Calculate changed area for given event

This commit is contained in:
daa 2017-03-17 23:38:12 +03:00
parent ba4e8bc3aa
commit a92b42f784
2 changed files with 82 additions and 13 deletions

View File

@ -482,7 +482,7 @@ impl RedrawEvents for Shell {
}
fn on_scroll(&mut self, count: i64) {
self.model.scroll(count);
self.model.scroll(count as usize);
}
fn on_highlight_set(&mut self, attrs: &Vec<(Value, Value)>) {

View File

@ -120,21 +120,32 @@ impl UiModel {
&self.model
}
pub fn set_cursor(&mut self, row: u64, col: u64) {
pub fn set_cursor(&mut self, row: u64, col: u64) -> ModelRect {
let mut changed_region = ModelRect::point(self.cur_row, self.cur_col);
self.cur_row = row as usize;
self.cur_col = col as usize;
changed_region.join(&ModelRect::point(self.cur_row, self.cur_col));
changed_region
}
pub fn get_cursor(&self) -> (usize, usize) {
(self.cur_row, self.cur_col)
}
pub fn put(&mut self, text: &str, attrs: Option<&Attrs>) {
pub fn put(&mut self, text: &str, attrs: Option<&Attrs>) -> ModelRect {
let mut cell = &mut self.model[self.cur_row][self.cur_col];
let changed_region = ModelRect::point(self.cur_row, self.cur_col);
cell.ch = text.chars().last().unwrap_or(' ');
cell.attrs = attrs.map(Attrs::clone).unwrap_or_else(|| Attrs::new());
cell.attrs.double_width = text.len() == 0;
self.cur_col += 1;
changed_region
}
pub fn set_scroll_region(&mut self, top: u64, bot: u64, left: u64, right: u64) {
@ -144,42 +155,49 @@ impl UiModel {
self.right = right as usize;
}
fn copy_row(&mut self, row: usize, offset: i64, left: usize, right: usize) {
#[inline]
fn copy_row(&mut self, row: usize, offset: usize, left: usize, right: usize) {
for col in left..right + 1 {
let from_row = (row as i64 + offset) as usize;
let from_row = row + offset;
let from_cell = self.model[from_row][col].clone();
self.model[row][col] = from_cell;
}
}
pub fn scroll(&mut self, count: i64) {
let (top, bot, left, right) = (self.top as i64, self.bot as i64, self.left, self.right);
pub fn scroll(&mut self, count: usize) -> ModelRect {
let (top, bot, left, right) = (self.top, self.bot, self.left, self.right);
if count > 0 {
for row in top as usize..(bot - count + 1) as usize {
for row in top..(bot - count + 1) {
self.copy_row(row, count, left, right);
}
} else {
for row in ((top - count) as usize..(bot + 1) as usize).rev() {
for row in ((top - count)..(bot + 1)).rev() {
self.copy_row(row, count, left, right);
}
}
if count > 0 {
self.clear_region((bot - count + 1) as usize, bot as usize, left, right);
self.clear_region((bot - count + 1), bot, left, right);
} else {
self.clear_region(top as usize, (top - count - 1) as usize, left, right);
}
self.clear_region(top, (top - count - 1), left, right);
}
pub fn clear(&mut self) {
ModelRect::new(top, bot, left ,right)
}
pub fn clear(&mut self) -> ModelRect {
let (rows, columns) = (self.rows, self.columns);
self.clear_region(0, rows - 1, 0, columns - 1);
ModelRect::new(0, 0, rows -1, columns -1)
}
pub fn eol_clear(&mut self) {
pub fn eol_clear(&mut self) -> ModelRect {
let (cur_row, cur_col, columns) = (self.cur_row, self.cur_col, self.columns);
self.clear_region(cur_row, cur_row, cur_col, columns - 1);
ModelRect::new(cur_row, cur_col, cur_col, columns -1)
}
fn clear_region(&mut self, top: usize, bot: usize, left: usize, right: usize) {
@ -190,3 +208,54 @@ impl UiModel {
}
}
}
pub struct ModelRect {
top: usize,
bot: usize,
left: usize,
right: usize,
}
impl ModelRect {
pub fn new(top: usize, bot: usize, left: usize, right: usize) -> ModelRect {
ModelRect {
top: top,
bot: bot,
left: left,
right: right,
}
}
pub fn point(x: usize, y: usize) -> ModelRect {
ModelRect {
top: x,
bot: x,
left: y,
right: y,
}
}
pub fn join(&mut self, rect: &ModelRect) {
self.top = if self.top < rect.top {
self.top
} else {
rect.top
};
self.left = if self.left < rect.left {
self.left
} else {
rect.left
};
self.bot = if self.bot > rect.bot {
self.bot
} else {
rect.bot
};
self.right = if self.right > rect.right {
self.right
} else {
rect.right
};
}
}