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Convert graphs to SVG

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zzz
2024-07-25 11:52:07 +00:00
parent 04390dd8fd
commit 3cc1eb7cc3
6 changed files with 970 additions and 10 deletions
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13
apps/routerconsole/java/src/net/i2p/router/web/SummaryRenderer.java
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@@ -19,6 +19,7 @@ import javax.imageio.stream.MemoryCacheImageOutputStream;
import net.i2p.I2PAppContext;
import net.i2p.data.DataHelper;
import net.i2p.rrd4j.SimpleSVGImageWorker;
import net.i2p.router.RouterContext;
import net.i2p.router.util.EventLog;
import static net.i2p.router.web.GraphConstants.*;
@@ -374,7 +375,8 @@ class SummaryRenderer {
RrdGraph graph;
try {
// NPE here if system is missing fonts - see ticket #915
graph = new RrdGraph(def);
SimpleSVGImageWorker svg = new SimpleSVGImageWorker(width, height);
graph = new RrdGraph(def, svg);
} catch (NullPointerException npe) {
_log.error("Error rendering graph", npe);
StatSummarizer.setDisabled(_context);
@@ -385,13 +387,8 @@ class SummaryRenderer {
StatSummarizer.setDisabled(_context);
throw new IOException("Error rendering - disabling graph generation. Missing font?");
}
int totalWidth = graph.getRrdGraphInfo().getWidth();
int totalHeight = graph.getRrdGraphInfo().getHeight();
BufferedImage img = new BufferedImage(totalWidth, totalHeight, BufferedImage.TYPE_USHORT_565_RGB);
Graphics gfx = img.getGraphics();
graph.render(gfx);
ios = new MemoryCacheImageOutputStream(out);
ImageIO.write(img, "png", ios);
out.write(graph.getRrdGraphInfo().getBytes());
out.flush();
_context.statManager().addRateData("graph.renderTime", System.currentTimeMillis() - begin);
} catch (RrdException re) {