cessen/led
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

First attempt at making display code really take advantage of long line support.

Browse Source 
It's not quite working right, but it does at least prevent performance
degradation.
This commit is contained in:
Nathan Vegdahl 2015-02-16 22:29:41 -08:00
parent 86f3ada8ea
commit 311f8aca67
2 changed files with 24 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/formatter.rs
View File

@ -152,6 +152,6 @@ pub trait LineFormatter {
}
fn block_index_and_offset(index: usize) -> (usize, usize) {
pub fn block_index_and_offset(index: usize) -> (usize, usize) {
(index / LINE_BLOCK_LENGTH, index % LINE_BLOCK_LENGTH)
}

34
src/term_ui/mod.rs
View File

@ -3,7 +3,7 @@
use rustbox;
use rustbox::Color;
use editor::Editor;
use formatter::{LineFormatter, LINE_BLOCK_LENGTH};
use formatter::{LineFormatter, LINE_BLOCK_LENGTH, block_index_and_offset};
use std::char;
use std::time::duration::Duration;
use string_utils::{is_line_ending};
@ -357,9 +357,10 @@ impl TermUI {
fn draw_editor_text(&self, editor: &Editor<ConsoleLineFormatter>, c1: (usize, usize), c2: (usize, usize)) {
// Calculate all the starting info
let gutter_width = editor.editor_dim.1 - editor.view_dim.1;
let (starting_line, _) = editor.buffer.index_to_line_col(editor.view_pos.0);
let mut grapheme_index = editor.buffer.line_col_to_index((starting_line, 0));
let (vis_line_offset, _) = editor.formatter.index_to_v2d(editor.buffer.get_line(starting_line).grapheme_iter(), editor.view_pos.0 - grapheme_index);
let (line_index, col_i) = editor.buffer.index_to_line_col(editor.view_pos.0);
let (mut block_index, _) = block_index_and_offset(col_i);
let mut grapheme_index = editor.buffer.line_col_to_index((line_index, block_index * LINE_BLOCK_LENGTH));
let (vis_line_offset, _) = editor.formatter.index_to_v2d(editor.buffer.get_line(line_index).grapheme_iter_at_index_with_max_length(block_index*LINE_BLOCK_LENGTH, LINE_BLOCK_LENGTH), editor.view_pos.0 - grapheme_index);
let mut screen_line = c1.0 as isize - vis_line_offset as isize;
let screen_col = c1.1 as isize + gutter_width as isize;
@ -371,13 +372,15 @@ impl TermUI {
}
}
let mut line_num = starting_line + 1;
for line in editor.buffer.line_iter_at_index(starting_line) {
let mut line_num = line_index + 1;
for line in editor.buffer.line_iter_at_index(line_index) {
// Print line number
let lnx = c1.1 + (gutter_width - 1 - digit_count(line_num as u32, 10) as usize);
let lny = screen_line as usize;
if lny >= c1.0 && lny <= c2.0 {
self.rb.print(lnx, lny, rustbox::RB_NORMAL, Color::White, Color::Blue, format!("{}", line_num).as_slice());
if block_index == 0 {
let lnx = c1.1 + (gutter_width - 1 - digit_count(line_num as u32, 10) as usize);
let lny = screen_line as usize;
if lny >= c1.0 && lny <= c2.0 {
self.rb.print(lnx, lny, rustbox::RB_NORMAL, Color::White, Color::Blue, format!("{}", line_num).as_slice());
}
}
// Loop through the graphemes of the line and print them to
@ -386,7 +389,16 @@ impl TermUI {
let mut line_block_index: usize = 0;
let mut last_pos_y = 0;
let mut lines_traversed: usize = 0;
let mut g_iter = editor.formatter.iter(line.grapheme_iter());
let mut g_iter = if block_index == 0 {
editor.formatter.iter(line.grapheme_iter())
}
else {
let iter = editor.formatter.iter(line.grapheme_iter_at_index(block_index*LINE_BLOCK_LENGTH));
block_index = 0;
iter
};
loop {
if let Some((g, (pos_y, pos_x), width)) = g_iter.next() {
if last_pos_y != pos_y {