X-Git-Url: https://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Fdata%2FPhoto.java;h=c9046743a704ca2629e8341ebef1d4497f878384;hb=f35b6d628f68e3b5ef19965ad8988d0dd1eb8efa;hp=52743f7a34659d40bd6aebb46b85759b0b524902;hpb=23959e65a6a0d581e657b07186d18b7a1ac5afeb;p=GpsPrune.git

diff --git a/tim/prune/data/Photo.java b/tim/prune/data/Photo.java
index 52743f7..c904674 100644
--- a/tim/prune/data/Photo.java
+++ b/tim/prune/data/Photo.java
@@ -1,17 +1,22 @@
 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
  */
-public class Photo
+public class Photo extends MediaFile
 {
-	/** File where photo is stored */
-	private File _file = null;
-	/** Associated DataPoint if correlated */
-	private DataPoint _dataPoint = null;
-
+	/** Size of original image */
+	private Dimension _size = null;
+	/** 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;
 
 	/**
 	 * Constructor
@@ -19,45 +24,110 @@ public class Photo
 	 */
 	public Photo(File inFile)
 	{
-		_file = inFile;
-		// TODO: Cache photo file contents to allow thumbnail preview
+		super(inFile, null);
+	}
+
+	/**
+	 * 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;
+	}
 
 	/**
-	 * @return File object where photo resides
+	 * @return byte array of thumbnail data
 	 */
-	public File getFile()
+	public byte[] getExifThumbnail()
 	{
-		return _file;
+		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
+	}
 
 	/**
-	 * Set the data point associated with the photo
-	 * @param inPoint DataPoint with coordinates etc
+	 * @param inRotation initial rotation value (from exif)
 	 */
-	public void setDataPoint(DataPoint inPoint)
+	public void setRotation(int inRotation)
 	{
-		_dataPoint = inPoint;
+		if (inRotation >= 0 && inRotation <= 3) {
+			_rotation = inRotation;
+		}
 	}
 
 	/**
-	 * @return the DataPoint object
+	 * Rotate the image by 90 degrees
+	 * @param inRight true to rotate right, false for left
 	 */
-	public DataPoint getDataPoint()
+	public void rotate(boolean inRight)
 	{
-		return _dataPoint;
+		int dir = inRight?1:3;
+		_rotation = (_rotation + dir) % 4;
 	}
 
 	/**
-	 * Check if a Photo object refers to the same File as another
-	 * @param inOther other Photo object
-	 * @return true if the Files are the same
+	 * @return rotation status
 	 */
-	public boolean equals(Photo inOther)
+	public int getRotationDegrees()
 	{
-		return (inOther != null && inOther.getFile() != null && getFile() != null
-			&& inOther.getFile().equals(getFile()));
+		return _rotation * 90;
 	}
 }