Source Code Cross Referenced for MarqueeHandler.java in  » UML » MetaBoss » com » metaboss » applications » designstudio » components » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » UML » MetaBoss » com.metaboss.applications.designstudio.components 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // THIS SOFTWARE IS PROVIDED BY SOFTARIS PTY.LTD. AND OTHER METABOSS
002:        // CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
003:        // BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
004:        // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SOFTARIS PTY.LTD.
005:        // OR OTHER METABOSS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
006:        // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
007:        // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
008:        // OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
009:        // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
010:        // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
011:        // EVEN IF SOFTARIS PTY.LTD. OR OTHER METABOSS CONTRIBUTORS ARE ADVISED OF THE
012:        // POSSIBILITY OF SUCH DAMAGE.
013:        //
014:        // Copyright 2000-2005 © Softaris Pty.Ltd. All Rights Reserved.
015:        package com.metaboss.applications.designstudio.components;
016:
017:        import java.awt.Color;
018:        import java.awt.Cursor;
019:        import java.awt.Graphics;
020:        import java.awt.Point;
021:        import java.awt.event.MouseEvent;
022:        import java.awt.geom.Point2D;
023:        import java.awt.geom.Rectangle2D;
024:
025:        import javax.swing.SwingUtilities;
026:
027:        import org.jgraph.graph.BasicMarqueeHandler;
028:        import org.jgraph.graph.DefaultGraphCell;
029:        import org.jgraph.graph.GraphConstants;
030:        import org.jgraph.graph.Port;
031:        import org.jgraph.graph.PortView;
032:
033:        import com.metaboss.applications.designstudio.BaseGraphModel;
034:        import com.metaboss.applications.designstudio.BaseGraphPanel;
035:
036:        /*		Graph Marquee Handler Class 	*/
037:
038:        public class MarqueeHandler extends BasicMarqueeHandler {
039:            protected BaseGraphPanel mGraphPanel = null;
040:            protected Point2D start, current; // Holds the Start and the Current Point
041:            protected PortView port, firstPort; // Holds the First and the Current Port
042:            protected MouseEvent mOldEvent = null;
043:
044:            public MarqueeHandler(BaseGraphPanel pGraphPanel) {
045:                super ();
046:                mGraphPanel = pGraphPanel;
047:            }
048:
049:            // Override to Gain Control (for PopupMenu and ConnectMode)
050:            public boolean isForceMarqueeEvent(MouseEvent e) {
051:                if (SwingUtilities.isRightMouseButton(e)) {
052:                    Point2D lPoint = mGraphPanel.getGraph().fromScreen(
053:                            e.getPoint());
054:                    DefaultGraphCell lCell = (DefaultGraphCell) mGraphPanel
055:                            .getGraph().getFirstCellForLocation(lPoint.getX(),
056:                                    lPoint.getY());
057:                    if (lCell != null /*&& !(lCell instanceof DefaultEdge)*/) {
058:                        mOldEvent = e;
059:                        return true;
060:                    }
061:                }
062:                port = getSourcePortAt(e.getPoint());
063:                if (port != null && mGraphPanel.edgePending())
064:                    return true;
065:                return super .isForceMarqueeEvent(e);
066:            }
067:
068:            // Display PopupMenu or Remember Start Location and First Port
069:            public void mousePressed(final MouseEvent e) {
070:                if (SwingUtilities.isRightMouseButton(e)) {
071:                    Point2D loc = mGraphPanel.getGraph().fromScreen(
072:                            e.getPoint());
073:                    Object cell = mGraphPanel.getGraph()
074:                            .getFirstCellForLocation(loc.getX(), loc.getY());
075:                    //mGraphPanel.showPopUpMenuForCell((DefaultGraphCell)cell, loc.x, loc.y);
076:                    mGraphPanel.showPopUpMenuForCell((DefaultGraphCell) cell, e
077:                            .getPoint().x, e.getPoint().y);
078:                } else if (port != null && !e.isConsumed()
079:                        && mGraphPanel.edgePending()) {
080:                    start = mGraphPanel.getGraph().toScreen(
081:                            port.getLocation(null));
082:                    firstPort = port;
083:                    e.consume();
084:                } else
085:                    super .mousePressed(e);
086:            }
087:
088:            // Find Port under Mouse and Repaint Connector
089:            public void mouseDragged(MouseEvent e) {
090:                // If remembered Start Point is Valid
091:                if (start != null && !e.isConsumed()) {
092:                    // Fetch Graphics from Graph
093:                    Graphics g = mGraphPanel.getGraph().getGraphics();
094:                    // Xor-Paint the old Connector (Hide old Connector)
095:                    paintConnector(Color.black, mGraphPanel.getGraph()
096:                            .getBackground(), g);
097:                    // Reset Remembered Port
098:                    port = getTargetPortAt(e.getPoint());
099:                    // If Port was found then Point to Port Location
100:                    if (port != null)
101:                        current = mGraphPanel.getGraph().toScreen(
102:                                port.getLocation(null));
103:                    // Else If no Port was found then Point to Mouse Location
104:                    else
105:                        current = mGraphPanel.getGraph().snap(e.getPoint());
