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Add support for predictive back gestures (libgdx#7429)
* Remove back/menu methods (deprecated 5 years ago) * Add enableOnBackInvokedCallback to gdx-tests manifest * Add back invoke support and test * Update CHANGES * Apply formatter * Realised where I went wrong with inner class * No-one else is using @nullable so I guess I shouldn't either * Suppose it covers GWT as well * Undo constructor nonsense * Fix malformed Javadoc * Apply formatter * Continuation of e074acc reversion, nearly forgot * Revisit BackTest * Apply formatter * Make test exclusive to Android It doesn't make sense for different platforms. Input.Keys.BACK doesn't catch the browser back button on GWT. * Less ambiguous class name * Apply formatter * Less dumb-dumb anchor * final PredictiveBackHandler * Apply formatter * Mostly revert 5b2d072 * Remove unneeded `if` nesting --------- Co-authored-by: GitHub Action <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,69 @@ | ||
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| package com.badlogic.gdx.tests; | ||
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| import com.badlogic.gdx.Gdx; | ||
| import com.badlogic.gdx.Input; | ||
| import com.badlogic.gdx.InputAdapter; | ||
| import com.badlogic.gdx.graphics.Color; | ||
| import com.badlogic.gdx.graphics.g2d.BitmapFont; | ||
| import com.badlogic.gdx.graphics.g2d.SpriteBatch; | ||
| import com.badlogic.gdx.tests.utils.GdxTest; | ||
| import com.badlogic.gdx.utils.ScreenUtils; | ||
| import com.badlogic.gdx.utils.viewport.FitViewport; | ||
| import com.badlogic.gdx.utils.viewport.Viewport; | ||
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| /** Check if predictive back gesture works, loosely modeled upon Android's back stack. Tap the screen to increment the counter. Go | ||
| * back to decrement the counter. If the counter is 0, the test will be exited. */ | ||
| public class BackTest extends GdxTest { | ||
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| private SpriteBatch batch; | ||
| private BitmapFont font; | ||
| private final Viewport viewport = new FitViewport(160, 90); | ||
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| private int stackDepth; | ||
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| @Override | ||
| public void create () { | ||
| batch = new SpriteBatch(); | ||
| font = new BitmapFont(); | ||
| Gdx.input.setInputProcessor(new InputAdapter() { | ||
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| @Override | ||
| public boolean touchDown (int screenX, int screenY, int pointer, int button) { | ||
| int screenWidth = Gdx.graphics.getBackBufferWidth(); | ||
| float safeZone = screenWidth * .1f; | ||
| if (screenX >= safeZone && screenX < screenWidth - safeZone) { | ||
| stackDepth++; | ||
| Gdx.input.setCatchKey(Input.Keys.BACK, stackDepth > 0); | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
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| @Override | ||
| public boolean keyDown (int keycode) { | ||
| if (keycode == Input.Keys.BACK) { | ||
| stackDepth--; | ||
| Gdx.input.setCatchKey(Input.Keys.BACK, stackDepth > 0); | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
| }); | ||
| } | ||
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| @Override | ||
| public void render () { | ||
| ScreenUtils.clear(Color.BLACK); | ||
| batch.begin(); | ||
| font.draw(batch, "Stack depth: " + stackDepth, 20, 50); | ||
| batch.end(); | ||
| } | ||
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| @Override | ||
| public void resize (int width, int height) { | ||
| viewport.update(width, height, true); | ||
| batch.setProjectionMatrix(viewport.getCamera().combined); | ||
| } | ||
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| } |