package com.example.datalibrary.deptrum;

import android.content.Context;
import android.opengl.GLSurfaceView;
import android.util.AttributeSet;

public class GLFrameSurface extends GLSurfaceView {

    private ICallback cb = null;
    private GLFrameRenderer mRenderer;

    public GLFrameSurface(Context context) {
        super(context);
        init();
    }

    public GLFrameSurface(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    private synchronized void init() {
        if (mRenderer == null) {
            setEGLContextClientVersion(2);
            mRenderer = new GLFrameRenderer(this);
            this.setRenderer(mRenderer);
            setRenderMode(RENDERMODE_WHEN_DIRTY);
        } else {
            if (this.getCurrentRenderer() == null) {
                this.setRenderer(mRenderer);
                setRenderMode(RENDERMODE_WHEN_DIRTY);
            }
        }
    }

    public GLFrameRenderer getCurrentRenderer() {
        return mRenderer;
    }

    public void setCallback(ICallback cb) {
        this.cb = cb;
    }

    @Override
    public void setRenderer(Renderer renderer) {
        super.setRenderer(renderer);
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
    }

    @Override
    protected void onAttachedToWindow() {
        // Utils.LOGD("surface onAttachedToWindow()");
        super.onAttachedToWindow();
        init();
        // setRenderMode() only takes effectd after SurfaceView attached to window!
        // note that on this mode, surface will not render util GLSurfaceView.requestRender() is
        // called, it's good and efficient -v-
        // “WHEN_DIRTY”是由用户调用requestRenderer()绘制
        // Utils.LOGD("surface setRenderMode RENDERMODE_WHEN_DIRTY");
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);

        if (w > 0 && h > 0) {
            if (null != cb) {
                cb.onSizeChanged(w, h);
            }
        }
    }

    public interface ICallback {
        void onSizeChanged(int w, int h);
    }
}