/**
* Returns a rectangle describing the receiver's size and location relative to its parent.
*
* @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>
*
* @since 1.3
*/
public Rectangle getBounds() {
checkWidget();
Rectangle result = new Rectangle(0, 0, 0, 0);
int index = parent.indexOf(this);
if (index != -1) {
int selectionIndex = parent.getSelectionIndex();
boolean selected = index == selectionIndex;
Rectangle padding = parent.getItemPadding(selected);
String text = getText();
if (text != null) {
Point extent = Graphics.stringExtent(parent.getFont(), text);
result.width = extent.x;
result.height = extent.y;
}
Image image = getImage();
if (image != null) {
Rectangle imageSize = image.getBounds();
result.width += imageSize.width + IMAGE_TEXT_SPACING;
result.height = Math.max(result.height, imageSize.height);
}
result.width += 2 * ITEM_BORDER + padding.width;
result.height += ITEM_BORDER + padding.height;
if (selected) {
result.height += SELECTED_ITEM_BORDER;
}
if (selectionIndex != -1) {
if (index + 1 == selectionIndex || index - 1 == selectionIndex) {
result.width -= ITEM_BORDER;
}
}
if (isBarTop()) {
if (index != selectionIndex) {
result.y += SELECTED_ITEM_BORDER;
}
} else {
result.y = parent.getBounds().height - 2 * parent.getBorderWidth() - result.height;
if (index != selectionIndex) {
result.y -= SELECTED_ITEM_BORDER;
}
}
if (index > 0) {
TabItem leftItem = parent.getItem(index - 1);
Rectangle leftItemBounds = leftItem.getBounds();
result.x = leftItemBounds.x + leftItemBounds.width + TABS_SPACING;
if (index == selectionIndex || index - 1 == selectionIndex) {
result.x -= TABS_SPACING;
}
}
}
return result;
}
public void positionWindow(boolean resetToDefault) {
String mapWindow;
mapShellBounds = mapShell.getBounds();
mapWindow = prefs.get(RadarConsts.PREF_KEY_MAP_WINDOW, "");
if (mapWindow.equals("") || resetToDefault) {
Rectangle dispBounds, tableBounds;
dispBounds = ((Display.getCurrent()).getPrimaryMonitor()).getClientArea();
tableBounds = display.getShells()[1].getBounds();
mapShellBounds.width = dispBounds.width - tableBounds.width;
mapShellBounds.height = dispBounds.height;
mapShellBounds.x = dispBounds.x + tableBounds.width;
mapShellBounds.y = dispBounds.y;
} else {
String[] tokens = mapWindow.split(",");
mapShellBounds =
new Rectangle(
new Integer(tokens[0]), // X value
new Integer(tokens[1]), // Y value
new Integer(tokens[2]), // Width
new Integer(tokens[3]) // Height
);
}
mapShell.setBounds(mapShellBounds);
}
private Rectangle getDrawBounds(TableCellSWT cell) {
Rectangle bounds = cell.getBounds();
bounds.height -= 12;
bounds.y += 6;
bounds.x += 4;
bounds.width -= 4;
return bounds;
}
void moveRectangles(int xChange, int yChange) {
if (bounds == null) return;
if (xChange < 0 && ((style & SWT.LEFT) == 0)) xChange = 0;
if (xChange > 0 && ((style & SWT.RIGHT) == 0)) xChange = 0;
if (yChange < 0 && ((style & SWT.UP) == 0)) yChange = 0;
if (yChange > 0 && ((style & SWT.DOWN) == 0)) yChange = 0;
if (xChange == 0 && yChange == 0) return;
bounds.x += xChange;
bounds.y += yChange;
for (int i = 0; i < rectangles.length; i++) {
rectangles[i].x += xChange;
rectangles[i].y += yChange;
}
}
void resizeControl() {
if (control != null && !control.isDisposed()) {
/*
* Set the size and location of the control
* separately to minimize flashing in the
* case where the control does not resize
* to the size that was requested. This
* case can occur when the control is a
* combo box.
*/
Rectangle itemRect = getBounds();
control.setSize(itemRect.width, itemRect.height);
Rectangle rect = control.getBounds();
rect.x = itemRect.x + (itemRect.width - rect.width) / 2;
rect.y = itemRect.y + (itemRect.height - rect.height) / 2;
control.setLocation(rect.x, rect.y);
}
}
/**
* Returns an axis-aligned bounding box of this polygon.
*
* <p>Note the returned Rectangle is cached in this polygon, and will be reused if this Polygon is
* changed.
