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Add client support for geo URIs

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git-svn-id: https://zxing.googlecode.com/svn/trunk@285 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
srowen 2008-03-17 15:16:59 +00:00
parent fab1e27971
commit 444ec0b00f
3 changed files with 51 additions and 5 deletions
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8
android/src/com/google/zxing/client/android/ResultHandler.java
View file

@ -26,6 +26,7 @@ import com.google.zxing.client.result.AddressBookDoCoMoResult;
import com.google.zxing.client.result.BookmarkDoCoMoResult;
import com.google.zxing.client.result.EmailAddressResult;
import com.google.zxing.client.result.EmailDoCoMoResult;
import com.google.zxing.client.result.GeoParsedResult;
import com.google.zxing.client.result.ParsedReaderResult;
import com.google.zxing.client.result.ParsedReaderResultType;
import com.google.zxing.client.result.UPCParsedResult;
@ -103,6 +104,13 @@ final class ResultHandler extends Handler {
} catch (URISyntaxException e) {
return;
}
} else if (type.equals(ParsedReaderResultType.GEO)) {
GeoParsedResult geoResult = (GeoParsedResult) result;
try {
intent = new Intent(Intent.SENDTO_ACTION, new ContentURI(geoResult.getGoogleMapsURI()));
} catch (URISyntaxException e) {
return;
}
} else if (type.equals(ParsedReaderResultType.UPC)) {
UPCParsedResult upcResult = (UPCParsedResult) result;
try {

40
core/src/com/google/zxing/client/result/GeoParsedResult.java
View file

@ -19,7 +19,8 @@ package com.google.zxing.client.result;
import com.google.zxing.Result;
/**
* Represents a "geo:" URI result. See
* Represents a "geo:" URI result, which specifices a location on the surface of
* the Earth as well as an optional altitude above the surface. See
* <a href="http://tools.ietf.org/html/draft-mayrhofer-geo-uri-00">
* http://tools.ietf.org/html/draft-mayrhofer-geo-uri-00</a>.
*
@ -57,7 +58,7 @@ public final class GeoParsedResult extends ParsedReaderResult {
float latitude = Float.parseFloat(rawText.substring(0, latitudeEnd));
int longitudeEnd = rawText.indexOf(',', latitudeEnd + 1);
float longitude;
float altitude;
float altitude; // in meters
if (longitudeEnd < 0) {
longitude = Float.parseFloat(rawText.substring(latitudeEnd + 1));
altitude = 0.0f;
@ -94,9 +95,42 @@ public final class GeoParsedResult extends ParsedReaderResult {
result.append(latitude);
result.append("deg N, ");
result.append(longitude);
result.append("deg E, ");
result.append("deg E");
if (altitude > 0.0f) {
result.append(", ");
result.append(altitude);
result.append('m');
}
return result.toString();
}
/**
* @return a URI link to Google Maps which display the point on the Earth described
* by this instance, and sets the zoom level in a way that roughly reflects the
* altitude, if specified
*/
public String getGoogleMapsURI() {
StringBuffer result = new StringBuffer(50);
result.append("http://maps.google.com/?ll=");
result.append(latitude);
result.append(',');
result.append(longitude);
if (altitude > 0.0f) {
// Map altitude to zoom level, cleverly. Roughly, zoom level 19 is like a
// view from 1000ft, 18 is like 2000ft, 17 like 4000ft, and so on.
float altitudeInFeet = altitude * 3.28f;
int altitudeInKFeet = (int) (altitudeInFeet / 1000.0f);
// No Math.log() available here, so compute log base 2 the old fashioned way
// Here logBaseTwo will take on a value between 0 and 18 actually
int logBaseTwo = 0;
while (altitudeInKFeet > 1 && logBaseTwo < 18) {
altitudeInKFeet >>= 1;
logBaseTwo++;
}
int zoom = 19 - logBaseTwo;
result.append("&z=");
result.append(zoom);
}
return result.toString();
}

4
javame/src/com/google/zxing/client/j2me/ZXingMIDlet.java
View file

@ -20,6 +20,7 @@ import com.google.zxing.Result;
import com.google.zxing.client.result.BookmarkDoCoMoResult;
import com.google.zxing.client.result.EmailAddressResult;
import com.google.zxing.client.result.EmailDoCoMoResult;
import com.google.zxing.client.result.GeoParsedResult;
import com.google.zxing.client.result.ParsedReaderResult;
import com.google.zxing.client.result.ParsedReaderResultType;
import com.google.zxing.client.result.UPCParsedResult;
@ -207,6 +208,9 @@ public final class ZXingMIDlet extends MIDlet {
} else if (type.equals(ParsedReaderResultType.EMAIL_ADDRESS)) {
String email = ((EmailAddressResult) result).getEmailAddress();
showOpenURL("Compose E-mail?", email, "mailto:" + email);
} else if (type.equals(ParsedReaderResultType.GEO)) {
GeoParsedResult geoResult = (GeoParsedResult) result;
showOpenURL("Open In Google Maps?", geoResult.getDisplayResult(), geoResult.getGoogleMapsURI());
} else if (type.equals(ParsedReaderResultType.UPC)) {
String upc = ((UPCParsedResult) result).getUPC();
String uri = "http://www.upcdatabase.com/item.asp?upc=" + upc;