Thank you for that snippet of code Larry. I need to look at it some
more, but I think I understand what is going on. I need to add support
for the built-in renderers for things like the grid and selected
features.
I appreciate the assistance.
The Sunburned Surveyor
On 5/23/07, Larry Becker <[EMAIL PROTECTED]> wrote:
> SS,
>
> public RenderingManager(final LayerViewPanel panel) {
> this.panel = panel;
> repaintTimer.setCoalesce(true);
>
> putAboveLayerables(SelectionBackgroundRenderer.CONTENT_ID,
> new Renderer.Factory() {
> public Renderer create() {
> return new
> SelectionBackgroundRenderer(panel);
> }
> });
> putAboveLayerables(
> FeatureSelectionRenderer.CONTENT_ID,
> new Renderer.Factory() {
> public Renderer create() {
> return new
> FeatureSelectionRenderer(panel);
> }
> });
>
> putAboveLayerables(AuditNonDupSelectionRenderer.CONTENT_ID,
> new Renderer.Factory() {
> public Renderer create() {
> return new
> AuditNonDupSelectionRenderer(panel);
> }
> });
>
> putAboveLayerables(AuditDupSelectionRenderer.CONTENT_ID,
> new Renderer.Factory() {
> public Renderer create() {
> return new
> AuditDupSelectionRenderer(panel);
> }
> });
>
> putAboveLayerables(LineStringSelectionRenderer.CONTENT_ID,
> new Renderer.Factory() {
> public Renderer create() {
> return new
> LineStringSelectionRenderer(panel);
> }
> });
>
> putAboveLayerables(PartSelectionRenderer.CONTENT_ID,
> new Renderer.Factory() {
> public Renderer create() {
> return new PartSelectionRenderer(panel);
> }
> });
> }
>
> regards,
> Larry
>
>
> On 5/23/07, Sunburned Surveyor < [EMAIL PROTECTED]> wrote:
> >
> > I was finally able to figure out why I was getting a
> > NullPointerException in my pluggable rendering code. It is becuase
> > OpenJUMP is attempting to render Java String objects. (At least that
> > is what it looks like to me.)
> >
> > My code returns a NullPointerException when it encounters one of these
> > Strings because I didn't design it to return a Renderer objecct for
> > Strings.
> >
> > Here is how I found out what was happening. I added some logging
> > statements using log4j in the LayerViewPanel.repaint() method. I knew
> > that this was the source of the NullPointerException. I also suspected
> > that OpenJUMP was passing me something other that a Layer or WMSLayer
> > to render. So I modified the LayerViewPanel.repaint() method to loop
> > through the List of ContentIDs, or objects to be rendered. I think
> > printed the class name of each object in the List. After I found out
> > that the objects causing me problems were Strings, I modified the
> > logging statements in the repaint() method to also print out the value
> > of the Strings.
> >
> > The Strings that are present in the List of objects to be rendered
> > when OpenJUMP first starts have the following values:
> >
> > SELECTION_BACKGROUND
> > SELECTED_FEATURES
> > SELECTED_LINESTRINGS
> > SELECTED_PARTS
> > GRID
> > SCALE_SHOW
> > SCALE_BAR
> >
> > Isn't this odd? Those Strings almost look like Constant values. I
> > wonder where in the world they are coming from?
> >
> > I've attached a text file that contains the logging statements I put
> > into the modified LayerViewPanel.repaint() method. I have also
> > attached the log file that contains the text from the logging
> > statements.
> >
> > I can modify my pluggable rendering system to ignore String objects,
> > but I'd really like to know how they end up in the ContentIDs List to
> > begin with. Thank you in advance for any suggestions or insight.
> >
> > The Sunburned Surveyor
> >
> > P.S. - I just found a new friend. His name is log4j. :]
> >
> >
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