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LibGDX: Hide Mouse Cursor (Desktop)
import java.nio.IntBuffer;
import org.lwjgl.BufferUtils;
import org.lwjgl.LWJGLException;
import org.lwjgl.input.Mouse;
import com.badlogic.gdx.Application.ApplicationType;
import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.InputAdapter;
import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.utils.GdxRuntimeException;
/** NOTE: Presumably LibGDX will implement this functionality in time, making
* this snippet obsolete. */
public class HideCursor implements ApplicationListener {
public static void setHWCursorVisible(boolean visible) throws LWJGLException {
if (Gdx.app.getType() != ApplicationType.Desktop && Gdx.app instanceof LwjglApplication)
return;
if (emptyCursor == null) {
if (Mouse.isCreated()) {
int min = org.lwjgl.input.Cursor.getMinCursorSize();
IntBuffer tmp = BufferUtils.createIntBuffer(min * min);
emptyCursor = new org.lwjgl.input.Cursor(min, min, min / 2, min / 2, 1, tmp, null);
} else {
throw new LWJGLException(
"Could not create empty cursor before Mouse object is created");
}
}
if (Mouse.isInsideWindow())
Mouse.setNativeCursor(visible ? null : emptyCursor);
}
public static void main(String[] args) {
LwjglApplicationConfiguration cfg = new LwjglApplicationConfiguration();
cfg.title = "atmos";
cfg.useGL20 = true;
cfg.width = 480;
cfg.height = 320;
LwjglApplication app = new LwjglApplication(new HideCursor(), cfg);
}
SpriteBatch batch;
OrthographicCamera camera;
static org.lwjgl.input.Cursor emptyCursor;
boolean hwVisible = false;
Texture cursor;
int xHotspot, yHotspot;
@Override
public void create() {
batch = new SpriteBatch();
camera = new OrthographicCamera();
cursor = new Texture(Gdx.files.internal("data/cursor.png"));
xHotspot = 0;
yHotspot = cursor.getHeight(); // lower left origin!
// press SPACE to toggle software cursor
Gdx.input.setInputProcessor(new InputAdapter() {
public boolean keyDown(int key) {
if (key == Keys.SPACE) {
hwVisible = !hwVisible;
return true;
}
return false;
}
});
}
@Override
public void resize(int width, int height) {
camera.setToOrtho(false, width, height);
batch.setProjectionMatrix(camera.combined);
}
@Override
public void render() {
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
Gdx.gl.glClearColor(0.5f, 0.5f, 0.5f, 1f);
try {
setHWCursorVisible(hwVisible);
} catch (LWJGLException e) {
throw new GdxRuntimeException(e);
}
batch.begin();
// ... draw sprites ...
// draw SW cursor
if (!hwVisible) {
int x = Gdx.input.getX();
int y = Gdx.input.getY();
batch.draw(cursor, x - xHotspot, Gdx.graphics.getHeight() - y - 1 - yHotspot);
}
batch.end();
}
@Override
public void pause() {
}
@Override
public void resume() {
}
@Override
public void dispose() {
cursor.dispose();
batch.dispose();
}
}
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