X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fexport%2FImagePrinter.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fexport%2FImagePrinter.java;h=0b3e6c7237ecb2c87dd74377a280c07aaa34bf78;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git
diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/export/ImagePrinter.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/export/ImagePrinter.java
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+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/export/ImagePrinter.java
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+package org.simantics.diagram.export;
+
+import java.awt.Point;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.util.concurrent.Semaphore;
+import java.util.concurrent.atomic.AtomicReference;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.SubMonitor;
+import org.simantics.Simantics;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.ResourceArray;
+import org.simantics.db.common.request.PossibleIndexRoot;
+import org.simantics.db.common.request.UniqueRead;
+import org.simantics.db.common.utils.NameUtils;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.exception.ValidationException;
+import org.simantics.db.management.ISessionContext;
+import org.simantics.diagram.elements.DiagramNodeUtil;
+import org.simantics.g2d.canvas.ICanvasContext;
+import org.simantics.g2d.canvas.impl.CanvasContext;
+import org.simantics.g2d.chassis.ICanvasChassis;
+import org.simantics.g2d.chassis.SWTChassis;
+import org.simantics.g2d.participant.TransformUtil;
+import org.simantics.g2d.scenegraph.ICanvasSceneGraphProvider;
+import org.simantics.g2d.scenegraph.SceneGraphConstants;
+import org.simantics.modeling.ModelingResources;
+import org.simantics.scenegraph.g2d.nodes.NavigationNode;
+import org.simantics.scenegraph.utils.NodeUtil;
+import org.simantics.structural2.StructuralVariables;
+import org.simantics.utils.DataContainer;
+import org.simantics.utils.datastructures.Pair;
+import org.simantics.utils.threads.AWTThread;
+import org.simantics.utils.threads.IThreadWorkQueue;
+import org.simantics.utils.threads.ThreadUtils;
+import org.simantics.utils.threads.WorkerThread;
+
+public class ImagePrinter {
+
+ public static class ImageExportPlan {
+ public File exportLocation;
+ public String name;
+ public Resource diagram;
+
+ // use dpi or size, not both.
+ public Double dpi;
+ public Point size;
+ public double margin;
+ }
+
+ /**
+ * @param monitor
+ * the progress monitor to use for reporting progress to the
+ * user. It is the caller's responsibility to call done() on the
+ * given monitor. Accepts null, indicating that no
+ * progress should be reported and that the operation cannot be
+ * cancelled.
+ *
+ * @param exportPath
+ * @throws Exception
+ */
+ public static BufferedImage printToImage(IProgressMonitor monitor, ImageExportPlan exportPlan) throws Exception {
+
+
+ SubMonitor progress = SubMonitor.convert(monitor, "Export to Image", 1);
+
+ WorkerThread workerThread = new WorkerThread("Diagram Image Painter");
+ workerThread.start();
+ String loc;
+ if (exportPlan.exportLocation == null)
+ loc = "clipboard";
+ else
+ loc = exportPlan.exportLocation.getAbsolutePath();
+ progress.beginTask("Writing " + exportPlan.name + " to " + loc, 1);
+
+ return render(workerThread, Simantics.getSessionContext(), exportPlan);
+
+
+ }
+
+ /**
+ * Renders diagram to BufferedImage
+ *
+ * @param thread
+ * @param sessionContext
+ * @param exportPlan
+ * @return
+ * @throws Exception
+ */
+ public static BufferedImage render(
+ final IThreadWorkQueue thread,
+ final ISessionContext sessionContext,
+ final ImageExportPlan exportPlan)
+ throws Exception
+ {
+ final DataContainer result = new DataContainer(null);
+ final DataContainer exception = new DataContainer();
+
+ final CanvasContext ctx = new CanvasContext(thread);
+ final AtomicReference sgProvider = new AtomicReference();
+
+ try {
+ final Semaphore done = new Semaphore(0);
+ // IMPORTANT: Load diagram in a different thread than the canvas context thread!
