基础epub阅读功能

2026-06-27 11:20:27 +08:00
parent 02242089e8
commit 5acbc3a602
18 changed files with 980 additions and 330 deletions
--- a/lib/utils/reader/coordinates_to_part.dart
+++ b/lib/utils/reader/coordinates_to_part.dart
@@ -0,0 +1,12 @@
+/// 将归一化坐标 (0-1) 映射到 3x3 九宫格区域 (0-8)
+///
+/// ```
+/// 0  1  2
+/// 3  4  5
+/// 6  7  8
+/// ```
+int coordinatesToPart(double x, double y) {
+  final col = x < 0.33 ? 0 : (x < 0.66 ? 1 : 2);
+  final row = y < 0.33 ? 0 : (y < 0.66 ? 1 : 2);
+  return row * 3 + col;
+}