Example usage for org.eclipse.swt.graphics Color dispose

List of usage examples for org.eclipse.swt.graphics Color dispose

  1. HOME
  2. Java
  3. org.eclipse.swt
  4. org.eclipse.swt.graphics.*
  5. Color
  6. dispose

Introduction

In this page you can find the example usage for org.eclipse.swt.graphics Color dispose.

Prototype

public void dispose()

Source Link

Usage

From source file:org.eclipse.swt.examples.controlexample.CTabFolderTab.java

/**
 * Sets the foreground color, background color, and font
 * of the "Example" widgets to their default settings.
 * Also sets foreground and background color of the Node 1
 * TreeItems to default settings./*  w  w  w.  ja v  a 2  s.  co m*/
 */
@Override
void resetColorsAndFonts() {
    super.resetColorsAndFonts();
    Color oldColor = selectionForegroundColor;
    selectionForegroundColor = null;
    setSelectionForeground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = selectionBackgroundColor;
    selectionBackgroundColor = null;
    setSelectionBackground();
    if (oldColor != null)
        oldColor.dispose();
    Font oldFont = itemFont;
    itemFont = null;
    setItemFont();
    if (oldFont != null)
        oldFont.dispose();
}

From source file:org.eclipse.swt.examples.graphics.GradientDialog.java

/**
 * Creates the controls of the dialog.// w  w  w.ja  v a  2  s.c o m
 * */
public void createDialogControls(final Shell parent) {
    final Display display = parent.getDisplay();

    // message
    Label message = new Label(parent, SWT.NONE);
    message.setText(GraphicsExample.getResourceString("GradientDlgMsg"));
    GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
    gridData.horizontalSpan = 2;
    message.setLayoutData(gridData);

    // default colors are white and black
    if (rgb1 == null || rgb2 == null) {
        rgb1 = display.getSystemColor(SWT.COLOR_WHITE).getRGB();
        rgb2 = display.getSystemColor(SWT.COLOR_BLACK).getRGB();
    }

    // canvas
    canvas = new Canvas(parent, SWT.NONE);
    gridData = new GridData(GridData.FILL_BOTH);
    gridData.widthHint = 200;
    gridData.heightHint = 100;
    canvas.setLayoutData(gridData);
    canvas.addListener(SWT.Paint, e -> {
        Image preview = null;
        Point size = canvas.getSize();
        Color color1 = new Color(display, rgb1);
        Color color2 = new Color(display, rgb2);
        preview = GraphicsExample.createImage(display, color1, color2, size.x, size.y);
        if (preview != null) {
            e.gc.drawImage(preview, 0, 0);
        }
        preview.dispose();
        color1.dispose();
        color2.dispose();
    });

    // composite used for both color buttons
    Composite colorButtonComp = new Composite(parent, SWT.NONE);

    // layout buttons
    RowLayout layout = new RowLayout();
    layout.type = SWT.VERTICAL;
    layout.pack = false;
    colorButtonComp.setLayout(layout);

    // position composite
    gridData = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
    colorButtonComp.setLayoutData(gridData);

    ColorMenu colorMenu = new ColorMenu();

    // color controls: first color
    colorButton1 = new Button(colorButtonComp, SWT.PUSH);
    colorButton1.setText(GraphicsExample.getResourceString("GradientDlgButton1"));
    Color color1 = new Color(display, rgb1);
    Image img1 = GraphicsExample.createImage(display, color1);
    color1.dispose();
    colorButton1.setImage(img1);
    resources.add(img1);
    menu1 = colorMenu.createMenu(parent.getParent(), gb -> {
        rgb1 = gb.getBgColor1().getRGB();
        colorButton1.setImage(gb.getThumbNail());
        if (canvas != null)
            canvas.redraw();
    });
    colorButton1.addListener(SWT.Selection, event -> {
        final Button button = (Button) event.widget;
        final Composite parent1 = button.getParent();
        Rectangle bounds = button.getBounds();
        Point point = parent1.toDisplay(new Point(bounds.x, bounds.y));
        menu1.setLocation(point.x, point.y + bounds.height);
        menu1.setVisible(true);
    });

