neovim-gtk/src/ui_model/model_layout.rs

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use ui_model::{UiModel, Attrs};
pub struct ModelLayout {
pub model: UiModel,
}
impl ModelLayout {
const COLUMNS_STEP: u64 = 50;
const ROWS_STEP: u64 = 10;
pub fn new() -> Self {
ModelLayout { model: UiModel::new(ModelLayout::ROWS_STEP, ModelLayout::COLUMNS_STEP) }
}
/// Wrap all lines into model
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///
/// returns actual width
pub fn layout(&mut self, lines: Vec<Vec<(Option<Attrs>, Vec<char>)>>, max_columns: u64) -> (u64, u64) {
if lines.len() > self.model.rows || max_columns as usize > self.model.columns {
let model_cols = ((max_columns / ModelLayout::COLUMNS_STEP) + 1) *
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ModelLayout::COLUMNS_STEP;
let model_rows = ((lines.len() as u64 / ModelLayout::ROWS_STEP) + 1) *
ModelLayout::ROWS_STEP;
self.model = UiModel::new(model_rows, model_cols);
}
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let mut max_col_idx = 0;
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let mut col_idx = 0;
let mut row_idx = 0;
for content in lines {
for (attr, ch_list) in content {
for ch in ch_list {
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if col_idx >= max_columns {
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col_idx = 0;
row_idx += 1;
}
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if max_col_idx < col_idx {
max_col_idx = col_idx;
}
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self.model.set_cursor(row_idx, col_idx as usize);
self.model.put(ch, false, attr.as_ref());
col_idx += 1;
}
}
row_idx += 1;
}
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(max_col_idx + 1, row_idx as u64)
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}
}