Resize tooltip (#986)

* resize tooltip

* Fix blank board area rendering

* Fixes

* translations

* Add length

* Update update.xml

diylc/diylc-core/src/main/java/org/diylc/common/EventType.java

@@ -21,7 +21,6 @@
 */
 package org.diylc.common;
 
-import java.awt.Rectangle;
 import java.awt.geom.Point2D;
 
 import org.diylc.core.Project;

diylc/diylc-core/src/main/java/org/diylc/common/IPlugInPort.java

@@ -41,6 +41,7 @@ import org.diylc.core.IDIYComponent;
 import org.diylc.core.Project;
 import org.diylc.core.Template;
 import org.diylc.core.Theme;
+import org.diylc.core.measures.ResizeDimensions;
 import org.diylc.core.measures.Size;
 import org.diylc.filter.IComponentFilter;
 import org.diylc.test.ITestProcessor;
@@ -49,9 +50,9 @@ import org.diylc.test.ITestProcessor;
  * Interface for communication between plug-ins and the application. Plug-ins may acquire
  * information or make changes through this interface. Application events are dispatched to plug-ins
  * through {@link MessageDispatcher}
- * 
+ *
  * @author Branislav Stojkovic
- * 
+ *
  * @see IPlugIn
  * @see MessageDispatcher
  * @see IMessageListener
@@ -86,18 +87,19 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
   public static final String RULER_IN_SUBDIVISION_KEY = "rulerInSubdivision";
   public static final String CACHING_ENABLED_KEY = "cachingEnabled";
   public static final String FONT_SCALE_FACTOR_KEY = "fontScaleFactor";
-  
+  public static final String SHOW_RESIZE_DIMENSIONS_TOOLTIP_KEY = "showResizeDimensionsTooltip";
+
   public static final String RULER_IN_SUBDIVISION_2 = "base of 2";
   public static final String RULER_IN_SUBDIVISION_10 = "base of 10";
   public static final String RULER_IN_SUBDIVISION_DEFAULT = RULER_IN_SUBDIVISION_10;
-  
+
   public static final String SNAP_TO_NONE = "None";
   public static final String SNAP_TO_GRID = "Grid";
   public static final String SNAP_TO_COMPONENTS = "Components";
   public static final String SNAP_TO_DEFAULT = SNAP_TO_GRID;
-  
+
   public static final String LOCKED_ALPHA = "lockedAlpha";
-  
+
   public static final String LANGUAGE = "language";
   public static final String LANGUAGE_DEFAULT = "English";
 
@@ -110,25 +112,25 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
   public static final int NOBUTTON = 0;
   public static final int BUTTON1 = 1;
   public static final int BUTTON2 = 2;
-  public static final int BUTTON3 = 3;  
+  public static final int BUTTON3 = 3;
 
   /**
    * Returns size of the canvas that takes project dimensions into account as well as zoom level.
    * Each dimension is calculated as the product of the actual size and the number of pixels per
    * unit. If <code>useZoom</code> is set to true, the result is scaled by zoom factor.
-   * 
+   *
    * @param useZoom
    * @param includeExtraSpace
-   * 
+   *
    * @return canvas dimensions
    */
   Dimension getCanvasDimensions(boolean useZoom, boolean includeExtraSpace);
 
   /**
    * Returns an instance of {@link Cursor} that should be used at the specified location.
-   * 
+   *
    * Note: point coordinates are scaled for zoom factor.
-   * 
+   *
    * @param point
    * @param ctrlDown
    * @param shiftDown
@@ -139,14 +141,14 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Returns an instance of currently loaded project.
-   * 
+   *
    * @return
    */
   Project getCurrentProject();
 
   /**
    * Loads specified {@link Project}.
-   * 
+   *
    * @param project
    * @param freshStart
    * @param filename file name when loading from a file
@@ -160,22 +162,22 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Loads a project from the specified file.
-   * 
+   *
    * @param fileName
    */
   void loadProjectFromFile(String fileName);
 