+ ThreadUtils.getBlockingWorkExecutor().execute(new Runnable() {
+ @Override
+ public void run() {
+ try {
+ Pair modelAndRVI = sessionContext.getSession().syncRequest(new UniqueRead>() {
+ @Override
+ public Pair perform(ReadGraph graph) throws DatabaseException {
+ return new Pair( resolveModel(graph, exportPlan.diagram ), resolveRVI(graph, exportPlan.diagram) );
+ }
+ });
+
+ ICanvasSceneGraphProvider provider = DiagramNodeUtil.loadSceneGraphProvider(ctx, modelAndRVI.first, exportPlan.diagram, modelAndRVI.second);
+ sgProvider.set( provider );
+
+ ThreadUtils.asyncExec(thread, new Runnable() {
+ @Override
+ public void run() {
+ try {
+ ImageBuilder chassis = new ImageBuilder(exportPlan.exportLocation,exportPlan.dpi,exportPlan.size,exportPlan.margin);
+
+ result.set(chassis.paint(ctx));
+ } catch (Exception e) {
+ exception.set(e);
+ } finally {
+ done.release();
+ }
+ }
+ });
+ } catch (DatabaseException e) {
+ done.release();
+ exception.set(e);
+ } catch (Throwable e) {
+ done.release();
+ exception.set(new DatabaseException(e));
+ } finally {
+ done.release();
+ }
+ }
+ });
+
+ done.acquire(2);
+ if (exception.get() != null)
+ throw exception.get();
+ return result.get();
+ } finally {
+ if (sgProvider.get() != null)
+ sgProvider.get().dispose();
+ ctx.dispose();
+ }
+ }
+
+ /**
+ * Renders diagram to BufferedImage using existing CanvasContext.
+ *
+ * Note: While the method tries to restore setting as they were, there may be visible side effects in the diagram.
+ *
+ * @param context
+ * @param chassis
+ * @param exportPlan
+ * @return
+ * @throws Exception
+ */
+ public static BufferedImage renderLocal(final ICanvasContext context, final ICanvasChassis chassis, final ImageExportPlan exportPlan) throws Exception {
+ final Semaphore done = new Semaphore(0);
+ final DataContainer result = new DataContainer(null);
+ final DataContainer exception = new DataContainer(null);
+ ThreadUtils.asyncExec(AWTThread.getThreadAccess(), new Runnable() {
+
+ @Override
+ public void run() {
+ try {
+ result.set(renderLocal(context, exportPlan, chassis));
+ } catch (Exception e) {
+ exception.set(e);
+ } finally {
+ done.release();
+ }
+ }
+ });
+ done.acquire();
+ if (exception.get() != null)
+ throw exception.get();
+ return result.get();
+ }
+
+ private static BufferedImage renderLocal(ICanvasContext context, ImagePrinter.ImageExportPlan exportPlan, ICanvasChassis chassis) throws Exception {
+ TransformUtil util = context.getSingleItem(TransformUtil.class);
+ AffineTransform at = util.getTransform();
+ final NavigationNode node = NodeUtil.findNodeById(context.getSceneGraph(), SceneGraphConstants.NAVIGATION_NODE_PATH);
+ boolean adapt = true;
+ if (node != null) {
+ adapt = node.getAdaptViewportToResizedControl();
+ // prevent NavigationNode from re-scaling when it detects canvas size change.
+ node.setAdaptViewportToResizedControl(false);
+ }
+
+ ImageBuilder builder = new ImageBuilder(exportPlan.exportLocation,exportPlan.dpi,exportPlan.size,exportPlan.margin);
+ BufferedImage image = builder.paint(context);
+
+ util.setTransform(at);
+
+
+ if (node != null && adapt != false) {
+ if (chassis instanceof SWTChassis) {
+ ((SWTChassis) chassis).getAWTComponent().repaint();
+ }
+ // restore re-scaling setting (need to be scheduled, so that Diagram canvas is re-painted once.
+ final boolean b = adapt;
+ ThreadUtils.asyncExec(AWTThread.getThreadAccess(), new Runnable() {
+ @Override
+ public void run() {
+ node.setAdaptViewportToResizedControl(b);
+ }
+ });
+ }
+
+ return image;
+ }
+
+
+
+ private static Resource resolveModel(ReadGraph graph, Resource diagram) throws DatabaseException {
+ ModelingResources mod = ModelingResources.getInstance(graph);
+ Resource composite = graph.getSingleObject(diagram, mod.DiagramToComposite);
+ Resource model = graph.syncRequest(new PossibleIndexRoot(composite));
+ if (model == null)
+ throw new ValidationException("no model found for composite " + NameUtils.getSafeName(graph, composite));
+ return model;
+ }
+
+
+
+ private static String resolveRVI(ReadGraph graph, Resource diagram) throws DatabaseException {
+ ModelingResources mod = ModelingResources.getInstance(graph);
+ Resource composite = graph.getSingleObject(diagram, mod.DiagramToComposite);
+ final ResourceArray compositePath = StructuralVariables.getCompositeArray(graph, composite);
+ final ResourceArray variablePath = compositePath.removeFromBeginning(1);
+ return StructuralVariables.getRVI(graph, variablePath);
+ }
+
+
+}