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support camera zoom during capture with mouse scroll

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This commit is contained in:
Craig Raw 2025-03-13 17:43:55 +02:00
parent 6f6d61fb75
commit f1c4b8aa69
2 changed files with 48 additions and 4 deletions
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39
src/main/java/com/sparrowwallet/sparrow/control/WebcamService.java
View file

@ -15,10 +15,7 @@ import javafx.concurrent.Task;
import javafx.embed.swing.SwingFXUtils;
import javafx.scene.image.Image;
import net.sourceforge.zbar.ZBar;
import org.openpnp.capture.CaptureDevice;
import org.openpnp.capture.CaptureFormat;
import org.openpnp.capture.CaptureStream;
import org.openpnp.capture.OpenPnpCapture;
import org.openpnp.capture.*;
import org.openpnp.capture.library.OpenpnpCaptureLibrary;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -50,6 +47,7 @@ public class WebcamService extends ScheduledService<Image> {
private final OpenPnpCapture capture;
private CaptureStream stream;
private PropertyLimits zoomLimits;
private long lastQrSampleTime;
private final Reader qrReader;
private final Bokmakierie bokmakierie;
@ -151,6 +149,12 @@ public class WebcamService extends ScheduledService<Image> {
stream = device.openStream(format);
opening.set(false);
closed.set(false);
try {
zoomLimits = stream.getPropertyLimits(CaptureProperty.Zoom);
} catch(Throwable e) {
log.debug("Error getting zoom limits on " + device + ", assuming no zoom function");
}
}
BufferedImage originalImage = stream.capture();
@ -177,6 +181,7 @@ public class WebcamService extends ScheduledService<Image> {
@Override
public void reset() {
stream = null;
zoomLimits = null;
super.reset();
}
@ -194,6 +199,32 @@ public class WebcamService extends ScheduledService<Image> {
capture.close();
}
public PropertyLimits getZoomLimits() {
return zoomLimits;
}
public int getZoom() {
if(stream != null && zoomLimits != null) {
try {
return stream.getProperty(CaptureProperty.Zoom);
} catch(Exception e) {
log.error("Error getting zoom property on " + device, e);
}
}
return -1;
}
public void setZoom(int value) {
if(stream != null && zoomLimits != null) {
try {
stream.setProperty(CaptureProperty.Zoom, value);
} catch(Exception e) {
log.error("Error setting zoom property on " + device, e);
}
}
}
private void readQR(BufferedImage wideImage, BufferedImage croppedImage) {
Result result = readQR(wideImage);
if(result == null) {

13
src/main/java/com/sparrowwallet/sparrow/control/WebcamView.java
View file

@ -46,6 +46,19 @@ public class WebcamView {
imageView.setOnContextMenuRequested(event -> {
contextMenu.show(imageView, event.getScreenX(), event.getScreenY());
});
imageView.setOnScroll(scrollEvent -> {
if(service.isRunning() && scrollEvent.getDeltaY() != 0 && service.getZoomLimits() != null) {
int currentZoom = service.getZoom();
if(currentZoom >= 0) {
int newZoom = scrollEvent.getDeltaY() > 0 ? Math.round(currentZoom * 1.1f) : Math.round(currentZoom * 0.9f);
newZoom = Math.max(newZoom, service.getZoomLimits().getMin());
newZoom = Math.min(newZoom, service.getZoomLimits().getMax());
if(newZoom != currentZoom) {
service.setZoom(newZoom);
}
}
}
});
service.valueProperty().addListener((observable, oldValue, newValue) -> {
if(newValue != null) {