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<?php |
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// report_template_advanced.php |
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// This template expects $light_mode_bg_colors, $light_mode_fg_colors, $dark_mode_bg_colors, $dark_mode_fg_colors, and $contrast_method to be available from the calling context |
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if (!isset($light_mode_bg_colors) && !isset($dark_mode_bg_colors)) { |
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die('Error: No color data provided'); |
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} |
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|
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$current_method = $contrast_method ?? 'wcag'; |
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|
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// Helper function to render a results section |
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function renderResultsSection($bg_colors, $fg_colors, $current_method, $section_title) { |
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?> |
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<h2><?= htmlspecialchars($section_title) ?></h2> |
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<h3>Summary of Compatible Color Combinations (<?= $current_method === 'both' ? 'Both' : strtoupper($current_method) ?>)</h3> |
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<table class="checkered"> |
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<thead> |
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<tr> |
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<th>Background</th> |
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<?php if ($current_method === 'wcag'): ?> |
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<th>AAA ≥ 7.0<br>Best</th> |
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<th>AA Normal ≥ 4.5<br>Second Best</th> |
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<th>AA Large ≥ 3.0<br>Third Best</th> |
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<?php elseif ($current_method === 'apca'): ?> |
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<th>Perfect ≥ 90</th> |
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<th>Excellent ≥ 75</th> |
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<th>Good ≥ 60</th> |
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<th>Fair ≥ 45</th> |
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<?php else: // both ?> |
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<th>Perfect<br>WCAG ≥10 &<br>APCA ≥90</th> |
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<th>Excellent<br>WCAG ≥7 &<br>APCA ≥75</th> |
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<th>Good<br>WCAG ≥4.5 &<br>APCA ≥60</th> |
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<th>Fair<br>WCAG ≥3 &<br>APCA ≥45</th> |
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<?php endif; ?> |
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</tr> |
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</thead> |
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<tbody> |
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<?php foreach ($bg_colors as $bg_color => $bg): |
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// Calculate all combinations for this background color |
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$combinations = []; |
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foreach ($fg_colors as $fg_color => $fg) { |
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|
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if ($current_method === 'wcag') { |
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// Calculate luminance with alpha blending |
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$fg_lum = getLuminance($fg['rgb'], $fg['alpha'], $bg['rgb']); |
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$bg_lum = $bg['luminance']; |
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$contrast = getContrastRatio($bg_lum, $fg_lum); |
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$level = getWCAGLevel($contrast); |
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|
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if ($level !== 'Fail') { |
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$combinations[] = [ |
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'color' => $fg_color, |
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'contrast' => $contrast, |
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'level' => $level |
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]; |
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} |
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} elseif ($current_method === 'apca') { |
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// APCA calculations |
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$contrast = getAPCAContrast($bg['rgb'], $fg['rgb'], $bg['alpha'], $fg['alpha']); |
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$level = getAPCALevel($contrast); |
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|
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if (!str_contains($level, 'Fail')) { |
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$combinations[] = [ |
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'color' => $fg_color, |
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'contrast' => $contrast, |
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'level' => $level |
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]; |
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} |
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} else { // both |
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// Calculate both WCAG and APCA |
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$fg_lum = getLuminance($fg['rgb'], $fg['alpha'], $bg['rgb']); |
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$bg_lum = $bg['luminance']; |
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$wcag_contrast = getContrastRatio($bg_lum, $fg_lum); |
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$wcag_level = getWCAGLevel($wcag_contrast); |
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|
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$apca_contrast = getAPCAContrast($bg['rgb'], $fg['rgb'], $bg['alpha'], $fg['alpha']); |
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$apca_level = getAPCALevel($apca_contrast); |
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|
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$combined_level = getCombinedLevel($wcag_contrast, $apca_contrast); |
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|
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if ($combined_level !== 'Fail') { |
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$combinations[] = [ |
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'color' => $fg_color, |
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'wcag_contrast' => $wcag_contrast, |
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'apca_contrast' => $apca_contrast, |
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'level' => $combined_level |
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]; |
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} |
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} |
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} |
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|
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if ($current_method === 'wcag') { |
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// Group by WCAG level |
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$wcag_groups = [ |
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'AAA' => [], |
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'AA' => [], |
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'AA Large' => [] |
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]; |
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|
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foreach ($combinations as $combo) { |
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$wcag_groups[$combo['level']][] = $combo; |
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} |
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|
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// Sort each group by contrast ratio |
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foreach ($wcag_groups as &$group) { |
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usort($group, function($a, $b) { |
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return $b['contrast'] <=> $a['contrast']; |
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}); |
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} |
