update legend callback function

iChunyu · Jun 23, 2024 · e4a8003 · e4a8003
1 parent f2b034e
commit e4a8003
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Showing 2 changed files with 22 additions and 0 deletions.
diff --git a/content/posts/matlab/legend-callback/index.md b/content/posts/matlab/legend-callback/index.md
@@ -153,7 +153,18 @@ function my_legend_callback(hSrc,eventData)
     % mid click to show only the selected object or show all
     if strcmp(eventData.SelectionType, 'extend') && strcmp(eventData.Region, 'icon')
         % get all graphic objects displayed in legend
+        % results may contain 'group' object create by 'bode', ignore their children
         go = findobj(eventData.Peer.Parent, '-property', 'DisplayName');
+        K = length(go);
+        idx = true(K,1);
+        for k = 1:K
+            if isprop(go(k), 'Children')
+                if isprop(go(k).Children, 'Visible')
+                    idx(go == go(k).Children) = false;
+                end
+            end
+        end
+        go = go(idx);
         go_visible = [go.Visible];
         if sum(go_visible) == 1 && isequal(go(go_visible), eventData.Peer)
             for k = 1:length(go)

diff --git a/content/posts/matlab/legend-callback/test_demo.m b/content/posts/matlab/legend-callback/test_demo.m
@@ -37,7 +37,18 @@ function my_legend_callback(hSrc,eventData)
     % mid click to show only the selected object or show all
     if strcmp(eventData.SelectionType, 'extend') && strcmp(eventData.Region, 'icon')
         % get all graphic objects displayed in legend
+        % results may contain 'group' object create by 'bode', ignore their children
         go = findobj(eventData.Peer.Parent, '-property', 'DisplayName');
+        K = length(go);
+        idx = true(K,1);
+        for k = 1:K
+            if isprop(go(k), 'Children')
+                if isprop(go(k).Children, 'Visible')
+                    idx(go == go(k).Children) = false;
+                end
+            end
+        end
+        go = go(idx);
         go_visible = [go.Visible];
         if sum(go_visible) == 1 && isequal(go(go_visible), eventData.Peer)
             for k = 1:length(go)