com.bladecoder.engine.ui.Pointer.java Source code

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Here is the source code for com.bladecoder.engine.ui.Pointer.java

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/*******************************************************************************
 * Copyright 2014 Rafael Garcia Moreno.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package com.bladecoder.engine.ui;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Peripheral;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Touchable;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.utils.viewport.Viewport;
import com.bladecoder.engine.util.DPIUtils;

public class Pointer extends Actor {
    private static final String POINTER_ICON = "pointer";

    private TextureRegion pointerIcon;

    private final Vector2 mousepos = new Vector2();

    private float pointerScale;

    public Pointer(Skin skin) {
        pointerIcon = skin.getAtlas().findRegion(POINTER_ICON);
        setTouchable(Touchable.disabled);

        resize();
        show();
    }

    private void getInputUnproject(Viewport v, Vector2 out) {
        out.set(Gdx.input.getX(), Gdx.input.getY());

        v.unproject(out);
    }

    @Override
    public void act(float delta) {
        super.act(delta);

        if (getStage().getActors().get(getStage().getActors().size - 1) != this)
            toFront();
    }

    @Override
    public void draw(Batch batch, float alpha) {

        getInputUnproject(getStage().getViewport(), mousepos);

        setPosition(mousepos.x - getWidth() / 2, mousepos.y - getHeight() / 2);

        batch.setColor(Color.WHITE);

        batch.draw(pointerIcon, getX(), getY(), getWidth(), getHeight());
    }

    public void resize() {
        pointerScale = DPIUtils.getTouchMinSize() / pointerIcon.getRegionHeight() * .8f;
        setSize(pointerIcon.getRegionWidth() * pointerScale, pointerIcon.getRegionHeight() * pointerScale);
    }

    public void show() {
        if (!Gdx.input.isPeripheralAvailable(Peripheral.MultitouchScreen)) {
            setVisible(true);
        } else {
            setVisible(false);
        }
    }

    public void hide() {
        setVisible(false);
    }
}