altosui: Display full map preload area in view.

This involved fixing the map view to support arbitrary sizes, and then
exposing a synchronous tile loading API so that the progress bar could
be used to show tile loading progress.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/altosui/AltosSiteMapCache.java b/altosui/AltosSiteMapCache.java
index 2e62cc45..cfad52a9 100644
--- a/altosui/AltosSiteMapCache.java
+++ b/altosui/AltosSiteMapCache.java
@@ -37,6 +37,7 @@ public class AltosSiteMapCache extends JLabel {
 		try {
 			u = new URL(url);
 		} catch (java.net.MalformedURLException e) {
+			System.out.printf("Malformed URL '%s'\n", url);
 			return false;
 		}
 
@@ -57,9 +58,12 @@ public class AltosSiteMapCache extends JLabel {
 			in.close();
 
 			if (offset != contentLength) {
+				System.out.printf("Bad length %d != %d\n",
+						  offset, contentLength);
 				return false;
 			}
 		} catch (IOException e) {
+			System.out.printf("IO exception reading URL\n");
 			return false;
 		}
 
@@ -69,11 +73,13 @@ public class AltosSiteMapCache extends JLabel {
 			out.flush();
 			out.close();
 		} catch (FileNotFoundException e) {
+			System.out.printf("Can't create file\n");
 			return false;
 		} catch (IOException e) {
 			if (file.exists()) {
 				file.delete();
 			}
+			System.out.printf("IO exception writing file\n");
 			return false;
 		}
 		return true;