summaryrefslogtreecommitdiff
path: root/japi/ImageCanvas.java
diff options
context:
space:
mode:
authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /japi/ImageCanvas.java
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'japi/ImageCanvas.java')
-rw-r--r--japi/ImageCanvas.java110
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);
+ }
+ }