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Add a font

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Tim Zöller 2026-01-05 11:07:15 +01:00
parent 4b166c0637
commit 1e833d52b6
2 changed files with 33 additions and 4 deletions
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6
Dockerfile
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@ -22,9 +22,11 @@ FROM eclipse-temurin:17-jre-jammy
WORKDIR /app WORKDIR /app
# Install curl for healthcheck # Install curl for healthcheck and emoji fonts for activity image generation
RUN apt-get update && \ RUN apt-get update && \
apt-get install -y --no-install-recommends curl && \ apt-get install -y --no-install-recommends \
curl \
fonts-noto-color-emoji && \
rm -rf /var/lib/apt/lists/* rm -rf /var/lib/apt/lists/*
# Create non-root user for security # Create non-root user for security

31
src/main/java/org/operaton/fitpub/service/ActivityImageService.java
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@ -694,8 +694,35 @@ public class ActivityImageService {
int emojiX = (int) (width * 0.3) - 100; // Center of left 60% int emojiX = (int) (width * 0.3) - 100; // Center of left 60%
int emojiY = height / 2; int emojiY = height / 2;
// Use a very large font for the emoji // Try multiple emoji fonts with fallbacks for cross-platform support
g2d.setFont(new Font("Segoe UI Emoji", Font.PLAIN, 200)); Font emojiFont = null;
String[] fontFamilies = {
"Noto Color Emoji", // Linux (most common on servers)
"Apple Color Emoji", // macOS
"Segoe UI Emoji", // Windows
"Symbola", // Fallback
"DejaVu Sans", // Universal fallback
Font.SANS_SERIF // System default
};
// Find first available emoji font
for (String fontFamily : fontFamilies) {
Font testFont = new Font(fontFamily, Font.PLAIN, 200);
if (testFont.canDisplayUpTo(emoji) == -1) {
emojiFont = testFont;
log.debug("Using emoji font: {}", fontFamily);
break;
}
}
// If no font found that can display emoji, use default and log warning
if (emojiFont == null) {
emojiFont = new Font(Font.SANS_SERIF, Font.PLAIN, 200);
log.warn("No suitable emoji font found, using fallback. Available fonts: {}",
String.join(", ", GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames()));
}
g2d.setFont(emojiFont);
g2d.setColor(Color.WHITE); g2d.setColor(Color.WHITE);
// Calculate emoji width to center it properly // Calculate emoji width to center it properly