[201_80] 定制化表格handles显示

devel/201_80.md

@@ -0,0 +1,15 @@
+# [201_80] 定制化表格handles显示
+
+## 如何测试
+1. 插入任意样式的表格（大表格、小表格除外），handles应该正确显示，且支持拖拽
+2. 插入`align`、`eqnarray`、`gather`、`multline`、`alignat`、`flalign`等数学环境，handles应该不显示，且不支持拖拽
+3. 手动修改样式TS文件（`样式`->`编辑样式`），插入 `<assign|table-handles|false>` 后保存
+4. 再次插入任意表格，handles应该始终不显示，且不支持拖拽
+
+## 2026/2/9
+### What
+在align环境等数学环境下的所有表格结构的组件，在编辑时，handles都应该不显示，也不应支持拖拽
+
+### How
+1. 在 `vars.hpp`、 `vars.cpp` 和 `env_default.cpp` 中添加 `TABLE_HANDLES` 环境变量，默认值为 `"true"`，表示表格handles默认显示
+2. 在 `edit_repaint.cpp` 中的 `repaint_table_handles` 函数中添加判断，如果当前表格所在环境不是“真表格”（通过 `is_true_table` 判断），则不显示handles；如果 `TABLE_HANDLES` 环境变量值为 `"false"`，则始终不显示handles

moebius/moebius/drd/drd_std.cpp

@@ -1352,6 +1352,7 @@ init_std_drd () {
   init_var (TABLE_MIN_COLS, TYPE_INTEGER);
   init_var (TABLE_MAX_ROWS, TYPE_INTEGER);
   init_var (TABLE_MAX_COLS, TYPE_INTEGER);
+  init_var (TABLE_HANDLES, TYPE_STRING);
 
   init_var (CELL_FORMAT, TYPE_ADHOC);
   init_var (CELL_DECORATION, TYPE_ADHOC);

moebius/moebius/vars.cpp

@@ -233,6 +233,7 @@ string TABLE_MIN_ROWS ("table-min-rows");
 string TABLE_MIN_COLS ("table-min-cols");
 string TABLE_MAX_ROWS ("table-max-rows");
 string TABLE_MAX_COLS ("table-max-cols");
+string TABLE_HANDLES ("table-handles");
 
 /******************************************************************************
  * Environment variables for cells of tables

moebius/moebius/vars.hpp

@@ -216,6 +216,7 @@ extern string TABLE_MIN_ROWS;
 extern string TABLE_MIN_COLS;
 extern string TABLE_MAX_ROWS;
 extern string TABLE_MAX_COLS;
+extern string TABLE_HANDLES;
 
 extern string CELL_FORMAT;
 extern string CELL_DECORATION;

src/Edit/Interface/edit_interface.cpp

@@ -1184,6 +1184,21 @@ edit_interface_rep::is_embedded_widget () {
   // FIXME: could be made more robust: test should not be based on file name
 }
 
+bool
+edit_interface_rep::is_true_table (path p) {
+  for (path q= p; !is_nil (q) && q != rp; q= path_up (q)) {
+    tree qt= subtree (et, q);
+    if (is_compound (qt, "align") || is_compound (qt, "align*") ||
+        is_compound (qt, "eqnarray") || is_compound (qt, "eqnarray*") ||
+        is_compound (qt, "gather") || is_compound (qt, "gather*") ||
+        is_compound (qt, "multline") || is_compound (qt, "multline*") ||
+        is_compound (qt, "alignat") || is_compound (qt, "alignat*") ||
+        is_compound (qt, "flalign") || is_compound (qt, "flalign*"))
+      return false;
+  }
+  return true;
+}
+
 void
 edit_interface_rep::handle_get_size_hint (SI& w, SI& h) {
   gui_root_extents (w, h);

src/Edit/Interface/edit_interface.hpp

@@ -278,6 +278,7 @@ class edit_interface_rep : virtual public editor_rep {
   /* event handlers */
   bool is_editor_widget ();
   bool is_embedded_widget ();
+  bool is_true_table (path p);
   void handle_get_size_hint (SI& w, SI& h);
   void handle_notify_resize (SI w, SI h);
   void handle_keypress (string key, time_t t);

src/Edit/Interface/edit_repaint.cpp

@@ -250,6 +250,13 @@ edit_interface_rep::draw_image_resize_handles (renderer ren) {
 
 void
 edit_interface_rep::draw_table_resize_handles (renderer ren) {
+  if (as_string (get_env_value (TABLE_HANDLES)) == "false") {
+    if (!is_zero (last_table_brec)) invalidate (last_table_brec);
+    last_table_brec= rectangle (0, 0, 0, 0);
+    last_table_hr  = 0;
+    return;
+  }
+
   // 鼠标位于表格中时，绘制 handles
   SI        hs            = 8 * ren->pixel; // handles 半径（正方形半边长）
   rectangle new_table_brec= rectangle (0, 0, 0, 0);
@@ -260,6 +267,7 @@ edit_interface_rep::draw_table_resize_handles (renderer ren) {
   for (path p= path_up (tp); !is_nil (p) && p != rp; p= path_up (p)) {
     tree st= subtree (et, p);
     if (!is_func (st, TABLE)) continue;
+    if (!is_true_table (p)) break;
 
     selection sel= eb->find_check_selection (p * 0, p * 1);
     if (!sel->valid || is_nil (sel->rs)) break;

src/Typeset/Env/env_default.cpp

@@ -234,6 +234,7 @@ initialize_default_env () {
   env (TABLE_MIN_COLS)  = "";     // suggested minimal number of columns
   env (TABLE_MAX_ROWS)  = "";     // suggested maximal number of rows
   env (TABLE_MAX_COLS)  = "";     // suggested maximal number of columns
+  env (TABLE_HANDLES)   = "true"; // show table resize handles
 
   env (CELL_DECORATION) = "";             // decorating table of cell
   env (CELL_FORMAT)     = tree (TFORMAT); // format of cell