From c2ce31e11eefcf1b900c0e9b41264f5d5566dc46 Mon Sep 17 00:00:00 2001
From: Sven Gothel
+ * Implementing {@link javax.media.opengl.GLAutoDrawable GLAutoDrawable} classes based on AWT
+ * supporting {@link Component#print(Graphics)} shall implement this interface.
+ *
+ * Users attempting to print an AWT {@link Container} containing {@link AWTPrintLifecycle} elements
+ * shall consider decorating the {@link Container#printAll(Graphics)} call withImplementations
+ * Usage
+ *
+ * {@link #setupPrint(double, double, int) setupPrint(..)} and {@link #releasePrint()}
+ * on all {@link AWTPrintLifecycle} elements in the {@link Container}.
+ * To minimize this burden, a user can use {@link Context#setupPrint(Container, double, double, int) Context.setupPrint(..)}:
+ *
+ * Graphics2D g2d;
+ * Container cont;
+ * double scaleGLMatXY = 72.0/glDPI;
+ * int numSamples = 0; // leave multisampling as-is
+ * PrinterJob job;
+ * ...
+ final AWTPrintLifecycle.Context ctx = AWTPrintLifecycle.Context.setupPrint(cont, scaleGLMatXY, scaleGLMatXY, numSamples);
+ try {
+ AWTEDTExecutor.singleton.invoke(true, new Runnable() {
+ public void run() {
+ try {
+ job.print();
+ } catch (PrinterException ex) {
+ ex.printStackTrace();
+ }
+ } });
+ } finally {
+ ctx.releasePrint();
+ }
+ *
+ *
+ *
+ * See Usage. + *
+ * @param scaleMatX {@link Graphics2D} {@link Graphics2D#scale(double, double) scaling factor}, i.e. rendering 1/scaleMatX * width pixels + * @param scaleMatY {@link Graphics2D} {@link Graphics2D#scale(double, double) scaling factor}, i.e. rendering 1/scaleMatY * height pixels + * @param numSamples multisampling value: < 0 turns off, == 0 leaves as-is, > 0 enables using given num samples + */ + void setupPrint(double scaleMatX, double scaleMatY, int numSamples); + + /** + * Shall be called after {@link PrinterJob#print()}. + *+ * See Usage. + *
+ */ + void releasePrint(); + + /** + * Convenient {@link AWTPrintLifecycle} context simplifying calling {@link AWTPrintLifecycle#setupPrint(double, double, int) setupPrint(..)} + * and {@link AWTPrintLifecycle#releasePrint()} on all {@link AWTPrintLifecycle} elements of a {@link Container}. + *+ * See Usage. + *
+ */ + public static class Context { + /** + *+ * See Usage. + *
+ * + * @param c container to be traversed through to perform {@link AWTPrintLifecycle#setupPrint(double, double, int) setupPrint(..)} on all {@link AWTPrintLifecycle} elements. + * @param scaleMatX {@link Graphics2D} {@link Graphics2D#scale(double, double) scaling factor}, i.e. rendering 1/scaleMatX * width pixels + * @param scaleMatY {@link Graphics2D} {@link Graphics2D#scale(double, double) scaling factor}, i.e. rendering 1/scaleMatY * height pixels + * @param numSamples multisampling value: < 0 turns off, == 0 leaves as-is, > 0 enables using given num samples + * @return the context + */ + public static Context setupPrint(Container c, double scaleMatX, double scaleMatY, int numSamples) { + final Context t = new Context(c, scaleMatX, scaleMatY, numSamples); + t.setupPrint(c); + return t; + } + + /** + *+ * See Usage. + *
+ */ + public void releasePrint() { + count = AWTMisc.performAction(cont, AWTPrintLifecycle.class, releaseAction); + } + + /** + * @return count of performed actions of last {@link #setupPrint(Container, double, double, int) setupPrint(..)} or {@link #releasePrint()}. + */ + public int getCount() { return count; } + + private final Container cont; + private final double scaleMatX; + private final double scaleMatY; + private final int numSamples; + private int count; + + private final AWTMisc.ComponentAction setupAction = new AWTMisc.ComponentAction() { + @Override + public void run(Component c) { + ((AWTPrintLifecycle)c).setupPrint(scaleMatX, scaleMatY, numSamples); + } }; + private final AWTMisc.ComponentAction releaseAction = new AWTMisc.ComponentAction() { + @Override + public void run(Component c) { + ((AWTPrintLifecycle)c).releasePrint(); + } }; + + private Context(Container c, double scaleMatX, double scaleMatY, int numSamples) { + this.cont = c; + this.scaleMatX = scaleMatX; + this.scaleMatY = scaleMatY; + this.numSamples = numSamples; + this.count = 0; + } + private void setupPrint(Container c) { + count = AWTMisc.performAction(c, AWTPrintLifecycle.class, setupAction); + } + } +} -- cgit v1.2.3