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

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

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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:CustomControlExample.java

/**
 * Creates the "Colors" group.//from  ww  w  .j  a v  a2s. c o m
 */
void createColorGroup() {
    super.createColorGroup();

    itemGroup = new Group(colorGroup, SWT.NONE);
    itemGroup.setText(ControlExample.getResourceString("Table_Item_Colors"));
    GridData data = new GridData();
    data.horizontalSpan = 2;
    itemGroup.setLayoutData(data);
    itemGroup.setLayout(new GridLayout(2, false));
    new Label(itemGroup, SWT.NONE).setText(ControlExample.getResourceString("Foreground_Color"));
    itemForegroundButton = new Button(itemGroup, SWT.PUSH);
    new Label(itemGroup, SWT.NONE).setText(ControlExample.getResourceString("Background_Color"));
    itemBackgroundButton = new Button(itemGroup, SWT.PUSH);
    itemFontButton = new Button(itemGroup, SWT.PUSH);
    itemFontButton.setText(ControlExample.getResourceString("Font"));
    itemFontButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));

    Shell shell = colorGroup.getShell();
    final ColorDialog foregroundDialog = new ColorDialog(shell);
    final ColorDialog backgroundDialog = new ColorDialog(shell);
    final FontDialog fontDialog = new FontDialog(shell);

    int imageSize = 12;
    Display display = shell.getDisplay();
    itemForegroundImage = new Image(display, imageSize, imageSize);
    itemBackgroundImage = new Image(display, imageSize, imageSize);

    /* Add listeners to set the colors and font */
    itemForegroundButton.setImage(itemForegroundImage);
    itemForegroundButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = itemForegroundColor;
            if (oldColor == null)
                oldColor = table1.getItem(0).getForeground();
            foregroundDialog.setRGB(oldColor.getRGB());
            RGB rgb = foregroundDialog.open();
            if (rgb == null)
                return;
            oldColor = itemForegroundColor;
            itemForegroundColor = new Color(event.display, rgb);
            setItemForeground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    itemBackgroundButton.setImage(itemBackgroundImage);
    itemBackgroundButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = itemBackgroundColor;
            if (oldColor == null)
                oldColor = table1.getItem(0).getBackground();
            backgroundDialog.setRGB(oldColor.getRGB());
            RGB rgb = backgroundDialog.open();
            if (rgb == null)
                return;
            oldColor = itemBackgroundColor;
            itemBackgroundColor = new Color(event.display, rgb);
            setItemBackground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    itemFontButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            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(event.display, fontData);
            setItemFont();
            setExampleWidgetSize();
            if (oldFont != null)
                oldFont.dispose();
        }
    });
    shell.addDisposeListener(new DisposeListener() {
        public void widgetDisposed(DisposeEvent event) {
            if (itemBackgroundImage != null)
                itemBackgroundImage.dispose();
            if (itemForegroundImage != null)
                itemForegroundImage.dispose();
            if (itemBackgroundColor != null)
                itemBackgroundColor.dispose();
            if (itemForegroundColor != null)
                itemForegroundColor.dispose();
            if (itemFont != null)
                itemFont.dispose();
            itemBackgroundColor = null;
            itemForegroundColor = null;
            itemFont = null;
        }
    });
}

From source file:CustomControlExample.java

/**
 * Creates the "Colors" group. This is typically a child of the "Control"
 * group. Subclasses override this method to customize and set system
 * colors.// w w w.ja v a2s .  c  o m
 */
void createColorGroup() {
    /* Create the group */
    colorGroup = new Group(controlGroup, SWT.NONE);
    colorGroup.setLayout(new GridLayout(2, false));
    colorGroup.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
    colorGroup.setText(ControlExample.getResourceString("Colors"));
    new Label(colorGroup, SWT.NONE).setText(ControlExample.getResourceString("Foreground_Color"));
    foregroundButton = new Button(colorGroup, SWT.PUSH);
    new Label(colorGroup, SWT.NONE).setText(ControlExample.getResourceString("Background_Color"));
    backgroundButton = new Button(colorGroup, SWT.PUSH);
    fontButton = new Button(colorGroup, SWT.PUSH);
    fontButton.setText(ControlExample.getResourceString("Font"));
    fontButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
    Button defaultsButton = new Button(colorGroup, SWT.PUSH);
    defaultsButton.setText(ControlExample.getResourceString("Defaults"));

    Shell shell = controlGroup.getShell();
    final ColorDialog foregroundDialog = new ColorDialog(shell);
    final ColorDialog backgroundDialog = new ColorDialog(shell);
    final FontDialog fontDialog = new FontDialog(shell);

    /* Create images to display current colors */
    int imageSize = 12;
    Display display = shell.getDisplay();
    foregroundImage = new Image(display, imageSize, imageSize);
    backgroundImage = new Image(display, imageSize, imageSize);

