如何更改WebView的默认光标？我所做的每一个更改都会被忽略，该图标始终会恢复为默认指针。
示例：
import javafx.application.Application;
import javafx.scene.Cursor;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(String[] args) {
launch(args);
}
public void start(Stage primaryStage) {
primaryStage.setTitle("JavaFX WebView Example");
WebView webView = new WebView();
webView.getEngine().loadContent("http://google.com");
VBox vBox = new VBox(webView);
Scene scene = new Scene(vBox, 960, 600);
scene.setCursor(Cursor.CLOSED_HAND); // Doesn't work, reverted to pointer
primaryStage.setScene(scene);
primaryStage.show();
}
}
我也尝试更改webView光标本身，但无济于事。
文档的HTML内容定义了光标，因此您可以在加载文档后修改其正文样式：
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import javafx.application.Application;
import javafx.concurrent.Worker;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
public class WebViewCursorOverride extends Application {
public static void main(String[] args) {
launch(args);
}
public void start(Stage primaryStage) {
primaryStage.setTitle("JavaFX WebView Example");
WebView webView = new WebView();
webView.getEngine().getLoadWorker().stateProperty().addListener(
(o, old, state) -> {
if (state != Worker.State.SUCCEEDED) {
return;
}
Document doc = webView.getEngine().getDocument();
Element body = (Element)
doc.getElementsByTagName("body").item(0);
String style = body.getAttribute("style");
body.setAttribute("style", "cursor: grab;" + style);
});
webView.getEngine().load("https://google.com");
VBox vBox = new VBox(webView);
Scene scene = new Scene(vBox, 960, 600);
primaryStage.setScene(scene);
primaryStage.show();
}
}
您也可以从图像创建自己的光标：
body.setAttribute("style",
"cursor: url('https://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/Pixel_51_icon_cursor_click_top_right.svg/36px-Pixel_51_icon_cursor_click_top_right.svg.png') 27 9, default;" + style);
cursor CSS属性的完整定义是here。这是预定义游标的当前列表；请注意，并非每个系统都支持所有这些功能：
@ VGR提供的解决方案很不错，但是会引起机器闪烁。
更激烈的解决方案是用其他方法代替CursorManager使用的WebEngine。
例如，您可以基于默认的CursorManagerImpl2创建此CursorManagerImpl类：
public class CursorManagerImpl2 extends CursorManager<javafx.scene.Cursor> {
private final Map<String, javafx.scene.Cursor> map = new HashMap();
private ResourceBundle bundle;
private javafx.scene.Cursor defaultCursor = javafx.scene.Cursor.DEFAULT;
public CursorManagerImpl2() {}
public CursorManagerImpl2(javafx.scene.Cursor defaultCursor) {
this.defaultCursor = defaultCursor;
}
public javafx.scene.Cursor getDefaultCursor() {
return defaultCursor;
}
public void setDefaultCursor(javafx.scene.Cursor cursor) {
defaultCursor = cursor;
}
@Override
protected javafx.scene.Cursor getCustomCursor(WCImage image, int hotspotX, int hotspotY) {
return new ImageCursor(
com.sun.javafx.tk.Toolkit.getImageAccessor()
.fromPlatformImage(WCGraphicsManager.getGraphicsManager().toPlatformImage(image)),
hotspotX,
hotspotY);
}
@Override
protected javafx.scene.Cursor getPredefinedCursor(int type) {
switch (type) {
case 0:
default: return defaultCursor; // line changed
case 1: return javafx.scene.Cursor.CROSSHAIR;
case 2: return javafx.scene.Cursor.HAND;
case 3: return javafx.scene.Cursor.MOVE;
case 4: return javafx.scene.Cursor.TEXT;
case 5: return javafx.scene.Cursor.WAIT;
case 6: return this.getCustomCursor("help", javafx.scene.Cursor.DEFAULT);
case 7: return javafx.scene.Cursor.E_RESIZE;
case 8: return javafx.scene.Cursor.N_RESIZE;
case 9: return javafx.scene.Cursor.NE_RESIZE;
case 10: return javafx.scene.Cursor.NW_RESIZE;
case 11: return javafx.scene.Cursor.S_RESIZE;
case 12: return javafx.scene.Cursor.SE_RESIZE;
case 13: return javafx.scene.Cursor.SW_RESIZE;
case 14: return javafx.scene.Cursor.W_RESIZE;
case 15: return javafx.scene.Cursor.V_RESIZE;
case 16: return javafx.scene.Cursor.H_RESIZE;
case 17: return this.getCustomCursor("resize.nesw", javafx.scene.Cursor.DEFAULT);
