mirror

diylc/diylc-core/src/main/java/org/diylc/core/BoardUndersideDisplay.java

@@ -0,0 +1,10 @@
+package org.diylc.core;
+
+public enum BoardUndersideDisplay {
+  NONE, ABOVE, BELOW, LEFT, RIGHT;
+  
+  @Override
+  public String toString() {
+    return super.toString().charAt(0) + super.toString().substring(1).toLowerCase();
+  }
+}

diylc/diylc-core/src/main/java/org/diylc/core/IBoard.java

@@ -0,0 +1,16 @@
+package org.diylc.core;
+
+import org.diylc.core.measures.Size;
+
+import java.awt.geom.Rectangle2D;
+
+public interface IBoard {
+  
+  Rectangle2D getBoardRectangle();
+
+  BoardUndersideDisplay getBoardUndersideDisplay();
+
+  Size getUndersideOffset();
+  
+  boolean shouldExportToGerber();
+}

diylc/diylc-core/src/main/java/org/diylc/core/gerber/GerberExporter.java

@@ -13,16 +13,15 @@ import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;
 import org.apache.log4j.Logger;
-
-import com.bancika.gerberwriter.DataLayer;
-
 import org.diylc.core.ComponentState;
+import org.diylc.core.IBoard;
 import org.diylc.core.IDIYComponent;
 import org.diylc.core.IView;
 import org.diylc.core.Project;
 import org.diylc.core.measures.Size;
 import org.diylc.core.measures.SizeUnit;
 import org.diylc.lang.LangUtil;
+import com.bancika.gerberwriter.DataLayer;
 
 public class GerberExporter {
 
@@ -30,44 +29,47 @@ public class GerberExporter {
   private static final Logger LOG = Logger.getLogger(GerberExporter.class);
 
   public static void exportGerber(String fileNameBase, Project currentProject, IView view,
-      Graphics2D graphics2d, String diylcVersion) {
+                                  Graphics2D graphics2d, String diylcVersion) {
-    List<IGerberBoard> gerberBoards =
-        currentProject.getComponents().stream().filter(c -> c instanceof IGerberBoard)
-            .map(x -> (IGerberBoard) x).collect(Collectors.toList());
 
-    Map<IGerberBoard, List<IDIYComponent<?>>> boardComponentMap =
+    List<IBoard> gerberBoards =
-        new HashMap<IGerberBoard, List<IDIYComponent<?>>>();
+            currentProject.getComponents().stream()
+                    .filter(IBoard.class::isInstance)
+                    .map(IBoard.class::cast)
+                    .filter(IBoard::shouldExportToGerber).collect(Collectors.toList());
+
+    Map<IBoard, List<IDIYComponent<?>>> boardComponentMap =
+            new HashMap<IBoard, List<IDIYComponent<?>>>();
 
     // DefaultGerberBoard defaultGerberBoard = new DefaultGerberBoard();
 
     List<IDIYComponent<?>> componentsWithoutBoard = new ArrayList<IDIYComponent<?>>();
 
     currentProject.getComponents().stream().filter(c -> c instanceof IGerberComponent)
-        .forEach(c -> {
+            .forEach(c -> {
-          Point2D firstPoint = c.getControlPoint(0);
+              Point2D firstPoint = c.getControlPoint(0);
-          IGerberBoard board = gerberBoards.stream()
+              IBoard board = gerberBoards.stream()
-              .filter(b -> b.getBoardRectangle().contains(firstPoint)).findFirst().orElse(null);
+                      .filter(b -> b.getBoardRectangle().contains(firstPoint)).findFirst().orElse(null);
-          if (board == null) {
+              if (board == null) {
-            componentsWithoutBoard.add(c);
+                componentsWithoutBoard.add(c);
-          } else {
+              } else {
-            boardComponentMap.computeIfAbsent(board, k -> new ArrayList<IDIYComponent<?>>()).add(c);
+                boardComponentMap.computeIfAbsent(board, k -> new ArrayList<IDIYComponent<?>>()).add(c);
-          }
+              }
-        });
+            });
 
     // defaultGerberBoard.setComponents(boardComponentMap.get(defaultGerberBoard));
 
     if (boardComponentMap.isEmpty()) {
       view.showMessage(LangUtil.translate("Nothing to export."),
-          LangUtil.translate("Gerber Export"), IView.WARNING_MESSAGE);
+              LangUtil.translate("Gerber Export"), IView.WARNING_MESSAGE);
       return;
     }
 
     if (componentsWithoutBoard.size() > 0) {
       if (view.showConfirmDialog(String.format(
-          LangUtil.translate("There are some components that are outside of the bounds of boards.%s"
+                      LangUtil.translate("There are some components that are outside of the bounds of boards.%s"
-              + "They will be ignored unless you add a board component underneath them.%sDo you want to continue?"),
+                              + "They will be ignored unless you add a board component underneath them.%sDo you want to continue?"),
-          "\n", "\n"), LangUtil.translate("Gerber Export"), IView.YES_NO_OPTION,
+                      "\n", "\n"), LangUtil.translate("Gerber Export"), IView.YES_NO_OPTION,
-          IView.WARNING_MESSAGE) != IView.YES_OPTION) {
+              IView.WARNING_MESSAGE) != IView.YES_OPTION) {
         return;
       }
     }
@@ -88,15 +90,15 @@ public class GerberExporter {
       String fileNameOutline = GerberLayer.Outline.formatFileName(fileNameBase, boardComponent.getName());
       try {
         LOG.info(String.format(LangUtil.translate("Exporting outline for board %s to file %s"),
-            boardComponent.getName(), fileNameOutline));
+                boardComponent.getName(), fileNameOutline));
         outlineLayer.dumpGerberToFile(fileNameOutline);
         generatedFiles.add(fileNameOutline);
       } catch (IOException e) {
         LOG.error("Error writing gerber file: " + e.getMessage());
         view.showMessage(
-            LangUtil.translate(
+                LangUtil.translate(
-                "Failed to export the project to gerber. Please check the log for details"),
+                        "Failed to export the project to gerber. Please check the log for details"),
-            LangUtil.translate("Gerber Export"), IView.ERROR_MESSAGE);
+                LangUtil.translate("Gerber Export"), IView.ERROR_MESSAGE);
         return;
       }
 
@@ -119,30 +121,30 @@ public class GerberExporter {
         try {
           String fileName = layer.formatFileName(fileNameBase, boardComponent.getName());
           LOG.info("Exporting layer: " + layer + " for board " + boardComponent.getName()
-              + " to file: " + fileName);
+                  + " to file: " + fileName);
           dataLayer.dumpGerberToFile(fileName);
           generatedFiles.add(fileName);
         } catch (IOException e) {
           LOG.error("Error writing gerber file: " + e.getMessage());
           view.showMessage(
-              LangUtil.translate(
+                  LangUtil.translate(
-                  "Failed to export the project to gerber. Please check the log for details"),
+                          "Failed to export the project to gerber. Please check the log for details"),
-              LangUtil.translate("Gerber Export"), IView.ERROR_MESSAGE);
+                  LangUtil.translate("Gerber Export"), IView.ERROR_MESSAGE);
           return;
         }
       });
     });
     view.showMessage(
-        String.format(
+            String.format(
-            LangUtil.translate(
+                    LangUtil.translate(
-                "Gerber export completed successfully. The following files were created:%s"),
+                            "Gerber export completed successfully. The following files were created:%s"),
-            "\n\n" + String.join("\n", generatedFiles)),
+                    "\n\n" + String.join("\n", generatedFiles)),
-        LangUtil.translate("Gerber Export"), IView.INFORMATION_MESSAGE);
+            LangUtil.translate("Gerber Export"), IView.INFORMATION_MESSAGE);
     LOG.info("Completed export to gerber");
   }
 
