public static final Component getChildAtLine(
Container container, Point point, boolean horizontal) {
if (horizontal) {
for (int i = 0; i < container.getComponentCount(); i++) {
Component component = container.getComponent(i);
if (point.x >= component.getX() && point.x < component.getX() + component.getWidth())
return component;
}
} else {
for (int i = 0; i < container.getComponentCount(); i++) {
Component component = container.getComponent(i);
if (point.y >= component.getY() && point.y < component.getY() + component.getHeight())
return component;
}
}
return null;
}
public static final Component getVisibleChildAt(Container container, Point point) {
for (int i = 0; i < container.getComponentCount(); i++) {
Component component = container.getComponent(i);
if (component.isVisible()
&& component.contains(point.x - component.getX(), point.y - component.getY()))
return component;
}
return null;
}
static Point getLocationInQueryTextArea(Component childComp) {
Point ret = new Point(0, 0);
Component comp = childComp;
while (false == comp instanceof QueryTextArea) {
ret.translate(comp.getX(), comp.getY());
comp = comp.getParent();
}
return ret;
}
/**
* Centers the given component in relation to its owner.
*
* @param component the component to center
* @param owner the parent frame
*/
public static void centerComponent(Component component, Component owner) {
// find the difference in width to see the offsets
int widthDifference = owner.getWidth() - component.getWidth();
int heightDifference = owner.getHeight() - component.getHeight();
// we can divide the differences by 2 and add that to the owner's top left
// and then make that the top left of the component
// to center the frame
int leftOffset = widthDifference / 2;
int topOffset = heightDifference / 2;
// these are the new locations
int left = owner.getX() + leftOffset;
int top = owner.getY() + topOffset;
Utils.changeFrameLocation(component, left, top);
}
private void paintOnComponentUnderViewport(Component component, Graphics g) {
JBViewport viewport = ObjectUtils.tryCast(myOwner, JBViewport.class);
if (viewport == null || viewport.getView() != component || viewport.isPaintingNow()) return;
// We're painting a component which has a viewport as it's ancestor.
// As the viewport paints status text, we'll erase it, so we need to schedule a repaint for the
// viewport with status text's bounds.
// But it causes flicker, so we paint status text over the component first and then schedule the
// viewport repaint.
Rectangle textBoundsInViewport = getTextComponentBound();
int xInOwner = textBoundsInViewport.x - component.getX();
int yInOwner = textBoundsInViewport.y - component.getY();
Rectangle textBoundsInOwner =
new Rectangle(xInOwner, yInOwner, textBoundsInViewport.width, textBoundsInViewport.height);
doPaintStatusText(g, textBoundsInOwner);
viewport.repaint(textBoundsInViewport);
}
