Rearrange code and cleanup

2025-12-30 01:19:50 +00:00
parent 04179d1a4e
commit 235eafb01c
51 changed files with 2608 additions and 2646 deletions
--- a/src/editor/click.cc
+++ b/src/editor/click.cc
@@ -0,0 +1,97 @@
+#include "editor/editor.h"
+#include "editor/folds.h"
+#include "main.h"
+
+Coord editor_hit_test(Editor *editor, uint32_t x, uint32_t y) {
+  if (mode == INSERT)
+    x++;
+  uint32_t numlen =
+      EXTRA_META + static_cast<int>(std::log10(editor->root->line_count + 1));
+  bool is_gutter_click = (x < numlen);
+  uint32_t render_width = editor->size.col - numlen;
+  x = MAX(x, numlen) - numlen;
+  uint32_t target_visual_row = y;
+  uint32_t visual_row = 0;
+  uint32_t line_index = editor->scroll.row;
+  uint32_t last_line_index = editor->scroll.row;
+  uint32_t last_col = editor->scroll.col;
+  bool first_visual_line = true;
+  std::shared_lock knot_lock(editor->knot_mtx);
+  LineIterator *it = begin_l_iter(editor->root, line_index);
+  if (!it)
+    return editor->scroll;
+  while (visual_row <= target_visual_row) {
+    const Fold *fold = fold_for_line(editor->folds, line_index);
+    if (fold) {
+      if (visual_row == target_visual_row) {
+        free(it->buffer);
+        free(it);
+        if (is_gutter_click) {
+          remove_fold(editor, fold->start);
+          return {UINT32_MAX, UINT32_MAX};
+        }
+        return {fold->start > 0 ? fold->start - 1 : 0, 0};
+      }
+      visual_row++;
+      while (line_index <= fold->end) {
+        char *l = next_line(it, nullptr);
+        if (!l)
+          break;
+        line_index++;
+      }
+      last_line_index = fold->end;
+      last_col = 0;
+      continue;
+    }
+    uint32_t line_len;
+    char *line = next_line(it, &line_len);
+    if (!line)
+      break;
+    if (line_len && line[line_len - 1] == '\n')
+      line_len--;
+    last_line_index = line_index;
+    last_col = line_len;
+    uint32_t offset = first_visual_line ? editor->scroll.col : 0;
+    first_visual_line = false;
+    while (offset < line_len || (line_len == 0 && offset == 0)) {
+      uint32_t col = 0;
+      uint32_t advance = 0;
+      uint32_t left = line_len - offset;
+      uint32_t last_good_offset = offset;
+      while (left > 0 && col < render_width) {
+        uint32_t g =
+            grapheme_next_character_break_utf8(line + offset + advance, left);
+        int w = display_width(line + offset + advance, g);
+        if (col + w > render_width)
+          break;
+        if (visual_row == target_visual_row && x < col + w) {
+          free(it->buffer);
+          free(it);
+          return {line_index, offset + advance};
+        }
+        advance += g;
+        last_good_offset = offset + advance;
+        left -= g;
+        col += w;
+      }
+      last_col = last_good_offset;
+      if (visual_row == target_visual_row) {
+        free(it->buffer);
+        free(it);
+        return {line_index, last_good_offset};
+      }
+      visual_row++;
+      if (visual_row > target_visual_row)
+        break;
+      if (advance == 0)
+        break;
+      offset += advance;
+      if (line_len == 0)
+        break;
+    }
+    line_index++;
+  }
+  free(it->buffer);
+  free(it);
+  return {last_line_index, last_col};
+}