Image HUD element.

src/main/java/meteordevelopment/meteorclient/systems/hud/Hud.java

@@ -129,6 +129,7 @@ public void init() {
         register(ModuleInfosHud.INFO);
         register(PotionTimersHud.INFO);
         register(CombatHud.INFO);
+        register(ImageHud.INFO);
 
         // Default config
         if (isFirstInit) resetToDefaultElements();

src/main/java/meteordevelopment/meteorclient/systems/hud/HudRenderer.java

@@ -12,6 +12,7 @@
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import meteordevelopment.meteorclient.MeteorClient;
 import meteordevelopment.meteorclient.events.meteor.CustomFontChangedEvent;
+import meteordevelopment.meteorclient.gui.renderer.packer.TextureRegion;
 import meteordevelopment.meteorclient.renderer.*;
 import meteordevelopment.meteorclient.renderer.text.CustomTextRenderer;
 import meteordevelopment.meteorclient.renderer.text.Font;
@@ -135,6 +136,18 @@ public void texture(Identifier id, double x, double y, double width, double heig
         Renderer2D.TEXTURE.render(mc.getTextureManager().getTexture(id).getGlTextureView());
     }
 
+    public void texture(Identifier id, double x, double y, double width, double height, TextureRegion textureRegion, Color color, float scale) {
+        Renderer2D.TEXTURE.begin();
+        Renderer2D.TEXTURE.texQuad(x, y, width * scale, height * scale, textureRegion, color);
+        Renderer2D.TEXTURE.render(mc.getTextureManager().getTexture(id).getGlTextureView());
+    }
+
+    public void texture(Identifier id, double x, double y, double width, double height, Color color, float scale) {
+        Renderer2D.TEXTURE.begin();
+        Renderer2D.TEXTURE.texQuad(x, y, width * scale, height * scale, color);
+        Renderer2D.TEXTURE.render(mc.getTextureManager().getTexture(id).getGlTextureView());
+    }
+
     public double text(String text, double x, double y, Color color, boolean shadow, double scale) {
         if (scale == -1) scale = hud.getTextScale();
 

