min_level_idx": self.filter_level.currentIndex()}
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