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/*******************************************************************************
* Copyright 2019 See AUTHORS file
*
* 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 org.mini2Dx.ui.element;
import org.mini2Dx.gdx.utils.Array;
import org.mini2Dx.core.Graphics;
import org.mini2Dx.core.serialization.annotation.ConstructorArg;
import org.mini2Dx.core.serialization.annotation.Field;
import org.mini2Dx.ui.UiContainer;
import org.mini2Dx.ui.event.ActionEvent;
import org.mini2Dx.ui.event.ActionEventPool;
import org.mini2Dx.ui.event.EventTrigger;
import org.mini2Dx.ui.event.params.EventTriggerParams;
import org.mini2Dx.ui.layout.ScreenSize;
import org.mini2Dx.ui.listener.ActionListener;
import org.mini2Dx.ui.render.CustomUiElementRenderNode;
import org.mini2Dx.ui.render.ImageRenderNode;
import org.mini2Dx.ui.render.ParentRenderNode;
import org.mini2Dx.ui.render.UiContainerRenderTree;
import org.mini2Dx.ui.style.StyleRule;
/**
* Base class for implementing custom {@link UiElement}s
*/
public abstract class CustomUiElement extends UiElement implements Actionable {
private Array actionListeners;
private CustomUiElementRenderNode renderNode;
@Field(optional=true)
private boolean enabled = true;
/**
* Constructor. Generates a unique ID for this {@link Checkbox}
*/
public CustomUiElement() {
this(null);
}
/**
* Constructor
*
* @param id
* The unique ID for this {@link Checkbox}
*/
public CustomUiElement(@ConstructorArg(clazz = String.class, name = "id") String id) {
this(id, 0f, 0f, 20f, 20f);
}
/**
* Constructor
* @param x The x coordinate of this element relative to its parent
* @param y The y coordinate of this element relative to its parent
* @param width The width of this element
* @param height The height of this element
*/
public CustomUiElement(@ConstructorArg(clazz = Float.class, name = "x") float x,
@ConstructorArg(clazz = Float.class, name = "y") float y,
@ConstructorArg(clazz = Float.class, name = "width") float width,
@ConstructorArg(clazz = Float.class, name = "height") float height) {
this(null, x, y, width, height);
}
/**
* Constructor
* @param id The unique ID for this element (if null an ID will be generated)
* @param x The x coordinate of this element relative to its parent
* @param y The y coordinate of this element relative to its parent
* @param width The width of this element
* @param height The height of this element
*/
public CustomUiElement(@ConstructorArg(clazz = String.class, name = "id") String id,
@ConstructorArg(clazz = Float.class, name = "x") float x,
@ConstructorArg(clazz = Float.class, name = "y") float y,
@ConstructorArg(clazz = Float.class, name = "width") float width,
@ConstructorArg(clazz = Float.class, name = "height") float height) {
super(id, x, y, width, height);
}
/**
* Update the UI state
* @param uiContainer The root {@link UiElement}
* @param delta The time since the last update
*/
public abstract void update(UiContainerRenderTree uiContainer, float delta);
/**
* Interpoalte the UI state
* @param alpha
*/
public abstract void interpolate(float alpha);
/**
* Render the {@link UiElement}
* @param g The {@link Graphics} context
* @param renderNode The {@link org.mini2Dx.ui.render.RenderNode} detailing where to render the element
*/
public abstract void render(Graphics g, CustomUiElementRenderNode renderNode);
/**
* An overridable method that is called when the mouse moves
* @param mouseX The mouse screen X coordinate
* @param mouseY The mouse screen Y coordinate
*/
public void onMouseMoved(int mouseX, int mouseY) {}
/**
* An overridable method that is called when the mouse/touch is pressed down on this element
* @param mouseX The mouse/touch screen X coordinate
* @param mouseY The mouse/touch screen Y coordinate
* @param pointer The pointer ID
* @param button The button ID (see Input.buttons)
*/
public void onMouseDown(int mouseX, int mouseY, int pointer, int button) {}
/**
