scalling glyph does not introduce lost in quality

CHANGELOG

@@ -2,6 +2,7 @@ minerva (16.0.0~alpha.2) stable; urgency=medium
   * Backward incompatibility: debian package cannot be upgraded from version
     prior to 12.1.0 (#1464)
   * Small improvement: homomultimer information is provided in API (#1468)
+  * Small improvement: glyph quality is improved (#1458)
 
  -- Piotr Gawron <piotr.gawron@uni.lu>  Fri, 26 Mar 2021 10:00:00 +0200
 

converter-graphics/src/main/java/lcsb/mapviewer/converter/graphics/bioEntity/element/ElementConverter.java

@@ -99,10 +99,11 @@ public abstract class ElementConverter<T extends Element> extends BioEntityConve
   protected void drawGlyph(T bioEntity, Graphics2D graphics) throws DrawingException {
     try {
       Image img = ImageIO.read(new ByteArrayInputStream(bioEntity.getGlyph().getFile().getFileContent()));
-      graphics.drawImage(img,
+      
+      Image scaledImage = img.getScaledInstance(bioEntity.getWidth().intValue(), bioEntity.getHeight().intValue(), Image.SCALE_SMOOTH);
+
+      graphics.drawImage(scaledImage,
           bioEntity.getX().intValue(), bioEntity.getY().intValue(),
-          (int) (bioEntity.getX() + bioEntity.getWidth()), (int) (bioEntity.getY() + bioEntity.getHeight()),
-          0, 0, img.getWidth(null), img.getHeight(null),
           null);
     } catch (IOException e) {
       throw new DrawingException(

converter-graphics/src/test/java/lcsb/mapviewer/converter/graphics/GraphicsTestFunctions.java

@@ -16,6 +16,7 @@ import lcsb.mapviewer.common.UnitTestFailedWatcher;
 import lcsb.mapviewer.model.graphics.*;
 import lcsb.mapviewer.model.map.compartment.PathwayCompartment;
 import lcsb.mapviewer.model.map.compartment.SquareCompartment;
+import lcsb.mapviewer.model.map.layout.graphics.LayerText;
 import lcsb.mapviewer.model.map.modifier.Catalysis;
 import lcsb.mapviewer.model.map.reaction.*;
 import lcsb.mapviewer.model.map.species.*;
@@ -93,6 +94,19 @@ public abstract class GraphicsTestFunctions {
     return complex;
   }
 
+  protected LayerText createText() {
+    LayerText layerText = new LayerText();
+    layerText.setX(256.0);
+    layerText.setY(79.0);
+    layerText.setWidth(233.0);
+    layerText.setHeight(188.0);
+    layerText.setZ(0);
+    layerText.setNotes("asd as");
+    layerText.setColor(Color.BLACK);
+    return layerText;
+  }
+
+
   protected List<Color> removeAlpha(List<Color> allValues) {
     List<Color> result = new ArrayList<>();
     for (Color color : allValues) {

converter-graphics/src/test/java/lcsb/mapviewer/converter/graphics/NormalImageGeneratorTest.java

 package lcsb.mapviewer.converter.graphics;
 
-import java.awt.*;
+import java.awt.Color;
+import java.awt.Desktop;
 import java.awt.geom.Point2D;
 import java.awt.geom.Rectangle2D;
+import java.io.File;
+import java.nio.file.Files;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -10,12 +13,12 @@ import org.junit.*;
 
 import lcsb.mapviewer.commands.CreateHierarchyCommand;
 import lcsb.mapviewer.converter.graphics.AbstractImageGenerator.Params;
+import lcsb.mapviewer.model.cache.UploadedFileEntry;
 import lcsb.mapviewer.model.graphics.PolylineData;
-import lcsb.mapviewer.model.map.layout.graphics.Layer;
-import lcsb.mapviewer.model.map.layout.graphics.LayerText;
+import lcsb.mapviewer.model.map.layout.graphics.*;
 import lcsb.mapviewer.model.map.model.Model;
 import lcsb.mapviewer.model.map.model.ModelFullIndexed;
-import lcsb.mapviewer.model.map.species.Complex;
+import lcsb.mapviewer.model.map.species.*;
 
 public class NormalImageGeneratorTest extends GraphicsTestFunctions {
   static Logger logger = LogManager.getLogger();
@@ -33,27 +36,15 @@ public class NormalImageGeneratorTest extends GraphicsTestFunctions {
     model.setWidth(526);
     model.setHeight(346);
 
-    LayerText compAlias = new LayerText();
-    compAlias.setX(256.0);
-    compAlias.setY(79.0);
-    compAlias.setWidth(233.0);
-    compAlias.setHeight(188.0);
-    compAlias.setNotes("asd as");
-    compAlias.setColor(Color.BLACK);
+    LayerText layerText = createText();
     Layer layer = new Layer();
-    layer.addLayerText(compAlias);
+    layer.addLayerText(layerText);
     layer.setVisible(true);
     model.addLayer(layer);
 
     layer.addLayerLine(new PolylineData(new Point2D.Double(0, 0), new Point2D.Double(100, 100)));
 
-    Complex alias = new Complex("1");
-    alias.setName("a");
-    alias.setX(300);
-    alias.setY(90);
-    alias.setWidth(100);
-    alias.setHeight(50);
-    model.addElement(alias);
+    model.addElement(createComplex());
 
     return model;
   }