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java.lang.Objectuk.ac.starlink.ttools.plot2.paper.PaintPaperType
public abstract class PaintPaperType
Vector paper type abstract superclass. All graphics are painted rather than laid down pixel by pixel, which gives more beautiful results on a non-bitmapped output medium. It may be slower (for large datasets, perhaps much slower) than one of the bitmapped options. Whether it supports transparency depends on whether the graphics context does. In any case the details of the transparency rendering may not be identical to the way it is done by the other paper types, since in some cases they handle the compositing in a non-standard fashion, for instance opacity boost for very transparent points. Note that some of the output may in any case look pixellated when using this output format, if that's how the plot layers have decided to render it (bitmapped decals rather than glyphs).
Constructor Summary | |
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protected |
PaintPaperType(String name,
boolean upLayer)
Constructor. |
Method Summary | |
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Icon |
createDataIcon(Surface surface,
Drawing[] drawings,
Object[] plans,
DataStore dataStore,
boolean cached)
Paints the content of a list of drawing objects onto a given plot surface, and returns the result as an Icon. |
static GraphicsConfiguration |
createHeadlessGraphicsConfig(int imtype)
Returns a graphics configuration that does not rely on a display. |
protected abstract Paper |
createPaper(Graphics g,
Rectangle bounds)
Creates a paper instance for use with this PaperType. |
protected abstract void |
flushPaper(Paper paper)
Called when all the layers have been painted. |
boolean |
isBitmap()
Returns false. |
String |
toString()
|
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface uk.ac.starlink.ttools.plot2.paper.PaperType |
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placeDecal |
Constructor Detail |
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protected PaintPaperType(String name, boolean upLayer)
name
- paper type nameupLayer
- true to render layers in ascending order,
false to do them in descending orderMethod Detail |
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public boolean isBitmap()
isBitmap
in interface PaperType
public Icon createDataIcon(Surface surface, Drawing[] drawings, Object[] plans, DataStore dataStore, boolean cached)
PaperType
The requireCached
argument provides a hint about
whether the output icon will cache computations.
Set this true if you might want to paint the returned icon
multiple times, false if it is one-shot only, or if keeping
the memory footprint small is more important than speed.
In general it's OK to call the paintIcon
method of
the returned object with a null Component
.
The returned icon is the size of the plotBounds
rectangle,
and will be painted at plotBounds.x, plotBounds.y.
It contains everything in that region except perhaps for decorations,
and it is opaque. It does not (cannot) contain external axis labels,
but must contain any internal markings which appear underneath the
data points.
An implementation will usually create a Paper object and pass it
in turn to the supplied drawings
so that the returned
icon can be based on the drawn-on paper.
createDataIcon
in interface PaperType
surface
- plot surfacedrawings
- array of drawing objects to be painted in sequenceplans
- array of plan objects corresponding to the
drawings
array argumentdataStore
- data storage objectcached
- hint about whether to cache the calculation data
protected abstract Paper createPaper(Graphics g, Rectangle bounds)
g
- graphics context to which paper should outputbounds
- plot bounds
protected abstract void flushPaper(Paper paper)
paper
- graphics destinationpublic String toString()
toString
in class Object
public static GraphicsConfiguration createHeadlessGraphicsConfig(int imtype)
imtype
- image type as used by
BufferedImage
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