Show and hide each individual layer

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

@@ -72,6 +72,11 @@ public enum EventType {
    * layers. All layers not included are considered unlocked.
    */
   LAYER_STATE_CHANGED,
+  /**
+   * Called when a layer visibility is changed. The first parameter is a set of indices of hidden
+   * layers. All layers not included are considered visible.
+   */
+  LAYER_VISIBILITY_CHANGED,
   /**
    * Called to update the status message. New status message is passed as a first parameter.
    */

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

@@ -254,6 +254,15 @@ public interface IPlugInPort extends ISelectionProcessor, IMouseProcessor, IKeyP
    */
   void setLayerLocked(int layerZOrder, boolean locked);
   
+  /**
+   * Shows or hides the specified layer. All components within +- 0.5 range will be affected by
+   * the change as well.
+   * 
+   * @param layerZOrder
+   * @param visible
+   */
+  void setLayerVisibility(int layerZOrder, boolean visible);
+
   /**
    * @return selection size expressed in both inches or centimeters, respectively
    */

diylc/diylc-core/src/org/diylc/core/Project.java

@@ -45,12 +45,14 @@ public class Project implements Serializable {
   private List<IDIYComponent<?>> components;
   private Set<Set<IDIYComponent<?>>> groups;
   private Set<Integer> lockedLayers;
+  private Set<Integer> hiddenLayers;
   private Font font = DEFAULT_FONT;
 
   public Project() {
     components = new ArrayList<IDIYComponent<?>>();
     groups = new HashSet<Set<IDIYComponent<?>>>();
     lockedLayers = new HashSet<Integer>();
+    hiddenLayers = new HashSet<Integer>();
     title = DEFAULT_TITLE;
     author = System.getProperty("user.name");
     width = DEFAULT_WIDTH;
@@ -135,6 +137,12 @@ public class Project implements Serializable {
     return lockedLayers;
   }
   
+  public Set<Integer> getHiddenLayers() {
+    if (hiddenLayers == null)
+      hiddenLayers = new HashSet<Integer>();
+    return hiddenLayers;
+  }
+
   public VersionNumber getFileVersion() {
     return fileVersion;
   }
@@ -261,6 +269,7 @@ public class Project implements Serializable {
     project.setHeight(this.getHeight());
     project.setWidth(this.getWidth());
     project.getLockedLayers().addAll(this.getLockedLayers());
+    project.getHiddenLayers().addAll(this.getHiddenLayers());
 
     Map<IDIYComponent<?>, IDIYComponent<?>> cloneMap = new HashMap<IDIYComponent<?>, IDIYComponent<?>>();
 

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

@@ -189,7 +189,7 @@ public class Presenter implements IPlugInPort {
         return Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);
       }
       for (IDIYComponent<?> component : currentProject.getComponents()) {
-        if (!isComponentLocked(component)) {
+        if (!isComponentLocked(component) && isComponentVisible(component)) {
           Area area = drawingManager.getComponentArea(component);
           if (area != null && area.contains(scaledPoint)) {
             return Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);
@@ -219,6 +219,7 @@ public class Presenter implements IPlugInPort {
     messageDispatcher.dispatchMessage(EventType.PROJECT_LOADED, project, freshStart);
     messageDispatcher.dispatchMessage(EventType.REPAINT);
     messageDispatcher.dispatchMessage(EventType.LAYER_STATE_CHANGED, currentProject.getLockedLayers());
+    messageDispatcher.dispatchMessage(EventType.LAYER_VISIBILITY_CHANGED, currentProject.getHiddenLayers());
   }
 
   @Override
@@ -374,9 +375,16 @@ public class Presenter implements IPlugInPort {
     return autoCreators;
   }
 
+  @SuppressWarnings({"unchecked"})
+  private boolean isComponentVisible(IDIYComponent<?> component) {
+    ComponentType componentType =
+        ComponentProcessor.getInstance().extractComponentTypeFrom(
+            (Class<? extends IDIYComponent<?>>) component.getClass());
+    return !currentProject.getHiddenLayers().contains((int) Math.round(componentType.getZOrder()));
+  }
 