src/main/java/meteordevelopment/meteorclient/systems/hud/elements/ImageHud.java

@@ -0,0 +1,154 @@
+/*
+ * This file is part of the Meteor Client distribution (https://github.com/MeteorDevelopment/meteor-client).
+ * Copyright (c) Meteor Development.
+ */
+
+package meteordevelopment.meteorclient.systems.hud.elements;
+
+import meteordevelopment.meteorclient.gui.renderer.packer.TextureRegion;
+import meteordevelopment.meteorclient.settings.DoubleSetting;
+import meteordevelopment.meteorclient.settings.Setting;
+import meteordevelopment.meteorclient.settings.SettingGroup;
+import meteordevelopment.meteorclient.settings.StringSetting;
+import meteordevelopment.meteorclient.systems.hud.Hud;
+import meteordevelopment.meteorclient.systems.hud.HudElement;
+import meteordevelopment.meteorclient.systems.hud.HudElementInfo;
+import meteordevelopment.meteorclient.systems.hud.HudRenderer;
+import meteordevelopment.meteorclient.utils.misc.texture.ImageData;
+import meteordevelopment.meteorclient.utils.misc.texture.ImageDataFactory;
+import meteordevelopment.meteorclient.utils.misc.texture.TextureUtils;
+import meteordevelopment.meteorclient.utils.render.color.Color;
+import net.minecraft.util.Identifier;
+
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReader;
+import javax.imageio.stream.ImageInputStream;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import static meteordevelopment.meteorclient.MeteorClient.*;
+import static meteordevelopment.meteorclient.utils.misc.texture.TextureUtils.getCurrentAnimationFrame;
+import static meteordevelopment.meteorclient.utils.misc.texture.TextureUtils.registerTexture;
+import static org.lwjgl.opengl.GL11C.GL_MAX_TEXTURE_SIZE;
+import static org.lwjgl.opengl.GL11C.glGetInteger;
+
+public class ImageHud extends HudElement {
+    public static final HudElementInfo<ImageHud> INFO = new HudElementInfo<>(Hud.GROUP, "image", "Cures your ADHD.", ImageHud::new);
+    public static final int MAX_TEX_SIZE = glGetInteger(GL_MAX_TEXTURE_SIZE);
+    private static final Identifier DEFAULT_TEXTURE = Identifier.of(MOD_ID,"textures/icons/gui/default_image.png");
+    private static final Identifier LOADING_TEXTURE = Identifier.of(MOD_ID,"textures/icons/gui/loading_image.png");
+    private static final Color TRANSPARENT = new Color(255, 255, 255, 255);
+    private Identifier texture;
+    private final ExecutorService worker = Executors.newSingleThreadExecutor();
+    private ImageData cachedImageData;
+    private CompletableFuture<Void> currentImageDataFuture;
+
+    private final SettingGroup sgGeneral = settings.getDefaultGroup();
+
+    public ImageHud() {
+        super(INFO);
+        setSize(128,128);
+    }
+
+    private final Setting<String> path = sgGeneral.add(new StringSetting.Builder()
+        .name("Path")
+        .description("The full path / link of the image")
+        .wide()
+        .onChanged(this::composeImage)
+        .build()
+    );
+
+    public final Setting<Double> scale = sgGeneral.add(new DoubleSetting.Builder()
+        .name("scale")
+        .description("Custom scale.")
+        .defaultValue(1)
+        .min(0.1)
+        .sliderRange(0.5, 2)
+        .max(10)
+        .onChanged(sc -> {
+            if (cachedImageData != null) {
+                setSize(cachedImageData.width * sc, cachedImageData.height * sc);
+            }
+        })
+        .build()
+    );
+
+    /**
+     * Composes the image asynchronously, since it can be a very slow process for animated images or big ones.
+     * @param path the URI in String format.
+     */
+    private void composeImage(String path) {
+        // Cancel the future immediately to recreate another texture for the user.
+        if (currentImageDataFuture != null && !currentImageDataFuture.isDone()) {
+            currentImageDataFuture.cancel(true);
+        }
+        // Parse URI
+        String parsed = path.replace("\"", "").replace("\\", "/");
+        String name = parsed.substring(parsed.lastIndexOf("/") + 1);
+        cachedImageData = null;
+
+        currentImageDataFuture = CompletableFuture.supplyAsync(() -> {
+            try {
+                InputStream imageFile = path.startsWith("http") ? new URL(path).openStream() : new FileInputStream(parsed);
+                ImageInputStream stream = ImageIO.createImageInputStream(imageFile);
+                ImageReader reader = ImageIO.getImageReaders(stream).next();
+                reader.setInput(stream);
+                if (reader.getFormatName().equals("gif")) {
+                    return ImageDataFactory.fromGIF(name, reader);
+                } else {
+                    return ImageDataFactory.fromStatic(name, reader);
+                }
+            } catch (Exception e) {
+                LOG.debug("Failed to load image", e);
+                texture = null;
+                return null;
+            }
+        }, worker).thenAcceptAsync(data -> {
+            if (data != null) {
+                if (texture != null) mc.getTextureManager().destroyTexture(texture);
+                texture = registerTexture(data);
+                setSize(data.width * scale.get(), data.height * scale.get());
+                cachedImageData = data;
+            }
+        },mc);
+    }
+
+    @Override
+    public void render(HudRenderer renderer) {
+        if (currentImageDataFuture != null && !currentImageDataFuture.isDone()) {
+            renderer.texture(LOADING_TEXTURE, getX(), getY(), 128, 128, TRANSPARENT, scale.get().floatValue());
+        }
+        else if (cachedImageData == null || texture == null) {
+            renderer.texture(DEFAULT_TEXTURE,getX(),getY(),128,128,TRANSPARENT,scale.get().floatValue());
+        }
+        else {
+            try {
+                if (cachedImageData.delays.isEmpty()){
+                    renderer.texture(texture, getX(), getY(), cachedImageData.width, cachedImageData.height, TRANSPARENT, scale.get().floatValue());
+                } else {
+                    renderGif(renderer, cachedImageData, texture, x, y, scale.get().floatValue());
+                }
+            } catch (Exception e) {
+                LOG.debug("Failed to render image", e);
+            }
+        }
+    }
+
+    public static void renderGif(HudRenderer renderer, ImageData imageData, Identifier texture, int x, int y, float scale) {
+        int frameIndex = getCurrentAnimationFrame(imageData.delays);
+        int row = frameIndex % imageData.framesPerColumn;
+        int column = frameIndex / imageData.framesPerColumn;
+        TextureRegion textureRegion = new TextureRegion(imageData.width,imageData.height);
+
+        textureRegion.x1 = (float) (column * imageData.width) / imageData.canvasWidth;
+        textureRegion.y1 = (float) (row * imageData.height) / imageData.canvasHeight;
+        textureRegion.x2 = (float) ((column + 1) * imageData.width) / imageData.canvasWidth;
+        textureRegion.y2 = (float) ((row + 1) * imageData.height) / imageData.canvasHeight;
+
+        renderer.texture(texture,x,y,imageData.width,imageData.height,textureRegion,TRANSPARENT,scale);
+    }
+}

src/main/java/meteordevelopment/meteorclient/utils/misc/texture/FrameMetadata.java

@@ -0,0 +1,11 @@
+/*
+ * This file is part of the Meteor Client distribution (https://github.com/MeteorDevelopment/meteor-client).
+ * Copyright (c) Meteor Development.
+ */
+
+package meteordevelopment.meteorclient.utils.misc.texture;
+
+import java.awt.*;
+
+public record FrameMetadata(int delay, String disposal, Offset offset, Color backgroundColor) {
+}

src/main/java/meteordevelopment/meteorclient/utils/misc/texture/FrameMetadataFactory.java

