smaller fonts

src/pages/data_collection.py

@@ -2122,7 +2122,7 @@ div.leaflet-container {background: #f2f2f3 !important;}
                 draw = ImageDraw.Draw(base_img)
                 # Smaller font for more compact display
                 BOX_FONT_SIZE = 20  # Smaller but still sharp text
-                LABEL_FONT_SIZE = 8  # Even smaller font for stream labels to prevent overlap
+                LABEL_FONT_SIZE = 6  # Very small font for stream labels
 
                 # Try common font paths for different platforms
                 font_paths = [
@@ -3038,7 +3038,7 @@ div.leaflet-container {background: #f2f2f3 !important;}
                 # Color rule: if Tin > Tout -> red (cooling stream), else blue (heating stream). Unknown -> gray.
                 # Labels now ONLY appear at top (Tin, ṁ, cp) and bottom (Tout, ṁ, cp) – nothing in the middle so arrows can be closer.
                 arrow_len_v = 45  # vertical arrow length above / below box
-                base_stream_spacing = 45  # Reduced spacing since labels are smaller now
+                base_stream_spacing = 35  # Even more reduced spacing
 
                 def _draw_v_arrow(draw_ctx, x_pos, y_from, y_to, head_at_end=True, color=(0,0,0,245), width=3):
                     """Draw vertical arrow from y_from to y_to at x_pos. If head_at_end True head at y_to else at y_from."""
@@ -3069,11 +3069,12 @@ div.leaflet-container {background: #f2f2f3 !important;}
                     if use_font and use_font != ImageFont.load_default():
                         # Only use font metrics if we have a real font (not the default)
                         tb = draw.textbbox((0,0), text_str, font=use_font)
-                        t_width = tb[2]-tb[0]; t_height = tb[3]-tb[1]
+                        t_width = min(tb[2]-tb[0], len(text_str) * 6)  # Cap width to prevent huge labels
+                        t_height = min(tb[3]-tb[1], 8)  # Cap height to prevent huge labels
                     else:
-                        # Conservative fallback sizing for when fonts fail
-                        t_width = len(text_str) * 4  # Even smaller fallback
-                        t_height = 6  # Smaller height fallback
+                        # Very conservative fallback sizing for when fonts fail
+                        t_width = len(text_str) * 3  # Much smaller fallback
+                        t_height = 5  # Much smaller height fallback
                     text_xc = int(x_center - t_width/2)
                     text_yc = int(y_baseline - (t_height if above else 0))
                     draw.rectangle([text_xc-1, text_yc-1, text_xc+t_width+1, text_yc+t_height+1], fill=(255,255,255,240))

src/pages/potential_analysis.py

@@ -285,7 +285,7 @@ def generate_subprocess_level_map(group_idx=None):
     
     # Load font - Cross-platform font loading
     BOX_FONT_SIZE = 20
-    LABEL_FONT_SIZE = 8  # Even smaller font for stream labels to prevent overlap
+    LABEL_FONT_SIZE = 6  # Very small font for stream labels
 
     # Try common font paths for different platforms
     font_paths = [
@@ -669,7 +669,7 @@ def generate_subprocess_level_map(group_idx=None):
     
     # Draw vertical stream arrows (Tin/Tout)
     arrow_len_v = 45
-    base_stream_spacing = 45  # Reduced spacing since labels are smaller now
+    base_stream_spacing = 35  # Even more reduced spacing
     
     def _draw_v_arrow(draw_ctx, x_pos, y_from, y_to, head_at_end=True, color=(0, 0, 0, 245), width=3):
         draw_ctx.line([(x_pos, y_from), (x_pos, y_to)], fill=color, width=width)
@@ -697,8 +697,8 @@ def generate_subprocess_level_map(group_idx=None):
         if use_font and use_font != ImageFont.load_default():
             # Only use font metrics if we have a real font (not the default)
             tb = draw.textbbox((0, 0), text_str, font=use_font)
-            t_width = tb[2] - tb[0]
-            t_height = tb[3] - tb[1]
+            t_width = min(tb[2] - tb[0], len(text_str) * 6)  # Cap width to prevent huge labels
+            t_height = min(tb[3] - tb[1], 8)  # Cap height to prevent huge labels
         else:
             # Very conservative fallback sizing for when fonts fail
             t_width = len(text_str) * 3  # Much smaller fallback