Java ContentDisplay.CENTER属性代码示例

/**
 * Computes the preferred width of the given container based on the content
 * display.
 * <p>
 * This is a basically just an intermediate function which should have been
 * in a base class. But this is used with an already existing class
 * hierarchy, so it's not possible to directly inject it.
 *
 * @param pContainer the container.
 * @param pContentAlignable the content alignable.
 * @param pLayoutForwarding the forwarded layout.
 * @param pContentSelector the content selector.
 * @return the double.
 */
public static double computeContentPreferredWidth(Region pContainer, IFXContentAlignable pContentAlignable, IFXLayoutForwarding pLayoutForwarding, String pContentSelector)
{
	String styleClassName = pContainer.getStyleClass().get(0);
	
	if (pContentAlignable.getContentDisplay() == ContentDisplay.TOP || pContentAlignable.getContentDisplay() == ContentDisplay.BOTTOM
			|| pContentAlignable.getContentDisplay() == ContentDisplay.CENTER)
	{
		Node imageView = pContainer.lookup("." + styleClassName + " *.image-view");
		
		if (imageView == null)
		{
			Node text = pContainer.lookup("." + styleClassName + " *.text");
			Node content = pContainer.lookup("." + styleClassName + " *." + pContentSelector);
			
			return Math.max(text.prefWidth(-1), content.prefWidth(-1));
		}
	}
	
	return pLayoutForwarding.calculatePreferredWidth(-1);
}
 

/**
 * Aligns the given node according to the given settings relative to the
 * anchor node.
 * 
 * @param pAnchorNode the node that is used for alignment.
 * @param pNodeToAlign the node that is going to be aligned.
 * @param pContentDisplay the content display to use.
 * @param pHorizontalAlignment the horizontal alignment to use.
 * @param pVerticalAlignment the vertical alignment to use.
 */
public static void alignRelativeToContent(Node pAnchorNode, Node pNodeToAlign, ContentDisplay pContentDisplay, HPos pHorizontalAlignment, VPos pVerticalAlignment)
{
	if (pAnchorNode == null || pNodeToAlign == null)
	{
		return;
	}
	
	if (pContentDisplay == ContentDisplay.CENTER || pContentDisplay == ContentDisplay.BOTTOM || pContentDisplay == ContentDisplay.TOP)
	{
		if (pHorizontalAlignment == HPos.LEFT)
		{
			pNodeToAlign.setLayoutX(pAnchorNode.getLayoutX());
		}
		else if (pHorizontalAlignment == HPos.RIGHT)
		{
			pNodeToAlign.setLayoutX(pAnchorNode.getLayoutX() + pAnchorNode.prefWidth(-1) - pNodeToAlign.getLayoutBounds().getWidth());
		}
	}
	if (pContentDisplay == ContentDisplay.CENTER || pContentDisplay == ContentDisplay.LEFT || pContentDisplay == ContentDisplay.RIGHT)
	{
		if (pVerticalAlignment == VPos.TOP)
		{
			pNodeToAlign.setLayoutY(pAnchorNode.getLayoutY() - pNodeToAlign.getLayoutBounds().getMinY());
		}
		else if (pVerticalAlignment == VPos.BOTTOM)
		{
			pNodeToAlign.setLayoutY(pAnchorNode.getLayoutY() - pNodeToAlign.getLayoutBounds().getMinY() + pAnchorNode.prefHeight(-1)
					- pNodeToAlign.getLayoutBounds().getHeight());
		}
	}
}
 

/**
 * 
 * Computes the preferred height of the given container based on the content
 * display.
 * <p>
 * This is a basically just an intermediate function which should have been
 * in a base class. But this is used with an already existing class
 * hierarchy, so it's not possible to directly inject it.
 * 
 * @param pContainer the container.
 * @param pContentAlignable the content alignable.
 * @param pLayoutForwarding the forwarded layout.
 * @param pContentSelector the content selector.
 * @return the double.
 */
public static double computeContentPreferredHeight(Region pContainer, IFXContentAlignable pContentAlignable, IFXLayoutForwarding pLayoutForwarding, String pContentSelector)
{
	String styleClassName = pContainer.getStyleClass().get(0);
	
	if (pContentAlignable.getContentDisplay() == ContentDisplay.TOP || pContentAlignable.getContentDisplay() == ContentDisplay.BOTTOM
			|| pContentAlignable.getContentDisplay() == ContentDisplay.CENTER)
	{
		Node imageView = pContainer.lookup("." + styleClassName + " *.image-view");
		
		if (imageView == null)
		{
			Node text = pContainer.lookup("." + styleClassName + " *.text");
			Node content = pContainer.lookup("." + styleClassName + " *." + pContentSelector);
			
			if (pContentAlignable.getContentDisplay() == ContentDisplay.CENTER)
			{
				return Math.max(text.prefHeight(-1), content.prefHeight(-1));
			}
			else
			{
				return text.prefHeight(-1) + content.prefHeight(-1);
			}
		}
	}
	