   /**
    * Saves the current project into the specified file.
-   * 
+   *
    * @param fileName
    * @param isBackup
    */
   void saveProjectToFile(String fileName, boolean isBackup);
-  
+
   /**
    * Exports the current project into one or more files - one per layer and potentially drill layer.
-   * 
+   *
    * @param fileNameBase
    * @param g2d
    */
@@ -193,7 +195,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Shows a user dialog if there are changes to confirm that it's safe to proceed.
-   * 
+   *
    * @return true, if file actions (new, open, close) can be taken
    */
   boolean allowFileAction();
@@ -202,7 +204,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
    * Returns all available {@link ComponentType}s classified by category. Result is a {@link Map}
    * between category name to a {@link List} of all {@link ComponentType}s that share that category
    * name.
-   * 
+   *
    * @return
    */
   Map<String, List<ComponentType>> getComponentTypes();
@@ -210,7 +212,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
   /**
    * Draws project on the provided {@link Graphics2D}. If the provided filter is not null, it will
    * be used to filter the components that are shown.
-   * 
+   *
    * @param g2d
    * @param drawOptions specific drawing options
    * @param filter
@@ -224,35 +226,35 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Returns current zoom level where <code>zoomLevel = 1.0d</code> means 100%.
-   * 
+   *
    * @return current zoom level
    */
   double getZoomLevel();
 
   /**
    * Changes current zoom level where <code>zoomLevel = 1.0d</code> means 100%
-   * 
+   *
    * @param zoomLevel new zoom leve
    */
   void setZoomLevel(double zoomLevel);
 
   /**
    * Returns current version number.
-   * 
+   *
    * @return
    */
   VersionNumber getCurrentVersionNumber();
-  
+
   /**
-   * Returns few most recent versions. 
-   * 
+   * Returns few most recent versions.
+   *
    * @return
    */
   List<Version> getRecentUpdates();
 
   /**
    * Adds a list of components to the project.
-   * 
+   *
    * @param componentTransferable
    * @param autoGroup
    * @param assignNewNames
@@ -271,7 +273,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Sets default value for the specified property name for currently selected component types.
-   * 
+   *
    * @param propertyName display name for property
    * @param value new default value, must not be null
    */
@@ -279,7 +281,7 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
 
   /**
    * Sets default value for the specified property name for projects.
-   * 
+   *
    * @param clazz class to set defaults to
    * @param propertyName display name for property
    * @param value new default value, must not be null
@@ -293,6 +295,15 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
    */
   List<PropertyWrapper> getMutualSelectionProperties();
 
+  /**
+   * Available only during resizing, returns the dimensions of the component being resized.
+   * Otherwise returns null.
+   *
+   * @return ResizeDimensions with width, height (in mm or in depending on configuration), 
+   *         and length (if component implements IHaveLength), or null if not resizing
+   */
+  ResizeDimensions getResizeDimensions();
+
   void editSelection();
 
   /**

diylc/diylc-core/src/main/java/org/diylc/components/AbstractCurvedComponent.java

@@ -37,16 +37,14 @@ import com.thoughtworks.xstream.annotations.XStreamOmitField;
 import org.diylc.common.IPlugInPort;
 import org.diylc.common.LineStyle;
 import org.diylc.common.ObjectCache;
-import org.diylc.core.ComponentState;
-import org.diylc.core.IDrawingObserver;
-import org.diylc.core.Project;
-import org.diylc.core.VisibilityPolicy;
+import org.diylc.core.*;
 import org.diylc.core.annotations.EditableProperty;
 import org.diylc.core.measures.Size;
 import org.diylc.core.measures.SizeUnit;
 import org.diylc.utils.Constants;
 
-public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComponent<T> {
+public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComponent<T> implements
+    IHaveLength {
 
   private static final long serialVersionUID = 1L;
   
@@ -337,8 +335,8 @@ public abstract class AbstractCurvedComponent<T> extends AbstractTransparentComp
     // }
   }
   
-  @EditableProperty
-  public Size getLength() {
+  @EditableProperty(name = "Length")
+  public Size calculateLength() {
     double d = 0;
       try {
       Point2D[] p = getControlPoints();

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

@@ -0,0 +1,29 @@
+/*
+
+    DIY Layout Creator (DIYLC).
+    Copyright (c) 2009-2025 held jointly by the individual authors.
+
+    This file is part of DIYLC.
+
+    DIYLC is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    DIYLC is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DIYLC.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+package org.diylc.core;
+
+import org.diylc.core.measures.Size;
+
+public interface IHaveLength {
+
+  Size calculateLength();
+}

diylc/diylc-core/src/main/java/org/diylc/core/measures/ResizeDimensions.java

@@ -0,0 +1,33 @@
+/*
+ *
+ *    DIY Layout Creator (DIYLC).
+ *    Copyright (c) 2009-2025 held jointly by the individual authors.
+ *
+ *    This file is part of DIYLC.
+ *
+ *    DIYLC is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation, either version 3 of the License, or
+ *    (at your option) any later version.
+ *
+ *    DIYLC is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with DIYLC.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package org.diylc.core.measures;
+
+/**
+ * Record containing resize dimensions for a component being resized.
+ * 
+ * @param width the width of the component (in mm or in, depending on configuration)
+ * @param height the height of the component (in mm or in, depending on configuration)
+ * @param length the length of the component (if it implements IHaveLength), null otherwise
+ */
+public record ResizeDimensions(Size width, Size height, Size length) {
+}
+

