--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
+ * Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.scenegraph.g2d.nodes.connection;\r
+\r
+import java.awt.AlphaComposite;\r
+import java.awt.BasicStroke;\r
+import java.awt.Composite;\r
+import java.awt.Graphics2D;\r
+import java.awt.Stroke;\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.Rectangle2D;\r
+import java.awt.image.BufferedImage;\r
+import java.io.IOException;\r
+import java.net.URL;\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+\r
+import javax.imageio.ImageIO;\r
+\r
+import org.simantics.diagram.connection.RouteGraph;\r
+import org.simantics.diagram.connection.RouteLineHalf;\r
+import org.simantics.diagram.connection.actions.IAction;\r
+import org.simantics.diagram.connection.rendering.IRouteGraphRenderer;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class HighlightActionPointsAction implements IAction {\r
+\r
+ public static enum Action {\r
+ REMOVE,\r
+ RECONNECT\r
+ }\r
+\r
+ public static class Pick {\r
+ public static final Pick MISS = new Pick(null, null);\r
+\r
+ Action action;\r
+ RouteLineHalf line;\r
+\r
+ public Pick(Action action, RouteLineHalf line) {\r
+ this.action = action;\r
+ this.line = line;\r
+ }\r
+\r
+ public boolean hasAction(Action action) {\r
+ return this.action == action;\r
+ }\r
+\r
+ public boolean hasResult() {\r
+ return action != null && line != null;\r
+ }\r
+\r
+ public boolean matches(Action action, RouteLineHalf line) {\r
+ if (this.action == null || this.line == null)\r
+ return false;\r
+ return this.action.equals(action) && this.line.equals(line);\r
+ }\r
+ }\r
+\r
+ static BufferedImage cross;\r
+ static BufferedImage cut;\r
+\r
+ static {\r
+ cross = safeReadImage("cross.png");\r
+ cut = safeReadImage("cut.png");\r
+ }\r
+\r
+ public static final Stroke STROKE = new BasicStroke(0.1f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);\r
+ public static final AlphaComposite COMPOSITE = AlphaComposite.SrcOver.derive(0.6f);\r
+\r
+ public static final double DEGENERATED_LINE_LENGTH = 1;\r
+ public static final double CUT_DIST_FROM_END = 0.5;\r
+\r
+ RouteGraph rg;\r
+\r
+ transient Collection<RouteLineHalf> lhs = new ArrayList<RouteLineHalf>();\r
+ transient AffineTransform transform = new AffineTransform();\r
+ transient AffineTransform transform2 = new AffineTransform();\r
+ transient Rectangle2D rect = new Rectangle2D.Double();\r
+\r
+ public HighlightActionPointsAction(RouteGraph rg) {\r
+ this.rg = rg;\r
+ }\r
+\r
+ public void setRouteGraph(RouteGraph rg) {\r
+ this.rg = rg;\r
+ }\r
+\r
+ @Override\r
+ public void render(Graphics2D g, IRouteGraphRenderer renderer, double mouseX, double mouseY) {\r
+ // Cannot perform cut or delete segment actions on connections between 2\r
+ // terminals.\r
+ boolean simpleConnection = (rg.isSimpleConnection() || rg.getTerminals().size() <= 2);\r
+ boolean branchedConnection = rg.getTerminals().size() > 2;\r
+\r
+ lhs.clear();\r
+ rg.getLineHalves(lhs);\r
+\r
+ AffineTransform preTr = g.getTransform();\r
+ double viewScale = 1.0 / getScale(preTr);\r
