Changeset 121 for trunk/src/org/expeditee/items/ItemUtils.java

Timestamp:

07/03/08 16:48:09 (16 years ago)

Author:

bjn8

Message:

Added invalidation for graphics... biiiig commit. LOts of effeciency improvements - now can animate

File:

• trunk/src/org/expeditee/items/ItemUtils.java (modified) (3 diffs)

trunk/src/org/expeditee/items/ItemUtils.java

@@ -2 +2 @@
 
 import java.awt.Color;
+import java.awt.Rectangle;
 import java.awt.image.ImageObserver;
 import java.io.File;
@@ -17 +18 @@
 import org.expeditee.gui.DisplayIO;
 import org.expeditee.gui.Frame;
+import org.expeditee.gui.FreeItems;
 import org.expeditee.gui.Vector;
 import org.expeditee.items.Item.HighlightMode;
+
 
 //Static methods that provide functions for the objects\
@@ -847 +850 @@
         }
 
+        /**
+         * Determines if an item is visible from a the current frame(s).
+         * If the item is free then it is considered visible.
+         * @param i The item to check
+         * @return True if visible/free from given frame.
+         */
+        public static boolean isVisible(Item i) {
+                if (DisplayIO.isTwinFramesOn()) {
+                        if (!isVisible(DisplayIO.getFrames()[0], i)) {
+                                return isVisible(DisplayIO.getFrames()[1], i);
+                        } else {
+                                return true;
+                        }
+                } else  {
+                        return isVisible(DisplayIO.getCurrentFrame(), i);
+                }
+        }
+
+        /**
+         * Determines if an item is visible from a given frame.
+         * If the item is free then it is considered visible.
+         * 
+         * @param fromFrame The frame to check from.
+         * @param i The item to check
+         * @return True if visible/free from given frame.
+         */
+        public static boolean isVisible(Frame fromFrame, Item i) {
+                if (fromFrame == null) return false;
+                
+                Frame parent = i.getParent();
+                
+                if (parent == fromFrame) return true;
+                
+                else if (parent == null) return FreeItems.getInstance().contains(i);
+                
+                return fromFrame.getAllItems().contains(i) && i.isVisible();
+        }
+        
+        public static Rectangle expandRectangle(Rectangle r, int n) {
+                return new Rectangle(r.x - (n >> 1), r.y - (n >> 1), 
+                                r.width + n, r.height + n);
+        }
+        
         /*
          * FrameMouseActions while (!copies.isEmpty()) { Iterator<Item> iterator =