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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.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.ParentRenderNode;
import org.mini2Dx.ui.render.SliderRenderNode;
import org.mini2Dx.ui.render.UiContainerRenderTree;
import org.mini2Dx.ui.style.StyleRule;
/**
* A slider UI element that wraps a float value
*/
public class Slider extends UiElement implements Actionable {
@Field(optional = true)
private float value;
@Field(optional = true)
private float valueStep = 0.1f;
@Field(optional = true)
private boolean changedOnBeginEvent = false;
@Field(optional = true)
private boolean enabled = true;
private SliderRenderNode renderNode;
private Array actionListeners;
/**
* Constructor. Generates a unique ID for this {@link Slider}
*/
public Slider() {
this(null);
}
/**
* Constructor
*
* @param id
* The unique ID for this {@link Slider}
*/
public Slider(@ConstructorArg(clazz = String.class, name = "id") String id) {
this(id, 0f, 0f, 300f, 64f);
}
/**
* 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 Slider(@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 Slider(@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);
}
@Override
public void attach(ParentRenderNode parentRenderNode) {
if (renderNode != null) {
return;
}
renderNode = new SliderRenderNode(parentRenderNode, this);
parentRenderNode.addChild(renderNode);
}
@Override
public void detach(ParentRenderNode parentRenderNode) {
if (renderNode == null) {
return;
}
parentRenderNode.removeChild(renderNode);
renderNode.dispose();
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 (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 syncWithUpdate(UiContainerRenderTree rootNode) {
while (effects.size > 0) {
renderNode.applyEffect(effects.removeFirst());
}
super.syncWithUpdate(rootNode);
}
@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().getSliderStyleRule(styleId, ScreenSize.XS);
}
@Override
public boolean isEnabled() {
return enabled;
}
@Override
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
@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 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);
}
/**
* Returns the {@link Slider} value
*
* @return A value between 0.0 and 1.0
*/
public float getValue() {
return value;
}
/**
* Sets the {@link Slider} value.
*
* @param value
* A value between 0.0 and 1.0
*/
public void setValue(float value) {
if (value < 0f) {
this.value = 0f;
} else if (value > 1f) {
this.value = 1f;
} else {
this.value = value;
}
}
/**
* Returns the amount to change the value by on each keyboard/gamepad
* event
*
* @return 0.1 by default
*/
public float getValueStep() {
return valueStep;
}
/**
* Sets the amount to change the value by on each keyboard/gamepad event
*
* @param valueStep
* A non-zero value
*/
public void setValueStep(float valueStep) {
if (valueStep == 0f) {
return;
}
this.valueStep = Math.abs(valueStep);
}
/**
* Returns if the value should change when a keyboard/gamepad event
* begins and change the value until the event ends.
*
* @return False by default
*/
public boolean isChangedOnBeginEvent() {
return changedOnBeginEvent;
}
/**
* Sets if the value should change when a keyboard/gamepad event
* begins and change the value until the event ends.
*
* @param changedOnBeginEvent False to only change on the end event
*/
public void setChangedOnBeginEvent(boolean changedOnBeginEvent) {
this.changedOnBeginEvent = changedOnBeginEvent;
}
@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 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();
}
}
