JDK-8190349 : Tooltip based on graphic contented only show less than 1 out of 10 times
- Type: Bug
- Component: javafx
- Sub-Component: web
- Affected Version: 9,10
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2017-10-18
- Updated: 2018-12-03
- Resolved: 2017-11-09
The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 10 |
|---|
10Fixed  |
Related Reports
|
Duplicate :
|
|
|
Duplicate :
|
|
|
Relates :
|
|
|
Relates :
|
Description
FULL PRODUCT VERSION :
java 9
Java(TM) SE Runtime Environment (build 9+181)
Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)
ADDITIONAL OS VERSION INFORMATION :
Windows 10.0.15063 (10 Pro 64-bit)
EXTRA RELEVANT SYSTEM CONFIGURATION :
NVidia GForce GT 730
A DESCRIPTION OF THE PROBLEM :
Tooltips with graphic contect only show up black without any content being shown with the exception of maybe the first tooltip that you pop-up) in Java 9.
This wasn't an issue with any of the Java 8 runtime engines that were released for at least the passed year.
REGRESSION. Last worked in version 8u144
ADDITIONAL REGRESSION INFORMATION:
I don't have Java 8 installed anymore, but was 8 Update 144, and all the versions before it in the passed year or so. In all those versions I never had any problem when using setGraphic straight instead of having to use a workaround (see below)
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Put a WebTooltip (see class below) on a few JavaFX controls (no CSS, just the CSS defaults for a .tooltip already trigger this).
Usually when hovering over the first control, you see the tooltip pop-up as expected, but thereafter on a second or 3 control it goes wrong consistently.
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Expectation: Tooltips should always show.
ACTUAL -
Tooltips show up black without any content, with a possible exception of the first tooltip that you are trying to see.
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.concurrent.Worker;
import javafx.concurrent.Worker.State;
import javafx.event.EventHandler;
import javafx.scene.CacheHint;
import javafx.scene.control.ContentDisplay;
import javafx.scene.control.Tooltip;
import javafx.scene.text.FontSmoothingType;
import javafx.scene.web.WebView;
import javafx.stage.WindowEvent;
import javafx.util.Duration;
public class WebTooltip extends Tooltip {
//Only create WebToolTip on demand using MouseListener and discard after being shown. Underlying JavaFX WebView control burns memory
//continuously, even when Tooltip is not visible (a couple of hundred of these will result in 5..10MB heap-space being claimed). This
//results in high CPU load, and frequent garbage collections that also generate large spikes due to the number of objects that need
//freeing (180 ->80MB free if System.gc() is run every 10 seconds):
public WebTooltip(String text) {
setShowDuration(new Duration(30000)); //unit is ms
final WebView webView = new WebView();
webView.setPrefSize(1024, -1);
webView.setFontSmoothingType(FontSmoothingType.GRAY);
//webView.setDisable(true);
webView.setMouseTransparent(true);
webView.setCache(true);
webView.setCacheHint(CacheHint.QUALITY);
webView.getEngine().loadContent("<html><head><style>td {white-space: nowrap;} body white-space: nowrap; overflow-x: hidden; overflow-y: hidden;}</style></head><body><div id='mydiv' style='overflow:hidden'>" + text + "</div></body></html>"); //This does not immediately trigger the above changed handler
//webView.getEngine().loadContent("<html><head></head><body><div id='mydiv'>testText</div></body></html>"); //This does not immediately trigger the above changed handler
//Switch this label over to display it's content as graphic only: The graphic will be provided by the WebView component:
webView.getEngine().getLoadWorker().stateProperty().addListener(new ChangeListener<State>() {
@Override
public void changed(ObservableValue<? extends State> ov, State oldState, State newState) {
if (newState == Worker.State.SUCCEEDED) { //This adjustsize has different 'margins' then the one in WebLabel!
Object result = webView.getEngine().executeScript("document.getElementById('mydiv').offsetHeight");
if (result instanceof Integer)
webView.setPrefHeight((Integer)result+15);
// offsetWidth can not be used for the next command in WebKit, but scrollWidth seems to do the trick:
result = webView.getEngine().executeScript("document.getElementById('mydiv').scrollWidth");
if (result instanceof Integer)
webView.setPrefWidth((Integer)result + 25);
}
}
});
setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
setGraphic(webView);
}
}
---------- END SOURCE ----------
CUSTOMER SUBMITTED WORKAROUND :
Change the setGraphic() line to:
setOnShown(new EventHandler<WindowEvent>(){
@Override
public void handle(WindowEvent arg0) {
setGraphic(webView);
}
});
Now the tootlips show 100% of the time again.
Comments
|