+ transform2.setToScale(viewScale, viewScale);\r
+ Composite originalComposite = g.getComposite();\r
+ g.setComposite(COMPOSITE);\r
+\r
+ Pick pick = pickAction(rg, lhs, preTr, mouseX, mouseY);\r
+\r
+ if (!simpleConnection) {\r
+ double crossW = cross.getWidth()*viewScale*.5;\r
+ double crossH = cross.getHeight()*viewScale*.5;\r
+\r
+ // Render line removal markers\r
+ for (RouteLineHalf lh : lhs) {\r
+// if (lh.getLine().getLength() < DEGENERATED_LINE_LENGTH)\r
+// continue;\r
+// if (!lh.getLine().isTransient())\r
+// continue;\r
+ if (lh.getLine().getTerminal() == null)\r
+ continue;\r
+ double x = lh.getLink().getX();\r
+ double y = lh.getLink().getY();\r
+ if (lh.getLine().isHorizontal()) {\r
+ x = (lh.getLine().getBegin().getX() + lh.getLine().getEnd().getX()) * .5;\r
+ } else {\r
+ y = (lh.getLine().getBegin().getY() + lh.getLine().getEnd().getY()) * .5;\r
+ }\r
+\r
+ boolean hit = pick.matches(Action.REMOVE, lh);\r
+\r
+ if (hit)\r
+ g.setComposite(originalComposite);\r
+ transform.setToTranslation(x-crossW, y-crossH);\r
+ g.transform(transform);\r
+ g.drawImage(cross, transform2, null);\r
+ g.setTransform(preTr);\r
+ if (hit)\r
+ g.setComposite(COMPOSITE);\r
+ }\r
+ }\r
+\r
+ // Render reconnection markers if the connection is branched.\r
+ if (branchedConnection) {\r
+ double cutW = cut.getWidth()*viewScale*.5;\r
+ double cutH = cut.getHeight()*viewScale*.5;\r
+\r
+ final double dist = CUT_DIST_FROM_END;\r
+ for (RouteLineHalf lh : lhs) {\r
+ if (lh.getLine().getLength() < DEGENERATED_LINE_LENGTH*3)\r
+ continue;\r
+ double x = lh.getLink().getX();\r
+ double y = lh.getLink().getY();\r
+ if (lh.getLine().isHorizontal()) {\r
+ if (lh.getLink() == lh.getLine().getBegin())\r
+ x += dist*2;\r
+ else\r
+ x -= dist*2;\r
+ } else {\r
+ if (lh.getLink() == lh.getLine().getBegin())\r
+ y += dist*2;\r
+ else\r
+ y -= dist*2;\r
+ }\r
+\r
+ boolean hit = pick.matches(Action.RECONNECT, lh);\r
+\r
+ if (hit)\r
+ g.setComposite(originalComposite);\r
+ transform.setToTranslation(x-cutW, y-cutH);\r
+ if (!lh.getLine().isHorizontal()) {\r
+ transform.rotate(Math.PI/2, cutW, cutH);\r
+ }\r
+ g.transform(transform);\r
+ g.drawImage(cut, transform2, null);\r
+ g.setTransform(preTr);\r
+ if (hit)\r
+ g.setComposite(COMPOSITE);\r
+ }\r
+ }\r
+\r
+ g.setComposite(originalComposite);\r
+ }\r
+\r
+ public Pick pickAction(RouteGraph rg, AffineTransform viewTr, double mouseX, double mouseY) {\r
+ boolean branchedConnection = rg.getTerminals().size() > 2;\r
+ boolean simpleConnection = (rg.isSimpleConnection() || rg.getTerminals().size() <= 2);\r
+ if (!branchedConnection || simpleConnection)\r
+ return null;\r
+\r
+ lhs.clear();\r
+ return pickAction(rg, rg.getLineHalves(lhs), viewTr, mouseX, mouseY);\r
+ }\r
+\r
+ public Pick pickAction(RouteGraph rg, Collection<RouteLineHalf> lhs, AffineTransform viewTr, double mouseX, double mouseY) {\r
+ boolean branchedConnection = rg.getTerminals().size() > 2;\r
+ boolean simpleConnection = (rg.isSimpleConnection() || rg.getTerminals().size() <= 2);\r
