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Author: jessgrahamuq

fix_missing_ctx.py

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+#!/usr/bin/env python3
+"""
+Fix missing ctx by adding the proper DPI fix code before chart creation.
+"""
+
+import re
+from pathlib import Path
+
+def fix_missing_ctx(file_path):
+    """Add the DPI fix code before chart creation."""
+
+    with open(file_path, 'r', encoding='utf-8') as f:
+        content = f.read()
+
+    # The working DPI fix from exemplar
+    dpi_fix = '''
+        // Fix blurry canvas on high-DPI displays
+        const ctx = document.getElementById('severityChart').getContext('2d');
+        const dpr = window.devicePixelRatio || 1;
+        const canvas = document.getElementById('severityChart');
+        const rect = canvas.getBoundingClientRect();
+        canvas.width = rect.width * dpr;
+        canvas.height = rect.height * dpr;
+        ctx.scale(dpr, dpr);
+'''
+
+    # Find where chart is created and insert before it if ctx doesn't exist
+    if 'const chart = new Chart(ctx,' in content:
+        # Check if ctx is already defined before this
+        chart_pos = content.find('const chart = new Chart(ctx,')
+        before_chart = content[:chart_pos]
+
+        if 'const ctx = ' not in before_chart:
+            # Insert the DPI fix right before chart creation
+            # Find a good insertion point - after the mouseleave event listener
+            if 'chartCanvas.addEventListener(\'mouseleave\'' in before_chart:
+                # Insert after this event listener
+                pattern = r"(chartCanvas\.addEventListener\('mouseleave'[^}]+\}\);)\s*"
+                replacement = r"\1\n" + dpi_fix + "\n        "
+                content = re.sub(pattern, replacement, content)
+            else:
+                # Just insert before chart creation
+                content = content.replace(
+                    'const chart = new Chart(ctx,',
+                    dpi_fix + '\n        const chart = new Chart(ctx,'
+                )
+
+    # Write back
+    with open(file_path, 'w', encoding='utf-8') as f:
+        f.write(content)
+
+    print(f"Updated: {file_path.name}")
+
+
+def main():
+    """Process all severity chart files."""
+
+    # Find all BAU and PM severity charts
+    bau_charts = sorted(Path('.').glob('risk*_bau_chart.html'))
+    pm_charts = sorted(Path('.').glob('risk*_pm_chart.html'))
+
+    all_charts = bau_charts + pm_charts
+
+    if not all_charts:
+        print("No severity charts found!")
+        return
+
+    print(f"Found {len(all_charts)} severity charts")
+    print(f"Fixing missing ctx definitions...\n")
+
+    for chart_file in all_charts:
+        fix_missing_ctx(chart_file)
+
+    print(f"\nCompleted! Updated {len(all_charts)} files.")
+
+
+if __name__ == '__main__':
+    main()