   private static void drawComponent(Project currentProject, GerberG2DWrapper g2d,
-      IDIYComponent<?> c, boolean outlineMode) {
+                                    IDIYComponent<?> c, boolean outlineMode) {
     IGerberComponent gerberComponent = (IGerberComponent) c;
     g2d.startedDrawingComponent();
     if (gerberComponent instanceof IGerberComponentCustom) {
@@ -151,7 +153,7 @@ public class GerberExporter {
     } else if (gerberComponent instanceof IGerberComponentSimple) {
       IGerberComponentSimple gerberComponentSimple = (IGerberComponentSimple) gerberComponent;
       g2d.startGerberOutput(gerberComponentSimple.getGerberLayer(),
-          gerberComponentSimple.getGerberFunction(), gerberComponentSimple.isGerberNegative());
+              gerberComponentSimple.getGerberFunction(), gerberComponentSimple.isGerberNegative());
       c.draw(g2d, ComponentState.NORMAL, outlineMode, currentProject, g2d);
       g2d.stopGerberOutput();
     }

diylc/diylc-core/src/main/java/org/diylc/core/gerber/IGerberBoard.java

@@ -1,8 +0,0 @@
-package org.diylc.core.gerber;
-
-import java.awt.geom.Rectangle2D;
-
-public interface IGerberBoard {
-  
-  Rectangle2D getBoardRectangle();
-}

diylc/diylc-core/src/main/java/org/diylc/presenter/DrawingCache.java

@@ -74,7 +74,7 @@ public class DrawingCache {
           .extractComponentTypeFrom((Class<? extends IDIYComponent<?>>) x.getComponent().getClass());
 
       if (type != null && type.getEnableCache()) {
-        renderAndCache(x.getComponent(), g2d, x.getState(), outlineMode, project, zoom, scaleFactor, x.getZOrder());
+        renderAndCache(x.getComponent(), g2d, x.getState(), outlineMode, project, zoom, scaleFactor, x.getZOrder(), false);
       }
     });
   }
@@ -89,10 +89,14 @@ public class DrawingCache {
    * @param outlineMode
    * @param project
    * @param zoom
+   * @param scaleFactor
+   * @param zOrder
+   * @param mirrored
    */
   @SuppressWarnings("unchecked")
   public void draw(IDIYComponent<?> component, G2DWrapper g2d, ComponentState componentState,
-      boolean outlineMode, Project project, double zoom, double scaleFactor, int zOrder, Rectangle2D visibleRect) {
+      boolean outlineMode, Project project, double zoom, double scaleFactor, int zOrder, Rectangle2D visibleRect,
+                   boolean mirrored) {
     ComponentType type = ComponentProcessor.getInstance()
         .extractComponentTypeFrom((Class<? extends IDIYComponent<?>>) component.getClass());
 
@@ -100,7 +104,7 @@ public class DrawingCache {
       // if we need to apply caching
       Point2D firstPoint = component.getControlPoint(0);
       
-      CacheValue value = renderAndCache(component, g2d, componentState, outlineMode, project, zoom, scaleFactor, zOrder); 
+      CacheValue value = renderAndCache(component, g2d, componentState, outlineMode, project, zoom, scaleFactor, zOrder, mirrored);
       
       if (value == null) {
         return;
@@ -180,7 +184,7 @@ public class DrawingCache {
   }
   
   private CacheValue renderAndCache(IDIYComponent<?> component, G2DWrapper g2d, ComponentState componentState,
-      boolean outlineMode, Project project, double zoom, double scaleFactor, int zOrder) {
+      boolean outlineMode, Project project, double zoom, double scaleFactor, int zOrder, boolean mirrored) {
     // if we need to apply caching
     Point2D firstPoint = component.getControlPoint(0);
 
@@ -196,7 +200,7 @@ public class DrawingCache {
     // only honor the cache if the component hasn't changed in the meantime
     if (value == null || !value.getComponent().equalsTo(component)
         || value.getState() != componentState || value.getZoom() != zoom || value.getOutlineMode() != outlineMode
-        || value.getScaleFactor() != scaleFactor) {
+        || value.getScaleFactor() != scaleFactor || value.isMirrored() != mirrored) {
       // figure out size and placement of buffer image
       Rectangle2D rect = component.getCachingBounds();
       int width = (int)Math.round(rect.getWidth() * zoom);
@@ -270,7 +274,7 @@ public class DrawingCache {
       
       // add to the cache        
       value = new CacheValue(component, image, wrapper.getCurrentArea(), wrapper.getContinuityPositiveAreas(),
-          wrapper.getContinuityNegativeAreas(), componentState, outlineMode, zoom, scaleFactor, dx, dy, rect);        
+          wrapper.getContinuityNegativeAreas(), componentState, outlineMode, zoom, scaleFactor, dx, dy, rect, mirrored);
       imageCache.put(component, new SoftReference<DrawingCache.CacheValue>(value));
     }
     
@@ -287,6 +291,7 @@ public class DrawingCache {
     boolean outlineMode;
     double zoom;
     double scaleFactor;
+    boolean mirrored;
     int dx;
     int dy;
     Rectangle2D cacheBounds;
@@ -294,7 +299,7 @@ public class DrawingCache {
     public CacheValue(IDIYComponent<?> component, BufferedImage image, Area currentArea,
         Map<String, Area> continuityPositiveAreas,  Map<String, Area> continuityNegativeAreas,
         ComponentState state, boolean outlineMode, double zoom, double scaleFactor, int dx, int dy,
-        Rectangle2D cacheBounds) {
+        Rectangle2D cacheBounds, boolean mirrored) {
       super();
       this.cacheBounds = cacheBounds;
       // take a copy of the component, so we can check if it changed in the meantime
@@ -309,6 +314,7 @@ public class DrawingCache {
       this.state = state;
       this.outlineMode = outlineMode;
       this.zoom = zoom;
+      this.scaleFactor = scaleFactor;
       this.dx = dx;
       this.dy = dy;
     }
@@ -349,6 +355,10 @@ public class DrawingCache {
       return scaleFactor;
     }
 
+    public boolean isMirrored() {
+      return mirrored;
+    }
+
     public int getDx() {
       return dx;
     }

diylc/diylc-core/src/main/java/org/diylc/presenter/DrawingManager.java

@@ -46,17 +46,20 @@ import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;
 import org.apache.log4j.Logger;
+import org.checkerframework.checker.units.qual.A;
 import org.diylc.appframework.miscutils.IConfigurationManager;
 import org.diylc.appframework.simplemq.MessageDispatcher;
-
 import org.diylc.common.DrawOption;
 import org.diylc.common.EventType;
 import org.diylc.common.GridType;
 import org.diylc.common.IComponentFilter;
 import org.diylc.common.IPlugInPort;
 import org.diylc.common.ObjectCache;
+import org.diylc.components.AbstractTransparentComponent;
+import org.diylc.core.BoardUndersideDisplay;
 import org.diylc.core.ComponentForRender;
 import org.diylc.core.ComponentState;
+import org.diylc.core.IBoard;
 import org.diylc.core.IContinuity;
 import org.diylc.core.IDIYComponent;
 import org.diylc.core.ILayeredComponent;
@@ -92,6 +95,8 @@ public class DrawingManager {
   public static Color CONTROL_POINT_COLOR = Color.blue;
   public static Color SELECTED_CONTROL_POINT_COLOR = Color.green;
 
+  private static final Byte MIRRORED_ALPHA = 64;
+
   private Theme theme;
 
   // Maps keyed by object reference.
@@ -127,7 +132,7 @@ public class DrawingManager {
   private List<Area> proximityMarkers = null;
 
   public DrawingManager(MessageDispatcher<EventType> messageDispatcher,
-      IConfigurationManager<?> configManager) {
+                        IConfigurationManager<?> configManager) {
     super();
     this.messageDispatcher = messageDispatcher;
     this.configManager = configManager;
@@ -145,11 +150,11 @@ public class DrawingManager {
     lastDrawnStateMap = new HashMap<IDIYComponent<?>, ComponentState>();
     String debugComponentAreasStr = System.getProperty(DEBUG_COMPONENT_AREAS);
     debugComponentAreas =
-        debugComponentAreasStr != null && debugComponentAreasStr.equalsIgnoreCase("true");
+            debugComponentAreasStr != null && debugComponentAreasStr.equalsIgnoreCase("true");
 
     String debugContinuityAreasStr = System.getProperty(DEBUG_CONTINUITY_AREAS);
     debugContinuityAreas =
-        debugContinuityAreasStr != null && debugContinuityAreasStr.equalsIgnoreCase("true");
+            debugContinuityAreasStr != null && debugContinuityAreasStr.equalsIgnoreCase("true");
   }
 