case 18: return this.getCustomCursor("resize.nwse", javafx.scene.Cursor.DEFAULT);
case 19: return this.getCustomCursor("resize.column", javafx.scene.Cursor.H_RESIZE);
case 20: return this.getCustomCursor("resize.row", javafx.scene.Cursor.V_RESIZE);
case 21: return this.getCustomCursor("panning.middle", javafx.scene.Cursor.DEFAULT);
case 22: return this.getCustomCursor("panning.east", javafx.scene.Cursor.DEFAULT);
case 23: return this.getCustomCursor("panning.north", javafx.scene.Cursor.DEFAULT);
case 24: return this.getCustomCursor("panning.ne", javafx.scene.Cursor.DEFAULT);
case 25: return this.getCustomCursor("panning.nw", javafx.scene.Cursor.DEFAULT);
case 26: return this.getCustomCursor("panning.south", javafx.scene.Cursor.DEFAULT);
case 27: return this.getCustomCursor("panning.se", javafx.scene.Cursor.DEFAULT);
case 28: return this.getCustomCursor("panning.sw", javafx.scene.Cursor.DEFAULT);
case 29: return this.getCustomCursor("panning.west", javafx.scene.Cursor.DEFAULT);
case 30: return this.getCustomCursor("vertical.text", javafx.scene.Cursor.DEFAULT);
case 31: return this.getCustomCursor("cell", javafx.scene.Cursor.DEFAULT);
case 32: return this.getCustomCursor("context.menu", javafx.scene.Cursor.DEFAULT);
case 33: return this.getCustomCursor("no.drop", javafx.scene.Cursor.DEFAULT);
case 34: return this.getCustomCursor("not.allowed", javafx.scene.Cursor.DEFAULT);
case 35: return this.getCustomCursor("progress", javafx.scene.Cursor.WAIT);
case 36: return this.getCustomCursor("alias", javafx.scene.Cursor.DEFAULT);
case 37: return this.getCustomCursor("zoom.in", javafx.scene.Cursor.DEFAULT);
case 38: return this.getCustomCursor("zoom.out", javafx.scene.Cursor.DEFAULT);
case 39: return this.getCustomCursor("copy", javafx.scene.Cursor.DEFAULT);
case 40: return javafx.scene.Cursor.NONE;
case 41: return this.getCustomCursor("grab", javafx.scene.Cursor.OPEN_HAND);
case 42: return this.getCustomCursor("grabbing", javafx.scene.Cursor.CLOSED_HAND);
}
}
private javafx.scene.Cursor getCustomCursor(String cursorId, javafx.scene.Cursor defaultCursor) {
javafx.scene.Cursor customCursor = this.map.get(cursorId);
if (customCursor == null) {
try {
if (this.bundle == null) {
this.bundle =
ResourceBundle.getBundle("com.sun.javafx.webkit.Cursors", Locale.getDefault());
}
if (this.bundle != null) {
String fileName = this.bundle.getString(cursorId + ".file");
javafx.scene.image.Image image =
new Image(com.sun.javafx.webkit.CursorManagerImpl.class.getResourceAsStream(fileName));
fileName = this.bundle.getString(cursorId + ".hotspotX");
int hotspotX = Integer.parseInt(fileName);
fileName = this.bundle.getString(cursorId + ".hotspotY");
int hotspotY = Integer.parseInt(fileName);
customCursor = new ImageCursor(image, hotspotX, hotspotY);
}
} catch (MissingResourceException e) {
}
if (customCursor == null) {
customCursor = defaultCursor;
}
this.map.put(cursorId, customCursor);
}
return customCursor;
}
}
然后您可以将管理器替换为
CursorManager.setCursorManager(new CursorManagerImpl2(javafx.scene.Cursor.CROSSHAIR));
要更改默认光标，可以使用
((CursorManagerImpl2) CursorManager.getCursorManager()).setDefaultCursor(javafx.scene.Cursor.MOVE);
注意，您可能必须将com.sun程序包添加到gradle：
compileJava {
options.compilerArgs.addAll(['--add-exports=javafx.web/com.sun.webkit=ALL-UNNAMED', '--add-exports=javafx.web/com.sun.javafx.webkit=ALL-UNNAMED', '--add-exports=javafx.web/com.sun.webkit.graphics=ALL-UNNAMED', '--add-exports=javafx.graphics/com.sun.javafx.tk=ALL-UNNAMED'])
}
run {
jvmArgs = ['--add-exports=javafx.web/com.sun.webkit=ALL-UNNAMED', '--add-exports=javafx.web/com.sun.javafx.webkit=ALL-UNNAMED', '--add-exports=javafx.web/com.sun.webkit.graphics=ALL-UNNAMED', '--add-exports=javafx.graphics/com.sun.javafx.tk=ALL-UNNAMED']
}
这样，即使使用大型自定义光标，在移动鼠标时也不会出现任何闪烁。