void computeSize(Control control, int wHint, int hHint, boolean flushCache) {
if (cacheWidth != -1 && cacheHeight != -1) return;
if (wHint == this.widthHint && hHint == this.heightHint) {
if (defaultWidth == -1
|| defaultHeight == -1
|| wHint != defaultWhint
|| hHint != defaultHhint) {
Point size = control.computeSize(wHint, hHint, flushCache);
defaultWhint = wHint;
defaultHhint = hHint;
defaultWidth = size.x;
defaultHeight = size.y;
}
cacheWidth = defaultWidth;
cacheHeight = defaultHeight;
return;
}
if (currentWidth == -1
|| currentHeight == -1
|| wHint != currentWhint
|| hHint != currentHhint) {
Point size = control.computeSize(wHint, hHint, flushCache);
currentWhint = wHint;
currentHhint = hHint;
currentWidth = size.x;
currentHeight = size.y;
}
cacheWidth = currentWidth;
cacheHeight = currentHeight;
}
/* (non-Javadoc)
* @see org.eclipse.swt.widgets.Layout#computeSize(org.eclipse.swt.widgets.Composite, int, int, boolean)
*/
@Override
protected Point computeSize(Composite composite, int whint, int hhint, boolean flushCache) {
int minX = Integer.MAX_VALUE;
int minY = Integer.MAX_VALUE;
int maxX = Integer.MIN_VALUE;
int maxY = Integer.MIN_VALUE;
for (Control kid : composite.getChildren()) {
Point kidSize = kid.computeSize(-1, -1);
Point kidOffs = kid.getLocation();
if (kidOffs.x < minX) minX = kidOffs.x;
if (kidOffs.y < minY) minY = kidOffs.y;
if (kidOffs.x + kidSize.x > maxX) maxX = kidOffs.x + kidSize.x;
if (kidOffs.y + kidSize.y > maxY) maxY = kidOffs.y + kidSize.y;
}
if (whint > 0) {
if (whint + minX > maxX) maxX = whint + minX;
}
if (hhint > 0) {
if (hhint + minY > maxY) maxY = hhint + minY;
}
return new Point(maxX - minX, maxY - minY);
}
private void turnToPage(SelectionEvent event) {
final TabItem item = (TabItem) event.item;
TabFolder folder = item.getParent();
SearchPageDescriptor descriptor =
(SearchPageDescriptor) item.getData("descriptor"); // $NON-NLS-1$
if (item.getControl() == null) {
item.setControl(createPageControl(folder, descriptor));
}
Control oldControl = folder.getItem(fCurrentIndex).getControl();
Point oldSize = oldControl.getSize();
Control newControl = item.getControl();
Point newSize = newControl.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
resizeDialogIfNeeded(oldSize, newSize);
ISearchPage oldPage = fCurrentPage;
if (oldPage != null) {
oldPage.setVisible(false);
}
fCurrentPage = descriptor.getPage();
fDialogSettings.put(STORE_PREVIOUS_PAGE, descriptor.getId());
fCurrentIndex = folder.getSelectionIndex();
setPerformActionEnabled(fCurrentPage != null);
if (fCurrentPage != null) {
fCurrentPage.setVisible(true);
Control pageControl = fCurrentPage.getControl();
if (pageControl instanceof Composite) ((Composite) pageControl).layout(false, true);
}
fReplaceButton.setVisible(fCurrentPage instanceof IReplacePage);
notifyPageChanged();
}
protected Point getObjectSize(Hashtable resourceTable, int wHint) {
Control control = getControl(resourceTable);
if (control == null) return new Point(0, 0);
int realWhint = FormUtil.getWidthHint(wHint, control);
Point size = control.computeSize(realWhint, SWT.DEFAULT);
if (realWhint != SWT.DEFAULT && fill) size.x = Math.max(size.x, realWhint);
if (width != SWT.DEFAULT) size.x = width;
if (height != SWT.DEFAULT) size.y = height;
return size;
}
/**
* Computes the ideal render widths of non-{@link ChatLine}s and returns the maximum.
*
* @return the maximum ideal render width of all non-{@link ChatLine}s
*/
protected int computeMaxNonChatLineWidth() {
int maxNonChatLineWidth = 0;
for (Control chatItem : getChatItems()) {
if (!(chatItem instanceof ChatLine)) {
int currentNonChatLineWidth = chatItem.computeSize(SWT.DEFAULT, SWT.DEFAULT).x;
maxNonChatLineWidth = Math.max(currentNonChatLineWidth, maxNonChatLineWidth);
}
}
return maxNonChatLineWidth;
}
private void setFont(Composite composite, Font font) {
for (Control control : composite.getChildren()) {
if (control instanceof Composite) {
setFont((Composite) control, font);
} else {
control.setFont(font);
control.setSize(control.computeSize(SWT.DEFAULT, SWT.DEFAULT));
}
}
}
// Debugging utilities for widget trees.
public static void check(Control control) {
String name = control.getClass().getSimpleName();
if (control.isDisposed()) {
System.err.println(name + " disposed!");
return;
}
if (control instanceof Composite) {
((Composite) control).layout(true);
}
control.computeSize(SWT.DEFAULT, SWT.DEFAULT);
Point sz = control.getSize();
if (sz.x == 0 || sz.y == 0) System.err.println(name + " zero size!");
}
/**
* Get an Image of the page. The Image is build from the Control.
