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Fixed remaining cursor navigation bugs (I think...?).

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This commit is contained in:
Nathan Vegdahl 2015-01-27 23:58:45 -08:00
parent bde11e6c7b
commit f222cd6a54
2 changed files with 21 additions and 17 deletions
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5
src/buffer/mod.rs
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@ -54,6 +54,11 @@ impl<T: LineFormatter> Buffer<T> {
}
pub fn dimensions(&self) -> (usize, usize) {
self.text.vis_dim
}
//------------------------------------------------------------------------
// Editing operations

31
src/editor/mod.rs
View File

@ -4,7 +4,7 @@ use buffer::Buffer;
use buffer::line_formatter::LineFormatter;
use buffer::line_formatter::RoundingBehavior::*;
use std::path::Path;
use std::cmp::min;
use std::cmp::{min, max};
use files::{load_file_to_buffer, save_buffer_to_file};
use string_utils::grapheme_count;
use self::cursor::CursorSet;
@ -471,10 +471,11 @@ impl<T: LineFormatter> Editor<T> {
pub fn cursor_up(&mut self, n: usize) {
for c in self.cursors.iter_mut() {
let vmove = n * self.buffer.formatter.single_line_height();
let (v, _) = self.buffer.index_to_v2d(c.range.0);
if v >= n {
c.range.0 = self.buffer.v2d_to_index((v - n, c.vis_start), (Floor, Floor));
if vmove <= v {
c.range.0 = self.buffer.v2d_to_index((v - vmove, c.vis_start), (Floor, Floor));
c.range.1 = c.range.0;
}
else {
@ -489,10 +490,12 @@ impl<T: LineFormatter> Editor<T> {
pub fn cursor_down(&mut self, n: usize) {
for c in self.cursors.iter_mut() {
let vmove = n * self.buffer.formatter.single_line_height();
let (v, _) = self.buffer.index_to_v2d(c.range.0);
let (h, _) = self.buffer.dimensions();
if v < (self.buffer.line_count() - n) {
c.range.0 = self.buffer.v2d_to_index((v + n, c.vis_start), (Floor, Floor));
if vmove < (h - v) {
c.range.0 = self.buffer.v2d_to_index((v + vmove, c.vis_start), (Floor, Floor));
c.range.1 = c.range.0;
}
else {
@ -507,20 +510,18 @@ impl<T: LineFormatter> Editor<T> {
}
pub fn page_up(&mut self) {
let move_amount = self.view_dim.0 - max((self.view_dim.0 / 8), self.buffer.formatter.single_line_height());
if self.view_pos.0 > 0 {
let move_amount = self.view_dim.0 - (self.view_dim.0 / 8);
if self.view_pos.0 >= move_amount {
self.view_pos.0 -= move_amount;
}
else {
self.view_pos.0 = 0;
}
}
self.cursor_up(move_amount);
}
else {
self.cursor_to_beginning_of_buffer();
}
self.cursor_up(move_amount);
// Adjust view
self.move_view_to_cursor();
@ -528,9 +529,9 @@ impl<T: LineFormatter> Editor<T> {
pub fn page_down(&mut self) {
let nlc = self.buffer.line_count() - 1;
let move_amount = self.view_dim.0 - max((self.view_dim.0 / 8), self.buffer.formatter.single_line_height());
if self.view_pos.0 < nlc {
let move_amount = self.view_dim.0 - (self.view_dim.0 / 8);
let max_move = nlc - self.view_pos.0;
if max_move >= move_amount {
@ -540,12 +541,10 @@ impl<T: LineFormatter> Editor<T> {
self.view_pos.0 += max_move;
}
self.cursor_down(move_amount);
}
else {
self.cursor_to_end_of_buffer();
}
self.cursor_down(move_amount);
// Adjust view
self.move_view_to_cursor();
}