With scroll bars and zoom

src/album/editor/Editor.java

@@ -20,163 +20,111 @@ import javax.swing.border.*;
 public class Editor
     extends JComponent
 {
+    // Given from input image
     BufferedImage img;
-    double rotation;
+    double imgScale;     // coordinates per bitmap pixel
+    Rectangle imgRec;
+
+    // What we choose
+    double rotation;     // radians
+    Rect roi;            // Measured in coordinates
     double scale;
-    Rectangle region;
+    int side;
-    Dimension displaySize;
-    AffineTransform t;
 
+    // other
+//    AffineTransform t;
     CropFrame mask;
 
-    Rectangle currentRect = null;
-
-    Rectangle rectToDraw = null;
-
-    Rectangle previousRectDrawn = new Rectangle();
-
     public Editor(BufferedImage img) {
         this.img = img;
-
-        rotation = 0; // 135.0;
-        displaySize = new Dimension(480, 300);
         int w = img.getWidth();
         int h = img.getHeight();
+        imgScale = 1d / Math.sqrt(w * w + h * h);
+        imgRec = new Rectangle(0, 0, w, h);
 
-        scale = Math.min(displaySize.width, displaySize.height)
+        resize(imgScale * 680);
-            / Math.sqrt(w * w + h * h);
+/*
+        Dimension size = new Dimension(680, 680);
+        setPreferredSize(size);
+        setMinimumSize(size);
+        setMaximumSize(size);
 
-        t = new AffineTransform();
+        roi = new Rect();
-        t.translate(displaySize.width/2.0, displaySize.height/2.0);
+        roi.top = 0.5;
-        t.scale(scale, scale);
+        roi.bottom = -0.5;
-        t.translate(-w/2.0, -h/2.0);
+        roi.left = -0.5;
-        Point topLeft = new Point(0, 0);
+        roi.right = 0.5;
-        Point topLeft1 = new Point();
-        Point bottomRight = new Point(w, h);
-        Point bottomRight2 = new Point();
-        t.transform(topLeft, topLeft1);
-        t.transform(bottomRight, bottomRight2);
-        Dimension d = new Dimension((int)Math.round(bottomRight2.getX() - topLeft1.getX() + 1),
-                                    (int)Math.round(bottomRight2.getY() - topLeft1.getY() + 1));
-        Rectangle imgRec = new Rectangle(topLeft1, d);
 
-        log("rect: " + imgRec);
 
+        rotation = 0.0;
+
+        Rectangle initialMask = new Rectangle(100, 100, 200, 200);
         mask = new CropFrame();
-        add(mask);
+        mask.setBounds(initialMask);
-        mask.setBounds(imgRec);
         mask.setVisible(true);
-
-        setPreferredSize(displaySize);
-        MyListener ml = new MyListener();
-        addMouseListener(ml);
-        addMouseMotionListener(ml);
-
-
         mask.addMouseListener(mask);
         mask.addMouseMotionListener(mask);
+        add(mask);
 
+        SelectionEditor ml = new SelectionEditor();
+        addMouseListener(ml);
+        addMouseMotionListener(ml);
+*/
     }
 
 
 
-    AffineTransform render() {
+    void resize(double newScale) {
-        int w = img.getWidth();
-        int h = img.getHeight();
 
-        scale = Math.min(displaySize.width, displaySize.height)
+        scale = newScale;
-            / Math.sqrt(w * w + h * h);
+        side = (int)Math.round(scale / imgScale);
-
+        Dimension size = new Dimension(side, side);
-        t = new AffineTransform();
+        setSize(size);
-
+        setPreferredSize(size);
-        t.translate(displaySize.width/2.0, displaySize.height/2.0);
+        setMinimumSize(size);
-        t.scale(scale, scale);
+        setMaximumSize(size);
-        t.rotate(rotation * Math.PI / 180);
+        revalidate();
-        t.translate(-w/2.0, -h/2.0);
+        repaint();
-
-        return t;
     }
 
 
-    VolatileImage dst;
-
     protected void paintComponent(Graphics g1) {
         super.paintComponent(g1);
 
-        if (getWidth() != displaySize.width
+        Graphics2D g = (Graphics2D)g1;
-            || getHeight() != displaySize.height
+        AffineTransform orig = g.getTransform();
-            || t == null || dst == null)
-        {
-            displaySize.width = getWidth();
-            displaySize.height = getHeight();
-            AffineTransform dxf = render();
 
