1
|
1 /* DocuImage -- General image interface class
|
|
2
|
|
3 Digital Image Library servlet components
|
|
4
|
|
5 Copyright (C) 2001, 2002 Robert Casties (robcast@mail.berlios.de)
|
|
6
|
|
7 This program is free software; you can redistribute it and/or modify it
|
|
8 under the terms of the GNU General Public License as published by the
|
|
9 Free Software Foundation; either version 2 of the License, or (at your
|
|
10 option) any later version.
|
|
11
|
|
12 Please read license.txt for the full details. A copy of the GPL
|
|
13 may be found at http://www.gnu.org/copyleft/lgpl.html
|
|
14
|
|
15 You should have received a copy of the GNU General Public License
|
|
16 along with this program; if not, write to the Free Software
|
|
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
18
|
|
19 */
|
|
20
|
|
21 package digilib.image;
|
|
22
|
|
23 import javax.servlet.*;
|
|
24 import javax.servlet.http.*;
|
|
25 import java.io.*;
|
|
26 import java.util.*;
|
|
27
|
|
28 import java.awt.image.*;
|
|
29 import java.awt.image.renderable.*;
|
|
30
|
|
31 import digilib.*;
|
|
32 import digilib.io.*;
|
|
33
|
|
34 public interface DocuImage {
|
|
35
|
|
36 public String[] getKnownFileTypes();
|
|
37
|
|
38 /**
|
|
39 * send an image file as-is
|
|
40 */
|
|
41 public void sendFile(File f, ServletResponse res) throws FileOpException;
|
|
42
|
|
43 /**
|
|
44 * load image file
|
|
45 */
|
|
46 public void loadImage(File f) throws FileOpException;
|
|
47
|
|
48 /**
|
|
49 * write image with mime type mt to Stream
|
|
50 */
|
|
51 public void writeImage(String mt, ServletResponse res) throws FileOpException;
|
|
52
|
|
53 /**
|
|
54 * get the image height and width
|
|
55 */
|
|
56 public int getWidth();
|
|
57 public int getHeight();
|
|
58
|
|
59 /**
|
|
60 * crop and scale image
|
|
61 * take rectangle width,height at position x_off,y_off
|
|
62 * and scale by scale with interpolation quality qual (0=worst)
|
|
63 */
|
|
64 public void cropAndScale(
|
|
65 int x_off, int y_off,
|
|
66 int width, int height,
|
|
67 float scale, int qual) throws ImageOpException;
|
|
68 }
|