*
* @return this polygon's bounding box {@link Rectangle}
*/
public Rectangle getBoundingRectangle() {
float[] vertices = getTransformedVertices();
float minX = vertices[0];
float minY = vertices[1];
float maxX = vertices[0];
float maxY = vertices[1];
final int numFloats = vertices.length;
for (int i = 2; i < numFloats; i += 2) {
minX = minX > vertices[i] ? vertices[i] : minX;
minY = minY > vertices[i + 1] ? vertices[i + 1] : minY;
maxX = maxX < vertices[i] ? vertices[i] : maxX;
maxY = maxY < vertices[i + 1] ? vertices[i + 1] : maxY;
}
if (bounds == null) bounds = new Rectangle();
bounds.x = minX;
bounds.y = minY;
bounds.width = maxX - minX;
bounds.height = maxY - minY;
return bounds;
}
/**
* Adjusts the allocation given to the view to be a suitable allocation for a text field. If the
* view has been allocated more than the preferred span vertically, the allocation is changed to
* be centered vertically. Horizontally the view is adjusted according to the horizontal alignment
* property set on the associated JTextField (if that is the type of the hosting component).
*
* @param a the allocation given to the view, which may need to be adjusted.
* @return the allocation that the superclass should use.
*/
protected Shape adjustAllocation(Shape a) {
if (a != null) {
Rectangle bounds = a.getBounds();
int vspan = (int) getPreferredSpan(Y_AXIS);
int hspan = (int) getPreferredSpan(X_AXIS);
if (bounds.height != vspan) {
int slop = bounds.height - vspan;
bounds.y += slop / 2;
bounds.height -= slop;
}
// horizontal adjustments
Component c = getContainer();
if (c instanceof JTextField) {
JTextField field = (JTextField) c;
BoundedRangeModel vis = field.getHorizontalVisibility();
int max = Math.max(hspan, bounds.width);
int value = vis.getValue();
int extent = Math.min(max, bounds.width - 1);
if ((value + extent) > max) {
value = max - extent;
}
vis.setRangeProperties(value, extent, vis.getMinimum(), max, false);
if (hspan < bounds.width) {
// horizontally align the interior
int slop = bounds.width - 1 - hspan;
int align = ((JTextField) c).getHorizontalAlignment();
if (Utilities.isLeftToRight(c)) {
if (align == LEADING) {
align = LEFT;
} else if (align == TRAILING) {
align = RIGHT;
}
} else {
if (align == LEADING) {
align = RIGHT;
} else if (align == TRAILING) {
align = LEFT;
}
}
switch (align) {
case SwingConstants.CENTER:
bounds.x += slop / 2;
bounds.width -= slop;
break;
case SwingConstants.RIGHT:
bounds.x += slop;
bounds.width -= slop;
break;
}
} else {
// adjust the allocation to match the bounded range.
bounds.width = hspan;
bounds.x -= vis.getValue();
}
}
return bounds;
}
return null;
}
/*
* Returns true if the pointer's orientation was initialized in some dimension,
* and false otherwise.
*/
boolean resizeRectangles(int xChange, int yChange) {
if (bounds == null) return false;
boolean orientationInit = false;
/*
* If the cursor orientation has not been set in the orientation of
* this change then try to set it here.
*/
if (xChange < 0 && ((style & SWT.LEFT) != 0) && ((cursorOrientation & SWT.RIGHT) == 0)) {
if ((cursorOrientation & SWT.LEFT) == 0) {
cursorOrientation |= SWT.LEFT;
orientationInit = true;
}
}
if (xChange > 0 && ((style & SWT.RIGHT) != 0) && ((cursorOrientation & SWT.LEFT) == 0)) {
if ((cursorOrientation & SWT.RIGHT) == 0) {
cursorOrientation |= SWT.RIGHT;
orientationInit = true;
}
}
if (yChange < 0 && ((style & SWT.UP) != 0) && ((cursorOrientation & SWT.DOWN) == 0)) {
if ((cursorOrientation & SWT.UP) == 0) {
cursorOrientation |= SWT.UP;
orientationInit = true;
}
}
if (yChange > 0 && ((style & SWT.DOWN) != 0) && ((cursorOrientation & SWT.UP) == 0)) {
if ((cursorOrientation & SWT.DOWN) == 0) {
cursorOrientation |= SWT.DOWN;
orientationInit = true;
}
}
/*
* If the bounds will flip about the x or y axis then apply the adjustment
* up to the axis (ie.- where bounds width/height becomes 0), change the
* cursor's orientation accordingly, and flip each Rectangle's origin (only
* necessary for > 1 Rectangles)
*/
if ((cursorOrientation & SWT.LEFT) != 0) {
if (xChange > bounds.width) {
if ((style & SWT.RIGHT) == 0) return orientationInit;