   /**
@@ -171,12 +176,14 @@ public class DrawingManager {
    * @param visibleRect
    * @return
    */
+  @SuppressWarnings("unlikely-arg-type")
   public List<IDIYComponent<?>> drawProject(Graphics2D g2d, Project project,
-      Set<DrawOption> drawOptions, IComponentFilter filter, Rectangle selectionRect,
+                                            Set<DrawOption> drawOptions, IComponentFilter filter, Rectangle selectionRect,
-      Collection<IDIYComponent<?>> selectedComponents, Set<IDIYComponent<?>> lockedComponents,
+                                            Collection<IDIYComponent<?>> selectedComponents, Set<IDIYComponent<?>> lockedComponents,
-      Set<IDIYComponent<?>> groupedComponents, List<Point2D> controlPointSlot,
+                                            Set<IDIYComponent<?>> groupedComponents, List<Point2D> controlPointSlot,
-      List<IDIYComponent<?>> componentSlot, boolean dragInProgress, Double externalZoom,
+                                            List<IDIYComponent<?>> componentSlot, boolean dragInProgress, Double externalZoom,
-      Double scaleFactor, Rectangle2D visibleRect) {
+                                            Double scaleFactor, Rectangle2D visibleRect) {
+
     long totalStartTime = System.nanoTime();
     failedComponents.clear();
     if (project == null) {
@@ -195,42 +202,39 @@ public class DrawingManager {
 
     G2DWrapper g2dWrapper = new G2DWrapper(g2d, zoom);
 
-    if (drawOptions.contains(DrawOption.ANTIALIASING)) {
+    configureG2D(g2d, drawOptions);
-      g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+
-      g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
+    // group components with boards that contain them
-          RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+    Map<IBoard, List<IDIYComponent<?>>> boardMap = project.getComponents().stream()
-    } else {
+            .filter(IBoard.class::isInstance)
-      g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
+            .map(IBoard.class::cast)
-      g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
+            .filter(b -> b.getBoardUndersideDisplay() != BoardUndersideDisplay.NONE)
-          RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
+            .collect(Collectors.toMap(x -> x, x -> new ArrayList<IDIYComponent<?>>()));
+    Map<IDIYComponent<?>, List<IBoard>> componentBoardMap = new HashMap<IDIYComponent<?>, List<IBoard>>();
+
+    for (IBoard board : boardMap.keySet()) {
+      Rectangle2D boardRect = board.getBoardRectangle();
+      for (IDIYComponent<?> c : project.getComponents()) {
+        if (c == board) {
+          continue;
+        }
+        boolean include = true;
+        for (int i = 0; i < c.getControlPointCount(); i++) {
+          if (!boardRect.contains(c.getControlPoint(i))) {
+            include = false;
+            break;
+          }
+        }
+        if (include) {
+          boardMap.get(board).add(c);
+          componentBoardMap.computeIfAbsent(c, key -> new ArrayList<IBoard>()).add(board);
+        }
+      }
     }
-    if (configManager.readBoolean(IPlugInPort.HI_QUALITY_RENDER_KEY, false)) {
-      g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
-          RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
-      g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING,
-          RenderingHints.VALUE_COLOR_RENDER_QUALITY);
-      g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
-      g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
-      g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
-          RenderingHints.VALUE_INTERPOLATION_BILINEAR);
-      // g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,
-      // RenderingHints.VALUE_STROKE_PURE);
-    } else {
-      g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
-          RenderingHints.VALUE_ALPHA_INTERPOLATION_SPEED);
-      g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING,
-          RenderingHints.VALUE_COLOR_RENDER_SPEED);
-      g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
-      g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);
-      g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
-          RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
-    }
-    g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
-        RenderingHints.VALUE_FRACTIONALMETRICS_OFF);
 
     // AffineTransform initialTx = g2d.getTransform();
     Dimension canvasDimension =
-        getCanvasDimensions(project, zoom, drawOptions.contains(DrawOption.EXTRA_SPACE));
+            getCanvasDimensions(project, zoom, drawOptions.contains(DrawOption.EXTRA_SPACE));
 
     g2dWrapper.setColor(theme.getBgColor());
     g2dWrapper.fillRect(0, 0, canvasDimension.width, canvasDimension.height);
@@ -243,14 +247,14 @@ public class DrawingManager {
     double extraSpace = getExtraSpace(project) * zoom;
 
     drawGrid(project, g2d, zoom, extraSpace, canvasDimension, visibleRect, drawOptions,
-        extraSpaceRect, extraSpaceTx);
+            extraSpaceRect, extraSpaceTx);
 
     // apply zoom
     if (Math.abs(1.0 - zoom) > 1e-4) {
       g2dWrapper.scale(zoom, zoom);
       if (visibleRect != null)
         visibleRect.setRect(visibleRect.getX() / zoom, visibleRect.getY() / zoom,
-            visibleRect.getWidth() / zoom, visibleRect.getHeight() / zoom);
+                visibleRect.getWidth() / zoom, visibleRect.getHeight() / zoom);
     }
 
     // Composite mainComposite = g2d.getComposite();
@@ -292,12 +296,13 @@ public class DrawingManager {
       if (filter != null && !filter.testComponent(component)) {
         continue;
       }
+
       ComponentState state = componentStateMap.get(component);
       // Do not track the area if component is not invalidated and was
       // drawn in the same state.
       boolean trackArea = lastDrawnStateMap.get(component) != state;
 
-      synchronized (g2d) {
+      synchronized (this) {
         g2dWrapper.startedDrawingComponent(i);
         if (!trackArea) {
           g2dWrapper.stopTracking();
@@ -312,15 +317,26 @@ public class DrawingManager {
         long componentStart = System.nanoTime();
         try {
 
-          if (drawOptions.contains(DrawOption.ENABLE_CACHING)) // go through the DrawingCache
+          AffineTransform txBefore = new AffineTransform(g2d.getTransform());
-            DrawingCache.Instance.draw(component, g2dWrapper, state,
+          drawComponent(project, drawOptions, scaleFactor, visibleRect, zoom, g2dWrapper,
-                drawOptions.contains(DrawOption.OUTLINE_MODE), project, zoom, scaleFactor, i, visibleRect);
+                  outlineMode, i, component, state, false);
-          else // go straight to the wrapper
+          g2dWrapper.setTransform(txBefore);
-            component.draw(g2dWrapper, state, outlineMode, project, g2dWrapper);
 
-          if (g2dWrapper.isTrackingContinuityArea()) {
+          // find one or more boards that contain the component and mirror the component to all
-            LOG.info("Component " + component.getName() + " of type "
+          List<IBoard> boards = componentBoardMap.get(component);
-                + component.getClass().getName() + " did not stop tracking continuity area.");
+          if (boards != null) {
+            for (IBoard board : boards) {
+              double boardMirrorSpacing  = board.getUndersideOffset().convertToPixels();
+              drawMirroredComponent(project, drawOptions, scaleFactor, visibleRect, zoom,
+                      g2dWrapper, outlineMode, i, state, boardMirrorSpacing, component, board);
+            }
+          }
+          // if the component is the board itself, mirror it
+          if (boardMap.keySet().contains(component)) {
+            IBoard board = (IBoard) component;
+            double boardMirrorSpacing  = board.getUndersideOffset().convertToPixels();
+            drawMirroredComponent(project, drawOptions, scaleFactor, visibleRect, zoom,
+                    g2dWrapper, outlineMode, i, state, boardMirrorSpacing, component, (IBoard)component);
           }
         } catch (Exception e) {
           LOG.error("Error drawing " + component.getName(), e);
@@ -362,17 +378,17 @@ public class DrawingManager {
               continue;
             VisibilityPolicy visibilityPolicy = component.getControlPointVisibilityPolicy(i);
             if ((groupedComponents.contains(component)
-                && (visibilityPolicy == VisibilityPolicy.ALWAYS
+                    && (visibilityPolicy == VisibilityPolicy.ALWAYS
                     || (selectedComponents.contains(component)
-                        && visibilityPolicy == VisibilityPolicy.WHEN_SELECTED))
+                    && visibilityPolicy == VisibilityPolicy.WHEN_SELECTED))
-                || (!groupedComponents.contains(component)
+                    || (!groupedComponents.contains(component)
                     && !selectedComponents.contains(component)
                     && component.getControlPointVisibilityPolicy(i) == VisibilityPolicy.ALWAYS))) {
               g2dWrapper.setColor(CONTROL_POINT_COLOR);
               Point2D controlPoint = component.getControlPoint(i);
               int pointSize = CONTROL_POINT_SIZE - 2;
               g2dWrapper.fillOval((int) (controlPoint.getX() - pointSize / 2),
-                  (int) (controlPoint.getY() - pointSize / 2), pointSize, pointSize);
+                      (int) (controlPoint.getY() - pointSize / 2), pointSize, pointSize);
             }
           }
         }
@@ -381,7 +397,7 @@ public class DrawingManager {
       for (IDIYComponent<?> component : selectedComponents) {
         for (int i = 0; i < component.getControlPointCount(); i++) {
           if (!groupedComponents.contains(component)
-              && (component.getControlPointVisibilityPolicy(i) == VisibilityPolicy.WHEN_SELECTED
+                  && (component.getControlPointVisibilityPolicy(i) == VisibilityPolicy.WHEN_SELECTED
                   || component.getControlPointVisibilityPolicy(i) == VisibilityPolicy.ALWAYS)) {
 
             Point2D controlPoint = component.getControlPoint(i);
@@ -389,11 +405,11 @@ public class DrawingManager {
 
             g2dWrapper.setColor(SELECTED_CONTROL_POINT_COLOR.darker());
             g2dWrapper.fillOval((int) (controlPoint.getX() - pointSize / 2),
-                (int) (controlPoint.getY() - pointSize / 2), pointSize, pointSize);
+                    (int) (controlPoint.getY() - pointSize / 2), pointSize, pointSize);
             g2dWrapper.setColor(SELECTED_CONTROL_POINT_COLOR);
             g2dWrapper.fillOval((int) (controlPoint.getX() - CONTROL_POINT_SIZE / 2 + 1),
-                (int) (controlPoint.getY() - CONTROL_POINT_SIZE / 2 + 1), CONTROL_POINT_SIZE - 2,
+                    (int) (controlPoint.getY() - CONTROL_POINT_SIZE / 2 + 1), CONTROL_POINT_SIZE - 2,
-                CONTROL_POINT_SIZE - 2);
+                    CONTROL_POINT_SIZE - 2);
           }
         }
       }
@@ -407,7 +423,7 @@ public class DrawingManager {
         try {
 
           component.draw(g2dWrapper, ComponentState.NORMAL,
-              drawOptions.contains(DrawOption.OUTLINE_MODE), project, g2dWrapper);
+                  drawOptions.contains(DrawOption.OUTLINE_MODE), project, g2dWrapper);
 
         } catch (Exception e) {
           LOG.error("Error drawing " + component.getName(), e);
@@ -423,12 +439,12 @@ public class DrawingManager {
         if (point != null) {
           g2dWrapper.setColor(SELECTED_CONTROL_POINT_COLOR.darker());
           g2dWrapper.fillOval((int) (point.getX() - CONTROL_POINT_SIZE / 2),
-              (int) (point.getY() - CONTROL_POINT_SIZE / 2), CONTROL_POINT_SIZE,
+                  (int) (point.getY() - CONTROL_POINT_SIZE / 2), CONTROL_POINT_SIZE,
-              CONTROL_POINT_SIZE);
+                  CONTROL_POINT_SIZE);
           g2dWrapper.setColor(SELECTED_CONTROL_POINT_COLOR);
           g2dWrapper.fillOval((int) (point.getX() - CONTROL_POINT_SIZE / 2 + 1),
-              (int) (point.getY() - CONTROL_POINT_SIZE / 2 + 1), CONTROL_POINT_SIZE - 2,
+                  (int) (point.getY() - CONTROL_POINT_SIZE / 2 + 1), CONTROL_POINT_SIZE - 2,
-              CONTROL_POINT_SIZE - 2);
+                  CONTROL_POINT_SIZE - 2);
         }
       }
     }
@@ -493,7 +509,7 @@ public class DrawingManager {
     // shade extra space
     if (drawOptions.contains(DrawOption.EXTRA_SPACE) && SHADE_EXTRA_SPACE && extraSpaceRect != null) {
       Area extraSpaceArea = new Area(
-          new Rectangle2D.Double(0, 0, canvasDimension.getWidth(), canvasDimension.getHeight()));
+              new Rectangle2D.Double(0, 0, canvasDimension.getWidth(), canvasDimension.getHeight()));
       extraSpaceArea.subtract(new Area(extraSpaceRect));
       g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.05f));
       g2d.setTransform(extraSpaceTx);
@@ -510,6 +526,123 @@ public class DrawingManager {
     return failedComponents;
   }
 
+  private void drawMirroredComponent(Project project, Set<DrawOption> drawOptions,
+                                     Double scaleFactor, Rectangle2D visibleRect, double zoom, G2DWrapper g2dWrapper,
+                                     boolean outlineMode, int i, ComponentState state, double boardMirrorSpacing,
+                                     IDIYComponent<?> componentToDraw, IBoard board) {
+    Rectangle2D boardRectangle = board.getBoardRectangle();
+    AffineTransform mirrorTx = null;
+    switch (board.getBoardUndersideDisplay()) {
+      case ABOVE:
+        mirrorTx = new AffineTransform();
+        mirrorTx.translate(boardRectangle.getMinX(), boardRectangle.getMinY());
+        mirrorTx.scale(1, -1);
+        mirrorTx.translate(-boardRectangle.getMinX(), -boardRectangle.getMinY());
+        mirrorTx.translate(0, boardMirrorSpacing);
+        break;
+      case BELOW:
+        mirrorTx = new AffineTransform();
+        mirrorTx.translate(boardRectangle.getMinX(), boardRectangle.getMaxY());
+        mirrorTx.scale(1, -1);
+        mirrorTx.translate(-boardRectangle.getMinX(), -boardRectangle.getMaxY());
+        mirrorTx.translate(0, -boardMirrorSpacing);
+        break;
+      case LEFT:
+        mirrorTx = new AffineTransform();
+        mirrorTx.translate(boardRectangle.getMinX(), boardRectangle.getMinY());
+        mirrorTx.scale(-1, 1);
+        mirrorTx.translate(-boardRectangle.getMinX(), -boardRectangle.getMinY());
+        mirrorTx.translate(boardMirrorSpacing, 0);
+        break;
+      case RIGHT:
+        mirrorTx = new AffineTransform();
+        mirrorTx.translate(boardRectangle.getMaxX(), boardRectangle.getMinY());
+        mirrorTx.scale(-1, 1);
+        mirrorTx.translate(-boardRectangle.getMaxX(), -boardRectangle.getMinY());
+        mirrorTx.translate(-boardMirrorSpacing, 0);
+        break;
+      default:
+        LOG.warn("Unexpected board underside display: " + board.getBoardUndersideDisplay());
+        break;
+    }
+    AffineTransform txBefore = new AffineTransform(g2dWrapper.getTransform());
+    byte alphaBefore = 0;
+    if (AbstractTransparentComponent.class.isInstance(componentToDraw)) {
+      alphaBefore = ((AbstractTransparentComponent<?>)componentToDraw).getAlpha();
+      ((AbstractTransparentComponent<?>)componentToDraw).setAlpha(MIRRORED_ALPHA);
+    }
+    try {
+      g2dWrapper.setMirrorTransform(mirrorTx);
+      g2dWrapper.transform(mirrorTx);
+
+      drawComponent(project, drawOptions, scaleFactor, visibleRect, zoom, g2dWrapper, outlineMode, i, componentToDraw, state, true);
+
+//      componentToDraw.draw(g2dWrapper, state, outlineMode, project, g2dWrapper);
+    } finally {
+      g2dWrapper.setTransform(txBefore);
+      g2dWrapper.setMirrorTransform(null);
+      if (AbstractTransparentComponent.class.isInstance(componentToDraw)) {
+        ((AbstractTransparentComponent<?>)componentToDraw).setAlpha(alphaBefore);
+      }
+    }
+  }
+
+  private void drawComponent(Project project, Set<DrawOption> drawOptions, Double scaleFactor,
+                             Rectangle2D visibleRect, double zoom, G2DWrapper g2dWrapper, boolean outlineMode, int i,
+                             IDIYComponent<?> component, ComponentState state, boolean mirrored) {
+
+    AffineTransform txBefore = new AffineTransform(g2dWrapper.getTransform());
+    try {
+      if (drawOptions.contains(DrawOption.ENABLE_CACHING)) // go through the DrawingCache
+        DrawingCache.Instance.draw(component, g2dWrapper, state,
+                drawOptions.contains(DrawOption.OUTLINE_MODE), project, zoom, scaleFactor, i, visibleRect, mirrored);
+      else // go straight to the wrapper
+        component.draw(g2dWrapper, state, outlineMode, project, g2dWrapper);
+
+      if (g2dWrapper.isTrackingContinuityArea()) {
+        LOG.debug("Component " + component.getName() + " of type "
+                + component.getClass().getName() + " did not stop tracking continuity area.");
+      }
+    } finally {
+      g2dWrapper.setTransform(txBefore);
+    }
+  }
+
+  private void configureG2D(Graphics2D g2d, Set<DrawOption> drawOptions) {
+    if (drawOptions.contains(DrawOption.ANTIALIASING)) {
+      g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+      g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
+              RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+    } else {
+      g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
+      g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
+              RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
+    }
+    if (configManager.readBoolean(IPlugInPort.HI_QUALITY_RENDER_KEY, false)) {
+      g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
+              RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
+      g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING,
+              RenderingHints.VALUE_COLOR_RENDER_QUALITY);
+      g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
+      g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
+      g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
+              RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+      // g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,
+      // RenderingHints.VALUE_STROKE_PURE);
+    } else {
+      g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
+              RenderingHints.VALUE_ALPHA_INTERPOLATION_SPEED);
+      g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING,
+              RenderingHints.VALUE_COLOR_RENDER_SPEED);
+      g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
+      g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);
+      g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
+              RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
+    }
+    g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
+            RenderingHints.VALUE_FRACTIONALMETRICS_OFF);
+  }
+
   private double zoomCached = 0;
   private Dimension canvasDimensionCached;
   private double extraSpaceCached;
@@ -517,8 +650,8 @@ public class DrawingManager {
   private BufferedImage cachedGridImage;
 