   @Override
-  public void draw(Graphics2D g2d, Set<DrawOption> drawOptions, IComponentFiler filter) {
+  public void draw(Graphics2D g2d, Set<DrawOption> drawOptions, final IComponentFiler filter) {
     if (currentProject == null) {
       return;
     }
@@ -387,6 +395,16 @@ public class Presenter implements IPlugInPort {
         groupedComponents.add(component);
       }
     }
+
+    // Concatenate the specified filter with our own filter that removes hidden layers
+    IComponentFiler newFiler = new IComponentFiler() {
+
+      @Override
+      public boolean testComponent(IDIYComponent<?> component) {
+        return (filter == null || filter.testComponent(component)) && isComponentVisible(component);
+      }
+    };
+
     // Don't draw the component in the slot if both control points
     // match.
     List<IDIYComponent<?>> componentSlotToDraw;
@@ -402,7 +420,7 @@ public class Presenter implements IPlugInPort {
                 g2d,
                 currentProject,
                 drawOptions,
-                filter,
+                newFiler,
                 selectionRect,
                 selectedComponents,
                 getLockedComponents(),
@@ -433,7 +451,8 @@ public class Presenter implements IPlugInPort {
     List<IDIYComponent<?>> components = drawingManager.findComponentsAt(point, currentProject);
     Iterator<IDIYComponent<?>> iterator = components.iterator();
     while (iterator.hasNext()) {
-      if (isComponentLocked(iterator.next())) {
+      IDIYComponent<?> component = iterator.next();
+      if (isComponentLocked(component) || !isComponentVisible(component)) {
         iterator.remove();
       }
     }
@@ -530,8 +549,8 @@ public class Presenter implements IPlugInPort {
               List<IDIYComponent<?>> newSelection = new ArrayList<IDIYComponent<?>>();
               for (IDIYComponent<?> component : componentSlot) {
                 addComponent(component, true);
-                // Select the new component if it's not locked.
+                // Select the new component if it's not locked and invisible.
-                if (!isComponentLocked(component)) {
+                if (!isComponentLocked(component) && isComponentVisible(component)) {
                   newSelection.add(component);
                 }
               }
@@ -933,7 +952,7 @@ public class Presenter implements IPlugInPort {
         // Do not process a control point if it's already in the map and
         // if it's locked.
         if ((!controlPointMap.containsKey(component) || !controlPointMap.get(component).contains(i))
-            && !isComponentLocked(component)) {
+            && !isComponentLocked(component) && isComponentVisible(component)) {
           if (component.isControlPointSticky(i)) {
             boolean componentMatches = false;
             for (Map.Entry<IDIYComponent<?>, Set<Integer>> entry : controlPointMap.entrySet()) {
@@ -1315,7 +1334,7 @@ public class Presenter implements IPlugInPort {
       }
       List<IDIYComponent<?>> newSelection = new ArrayList<IDIYComponent<?>>();
       for (IDIYComponent<?> component : currentProject.getComponents()) {
-        if (!isComponentLocked(component)) {
+        if (!isComponentLocked(component) && isComponentVisible(component)) {
           Area area = drawingManager.getComponentArea(component);
           if ((area != null) && (selectionRect != null) && area.intersects(selectionRect)) {
             newSelection.addAll(findAllGroupedComponents(component));
@@ -1438,6 +1457,19 @@ public class Presenter implements IPlugInPort {
     messageDispatcher.dispatchMessage(EventType.LAYER_STATE_CHANGED, currentProject.getLockedLayers());
   }
 
+  @Override
+  public void setLayerVisibility(int layerZOrder, boolean visible) {
+    LOG.info(String.format("setLayerVisibility(%s, %s)", layerZOrder, visible));
+    if (visible) {
+      currentProject.getHiddenLayers().remove(layerZOrder);
+    } else {
+      currentProject.getHiddenLayers().add(layerZOrder);
+    }
+    updateSelection(EMPTY_SELECTION);
+    messageDispatcher.dispatchMessage(EventType.REPAINT);
+    messageDispatcher.dispatchMessage(EventType.LAYER_VISIBILITY_CHANGED, currentProject.getHiddenLayers());
+  }
+
   @SuppressWarnings("unchecked")
   @Override
   public void sendSelectionToBack() {

