changes

test_scaling.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python3
+"""
+Test script for full-screen image scaling functionality
+"""
+import tkinter as tk
+from PIL import Image, ImageTk
+import os
+
+def test_scaling_modes():
+    """Test different scaling modes for images"""
+    
+    def scale_image_to_screen(img, screen_width, screen_height, mode='fit'):
+        """Test scaling function"""
+        img_width, img_height = img.size
+        
+        if mode == 'stretch':
+            return img.resize((screen_width, screen_height), Image.LANCZOS), (0, 0)
+            
+        elif mode == 'fill':
+            screen_ratio = screen_width / screen_height
+            img_ratio = img_width / img_height
+            
+            if img_ratio > screen_ratio:
+                new_height = screen_height
+                new_width = int(screen_height * img_ratio)
+                x_offset = (screen_width - new_width) // 2
+                y_offset = 0
+            else:
+                new_width = screen_width
+                new_height = int(screen_width / img_ratio)
+                x_offset = 0
+                y_offset = (screen_height - new_height) // 2
+            
+            img_resized = img.resize((new_width, new_height), Image.LANCZOS)
+            final_img = Image.new('RGB', (screen_width, screen_height), 'black')
+            
+            if new_width > screen_width:
+                crop_x = (new_width - screen_width) // 2
+                img_resized = img_resized.crop((crop_x, 0, crop_x + screen_width, new_height))
+                x_offset = 0
+            if new_height > screen_height:
+                crop_y = (new_height - screen_height) // 2
+                img_resized = img_resized.crop((0, crop_y, new_width, crop_y + screen_height))
+                y_offset = 0
+                
+            final_img.paste(img_resized, (x_offset, y_offset))
+            return final_img, (x_offset, y_offset)
+            
+        else:  # fit mode
+            screen_ratio = screen_width / screen_height
+            img_ratio = img_width / img_height
+            
+            if img_ratio > screen_ratio:
+                new_width = screen_width
+                new_height = int(screen_width / img_ratio)
+            else:
+                new_height = screen_height
+                new_width = int(screen_height * img_ratio)
+            
+            img_resized = img.resize((new_width, new_height), Image.LANCZOS)
+            final_img = Image.new('RGB', (screen_width, screen_height), 'black')
+            x_offset = (screen_width - new_width) // 2
+            y_offset = (screen_height - new_height) // 2
+            final_img.paste(img_resized, (x_offset, y_offset))
+            
+            return final_img, (x_offset, y_offset)
+    
+    # Test image path
+    test_image = "/home/pi/Desktop/signage-player/tkinter_app/src/static/resurse/1307306470-nature_wallpaper_hd_hd_nature_3-3828209637.jpg"
+    
+    if not os.path.exists(test_image):
+        print(f"Test image not found: {test_image}")
+        return
+        
+    try:
+        # Load test image
+        img = Image.open(test_image)
+        original_size = img.size
+        screen_width, screen_height = 800, 600
+        
+        print(f"Testing scaling modes for image: {original_size}")
+        print(f"Target screen size: {screen_width}x{screen_height}")
+        
+        # Test each scaling mode
+        modes = ['fit', 'fill', 'stretch']
+        
+        for mode in modes:
+            final_img, offset = scale_image_to_screen(img, screen_width, screen_height, mode)
+            print(f"{mode.upper()} mode: Final size: {final_img.size}, Offset: {offset}")
+            
+        print("✅ All scaling modes tested successfully!")
+        
+    except Exception as e:
+        print(f"❌ Error testing scaling: {e}")
+
+if __name__ == "__main__":
+    test_scaling_modes()