    // color controls: second color
    colorButton2 = new Button(colorButtonComp, SWT.PUSH);
    colorButton2.setText(GraphicsExample.getResourceString("GradientDlgButton2"));
    Color color2 = new Color(display, rgb2);
    Image img2 = GraphicsExample.createImage(display, color2);
    color2.dispose();
    colorButton2.setImage(img2);
    resources.add(img2);
    menu2 = colorMenu.createMenu(parent.getParent(), gb -> {
        rgb2 = gb.getBgColor1().getRGB();
        colorButton2.setImage(gb.getThumbNail());
        if (canvas != null)
            canvas.redraw();
    });
    colorButton2.addListener(SWT.Selection, event -> {
        final Button button = (Button) event.widget;
        final Composite parent1 = button.getParent();
        Rectangle bounds = button.getBounds();
        Point point = parent1.toDisplay(new Point(bounds.x, bounds.y));
        menu2.setLocation(point.x, point.y + bounds.height);
        menu2.setVisible(true);
    });

    // composite used for ok and cancel buttons
    Composite okCancelComp = new Composite(parent, SWT.NONE);

    // layout buttons
    RowLayout rowLayout = new RowLayout();
    rowLayout.pack = false;
    rowLayout.marginTop = 5;
    okCancelComp.setLayout(rowLayout);

    // position composite
    gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
    gridData.horizontalSpan = 2;
    okCancelComp.setLayoutData(gridData);

    // OK button
    okButton = new Button(okCancelComp, SWT.PUSH);
    okButton.setText("&OK");
    okButton.addListener(SWT.Selection, event -> {
        returnVal = SWT.OK;
        parent.close();
    });

    // cancel button
    cancelButton = new Button(okCancelComp, SWT.PUSH);
    cancelButton.setText("&Cancel");
    cancelButton.addListener(SWT.Selection, event -> parent.close());
}

From source file:org.eclipse.swt.snippets.Snippet133.java

void print(Printer printer) {
    if (printer.startJob("Text")) { // the string is the job name - shows up in the printer's job list
        Rectangle clientArea = printer.getClientArea();
        Rectangle trim = printer.computeTrim(0, 0, 0, 0);
        Point dpi = printer.getDPI();
        leftMargin = dpi.x + trim.x; // one inch from left side of paper
        rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one inch from right side of paper
        topMargin = dpi.y + trim.y; // one inch from top edge of paper
        bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one inch from bottom edge of paper

        /* Create a buffer for computing tab width. */
        int tabSize = 4; // is tab width a user setting in your UI?
        StringBuilder tabBuffer = new StringBuilder(tabSize);
        for (int i = 0; i < tabSize; i++)
            tabBuffer.append(' ');
        tabs = tabBuffer.toString();// w  ww .  ja  v  a  2s . c om

        /* Create printer GC, and create and set the printer font & foreground color. */
        gc = new GC(printer);
        Font printerFont = new Font(printer, printerFontData);
        Color printerForegroundColor = new Color(printer, printerForeground);
        Color printerBackgroundColor = new Color(printer, printerBackground);

        gc.setFont(printerFont);
        gc.setForeground(printerForegroundColor);
        gc.setBackground(printerBackgroundColor);
        tabWidth = gc.stringExtent(tabs).x;
        lineHeight = gc.getFontMetrics().getHeight();

        /* Print text to current gc using word wrap */
        printText();
        printer.endJob();

        /* Cleanup graphics resources used in printing */
        printerFont.dispose();
        printerForegroundColor.dispose();
        printerBackgroundColor.dispose();
        gc.dispose();
    }
}