+ if (!branchedConnection || simpleConnection || viewTr == null)\r
+ return Pick.MISS;\r
+\r
+ lhs.clear();\r
+ rg.getLineHalves(lhs);\r
+\r
+ RouteLineHalf selected = null;\r
+ Action selectedAction = null;\r
+ double nearest = Double.MAX_VALUE;\r
+ double viewScale = 1.0 / getScale(viewTr);\r
+\r
+ if (!simpleConnection) {\r
+ double crossW = cross.getWidth()*viewScale*.5;\r
+ double crossH = cross.getHeight()*viewScale*.5;\r
+\r
+ // Render line removal markers\r
+ for (RouteLineHalf lh : lhs) {\r
+// if (lh.getLine().getLength() < DEGENERATED_LINE_LENGTH)\r
+// continue;\r
+// if (!lh.getLine().isTransient())\r
+// continue;\r
+ if (lh.getLine().getTerminal() == null)\r
+ continue;\r
+ double x = lh.getLink().getX();\r
+ double y = lh.getLink().getY();\r
+ if (lh.getLine().isHorizontal()) {\r
+ x = (lh.getLine().getBegin().getX() + lh.getLine().getEnd().getX()) * .5;\r
+ } else {\r
+ y = (lh.getLine().getBegin().getY() + lh.getLine().getEnd().getY()) * .5;\r
+ }\r
+\r
+ rect.setFrameFromCenter(x, y, x-crossW, y-crossH);\r
+ boolean hit = rect.contains(mouseX, mouseY);\r
+ if (hit) {\r
+ double distSq = distSq(x, y, mouseX, mouseY);\r
+ if (distSq < nearest) {\r
+ nearest = distSq;\r
+ selected = lh;\r
+ selectedAction = Action.REMOVE;\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ // Render reconnection markers if the connection is branched.\r
+ if (branchedConnection) {\r
+ double cutW = cut.getWidth()*viewScale*.5;\r
+ double cutH = cut.getHeight()*viewScale*.5;\r
+\r
+ final double dist = CUT_DIST_FROM_END;\r
+ for (RouteLineHalf lh : lhs) {\r
+ if (lh.getLine().getLength() < DEGENERATED_LINE_LENGTH*3)\r
+ continue;\r
+ double x = lh.getLink().getX();\r
+ double y = lh.getLink().getY();\r
+ if (lh.getLine().isHorizontal()) {\r
+ if (lh.getLink() == lh.getLine().getBegin())\r
+ x += dist*2;\r
+ else\r
+ x -= dist*2;\r
+ } else {\r
+ if (lh.getLink() == lh.getLine().getBegin())\r
+ y += dist*2;\r
+ else\r
+ y -= dist*2;\r
+ }\r
+\r
+ rect.setFrameFromCenter(x, y, x-cutW, y-cutH);\r
+ boolean hit = rect.contains(mouseX, mouseY);\r
+ if (hit) {\r
+ double distSq = distSq(x, y, mouseX, mouseY);\r
+ if (distSq < nearest) {\r
+ nearest = dist;\r
+ selected = lh;\r
+ selectedAction = Action.RECONNECT;\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ return selected == null ? Pick.MISS : new Pick(selectedAction, selected);\r
+ }\r
+\r
+ private static double distSq(double x1, double y1, double x2, double y2) {\r
+ double dx = x2 - x1;\r
+ double dy = y2 - y1;\r
+ return dx * dx + dy * dy;\r
+ }\r
+\r
+ private static double getScale(AffineTransform at)\r
+ {\r
+ double m00 = at.getScaleX();\r
+ double m11 = at.getScaleY();\r
+ double m10 = at.getShearY();\r
+ double m01 = at.getShearX();\r
+\r
+ return Math.sqrt(Math.abs(m00*m11 - m10*m01));\r
+ }\r
+\r
+ private static BufferedImage safeReadImage(String name) {\r
+ try {\r
+ URL url = HighlightActionPointsAction.class.getResource(name);\r
+ return ImageIO.read(url);\r
+ } catch (IOException e) {\r
+ return null;\r
+ }\r
+ }\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff