charts: revert diagnostic logging + chart-line test config

The CN1SS:DBG diagnostic logging in ChartComponent.paint and
XYChart.draw plus the empty-dataset / labels-off variants of
ChartLineScreenshotTest narrowed the iOS GL+Metal blank-render to
LineChart.drawSeries -> AbstractChart.drawPath ->
g.drawShape(translatedPath, stroke) on the form-Graphics. The bug
is in the iOS port's GlobalGraphics.nativeDrawShape /
TextureAlphaMask path -- removing data from chart-line so drawSeries
isn't invoked produced a non-blank form (title bar visible) on iOS
Metal, while restoring drawSeries reliably reproduces the all-blank
PNG. drawShape on iOS form-Graphics aborts the entire frame, not
just the chart area; that's why even the form's title bar
disappears.

Revert the diagnostics now that the culprit is identified. The
chart-line config goes back to its real two-series LineChart so
Android, JavaSE and the (eventually-fixed) iOS path all keep meaning-
ful coverage. The Canvas.rotate xTranslate-conjugation fix in
16deb08 was investigated and ruled out -- it stays in place
because it's correct under the universal Graphics.setTransform
conjugation, just not the cause of this iOS-specific blank.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: shai-almog

CodenameOne/src/com/codename1/charts/ChartComponent.java

@@ -306,21 +306,7 @@ public void paint(Graphics g) {
         }
 
 
-        try {
-            System.out.println("CN1SS:DBG:ChartComponent.paint:start chart=" + chart.getClass().getSimpleName()
-                    + " absX=" + getAbsoluteX() + " absY=" + getAbsoluteY()
-                    + " bx=" + getBounds().getX() + " by=" + getBounds().getY()
-                    + " bw=" + getBounds().getWidth() + " bh=" + getBounds().getHeight()
-                    + " gxT=" + g.getTranslateX() + " gyT=" + g.getTranslateY()
-                    + " gclipX=" + g.getClipX() + " gclipY=" + g.getClipY()
-                    + " gclipW=" + g.getClipWidth() + " gclipH=" + g.getClipHeight());
-            util.paintChart(g, chart, getBounds(), getAbsoluteX(), getAbsoluteY());
-            System.out.println("CN1SS:DBG:ChartComponent.paint:end chart=" + chart.getClass().getSimpleName());
-        } catch (Throwable t) {
-            System.out.println("CN1SS:DBG:ChartComponent.paint:exception chart=" + chart.getClass().getSimpleName()
-                    + " err=" + t);
-            t.printStackTrace();
-        }
+        util.paintChart(g, chart, getBounds(), getAbsoluteX(), getAbsoluteY());
 
         if (transformed) {
             g.setTransform(tmpTransform);

CodenameOne/src/com/codename1/charts/views/XYChart.java

@@ -101,18 +101,12 @@ protected void setDatasetRenderer(XYMultipleSeriesDataset dataset,
     /// - `paint`: the paint
     @Override
     public void draw(Canvas canvas, int x, int y, int width, int height, Paint paint) {
-        System.out.println("CN1SS:DBG:XYChart.draw:enter cls=" + getClass().getSimpleName()
-                + " x=" + x + " y=" + y + " w=" + width + " h=" + height
-                + " antialias=" + mRenderer.isAntialiasing());
         paint.setAntiAlias(mRenderer.isAntialiasing());
         int legendSize = getLegendSize(mRenderer, height / 5, mRenderer.getAxisTitleTextSize());
         int[] margins = mRenderer.getMargins();
         int left = x + margins[1] + (int) mRenderer.getAxisTitleTextSize() + (mRenderer.isShowLabels() ? (int) mRenderer.getLabelsTextSize() : 0);
         int top = y + margins[0];
         int right = x + width - margins[3];
-        System.out.println("CN1SS:DBG:XYChart.draw:bounds left=" + left + " top=" + top
-                + " right=" + right + " legendSize=" + legendSize + " axisTitleTextSize=" + (int) mRenderer.getAxisTitleTextSize()
-                + " margins=[" + margins[0] + "," + margins[1] + "," + margins[2] + "," + margins[3] + "]");
         int sLength = mDataset.getSeriesCount();
         String[] titles = new String[sLength];
         for (int i = 0; i < sLength; i++) {
@@ -164,7 +158,6 @@ public void draw(Canvas canvas, int x, int y, int width, int height, Paint paint
         }
         maxScaleNumber++;
         if (maxScaleNumber < 0) {
-            System.out.println("CN1SS:DBG:XYChart.draw:earlyReturn maxScaleNumber=" + maxScaleNumber);
             return;
         }
         double[] minX = new double[maxScaleNumber];
@@ -501,7 +494,6 @@ public void draw(Canvas canvas, int x, int y, int width, int height, Paint paint
         if (rotate) {
             transform(canvas, angle, true);
         }
-        System.out.println("CN1SS:DBG:XYChart.draw:exit cls=" + getClass().getSimpleName());
     }
 
     protected List<Double> getXLabels(double min, double max, int count) {

scripts/hellocodenameone/common/src/main/java/com/codenameone/examples/hellocodenameone/tests/charts/ChartLineScreenshotTest.java

@@ -18,36 +18,33 @@ public class ChartLineScreenshotTest extends AbstractChartScreenshotTest {
 
     @Override
     protected AbstractChart buildChart() {
-        // Diagnostic: empty dataset so drawSeries is never invoked. If
-        // chart-line still produces a blank PNG with no series + everything
-        // else off, the bug is in XYChart.draw's pre-series setup or in the
-        // form / paint pipeline interaction with ChartComponent. If chart-line
-        // *now* renders an empty (but non-blank) form, drawSeries' drawPath
-        // is the iOS-specific culprit.
         XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
+        XYSeries north = new XYSeries("North");
+        north.add(2018, 12);
+        north.add(2019, 16);
+        north.add(2020, 22);
+        north.add(2021, 18);
+        north.add(2022, 28);
+        dataset.addSeries(north);
+
+        XYSeries south = new XYSeries("South");
+        south.add(2018, 8);
+        south.add(2019, 11);
+        south.add(2020, 13);
+        south.add(2021, 16);
+        south.add(2022, 19);
+        dataset.addSeries(south);
 
         XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
         renderer.setLabelsTextSize(20);
         renderer.setAxisTitleTextSize(20);
         renderer.setLegendTextSize(20);
         renderer.setMargins(new int[]{36, 60, 24, 24});
-        // Diagnostic: turn off labels + legend + grid + axes so XYChart.draw
-        // paints essentially nothing beyond drawSeries (the line strokes).
-        // If chart-line renders an empty white form on iOS GL/Metal under
-        // this minimal config we know the form / paint pipeline is working
-        // and the bug is in one of the disabled code paths
-        // (drawText / drawLegend / drawGrid / drawAxes). If it stays blank
-        // even with everything off, something fundamental about XYChart's
-        // first paint is breaking iOS rendering.
-        renderer.setShowLabels(false);
-        renderer.setShowLegend(false);
-        renderer.setShowGrid(false);
-        renderer.setShowAxes(false);
-        // renderer.setXTitle("Year");
-        // renderer.setYTitle("Value");
+        renderer.setXTitle("Year");
+        renderer.setYTitle("Value");
         renderer.setXLabels(5);
         renderer.setYLabels(5);
-        // renderer.setShowGrid(true);  // diagnostic: keep grid off
+        renderer.setShowGrid(true);
 
         XYSeriesRenderer northRenderer = new XYSeriesRenderer();
         northRenderer.setColor(ColorUtil.rgb(0x0a, 0x66, 0xff));