From source file:org.eclipse.swt.examples.controlexample.TableTab.java

/**
 * Sets the foreground color, background color, and font
 * of the "Example" widgets to their default settings.
 * Also sets foreground and background color of TableItem [0]
 * to default settings.//  w  w w.  j  a va2  s .c  o  m
 */
@Override
void resetColorsAndFonts() {
    super.resetColorsAndFonts();
    Color oldColor = itemForegroundColor;
    itemForegroundColor = null;
    setItemForeground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = itemBackgroundColor;
    itemBackgroundColor = null;
    setItemBackground();
    if (oldColor != null)
        oldColor.dispose();
    Font oldFont = font;
    itemFont = null;
    setItemFont();
    if (oldFont != null)
        oldFont.dispose();
    oldColor = cellForegroundColor;
    cellForegroundColor = null;
    setCellForeground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = cellBackgroundColor;
    cellBackgroundColor = null;
    setCellBackground();
    if (oldColor != null)
        oldColor.dispose();
    oldFont = font;
    cellFont = null;
    setCellFont();
    if (oldFont != null)
        oldFont.dispose();
    oldColor = headerBackgroundColor;
    headerBackgroundColor = null;
    setHeaderBackground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = headerForegroundColor;
    headerForegroundColor = null;
    setHeaderForeground();
    if (oldColor != null)
        oldColor.dispose();
}

From source file:PrintTextWrapPagetation.java

void print(Printer printer) {
    if (printer.startJob("Text")) { // the string is the job name - shows up in
                                    // the printer's job list
        Rectangle clientArea = printer.getClientArea();
        Rectangle trim = printer.computeTrim(0, 0, 0, 0);
        Point dpi = printer.getDPI();
        leftMargin = dpi.x + trim.x; // one inch from left side of paper
        rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one inch
                                                                      // from
                                                                      // right
                                                                      // side of
                                                                      // paper
        topMargin = dpi.y + trim.y; // one inch from top edge of paper
        bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one
                                                                         // inch
                                                                         // from
                                                                         // bottom
                                                                         // edge
                                                                         // of
                                                                         // paper

        /* Create a buffer for computing tab width. */
        int tabSize = 4; // is tab width a user setting in your UI?
        StringBuffer tabBuffer = new StringBuffer(tabSize);
        for (int i = 0; i < tabSize; i++)
            tabBuffer.append(' ');
        tabs = tabBuffer.toString();// w  w  w  .ja  v  a 2  s . c o  m

        /*
         * Create printer GC, and create and set the printer font & foreground
         * color.
         */
        gc = new GC(printer);
        Font printerFont = new Font(printer, printerFontData);
        Color printerForegroundColor = new Color(printer, printerForeground);
        Color printerBackgroundColor = new Color(printer, printerBackground);

        gc.setFont(printerFont);
        gc.setForeground(printerForegroundColor);
        gc.setBackground(printerBackgroundColor);
        tabWidth = gc.stringExtent(tabs).x;
        lineHeight = gc.getFontMetrics().getHeight();

        /* Print text to current gc using word wrap */
        printText();
        printer.endJob();

        /* Cleanup graphics resources used in printing */
        printerFont.dispose();
        printerForegroundColor.dispose();
        printerBackgroundColor.dispose();
        gc.dispose();
    }
}

From source file:org.eclipse.swt.examples.controlexample.CTabFolderTab.java

@Override
void changeFontOrColor(int index) {
    switch (index) {
    case SELECTION_FOREGROUND_COLOR: {
        Color oldColor = selectionForegroundColor;
        if (oldColor == null)
            oldColor = tabFolder1.getSelectionForeground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();/*w w w . j a  va 2  s .c  o  m*/
        if (rgb == null)
            return;
        oldColor = selectionForegroundColor;
        selectionForegroundColor = new Color(display, rgb);
        setSelectionForeground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case SELECTION_BACKGROUND_COLOR: {
        Color oldColor = selectionBackgroundColor;
        if (oldColor == null)
            oldColor = tabFolder1.getSelectionBackground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = selectionBackgroundColor;
        selectionBackgroundColor = new Color(display, rgb);
        setSelectionBackground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case ITEM_FONT: {
        Font oldFont = itemFont;
        if (oldFont == null)
            oldFont = tabFolder1.getItem(0).getFont();
        fontDialog.setFontList(oldFont.getFontData());
        FontData fontData = fontDialog.open();
        if (fontData == null)
            return;
        oldFont = itemFont;
        itemFont = new Font(display, fontData);
        setItemFont();
        setExampleWidgetSize();
        if (oldFont != null)
            oldFont.dispose();
    }
        break;
    default:
        super.changeFontOrColor(index);
    }
}

From source file:org.eclipse.swt.examples.controlexample.TreeTab.java

/**
 * Sets the foreground color, background color, and font
 * of the "Example" widgets to their default settings.
 * Also sets foreground and background color of the Node 1
 * TreeItems to default settings.//from   www. j  a  v a2 s  .com
 */
@Override
void resetColorsAndFonts() {
    super.resetColorsAndFonts();
    Color oldColor = itemForegroundColor;
    itemForegroundColor = null;
    setItemForeground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = itemBackgroundColor;
    itemBackgroundColor = null;
    setItemBackground();
    if (oldColor != null)
        oldColor.dispose();
    Font oldFont = font;
    itemFont = null;
    setItemFont();
    if (oldFont != null)
        oldFont.dispose();
    oldColor = cellForegroundColor;
    cellForegroundColor = null;
    setCellForeground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = cellBackgroundColor;
    cellBackgroundColor = null;
    setCellBackground();
    if (oldColor != null)
        oldColor.dispose();
    oldFont = font;
    cellFont = null;
    setCellFont();
    if (oldFont != null)
        oldFont.dispose();
    oldColor = headerBackgroundColor;
    headerBackgroundColor = null;
    setHeaderBackground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = headerForegroundColor;
    headerForegroundColor = null;
    setHeaderForeground();
    if (oldColor != null)
        oldColor.dispose();

}

From source file:org.eclipse.swt.examples.controlexample.TableTab.java

@Override
void changeFontOrColor(int index) {
    switch (index) {
    case ITEM_FOREGROUND_COLOR: {
        Color oldColor = itemForegroundColor;
        if (oldColor == null)
            oldColor = table1.getItem(0).getForeground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();/*from  ww  w.ja v  a  2s.c om*/
        if (rgb == null)
            return;
        oldColor = itemForegroundColor;
        itemForegroundColor = new Color(display, rgb);
        setItemForeground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case ITEM_BACKGROUND_COLOR: {
        Color oldColor = itemBackgroundColor;
        if (oldColor == null)
            oldColor = table1.getItem(0).getBackground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = itemBackgroundColor;
        itemBackgroundColor = new Color(display, rgb);
        setItemBackground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case ITEM_FONT: {
        Font oldFont = itemFont;
        if (oldFont == null)
            oldFont = table1.getItem(0).getFont();
        fontDialog.setFontList(oldFont.getFontData());
        FontData fontData = fontDialog.open();
        if (fontData == null)
            return;
        oldFont = itemFont;
        itemFont = new Font(display, fontData);
        setItemFont();
        setExampleWidgetSize();
        if (oldFont != null)
            oldFont.dispose();
    }
        break;
    case CELL_FOREGROUND_COLOR: {
        Color oldColor = cellForegroundColor;
        if (oldColor == null)
            oldColor = table1.getItem(0).getForeground(1);
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = cellForegroundColor;
        cellForegroundColor = new Color(display, rgb);
        setCellForeground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case CELL_BACKGROUND_COLOR: {
        Color oldColor = cellBackgroundColor;
        if (oldColor == null)
            oldColor = table1.getItem(0).getBackground(1);
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = cellBackgroundColor;
        cellBackgroundColor = new Color(display, rgb);
        setCellBackground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case CELL_FONT: {
        Font oldFont = cellFont;
        if (oldFont == null)
            oldFont = table1.getItem(0).getFont(1);
        fontDialog.setFontList(oldFont.getFontData());
        FontData fontData = fontDialog.open();
        if (fontData == null)
            return;
        oldFont = cellFont;
        cellFont = new Font(display, fontData);
        setCellFont();
        setExampleWidgetSize();
        if (oldFont != null)
            oldFont.dispose();
    }
        break;
    case HEADER_FOREGROUND_COLOR: {
        Color oldColor = headerForegroundColor;
        if (oldColor == null)
            oldColor = table1.getHeaderForeground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = headerForegroundColor;
        headerForegroundColor = new Color(display, rgb);
        setHeaderForeground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case HEADER_BACKGROUND_COLOR: {
        Color oldColor = headerBackgroundColor;
        if (oldColor == null)
            oldColor = table1.getHeaderBackground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = headerBackgroundColor;
        headerBackgroundColor = new Color(display, rgb);
        setHeaderBackground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    default:
        super.changeFontOrColor(index);
    }
}