   private void drawGrid(Project project, Graphics2D g2dIn, double zoom, double extraSpace,
-      Dimension canvasDimension, Rectangle2D visibleRect, Set<DrawOption> drawOptions,
+                        Dimension canvasDimension, Rectangle2D visibleRect, Set<DrawOption> drawOptions,
-      Rectangle2D extraSpaceRect, AffineTransform extraSpaceTx) {
+                        Rectangle2D extraSpaceRect, AffineTransform extraSpaceTx) {
 
     GridType gridType = GridType.LINES;
 
@@ -526,10 +659,10 @@ public class DrawingManager {
 
     // draw from cache
     if (zoom != zoomCached || !canvasDimension.equals(canvasDimensionCached)
-        || extraSpace != extraSpaceCached || gridType != gridTypeCached) {      
+            || extraSpace != extraSpaceCached || gridType != gridTypeCached) {
       try {
         cachedGridImage = new BufferedImage((int) canvasDimension.getWidth(),
-            (int) canvasDimension.getHeight(), BufferedImage.TYPE_INT_ARGB);
+                (int) canvasDimension.getHeight(), BufferedImage.TYPE_INT_ARGB);
         // create graphics
         Graphics2D g2d = cachedGridImage.createGraphics();
 
@@ -538,11 +671,11 @@ public class DrawingManager {
           float gridThickness = (float) (1f * (zoom > 1 ? 1 : zoom));
           if (gridType == GridType.CROSSHAIR) {
             g2d.setStroke(new BasicStroke(gridThickness, BasicStroke.CAP_BUTT,
-                BasicStroke.JOIN_MITER, 10f,
+                    BasicStroke.JOIN_MITER, 10f,
-                new float[] {(float) zoomStep / 2, (float) zoomStep / 2}, (float) zoomStep / 4));
+                    new float[] {(float) zoomStep / 2, (float) zoomStep / 2}, (float) zoomStep / 4));
           } else if (gridType == GridType.DOT) {
             g2d.setStroke(new BasicStroke(gridThickness, BasicStroke.CAP_BUTT,
-                BasicStroke.JOIN_MITER, 10f, new float[] {1f, (float) zoomStep - 1}, 0f));
+                    BasicStroke.JOIN_MITER, 10f, new float[] {1f, (float) zoomStep - 1}, 0f));
           } else {
             g2d.setStroke(ObjectCache.getInstance().fetchZoomableStroke(gridThickness));
           }
@@ -559,9 +692,9 @@ public class DrawingManager {
             g2d.setStroke(ObjectCache.getInstance().fetchZoomableStroke(gridThickness * 3));
             g2d.setColor(theme.getDotColor());
             for (double i = extraSpace + zoomStep * project.getDotSpacing(); i < extraSpace
-                + innerCanvasDimension.width; i += zoomStep * project.getDotSpacing())
+                    + innerCanvasDimension.width; i += zoomStep * project.getDotSpacing())
               for (double j = extraSpace + zoomStep * project.getDotSpacing(); j < extraSpace
-                  + innerCanvasDimension.height; j += zoomStep * project.getDotSpacing()) {
+                      + innerCanvasDimension.height; j += zoomStep * project.getDotSpacing()) {
                 g2d.fillOval((int) Math.round(i - 1), (int) Math.round(j - 1), 3, 3);
               }
           }
@@ -587,10 +720,10 @@ public class DrawingManager {
     if (drawOptions.contains(DrawOption.EXTRA_SPACE)) {
       float borderThickness = (float) (3f * (zoom > 1 ? 1 : zoom));
       g2dIn.setStroke(ObjectCache.getInstance().fetchStroke(borderThickness,
-          new float[] {borderThickness * 4, borderThickness * 4,}, 0, BasicStroke.CAP_BUTT));
+              new float[] {borderThickness * 4, borderThickness * 4,}, 0, BasicStroke.CAP_BUTT));
       g2dIn.setColor(theme.getOutlineColor());
       extraSpaceRect.setRect(new Rectangle2D.Double(extraSpace, extraSpace,
-          innerCanvasDimension.getWidth(), innerCanvasDimension.getHeight()));
+              innerCanvasDimension.getWidth(), innerCanvasDimension.getHeight()));
       g2dIn.draw(extraSpaceRect);
       extraSpaceTx.setTransform(g2dIn.getTransform());
 
@@ -598,7 +731,7 @@ public class DrawingManager {
       g2dIn.transform(AffineTransform.getTranslateInstance(extraSpace, extraSpace));
       if (visibleRect != null)
         visibleRect.setRect(visibleRect.getX() - extraSpace, visibleRect.getY() - extraSpace,
-            visibleRect.getWidth(), visibleRect.getHeight());
+                visibleRect.getWidth(), visibleRect.getHeight());
     }
   }
 
@@ -607,9 +740,9 @@ public class DrawingManager {
     if (System.currentTimeMillis() - lastStatsReportedTime > statReportFrequencyMs) {
       lastStatsReportedTime = System.currentTimeMillis();
       String mapAsString = renderStatsByType.entrySet().stream()
-          .sorted(
+              .sorted(
-              (e1, e2) -> -Long.compare(e1.getValue().getNanoTime(), e2.getValue().getNanoTime()))
+                      (e1, e2) -> -Long.compare(e1.getValue().getNanoTime(), e2.getValue().getNanoTime()))
-          .map(e -> e.toString()).collect(Collectors.joining("; ", "{", "}"));
+              .map(e -> e.toString()).collect(Collectors.joining("; ", "{", "}"));
       LOG.debug("Render stats: " + mapAsString);
       LOG.debug("Page stats: " + totalStats.toAvgString());
       DrawingCache.Instance.logStats();
@@ -664,11 +797,11 @@ public class DrawingManager {
     double height = project.getHeight().convertToPixels();
     double targetExtraSpace = EXTRA_SPACE * Math.max(width, height);
     return CalcUtils.roundToGrid(targetExtraSpace,
-        project.getGridSpacing().scale(project.getDotSpacing()));
+            project.getGridSpacing().scale(project.getDotSpacing()));
   }
 
   public Dimension getCanvasDimensions(Project project, Double zoomLevel,
-      boolean includeExtraSpace) {
+                                       boolean includeExtraSpace) {
     double width = project.getWidth().convertToPixels();
     double height = project.getHeight().convertToPixels();
 
