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Only render visible content in TextView
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@ -396,8 +396,13 @@ impl View for TextView {
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let content = self.content.content.lock().unwrap();
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let miny = printer.content_offset.y;
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let maxy = printer.output_size.y + printer.content_offset.y;
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printer.with_style(self.style, |printer| {
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for (y, row) in self.rows.iter().enumerate() {
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if y < miny || y >= maxy {
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continue;
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}
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let l = row.width;
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let mut x = self.align.h.get_offset(l, printer.size.x);
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