*
* @param The IPage for which an Image is requested.
* @return The Image of the page, or null if no Image can be built.
*/
public static Image getPageImage(IPage page) {
Rectangle size;
Control control = page.getControl();
size = control.getBounds();
if (size.width == 0 && size.height == 0) {
Point pt = control.computeSize(SWT.DEFAULT, SWT.DEFAULT);
size = new Rectangle(0, 0, pt.x, pt.y);
}
Image image = new Image(control.getDisplay(), size);
GC gc = new GC(image);
boolean success = control.print(gc);
gc.dispose();
if (!success) {
image.dispose();
return null;
}
return image;
}
/**
* Evaluates each of the controls and determines the largest width. Then sets each control with
* the largest width. Each control must have a GridData as its layout data
*
* @param controls
*/
public static void resizeControlWidthInGrid(Collection<Control> controls) {
int largestWidth = SWT.DEFAULT;
List<GridData> gridDatas = new ArrayList<GridData>();
for (Control control : controls) {
Object layoutData = control.getLayoutData();
if (layoutData instanceof GridData) {
GridData gridData = (GridData) layoutData;
gridDatas.add(gridData);
if (gridData.widthHint > largestWidth) {
largestWidth = gridData.widthHint;
} else {
int preferredX = control.computeSize(SWT.DEFAULT, SWT.DEFAULT).x;
if (preferredX > largestWidth) {
largestWidth = preferredX;
}
}
}
}
for (GridData gridData : gridDatas) {
gridData.widthHint = largestWidth;
}
}
protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) {
CTabFolder folder = (CTabFolder) composite;
CTabItem[] items = folder.items;
CTabFolderRenderer renderer = folder.renderer;
// preferred width of tab area to show all tabs
int tabW = 0;
int selectedIndex = folder.selectedIndex;
if (selectedIndex == -1) selectedIndex = 0;
GC gc = new GC(folder);
for (int i = 0; i < items.length; i++) {
if (folder.single) {
tabW =
Math.max(tabW, renderer.computeSize(i, SWT.SELECTED, gc, SWT.DEFAULT, SWT.DEFAULT).x);
} else {
int state = 0;
if (i == selectedIndex) state |= SWT.SELECTED;
tabW += renderer.computeSize(i, state, gc, SWT.DEFAULT, SWT.DEFAULT).x;
}
}
tabW += 3;
if (folder.showMax)
tabW +=
renderer.computeSize(
CTabFolderRenderer.PART_MAX_BUTTON, SWT.NONE, gc, SWT.DEFAULT, SWT.DEFAULT)
.x;
if (folder.showMin)
tabW +=
renderer.computeSize(
CTabFolderRenderer.PART_MIN_BUTTON, SWT.NONE, gc, SWT.DEFAULT, SWT.DEFAULT)
.x;
if (folder.single)
tabW +=
renderer.computeSize(
CTabFolderRenderer.PART_CHEVRON_BUTTON, SWT.NONE, gc, SWT.DEFAULT, SWT.DEFAULT)
.x;
if (folder.topRight != null) {
Point pt = folder.topRight.computeSize(SWT.DEFAULT, folder.tabHeight, flushCache);
tabW += 3 + pt.x;
}
gc.dispose();
int controlW = 0;
int controlH = 0;
// preferred size of controls in tab items
for (int i = 0; i < items.length; i++) {
Control control = items[i].getControl();
if (control != null && !control.isDisposed()) {
Point size = control.computeSize(wHint, hHint, flushCache);
controlW = Math.max(controlW, size.x);
controlH = Math.max(controlH, size.y);
}
}
int minWidth = Math.max(tabW, controlW);
int minHeight = (folder.minimized) ? 0 : controlH;
if (minWidth == 0) minWidth = CTabFolder.DEFAULT_WIDTH;
if (minHeight == 0) minHeight = CTabFolder.DEFAULT_HEIGHT;
if (wHint != SWT.DEFAULT) minWidth = wHint;
if (hHint != SWT.DEFAULT) minHeight = hHint;
return new Point(minWidth, minHeight);
}
protected Point getSize(Control control, boolean flushCache) {
return control.computeSize(SWT.DEFAULT, SWT.DEFAULT, flushCache);
}
/**
* Calculates and sets the size of the given cool item.
*
* @param item item of cool bar
*/
private void calcSize(final CoolItem item) {
final Control control = item.getControl();
Point pt = control.computeSize(SWT.DEFAULT, SWT.DEFAULT);
pt = item.computeSize(pt.x, pt.y);
item.setSize(pt);
}
public Dimension getPreferredSize(int wHint, int hHint) {
Point p = control.computeSize(wHint, hHint);
return new Dimension(p.x, p.y);
}
public static void resize(Control ctrl) {
Point ns = ctrl.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
Point cs = ctrl.getSize();
if (!cs.equals(ns)) ctrl.setSize(ns);
}
/**
* Computes the width required by control.
*
* @param control The control to compute width
* @return int The width required
*/
protected int computeWidth(final Control control) {
return control.computeSize(100, 20, true).x;
}