Redesign stock display: Add scrolling animation with logo, symbol, mini chart, and stacked price info

src/stock_manager.py

@@ -8,6 +8,7 @@ from datetime import datetime
 import os
 import urllib.parse
 import re
+from PIL import Image, ImageDraw
 
 # Configure logging
 logging.basicConfig(level=logging.INFO)
@@ -21,7 +22,20 @@ class StockManager:
         self.last_update = 0
         self.stock_data = {}
         self.current_stock_index = 0
-        self.display_mode = 'info'  # 'info' or 'chart'
+        self.scroll_position = 0
+        self.cached_text_image = None
+        self.cached_text = None
+        
+        # Get scroll settings from config with faster defaults
+        self.scroll_speed = self.stocks_config.get('scroll_speed', 1)
+        self.scroll_delay = self.stocks_config.get('scroll_delay', 0.001)
+        
+        # Initialize frame rate tracking
+        self.frame_count = 0
+        self.last_frame_time = time.time()
+        self.last_fps_log_time = time.time()
+        self.frame_times = []
+        
         self.headers = {
             'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'
         }
@@ -275,8 +289,105 @@ class StockManager:
         else:
             logger.error("Failed to fetch data for any configured stocks")
 
+    def _create_stock_display(self, symbol: str, data: Dict[str, Any]) -> Image.Image:
+        """Create an image containing the stock information for efficient scrolling."""
+        width = self.display_manager.matrix.width
+        height = self.display_manager.matrix.height
+        
+        # Create a new image with black background
+        display_image = Image.new('RGB', (width, height), (0, 0, 0))
+        draw = ImageDraw.Draw(display_image)
+        
+        # Get stock color
+        color = self._get_stock_color(symbol)
+        
+        # Draw stock logo (placeholder for now - we'll use a simple icon)
+        logo_text = "📈" if data.get('change', 0) >= 0 else "📉"
+        bbox = draw.textbbox((0, 0), logo_text, font=self.display_manager.small_font)
+        logo_width = bbox[2] - bbox[0]
+        logo_height = bbox[3] - bbox[1]
+        logo_y = (height - logo_height) // 2
+        draw.text((2, logo_y), logo_text, font=self.display_manager.small_font, fill=color)
+        
+        # Draw symbol
+        symbol_text = symbol
+        bbox = draw.textbbox((0, 0), symbol_text, font=self.display_manager.small_font)
+        symbol_width = bbox[2] - bbox[0]
+        symbol_height = bbox[3] - bbox[1]
+        symbol_x = (width - symbol_width) // 2
+        symbol_y = (height - symbol_height) // 2
+        draw.text((symbol_x, symbol_y), symbol_text, font=self.display_manager.small_font, fill=(255, 255, 255))
+        
+        # Draw mini chart
+        if data.get('price_history'):
+            chart_width = width // 4
+            chart_height = height // 3
+            chart_x = width - chart_width - 2
+            chart_y = (height - chart_height) // 2
+            
+            # Get price data for chart
+            prices = [p['price'] for p in data['price_history']]
+            if prices:
+                min_price = min(prices)
+                max_price = max(prices)
+                price_range = max_price - min_price
+                
+                if price_range > 0:
+                    points = []
+                    for i, price in enumerate(prices):
+                        x = chart_x + int((i / len(prices)) * chart_width)
+                        y = chart_y + chart_height - int(((price - min_price) / price_range) * chart_height)
+                        points.append((x, y))
+                    
+                    # Draw lines between points
+                    for i in range(len(points) - 1):
+                        draw.line([points[i], points[i + 1]], fill=color, width=1)
+        
+        # Draw price and change below
+        price_text = f"${data['price']:.2f}"
+        change_text = f"({data['change']:+.1f}%)"
+        
+        # Draw price
+        bbox = draw.textbbox((0, 0), price_text, font=self.display_manager.small_font)
+        price_width = bbox[2] - bbox[0]
+        price_x = (width - price_width) // 2
+        draw.text((price_x, height - 20), price_text, font=self.display_manager.small_font, fill=color)
+        
+        # Draw change
+        bbox = draw.textbbox((0, 0), change_text, font=self.display_manager.small_font)
+        change_width = bbox[2] - bbox[0]
+        change_x = (width - change_width) // 2
+        draw.text((change_x, height - 10), change_text, font=self.display_manager.small_font, fill=color)
+        
+        return display_image
+
+    def _log_frame_rate(self):
+        """Log frame rate statistics."""
+        current_time = time.time()
+        
+        # Calculate instantaneous frame time
+        frame_time = current_time - self.last_frame_time
+        self.frame_times.append(frame_time)
+        
+        # Keep only last 100 frames for average
+        if len(self.frame_times) > 100:
+            self.frame_times.pop(0)
+        
+        # Log FPS every second
+        if current_time - self.last_fps_log_time >= 1.0:
+            avg_frame_time = sum(self.frame_times) / len(self.frame_times)
+            avg_fps = 1.0 / avg_frame_time if avg_frame_time > 0 else 0
+            instant_fps = 1.0 / frame_time if frame_time > 0 else 0
+            
+            logger.info(f"Frame stats - Avg FPS: {avg_fps:.1f}, Current FPS: {instant_fps:.1f}, Frame time: {frame_time*1000:.2f}ms")
+            self.last_fps_log_time = current_time
+            self.frame_count = 0
+        
+        self.last_frame_time = current_time
+        self.frame_count += 1
+
     def display_stocks(self, force_clear: bool = False):
-        """Display stock information on the LED matrix."""
+        """Display stock information with scrolling animation."""
         if not self.stocks_config.get('enabled', False):
             return
             