106:                    // Xor-Paint the new Connector
107:                    paintConnector(mGraphPanel.getGraph().getBackground(),
108:                            Color.black, g);
109:                    // Consume Event
110:                    e.consume();
111:                }
112:                super .mouseDragged(e);
113:            }
114:
115:            public PortView getSourcePortAt(Point point) {
116:                // Scale from Screen to Model
117:                Point2D tmp = mGraphPanel.getGraph().fromScreen(
118:                        GraphConstants.createPoint(point));
119:                // Find a Port View in Model Coordinates and Remember
120:                return mGraphPanel.getGraph().getPortViewAt(tmp.getX(),
121:                        tmp.getY());
122:            }
123:
124:            // Find a Cell at point and Return its first Port as a PortView
125:            protected PortView getTargetPortAt(Point point) {
126:                // Find Cell at point (No scaling needed here)
127:                Object cell = mGraphPanel.getGraph().getFirstCellForLocation(
128:                        point.x, point.y);
129:                // Loop Children to find PortView
130:                for (int i = 0; i < mGraphPanel.getGraph().getModel()
131:                        .getChildCount(cell); i++) {
132:                    // Get Child from Model
133:                    Object tmp = mGraphPanel.getGraph().getModel().getChild(
134:                            cell, i);
135:                    // Get View for Child using the Graph's View as a Cell Mapper
136:                    //???tmp = graph.getView().getMapping(tmp, false);
137:                    // If Child View is a Port View and not equal to First Port
138:                    if (tmp instanceof  PortView && tmp != firstPort)
139:                        return (PortView) tmp;
140:                }
141:                return getSourcePortAt(point);
142:            }
143:
144:            // Connect the First Port and the Current Port in the Graph or Repaint
145:            public void mouseReleased(MouseEvent e) {
146:                /*if (e!=null && !e.isConsumed() && 
147:                	port!=null && firstPort != null && firstPort != port) 
148:                {
149:                	mGraphPanel.connectEdges((Port) firstPort.getCell(), (Port) port.getCell());
150:                	e.consume();
151:                }*/
152:                ((BaseGraphModel) mGraphPanel.getGraph().getModel()).mOldEdgePoint = null;
153:                if (e != null && !e.isConsumed() && firstPort != null
154:                        && firstPort != port) {
155:                    Port lPort = (port != null) ? (Port) port.getCell() : null;
156:                    if (lPort == null)
157:                        ((BaseGraphModel) mGraphPanel.getGraph().getModel()).mOldEdgePoint = GraphConstants
158:                                .createPoint(e.getX(), e.getY());
159:                    mGraphPanel.connectEdges((Port) firstPort.getCell(), lPort);
160:                    e.consume();
161:                } else
162:                    mGraphPanel.getGraph().repaint();
163:
164:                firstPort = port = null;
165:                start = current = null;
166:                super .mouseReleased(e);
167:            }
168:
169:            // Show Special Cursor if Over Port
170:            public void mouseMoved(MouseEvent e) {
171:                // Check Mode and Find Port
172:                if (e != null && getSourcePortAt(e.getPoint()) != null
173:                        && !e.isConsumed() && mGraphPanel.edgePending()) {
174:                    // Set Cusor on Graph (Automatically Reset)
175:                    mGraphPanel.getGraph().setCursor(
176:                            new Cursor(Cursor.HAND_CURSOR));
177:                    // Consume Event
178:                    e.consume();
179:                }
180:                // Call Superclass
181:                super .mouseReleased(e);
182:            }
183:
184:            public MouseEvent getOldMouseEvent() {
185:                return mOldEvent;
186:            }
187:
188:            // Use Xor-Mode on Graphics to Paint Connector
189:            protected void paintConnector(Color fg, Color bg, Graphics g) {
190:                g.setColor(fg);
191:                g.setXORMode(bg);
192:                paintPort(mGraphPanel.getGraph().getGraphics());
193:                if (firstPort != null && start != null && current != null)
194:                    g.drawLine((int) start.getX(), (int) start.getY(),
195:                            (int) current.getX(), (int) current.getY());
196:            }
197:
198:            // Use the Preview Flag to Draw a Highlighted Port
199:            protected void paintPort(Graphics g) {
200:                // If Current Port is Valid
201:                if (port != null) {
202:                    // If Not Floating Port...
203:                    boolean o = (GraphConstants.getOffset(port.getAttributes()) != null);
204:                    // ...Then use Parent's Bounds
205:                    Rectangle2D r = (o) ? port.getBounds() : port
206:                            .getParentView().getBounds();
207:                    // Scale from Model to Screen
208:                    r = mGraphPanel.getGraph().toScreen(
209:                            GraphConstants.createRect(r));
210:                    // Add Space For the Highlight Border
211:                    r.setFrame(r.getX() - 3, r.getY() - 3, r.getWidth() + 6, r
212:                            .getHeight() + 6);
213:                    // Paint Port in Preview (=Highlight) Mode
214:                    mGraphPanel.getGraph().getUI().paintCell(g, port, r, true);
215:                }
216:            }
217:        }
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