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Reading pixel color on SWT canvas at mouse pointer [message #1043770]

Thu, 18 April 2013 01:28

Eclipse User

I wrote a small program to read the colour of a pixel at the mouse pointer location. But I am not getting the colour at mouse pointer, always RGB {0, 0, 0} is printing on console. Please fix/correct the program below so that it prints the colour of a pixel at mouse pointer.

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class PixelColorPick {
    private static final int RECT_HEIGHT = 20;
    private static final int RECT_WIDTH = 20;
    private static final int CYCLE_OFFSET = 0;
    protected static final int Y_STEP = 20;
    static int shellStyle = SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.CLOSE | SWT.RESIZE;
    static int canvasStyle = SWT.NO_REDRAW_RESIZE | SWT.H_SCROLL | SWT.V_SCROLL;

    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display, shellStyle);
        shell.setLayout(new FillLayout());
        shell.setBackground(display.getSystemColor((SWT.COLOR_CYAN)));
        shell.setText("Canvas Test");
        shell.setSize(400, 300);

        Composite composite = new Composite(shell, SWT.NONE);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        composite.setLayout(new GridLayout(1, false));

        final Canvas canvas = new Canvas(composite, canvasStyle);
        canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
        canvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        final Point cycleOrigin = new Point(CYCLE_OFFSET, 0);

        // Create a paint handler for the canvas
        canvas.addPaintListener(new PaintListener() {
            @Override
            public void paintControl(PaintEvent e) {

                for (int i = 0; i < 100; i++) {                    
                    for (int j = 0; j < 100; j++) {                     
                        Color oldBgColor = e.gc.getBackground();
                        Color oldFgColor = e.gc.getForeground();
                        if(j%2 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_RED));                            
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else if(j%3 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_GREEN));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        }
                    }
                }
            }

        });
        canvas.addMouseMoveListener(new MouseMoveListener() {

            @Override
            public void mouseMove(MouseEvent e) {
                Image image = new Image(e.display, 20, 20);
                GC gc = new GC(image);
                gc.copyArea(image, e.x, e.y);
                ImageData imageData = image.getImageData();                
                int pixelValue = imageData.getPixel(0, 0);
                PaletteData palette = imageData.palette;
                RGB rgb = palette.getRGB(pixelValue);
                System.out.println(rgb);

            }
        });
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();

    }
}

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055015 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class PixelColorPick {
    private static final int RECT_HEIGHT = 20;
    private static final int RECT_WIDTH = 20;
    private static final int CYCLE_OFFSET = 0;
    protected static final int Y_STEP = 20;
    static int shellStyle = SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.CLOSE | SWT.RESIZE;
    static int canvasStyle = SWT.NO_REDRAW_RESIZE | SWT.H_SCROLL | SWT.V_SCROLL;

    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display, shellStyle);
        shell.setLayout(new FillLayout());
        shell.setBackground(display.getSystemColor((SWT.COLOR_CYAN)));
        shell.setText("Canvas Test");
        shell.setSize(400, 300);

        Composite composite = new Composite(shell, SWT.NONE);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        composite.setLayout(new GridLayout(1, false));

        final Canvas canvas = new Canvas(composite, canvasStyle);
        canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
        canvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        final Point cycleOrigin = new Point(CYCLE_OFFSET, 20);

        // Create a paint handler for the canvas
        canvas.addPaintListener(new PaintListener() {
            @Override
            public void paintControl(PaintEvent e) {

                for (int i = 0; i < 100; i++) {                    
                    for (int j = 0; j < 100; j++) {                     
                        Color oldBgColor = e.gc.getBackground();
                        Color oldFgColor = e.gc.getForeground();
                        if(j%2 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_RED));                            
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else if(j%3 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_GREEN));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        }
                    }
                }
            }

