public class ControlEditor extends Object
Here is an example of using a ControlEditor:
Canvas canvas = new Canvas(shell, SWT.BORDER);
canvas.setBounds(10, 10, 300, 300);
Color color = new Color(null, 255, 0, 0);
canvas.setBackground(color);
ControlEditor editor = new ControlEditor (canvas);
// The editor will be a button in the bottom right corner of the canvas.
// When selected, it will launch a Color dialog that will change the background
// of the canvas.
Button button = new Button(canvas, SWT.PUSH);
button.setText("Select Color...");
button.addSelectionListener (new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
ColorDialog dialog = new ColorDialog(shell);
dialog.open();
RGB rgb = dialog.getRGB();
if (rgb != null) {
if (color != null) color.dispose();
color = new Color(null, rgb);
canvas.setBackground(color);
}
}
});
editor.horizontalAlignment = SWT.RIGHT;
editor.verticalAlignment = SWT.BOTTOM;
editor.grabHorizontal = false;
editor.grabVertical = false;
Point size = button.computeSize(SWT.DEFAULT, SWT.DEFAULT);
editor.minimumWidth = size.x;
editor.minimumHeight = size.y;
editor.setEditor (button);
Modifier and Type | Field and Description |
---|---|
boolean |
grabHorizontal
Specifies whether the editor should be sized to use the entire width of the control.
|
boolean |
grabVertical
Specifies whether the editor should be sized to use the entire height of the control.
|
int |
horizontalAlignment
Specifies how the editor should be aligned relative to the control.
|
int |
minimumHeight
Specifies the minimum height the editor can have.
|
int |
minimumWidth
Specifies the minimum width the editor can have.
|
int |
verticalAlignment
Specifies how the editor should be aligned relative to the control.
|
Constructor and Description |
---|
ControlEditor(Composite parent)
Creates a ControlEditor for the specified Composite.
|
Modifier and Type | Method and Description |
---|---|
void |
dispose()
Removes all associations between the Editor and the underlying composite.
|
Control |
getEditor()
Returns the Control that is displayed above the composite being edited.
|
void |
layout()
Lays out the control within the underlying composite.
|
void |
setEditor(Control editor)
Specify the Control that is to be displayed.
|
public int horizontalAlignment
public boolean grabHorizontal
public int minimumWidth
public int verticalAlignment
public boolean grabVertical
public int minimumHeight
public ControlEditor(Composite parent)
parent
- the Composite above which this editor will be displayedpublic void dispose()
public Control getEditor()
public void layout()
public void setEditor(Control editor)
Note: The Control provided as the editor must be created with its parent being the Composite specified in the ControlEditor constructor.
editor
- the Control that is displayed above the composite being editedCopyright © 2017. All Rights Reserved.