altosuilib: Rewrite map GUI bits

[fw/altos] / altosuilib / AltosUIMapImage.java

diff --git a/altosuilib/AltosUIMapImage.java b/altosuilib/AltosUIMapImage.java
new file mode 100644 (file)
index 0000000..3819d07
--- /dev/null
+++ b/altosuilib/AltosUIMapImage.java
@@ -0,0 +1,113 @@
+/*
+ * 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 org.altusmetrum.altosuilib_2;
+
+import javax.swing.*;
+import javax.imageio.ImageIO;
+import java.awt.image.*;
+import java.awt.*;
+import java.io.*;
+import java.net.*;
+
+public class AltosUIMapImage implements AltosUIMapStoreListener {
+       static final long google_maps_ratelimit_ms = 1200;
+       // Google limits static map queries to 50 per minute per IP, so
+       // each query should take at least 1.2 seconds.
+
+       static final int        success = 0;
+       static final int        loading = 1;
+       static final int        failed = 2;
+       static final int        bad_request = 3;
+       static final int        forbidden = 4;
+
+       static long             forbidden_time;
+       static boolean          forbidden_set = false;
+       static final long       forbidden_interval = 60l * 1000l * 1000l * 1000l;
+
+       AltosUIMapTile          tile;           /* Notify when image has been loaded */
+       Image                   image;
+       AltosUIMapStore         store;
+       long                    used;
+
+       class loader implements Runnable {
+               public void run() {
+                       if (image != null)
+                               tile.notify_image(image);
+                       try {
+                               image = ImageIO.read(store.file);
+                       } catch (Exception ex) {
+                       }
+                       if (image == null)
+                               tile.set_status(failed);
+                       else
+                               tile.set_status(success);
+                       tile.notify_image(image);
+               }
+       }
+
+       private void load() {
+               loader  l = new loader();
+               Thread  lt = new Thread(l);
+               lt.start();
+       }
+
+       public void flush() {
+               if (image != null) {
+                       image.flush();
+                       image = null;
+               }
+       }
+
+       public boolean has_map() {
+               return store.status() == AltosUIMapStore.success;
+       }
+
+       public synchronized void notify_store(AltosUIMapStore store, int status) {
+               switch (status) {
+               case AltosUIMapStore.loading:
+                       break;
+               case AltosUIMapStore.success:
+                       load();
+                       break;
+               default:
+                       tile.set_status(status);
+                       tile.notify_image(null);
+               }
+       }
+
+       public AltosUIMapImage(AltosUIMapTile tile, AltosUIMapStore store) throws IOException {
+               this.tile = tile;
+               this.image = null;
+               this.store = store;
+               this.used = 0;
+
+               int status = store.status();
+               switch (status) {
+               case AltosUIMapStore.loading:
+                       store.add_listener(this);
+                       break;
+               case AltosUIMapStore.success:
+                       load();
+                       break;
+               default:
+                       tile.set_status(status);
+                       tile.notify_image(null);
+                       break;
+               }
+       }
+}