t

websocket_server/test_font.py

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+import os
+
+FONT_FILE = "/Users/jeremygan/Desktop/python_dev/epaper2/websocket_server/GB2312-16.bin"
+
+def test_font():
+    if not os.path.exists(FONT_FILE):
+        print(f"Error: File not found at {FONT_FILE}")
+        return
+
+    file_size = os.path.getsize(FONT_FILE)
+    print(f"Font file size: {file_size} bytes")
+    
+    # Expected size for GB2312-16 (94x94 chars * 32 bytes)
+    expected_size = 94 * 94 * 32
+    print(f"Expected size: {expected_size} bytes")
+    
+    if file_size != expected_size:
+        print(f"Warning: File size mismatch! (Diff: {file_size - expected_size})")
+
+    # Try to render '中' (0xD6D0)
+    # Area: 0xD6 - 0xA0 = 54
+    # Index: 0xD0 - 0xA0 = 48
+    area = 0xD6 - 0xA0
+    index = 0xD0 - 0xA0
+    offset = ((area - 1) * 94 + (index - 1)) * 32
+    
+    print(f"Testing character '中' (0xD6D0)")
+    print(f"Area: {area}, Index: {index}, Offset: {offset}")
+    
+    with open(FONT_FILE, "rb") as f:
+        f.seek(offset)
+        data = f.read(32)
+        
+        if len(data) != 32:
+            print("Error: Could not read 32 bytes")
+            return
+            
+        print("Bitmap data:")
+        for i in range(16):
+            # Each row is 2 bytes (16 bits)
+            byte1 = data[i*2]
+            byte2 = data[i*2+1]
+            
+            # Print as bits
+            line = ""
+            for b in range(8):
+                if (byte1 >> (7-b)) & 1: line += "##"
+                else: line += ".."
+            for b in range(8):
+                if (byte2 >> (7-b)) & 1: line += "##"
+                else: line += ".."
+            print(line)
+
+if __name__ == "__main__":
+    test_font()