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

Introduction

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

Prototype

public boolean isDisposed() 

Source Link

Usage

From source file:cookxml.cookswt.util.SwtUtils.java

/**
 * Dispose a color if it is not a system color.
 *
 * @param   color The color to be disposed.
 * @param   device The device that contains the color.
 *///from ww w .  ja v  a  2 s.c  o m
public static void disposeColor(Color color, Device device) {
    if (color.isDisposed())
        return;
    if (!isSystemColor(color, device)) {
        assert disposeDebug("Dispose color: " + color);
        color.dispose();
    }
}

---

From source file:org.eclipse.swt.examples.accessibility.CTableItem.java

/**
 * Sets the receiver's background color to the color specified
 * by the argument, or to the default system color for the item
 * if the argument is null./*from  w  w  w  . jav  a2 s . co m*/
 *
 * @param color the new color (or null)
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 2.0
 */
public void setBackground(Color color) {
    checkWidget();
    if (color != null && color.isDisposed()) {
        SWT.error(SWT.ERROR_INVALID_ARGUMENT);
    }
    Color oldColor = background;
    if (oldColor == color)
        return;
    background = color;
    if (oldColor != null && oldColor.equals(color))
        return;
    if ((parent.getStyle() & SWT.VIRTUAL) != 0)
        cached = true;
    redrawItem();
}

---

From source file:org.eclipse.swt.examples.accessibility.CTableItem.java

/**
 * Sets the receiver's foreground color to the color specified
 * by the argument, or to the default system color for the item
 * if the argument is null.//  w w w. j av  a  2s.  c  om
 *
 * @param color the new color (or null)
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 2.0
 */
public void setForeground(Color color) {
    checkWidget();
    if (color != null && color.isDisposed()) {
        SWT.error(SWT.ERROR_INVALID_ARGUMENT);
    }
    Color oldColor = foreground;
    if (oldColor == color)
        return;
    foreground = color;
    if (oldColor != null && oldColor.equals(color))
        return;
    if ((parent.getStyle() & SWT.VIRTUAL) != 0)
        cached = true;
    redrawItem();
}

---

From source file:org.eclipse.swt.examples.accessibility.CTableItem.java

/**
 * Sets the background color at the given column index in the receiver
 * to the color specified by the argument, or to the default system color for the item
 * if the argument is null.// w  ww. ja va  2s . c  o  m
 *
 * @param index the column index
 * @param color the new color (or null)
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.0
 */
public void setBackground(int columnIndex, Color color) {
    checkWidget();
    if (color != null && color.isDisposed()) {
        SWT.error(SWT.ERROR_INVALID_ARGUMENT);
    }
    int validColumnCount = Math.max(1, parent.columns.length);
    if (!(0 <= columnIndex && columnIndex < validColumnCount))
        return;
    if (cellBackgrounds == null) {
        if (color == null)
            return;
        cellBackgrounds = new Color[validColumnCount];
    }
    Color oldColor = cellBackgrounds[columnIndex];
    if (oldColor == color)
        return;
    cellBackgrounds[columnIndex] = color;
    if (oldColor != null && oldColor.equals(color))
        return;
    if ((parent.getStyle() & SWT.VIRTUAL) != 0)
        cached = true;

    if (isInViewport()) {
        Rectangle bounds = getCellBounds(columnIndex);
        parent.redraw(bounds.x, bounds.y, bounds.width, bounds.height, false);
    }
}

---

From source file:org.eclipse.swt.examples.accessibility.CTableItem.java

/**
 * Sets the foreground color at the given column index in the receiver
 * to the color specified by the argument, or to the default system color for the item
 * if the argument is null./*from  w w w  .j a v a2 s  .  c  o  m*/
 *
 * @param index the column index
 * @param color the new color (or null)
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @since 3.0
 */
public void setForeground(int columnIndex, Color color) {
    checkWidget();
    if (color != null && color.isDisposed()) {
        SWT.error(SWT.ERROR_INVALID_ARGUMENT);
    }
    int validColumnCount = Math.max(1, parent.columns.length);
    if (!(0 <= columnIndex && columnIndex < validColumnCount))
        return;
    if (cellForegrounds == null) {
        if (color == null)
            return;
        cellForegrounds = new Color[validColumnCount];
    }
    Color oldColor = cellForegrounds[columnIndex];
    if (oldColor == color)
        return;
    cellForegrounds[columnIndex] = color;
    if (oldColor != null && oldColor.equals(color))
        return;
    if ((parent.getStyle() & SWT.VIRTUAL) != 0)
        cached = true;

    if (isInViewport()) {
        redraw(getTextX(columnIndex), parent.getItemY(this), textWidths[columnIndex] + 2 * MARGIN_TEXT,
                parent.itemHeight, columnIndex);
    }
}

---