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|
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$has_valid_combinations = !empty($wcag_groups['AAA']) || |
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!empty($wcag_groups['AA']) || |
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!empty($wcag_groups['AA Large']); |
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} elseif ($current_method === 'apca') { |
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// Group by APCA level |
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$apca_groups = [ |
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'Perfect' => [], |
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'Excellent' => [], |
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'Good' => [], |
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'Fair' => [] |
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]; |
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|
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foreach ($combinations as $combo) { |
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$level_key = explode(' - ', $combo['level'])[0]; |
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if (isset($apca_groups[$level_key])) { |
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$apca_groups[$level_key][] = $combo; |
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} |
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} |
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|
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// Sort each group by absolute contrast value |
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foreach ($apca_groups as &$group) { |
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usort($group, function($a, $b) { |
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return abs($b['contrast']) <=> abs($a['contrast']); |
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}); |
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} |
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|
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$has_valid_combinations = !empty($apca_groups['Perfect']) || |
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!empty($apca_groups['Excellent']) || |
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!empty($apca_groups['Good']) || |
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!empty($apca_groups['Fair']); |
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} else { // both |
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// Group by combined level |
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$combined_groups = [ |
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'Perfect' => [], |
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'Excellent' => [], |
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'Good' => [], |
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'Fair' => [] |
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]; |
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|
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foreach ($combinations as $combo) { |
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if (isset($combined_groups[$combo['level']])) { |
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$combined_groups[$combo['level']][] = $combo; |
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} |
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} |
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|
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// Sort each group by WCAG contrast ratio |
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foreach ($combined_groups as &$group) { |
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usort($group, function($a, $b) { |
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return $b['wcag_contrast'] <=> $a['wcag_contrast']; |
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}); |
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} |
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|
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$has_valid_combinations = !empty($combined_groups['Perfect']) || |
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!empty($combined_groups['Excellent']) || |
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!empty($combined_groups['Good']) || |
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!empty($combined_groups['Fair']); |
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} |
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?> |
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<tr style="background-color: <?= htmlspecialchars(getCssColor($bg_color)) ?>;"> |
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<td> |
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<?php |
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// Use alpha-aware luminance for text color calculation |
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$bg_text_lum = getLuminance($bg['rgb'], $bg['alpha']); ?> |
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<span style="color: <?= $bg_text_lum > 0.5 ? '#000000' : '#FFFFFF' ?>"> |
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<?= htmlspecialchars(getCleanColorName($bg_color)) ?> |
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</span> |
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</td> |
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<?php if ($has_valid_combinations): ?> |
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<?php if ($current_method === 'wcag'): ?> |
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<?php foreach (['AAA', 'AA', 'AA Large'] as $level): ?> |
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<td><?php foreach ($wcag_groups[$level] as $combo): ?> |
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<div style="color: <?= htmlspecialchars(getCssColor($combo['color'])) ?>;"><?= htmlspecialchars($combo['color']) ?> (Ratio: <?= number_format($combo['contrast'], 2) ?>)</div> |
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<?php endforeach; ?></td> |
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<?php endforeach; ?> |
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<?php elseif ($current_method === 'apca'): ?> |
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<?php foreach (['Perfect', 'Excellent', 'Good', 'Fair'] as $level): ?> |
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<td><?php foreach ($apca_groups[$level] as $combo): ?> |
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<div style="color: <?= htmlspecialchars(getCssColor($combo['color'])) ?>;"><?= htmlspecialchars($combo['color']) ?> (Lc: <?= number_format($combo['contrast'], 1) ?>)</div> |
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<?php endforeach; ?></td> |
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<?php endforeach; ?> |
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<?php else: // both ?> |
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<?php foreach (['Perfect', 'Excellent', 'Good', 'Fair'] as $level): ?> |
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<td><?php foreach ($combined_groups[$level] as $combo): ?> |
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<div style="color: <?= htmlspecialchars(getCssColor($combo['color'])) ?>;"><?= htmlspecialchars($combo['color']) ?> (<?= number_format($combo['wcag_contrast'], 2) ?>) (Lc <?= number_format($combo['apca_contrast'], 1) ?>)</div> |
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<?php endforeach; ?></td> |
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<?php endforeach; ?> |
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<?php endif; ?> |
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<?php else: ?> |
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<td colspan="<?= $current_method === 'wcag' ? '3' : '4' ?>" style="text-align: center; color: <?= $bg_text_lum > 0.5 ? '#000000' : '#FFFFFF' ?>"> |
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<?php if ($current_method === 'wcag'): ?> |
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No valid color combinations found (all contrast ratios below 3.0) |
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<?php elseif ($current_method === 'apca'): ?> |
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No valid color combinations found (all APCA values below 45) |
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<?php else: ?> |
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No valid color combinations found (failed both WCAG and APCA thresholds) |
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<?php endif; ?> |
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</td> |
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<?php endif; ?> |
