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Make syntax highlighting smoother

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This commit is contained in:
Syed Daanish
2025-12-30 10:56:31 +00:00
parent 26e0b06e24
commit dc507dfc23
13 changed files with 216 additions and 230 deletions
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src/editor/renderer.cc
+19 -9
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@@ -1,6 +1,7 @@
#include "editor/editor.h"
#include "editor/folds.h"
#include "main.h"
#include "ts/decl.h"
void render_editor(Editor *editor) {
uint32_t sel_start = 0, sel_end = 0;
@@ -73,14 +74,16 @@ void render_editor(Editor *editor) {
Coord cursor = {UINT32_MAX, UINT32_MAX};
uint32_t line_index = editor->scroll.row;
SpanCursor span_cursor(editor->spans);
SpanCursor def_span_cursor(editor->def_spans);
SpanCursor word_span_cursor(editor->word_spans);
SpanCursor hex_span_cursor(editor->hex_color_spans);
LineIterator *it = begin_l_iter(editor->root, line_index);
if (!it)
return;
uint32_t rendered_rows = 0;
uint32_t global_byte_offset = line_to_byte(editor->root, line_index, nullptr);
span_cursor.sync(global_byte_offset);
def_span_cursor.sync(global_byte_offset);
word_span_cursor.sync(global_byte_offset);
hex_span_cursor.sync(global_byte_offset);
while (rendered_rows < editor->size.row) {
const Fold *fold = fold_for_line(editor->folds, line_index);
if (fold) {
@@ -180,16 +183,23 @@ void render_editor(Editor *editor) {
uint32_t absolute_byte_pos =
global_byte_offset + current_byte_offset + local_render_offset;
Highlight *hl = span_cursor.get_highlight(absolute_byte_pos);
Highlight *def_hl = def_span_cursor.get_highlight(absolute_byte_pos);
Highlight *word_hl = word_span_cursor.get_highlight(absolute_byte_pos);
Highlight *hex_hl = hex_span_cursor.get_highlight(absolute_byte_pos);
uint32_t fg = hl ? hl->fg : 0xFFFFFF;
uint32_t bg = hl ? hl->bg : 0;
uint8_t fl = hl ? hl->flags : 0;
if (def_hl) {
if (def_hl->fg != 0)
fg = def_hl->fg;
if (def_hl->bg != 0)
bg = def_hl->bg;
fl |= def_hl->flags;
if (hex_hl) {
if (hex_hl->fg != 0)
fg = hex_hl->fg;
if (hex_hl->bg != 0)
bg = hex_hl->bg;
fl |= hex_hl->flags;
} else if (word_hl) {
if (word_hl->fg != 0)
fg |= word_hl->fg;
if (word_hl->bg != 0)
bg |= word_hl->bg;
fl |= word_hl->flags;
}
if (editor->selection_active && absolute_byte_pos >= sel_start &&
absolute_byte_pos < sel_end)