import java.awt.*;
import javax.swing.*;
import no.geosoft.cc.geometry.Geometry;
import no.geosoft.cc.graphics.*;
/**
* G demo program. Demonstrates:
*
* <ul>
* <li>Nested GObject hierarchy
* <li>Style inheritance
* <li>Simple selection interaction
* </ul>
*
* @author <a href="mailto:[email protected]">Jacob Dreyer</a>
*/
public class Demo8 extends JFrame
implements GInteraction
{
private GScene scene_;
public Demo8()
{
super ("G Graphics Library - Demo 8");
setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
// Create the GUI
JPanel topLevel = new JPanel();
topLevel.setLayout (new BorderLayout());
getContentPane().add (topLevel);
JPanel buttonPanel = new JPanel();
buttonPanel.add (new JLabel ("Button 1 to select color, button 2 to unselect"));
JPanel graphicsPanel = new JPanel();
topLevel.add (buttonPanel, BorderLayout.NORTH);
// Create the graphic canvas
GWindow window = new GWindow();
topLevel.add (window.getCanvas(), BorderLayout.CENTER);
// Create scene with default viewport and world extent settings
scene_ = new GScene (window, "Scene");
double w0[] = {0.0, 1200.0, 0.0};
double w1[] = {1200.0, 1200.0, 0.0};
double w2[] = {0.0, 0.0, 0.0};
scene_.setWorldExtent (w0, w1, w2);
GStyle style = new GStyle();
style.setForegroundColor (new Color (0, 0, 0));
style.setBackgroundColor (new Color (255, 255, 255));
style.setFont (new Font ("Dialog", Font.BOLD, 14));
scene_.setStyle (style);
// Create som graphic objects
GObject object1 = new TestObject ("1", scene_, 500.0, 100.0);
GObject object2 = new TestObject ("2", object1, 250.0, 250.0);
GObject object3 = new TestObject ("3", object1, 500.0, 250.0);
GObject object4 = new TestObject ("4", object1, 625.0, 250.0);
GObject object5 = new TestObject ("5", object2, 150.0, 400.0);
GObject object6 = new TestObject ("6", object2, 250.0, 400.0);
GObject object7 = new TestObject ("7", object2, 350.0, 400.0);
GObject object8 = new TestObject ("8", object4, 625.0, 400.0);
GObject object9 = new TestObject ("9", object7, 250.0, 550.0);
GObject object10 = new TestObject ("10", object7, 350.0, 550.0);
GObject object11 = new TestObject ("11", object8, 475.0, 550.0);
GObject object12 = new TestObject ("12", object8, 600.0, 550.0);
GObject object13 = new TestObject ("13", object8, 725.0, 550.0);
GObject object14 = new TestObject ("14", object8, 850.0, 550.0);
GObject object15 = new TestObject ("15", object9, 150.0, 700.0);
GObject object16 = new TestObject ("16", object9, 250.0, 700.0);
GObject object17 = new TestObject ("17", object9, 350.0, 700.0);
GObject object18 = new TestObject ("18", object13, 725.0, 700.0);
GObject object19 = new TestObject ("19", object17, 350.0, 850.0);
GObject object20 = new TestObject ("20", object19, 250.0, 1000.0);
GObject object21 = new TestObject ("21", object19, 350.0, 1000.0);
GObject object22 = new TestObject ("22", object19, 450.0, 1000.0);
pack();
setSize (new Dimension (500, 500));
setVisible (true);
window.startInteraction (this);
}
public void event (GScene scene, int event, int x, int y)
{
if (event == GWindow.BUTTON1_UP ||
event == GWindow.BUTTON2_UP) {
boolean isSelected = event == GWindow.BUTTON1_UP;
GSegment selectedSegment = scene_.findSegment (x, y);
if (selectedSegment == null) return;
GStyle style = selectedSegment.getOwner().getStyle();
if (style == null) return;
if (isSelected)
style.setBackgroundColor (new Color ((float) Math.random(),
(float) Math.random(),
(float) Math.random()));
else
style.unsetBackgroundColor();
scene_.refresh();
}
}
private class TestObject extends GObject
{
private TestObject parent_;
private double x_, y_;
private GSegment circle_;
private GSegment line_;
TestObject (String name, GObject parent, double x, double y)
{
parent_ = parent instanceof TestObject ? (TestObject) parent : null;
x_ = x;
y_ = y;
line_ = new GSegment();
addSegment (line_);
circle_ = new GSegment();
addSegment (circle_);
circle_.setText (new GText (name, GPosition.MIDDLE));
setStyle (new GStyle());
parent.add (this);
}
double getX()
{
return x_;
}
double getY()
{
return y_;
}
public void draw()
{
if (parent_ != null)
line_.setGeometry (parent_.getX(), parent_.getY(), x_, y_);
circle_.setGeometryXy (Geometry.createCircle (x_, y_, 40.0));
}
}
public static void main (String[] args)
{
new Demo8();
}
}
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G-StyleInheritance.zip( 218 k)