cursorOrientation |= SWT.RIGHT;
cursorOrientation &= ~SWT.LEFT;
bounds.x += bounds.width;
xChange -= bounds.width;
bounds.width = 0;
if (proportions.length > 1) {
for (int i = 0; i < proportions.length; i++) {
Rectangle proportion = proportions[i];
proportion.x = 100 - proportion.x - proportion.width;
}
}
}
} else if ((cursorOrientation & SWT.RIGHT) != 0) {
if (bounds.width < -xChange) {
if ((style & SWT.LEFT) == 0) return orientationInit;
cursorOrientation |= SWT.LEFT;
cursorOrientation &= ~SWT.RIGHT;
xChange += bounds.width;
bounds.width = 0;
if (proportions.length > 1) {
for (int i = 0; i < proportions.length; i++) {
Rectangle proportion = proportions[i];
proportion.x = 100 - proportion.x - proportion.width;
}
}
}
}
if ((cursorOrientation & SWT.UP) != 0) {
if (yChange > bounds.height) {
if ((style & SWT.DOWN) == 0) return orientationInit;
cursorOrientation |= SWT.DOWN;
cursorOrientation &= ~SWT.UP;
bounds.y += bounds.height;
yChange -= bounds.height;
bounds.height = 0;
if (proportions.length > 1) {
for (int i = 0; i < proportions.length; i++) {
Rectangle proportion = proportions[i];
proportion.y = 100 - proportion.y - proportion.height;
}
}
}
} else if ((cursorOrientation & SWT.DOWN) != 0) {
if (bounds.height < -yChange) {
if ((style & SWT.UP) == 0) return orientationInit;
cursorOrientation |= SWT.UP;
cursorOrientation &= ~SWT.DOWN;
yChange += bounds.height;
bounds.height = 0;
if (proportions.length > 1) {
for (int i = 0; i < proportions.length; i++) {
Rectangle proportion = proportions[i];
proportion.y = 100 - proportion.y - proportion.height;
}
}
}
}
// apply the bounds adjustment
if ((cursorOrientation & SWT.LEFT) != 0) {
bounds.x += xChange;
bounds.width -= xChange;
} else if ((cursorOrientation & SWT.RIGHT) != 0) {
bounds.width += xChange;
}
if ((cursorOrientation & SWT.UP) != 0) {
bounds.y += yChange;
bounds.height -= yChange;
} else if ((cursorOrientation & SWT.DOWN) != 0) {
bounds.height += yChange;
}
Rectangle[] newRects = new Rectangle[rectangles.length];
for (int i = 0; i < rectangles.length; i++) {
Rectangle proportion = proportions[i];
newRects[i] =
new Rectangle(
proportion.x * bounds.width / 100 + bounds.x,
proportion.y * bounds.height / 100 + bounds.y,
proportion.width * bounds.width / 100,
proportion.height * bounds.height / 100);
}
rectangles = newRects;
return orientationInit;
}
public static void main(String[] args) {
final Display display = new Display();
final Image image = display.getSystemImage(SWT.ICON_INFORMATION);
final Shell shell = new Shell(display, SWT.NO_TRIM);
Region region = new Region();
final ImageData imageData = image.getImageData();
if (imageData.alphaData != null) {
Rectangle pixel = new Rectangle(0, 0, 1, 1);
for (int y = 0; y < imageData.height; y++) {
for (int x = 0; x < imageData.width; x++) {
if (imageData.getAlpha(x, y) == 255) {
pixel.x = imageData.x + x;
pixel.y = imageData.y + y;
region.add(pixel);
}
}
}
} else {
ImageData mask = imageData.getTransparencyMask();
Rectangle pixel = new Rectangle(0, 0, 1, 1);
for (int y = 0; y < mask.height; y++) {
for (int x = 0; x < mask.width; x++) {
if (mask.getPixel(x, y) != 0) {
pixel.x = imageData.x + x;
pixel.y = imageData.y + y;
region.add(pixel);
}
}
}
}
shell.setRegion(region);
Listener l =
new Listener() {
/** The x/y of the MouseDown, relative to top-left of the shell. */
int startX, startY;
@Override
public void handleEvent(Event e) {
if (e.type == SWT.KeyDown && e.character == SWT.ESC) {
shell.dispose();
}
if (e.type == SWT.MouseDown && e.button == 1) {
Point p = shell.toDisplay(e.x, e.y);
Point loc = shell.getLocation();
startX = p.x - loc.x;
startY = p.y - loc.y;
}
if (e.type == SWT.MouseMove && (e.stateMask & SWT.BUTTON1) != 0) {
Point p = shell.toDisplay(e.x, e.y);
p.x -= startX;
p.y -= startY;
shell.setLocation(p);
}
if (e.type == SWT.Paint) {
e.gc.drawImage(image, imageData.x, imageData.y);
}
}
};
shell.addListener(SWT.KeyDown, l);
shell.addListener(SWT.MouseDown, l);
shell.addListener(SWT.MouseMove, l);
shell.addListener(SWT.Paint, l);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
region.dispose();
image.dispose();
display.dispose();
}