Version 11, August 2010

[GpsPrune.git] / tim / prune / data / Photo.java

diff --git a/tim/prune/data/Photo.java b/tim/prune/data/Photo.java
index 52743f7a34659d40bd6aebb46b85759b0b524902..7ffe35dec984511a6de8d7e522cb1aa25b4c7932 100644 (file)
--- a/tim/prune/data/Photo.java
+++ b/tim/prune/data/Photo.java
@@ -1,7 +1,10 @@
 package tim.prune.data;
 
+import java.awt.Dimension;
 import java.io.File;
 
+import javax.swing.ImageIcon;
+
 /**
  * Class to represent a photo and link to DataPoint
  */
@@ -9,9 +12,31 @@ public class Photo
 {
        /** File where photo is stored */
        private File _file = null;
+       /** Timestamp, if any */
+       private Timestamp _timestamp = null;
        /** Associated DataPoint if correlated */
        private DataPoint _dataPoint = null;
+       /** Size of original image */
+       private Dimension _size = null;
+       /** Status of photo when loaded */
+       private Status _originalStatus = Status.NOT_CONNECTED;
+       /** Current photo status */
+       private Status _currentStatus = Status.NOT_CONNECTED;
+       /** rotation flag (clockwise from 0 to 3) */
+       private int _rotation = 0;
+       // TODO: Need to store caption for image?
+       // thumbnail for image (from exif)
+       private byte[] _exifThumbnail = null;
 
+       /** Photo status */
+       public enum Status {
+               /** Photo is not connected to any point */
+               NOT_CONNECTED,
+               /** Photo has been connected to a point since it was loaded */
+               TAGGED,
+               /** Photo is connected to a point */
+               CONNECTED
+       };
 
        /**
         * Constructor
@@ -20,7 +45,6 @@ public class Photo
        public Photo(File inFile)
        {
                _file = inFile;
-               // TODO: Cache photo file contents to allow thumbnail preview
        }
 
 
@@ -40,6 +64,13 @@ public class Photo
        public void setDataPoint(DataPoint inPoint)
        {
                _dataPoint = inPoint;
+               // set status according to point
+               if (inPoint == null) {
+                       setCurrentStatus(Status.NOT_CONNECTED);
+               }
+               else {
+                       setCurrentStatus(Status.CONNECTED);
+               }
        }
 
        /**
@@ -50,6 +81,139 @@ public class Photo
                return _dataPoint;
        }
 
+       /**
+        * @param inTimestamp Timestamp of photo
+        */
+       public void setTimestamp(Timestamp inTimestamp)
+       {
+               _timestamp = inTimestamp;
+       }
+
+       /**
+        * @return timestamp of photo
+        */
+       public Timestamp getTimestamp()
+       {
+               return _timestamp;
+       }
+
+       /**
+        * Calculate the size of the image (slow)
+        */
+       private void calculateSize()
+       {
+               ImageIcon icon = new ImageIcon(_file.getAbsolutePath());
+               int width = icon.getIconWidth();
+               int height = icon.getIconHeight();
+               if (width > 0 && height > 0)
+               {
+                       _size = new Dimension(width, height);
+               }
+       }
+
+       /**
+        * @return size of image as Dimension object
+        */
+       public Dimension getSize()
+       {
+               if (_size == null)
+               {
+                       calculateSize();
+               }
+               return _size;
+       }
+
+       /**
+        * @return width of the image, if known
+        */
+       public int getWidth()
+       {
+               if (_size == null)
+               {
+                       calculateSize();
+                       if (_size == null) {return -1;}
+               }
+               return _size.width;
+       }
+
+       /**
+        * @return height of the image, if known
+        */
+       public int getHeight()
+       {
+               if (_size == null)
+               {
+                       calculateSize();
+                       if (_size == null) {return -1;}
+               }
+               return _size.height;
+       }
+
+       /**
+        * @param inStatus status of photo when loaded
+        */
+       public void setOriginalStatus(Status inStatus)
+       {
+               _originalStatus = inStatus;
+               _currentStatus = inStatus;
+       }
+
+       /**
+        * @return status of photo when it was loaded
+        */
+       public Status getOriginalStatus()
+       {
+               return _originalStatus;
+       }
+
+       /**
+        * @return current status of photo
+        */
+       public Status getCurrentStatus()
+       {
+               return _currentStatus;
+       }
+       /**
+        * @param inStatus current status of photo
+        */
+       public void setCurrentStatus(Status inStatus)
+       {
+               _currentStatus = inStatus;
+       }
+
+       /**
+        * @return true if photo is connected to a point
+        */
+       public boolean isConnected()
+       {
+               return _currentStatus != Status.NOT_CONNECTED;
+       }
+
+       /**
+        * @return byte array of thumbnail data
+        */
+       public byte[] getExifThumbnail()
+       {
+               return _exifThumbnail;
+       }
+
+       /**
+        * @param inBytes byte array from exif
+        */
+       public void setExifThumbnail(byte[] inBytes)
+       {
+               _exifThumbnail = inBytes;
+       }
+
+       /**
+        * Delete the cached data when the Photo is no longer needed
+        */
+       public void resetCachedData()
+       {
+               _size = null;
+               // remove thumbnail too
+       }
+
        /**
         * Check if a Photo object refers to the same File as another
         * @param inOther other Photo object
@@ -60,4 +224,32 @@ public class Photo
                return (inOther != null && inOther.getFile() != null && getFile() != null
                        && inOther.getFile().equals(getFile()));
        }
+
+       /**
+        * @param inRotation initial rotation value (from exif)
+        */
+       public void setRotation(int inRotation)
+       {
+               if (inRotation >= 0 && inRotation <= 3) {
+                       _rotation = inRotation;
+               }
+       }
+
+       /**
+        * Rotate the image by 90 degrees
+        * @param inRight true to rotate right, false for left
+        */
+       public void rotate(boolean inRight)
+       {
+               int dir = inRight?1:3;
+               _rotation = (_rotation + dir) % 4;
+       }
+
+       /**
+        * @return rotation status
+        */
+       public int getRotationDegrees()
+       {
+               return _rotation * 90;
+       }
 }