When DomRenderer blue,perform rendering.

demo/client.ts

@@ -119,6 +119,8 @@ const actionElements = {
   findResults: document.querySelector('#find-results')
 };
 const paddingElement = document.getElementById('padding') as HTMLInputElement;
+const selectionBackgroundElement = document.getElementById('selectionBackground') as HTMLInputElement;
+const selectionInactiveBackgroundElement = document.getElementById('selectionInactiveBackground') as HTMLInputElement;
 
 const xtermjsTheme = {
   foreground: '#F8F8F8',
@@ -146,6 +148,18 @@ function setPadding(): void {
   addons.fit.instance.fit();
 }
 
+function setSelectionInactiveBackground(): void {
+  const theme = { ...term.options.theme };
+  theme.selectionInactiveBackground = selectionInactiveBackgroundElement.value;
+  term.options.theme = theme;
+}
+
+function setSelectionBackground(): void {
+  const theme = { ...term.options.theme };
+  theme.selectionBackground = selectionBackgroundElement.value;
+  term.options.theme = theme;
+}
+
 function getSearchOptions(): ISearchOptions {
   return {
     regex: (document.getElementById('regex') as HTMLInputElement).checked,
@@ -333,6 +347,8 @@ function createTerminal(): void {
   resizeObserver.observe(terminalContainer);
 
   addDomListener(paddingElement, 'change', setPadding);
+  addDomListener(selectionInactiveBackgroundElement, 'change', setSelectionInactiveBackground);
+  addDomListener(selectionBackgroundElement, 'change', setSelectionBackground);
 
   addDomListener(actionElements.findNext, 'keydown', (e) => {
     if (e.key === 'Enter') {

demo/index.html

@@ -75,6 +75,14 @@
             <label for="padding">Padding</label>
             <input type="number" id="padding" />
           </div>
+          <div style="display: inline-block; margin-right: 16px;">
+            <label for="selectionBackground">selectionBackground</label>
+            <input type="text" id="selectionBackground" />
+          </div>
+          <div style="display: inline-block; margin-right: 16px;">
+            <label for="selectionInactiveBackground">SelectionInactiveBackground</label>
+            <input type="text" id="selectionInactiveBackground" />
+          </div>
         </div>
         <div id="test" class="tabContent">
           <h3>Test</h3>

src/browser/renderer/dom/DomRenderer.ts

@@ -299,6 +299,7 @@ export class DomRenderer extends Disposable implements IRenderer {
 
   public handleBlur(): void {
     this._rowContainer.classList.remove(FOCUS_CLASS);
+    this.renderRows(0, this._bufferService.rows - 1);
   }
 
   public handleFocus(): void {