@@ -759,8 +892,8 @@ public class DrawingManager {
           areas.add(a);
         } else {
           areas.addAll(breakoutAreas.stream()
-              .map(area -> new ContinuityArea(a.getLayerId(), area))
+                  .map(area -> new ContinuityArea(a.getLayerId(), area))
-              .collect(Collectors.toList())); 
+                  .collect(Collectors.toList()));
         }
       } else
         areas.add(a);
@@ -790,9 +923,9 @@ public class DrawingManager {
   public List<Area> getContinuityAreaProximity(float threshold) {
     List<ContinuityArea> continuityAreas = getContinuityAreas();
     Stroke s = ObjectCache.getInstance().fetchBasicStroke(threshold - 1); // value eyeballed for
-                                                                          // approx good results
+    // approx good results
     List<Area> expanded = continuityAreas.parallelStream()
-        .map((a) -> new Area(s.createStrokedShape(a.getArea()))).collect(Collectors.toList());
+            .map((a) -> new Area(s.createStrokedShape(a.getArea()))).collect(Collectors.toList());
     List<Area> intersections = new ArrayList<Area>();
     for (int i = 0; i < expanded.size() - 1; i++) {
       for (int j = i + 1; j < expanded.size(); j++) {
@@ -812,13 +945,13 @@ public class DrawingManager {
       Rectangle2D bounds2d = a.getBounds2D();
       if (bounds2d.getWidth() < minSize)
         bounds2d = new Rectangle2D.Double(bounds2d.getCenterX() - minSize / 2, bounds2d.getY(),
-            minSize, bounds2d.getHeight());
+                minSize, bounds2d.getHeight());
       if (bounds2d.getHeight() < minSize)
         bounds2d = new Rectangle2D.Double(bounds2d.getX(), bounds2d.getCenterY() - minSize / 2,
-            bounds2d.getWidth(), minSize);
+                bounds2d.getWidth(), minSize);
 
       shapes.add(new Area(new Ellipse2D.Double(bounds2d.getX(), bounds2d.getY(),
-          bounds2d.getWidth(), bounds2d.getHeight())));
+              bounds2d.getWidth(), bounds2d.getHeight())));
     }
 
     // AreaUtils.crunchAreas(shapes, null);

diylc/diylc-core/src/main/java/org/diylc/presenter/G2DWrapper.java

@@ -62,7 +62,6 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
-
 import org.diylc.common.ObjectCache;
 import org.diylc.common.ZoomableStroke;
 import org.diylc.core.IDrawingObserver;
@@ -70,7 +69,7 @@ import org.diylc.core.IDrawingObserver;
 /**
  * {@link Graphics2D} wrapper that keeps track of all drawing actions and creates an {@link Area}
  * that corresponds to drawn objects. Before each component is drawn,
- * {@link #startedDrawingComponent()} should be called. After the component is drawn, area may be
+ * {@link #startedDrawingComponent(int)} ()} should be called. After the component is drawn, area may be
  * retrieved using {@link #finishedDrawingComponent()}. Graphics configuration (color, font, etc) is
  * reset between each two components.
  *
@@ -107,6 +106,8 @@ class G2DWrapper extends Graphics2D implements IDrawingObserver {
   private double zoom;
   private int zOrder;
 
+  private AffineTransform mirrorTransform;
+
   /**
    * Creates a wrapper around specified {@link Graphics2D} object.
    *
@@ -165,7 +166,7 @@ class G2DWrapper extends Graphics2D implements IDrawingObserver {
     canvasGraphics.setFont(originalFont);
 //    Map<String, Integer> sorted = sortByComparator(trackingStacks, false);
     return new ComponentArea(zOrder,currentArea, new ArrayList<Area>(continuityPositiveAreas.values()),
-        new ArrayList<Area>(continuityNegativeAreas.values()));
+            new ArrayList<Area>(continuityNegativeAreas.values()));
   }
 
   // start - used for caching
@@ -221,6 +222,10 @@ class G2DWrapper extends Graphics2D implements IDrawingObserver {
     continuityMarker = marker;
   }
 
+  public void setMirrorTransform(AffineTransform mirrorTransform) {
+    this.mirrorTransform = mirrorTransform;
+  }
+
   /**
    * Appends shape interior to the current component area.
    *
@@ -345,22 +350,73 @@ class G2DWrapper extends Graphics2D implements IDrawingObserver {
 
   @Override
   public void drawString(String str, int x, int y) {
-    canvasGraphics.drawString(str, x, y);
+    this.drawString(str, (float)x, (float)y);
-    if (drawingComponent && trackingAllowed) {
-      FontMetrics fontMetrics = canvasGraphics.getFontMetrics();
-      Rectangle2D rect = fontMetrics.getStringBounds(str, canvasGraphics);
-      Point2D point = new Point2D.Double(x, y);
-      // currentTx.transform(point, point);
-      Rectangle2D finalRec =
-          new Rectangle2D.Double(rect.getX() + point.getX(), rect.getY() + point.getY(), rect.getWidth(),
-              rect.getHeight());
-      appendShape(finalRec);
-    }
   }
 
   @Override
   public void drawString(String str, float x, float y) {
-    canvasGraphics.drawString(str, x, y);
+    if (this.mirrorTransform == null) {
+      canvasGraphics.drawString(str, x, y);
+    } else {
+      drawStringUnmirrored(str, x, y);
+    }
+    handleDrawString(str, x, y);
+  }
+
+  private void drawStringUnmirrored(String str, float x, float y) {
+    // Save the current transform (T), which includes the mirror.
+    AffineTransform originalTransform = new AffineTransform(getTransform());
+
+    // Compute the non-mirrored transform A by "canceling" the mirror:
+    // Since T = A ? M and M is self-inverse, we have A = T ? M.
+    AffineTransform nonMirroredTransform = new AffineTransform(originalTransform);
+    nonMirroredTransform.concatenate(mirrorTransform);
+
+    GlyphVector gv = getFont().createGlyphVector(this.getFontRenderContext(), str);
+    Rectangle2D visualBounds = gv.getVisualBounds();
+    // Use a temporary Graphics2D (with transform A) to obtain correct FontMetrics.
+    Graphics2D gTemp = (Graphics2D) canvasGraphics.create();
+    gTemp.setTransform(nonMirroredTransform);
+    FontMetrics fm = gTemp.getFontMetrics();
+    double textWidth  = fm.stringWidth(str);
+    // Use ascent + descent as the bounding box height.
+    double textHeight = visualBounds.getHeight();//fm.getAscent() + fm.getDescent();
+    double ascent     = fm.getAscent();
+    gTemp.dispose();
+
+    // 1. Compute the center of the text?s bounding box in the mirrored (T) space.
+    Point2D centerMirrored = new Point2D.Double(x + textWidth / 2.0,
+            y + textHeight / 2.0);
+
+    // 2. Convert that center to screen coordinates using the original transform T.
+    Point2D centerScreen = originalTransform.transform(centerMirrored, null);
+
+    // 3. Map the screen coordinate into the non-mirrored coordinate system (A).
+    Point2D centerNonMirrored;
+    try {
+      centerNonMirrored = nonMirroredTransform.createInverse().transform(centerScreen, null);
+    } catch (NoninvertibleTransformException e) {
+      e.printStackTrace();
+      centerNonMirrored = centerMirrored; // Fallback if inversion fails.
+    }
+
+    // 4. Compute the new top-left in A so that the bounding box (width x height)
+    //     remains centered at centerNonMirrored.
+    double newTopLeftX = centerNonMirrored.getX() - textWidth / 2.0;
+    double newTopLeftY = centerNonMirrored.getY() - textHeight / 2.0;
+    // Adjust for the baseline (drawString uses the baseline for y)
+    float drawX = (float) newTopLeftX;
+    float drawY = (float) (newTopLeftY + ascent);
+
+    // 5. Set the transform to the non-mirrored transform (A) so that mirror is canceled.
+    canvasGraphics.setTransform(nonMirroredTransform);
+    canvasGraphics.drawString(str, drawX, drawY);
+
+    // 6. Restore the original transform.
+    setTransform(originalTransform);
+  }
+
+  private void handleDrawString(String str, float x, float y) {
     if (drawingComponent && trackingAllowed) {
       FontMetrics fontMetrics = canvasGraphics.getFontMetrics();
       Rectangle2D rect = fontMetrics.getStringBounds(str, canvasGraphics);
@@ -599,14 +655,14 @@ class G2DWrapper extends Graphics2D implements IDrawingObserver {
 