* An overridable method that is called when the mouse/touch is released after being pressed down on this element
* @param mouseX The mouse/touch screen X coordinate
* @param mouseY The mouse/touch screen Y coordinate
* @param pointer The pointer ID
* @param button The button ID (see Input.buttons)
*/
public void onMouseUp(int mouseX, int mouseY, int pointer, int button) {}
@Override
public void attach(ParentRenderNode parentRenderNode) {
if (renderNode != null) {
return;
}
renderNode = new CustomUiElementRenderNode(parentRenderNode, this);
parentRenderNode.addChild(renderNode);
}
@Override
public void detach(ParentRenderNode parentRenderNode) {
if (renderNode == null) {
return;
}
parentRenderNode.removeChild(renderNode);
renderNode = null;
}
@Override
public void invokeBeginHover() {
if(renderNode == null) {
return;
}
renderNode.beginFakeHover();
}
@Override
public void invokeEndHover() {
if(renderNode == null) {
return;
}
renderNode.endFakeHover();
}
@Override
public void setVisibility(Visibility visibility) {
if (visibility == null) {
return;
}
if (this.visibility == visibility) {
return;
}
this.visibility = visibility;
if (renderNode == null) {
return;
}
renderNode.setDirty();
}
@Override
public void setStyleId(String styleId) {
if (styleId == null) {
return;
}
if (this.styleId.equals(styleId)) {
return;
}
this.styleId = styleId;
if (renderNode == null) {
return;
}
renderNode.setDirty();
}
@Override
public void setZIndex(int zIndex) {
this.zIndex = zIndex;
if (renderNode == null) {
return;
}
renderNode.setDirty();
}
@Override
public StyleRule getStyleRule() {
if(!UiContainer.isThemeApplied()) {
return null;
}
return UiContainer.getTheme().getColumnStyleRule(styleId, ScreenSize.XS);
}
@Override
public boolean isRenderNodeDirty() {
if (renderNode == null) {
return true;
}
return renderNode.isDirty();
}
@Override
public void setRenderNodeDirty() {
if (renderNode == null) {
return;
}
renderNode.setDirty();
}
@Override
public boolean isInitialLayoutOccurred() {
if (renderNode == null) {
return false;
}
return renderNode.isInitialLayoutOccurred();
}
@Override
public boolean isInitialUpdateOccurred() {
if(renderNode == null) {
return false;
}
return renderNode.isInitialUpdateOccurred();
}
@Override
public void notifyActionListenersOfBeginEvent(EventTrigger eventTrigger, EventTriggerParams eventTriggerParams) {
if(actionListeners == null) {
return;
}
ActionEvent event = ActionEventPool.allocate();
event.set(this, eventTrigger, eventTriggerParams);
for(int i = actionListeners.size - 1; i >= 0; i--) {
actionListeners.get(i).onActionBegin(event);
}
ActionEventPool.release(event);
}
@Override
public void notifyActionListenersOfEndEvent(EventTrigger eventTrigger, EventTriggerParams eventTriggerParams) {
if(actionListeners == null) {
return;
}
ActionEvent event = ActionEventPool.allocate();
event.set(this, eventTrigger, eventTriggerParams);
for(int i = actionListeners.size - 1; i >= 0; i--) {
actionListeners.get(i).onActionEnd(event);
}
ActionEventPool.release(event);
}
@Override
public boolean isEnabled() {
return enabled;
}
@Override
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
@Override
public void addActionListener(ActionListener listener) {
if(actionListeners == null) {
actionListeners = new Array(true, 1, ActionListener.class);
}
actionListeners.add(listener);
}
@Override
public void removeActionListener(ActionListener listener) {
if(actionListeners == null) {
return;
}
actionListeners.removeValue(listener, false);
}
@Override
public int getRenderX() {
if(renderNode == null) {
return Integer.MIN_VALUE;
}
return renderNode.getOuterRenderX();
}
@Override
public int getRenderY() {
if(renderNode == null) {
return Integer.MIN_VALUE;
}
return renderNode.getOuterRenderY();
}
@Override
public int getRenderWidth() {
if(renderNode == null) {
return -1;
}
return renderNode.getOuterRenderWidth();
}
@Override
public int getRenderHeight() {
if(renderNode == null) {
return -1;
}
return renderNode.getOuterRenderHeight();
}
}