From source file:org.eclipse.swt.examples.controlexample.TreeTab.java

@Override
void changeFontOrColor(int index) {
    switch (index) {
    case ITEM_FOREGROUND_COLOR: {
        Color oldColor = itemForegroundColor;
        if (oldColor == null)
            oldColor = textNode1.getForeground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();/*from ww  w. j  a va2s  .c  o m*/
        if (rgb == null)
            return;
        oldColor = itemForegroundColor;
        itemForegroundColor = new Color(display, rgb);
        setItemForeground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case ITEM_BACKGROUND_COLOR: {
        Color oldColor = itemBackgroundColor;
        if (oldColor == null)
            oldColor = textNode1.getBackground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = itemBackgroundColor;
        itemBackgroundColor = new Color(display, rgb);
        setItemBackground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case ITEM_FONT: {
        Font oldFont = itemFont;
        if (oldFont == null)
            oldFont = textNode1.getFont();
        fontDialog.setFontList(oldFont.getFontData());
        FontData fontData = fontDialog.open();
        if (fontData == null)
            return;
        oldFont = itemFont;
        itemFont = new Font(display, fontData);
        setItemFont();
        setExampleWidgetSize();
        if (oldFont != null)
            oldFont.dispose();
    }
        break;
    case CELL_FOREGROUND_COLOR: {
        Color oldColor = cellForegroundColor;
        if (oldColor == null)
            oldColor = textNode1.getForeground(1);
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = cellForegroundColor;
        cellForegroundColor = new Color(display, rgb);
        setCellForeground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case CELL_BACKGROUND_COLOR: {
        Color oldColor = cellBackgroundColor;
        if (oldColor == null)
            oldColor = textNode1.getBackground(1);
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = cellBackgroundColor;
        cellBackgroundColor = new Color(display, rgb);
        setCellBackground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case CELL_FONT: {
        Font oldFont = cellFont;
        if (oldFont == null)
            oldFont = textNode1.getFont(1);
        fontDialog.setFontList(oldFont.getFontData());
        FontData fontData = fontDialog.open();
        if (fontData == null)
            return;
        oldFont = cellFont;
        cellFont = new Font(display, fontData);
        setCellFont();
        setExampleWidgetSize();
        if (oldFont != null)
            oldFont.dispose();
    }
        break;
    case HEADER_FOREGROUND_COLOR: {
        Color oldColor = headerForegroundColor;
        if (oldColor == null)
            oldColor = tree1.getHeaderForeground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = headerForegroundColor;
        headerForegroundColor = new Color(display, rgb);
        setHeaderForeground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case HEADER_BACKGROUND_COLOR: {
        Color oldColor = headerBackgroundColor;
        if (oldColor == null)
            oldColor = tree1.getHeaderBackground();
        colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = headerBackgroundColor;
        headerBackgroundColor = new Color(display, rgb);
        setHeaderBackground();
        if (oldColor != null)
            oldColor.dispose();
    }
    default:
        super.changeFontOrColor(index);
    }
}

From source file:com.planetmayo.debrief.satc_rcp.views.MaintainContributionsView.java

@Override
public void dispose() {
    context.dispose();/*from w  w  w  . j  a  v  a 2 s . c om*/
    setActiveSolver(null);
    solversManager.removeSolverManagerListener(solverManagerListener);

    // ditch the colors
    if (assignedColors != null) {
        Iterator<Color> cIter = assignedColors.values().iterator();
        while (cIter.hasNext()) {
            org.eclipse.swt.graphics.Color entry = cIter.next();
            entry.dispose();
        }
        assignedColors = null;
    }

    // and our SWT black shade
    if (!_colorBlack.isDisposed())
        _colorBlack.dispose();

    super.dispose();
}