    /* Add listeners to set the colors and font */
    foregroundButton.setImage(foregroundImage); // sets the size of the
    // button
    foregroundButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = foregroundColor;
            if (oldColor == null) {
                Control[] controls = getExampleWidgets();
                if (controls.length > 0)
                    oldColor = controls[0].getForeground();
            }
            if (oldColor != null)
                foregroundDialog.setRGB(oldColor.getRGB()); // seed dialog
            // with current
            // color
            RGB rgb = foregroundDialog.open();
            if (rgb == null)
                return;
            oldColor = foregroundColor; // save old foreground color to
            // dispose when done
            foregroundColor = new Color(event.display, rgb);
            setExampleWidgetForeground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    backgroundButton.setImage(backgroundImage); // sets the size of the
    // button
    backgroundButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = backgroundColor;
            if (oldColor == null) {
                Control[] controls = getExampleWidgets();
                if (controls.length > 0)
                    oldColor = controls[0].getBackground(); // seed dialog
                // with current
                // color
            }
            if (oldColor != null)
                backgroundDialog.setRGB(oldColor.getRGB());
            RGB rgb = backgroundDialog.open();
            if (rgb == null)
                return;
            oldColor = backgroundColor; // save old background color to
            // dispose when done
            backgroundColor = new Color(event.display, rgb);
            setExampleWidgetBackground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    fontButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Font oldFont = font;
            if (oldFont == null) {
                Control[] controls = getExampleWidgets();
                if (controls.length > 0)
                    oldFont = controls[0].getFont();
            }
            if (oldFont != null)
                fontDialog.setFontList(oldFont.getFontData()); // seed
            // dialog
            // with
            // current
            // font
            FontData fontData = fontDialog.open();
            if (fontData == null)
                return;
            oldFont = font; // dispose old font when done
            font = new Font(event.display, fontData);
            setExampleWidgetFont();
            setExampleWidgetSize();
            if (oldFont != null)
                oldFont.dispose();
        }
    });
    defaultsButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent e) {
            resetColorsAndFonts();
        }
    });
    shell.addDisposeListener(new DisposeListener() {
        public void widgetDisposed(DisposeEvent event) {
            if (foregroundImage != null)
                foregroundImage.dispose();
            if (backgroundImage != null)
                backgroundImage.dispose();
            if (foregroundColor != null)
                foregroundColor.dispose();
            if (backgroundColor != null)
                backgroundColor.dispose();
            if (font != null)
                font.dispose();
            foregroundColor = null;
            backgroundColor = null;
            font = null;
        }
    });
}

From source file:CustomControlExample.java

/**
 * Creates the "Fonts" group./*from  ww w.  j a va2  s. co m*/
 */
void createColorGroup() {
    /* Create the group */
    colorGroup = new Group(controlGroup, SWT.NONE);
    colorGroup.setLayout(new GridLayout(2, false));
    colorGroup.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
    colorGroup.setText(ControlExample.getResourceString("Colors"));

    new Label(colorGroup, SWT.NONE).setText(ControlExample.getResourceString("Foreground_Color"));
    foregroundButton = new Button(colorGroup, SWT.PUSH);

    new Label(colorGroup, SWT.NONE).setText(ControlExample.getResourceString("Background_Color"));
    backgroundButton = new Button(colorGroup, SWT.PUSH);

    new Label(colorGroup, SWT.NONE).setText(ControlExample.getResourceString("Selection_Foreground_Color"));
    foregroundSelectionButton = new Button(colorGroup, SWT.PUSH);

    new Label(colorGroup, SWT.NONE).setText(ControlExample.getResourceString("Selection_Background_Color"));
    backgroundSelectionButton = new Button(colorGroup, SWT.PUSH);

    fontButton = new Button(colorGroup, SWT.PUSH);
    fontButton.setText(ControlExample.getResourceString("Font"));
    fontButton.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));

    itemFontButton = new Button(colorGroup, SWT.PUSH);
    itemFontButton.setText(ControlExample.getResourceString("Item_Font"));
    itemFontButton.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));

    Button defaultsButton = new Button(colorGroup, SWT.PUSH);
    defaultsButton.setText(ControlExample.getResourceString("Defaults"));

    Shell shell = controlGroup.getShell();
    final ColorDialog colorDialog = new ColorDialog(shell);
    final FontDialog fontDialog = new FontDialog(shell);

    /* Create images to display current colors */
    int imageSize = 12;
    Display display = shell.getDisplay();
    foregroundImage = new Image(display, imageSize, imageSize);
    backgroundImage = new Image(display, imageSize, imageSize);
    foregroundSelectionImage = new Image(display, imageSize, imageSize);
    backgroundSelectionImage = new Image(display, imageSize, imageSize);