+        AffineTransform screenToCoord = new AffineTransform();
+        screenToCoord.translate(side/2d, side/2d);
+        screenToCoord.scale(side, side); 
+
+        g.transform(screenToCoord);
+        
+        AffineTransform imageToCoord = new AffineTransform();
+        imageToCoord.rotate(rotation * Math.PI / 180d);
+        imageToCoord.scale(imgScale * scale, imgScale *  scale);
+        imageToCoord.translate(-img.getWidth()/2d, -img.getHeight()/2d);
+
+        g.drawImage(img, imageToCoord, this);
+
+        // Crosshair
+        g.setStroke(new BasicStroke(0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 1f, new float[] { 0.005f, 0.005f }, 0));
+        g.draw(new Line2D.Double(-0.5, 0, 0.5, 0));
+        g.draw(new Line2D.Double(0, -0.5, 0, 0.5));
+
+        g.setTransform(orig);
+
+        g.setXORMode(Color.white); //Color of line varies
+        g.setStroke(new BasicStroke(0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 1f, new float[] { 5f, 5f }, 0));
+        g.draw(new Rectangle2D.Double(100, 100, 200, 200));
+        
         
-            dst = createVolatileImage(getWidth(), getHeight());
-            Graphics2D g = dst.createGraphics();
-            g.drawRenderedImage(img, dxf);
-        }
-        g1.drawImage(dst, 0, 0, dst.getWidth(), dst.getHeight(), this);
     }
 
 
 
-    void drawWireframe(Graphics2D g, int w, int h) {
-        double delta = Math.round(Math.sqrt(w * w + h * h) / 20);
-        //
-        //  0------------4------------1
-        //  |           /|\           |
-        //  |          6 | 7          |
-        //  |            |            |
-        //  |            5            |
-        //  |            8            |
-        //  |            |            |
-        //  |         10-+-11         |
-        //  |            |            |
-        //  |            9            |
-        //  |                         |
-        //  |                         |
-        //  |                         |
-        //  |                         |
-        //  3-------------------------2
-        double[] wireFramePoints = new double[] {
-            0, 0,
-            w, 0,
-            w, h,
-            0, h,
-            w/2, 0,
-            w/2, 3 * delta,
-            w/2 - delta, delta,
-            w/2 + delta, delta,
-            w/2, h/2 - delta,
-            w/2, h/2 + delta,
-            w/2 - delta, h/2,
-            w/2 + delta, h/2
-        };
 
-        float[] screen = new float[wireFramePoints.length];
+    private class SelectionEditor extends MouseInputAdapter {
-        int[] x = new int[wireFramePoints.length / 2];
-        int[] y = new int[wireFramePoints.length / 2];
-
-        t.transform(wireFramePoints, 0, screen, 0, x.length);
-
-        for (int i = 0; i < x.length; ++i) {
-            x[i] = Math.round(screen[2*i]);
-            y[i] = Math.round(screen[2*i + 1]);
-        }
-        g.setColor(Color.BLUE);
-
-        g.drawPolygon(x, y, 4);
-        g.drawLine(x[4], y[4], x[5], y[5]);
-        g.drawLine(x[4], y[4], x[6], y[6]);
-        g.drawLine(x[4], y[4], x[7], y[7]);
-        g.drawLine(x[8], y[8], x[9], y[9]);
-        g.drawLine(x[10], y[10], x[11], y[11]);
-    }
-
-
-
-    private class MyListener extends MouseInputAdapter {
 
         public void mousePressed(MouseEvent e) {
             int x = e.getX();
@@ -224,8 +172,6 @@ public class Editor
                 if (value != previousValue) {
                     previousValue = value;
                     rotation = value;
-                    t = null;
-//                    render();
                     repaint();
                 }
             }
@@ -240,7 +186,6 @@ public class Editor
                    boolean value = renderQualityControl.isSelected();
                     if (value != previousValue) {
                         previousValue = value;
-                        render();
                         repaint();
                     }
                 }
@@ -248,6 +193,23 @@ public class Editor
         hp.add(renderQualityControl);
 
 
+        hp.add(new JLabel("Zoom"));
+        final JSlider zoomSlider = new JSlider(1, 300, (int) Math.round(scale * 100));
+        zoomSlider.setPaintTicks(true);
+        zoomSlider.setMajorTickSpacing(10); 
+        zoomSlider.addChangeListener(new ChangeListener() {
+            int previousValue = 0;
+            public void stateChanged(ChangeEvent e) {
+                int value = zoomSlider.getValue();
+                if (value != previousValue) {
+                    previousValue = value;
+                    resize(value * 0.01);
+                }
+            }
+        });
+        hp.add(zoomSlider);
+
+
         hp.add(new JPanel());
 
         return hp;
@@ -276,7 +238,7 @@ public class Editor
         Container c = frame.getContentPane();
         c.setLayout(new BorderLayout());
         c.add(x.createControlPanel(), BorderLayout.EAST);
-        c.add(x, BorderLayout.CENTER);
+        c.add(new JScrollPane(x), BorderLayout.CENTER);
 
         frame.pack();
         frame.setVisible(true);
@@ -468,6 +430,12 @@ public class Editor
     }
 
 
+    static class Rect {
+        double top;
+        double left;
+        double bottom;
+        double right;
+    }
 }
 
 // eof