andreacavalli/jlinegraph
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Performance improvement

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This commit is contained in:
Andrea Cavalli 2022-09-15 18:37:57 +02:00
parent 2c1bd94f84
commit 7802386392
1 changed files with 28 additions and 12 deletions
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24
src/main/java/it/cavallium/jlinegraph/AWTGraphRenderer.java
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@ -92,7 +92,7 @@ public class AWTGraphRenderer implements IGraphRenderer<AWTDrawer> {
var xValueLineOffset = topPadding + graphHeight;
var yLabels = getYLabels(graph, graphHeight, valuesFontMetrics, scaleY);
var yLabels = getYLabels(graph, graphHeight, valuesFontMetrics, scaleY, y.mode());
RasterSize yLabelsAreaSize = computeYLabelsAreaSize(y.mode(), graphHeight, valuesFontMetrics, yLabels);
var yValuesWidth = yLabelsAreaSize.width();
var yValueLineOffset = leftPadding + yAxisNameWidth + yValuesToYAxisNamePadding + yValuesWidth;
@ -133,7 +133,7 @@ public class AWTGraphRenderer implements IGraphRenderer<AWTDrawer> {
}
}
var xLabels = getXLabels(graph, graphWidth, valuesFontMetrics, scaleX);
var xLabels = getXLabels(graph, graphWidth, valuesFontMetrics, scaleX, x.mode());
RasterSize yAxisNameCenterOffset = new RasterSize(leftPadding + valuesFontMetrics.getHeight() / 2d, valuesFontMetrics.getHeight()
// Add half of graph height
@ -752,7 +752,11 @@ public class AWTGraphRenderer implements IGraphRenderer<AWTDrawer> {
private static List<LabelWithOffset> getXLabels(Graph graph,
double labelsAreaWidth,
FontMetrics valuesFontMetrics,
NiceScale scaleX) {
NiceScale scaleX,
AxisMode mode) {
if (mode == AxisMode.HIDE) {
return List.of();
}
var bounds = graph.data().bounds();
var minX = bounds.minX();
var maxX = bounds.maxX();
@ -766,6 +770,7 @@ public class AWTGraphRenderer implements IGraphRenderer<AWTDrawer> {
double currentRasterOffset = 0;
double currentValue = minX;
while (currentValue <= maxX && i < MAX_LABELS && (scaleX.getTickSpacing() > 0)) {
if (mode.showLabels()) {
var formatted = format.apply(currentValue);
var stringWidth = valuesFontMetrics.stringWidth(formatted);
if (currentRasterOffset - stringWidth / 2d > prevRasterLabelEndOffset) {
@ -774,6 +779,9 @@ public class AWTGraphRenderer implements IGraphRenderer<AWTDrawer> {
} else {
labels.add(new LabelWithOffset(currentValue, currentRasterOffset, ""));
}
} else {
labels.add(new LabelWithOffset(currentValue, currentRasterOffset, ""));
}
i++;
currentValue = minX + i * scaleX.getTickSpacing();
@ -788,7 +796,11 @@ public class AWTGraphRenderer implements IGraphRenderer<AWTDrawer> {
private static List<LabelWithOffset> getYLabels(Graph graph,
double labelsAreaHeight,
FontMetrics valuesFontMetrics,
NiceScale scaleY) {
NiceScale scaleY,
AxisMode mode) {
if (mode == AxisMode.HIDE) {
return List.of();
}
var bounds = graph.data().bounds();
var minY = bounds.minY();
var maxY = bounds.maxY();
@ -804,12 +816,16 @@ public class AWTGraphRenderer implements IGraphRenderer<AWTDrawer> {
double currentRasterOffset = labelsAreaHeight;
double currentValue = minY;
while (currentValue <= maxY && i < MAX_LABELS && (scaleY.getTickSpacing() > 0)) {
if (mode.showLabels()) {
if (currentRasterOffset + stringBottom < prevRasterLabelEndOffset) {
labels.add(new LabelWithOffset(currentValue, currentRasterOffset, format.apply(currentValue)));
prevRasterLabelEndOffset = currentRasterOffset - stringTop;
} else {
labels.add(new LabelWithOffset(currentValue, currentRasterOffset, ""));
}
} else {
labels.add(new LabelWithOffset(currentValue, currentRasterOffset, ""));
}
i++;
currentValue = minY + i * scaleY.getTickSpacing();