   @Override
   public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2,
-      ImageObserver observer) {
+                           ImageObserver observer) {
     // FIXME: map
     return canvasGraphics.drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, observer);
   }
 
   @Override
   public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2,
-      Color bgcolor, ImageObserver observer) {
+                           Color bgcolor, ImageObserver observer) {
     // FIXME: map
     return drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, bgcolor, observer);
   }
@@ -760,9 +816,9 @@ class G2DWrapper extends Graphics2D implements IDrawingObserver {
 
   @SuppressWarnings("unused")
   private static Map<String, Integer> sortByComparator(Map<String, Integer> unsortMap,
-      final boolean order) {
+                                                       final boolean order) {
     List<Entry<String, Integer>> list =
-        new LinkedList<Entry<String, Integer>>(unsortMap.entrySet());
+            new LinkedList<Entry<String, Integer>>(unsortMap.entrySet());
 
     // Sorting the list based on values
     Collections.sort(list, new Comparator<Entry<String, Integer>>() {

diylc/diylc-library/src/main/java/org/diylc/components/boards/AbstractBoard.java

@@ -28,14 +28,15 @@ import java.awt.Graphics2D;
 import java.awt.geom.Point2D;
 import java.awt.geom.Rectangle2D;
 import org.diylc.appframework.miscutils.ConfigurationManager;
-
 import org.diylc.awt.StringUtils;
 import org.diylc.common.HorizontalAlignment;
 import org.diylc.common.IPlugInPort;
 import org.diylc.common.ObjectCache;
 import org.diylc.common.VerticalAlignment;
 import org.diylc.components.AbstractTransparentComponent;
+import org.diylc.core.BoardUndersideDisplay;
 import org.diylc.core.ComponentState;
+import org.diylc.core.IBoard;
 import org.diylc.core.IDrawingObserver;
 import org.diylc.core.Project;
 import org.diylc.core.VisibilityPolicy;
@@ -43,9 +44,10 @@ import org.diylc.core.annotations.EditableProperty;
 import org.diylc.core.measures.Size;
 import org.diylc.core.measures.SizeUnit;
 
-public abstract class AbstractBoard extends AbstractTransparentComponent<String> {
+public abstract class AbstractBoard extends AbstractTransparentComponent<String> implements IBoard {
 
   private static final long serialVersionUID = 1L;
+  public static final Size DEFAULT_UNDERSIDE_OFFSET = new Size(0.1, SizeUnit.in);
 
   public static Color BORDER_COLOR = PHENOLIC_COLOR.darker();
   public static Color COORDINATE_COLOR = Color.gray.brighter();
@@ -56,7 +58,7 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
   protected String value = "";
   // two control points used for controlling the position
   protected Point2D[] controlPoints = new Point2D[] {new Point2D.Double(0, 0),
-      new Point2D.Double(DEFAULT_WIDTH.convertToPixels(), DEFAULT_HEIGHT.convertToPixels())};
+          new Point2D.Double(DEFAULT_WIDTH.convertToPixels(), DEFAULT_HEIGHT.convertToPixels())};
   // top-left and bottom-right points
   protected Point2D.Double firstPoint = new Point2D.Double();
   protected Point2D.Double secondPoint = new Point2D.Double();
@@ -74,9 +76,12 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
   protected Size width;
   protected BoardSizingMode mode = BoardSizingMode.TwoPoints;
 
+  protected BoardUndersideDisplay boardUndersideDisplay = BoardUndersideDisplay.NONE;
+  protected Size undersideOffset = DEFAULT_UNDERSIDE_OFFSET;
+
   @Override
   public void draw(Graphics2D g2d, ComponentState componentState, boolean outlineMode, Project project,
-      IDrawingObserver drawingObserver) {
+                   IDrawingObserver drawingObserver) {
     g2d.setStroke(ObjectCache.getInstance().fetchBasicStroke(1));
 
     Point2D finalSecondPoint = getFinalSecondPoint();
@@ -95,7 +100,7 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
     // tracked so far.
     drawingObserver.stopTracking();
     g2d.setColor(componentState == ComponentState.SELECTED || componentState == ComponentState.DRAGGING ? SELECTION_COLOR
-        : borderColor);
+            : borderColor);
     g2d.drawRect((int)firstPoint.getX(), (int)firstPoint.getY(), (int)(finalSecondPoint.getX() - firstPoint.getX()), (int)(finalSecondPoint.getY() - firstPoint.getY()));
   }
 
@@ -105,7 +110,7 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
       finalSecondPoint = secondPoint;
     else
       finalSecondPoint = new Point2D.Double(firstPoint.getX() + getLength().convertToPixels(),
-         firstPoint.getY() + getWidth().convertToPixels());
+              firstPoint.getY() + getWidth().convertToPixels());
     return finalSecondPoint;
   }
 
@@ -126,28 +131,28 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
       double y = firstPoint.getY();
 
       if (origin == CoordinateOrigin.Top_Left || origin == CoordinateOrigin.Top_Right) {
-    	range = (int) ((finalSecondPoint.getY() - firstPoint.getY() + halfSpace) / spacing);
+        range = (int) ((finalSecondPoint.getY() - firstPoint.getY() + halfSpace) / spacing);
-    	yOffset = spacing;
+        yOffset = spacing;
       } else {
-    	range = (int) ((finalSecondPoint.getY() - firstPoint.getY() + halfSpace) / spacing);
+        range = (int) ((finalSecondPoint.getY() - firstPoint.getY() + halfSpace) / spacing);
-    	yOffset = -spacing;
+        yOffset = -spacing;
-    	y = finalSecondPoint.getY();
+        y = finalSecondPoint.getY();
       }
 
       for (int c = 1; c < range; c++) {
-    	int xOffset = (yType == CoordinateType.Numbers && c >= 10) || (yType == CoordinateType.Letters && c >= 27) ? 0 : 2;
+        int xOffset = (yType == CoordinateType.Numbers && c >= 10) || (yType == CoordinateType.Letters && c >= 27) ? 0 : 2;
-    	String label = yType == CoordinateType.Letters ? getCoordinateLabel(c) : Integer.toString(c);
+        String label = yType == CoordinateType.Letters ? getCoordinateLabel(c) : Integer.toString(c);
 
-    	y += yOffset;
+        y += yOffset;
 
-    	StringUtils.drawCenteredText(g2d, label, 
+        StringUtils.drawCenteredText(g2d, label,
-    		firstPoint.getX() + xOffset, y, 
+                firstPoint.getX() + xOffset, y,
-    		HorizontalAlignment.LEFT, VerticalAlignment.CENTER);
+                HorizontalAlignment.LEFT, VerticalAlignment.CENTER);
-    	if (getCoordinateDisplay() == CoordinateDisplay.Both_Sides) {
+        if (getCoordinateDisplay() == CoordinateDisplay.Both_Sides) {
-    	  StringUtils.drawCenteredText(g2d, label, 
+          StringUtils.drawCenteredText(g2d, label,
-    	      finalSecondPoint.getX() - xOffset, y, 
+                  finalSecondPoint.getX() - xOffset, y,
-    		  HorizontalAlignment.RIGHT, VerticalAlignment.CENTER);
+                  HorizontalAlignment.RIGHT, VerticalAlignment.CENTER);
-    	}
+        }
       }
     }
 
@@ -172,12 +177,12 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
         x += xOffset;
 
         StringUtils.drawCenteredText(g2d, label,
-            x, firstPoint.getY() + 2, 
+                x, firstPoint.getY() + 2,
-            HorizontalAlignment.CENTER, VerticalAlignment.BOTTOM);
+                HorizontalAlignment.CENTER, VerticalAlignment.BOTTOM);
         if (getCoordinateDisplay() == CoordinateDisplay.Both_Sides) {
           StringUtils.drawCenteredText(g2d, label,
-              x, (int) (finalSecondPoint.getY() - COORDINATE_FONT_SIZE), 
+                  x, (int) (finalSecondPoint.getY() - COORDINATE_FONT_SIZE),
-              HorizontalAlignment.CENTER, VerticalAlignment.BOTTOM);
+                  HorizontalAlignment.CENTER, VerticalAlignment.BOTTOM);
         }
       }
     }
@@ -250,13 +255,13 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
 