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

@@ -59,16 +59,10 @@ import com.thoughtworks.xstream.security.AnyTypePermission;
 
 import org.diylc.clipboard.ComponentTransferable;
 import org.diylc.common.*;
-import org.diylc.core.ExpansionMode;
-import org.diylc.core.IDIYComponent;
-import org.diylc.core.IDatasheetSupport;
-import org.diylc.core.IView;
-import org.diylc.core.Project;
-import org.diylc.core.Template;
-import org.diylc.core.Theme;
-import org.diylc.core.VisibilityPolicy;
+import org.diylc.core.*;
 import org.diylc.core.annotations.IAutoCreator;
 import org.diylc.core.gerber.GerberExporter;
+import org.diylc.core.measures.ResizeDimensions;
 import org.diylc.core.measures.Size;
 import org.diylc.core.measures.SizeUnit;
 import org.diylc.filter.IComponentFilter;
@@ -928,29 +922,36 @@ public class Presenter implements IPlugInPort {
     messageDispatcher.dispatchMessage(EventType.REPAINT);
   }
 
-  @Override
   public Rectangle2D getSelectionBounds(boolean applyZoom) {
-    if (selectedComponents == null || selectedComponents.isEmpty())
+    return getComponentBounds(selectedComponents, applyZoom);
+  }
+
+  private Rectangle2D getComponentBounds(Collection<IDIYComponent<?>> components, boolean applyZoom) {
+    if (components == null || components.isEmpty())
       return null;
 
     int minX = Integer.MAX_VALUE;
     int maxX = Integer.MIN_VALUE;
     int minY = Integer.MAX_VALUE;
     int maxY = Integer.MIN_VALUE;
-    for (IDIYComponent<?> c : selectedComponents) {
+
+    for (IDIYComponent<?> c : components) {
+
       ComponentArea compArea = drawingManager.getComponentArea(c);
-      if (compArea != null && compArea.getOutlineArea() != null) {
-        Rectangle rect = compArea.getOutlineArea().getBounds();
-        if (rect.x < minX)
-          minX = rect.x;
-        if (rect.x + rect.width > maxX)
-          maxX = rect.x + rect.width;
-        if (rect.y < minY)
-          minY = rect.y;
-        if (rect.y + rect.height > maxY)
-          maxY = rect.y + rect.height;
-      } else if (currentProject.getComponents().contains(c))
+      if (compArea == null || compArea.getOutlineArea() == null) {
         LOG.debug("Area is null for " + c.getName() + " of type " + c.getClass().getName());
+        return null;
+      }
+
+      Rectangle rect = compArea.getOutlineArea().getBounds();
+      if (rect.x < minX)
+        minX = rect.x;
+      if (rect.x + rect.width > maxX)
+        maxX = rect.x + rect.width;
+      if (rect.y < minY)
+        minY = rect.y;
+      if (rect.y + rect.height > maxY)
+        maxY = rect.y + rect.height;
     }
 
     if (configManager.readBoolean(EXTRA_SPACE_KEY, true)) {
@@ -1019,8 +1020,9 @@ public class Presenter implements IPlugInPort {
     }
     updateSelection(matching);    
     messageDispatcher.dispatchMessage(EventType.REPAINT, true);
-    if (matching.size() > 0)
+    if (!matching.isEmpty()) {
       messageDispatcher.dispatchMessage(EventType.SCROLL_TO, getSelectionBounds(true));
+    }
   }
 
   @Override
@@ -1237,11 +1239,14 @@ public class Presenter implements IPlugInPort {
       Map<String, Object> params = new HashMap<String, Object>();
       params.put("point", point);
       test.addStep(DIYTest.DRAG_OVER, params);
-    }    
-    
+    }
+
     if (point == null || operationMode == OperationMode.HIGHLIGHT_CONNECTED_AREAS) {
       return false;
     }
+
+    boolean resizeInProgress = false;
+
     Point2D scaledPoint = scalePoint(point);
     if (controlPointMap != null && !controlPointMap.isEmpty()) {
       // We're dragging control point(s).
@@ -1252,6 +1257,13 @@ public class Presenter implements IPlugInPort {
       if (actualD == null)
         return true;
 
