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fix: prompt position on resize (#578)
* fix: prompt position on resize * fix: u16 overflow * fix: prompt position when terminal grows in height * fix: exclude blank area from prompt height fix: resume the early return to exclude a case where the terminal got smaller but the prompt is still visible * fix: prevent any line overwriting at the cost of duplicate prompts * fix: prevent width change from eating previous output
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@ -405,22 +405,27 @@ impl Painter {
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let prev_prompt_row = self.prompt_start_row;
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self.terminal_size = (width, height);
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// TODO properly adjusting prompt_origin on resizing while lines > 1
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if prev_prompt_row >= (height - 1) {
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// Terminal is shrinking up
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// FIXME: use actual prompt size at some point
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// Note: you can't just subtract the offset from the origin,
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// as we could be shrinking so fast that the offset we read back from
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// crossterm is past where it would have been.
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self.prompt_start_row = height - 2;
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} else if prev_terminal_size.1 < height {
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// Terminal is growing down, so move the prompt down the same amount to make space
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// for history that's on the screen
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// Note: if the terminal doesn't have sufficient history, this will leave a trail
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// of previous prompts currently.
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self.prompt_start_row = prev_prompt_row + (height - prev_terminal_size.1);
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if prev_prompt_row < height
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&& height <= prev_terminal_size.1
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&& width == prev_terminal_size.0
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{
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// The terminal got smaller in height but the start of the prompt is still visible
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// The width didn't change
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return;
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}
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// Either:
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// - The terminal got larger in height
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// - Note: if the terminal doesn't have sufficient history, this will leave a trail
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// of previous prompts currently.
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// - Note: if the the prompt contains multiple lines, this will leave a trail of
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// previous prompts currently.
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// - The terminal got smaller in height and the whole prompt is no longer visible
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// - Note: if the the prompt contains multiple lines, this will leave a trail of
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// previous prompts currently.
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// - The width changed
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self.prompt_start_row = height.saturating_sub(1);
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}
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/// Writes `line` to the terminal with a following carriage return and newline
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