   @EditableProperty(name = "Coordinate Origin")
   public CoordinateOrigin getCoordinateOrigin() {
-	  if (coordinateOrigin == null)
+    if (coordinateOrigin == null)
-		  coordinateOrigin = CoordinateOrigin.Top_Left;
+      coordinateOrigin = CoordinateOrigin.Top_Left;
-	  return coordinateOrigin;
+    return coordinateOrigin;
   }
 
   public void setCoordinateOrigin(CoordinateOrigin coordinateOrigin) {
-	  this.coordinateOrigin = coordinateOrigin;
+    this.coordinateOrigin = coordinateOrigin;
   }
 
   @EditableProperty(name = "Y")
@@ -294,9 +299,9 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
   public void setControlPoint(Point2D point, int index) {
     controlPoints[index].setLocation(point);
     firstPoint.setLocation(Math.min(controlPoints[0].getX(), controlPoints[1].getX()),
-        Math.min(controlPoints[0].getY(), controlPoints[1].getY()));
+            Math.min(controlPoints[0].getY(), controlPoints[1].getY()));
     secondPoint.setLocation(Math.max(controlPoints[0].getX(), controlPoints[1].getX()),
-        Math.max(controlPoints[0].getY(), controlPoints[1].getY()));
+            Math.max(controlPoints[0].getY(), controlPoints[1].getY()));
   }
 
   @EditableProperty
@@ -329,7 +334,7 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
     if (getMode() == BoardSizingMode.Explicit && length != null && width != null) {
       setControlPoint(firstPoint, 0);
       Point2D second = new Point2D.Double(firstPoint.getX() + length.convertToPixels(),
-          firstPoint.getY() + width.convertToPixels());
+              firstPoint.getY() + width.convertToPixels());
       setControlPoint(second, 1);
     }
     this.length = length;
@@ -364,11 +369,50 @@ public abstract class AbstractBoard extends AbstractTransparentComponent<String>
     this.mode = mode;
   }
 
+  @EditableProperty(name = "Underside Display")
+  @Override
+  public BoardUndersideDisplay getBoardUndersideDisplay() {
+    if (this.boardUndersideDisplay == null) {
+      this.boardUndersideDisplay = BoardUndersideDisplay.NONE;
+    }
+    return this.boardUndersideDisplay;
+  }
+
+  public void setBoardUndersideDisplay(BoardUndersideDisplay boardUndersideDisplay) {
+    this.boardUndersideDisplay = boardUndersideDisplay;
+  }
+
+  @EditableProperty(name = "Underside Offset")
+  @Override
+  public Size getUndersideOffset() {
+    if (undersideOffset == null) {
+      undersideOffset = DEFAULT_UNDERSIDE_OFFSET;
+    }
+    return undersideOffset;
+  }
+
+  public void setUndersideOffset(Size undersideOffset) {
+    this.undersideOffset = undersideOffset;
+  }
+
+  @Override
+  public Rectangle2D getBoardRectangle() {
+    Point2D finalSecondPoint = getFinalSecondPoint();
+
+    return new Rectangle2D.Double(firstPoint.getX(), firstPoint.getY(),
+            finalSecondPoint.getX() - firstPoint.getX(), finalSecondPoint.getY() - firstPoint.getY());
+  }
+
+  @Override
+  public boolean shouldExportToGerber() {
+    return false;
+  }
+
   @Override
   public Rectangle2D getCachingBounds() {
     Point2D finalSecondPoint = getFinalSecondPoint();
     return new Rectangle2D.Double(Math.min(firstPoint.getX(), finalSecondPoint.getX()) - 2, Math.min(firstPoint.getY(), finalSecondPoint.getY()) - 2,
-        Math.abs(finalSecondPoint.getX() - firstPoint.getX()) + 4, Math.abs(finalSecondPoint.getY() - firstPoint.getY()) + 4);
+            Math.abs(finalSecondPoint.getX() - firstPoint.getX()) + 4, Math.abs(finalSecondPoint.getY() - firstPoint.getY()) + 4);
   }
 
   public static enum CoordinateType {

diylc/diylc-library/src/main/java/org/diylc/components/boards/BlankBoard.java

@@ -28,7 +28,6 @@ import java.awt.Graphics2D;
 import java.awt.Shape;
 import java.awt.geom.Point2D;
 import java.awt.geom.Rectangle2D;
-
 import org.diylc.common.ObjectCache;
 import org.diylc.components.transform.SimpleComponentTransformer;
 import org.diylc.core.ComponentState;
@@ -38,12 +37,11 @@ import org.diylc.core.Project;
 import org.diylc.core.annotations.BomPolicy;
 import org.diylc.core.annotations.ComponentDescriptor;
 import org.diylc.core.annotations.EditableProperty;
-import org.diylc.core.gerber.IGerberBoard;
 
 @ComponentDescriptor(name = "Blank Board", category = "Boards", author = "Branislav Stojkovic",
-    zOrder = IDIYComponent.BOARD, instanceNamePrefix = "Board", description = "Blank circuit board",
+        zOrder = IDIYComponent.BOARD, instanceNamePrefix = "Board", description = "Blank circuit board",
-    bomPolicy = BomPolicy.SHOW_ONLY_TYPE_NAME, autoEdit = false, transformer = SimpleComponentTransformer.class)
+        bomPolicy = BomPolicy.SHOW_ONLY_TYPE_NAME, autoEdit = false, transformer = SimpleComponentTransformer.class)
-public class BlankBoard extends AbstractBoard implements IGerberBoard {
+public class BlankBoard extends AbstractBoard {
 
   private static final long serialVersionUID = 1L;
 
@@ -60,12 +58,12 @@ public class BlankBoard extends AbstractBoard implements IGerberBoard {
 
   @Override
   public void draw(Graphics2D g2d, ComponentState componentState, boolean outlineMode, Project project,
-      IDrawingObserver drawingObserver) {    
+                   IDrawingObserver drawingObserver) {
     Point2D finalSecondPoint = getFinalSecondPoint();
 
     Shape clip = g2d.getClip();
     if (checkPointsClipped(clip) && !clip.contains(firstPoint.getX(), finalSecondPoint.getY())
-        && !clip.contains(finalSecondPoint.getX(), firstPoint.getY())) {
+            && !clip.contains(finalSecondPoint.getX(), firstPoint.getY())) {
       return;
     }
 
@@ -86,7 +84,7 @@ public class BlankBoard extends AbstractBoard implements IGerberBoard {
     // tracked so far.
     drawingObserver.stopTracking();
     g2d.setColor(componentState == ComponentState.SELECTED || componentState == ComponentState.DRAGGING ? SELECTION_COLOR
-        : borderColor);
+            : borderColor);
     if (getType() == Type.SQUARE)
       g2d.drawRect((int)firstPoint.getX(), (int)firstPoint.getY(), (int)(finalSecondPoint.getX() - firstPoint.getX()), (int)(finalSecondPoint.getY() - firstPoint.getY()));
     else
@@ -134,6 +132,11 @@ public class BlankBoard extends AbstractBoard implements IGerberBoard {
     return null;
   }
 
+  @Override
+  public boolean shouldExportToGerber() {
+    return true;
+  }
+
   static enum Type {
     ROUND, SQUARE;
 
@@ -142,12 +145,4 @@ public class BlankBoard extends AbstractBoard implements IGerberBoard {
       return name().substring(0, 1) + name().substring(1).toLowerCase();
     }
   }
-
-  @Override
-  public Rectangle2D getBoardRectangle() {
-    Point2D finalSecondPoint = getFinalSecondPoint();
-    
-    return new Rectangle2D.Double(firstPoint.getX(), firstPoint.getY(), 
-        finalSecondPoint.getX() - firstPoint.getX(), finalSecondPoint.getY() - firstPoint.getY());    
-  }
 }

diylc/diylc-swing/dict.txt

@@ -583,6 +583,8 @@ Tubular Beveled
 Two
 Type
 Ultra-miniature
+Underside Display
+Underside Offset
 Underside Pad Color
 Underside Trace Color
 Undo