From b508c42debdb7be154e221204babd5b2e338928f Mon Sep 17 00:00:00 2001
From: Remizov Kirirll <woron0987654321@gmail.com>
Date: Tue, 4 Mar 2025 12:04:50 +0300
Subject: [PATCH] added inversion filter

---
 .../example/lab_1/ImageEditorController.java  | 42 ++++++++++++++++---
 1 file changed, 37 insertions(+), 5 deletions(-)

diff --git a/lab_1/src/main/java/org/example/lab_1/ImageEditorController.java b/lab_1/src/main/java/org/example/lab_1/ImageEditorController.java
index 78273cd..8b01110 100644
--- a/lab_1/src/main/java/org/example/lab_1/ImageEditorController.java
+++ b/lab_1/src/main/java/org/example/lab_1/ImageEditorController.java
@@ -3,6 +3,9 @@ package org.example.lab_1;
 import javafx.fxml.FXML;
 import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
+import javafx.scene.image.PixelReader;
+import javafx.scene.image.PixelWriter;
+import javafx.scene.image.WritableImage;
 import javafx.scene.control.ProgressBar;
 import javafx.stage.FileChooser;
 import javafx.stage.Stage;
@@ -16,7 +19,7 @@ public class ImageEditorController {
     private ProgressBar progressBar;
 
     public void initialize() {
-        // Устанавливаем изображение по умолчанию из URL
+        progressBar.setVisible(false);
         String imageUrl = "https://s0.rbk.ru/v6_top_pics/media/img/7/15/756775857541157.jpg";
         Image defaultImage = new Image(imageUrl);
         imageView.setImage(defaultImage);
@@ -32,14 +35,43 @@ public class ImageEditorController {
         if (selectedFile != null) {
             Image image = new Image(selectedFile.toURI().toString());
             imageView.setImage(image);
-        } else {
-            Image stImage = new Image("");
         }
     }
 
     public void applyInversionFilter() {
-        // Здесь будет логика для применения фильтра инверсии
-        // Пока просто выводим сообщение
+        progressBar.setVisible(true);
+        Image image = imageView.getImage();
+        if (image == null) return;
+
+        int width = (int) image.getWidth();
+        int height = (int) image.getHeight();
+
+        WritableImage invertedImage = new WritableImage(width, height);
+        PixelReader pixelReader = image.getPixelReader();
+        PixelWriter pixelWriter = invertedImage.getPixelWriter();
+
+        for (int y = 0; y < height; y++) {
+            for (int x = 0; x < width; x++) {
+                int argb = pixelReader.getArgb(x, y);
+
+                int a = (argb >> 24) & 0xFF;
+                int r = (argb >> 16) & 0xFF;
+                int g = (argb >> 8) & 0xFF;
+                int b = argb & 0xFF;
+
+                // Invert colors
+                r = 255 - r;
+                g = 255 - g;
+                b = 255 - b;
+
+                // Reassemble ARGB
+                int invertedArgb = (a << 24) | (r << 16) | (g << 8) | b;
+                pixelWriter.setArgb(x, y, invertedArgb);
+            }
+        }
+
+        imageView.setImage(invertedImage);
         System.out.println("Применен фильтр инверсии");
+        progressBar.setVisible(false);
     }
 }