splinecontrolpanel.java

JAVA图形特效,详细介绍SWING等的效果开发

        
        panel.add(display, BorderLayout.NORTH);
        
        JPanel wrapper = new JPanel(new GridBagLayout());
        wrapper.add(new JSeparator(),
                new GridBagConstraints(0, 0,
                2, 1,
                1.0, 0.0,
                GridBagConstraints.LINE_START,
                GridBagConstraints.HORIZONTAL,
                new Insets(0, 0, 0, 0),
                0, 0));
        wrapper.add(bounceSimulator,
                new GridBagConstraints(0, 1,
                1, 1,
                1.0, 1.0,
                GridBagConstraints.CENTER,
                GridBagConstraints.BOTH,
                new Insets(0, 0, 0, 0),
                0, 0));
        wrapper.add(dropSimulator,
                new GridBagConstraints(1, 1,
                1, 1,
                1.0, 1.0,
                GridBagConstraints.CENTER,
                GridBagConstraints.BOTH,
                new Insets(0, 0, 0, 0),
                0, 0));
        panel.add(wrapper, BorderLayout.CENTER);
        
        return panel;
    }
    
    private JLabel addDebugLabel(JPanel panel, String label, String value) {
        JLabel labelComponent = new JLabel(label);
        panel.add(labelComponent,
                new GridBagConstraints(0, linesCount,
                1, 1,
                0.5, 0.0,
                GridBagConstraints.LINE_END,
                GridBagConstraints.NONE,
                new Insets(0, 6, 0, 0),
                0, 0));
        labelComponent = new JLabel(value);
        panel.add(labelComponent,
                new GridBagConstraints(1, linesCount++,
                1, 1,
                0.5, 0.0,
                GridBagConstraints.LINE_START,
                GridBagConstraints.NONE,
                new Insets(0, 6, 0, 0),
                0, 0));
        return labelComponent;
    }
    
    private void addEmptySpace(JPanel panel, int size) {
        panel.add(Box.createVerticalStrut(size),
                new GridBagConstraints(0, linesCount++,
                2, 1,
                1.0, 0.0,
                GridBagConstraints.CENTER,
                GridBagConstraints.VERTICAL,
                new Insets(6, 0, 0, 0),
                0, 0));
    }
    
    private void addSeparator(JPanel panel, String label) {
        JPanel innerPanel = new JPanel(new GridBagLayout());
        innerPanel.add(new JLabel(label),
                new GridBagConstraints(0, 0,
                1, 1,
                0.0, 0.0,
                GridBagConstraints.LINE_START,
                GridBagConstraints.NONE,
                new Insets(0, 0, 0, 0),
                0, 0));
        innerPanel.add(new JSeparator(),
                new GridBagConstraints(1, 0,
                1, 1,
                0.9, 0.0,
                GridBagConstraints.LINE_START,
                GridBagConstraints.HORIZONTAL,
                new Insets(0, 6, 0, 6),
                0, 0));
        panel.add(innerPanel,
                new GridBagConstraints(0, linesCount++,
                2, 1,
                1.0, 0.0,
                GridBagConstraints.LINE_START,
                GridBagConstraints.HORIZONTAL,
                new Insets(6, 6, 6, 0),
                0, 0));
    }
    
    private void startSampleAnimation() {
        if (controller != null && controller.isRunning()) {
            controller.stop();
        }
        
        Point2D control1 = display.getControl1();
        Point2D control2 = display.getControl2();
        Interpolator splines = new SplineInterpolator((float) control1.getX(), 
                (float) control1.getY(),
                (float) control2.getX(), (float) control2.getY());
        KeyTimes times = new KeyTimes(0.0f, 1.0f);
        KeyValues values = KeyValues.create(0.0, 1.0);
        KeyFrames frames = new KeyFrames(values,times, splines);
        
        PropertySetter dropModifier = new PropertySetter(dropSimulator,
                "time", frames);
        PropertySetter bounceModifier = new PropertySetter(bounceSimulator,
                "time", frames);
        
        controller = new Animator(1000, 4, RepeatBehavior.REVERSE, dropModifier);
        controller.setResolution(10);
        controller.addTarget(bounceModifier);
        
        controller.start();
    }
    
    private Evaluator point2dInterpolator = new Point2DNonLinearInterpolator();
    
    private class Point2DNonLinearInterpolator extends Evaluator<Point2D> {
        private Point2D value;
        public Point2D evaluate(Point2D v0, Point2D v1,
                float fraction) {
            Point2D value = (Point2D)v0.clone();
            if (v0 != v1) {
                double x = value.getX();
                x += (v1.getX() - v0.getX()) * fraction;
                double y = value.getY();
                y += (v1.getY() - v0.getY()) * fraction;
                value.setLocation(x, y);
            } else {
                value.setLocation(v0.getX(), v0.getY());
            }
            return value;
        }
    }
    
    private class TemplateSelectionHandler implements ListSelectionListener {
        public void valueChanged(ListSelectionEvent e) {
            if (e.getValueIsAdjusting()) {
                return;
            }
            
            JList list = (JList) e.getSource();
            Template template = (Template) list.getSelectedValue();
            if (template != null) {
                if (controller != null && controller.isRunning()) {
                    controller.stop();
                }
                
                controller = new Animator(300,
                        new PropertySetter(display, "control1",
                        point2dInterpolator, display.getControl1(),
                        template.getControl1()));
                controller.setResolution(10);
                controller.addTarget(new PropertySetter(display, "control2",
                        point2dInterpolator, display.getControl2(),
                        template.getControl2()));
                
                controller.start();
            }
        }
    }
    
    private static NumberFormat getNumberFormatter() {
        NumberFormat formatter = NumberFormat.getInstance(Locale.ENGLISH);
        formatter.setMinimumFractionDigits(2);
        formatter.setMaximumFractionDigits(2);
        return formatter;
    }
    
    private static Template createTemplate(double x1, double y1, double x2, double y2) {
        return new Template(new Point2D.Double(x1, y1),
                new Point2D.Double(x2, y2));
    }
    
    private static class TemplateCellRenderer extends DefaultListCellRenderer {
        private boolean isSelected;
        
        @Override
        public Component getListCellRendererComponent(JList list, Object value, int index,
                boolean isSelected, boolean cellHasFocus) {
            Template template = (Template) value;
            this.setBackground(Color.WHITE);
            this.setIcon(new ImageIcon(template.getImage()));
            this.isSelected = isSelected;
            return this;
        }
        
        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g);
            
            if (isSelected) {
                g.setColor(new Color(0.0f, 0.0f, 0.7f, 0.1f));
                g.fillRect(0, 0, getWidth(), getHeight());
            }
        }
    }
    
    private static class Template {
        private Point2D control1;
        private Point2D control2;
        private Image image;
        
        public Template(Point2D control1, Point2D control2) {
            this.control1 = control1;
            this.control2 = control2;
        }
        
        public Point2D getControl1() {
            return control1;
        }
        
        public Point2D getControl2() {
            return control2;
        }
        
        public Image getImage() {
            if (image == null) {
                NumberFormat formatter = getNumberFormatter();
                
                String name = "";
                name += formatter.format(control1.getX()) + '-' + formatter.format(control1.getY());
                name += '-';
                name += formatter.format(control2.getX()) + '-' + formatter.format(control2.getY());
                
                try {
                    image = ImageIO.read(getClass().getResourceAsStream("images/templates/" + name + ".png"));
                } catch (IOException e) {
                }
            }
            
            return image;
        }
    }
}