diff options
| author | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 | 
|---|---|---|
| committer | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 | 
| commit | 3b612efcd1dddc6a3d59012f7ed57754b1f798c2 (patch) | |
| tree | 18d50713491ef96c5c127a309f870efb6c33f98d /altosui/AltosSiteMapCache.java | |
| parent | e076773c1693e2a62bb828dee71c04c20dbab0a5 (diff) | |
| parent | 01eb36408d7e0e826b431fcc1d3b2deb23607e0b (diff) | |
Merge branch 'new-debian' into debian
Conflicts:
	ChangeLog
	debian/altos.install
	debian/changelog
	debian/control
	debian/copyright
	debian/dirs
	debian/docs
	debian/menu
	debian/rules
	src/Makefile
Diffstat (limited to 'altosui/AltosSiteMapCache.java')
| -rw-r--r-- | altosui/AltosSiteMapCache.java | 104 | 
1 files changed, 104 insertions, 0 deletions
diff --git a/altosui/AltosSiteMapCache.java b/altosui/AltosSiteMapCache.java new file mode 100644 index 00000000..f729a298 --- /dev/null +++ b/altosui/AltosSiteMapCache.java @@ -0,0 +1,104 @@ +/* + * Copyright © 2010 Anthony Towns <aj@erisian.com.au> + * + * 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; version 2 of the License. + * + * 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. + */ + +package altosui; + +import java.awt.*; +import java.awt.image.*; +import java.awt.event.*; +import javax.swing.*; +import javax.imageio.ImageIO; +import javax.swing.table.*; +import java.io.*; +import java.util.*; +import java.text.*; +import java.util.prefs.*; +import java.net.URL; +import java.net.URLConnection; +import org.altusmetrum.AltosLib.*; + +public class AltosSiteMapCache extends JLabel { +	public static boolean fetchMap(File file, String url) { +		URL u; + +		try { +			u = new URL(url); +		} catch (java.net.MalformedURLException e) { +			return false; +		} + +		byte[] data; +		try { +			URLConnection uc = u.openConnection(); +			int contentLength = uc.getContentLength(); +			InputStream in = new BufferedInputStream(uc.getInputStream()); +			int bytesRead = 0; +			int offset = 0; +			data = new byte[contentLength]; +			while (offset < contentLength) { +				bytesRead = in.read(data, offset, data.length - offset); +				if (bytesRead == -1) +					break; +				offset += bytesRead; +			} +			in.close(); + +			if (offset != contentLength) { +				return false; +			} +		} catch (IOException e) { +			return false; +		} + +		try { +			FileOutputStream out = new FileOutputStream(file); +			out.write(data); +			out.flush(); +			out.close(); +		} catch (FileNotFoundException e) { +			return false; +		} catch (IOException e) { +			if (file.exists()) { +				file.delete(); +			} +			return false; +		} +		return true; +	} + +	public static ImageIcon fetchAndLoadMap(File pngfile, String url) { +		if (!pngfile.exists()) { +			if (!fetchMap(pngfile, url)) { +				return null; +			} +		} +		return loadMap(pngfile, url); +	} + +	public static ImageIcon loadMap(File pngfile, String url) { +		if (!pngfile.exists()) { +			return null; +		} + +		try { +			return new ImageIcon(ImageIO.read(pngfile)); +		} catch (IOException e) { +			System.out.printf("# IO error trying to load %s\n", pngfile); +			return null; +		} +	} +}  | 
