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MediaViewIMagePanel thread safety fixes

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This commit is contained in:
Richard Cordovano 2020-09-15 19:44:47 -04:00
parent 87e829556e
commit 2c7663ed16
1 changed files with 17 additions and 14 deletions
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31
Core/src/org/sleuthkit/autopsy/contentviewers/MediaViewImagePanel.java
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@ -124,7 +124,7 @@ class MediaViewImagePanel extends JPanel implements MediaFileViewer.MediaViewPan
private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);
/*
* JFX UI components, must be accessed in JFX thread only.
* Threading policy: JFX UI components, must be accessed in JFX thread only.
*/
@ThreadConfined(type = ThreadConfined.ThreadType.JFX)
private final ProgressBar progressBar = new ProgressBar();
@ -142,7 +142,7 @@ class MediaViewImagePanel extends JPanel implements MediaFileViewer.MediaViewPan
private ScrollPane scrollPane;
/*
* Swing UI components, must be accessed in EDT only.
* Threading policy: Swing UI components, must be accessed in EDT only.
*/
@ThreadConfined(type = ThreadConfined.ThreadType.AWT)
private final JPopupMenu imageTaggingOptions;
@ -160,7 +160,7 @@ class MediaViewImagePanel extends JPanel implements MediaFileViewer.MediaViewPan
private final JFXPanel fxPanel;
/*
* Panel state: currently selected image file.
* Panel state variables threading policy:
*
* imageFile: The loadFile() method kicks off a JFX background task to read
* the content of the currently selected file into a JFX Image object. If
@ -174,7 +174,8 @@ class MediaViewImagePanel extends JPanel implements MediaFileViewer.MediaViewPan
* readImageFileTask: This is a reference to a JFX background task that
* reads the content of the currently selected file into a JFX Image object.
* A reference is maintained so that the task can be cancelled if it is
* running when the selected image file changes.
* running when the selected image file changes. Only accessed in the JFX
* thread.
*
* imageTransforms: These values are mostly written in the EDT based on user
* interactions with Swing components and then read in the JFX thread when
@ -846,15 +847,15 @@ class MediaViewImagePanel extends JPanel implements MediaFileViewer.MediaViewPan
if (direction == ZoomDirection.IN) {
newZoomRatio = zoomImageIn(currentTransforms.getZoomRatio());
} else {
newZoomRatio = zoomImageOut(currentTransforms.getZoomRatio());
newZoomRatio = zoomImageOut(currentTransforms.getZoomRatio());
}
final ImageTransforms newTransforms = new ImageTransforms(newZoomRatio, currentTransforms.getRotation(), false);
imageTransforms = newTransforms;
Platform.runLater(() -> {
updateView(panelWidth, panelHeight, newTransforms);
});
}
});
}
private double zoomImageIn(double zoomRatio) {
double newZoomRatio = zoomRatio;
for (int i = 0; i < ZOOM_STEPS.length; i++) {
@ -862,10 +863,10 @@ class MediaViewImagePanel extends JPanel implements MediaFileViewer.MediaViewPan
newZoomRatio = ZOOM_STEPS[i];
break;
}
}
}
return newZoomRatio;
}
private double zoomImageOut(double zoomRatio) {
double newZoomRatio = zoomRatio;
for (int i = ZOOM_STEPS.length - 1; i >= 0; i--) {
@ -875,8 +876,8 @@ class MediaViewImagePanel extends JPanel implements MediaFileViewer.MediaViewPan
}
}
return newZoomRatio;
}
}
private void zoomResetButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_zoomResetButtonActionPerformed
final ImageTransforms currentTransforms = imageTransforms;
final ImageTransforms newTransforms = new ImageTransforms(0, currentTransforms.getRotation(), true);
@ -1355,8 +1356,10 @@ class MediaViewImagePanel extends JPanel implements MediaFileViewer.MediaViewPan
}
}
private enum ZoomDirection {IN, OUT};
private enum ZoomDirection {
IN, OUT
};
/**
* Records a snapshot of the image transforms specified by the user.
*/