@@ -0,0 +1,65 @@
+/*
+ * This file is part of the Meteor Client distribution (https://github.com/MeteorDevelopment/meteor-client).
+ * Copyright (c) Meteor Development.
+ */
+
+package meteordevelopment.meteorclient.utils.misc.texture;
+
+import org.jetbrains.annotations.NotNull;
+import org.w3c.dom.NodeList;
+
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.metadata.IIOMetadataNode;
+import java.awt.*;
+
+public class FrameMetadataFactory {
+    /**
+     * Factory pattern to get the FrameMetadata object to compose a GIF. This factory can be extended in the future in case
+     * we want other animated formats like APNG or WEBP. (Not that Oracle's jdk supports them yet).
+     * @param metadata the GIF's IIOMetadata object from the image reader.
+     *                 It effectively contains all the metadata from a GIF frame.
+     * @return FrameMetadata.
+     */
+    public static FrameMetadata fromGIF(IIOMetadata metadata) {
+        IIOMetadataNode root = (IIOMetadataNode) metadata.getAsTree(metadata.getNativeMetadataFormatName());
+        IIOMetadataNode gce = (IIOMetadataNode) root.getElementsByTagName("GraphicControlExtension").item(0);
+        IIOMetadataNode desc = (IIOMetadataNode) root.getElementsByTagName("ImageDescriptor").item(0);
+        int delay = Integer.parseInt(gce.getAttribute("delayTime"));
+        String disposal = gce.getAttribute("disposalMethod");
+        int topPos = Integer.parseInt(desc.getAttribute("imageTopPosition"));
+        int leftPos = Integer.parseInt(desc.getAttribute("imageLeftPosition"));
+        if (disposal.equals("restoreToBackground")) return new FrameMetadata(delay, disposal, new Offset(leftPos,topPos), getBgColor(root));
+        return new FrameMetadata(delay, disposal, new Offset(leftPos,topPos), new Color(0,0,0));
+    }
+
+    /**
+     * Gets the background color from a GIF's metadata. Needs to locate the index of the color in the LogicalScreenDescriptor
+     * and search it inside the ColorTableEntry list in the GlobalColorTable.
+     * @param root a IIOMetadataNode object (root) from the IIOMetadata.
+     * @return Color.
+     */
+    private static java.awt.Color getBgColor(IIOMetadataNode root) {
+        IIOMetadataNode lsd = (IIOMetadataNode) root.getElementsByTagName("LogicalScreenDescriptor").item(0); // LOL
+        IIOMetadataNode gct =  (IIOMetadataNode) root.getElementsByTagName("GlobalColorTable").item(0);
+        int bgcIndex = Integer.parseInt(lsd.getAttribute("backgroundColorIndex"));
+        return getBgColor(gct, bgcIndex);
+    }
+
+    private static @NotNull java.awt.Color getBgColor(IIOMetadataNode gct, int bgcIndex) {
+        java.awt.Color bgColor = new java.awt.Color(0,0,0);
+        if (gct != null) {
+            NodeList colorEntries = gct.getElementsByTagName("ColorTableEntry");
+            for (int i = 0; i < colorEntries.getLength(); i++) {
+                IIOMetadataNode colorEntry = (IIOMetadataNode) colorEntries.item(i);
+                int colorIndex = Integer.parseInt(colorEntry.getAttribute("index"));
+                if (colorIndex == bgcIndex) {
+                    bgColor = new java.awt.Color(Integer.parseInt(colorEntry.getAttribute("red")),
+                        Integer.parseInt(colorEntry.getAttribute("green")),
+                        Integer.parseInt(colorEntry.getAttribute("blue")));
+                }
+            }
+        }
+        return bgColor;
+    }
+
+}

src/main/java/meteordevelopment/meteorclient/utils/misc/texture/ImageData.java

@@ -0,0 +1,30 @@
+/*
+ * This file is part of the Meteor Client distribution (https://github.com/MeteorDevelopment/meteor-client).
+ * Copyright (c) Meteor Development.
+ */
+
+package meteordevelopment.meteorclient.utils.misc.texture;
+
+import net.minecraft.client.texture.NativeImage;
+
+import java.util.List;
+
+public class ImageData {
+    String name;
+    NativeImage texture;
+    public int width;
+    public int height;
+    public int canvasWidth;
+    public int canvasHeight;
+    public int framesPerColumn;
+    int totalFrames;
+    public List<Integer> delays;
+
+    public ImageData(String name) {
+        this.name = name;
+    }
+
+    public int getColumns(){
+        return (int) Math.ceil(totalFrames / (double) framesPerColumn);
+    }
+}