hasufell/neovim-gtk
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Render fixes

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This commit is contained in:
daa 2017-08-27 22:29:43 +03:00
parent 8aeac2b819
commit e8161919a7
2 changed files with 41 additions and 49 deletions
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33
src/render/mod.rs
View File

@ -21,14 +21,16 @@ pub fn render(
let mut line_y = line_height;
for line in ui_model.model_mut() {
ctx.move_to(0.0, line_y);
let mut line_x = 0.0;
for i in 0..line.line.len() {
ctx.move_to(line_x, line_y);
let item = line.item_line[i].as_ref();
if let Some(item) = item {
if let Some(ref glyphs) = item.glyphs {
ctx.show_glyph_string(item.font(), glyphs);
}
}
line_x += char_width;
}
line_y += line_height;
}
@ -43,21 +45,22 @@ fn shape_dirty(ctx: &context::Context, ui_model: &mut ui_model::UiModel) {
for i in 0..line.line.len() {
if line[i].dirty {
let mut item = line.get_item_mut(i).unwrap();
let mut glyphs = pango::GlyphString::new();
{
let analysis = item.analysis();
let (offset, length, _) = item.item.offset();
pango_shape(
&styled_line.line_str,
offset,
length,
&analysis,
&mut glyphs,
);
}
if let Some(mut item) = line.get_item_mut(i) {
let mut glyphs = pango::GlyphString::new();
{
let analysis = item.analysis();
let (offset, length, _) = item.item.offset();
pango_shape(
&styled_line.line_str,
offset,
length,
&analysis,
&mut glyphs,
);
}
item.set_glyphs(glyphs);
item.set_glyphs(glyphs);
}
}
line[i].dirty = false;

57
src/ui_model/line.rs
View File

@ -1,3 +1,4 @@
use std;
use std::ops::{Index, IndexMut};
use super::cell::Cell;
@ -51,6 +52,7 @@ pub struct Line {
// [Item1, Item2, None, None, Item3]
// Item2 take 3 cells and renders as one
pub item_line: Box<[Option<Item>]>,
cell_to_item: Box<[i32]>,
item_line_empty: bool,
pub dirty_line: bool,
@ -70,6 +72,7 @@ impl Line {
Line {
line: line.into_boxed_slice(),
item_line: item_line.into_boxed_slice(),
cell_to_item: vec![-1; columns].into_boxed_slice(),
dirty_line: false,
item_line_empty: true,
}
@ -83,12 +86,13 @@ impl Line {
pub fn merge(&mut self, old_items: &StyledLine, new_items: &[sys_pango::Item]) {
for new_item in new_items {
//FIXME: clear empty cells
let (offset, length, _) = new_item.offset();
let start_cell = old_items.cell_to_byte[offset];
let end_cell = old_items.cell_to_byte[offset + length - 1];
// first time initialization
// as cell_to_item is to slow in this case
// as cell_to_item points to wrong values
if !self.item_line_empty {
let start_item = self.cell_to_item(start_cell);
let end_item = self.cell_to_item(end_cell);
@ -98,7 +102,7 @@ impl Line {
if start_item != end_item {
self.initialize_cell_item(start_cell, end_cell, new_item);
} else {
self.item_line[offset].as_mut().unwrap().update(
self.item_line[start_cell].as_mut().unwrap().update(
new_item.clone(),
);
}
@ -110,9 +114,15 @@ impl Line {
self.item_line_empty = false;
}
fn initialize_cell_item(&mut self, start_cell: usize, end_cell: usize, new_item: &sys_pango::Item) {
for i in start_cell..end_cell {
fn initialize_cell_item(
&mut self,
start_cell: usize,
end_cell: usize,
new_item: &sys_pango::Item,
) {
for i in start_cell..end_cell + 1 {
self.line[i].dirty = true;
self.cell_to_item[i] = start_cell as i32;
}
for i in start_cell + 1..end_cell {
self.item_line[i] = None;
@ -125,17 +135,16 @@ impl Line {
}
pub fn get_item_mut(&mut self, cell_idx: usize) -> Option<&mut Item> {
self.item_line[ self.cell_to_item(cell_idx) ].as_mut()
let item_idx = self.cell_to_item(cell_idx);
if item_idx >= 0 {
self.item_line[item_idx as usize].as_mut()
} else {
None
}
}
fn cell_to_item(&self, cell_idx: usize) -> usize {
for i in (0..cell_idx + 1).rev() {
if self.item_line[i].is_some() {
return i;
}
}
unreachable!();
fn cell_to_item(&self, cell_idx: usize) -> i32 {
self.cell_to_item[cell_idx]
}
}
@ -167,7 +176,7 @@ impl StyledLine {
let mut byte_offset = 0;
for (cell_idx, cell) in line.line.iter().enumerate() {
if cell.attrs.double_width {
if cell.attrs.double_width || cell.ch.is_whitespace() {
continue;
}
@ -229,24 +238,4 @@ mod tests {
assert_eq!(1, styled_line.cell_to_byte[1]);
assert_eq!(2, styled_line.cell_to_byte[2]);
}
#[test]
fn test_line_merge() {
let mut line = Line::new(2);
line[0].ch = 'a';
line[1].ch = 'b';
let styled_line = StyledLine::from(&line);
let mut item1 = sys_pango::Item::new();
item1.set_offset(0, 1, 1);
let mut item2 = sys_pango::Item::new();
item2.set_offset(1, 1, 1);
let new_items = [item1, item2];
line.merge(&styled_line, &new_items);
assert_eq!(2, line.item_line.len());
assert!(line.item_line[0].is_some());
assert!(line.item_line[1].is_some());
}
}