        });
        canvas.addMouseMoveListener(new MouseMoveListener() {

            @Override
            public void mouseMove(MouseEvent e) {
                Image image = new Image(e.display, 20, 20);
                GC gc = new GC(canvas);
                gc.copyArea(image, e.x, e.y);
                ImageData imageData = image.getImageData();                
                int pixelValue = imageData.getPixel(0, 0);
                PaletteData palette = imageData.palette;
                RGB rgb = palette.getRGB(pixelValue);
                System.out.println(rgb);
                gc.drawImage(image, 0, 0);
                image.dispose();
                gc.dispose();
            }
        });
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();

    }
}

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055034 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class PixelColorPick {
    private static final int RECT_HEIGHT = 20;
    private static final int RECT_WIDTH = 20;
    private static final int CYCLE_OFFSET = 0;
    protected static final int Y_STEP = 20;
    static int shellStyle = SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.CLOSE | SWT.RESIZE;
    static int canvasStyle = SWT.NO_REDRAW_RESIZE | SWT.H_SCROLL | SWT.V_SCROLL;

    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display, shellStyle);
        shell.setLayout(new FillLayout());
        shell.setBackground(display.getSystemColor((SWT.COLOR_CYAN)));
        shell.setText("Canvas Test");
        shell.setSize(400, 300);

        Composite composite = new Composite(shell, SWT.NONE);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        composite.setLayout(new GridLayout(1, false));

        final Canvas canvas = new Canvas(composite, canvasStyle);
        canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
        canvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        final Point cycleOrigin = new Point(CYCLE_OFFSET, 20);

        // Create a paint handler for the canvas
        canvas.addPaintListener(new PaintListener() {
            @Override
            public void paintControl(PaintEvent e) {

                for (int i = 0; i < 100; i++) {                    
                    for (int j = 0; j < 100; j++) {                     
                        Color oldBgColor = e.gc.getBackground();
                        Color oldFgColor = e.gc.getForeground();
                        if(j%2 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_RED));                            
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else if(j%3 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_GREEN));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        }
                    }
                }
            }

        });
        canvas.addMouseMoveListener(new MouseMoveListener() {

            @Override
            public void mouseMove(MouseEvent e) {
                Image image = new Image(e.display, 20, 20);
                GC gc = new GC(canvas);
                gc.copyArea(image, e.x, e.y);
                ImageData imageData = image.getImageData();                
                int pixelValue = imageData.getPixel(0, 0);
                PaletteData palette = imageData.palette;
                RGB rgb = palette.getRGB(pixelValue);
                System.out.println(rgb);
                gc.drawImage(image, 0, 0);
                image.dispose();
                gc.dispose();
            }
        });
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();

    }
}

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055074 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Use the canvas to create the gc and dont forget to dispose the gc and image.

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class PixelColorPick {
    private static final int RECT_HEIGHT = 20;
    private static final int RECT_WIDTH = 20;
    private static final int CYCLE_OFFSET = 0;
    protected static final int Y_STEP = 20;
    static int shellStyle = SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.CLOSE | SWT.RESIZE;
    static int canvasStyle = SWT.NO_REDRAW_RESIZE | SWT.H_SCROLL | SWT.V_SCROLL;

    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display, shellStyle);
        shell.setLayout(new FillLayout());
        shell.setBackground(display.getSystemColor((SWT.COLOR_CYAN)));
        shell.setText("Canvas Test");
        shell.setSize(400, 300);

        Composite composite = new Composite(shell, SWT.NONE);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        composite.setLayout(new GridLayout(1, false));

        final Canvas canvas = new Canvas(composite, canvasStyle);
        canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
        canvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        final Point cycleOrigin = new Point(CYCLE_OFFSET, 20);

        // Create a paint handler for the canvas
        canvas.addPaintListener(new PaintListener() {
            @Override
            public void paintControl(PaintEvent e) {

                for (int i = 0; i < 100; i++) {                    
                    for (int j = 0; j < 100; j++) {                     
                        Color oldBgColor = e.gc.getBackground();
                        Color oldFgColor = e.gc.getForeground();
                        if(j%2 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_RED));                            
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else if(j%3 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_GREEN));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        }
                    }
                }
            }