@@ -296,51 +407,31 @@ class StockManager:
         current_symbol = symbols[self.current_stock_index]
         data = self.stock_data[current_symbol]
         
-        # Toggle between info and chart display
-        if self.display_mode == 'info':
-            # Clear the display
+        # Create the display image if needed
+        if self.cached_text_image is None or self.cached_text != current_symbol:
+            self.cached_text_image = self._create_stock_display(current_symbol, data)
+            self.cached_text = current_symbol
+        
+        # Clear the display if requested
+        if force_clear:
             self.display_manager.clear()
-            
-            # Draw the stock symbol at the top with regular font
-            self.display_manager.draw_text(
-                data['symbol'],
-                y=2,  # Near top
-                color=(255, 255, 255)  # White for symbol
-            )
-            
-            # Draw the price in the middle with small font
-            price_text = f"${data['price']:.2f}"
-            self.display_manager.draw_text(
-                price_text,
-                y=14,  # Middle
-                color=(0, 255, 0) if data['change'] >= 0 else (255, 0, 0),  # Green for up, red for down
-                small_font=True  # Use small font
-            )
-            
-            # Draw the change percentage at the bottom with small font
-            change_text = f"({data['change']:+.1f}%)"
-            self.display_manager.draw_text(
-                change_text,
-                y=24,  # Near bottom
-                color=(0, 255, 0) if data['change'] >= 0 else (255, 0, 0),  # Green for up, red for down
-                small_font=True  # Use small font
-            )
-            
-            # Update the display
-            self.display_manager.update_display()
-            
-            # Switch to chart mode next time
-            self.display_mode = 'chart'
-        else:  # chart mode
-            self._draw_chart(current_symbol, data)
-            # Switch back to info mode next time
-            self.display_mode = 'info'
+            self.scroll_position = 0
         
-        # Add a delay to make each display visible
-        time.sleep(3)
+        # Copy the cached image to the display
+        self.display_manager.image.paste(self.cached_text_image, (0, 0))
+        self.display_manager.update_display()
         
-        # Move to next stock for next update
-        self.current_stock_index = (self.current_stock_index + 1) % len(symbols)
+        # Log frame rate
+        self._log_frame_rate()
+        
+        # Add a small delay between frames
+        time.sleep(self.scroll_delay)
+        
+        # Move to next stock after a delay
+        if time.time() - self.last_update > 5:  # Show each stock for 5 seconds
+            self.current_stock_index = (self.current_stock_index + 1) % len(symbols)
+            self.last_update = time.time()
+            self.cached_text_image = None  # Force recreation of display for next stock
         
         # If we've shown all stocks, signal completion by returning True
         return self.current_stock_index == 0