diylc/diylc-swing/src/org/diylc/swing/plugins/layers/LayersMenuPlugin.java

@@ -22,10 +22,12 @@ public class LayersMenuPlugin implements IPlugIn {
 
   private IPlugInPort plugInPort;
   private Map<Layer, Action> lockActionMap;
+  private Map<Layer, Action> visibleActionMap;
   private Map<Integer, Action> selectAllActionMap;
 
   public LayersMenuPlugin(ISwingUI swingUI) {
     lockActionMap = new HashMap<Layer, Action>();
+    visibleActionMap = new HashMap<Layer, Action>();
     selectAllActionMap = new HashMap<Integer, Action>();
     for (Layer layer : Layer.values()) {
       final int zOrder = layer.getZOrder();
@@ -36,12 +38,25 @@ public class LayersMenuPlugin implements IPlugIn {
         @Override
         public void actionPerformed(ActionEvent e) {
           LayersMenuPlugin.this.plugInPort.setLayerLocked(zOrder, (Boolean) getValue(Action.SELECTED_KEY));
-          selectAllActionMap.get(zOrder).setEnabled(!(Boolean) getValue(Action.SELECTED_KEY));
+//          selectAllActionMap.get(zOrder).setEnabled(!(Boolean) getValue(Action.SELECTED_KEY));
         }
       };
       lockAction.putValue(IView.CHECK_BOX_MENU_ITEM, true);
       lockActionMap.put(layer, lockAction);
       
+      AbstractAction visibleAction = new AbstractAction("Visible") {
+
+        private static final long serialVersionUID = 1L;
+
+        @Override
+        public void actionPerformed(ActionEvent e) {
+          LayersMenuPlugin.this.plugInPort.setLayerVisibility(zOrder, getValue(Action.SELECTED_KEY) == null ? true : (Boolean) getValue(Action.SELECTED_KEY));
+//          selectAllActionMap.get(zOrder).setEnabled(!(Boolean) getValue(Action.SELECTED_KEY));
+        }
+      };
+      visibleAction.putValue(IView.CHECK_BOX_MENU_ITEM, true);
+      visibleActionMap.put(layer, visibleAction);
+
       AbstractAction selectAllAction = new AbstractAction("Select All") {
 
         private static final long serialVersionUID = 1L;
@@ -54,6 +69,7 @@ public class LayersMenuPlugin implements IPlugIn {
       selectAllActionMap.put(zOrder, selectAllAction);
 
       swingUI.injectSubmenu(layer.title, null, LOCK_LAYERS_TITLE);
+      swingUI.injectMenuAction(visibleAction, layer.title);
       swingUI.injectMenuAction(lockAction, layer.title);
       swingUI.injectMenuAction(selectAllAction, layer.title);
     }
@@ -66,7 +82,7 @@ public class LayersMenuPlugin implements IPlugIn {
 
   @Override
   public EnumSet<EventType> getSubscribedEventTypes() {
-    return EnumSet.of(EventType.LAYER_STATE_CHANGED);
+    return EnumSet.of(EventType.LAYER_STATE_CHANGED, EventType.LAYER_VISIBILITY_CHANGED);
   }
 
   @SuppressWarnings("unchecked")
@@ -77,6 +93,11 @@ public class LayersMenuPlugin implements IPlugIn {
       for (Layer layer : Layer.values()) {
         lockActionMap.get(layer).putValue(Action.SELECTED_KEY, lockedLayers.contains(layer.getZOrder()));
       }
+    } else if (eventType == EventType.LAYER_VISIBILITY_CHANGED) {
+      Set<Integer> hiddenLayers = (Set<Integer>) params[0];
+      for (Layer layer : Layer.values()) {
+        visibleActionMap.get(layer).putValue(Action.SELECTED_KEY, !hiddenLayers.contains(layer.getZOrder()));
+      }
     }    
   }
 

diylc/diylc-swing/update.xml

@@ -1702,6 +1702,10 @@
 			<releaseDate>2017-04-20 20:00:00.000 CET</releaseDate>
 			<name></name>
 			<changes>
+				<org.diylc.appframework.update.Change>
+					<changeType>NEW_FEATURE</changeType>
+					<description>Show and hide each individual layer</description>
+				</org.diylc.appframework.update.Change>		
 				<org.diylc.appframework.update.Change>
 					<changeType>NEW_FEATURE</changeType>
 					<description>Red ticks on both rulers mark selection bounds, blue tick tracks cursor position</description>