    /* Add listeners to set the colors and font */
    foregroundButton.setImage(foregroundImage); // sets the size of the
    // button
    foregroundButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = foregroundColor;
            if (oldColor == null) {
                Control[] controls = getExampleWidgets();
                if (controls.length > 0)
                    oldColor = controls[0].getForeground();
            }
            if (oldColor != null)
                colorDialog.setRGB(oldColor.getRGB()); // seed dialog with
            // current color
            RGB rgb = colorDialog.open();
            if (rgb == null)
                return;
            oldColor = foregroundColor; // save old foreground color to
            // dispose when done
            foregroundColor = new Color(event.display, rgb);
            setExampleWidgetForeground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    backgroundButton.setImage(backgroundImage); // sets the size of the
    // button
    backgroundButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = backgroundColor;
            if (oldColor == null) {
                Control[] controls = getExampleWidgets();
                if (controls.length > 0)
                    oldColor = controls[0].getBackground(); // seed dialog
                // with current
                // color
            }
            if (oldColor != null)
                colorDialog.setRGB(oldColor.getRGB());
            RGB rgb = colorDialog.open();
            if (rgb == null)
                return;
            oldColor = backgroundColor; // save old background color to
            // dispose when done
            backgroundColor = new Color(event.display, rgb);
            setExampleWidgetBackground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    foregroundSelectionButton.setImage(foregroundSelectionImage); // sets
    // the
    // size
    // of
    // the
    // button
    foregroundSelectionButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = foregroundSelectionColor;
            if (oldColor == null) {
                Control[] controls = getExampleWidgets();
                if (controls.length > 0)
                    oldColor = controls[0].getForeground();
            }
            if (oldColor != null)
                colorDialog.setRGB(oldColor.getRGB()); // seed dialog with
            // current color
            RGB rgb = colorDialog.open();
            if (rgb == null)
                return;
            oldColor = foregroundSelectionColor; // save old foreground
            // color to dispose when
            // done
            foregroundSelectionColor = new Color(event.display, rgb);
            setExampleWidgetForeground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    backgroundSelectionButton.setImage(backgroundSelectionImage); // sets
    // the
    // size
    // of
    // the
    // button
    backgroundSelectionButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = backgroundSelectionColor;
            if (oldColor == null) {
                Control[] controls = getExampleWidgets();
                if (controls.length > 0)
                    oldColor = controls[0].getBackground(); // seed dialog
                // with current
                // color
            }
            if (oldColor != null)
                colorDialog.setRGB(oldColor.getRGB());
            RGB rgb = colorDialog.open();
            if (rgb == null)
                return;
            oldColor = backgroundSelectionColor; // save old background
            // color to dispose when
            // done
            backgroundSelectionColor = new Color(event.display, rgb);
            setExampleWidgetBackground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    fontButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Font oldFont = font;
            if (oldFont == null) {
                Control[] controls = getExampleWidgets();
                if (controls.length > 0)
                    oldFont = controls[0].getFont();
            }
            if (oldFont != null)
                fontDialog.setFontList(oldFont.getFontData()); // seed
            // dialog
            // with
            // current
            // font
            FontData fontData = fontDialog.open();
            if (fontData == null)
                return;
            oldFont = font; // dispose old font when done
            font = new Font(event.display, fontData);
            setExampleWidgetFont();
            setExampleWidgetSize();
            if (oldFont != null)
                oldFont.dispose();
        }
    });

    /* Add listeners to set the colors and font */
    itemFontButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            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(event.display, fontData);
            setItemFont();
            setExampleWidgetSize();
            if (oldFont != null)
                oldFont.dispose();
        }
    });

    defaultsButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent e) {
            resetColorsAndFonts();
        }
    });

    shell.addDisposeListener(new DisposeListener() {
        public void widgetDisposed(DisposeEvent event) {
            if (foregroundImage != null)
                foregroundImage.dispose();
            if (backgroundImage != null)
                backgroundImage.dispose();
            if (foregroundColor != null)
                foregroundColor.dispose();
            if (backgroundColor != null)
                backgroundColor.dispose();
            if (font != null)
                font.dispose();
            foregroundColor = null;
            backgroundColor = null;
            font = null;
            if (foregroundSelectionImage != null)
                foregroundSelectionImage.dispose();
            if (backgroundSelectionImage != null)
                backgroundSelectionImage.dispose();
            if (foregroundSelectionColor != null)
                foregroundSelectionColor.dispose();
            if (backgroundSelectionColor != null)
                backgroundSelectionColor.dispose();
            foregroundSelectionColor = null;
            backgroundSelectionColor = null;
            if (itemFont != null)
                itemFont.dispose();
            itemFont = null;
        }
    });
}