updating scroll direction

orienting scroll direction

src/news_manager.py

@@ -174,7 +174,8 @@ class NewsManager:
         frame_image = Image.new('RGB', (self.display_manager.matrix.width, self.display_manager.matrix.height), (0, 0, 0))
         
         # Calculate the source and destination regions for the visible portion
-        src_x = max(0, text_width - self.scroll_position - visible_width)
+        # For left-to-right scrolling, we start from the left side of the text
+        src_x = self.scroll_position
         src_width = min(visible_width, text_width - src_x)
         
         # Copy the visible portion of the text to the frame
@@ -183,7 +184,7 @@ class NewsManager:
             frame_image.paste(src_region, (0, 0))
         
         # If we need to wrap around to the beginning of the text
-        if src_x == 0 and self.scroll_position > text_width:
+        if src_x + src_width >= text_width:
             remaining_width = self.display_manager.matrix.width - src_width
             if remaining_width > 0:
                 wrap_src_width = min(remaining_width, text_width)

test_scroll_direction.py

@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+import time
+import sys
+import os
+from src.config_manager import ConfigManager
+from src.display_manager import DisplayManager
+from src.news_manager import NewsManager
+
+def main():
+    """Test the scrolling direction of the news ticker."""
+    try:
+        # Load configuration
+        config_manager = ConfigManager()
+        config = config_manager.load_config()
+        
+        # Initialize display manager
+        display_manager = DisplayManager(config.get('display', {}))
+        
+        # Initialize news manager
+        news_manager = NewsManager(config, display_manager)
+        
+        print("Starting scroll direction test...")
+        print("This test will display a simple text message scrolling from left to right")
+        print("Press Ctrl+C to exit")
+        
+        # Create a simple test message
+        test_message = "TEST MESSAGE - This is a test of scrolling direction"
+        
+        # Create a text image for the test message
+        text_image = news_manager._create_text_image(test_message)
+        text_width = text_image.width
+        
+        # Clear the display
+        display_manager.clear()
+        display_manager.update_display()
+        
+        # Test scrolling from left to right
+        scroll_position = 0
+        while True:
+            # Create a new frame
+            frame_image = display_manager.create_blank_image()
+            
+            # Calculate the visible portion
+            visible_width = min(display_manager.matrix.width, text_width)
+            src_x = scroll_position
+            src_width = min(visible_width, text_width - src_x)
+            
+            # Copy the visible portion
+            if src_width > 0:
+                src_region = text_image.crop((src_x, 0, src_x + src_width, display_manager.matrix.height))
+                frame_image.paste(src_region, (0, 0))
+            
+            # Handle wrapping
+            if src_x + src_width >= text_width:
+                remaining_width = display_manager.matrix.width - src_width
+                if remaining_width > 0:
+                    wrap_src_width = min(remaining_width, text_width)
+                    wrap_region = text_image.crop((0, 0, wrap_src_width, display_manager.matrix.height))
+                    frame_image.paste(wrap_region, (src_width, 0))
+            
+            # Update the display
+            display_manager.image = frame_image
+            display_manager.draw = display_manager.create_draw_object()
+            display_manager.update_display()
+            
+            # Update scroll position
+            scroll_position += 1
+            
+            # Reset when we've scrolled past the end
+            if scroll_position > text_width + display_manager.matrix.width:
+                scroll_position = 0
+                time.sleep(1)  # Pause briefly before restarting
+            
+            time.sleep(0.05)  # Control scroll speed
+            
+    except KeyboardInterrupt:
+        print("\nTest interrupted by user")
+    except Exception as e:
+        print(f"Error during test: {e}")
+    finally:
+        # Clean up
+        display_manager.clear()
+        display_manager.update_display()
+        print("Test completed")
+
+if __name__ == "__main__":
+    main()