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</tr> |
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<?php endforeach; ?> |
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</tbody> |
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</table> |
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|
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<h3>Complete Contrast Grid (<?= $current_method === 'both' ? 'Both' : strtoupper($current_method) ?>)</h3> |
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<table class="checkered"> |
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<tr> |
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<th>BG \ FG</th> |
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<?php foreach ($fg_colors as $color => $data): ?> |
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<th><?= htmlspecialchars(getCleanColorName($color)) ?></th> |
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<?php endforeach; ?> |
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</tr> |
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<?php foreach ($bg_colors as $bg_color => $bg_data): ?> |
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<tr> |
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<th><?= htmlspecialchars(getCleanColorName($bg_color)) ?></th> |
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<?php foreach ($fg_colors as $fg_color => $fg_data): |
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if ($current_method === 'wcag') { |
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// Calculate luminance with alpha blending |
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$fg_lum = getLuminance($fg_data['rgb'], $fg_data['alpha'], $bg_data['rgb']); |
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$bg_lum = $bg_data['luminance']; |
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$contrast = getContrastRatio($bg_lum, $fg_lum); |
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$level = getWCAGLevel($contrast); |
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$display_value = number_format($contrast, 2); |
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} elseif ($current_method === 'apca') { |
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// APCA calculations |
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$contrast = getAPCAContrast($bg_data['rgb'], $fg_data['rgb'], $bg_data['alpha'], $fg_data['alpha']); |
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$level = getAPCALevel($contrast); |
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$display_value = number_format($contrast, 1); |
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} else { // both |
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// Calculate both WCAG and APCA |
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$fg_lum = getLuminance($fg_data['rgb'], $fg_data['alpha'], $bg_data['rgb']); |
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$bg_lum = $bg_data['luminance']; |
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$wcag_contrast = getContrastRatio($bg_lum, $fg_lum); |
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$wcag_level = getWCAGLevel($wcag_contrast); |
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|
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$apca_contrast = getAPCAContrast($bg_data['rgb'], $fg_data['rgb'], $bg_data['alpha'], $fg_data['alpha']); |
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$apca_level = getAPCALevel($apca_contrast); |
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|
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$combined_level = getCombinedLevel($wcag_contrast, $apca_contrast); |
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} |
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?> |
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<td style="background-color: <?= htmlspecialchars(getCssColor($bg_color)) ?>;"> |
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<div class="sample-text" style="color: <?= htmlspecialchars(getCssColor($fg_color)) ?>;"> |
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Sample |
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<div style="font-size: 0.8em;"> |
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<?php if ($current_method === 'wcag'): ?> |
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<?= $display_value ?><br><?= $level ?> |
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<?php elseif ($current_method === 'apca'): ?> |
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Lc <?= $display_value ?><br><?= explode(' - ', $level)[0] ?> |
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<?php else: // both ?> |
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(<?= number_format($wcag_contrast, 2) ?>) (Lc <?= number_format($apca_contrast, 1) ?>)<br><?= $combined_level ?> |
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<?php endif; ?> |
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</div> |
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</div> |
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</td> |
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<?php endforeach; ?> |
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</tr> |
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<?php endforeach; ?> |
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</table> |
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<?php |
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} |
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?> |
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<!DOCTYPE html> |
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<html lang="en"> |
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<head> |
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<meta charset="UTF-8"> |
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<meta name="viewport" content="width=device-width, initial-scale=1.0"> |
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<title>Jeff's Color Contrast Analyzer Report - Advanced Mode (<?= $current_method === 'both' ? 'Both' : strtoupper($current_method) ?>) - <?= date('Y-m-d H:i:s') ?></title> |
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<style> |
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:root { color-scheme: light dark; } |
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body { font-family: Arial, sans-serif; margin: 20px; } |
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table { border-collapse: collapse; margin: 20px 0; } |
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th, td { border: 1px solid #000; padding: 8px; text-align: left; vertical-align: top; } |
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td div { padding: 0 0.5em 0.5em 0; } |
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.checkered { background: conic-gradient(hsla(0, 0%, 50%, 20%) 90deg, transparent 90deg 180deg, hsla(0, 0%, 50%, 20%) 180deg 270deg, transparent 270deg); background-repeat: repeat; background-size: 40px 40px; } |
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.footer { padding-top: 1em; } |
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</style> |
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</head> |
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<body> |
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<h1>Jeff's Color Contrast Analyzer - Advanced Mode Report</h1> |
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<p>Generated on: <?= date('Y-m-d H:i:s T') ?> from <a href="https://contrast.jefftml.com/">contrast.jefftml.com</a></p> |
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|
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<?php if (!empty($light_mode_bg_colors)): ?> |
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<?php renderResultsSection($light_mode_bg_colors, $light_mode_fg_colors ?? [], $current_method, 'Light Mode Results'); ?> |
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<?php endif; ?> |
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|
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<?php if (!empty($dark_mode_bg_colors)): ?> |
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<?php renderResultsSection($dark_mode_bg_colors, $dark_mode_fg_colors ?? [], $current_method, 'Dark Mode Results'); ?> |
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<?php endif; ?> |
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|
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<div class="footer"> |
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<?php echo getCopyrightYears(2024); ?> |
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</div> |
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</body> |
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</html> |
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|