        });
        canvas.addMouseMoveListener(new MouseMoveListener() {

            @Override
            public void mouseMove(MouseEvent e) {
                Image image = new Image(e.display, 20, 20);
                GC gc = new GC(canvas);
                gc.copyArea(image, e.x, e.y);
                ImageData imageData = image.getImageData();                
                int pixelValue = imageData.getPixel(0, 0);
                PaletteData palette = imageData.palette;
                RGB rgb = palette.getRGB(pixelValue);
                System.out.println(rgb);
                gc.drawImage(image, 0, 0);
                image.dispose();
                gc.dispose();
            }
        });
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();

    }
}

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055075 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class PixelColorPick {
    private static final int RECT_HEIGHT = 20;
    private static final int RECT_WIDTH = 20;
    private static final int CYCLE_OFFSET = 0;
    protected static final int Y_STEP = 20;
    static int shellStyle = SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.CLOSE | SWT.RESIZE;
    static int canvasStyle = SWT.NO_REDRAW_RESIZE | SWT.H_SCROLL | SWT.V_SCROLL;

    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display, shellStyle);
        shell.setLayout(new FillLayout());
        shell.setBackground(display.getSystemColor((SWT.COLOR_CYAN)));
        shell.setText("Canvas Test");
        shell.setSize(400, 300);

        Composite composite = new Composite(shell, SWT.NONE);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        composite.setLayout(new GridLayout(1, false));

        final Canvas canvas = new Canvas(composite, canvasStyle);
        canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
        canvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        final Point cycleOrigin = new Point(CYCLE_OFFSET, 20);

        // Create a paint handler for the canvas
        canvas.addPaintListener(new PaintListener() {
            @Override
            public void paintControl(PaintEvent e) {

                for (int i = 0; i < 100; i++) {                    
                    for (int j = 0; j < 100; j++) {                     
                        Color oldBgColor = e.gc.getBackground();
                        Color oldFgColor = e.gc.getForeground();
                        if(j%2 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_RED));                            
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else if(j%3 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_GREEN));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        }
                    }
                }
            }

        });
        canvas.addMouseMoveListener(new MouseMoveListener() {

            @Override
            public void mouseMove(MouseEvent e) {
                Image image = new Image(e.display, 20, 20);
                GC gc = new GC(canvas);
                gc.copyArea(image, e.x, e.y);
                ImageData imageData = image.getImageData();                
                int pixelValue = imageData.getPixel(0, 0);
                PaletteData palette = imageData.palette;
                RGB rgb = palette.getRGB(pixelValue);
                System.out.println(rgb);
                gc.drawImage(image, 0, 0);
                image.dispose();
                gc.dispose();
            }
        });
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();

    }
}

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055111 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class PixelColorPick {
private static final int RECT_HEIGHT = 20;
private static final int RECT_WIDTH = 20;
private static final int CYCLE_OFFSET = 0;
protected static final int Y_STEP = 20;
static int shellStyle = SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.CLOSE | SWT.RESIZE;
static int canvasStyle = SWT.NO_REDRAW_RESIZE | SWT.H_SCROLL | SWT.V_SCROLL;

public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display, shellStyle);
shell.setLayout(new FillLayout());
shell.setBackground(display.getSystemColor((SWT.COLOR_CYAN)));
shell.setText("Canvas Test");
shell.setSize(400, 300);

Composite composite = new Composite(shell, SWT.NONE);
composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
composite.setLayout(new GridLayout(1, false));

final Canvas canvas = new Canvas(composite, canvasStyle);
canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
canvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
final Point cycleOrigin = new Point(CYCLE_OFFSET, 20);

// Create a paint handler for the canvas
canvas.addPaintListener(new PaintListener() {
@Override
public void paintControl(PaintEvent e) {

for (int i = 0; i < 100; i++) {
for (int j = 0; j < 100; j++) {
Color oldBgColor = e.gc.getBackground();
Color oldFgColor = e.gc.getForeground();
if(j%2 == 0) {
e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_RED));
e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);
e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
e.gc.setBackground(oldBgColor);
e.gc.setForeground(oldFgColor);
} else if(j%3 == 0) {
e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);
e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
e.gc.setBackground(oldBgColor);
e.gc.setForeground(oldFgColor);
} else {
e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_GREEN));
e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);
e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
e.gc.setBackground(oldBgColor);
e.gc.setForeground(oldFgColor);
}
}
}
}