+      // if there's at least one component with only one control point being dragged it means that we are resizing
+      if (controlPointMap.size() == 1 && controlPointMap.entrySet().stream()
+          .anyMatch(entry -> entry.getValue().size() == 1
+              && entry.getKey().getControlPointCount() > 1)) {
+        resizeInProgress = true;
+      }
+
       previousDragPoint.setLocation(previousDragPoint.getX() + actualD.getX(), previousDragPoint.getY() + actualD.getY());
     } else if (selectedComponents.isEmpty() && instantiationManager.getComponentTypeSlot() == null
         && previousDragPoint != null) {
@@ -1269,10 +1281,50 @@ public class Presenter implements IPlugInPort {
       this.previousScaledPoint = scalePoint(point);
       instantiationManager.updateSingleClick(previousScaledPoint, isSnapToGrid(), currentProject.getGridSpacing());
     }
-    messageDispatcher.dispatchMessage(EventType.REPAINT);
+
+    messageDispatcher.dispatchMessage(EventType.REPAINT, false, resizeInProgress);
     return true;
   }
 
+  public ResizeDimensions getResizeDimensions() {
+
+    if (controlPointMap == null || controlPointMap.isEmpty()) {
+      return null;
+    }
+
+    // Find the component being resized (one with a single control point being dragged)
+    IDIYComponent<?> resizingComponent = null;
+    for (Map.Entry<IDIYComponent<?>, Set<Integer>> entry : controlPointMap.entrySet()) {
+      if (entry.getValue().size() == 1 && entry.getKey().getControlPointCount() > 1) {
+        resizingComponent = entry.getKey();
+        break;
+      }
+    }
+
+    if (resizingComponent == null) {
+      return null;
+    }
+
+    Rectangle2D componentBounds = getComponentBounds(controlPointMap.keySet(), false);
+    if (componentBounds == null) {
+      return null;
+    }
+
+    // Convert pixel dimensions to Size (mm or in based on configuration)
+    boolean metric = configManager.readBoolean(METRIC_KEY, true);
+    SizeUnit unit = metric ? SizeUnit.mm : SizeUnit.in;
+    Size width = Size.fromPixels(componentBounds.getWidth(), unit);
+    Size height = Size.fromPixels(componentBounds.getHeight(), unit);
+
+    // Get length if component implements IHaveLength
+    Size length = null;
+    if (resizingComponent instanceof IHaveLength iHaveLength) {
+      length = iHaveLength.calculateLength();
+    }
+
+    return new ResizeDimensions(width, height, length);
+  }
+
   private Point2D moveComponents(Map<IDIYComponent<?>, Set<Integer>> controlPointMap, int dx, int dy, boolean snapToGrid, boolean snapToObjects) {
     // After we make the transfer and snap to grid, calculate actual dx
     // and dy. We'll use them to translate the previous drag point.
@@ -2171,6 +2223,10 @@ public class Presenter implements IPlugInPort {
     }
     Rectangle2D rect = getSelectionBounds(false);
 
+    if (rect == null) {
+      return null;
+    }
+
     double width = rect.getWidth();
     double height = rect.getHeight();
 

diylc/diylc-core/src/main/resources/update.xml

@@ -484,5 +484,21 @@
 			</changes>
 			<url>https://github.com/bancika/diy-layout-creator/releases</url>
 		</org.diylc.appframework.update.Version>
+		<org.diylc.appframework.update.Version>
+			<versionNumber>
+				<major>5</major>
+				<minor>9</minor>
+				<build>0</build>
+			</versionNumber>
+			<releaseDate>2025-12-30 00:00:00.000 CET</releaseDate>
+			<name></name>
+			<changes>
+				<org.diylc.appframework.update.Change>
+					<changeType>NEW_FEATURE</changeType>
+					<description>Added balloon tooltip next to cursor showing component width, height and length (where available) while resizing; can be disabled from Config menu</description>
+				</org.diylc.appframework.update.Change>
+			</changes>
+			<url>https://github.com/bancika/diy-layout-creator/releases</url>
+		</org.diylc.appframework.update.Version>
 	</a>
 </java.util.Arrays_-ArrayList>