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package dev.isxander.yacl3.gui;
import com.mojang.blaze3d.Blaze3D;
import com.mojang.blaze3d.platform.InputConstants;
import dev.isxander.yacl3.gui.image.ImageRenderer;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.ComponentPath;
import net.minecraft.client.gui.Font;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.gui.components.AbstractWidget;
import net.minecraft.client.gui.narration.NarratedElementType;
import net.minecraft.client.gui.narration.NarrationElementOutput;
import net.minecraft.client.gui.navigation.FocusNavigationEvent;
import net.minecraft.client.gui.navigation.ScreenRectangle;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.Style;
import net.minecraft.util.FormattedCharSequence;
import net.minecraft.util.Mth;
import org.jetbrains.annotations.Nullable;
import java.util.List;
import java.util.Optional;
import java.util.function.Supplier;
public class OptionDescriptionWidget extends AbstractWidget {
private static final int AUTO_SCROLL_TIMER = 1500;
private static final float AUTO_SCROLL_SPEED = 1; // lines per second
private @Nullable DescriptionWithName description;
private List<FormattedCharSequence> wrappedText;
private static final Minecraft minecraft = Minecraft.getInstance();
private static final Font font = minecraft.font;
private Supplier<ScreenRectangle> dimensions;
private float targetScrollAmount, currentScrollAmount;
private int maxScrollAmount;
private int descriptionY;
private int lastInteractionTime;
private boolean scrollingBackward;
public OptionDescriptionWidget(Supplier<ScreenRectangle> dimensions, @Nullable DescriptionWithName description) {
super(0, 0, 0, 0, description == null ? Component.empty() : description.name());
this.dimensions = dimensions;
this.setOptionDescription(description);
}
@Override
public void renderWidget(GuiGraphics graphics, int mouseX, int mouseY, float delta) {
if (description == null) return;
currentScrollAmount = Mth.lerp(delta * 0.5f, currentScrollAmount, targetScrollAmount);
ScreenRectangle dimensions = this.dimensions.get();
this.setX(dimensions.left());
this.setY(dimensions.top());
this.width = dimensions.width();
this.height = dimensions.height();
int y = getY();
int nameWidth = font.width(description.name());
if (nameWidth > getWidth()) {
renderScrollingString(graphics, font, description.name(), getX(), y, getX() + getWidth(), y + font.lineHeight, -1);
} else {
graphics.drawString(font, description.name(), getX(), y, 0xFFFFFF);
}
y += 5 + font.lineHeight;
graphics.enableScissor(getX(), y, getX() + getWidth(), getY() + getHeight());
y -= (int)currentScrollAmount;
if (description.description().image().isDone()) {
var image = description.description().image().join();
if (image.isPresent()) {
y += image.get().render(graphics, getX(), y, getWidth(), delta) + 5;
}
}
if (wrappedText == null)
wrappedText = font.split(description.description().text(), getWidth());
descriptionY = y;
for (var line : wrappedText) {
graphics.drawString(font, line, getX(), y, 0xFFFFFF);
y += font.lineHeight;
}
graphics.disableScissor();
maxScrollAmount = Math.max(0, y + (int)currentScrollAmount - getY() - getHeight());
if (isHoveredOrFocused()) {
lastInteractionTime = currentTimeMS();
}
Style hoveredStyle = getDescStyle(mouseX, mouseY);
if (hoveredStyle != null && hoveredStyle.getHoverEvent() != null) {
graphics.renderComponentHoverEffect(font, hoveredStyle, mouseX, mouseY);
}
if (isFocused()) {
graphics.renderOutline(getX(), getY(), getWidth(), getHeight(), -1);
}
}
@Override
public boolean mouseClicked(double mouseX, double mouseY, int button) {
Style clickedStyle = getDescStyle((int) mouseX, (int) mouseY);
if (clickedStyle != null && clickedStyle.getClickEvent() != null) {
if (minecraft.screen.handleComponentClicked(clickedStyle)) {
playDownSound(minecraft.getSoundManager());
return true;
}
return false;
}
return false;
}
@Override
public boolean mouseScrolled(double mouseX, double mouseY, /*? if >1.20.2 {*/ double horizontal, /*?}*/ double vertical) {
if (isMouseOver(mouseX, mouseY)) {
targetScrollAmount = Mth.clamp(targetScrollAmount - (int) vertical * 10, 0, maxScrollAmount);
lastInteractionTime = currentTimeMS();
return true;
}
return false;
}
@Override
public boolean keyPressed(int keyCode, int scanCode, int modifiers) {
if (isFocused()) {
switch (keyCode) {
case InputConstants.KEY_UP ->
targetScrollAmount = Mth.clamp(targetScrollAmount - 10, 0, maxScrollAmount);
case InputConstants.KEY_DOWN ->
targetScrollAmount = Mth.clamp(targetScrollAmount + 10, 0, maxScrollAmount);
default -> {
return false;
}
}
return true;
}
return false;
}
public void tick() {
if (description != null) {
description.description().image()
.getNow(Optional.empty())
.ifPresent(ImageRenderer::tick);
}
float pxPerTick = AUTO_SCROLL_SPEED / 20f * font.lineHeight;
if (maxScrollAmount > 0 && currentTimeMS() - lastInteractionTime > AUTO_SCROLL_TIMER) {
if (scrollingBackward) {
pxPerTick *= -1;
if (targetScrollAmount + pxPerTick < 0) {
scrollingBackward = false;
lastInteractionTime = currentTimeMS();
}
} else {
if (targetScrollAmount + pxPerTick > maxScrollAmount) {
scrollingBackward = true;
lastInteractionTime = currentTimeMS();
}
}
targetScrollAmount = Mth.clamp(targetScrollAmount + pxPerTick, 0, maxScrollAmount);
}
}
private Style getDescStyle(int mouseX, int mouseY) {
if (!clicked(mouseX, mouseY))
return null;
int x = mouseX - getX();
int y = mouseY - descriptionY;
if (x < 0 || x > getX() + getWidth()) return null;
if (y < 0 || y > getY() + getHeight()) return null;
int line = y / font.lineHeight;
if (line >= wrappedText.size()) return null;
return font.getSplitter().componentStyleAtWidth(wrappedText.get(line), x);
}
@Override
protected void updateWidgetNarration(NarrationElementOutput builder) {
if (description != null) {
builder.add(NarratedElementType.TITLE, description.name());
builder.add(NarratedElementType.HINT, description.description().text());
}
}
public void setOptionDescription(DescriptionWithName description) {
this.description = description;
this.wrappedText = null;
this.targetScrollAmount = 0;
this.currentScrollAmount = 0;
this.lastInteractionTime = currentTimeMS();
}
private int currentTimeMS() {
return (int)(Blaze3D.getTime() * 1000);
}
@Nullable
@Override
public ComponentPath nextFocusPath(FocusNavigationEvent event) {
// prevents focusing on this widget
return null;
}
}
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