File	Doc	Category	Size	Date	Package
LineBreakMeasurer.java	API Doc	Android 1.5 API	8071	Wed May 06 22:41:54 BST 2009	java.awt.font

LineBreakMeasurer

• java.lang.Object

Fields Summary
private TextMeasurer	tm The tm.
private int	position The position.
int	maxpos The maxpos.

Constructors Summary
public LineBreakMeasurer(AttributedCharacterIterator text, FontRenderContext frc) Instantiates a new LineBreakMeasurer object for the specified text. param text the AttributedCharacterIterator object which contains text with at least one character. param frc the FontRenderContext represented information about graphic device. // ???AWT: this(text, BreakIterator.getLineInstance(), frc);

Methods Summary
public void	deleteChar(java.text.AttributedCharacterIterator newText, int pos) Deletes a character from the specified position of the text, updates this LineBreakMeasurer object. param newText the new text. param pos the position of the character which is deleted. tm.deleteChar(newText, pos); // ???AWT: bi.setText(newText); position = newText.getBeginIndex(); maxpos--;
public int	getPosition() Gets current position of this LineBreakMeasurer. return the current position of this LineBreakMeasurer return position;
public void	insertChar(java.text.AttributedCharacterIterator newText, int pos) Inserts a character at the specified position in the text, updates this LineBreakMeasurer object. param newText the new text. param pos the position of the character which is inserted. tm.insertChar(newText, pos); // ???AWT: bi.setText(newText); position = newText.getBeginIndex(); maxpos++;
public java.awt.font.TextLayout	nextLayout(float wrappingWidth, int offsetLimit, boolean requireNextWord) Returns the next line of text, updates current position in this LineBreakMeasurer. param wrappingWidth the maximum visible line width. param offsetLimit the limit point within the text indicating that no further text should be included on the line; the paragraph break. param requireNextWord if true, null is returned (the entire word at the current position does not fit within the wrapping width); if false, a valid layout is returned that includes at least the character at the current position. return the next TextLayout which begins at the current position and represents the next line of text with width wrappingWidth, null is returned if the entire word at the current position does not fit within the wrapping width. if (position == maxpos) { return null; } int nextPosition = nextOffset(wrappingWidth, offsetLimit, requireNextWord); if (nextPosition == position) { return null; } TextLayout layout = tm.getLayout(position, nextPosition); position = nextPosition; return layout;
public java.awt.font.TextLayout	nextLayout(float wrappingWidth) Returns the next line of text. param wrappingWidth the maximum visible line width. return the next line of text. return nextLayout(wrappingWidth, maxpos, false);
public int	nextOffset(float wrappingWidth) Returns the end position of the next line of text. param wrappingWidth the maximum visible line width. return the end position of the next line of text. return nextOffset(wrappingWidth, maxpos, false);
public int	nextOffset(float wrappingWidth, int offsetLimit, boolean requireNextWord) Returns the end position of the next line of text. param wrappingWidth the maximum visible line width. param offsetLimit the limit point withing the text indicating that no further text should be included on the line; the paragraph break. param requireNextWord if true, the current position is returned if the entire next word does not fit within wrappingWidth; if false, the offset returned is at least one greater than the current position. return the end position of the next line of text. throws IllegalArgumentException if the offsetLimit is less than the current position. if (offsetLimit <= position) { // awt.203=Offset limit should be greater than current position. throw new IllegalArgumentException(Messages.getString("awt.203")); //$NON-NLS-1$ } if (position == maxpos) { return position; } int breakPos = tm.getLineBreakIndex(position, wrappingWidth); int correctedPos = breakPos; // This check is required because bi.preceding(maxpos) throws an // exception /* * ???AWT if (breakPos == maxpos) { correctedPos = maxpos; } else if * (Character.isWhitespace(bi.getText().setIndex(breakPos))) { * correctedPos = bi.following(breakPos); } else { correctedPos = * bi.preceding(breakPos); } */ if (position >= correctedPos) { if (requireNextWord) { correctedPos = position; } else { correctedPos = Math.max(position + 1, breakPos); } } return Math.min(correctedPos, offsetLimit);
public void	setPosition(int pos) Sets the new position of this LineBreakMeasurer. param pos the new position of this LineBreakMeasurer. if (tm.aci.getBeginIndex() > pos || maxpos < pos) { // awt.33=index is out of range throw new IllegalArgumentException(Messages.getString("awt.33")); //$NON-NLS-1$ } position = pos;