Initial import of sane-backends version 1.0.24-1.2

1 files changed, 110 insertions, 0 deletions

diff --git a/japi/ImageCanvas.java b/japi/ImageCanvas.java
new file mode 100644
index 0000000..56cf34c
--- /dev/null
+++ b/japi/ImageCanvas.java
@@ -0,0 +1,110 @@
+/* sane - Scanner Access Now Easy.
+   Copyright (C) 1997 Jeffrey S. Freedman
+   This file is part of the SANE package.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.
+
+   As a special exception, the authors of SANE give permission for
+   additional uses of the libraries contained in this release of SANE.
+
+   The exception is that, if you link a SANE library with other files
+   to produce an executable, this does not by itself cause the
+   resulting executable to be covered by the GNU General Public
+   License.  Your use of that executable is in no way restricted on
+   account of linking the SANE library code into it.
+
+   This exception does not, however, invalidate any other reasons why
+   the executable file might be covered by the GNU General Public
+   License.
+
+   If you submit changes to SANE to the maintainers to be included in
+   a subsequent release, you agree by submitting the changes that
+   those changes may be distributed with this exception intact.
+
+   If you write modifications of your own for SANE, it is your choice
+   whether to permit this exception to apply to your modifications.
+   If you do not wish that, delete this exception notice.  */
+
+/**
+ **	ImageCanvas.java - A canvas that displays an image.
+ **
+ **	Written: 11/4/97 - JSF
+ **/
+
+import java.awt.Canvas;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Image;
+import java.awt.image.ImageProducer;
+
+/*
+ *	Here's a canvas that just shows an image.
+ */
+
+public class ImageCanvas extends Canvas
+    {
+    Image image = null;			// The image to display.
+    ImageCanvasClient client = null;	// 1 client for now.
+
+	/*
+	 *	Create with empty image.
+	 */
+    ImageCanvas()
+	{
+	}
+
+	/*
+	 *	Create image from an image producer.
+	 */
+    void setImage(ImageProducer iprod, ImageCanvasClient c)
+	{
+	client = c;
+	image = createImage(iprod);
+	repaint();
+	}
+
+	/*
+	 *	Paint.
+	 */
+    public void paint(Graphics g)
+	{
+	System.out.println("In ImageCanvas.paint()");
+	Dimension dim = getSize();
+	g.drawRect(0, 0, dim.width - 1, dim.height - 1);
+	if (image != null)
+		{
+		g.drawImage(image, 1, 1, dim.width - 2, dim.height - 2, this);
+		}
+	}
+
+	/*
+	 *	Image has been updated.
+	 */
+    public boolean imageUpdate(Image theimg, int infoflags,
+				int x, int y, int w, int h)
+	{
+	System.out.println("In imageUpdate()");
+	boolean done = ((infoflags & (ERROR | FRAMEBITS | ALLBITS)) != 0);
+//	repaint();
+	paint(getGraphics());
+	if (done && client != null)	// Tell client when done.
+		{
+		client.imageDone((infoflags & ERROR) != 0);
+		client = null;
+		}
+	return (!done);
+	}
+    }