public Resizer(Control c, int dir) {
fDirection = dir;
fControl = c;
fLiveResize = !(fControl instanceof Sash);
updateCursor(c, dir);
fControl.addMouseListener(this);
fControl.addMouseMoveListener(this);
fControl.addDisposeListener(
new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
fControl = null;
}
});
}
void updateCursor(Control c, int dir) {
if (!(c instanceof Sash)) {
Cursor cursor = null;
switch (dir) {
case VERTICAL:
if (fAncestorVisible) {
if (fVSashCursor == null) fVSashCursor = new Cursor(c.getDisplay(), SWT.CURSOR_SIZENS);
cursor = fVSashCursor;
} else {
if (fNormalCursor == null) fNormalCursor = new Cursor(c.getDisplay(), SWT.CURSOR_ARROW);
cursor = fNormalCursor;
}
break;
case HORIZONTAL:
if (fHSashCursor == null) fHSashCursor = new Cursor(c.getDisplay(), SWT.CURSOR_SIZEWE);
cursor = fHSashCursor;
break;
case VERTICAL + HORIZONTAL:
if (fAncestorVisible) {
if (fHVSashCursor == null)
fHVSashCursor = new Cursor(c.getDisplay(), SWT.CURSOR_SIZEALL);
cursor = fHVSashCursor;
} else {
if (fHSashCursor == null) fHSashCursor = new Cursor(c.getDisplay(), SWT.CURSOR_SIZEWE);
cursor = fHSashCursor;
}
break;
}
if (cursor != null) c.setCursor(cursor);
}
}
public void mouseDown(MouseEvent e) {
Composite parent = fControl.getParent();
Point s = parent.getSize();
Point as = fAncestorLabel.getSize();
Point ys = fLeftLabel.getSize();
Point ms = fRightLabel.getSize();
fWidth1 = ys.x;
fWidth2 = ms.x;
fHeight1 = fLeftLabel.getLocation().y - as.y;
fHeight2 = s.y - (fLeftLabel.getLocation().y + ys.y);
fX = e.x;
fY = e.y;
fIsDown = true;
}
/**
* Builds the SWT controls for the three areas of a compare/merge viewer.
*
* <p>Calls the hooks <code>createControls</code> and <code>createToolItems</code> to let
* subclasses build the specific content areas and to add items to an enclosing toolbar.
*
* <p>This method must only be called in the constructor of subclasses.
*
* @param parent the parent control
* @return the new control
*/
protected final Control buildControl(Composite parent) {
fComposite =
new Composite(parent, fStyles | SWT.LEFT_TO_RIGHT) { // we
// force
// a
// specific
// direction
public boolean setFocus() {
return ContentMergeViewer.this.handleSetFocus();
}
};
fComposite.setData(CompareUI.COMPARE_VIEWER_TITLE, getTitle());
hookControl(fComposite); // hook help & dispose listener
fComposite.setLayout(new ContentMergeViewerLayout());
int style = SWT.SHADOW_OUT;
fAncestorLabel = new CLabel(fComposite, style | Window.getDefaultOrientation());
fLeftLabel = new CLabel(fComposite, style | Window.getDefaultOrientation());
new Resizer(fLeftLabel, VERTICAL);
fDirectionLabel = new CLabel(fComposite, style);
fDirectionLabel.setAlignment(SWT.CENTER);
new Resizer(fDirectionLabel, HORIZONTAL | VERTICAL);
fRightLabel = new CLabel(fComposite, style | Window.getDefaultOrientation());
new Resizer(fRightLabel, VERTICAL);
if (fCenter == null || fCenter.isDisposed()) fCenter = createCenterControl(fComposite);
createControls(fComposite);
fHandlerService =
CompareHandlerService.createFor(
getCompareConfiguration().getContainer(), fComposite.getShell());
initializeToolbars(parent);
return fComposite;
}
private void resize(MouseEvent e) {
int dx = e.x - fX;
int dy = e.y - fY;
int centerWidth = fCenter.getSize().x;
if (fWidth1 + dx > centerWidth && fWidth2 - dx > centerWidth) {
fWidth1 += dx;
fWidth2 -= dx;
if ((fDirection & HORIZONTAL) != 0)
fHSplit = (double) fWidth1 / (double) (fWidth1 + fWidth2);
}
if (fHeight1 + dy > centerWidth && fHeight2 - dy > centerWidth) {
fHeight1 += dy;
fHeight2 -= dy;
if ((fDirection & VERTICAL) != 0)
fVSplit = (double) fHeight1 / (double) (fHeight1 + fHeight2);
}
fComposite.layout(true);
fControl.getDisplay().update();
}