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Diffstat (limited to 'awt/java/awt/font/LineBreakMeasurer.java')
| -rw-r--r-- | awt/java/awt/font/LineBreakMeasurer.java | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/awt/java/awt/font/LineBreakMeasurer.java b/awt/java/awt/font/LineBreakMeasurer.java deleted file mode 100644 index 4800093..0000000 --- a/awt/java/awt/font/LineBreakMeasurer.java +++ /dev/null @@ -1,238 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/* - * @author Oleg V. Khaschansky - * @version $Revision$ - */ - -package java.awt.font; - -import java.text.AttributedCharacterIterator; //???AWT: import java.text.BreakIterator; - -import org.apache.harmony.awt.internal.nls.Messages; - -/** - * The class LineBreakMeasurer provides methods to measure the graphical - * representation of a text in order to determine where to add line breaks so - * the resulting line of text fits its wrapping width. The wrapping width - * defines the visual width of the paragraph. - * - * @since Android 1.0 - */ -public final class LineBreakMeasurer { - - /** - * The tm. - */ - private TextMeasurer tm = null; - - // ???AWT private BreakIterator bi = null; - /** - * The position. - */ - private int position = 0; - - /** - * The maxpos. - */ - int maxpos = 0; - - /** - * 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. - */ - public LineBreakMeasurer(AttributedCharacterIterator text, FontRenderContext frc) { - // ???AWT: this(text, BreakIterator.getLineInstance(), frc); - } - - /* - * ???AWT public LineBreakMeasurer( AttributedCharacterIterator text, - * BreakIterator bi, FontRenderContext frc ) { tm = new TextMeasurer(text, - * frc); this.bi = bi; this.bi.setText(text); position = - * text.getBeginIndex(); maxpos = tm.aci.getEndIndex(); } - */ - - /** - * 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. - */ - public void deleteChar(AttributedCharacterIterator newText, int pos) { - tm.deleteChar(newText, pos); - // ???AWT: bi.setText(newText); - - position = newText.getBeginIndex(); - - maxpos--; - } - - /** - * Gets current position of this LineBreakMeasurer. - * - * @return the current position of this LineBreakMeasurer - */ - public int getPosition() { - return position; - } - - /** - * 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. - */ - public void insertChar(AttributedCharacterIterator newText, int pos) { - tm.insertChar(newText, pos); - // ???AWT: bi.setText(newText); - - position = newText.getBeginIndex(); - - maxpos++; - } - - /** - * 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. - */ - public TextLayout nextLayout(float wrappingWidth, int offsetLimit, boolean requireNextWord) { - 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; - } - - /** - * Returns the next line of text. - * - * @param wrappingWidth - * the maximum visible line width. - * @return the next line of text. - */ - public TextLayout nextLayout(float wrappingWidth) { - return nextLayout(wrappingWidth, maxpos, false); - } - - /** - * 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. - */ - public int nextOffset(float wrappingWidth) { - return nextOffset(wrappingWidth, maxpos, false); - } - - /** - * 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. - */ - public int nextOffset(float wrappingWidth, int offsetLimit, boolean requireNextWord) { - 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); - } - - /** - * Sets the new position of this LineBreakMeasurer. - * - * @param pos - * the new position of this LineBreakMeasurer. - */ - public void setPosition(int pos) { - 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; - } -} |