增加全屏按钮

src/UI/Components/Panel.tsx

@@ -92,6 +92,18 @@ export class TopPanel extends React.Component<{ store?: TopPanelStore; }, {}>
                             this.setState({ isCollapse: !this.state.isCollapse });
                         }}
                     />
+                    <Button
+                        small={true}
+                        icon="fullscreen"
+                        text="全屏"
+                        onClick={() =>
+                        {
+                            if (document.fullscreenElement)
+                                document.exitFullscreen();
+                            else
+                                document.body.requestFullscreen();
+                        }}
+                    />
                     <Button
                         small={true}
                         icon="home"