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Add scrollbar showcase example (#798)
Signed-off-by: n4n5 <[email protected]> Co-authored-by: Josh McKinney <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| # A VHS tape. See https://github.com/charmbracelet/vhs | ||
| Output "../../../src/content/docs/showcase/widgets/scrollbar.gif" | ||
| Set Theme "Aardvark Blue" | ||
| Set Width 800 | ||
| Set Height 450 | ||
| Type "cargo run -- -w scrollbar" Enter | ||
| Sleep 2s | ||
| Screenshot "../../../src/content/docs/showcase/widgets/scrollbar.png" | ||
| Sleep 1s |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| use lipsum::lipsum; | ||
| use ratatui::{ | ||
| layout::{Margin, Rect}, | ||
| style::{Color, Stylize}, | ||
| text::Text, | ||
| widgets::{Block, Borders, Paragraph, Scrollbar, ScrollbarOrientation, ScrollbarState}, | ||
| Frame, | ||
| }; | ||
|
|
||
| pub fn render(frame: &mut Frame) { | ||
| let word_count = frame.area().width * frame.area().height / 3; | ||
| let text = lipsum(word_count as usize); | ||
|
|
||
| let Rect { | ||
| x, | ||
| y, | ||
| width, | ||
| height, | ||
| } = frame.area(); | ||
| let main_area = Rect::new(x, y, width - 4, height - 2); | ||
|
|
||
| // wrap (using textwrap) a bit wider than the frame to make sure we have a scrollbar | ||
| let wrapped = textwrap::wrap(&text, (width as f64 * 1.5) as usize); | ||
| let text = Text::from_iter(wrapped).dim(); | ||
|
|
||
| let block = Block::bordered().title("Scrollbar").borders(Borders::ALL); | ||
|
|
||
| let text_height = text.height(); | ||
| let text_width = text.width(); | ||
| let vertical_scroll = text_height as f64 / 3.0; | ||
| let horizontal_scroll = text_width as f64 / 3.0; | ||
|
|
||
| let para = Paragraph::new(text) | ||
| .block(block) | ||
| .scroll((vertical_scroll as u16, horizontal_scroll as u16)); | ||
| frame.render_widget(para, main_area); | ||
|
|
||
| let scrollbar = Scrollbar::new(ScrollbarOrientation::HorizontalBottom); | ||
| let mut scrollbar_state = ScrollbarState::new(text_width).position(horizontal_scroll as usize); | ||
| let area = main_area.inner(Margin::new(1, 0)); | ||
| frame.render_stateful_widget(scrollbar, area, &mut scrollbar_state); | ||
|
|
||
| let scrollbar = Scrollbar::new(ScrollbarOrientation::HorizontalBottom) | ||
| .thumb_symbol("▩") | ||
| .end_style(Color::Blue) | ||
| .begin_style(Color::Blue) | ||
| .thumb_style(Color::Yellow) | ||
| .track_style(Color::Green); | ||
| let mut scrollbar_state = ScrollbarState::new(text_width).position(0); | ||
| let area = Rect::new(x + 1, y, width - 6, height - 1); | ||
| frame.render_stateful_widget(scrollbar, area, &mut scrollbar_state); | ||
|
|
||
| let scrollbar = Scrollbar::new(ScrollbarOrientation::HorizontalBottom) | ||
| .thumb_symbol("▣") | ||
| .track_symbol(Some("-")) | ||
| .begin_symbol(Some("⭅")) | ||
| .end_symbol(Some("⭆")); | ||
| let mut scrollbar_state = ScrollbarState::new(text_width).position(text_width as usize); | ||
| let area = Rect::new(x + 1, y, width - 6, height); | ||
| frame.render_stateful_widget(scrollbar, area, &mut scrollbar_state); | ||
|
|
||
| let scrollbar = Scrollbar::new(ScrollbarOrientation::VerticalRight); | ||
| let mut scrollbar_state = ScrollbarState::new(text_height).position(vertical_scroll as usize); | ||
| let area = main_area.inner(Margin::new(0, 1)); | ||
| frame.render_stateful_widget(scrollbar, area, &mut scrollbar_state); | ||
|
|
||
| let scrollbar = Scrollbar::new(ScrollbarOrientation::VerticalRight) | ||
| .thumb_symbol("▯") | ||
| .end_style(Color::Red) | ||
| .begin_style(Color::Red) | ||
| .thumb_style(Color::Cyan) | ||
| .track_style(Color::Magenta); | ||
| let mut scrollbar_state = ScrollbarState::new(text_height).position(0); | ||
| let area = Rect::new(x, y + 1, width - 2, height-4); | ||
| frame.render_stateful_widget(scrollbar, area, &mut scrollbar_state); | ||
|
|
||
| let scrollbar = Scrollbar::new(ScrollbarOrientation::VerticalRight) | ||
| .thumb_symbol("▒") | ||
| .track_symbol(Some("|")) | ||
| .begin_symbol(Some("↑")) | ||
| .end_symbol(Some("↓")); | ||
| let mut scrollbar_state = ScrollbarState::new(text_height).position(text_height as usize); | ||
| let area = Rect::new(x, y + 1, width, height - 4); | ||
| frame.render_stateful_widget(scrollbar, area, &mut scrollbar_state); | ||
| } |
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