});
canvas.addMouseMoveListener(new MouseMoveListener() {

@Override
public void mouseMove(MouseEvent e) {
Image image = new Image(e.display, 20, 20);
GC gc = new GC(canvas);
gc.copyArea(image, e.x, e.y);
ImageData imageData = image.getImageData();
int pixelValue = imageData.getPixel(0, 0);
PaletteData palette = imageData.palette;
RGB rgb = palette.getRGB(pixelValue);
System.out.println(rgb);
gc.drawImage(image, 0, 0);
image.dispose();
gc.dispose();
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();

}
}
--
---------------------
why, mr. Anderson, why, why do you persist?
Because I Choose To.
Regards,
Vijay

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055112 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055170 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055171 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055172 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Use the canvas to create the gc and dont forget to dispose the gc and image.

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class PixelColorPick {
private static final int RECT_HEIGHT = 20;
private static final int RECT_WIDTH = 20;
private static final int CYCLE_OFFSET = 0;
protected static final int Y_STEP = 20;
static int shellStyle = SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.CLOSE | SWT.RESIZE;
static int canvasStyle = SWT.NO_REDRAW_RESIZE | SWT.H_SCROLL | SWT.V_SCROLL;

public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display, shellStyle);
shell.setLayout(new FillLayout());
shell.setBackground(display.getSystemColor((SWT.COLOR_CYAN)));
shell.setText("Canvas Test");
shell.setSize(400, 300);

Composite composite = new Composite(shell, SWT.NONE);
composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
composite.setLayout(new GridLayout(1, false));

final Canvas canvas = new Canvas(composite, canvasStyle);
canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
canvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
final Point cycleOrigin = new Point(CYCLE_OFFSET, 20);

// Create a paint handler for the canvas
canvas.addPaintListener(new PaintListener() {
@Override
public void paintControl(PaintEvent e) {

for (int i = 0; i < 100; i++) {
for (int j = 0; j < 100; j++) {
Color oldBgColor = e.gc.getBackground();
Color oldFgColor = e.gc.getForeground();
if(j%2 == 0) {
e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_RED));
e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);
e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
e.gc.setBackground(oldBgColor);
e.gc.setForeground(oldFgColor);
} else if(j%3 == 0) {
e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);
e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
e.gc.setBackground(oldBgColor);
e.gc.setForeground(oldFgColor);
} else {
e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_GREEN));
e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);
e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
e.gc.setBackground(oldBgColor);
e.gc.setForeground(oldFgColor);
}
}
}
}

});
canvas.addMouseMoveListener(new MouseMoveListener() {

@Override
public void mouseMove(MouseEvent e) {
Image image = new Image(e.display, 20, 20);
GC gc = new GC(canvas);
gc.copyArea(image, e.x, e.y);
ImageData imageData = image.getImageData();
int pixelValue = imageData.getPixel(0, 0);
PaletteData palette = imageData.palette;
RGB rgb = palette.getRGB(pixelValue);
System.out.println(rgb);
gc.drawImage(image, 0, 0);
image.dispose();
gc.dispose();
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();

}
}
--
---------------------
why, mr. Anderson, why, why do you persist?
Because I Choose To.
Regards,
Vijay

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055173 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055232 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055233 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055234 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055235 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055297 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055298 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055299 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055300 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055363 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055364 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055365 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055366 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055428 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055429 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055430 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055431 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055459 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class PixelColorPick {
    private static final int RECT_HEIGHT = 20;
    private static final int RECT_WIDTH = 20;
    private static final int CYCLE_OFFSET = 0;
    protected static final int Y_STEP = 20;
    static int shellStyle = SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.CLOSE | SWT.RESIZE;
    static int canvasStyle = SWT.NO_REDRAW_RESIZE | SWT.H_SCROLL | SWT.V_SCROLL;

