fix old iframes in chrome

Author: AndreiKingsley

core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/explainer/SamplesRenderingUtils.kt

@@ -86,7 +86,10 @@ function getDirectVisibleContentHeight(element) {
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.byRow.html

@@ -565,7 +565,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.columnSelectors.html

@@ -665,7 +665,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.columnSelectorsMisc.html

@@ -813,7 +813,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.columnSelectorsModifySet.html

@@ -617,7 +617,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.columnSelectorsUsages.html

@@ -635,7 +635,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.columnsSelectorByIndices.html

@@ -553,7 +553,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.distinct.html

@@ -517,7 +517,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.distinctBy.html

@@ -543,7 +543,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {

docs/StardustDocs/resources/snippets/org.jetbrains.kotlinx.dataframe.samples.api.Access.distinctColumns.html

@@ -543,7 +543,10 @@
 function getElementHeight(el) {
     const styles = getComputedStyle(el);
     const margin = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    return el.offsetHeight + margin;
+    
+    // More reliable cross-browser calculation
+    const rect = el.getBoundingClientRect();
+    return rect.height + margin;
 }
 
 function isElementVisible(el) {