public void setImage(Image image) {
checkWidget();
if ((style & SWT.SEPARATOR) != 0) return;
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
super.setImage(image);
updateImages(getEnabled() && parent.getEnabled());
}
/**
* Returns a point describing the receiver's size.
*
* @return the receiver's size
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public Point getSize() {
checkWidget();
if (image != null) {
Rectangle rect = image.getBounds();
return new Point(rect.width, rect.height);
}
return new Point(width, height);
}
/**
* Returns a rectangle describing the receiver's size and location relative to its parent (or its
* display if its parent is null).
*
* @return the receiver's bounding rectangle
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public Rectangle getBounds() {
checkWidget();
if (image != null) {
Rectangle rect = image.getBounds();
return new Rectangle(x, y, rect.width, rect.height);
}
return new Rectangle(x, y, width, height);
}
void resize(int width, int height) {
if (image != null) {
Rectangle rect = image.getBounds();
width = rect.width;
height = rect.height;
}
if (width == 0) width = 1;
OS.FrameworkElement_Width(handle, width);
OS.FrameworkElement_Height(handle, height);
}
/**
* Sets the image that the receiver will use to paint the caret to the image specified by the
* argument, or to the default which is a filled rectangle if the argument is null
*
* @param image the new image (or null)
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the image has been disposed
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setImage(Image image) {
checkWidget();
if (image != null && image.isDisposed()) {
error(SWT.ERROR_INVALID_ARGUMENT);
}
this.image = image;
if (image != null) {
OS.Image_Source(imageHandle, image.handle);
OS.UIElement_Visibility(imageHandle, OS.Visibility_Visible);
} else {
OS.Image_Source(imageHandle, 0);
OS.UIElement_Visibility(imageHandle, OS.Visibility_Collapsed);
}
resize(width, height);
}
/**
* Sets the receiver's image to the argument, which may be <code>null</code> indicating that no
* image should be displayed.
*
* <p>Note that a Button can display an image and text simultaneously on Windows (starting with
* XP), GTK+ and OSX. On other platforms, a Button that has an image and text set into it will
* display the image or text that was set most recently.
*
* @param image the image to display on the receiver (may be <code>null</code>)
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the image has been disposed
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setImage(Image image) {
checkWidget();
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if ((style & SWT.ARROW) != 0) return;
this.image = image;
OS.Image_Source(imageHandle, image != null ? image.handle : 0);
OS.UIElement_Visibility(
imageHandle, image != null ? OS.Visibility_Visible : OS.Visibility_Collapsed);
OS.UIElement_Visibility(
textHandle,
image != null && text.length() == 0 ? OS.Visibility_Collapsed : OS.Visibility_Visible);
int spacing = image != null && text.length() != 0 ? 3 : 0;
int margin = OS.gcnew_Thickness(0, 0, spacing, 0);
if (margin == 0) error(SWT.ERROR_NO_HANDLES);
OS.FrameworkElement_Margin(imageHandle, margin);
OS.GCHandle_Free(margin);
}