    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display, shellStyle);
        shell.setLayout(new FillLayout());
        shell.setBackground(display.getSystemColor((SWT.COLOR_CYAN)));
        shell.setText("Canvas Test");
        shell.setSize(400, 300);

        Composite composite = new Composite(shell, SWT.NONE);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        composite.setLayout(new GridLayout(1, false));

        final Canvas canvas = new Canvas(composite, canvasStyle);
        canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
        canvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        final Point cycleOrigin = new Point(CYCLE_OFFSET, 20);

        // Create a paint handler for the canvas
        canvas.addPaintListener(new PaintListener() {
            @Override
            public void paintControl(PaintEvent e) {

                for (int i = 0; i < 100; i++) {                    
                    for (int j = 0; j < 100; j++) {                     
                        Color oldBgColor = e.gc.getBackground();
                        Color oldFgColor = e.gc.getForeground();
                        if(j%2 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_RED));                            
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else if(j%3 == 0) {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        } else {
                            e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_GREEN));
                            e.gc.drawRectangle(cycleOrigin.x + j * RECT_WIDTH, cycleOrigin.y + i * Y_STEP, RECT_WIDTH, RECT_HEIGHT);                        
                            e.gc.fillRectangle(cycleOrigin.x + 1 + j * RECT_WIDTH, cycleOrigin.y + 1 + i * Y_STEP, RECT_WIDTH - 1, RECT_HEIGHT -1);
                            e.gc.setBackground(oldBgColor);
                            e.gc.setForeground(oldFgColor);
                        }
                    }
                }
            }

        });
        canvas.addMouseMoveListener(new MouseMoveListener() {

            @Override
            public void mouseMove(MouseEvent e) {
                Image image = new Image(e.display, 20, 20);
                GC gc = new GC(canvas);
                gc.copyArea(image, e.x, e.y);
                ImageData imageData = image.getImageData();                
                int pixelValue = imageData.getPixel(0, 0);
                PaletteData palette = imageData.palette;
                RGB rgb = palette.getRGB(pixelValue);
                System.out.println(rgb);
                gc.drawImage(image, 0, 0);
                image.dispose();
                gc.dispose();
            }
        });
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();

    }
}

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055497 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055498 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055499 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055500 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055567 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055568 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055569 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055570 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055574 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055639 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055640 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055641 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055642 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055646 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055713 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055714 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055715 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055716 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055720 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055786 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055787 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055788 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055789 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055793 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055864 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055865 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055866 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055867 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055871 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055942 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055943 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055944 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055945 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1055949 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056021 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056022 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056023 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056024 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056028 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056102 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056103 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056104 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056105 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056109 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056187 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056188 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056189 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056190 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056194 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056273 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056274 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056275 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056276 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056280 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056361 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056362 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056363 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056364 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056368 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056450 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056451 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056452 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056453 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056457 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056542 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056543 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056544 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056545 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056549 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056637 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056638 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056639 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056640 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056644 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056733 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056734 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056735 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056736 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056740 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056831 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056832 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056833 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056834 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056838 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056932 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056933 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056934 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056935 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1056939 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057033 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057034 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057035 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057036 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057040 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057138 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057139 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057140 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057141 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057145 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057242 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057243 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057244 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057245 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057249 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057347 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057348 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057349 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057350 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057354 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057453 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057454 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057455 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057456 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057460 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057565 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057566 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057567 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057568 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057572 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057673 is a reply to message #1043770]

Wed, 08 May 2013 06:01

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057674 is a reply to message #1043770]

Wed, 08 May 2013 06:05

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057675 is a reply to message #1043770]

Wed, 08 May 2013 06:06

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057676 is a reply to message #1043770]

Wed, 08 May 2013 06:09

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057680 is a reply to message #1043770]

Wed, 08 May 2013 06:36

Eclipse User

Re: Reading pixel color on SWT canvas at mouse pointer [message #1057719 is a reply to message #1055574]

Wed, 08 May 2013 08:52

Eclipse User

Sorry for so many replies, bug in the forum...

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