bendns' repos / helix
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'helix-view/src/ui/text.rs')
-rw-r--r--helix-view/src/ui/text.rs68
1 files changed, 68 insertions, 0 deletions
diff --git a/helix-view/src/ui/text.rs b/helix-view/src/ui/text.rs
new file mode 100644
index 00000000..52082080
--- /dev/null
+++ b/helix-view/src/ui/text.rs
@@ -0,0 +1,68 @@
+use crate::compositor::{self, Component, RenderContext};
+use crate::graphics::Rect;
+
+pub struct Text {
+ pub(crate) contents: tui::text::Text<'static>,
+ size: (u16, u16),
+ viewport: (u16, u16),
+}
+
+impl Text {
+ pub fn new(contents: String) -> Self {
+ Self {
+ contents: tui::text::Text::from(contents),
+ size: (0, 0),
+ viewport: (0, 0),
+ }
+ }
+}
+
+impl From<tui::text::Text<'static>> for Text {
+ fn from(contents: tui::text::Text<'static>) -> Self {
+ Self {
+ contents,
+ size: (0, 0),
+ viewport: (0, 0),
+ }
+ }
+}
+
+#[cfg(feature = "term")]
+impl compositor::term::Render for Text {
+ fn render(&mut self, area: Rect, cx: &mut RenderContext<'_>) {
+ use tui::widgets::{Paragraph, Widget, Wrap};
+
+ let par = Paragraph::new(self.contents.clone()).wrap(Wrap { trim: false });
+ // .scroll(x, y) offsets
+
+ par.render(area, cx.surface);
+ }
+}
+
+impl Component for Text {
+ fn required_size(&mut self, viewport: (u16, u16)) -> Option<(u16, u16)> {
+ if viewport != self.viewport {
+ let width = std::cmp::min(self.contents.width() as u16, viewport.0);
+ let height = std::cmp::min(self.contents.height() as u16, viewport.1);
+ self.size = (width, height);
+ self.viewport = viewport;
+ }
+ Some(self.size)
+ }
+}
+
+pub fn required_size(text: &tui::text::Text, max_text_width: u16) -> (u16, u16) {
+ let mut text_width = 0;
+ let mut height = 0;
+ for content in &text.lines {
+ height += 1;
+ let content_width = content.width() as u16;
+ if content_width > max_text_width {
+ text_width = max_text_width;
+ height += content_width / max_text_width;
+ } else if content_width > text_width {
+ text_width = content_width;
+ }
+ }
+ (text_width, height)
+}