org.mini2Dx.ui.render.UiContainerRenderTree Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of mini2Dx-ui Show documentation
null
There is a newer version: 2.0.0-alpha.32
/**
 * Copyright (c) 2015 See AUTHORS file
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
 * Neither the name of the mini2Dx nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.mini2Dx.ui.render;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.mini2Dx.core.controller.ControllerType;
import org.mini2Dx.ui.InputSource;
import org.mini2Dx.ui.UiContainer;
import org.mini2Dx.ui.layout.LayoutState;
import org.mini2Dx.ui.layout.ScreenSize;
import org.mini2Dx.ui.listener.ScreenSizeListener;
import org.mini2Dx.ui.style.ParentStyleRule;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.assets.AssetManager;

/**
 * {@link RenderNode} implementation for {@link UiContainer}
 */
public class UiContainerRenderTree extends ParentRenderNode {
	private static final String LOGGING_TAG = UiContainerRenderTree.class.getSimpleName();

	private final AssetManager assetManager;
	private final Map> elementIdLookupCache = new HashMap>();

	private List screenSizeListeners;
	private ScreenSize currentScreenSize = ScreenSize.XS;
	private boolean screenSizeChanged = false;
	private float screenSizeScale = 1f;

	public UiContainerRenderTree(UiContainer uiContainer, AssetManager assetManager) {
		super(null, uiContainer);
		this.assetManager = assetManager;

		onResize(uiContainer.getWidth(), uiContainer.getHeight());
	}

	public void update(float delta) {
		super.update(this, delta);
	}

	public void layout() {
		layout(new LayoutState(this, assetManager, element.getTheme(), currentScreenSize, 12,
				((UiContainer) element).getWidth(), screenSizeChanged));
	}

	@Override
	public void layout(LayoutState layoutState) {
		if (!isDirty() && !layoutState.isScreenSizeChanged()) {
			return;
		}
		if (element.isDebugEnabled()) {
			Gdx.app.log(LOGGING_TAG, "Layout triggered");
		}
		rootNode = this;
		elementIdLookupCache.clear();
		
		style = determineStyleRule(layoutState);
		zIndex = element.getZIndex();
		flexDirection = element.getFlexDirection();
		preferredContentWidth = determinePreferredContentWidth(layoutState);
		preferredContentHeight = determinePreferredContentHeight(layoutState);
		xOffset = determineXOffset(layoutState);
		yOffset = determineYOffset(layoutState);
		outerArea.forceTo(xOffset, yOffset, preferredContentWidth, preferredContentHeight);

		for (RenderLayer layer : layers.values()) {
			layer.layout(layoutState);
		}

		setImmediateDirty(false);
		setDirty(false);
		childDirty = false;
		screenSizeChanged = false;
		initialLayoutOccurred = true;
	}

	@Override
	public void addChild(RenderNode child) {
		int zIndex = child.getZIndex();
		if (!layers.containsKey(zIndex)) {
			layers.put(zIndex, new UiContainerRenderLayer(this, zIndex));
		}
		layers.get(zIndex).add(child);
		setDirty(true);
	}

	public void onResize(int width, int height) {
		screenSizeScale = 1f;
		switch(element.getScreenSizeScaleMode()) {
		case LINEAR:
			screenSizeScale = element.getScaleX();
			break;
		case INVERSE:
			screenSizeScale = 1f / element.getScaleX();
			break;
		case NO_SCALING:
		default:
			break;
		}
		
		ScreenSize screenSize = ScreenSize.XS;
		if (width >= ScreenSize.SM.getMinSize(screenSizeScale)) {
			screenSize = ScreenSize.SM;
		}
		if (width >= ScreenSize.MD.getMinSize(screenSizeScale)) {
			screenSize = ScreenSize.MD;
		}
		if (width >= ScreenSize.LG.getMinSize(screenSizeScale)) {
			screenSize = ScreenSize.LG;
		}
		if (width >= ScreenSize.XL.getMinSize(screenSizeScale)) {
			screenSize = ScreenSize.XL;
		}
		screenSizeChanged = true;
		this.currentScreenSize = screenSize;

		if (element.isDebugEnabled()) {
			Gdx.app.log(LOGGING_TAG, "Screen resize to " + currentScreenSize + " - " + width + "x" + height);
		}

		if (screenSizeListeners == null) {
			return;
		}
		for (int i = screenSizeListeners.size() - 1; i >= 0; i--) {
			screenSizeListeners.get(i).onScreenSizeChanged(currentScreenSize);
		}
	}

	public void addScreenSizeListener(ScreenSizeListener listener) {
		if (screenSizeListeners == null) {
			screenSizeListeners = new ArrayList(1);
		}
		screenSizeListeners.add(listener);
	}

	public void removeScreenSizeListener(ScreenSizeListener listener) {
		if (screenSizeListeners == null) {
			return;
		}
		screenSizeListeners.remove(listener);
	}

	@Override
	protected float determinePreferredContentWidth(LayoutState layoutState) {
		return ((UiContainer) element).getWidth();
	}

	@Override
	protected float determinePreferredContentHeight(LayoutState layoutState) {
		return ((UiContainer) element).getHeight();
	}

	@Override
	protected float determineXOffset(LayoutState layoutState) {
		return 0f;
	}

	@Override
	protected float determineYOffset(LayoutState layoutState) {
		return 0f;
	}

	@Override
	protected ParentStyleRule determineStyleRule(LayoutState layoutState) {
		return new ParentStyleRule();
	}

	@Override
	public RenderNode getElementById(String id) {
		if (element.getId().equals(id)) {
			return this;
		}
		if (elementIdLookupCache.containsKey(id)) {
			return elementIdLookupCache.get(id);
		}
		for (RenderLayer layer : layers.values()) {
			RenderNode result = layer.getElementById(id);
			if (result != null) {
				elementIdLookupCache.put(id, result);
				return result;
			}
		}
		return null;
	}

	@Override
	public boolean isDirty() {
		return screenSizeChanged || super.isDirty();
	}

	public InputSource getLastInputSource() {
		return ((UiContainer) element).getLastInputSource();
	}

	public ControllerType getLastControllerType() {
		return ((UiContainer) element).getLastControllerType();
	}

	public float getScreenSizeScale() {
		return screenSizeScale;
	}
}