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https://github.com/ratatui-org/ratatui
synced 2024-11-10 07:04:17 +00:00
feat: impl Widget for &BarChart (#897)
BarChart had some internal mutations that needed to be removed to implement the Widget trait for &BarChart to bring it in line with the other widgets.
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parent
4278b4088d
commit
2a12f7bddf
3 changed files with 53 additions and 45 deletions
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@ -313,7 +313,7 @@ struct LabelInfo {
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height: u16,
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}
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impl<'a> BarChart<'a> {
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impl BarChart<'_> {
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/// Returns the visible bars length in ticks. A cell contains 8 ticks.
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/// `available_space` used to calculate how many bars can fit in the space
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/// `bar_max_length` is the maximal length a bar can take.
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@ -392,7 +392,7 @@ impl<'a> BarChart<'a> {
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}
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}
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fn render_horizontal(self, buf: &mut Buffer, area: Rect) {
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fn render_horizontal(&self, buf: &mut Buffer, area: Rect) {
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// get the longest label
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let label_size = self
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.data
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@ -417,10 +417,8 @@ impl<'a> BarChart<'a> {
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// print all visible bars, label and values
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let mut bar_y = bars_area.top();
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for (ticks_vec, mut group) in group_ticks.into_iter().zip(self.data) {
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let bars = std::mem::take(&mut group.bars);
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for (ticks, bar) in ticks_vec.into_iter().zip(bars) {
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for (ticks_vec, group) in group_ticks.into_iter().zip(self.data.iter()) {
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for (ticks, bar) in ticks_vec.into_iter().zip(group.bars.iter()) {
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let bar_length = (ticks / 8) as u16;
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let bar_style = self.bar_style.patch(bar.style);
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@ -473,7 +471,7 @@ impl<'a> BarChart<'a> {
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}
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}
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fn render_vertical(self, buf: &mut Buffer, area: Rect) {
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fn render_vertical(&self, buf: &mut Buffer, area: Rect) {
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let label_info = self.label_info(area.height - 1);
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let bars_area = Rect {
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@ -535,7 +533,7 @@ impl<'a> BarChart<'a> {
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}
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fn render_labels_and_values(
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self,
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&self,
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area: Rect,
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buf: &mut Buffer,
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label_info: LabelInfo,
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@ -544,12 +542,10 @@ impl<'a> BarChart<'a> {
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// print labels and values in one go
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let mut bar_x = area.left();
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let bar_y = area.bottom() - label_info.height - 1;
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for (mut group, ticks_vec) in self.data.into_iter().zip(group_ticks) {
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for (group, ticks_vec) in self.data.iter().zip(group_ticks) {
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if group.bars.is_empty() {
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continue;
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}
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let bars = std::mem::take(&mut group.bars);
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// print group labels under the bars or the previous labels
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if label_info.group_label_visible {
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let label_max_width =
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@ -564,7 +560,7 @@ impl<'a> BarChart<'a> {
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}
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// print the bar values and numbers
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for (mut bar, ticks) in bars.into_iter().zip(ticks_vec) {
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for (bar, ticks) in group.bars.iter().zip(ticks_vec) {
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if label_info.bar_label_visible {
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bar.render_label(buf, self.bar_width, bar_x, bar_y + 1, self.label_style);
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}
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@ -579,6 +575,12 @@ impl<'a> BarChart<'a> {
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}
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impl Widget for BarChart<'_> {
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fn render(self, area: Rect, buf: &mut Buffer) {
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(&self).render(area, buf);
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}
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}
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impl Widget for &BarChart<'_> {
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fn render(self, area: Rect, buf: &mut Buffer) {
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buf.set_style(area, self.style);
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@ -147,7 +147,7 @@ impl<'a> Bar<'a> {
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}
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pub(super) fn render_value(
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self,
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&self,
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buf: &mut Buffer,
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max_width: u16,
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x: u16,
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@ -156,12 +156,8 @@ impl<'a> Bar<'a> {
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ticks: u64,
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) {
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if self.value != 0 {
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let value_label = if let Some(text) = self.text_value {
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text
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} else {
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self.value.to_string()
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};
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let value = self.value.to_string();
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let value_label = self.text_value.as_ref().unwrap_or(&value);
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let width = value_label.width() as u16;
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const TICKS_PER_LINE: u64 = 8;
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// if we have enough space or the ticks are greater equal than 1 cell (8)
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@ -178,25 +174,29 @@ impl<'a> Bar<'a> {
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}
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pub(super) fn render_label(
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&mut self,
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&self,
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buf: &mut Buffer,
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max_width: u16,
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x: u16,
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y: u16,
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default_label_style: Style,
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) {
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if let Some(label) = &mut self.label {
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// patch label styles
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for span in &mut label.spans {
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span.style = default_label_style.patch(span.style);
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}
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buf.set_line(
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x + (max_width.saturating_sub(label.width() as u16) >> 1),
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y,
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label,
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max_width,
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);
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// center the label. Necessary to do it this way as we don't want to set the style
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// of the whole area, just the label area
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let width = self
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.label
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.as_ref()
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.map_or(0, Line::width)
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.min(max_width as usize) as u16;
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let area = Rect {
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x: x + (max_width.saturating_sub(width)) / 2,
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y,
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width,
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height: 1,
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};
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buf.set_style(area, default_label_style);
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if let Some(label) = &self.label {
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label.render(area, buf);
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}
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}
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}
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@ -40,20 +40,26 @@ impl<'a> BarGroup<'a> {
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self.bars.iter().max_by_key(|v| v.value).map(|v| v.value)
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}
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pub(super) fn render_label(self, buf: &mut Buffer, area: Rect, default_label_style: Style) {
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if let Some(mut label) = self.label {
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// patch label styles
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for span in &mut label.spans {
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span.style = default_label_style.patch(span.style);
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}
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let x_offset = match label.alignment {
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Some(Alignment::Center) => area.width.saturating_sub(label.width() as u16) >> 1,
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Some(Alignment::Right) => area.width.saturating_sub(label.width() as u16),
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_ => 0,
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pub(super) fn render_label(&self, buf: &mut Buffer, area: Rect, default_label_style: Style) {
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if let Some(label) = &self.label {
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// align the label. Necessary to do it this way as we don't want to set the style
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// of the whole area, just the label area
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let width = label.width() as u16;
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let area = match label.alignment {
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Some(Alignment::Center) => Rect {
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x: area.x + (area.width.saturating_sub(width)) / 2,
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width,
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..area
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},
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Some(Alignment::Right) => Rect {
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x: area.x + area.width.saturating_sub(width),
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width,
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..area
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},
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_ => Rect { width, ..area },
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};
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buf.set_line(area.x + x_offset, area.y, &label, area.width);
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buf.set_style(area, default_label_style);
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label.render(area, buf);
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}
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}
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}
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