	return pLayoutForwarding.calculatePreferredHeight(-1);
}
 

/**
 * Converts the given alignment value to {@link ContentDisplay}.
 * 
 * @param pAlignment the alignment.
 * @return the appropriate {@link ContentDisplay}.
 */
public static ContentDisplay alignmentToContentDisplay(int pAlignment)
{
	switch (pAlignment)
	{
		case IAlignmentConstants.ALIGN_BOTTOM:
			return ContentDisplay.BOTTOM;
			
		case IAlignmentConstants.ALIGN_CENTER:
			return ContentDisplay.CENTER;
			
		case IAlignmentConstants.ALIGN_DEFAULT:
			return ContentDisplay.LEFT;
			
		case IAlignmentConstants.ALIGN_STRETCH:
			return ContentDisplay.CENTER;
			
		case IAlignmentConstants.ALIGN_TOP:
			return ContentDisplay.TOP;
			
		default:
			// Ignore...
			
	}
	
	switch (pAlignment)
	{
		case IAlignmentConstants.ALIGN_CENTER:
			return ContentDisplay.CENTER;
			
		case IAlignmentConstants.ALIGN_DEFAULT:
			return ContentDisplay.LEFT;
			
		case IAlignmentConstants.ALIGN_LEFT:
			return ContentDisplay.LEFT;
			
		case IAlignmentConstants.ALIGN_RIGHT:
			return ContentDisplay.RIGHT;
			
		case IAlignmentConstants.ALIGN_STRETCH:
			return ContentDisplay.CENTER;
			
		default:
			// Ignore...
			
	}
	
	return ContentDisplay.LEFT;
}
 

/**
 * Layouts a text node relative to a content node or an image view node.
 * <p>
 * This is a basically just an intermediate function which should have been
 * in a base class. But this is used with an already existing class
 * hierarchy, so it's not possible to directly inject it.
 *
 * @param pContainer the container.
 * @param pContentAlignable the content alignable.
 * @param pLayoutForwarding the forwarded layout.
 * @param pContentSelector the content selector.
 */
public static void layoutContent(Region pContainer, IFXContentAlignable pContentAlignable, IFXLayoutForwarding pLayoutForwarding, String pContentSelector)
{
	String styleClassName = pContainer.getStyleClass().get(0);
	
	Node text = NodeUtil.lookup(pContainer, "." + styleClassName + " *.text");
	Node imageView = NodeUtil.lookup(pContainer, "." + styleClassName + " *.image-view");
	
	if (imageView != null)
	{
		pLayoutForwarding.doLayout();
		
		LayoutUtil.alignRelativeToContent(imageView, text, pContentAlignable.getContentDisplay(), pContentAlignable.getRelativeHorizontalTextAlignment(),
				pContentAlignable.getRelativeVerticalTextAlignment());
	}
	else if (text != null && pContentSelector != null)
	{
		Node content = pContainer.lookup("." + styleClassName + " *." + pContentSelector);
		
		double width = computeContentPreferredWidth(pContainer, pContentAlignable, pLayoutForwarding, pContentSelector);
		double height = computeContentPreferredHeight(pContainer, pContentAlignable, pLayoutForwarding, pContentSelector);
		
		double modY = (pContainer.getHeight() - height) / 2;
		
		content.autosize();
		text.autosize();
		
		if (pContentAlignable.getContentDisplay() == ContentDisplay.TOP)
		{
			content.relocate((width - content.prefWidth(-1)) / 2, modY);
			text.relocate((width - text.prefWidth(-1)) / 2, content.prefHeight(-1) + modY);
		}
		else if (pContentAlignable.getContentDisplay() == ContentDisplay.BOTTOM)
		{
			content.relocate((width - content.prefWidth(-1)) / 2, text.prefHeight(-1) + modY);
			text.relocate((width - text.prefWidth(-1)) / 2, modY);
		}
		else if (pContentAlignable.getContentDisplay() == ContentDisplay.CENTER)
		{
			content.relocate((width - content.prefWidth(-1)) / 2, (height - content.prefHeight(-1)) / 2 + modY);
			text.relocate((width - text.prefWidth(-1)) / 2, (height - text.prefHeight(-1)) / 2 + modY);
		}
		else if (pContentAlignable.getContentDisplay() == ContentDisplay.RIGHT)
		{
			content.relocate(width - content.prefWidth(-1), modY);
			text.relocate(0, modY);
		}
		else
		{
			pLayoutForwarding.doLayout();
		}
		
		LayoutUtil.alignRelativeToContent(content, text, pContentAlignable.getContentDisplay(), pContentAlignable.getRelativeHorizontalTextAlignment(),
				pContentAlignable.getRelativeVerticalTextAlignment());
	}
	else
	{
		pLayoutForwarding.doLayout();
	}
}