Examples with AttributedCharacterIterator java.text.AttributedCharacterIterator used on opensource projects

Example 51 with AttributedCharacterIterator

use of java.text.AttributedCharacterIterator in project poi by apache.

the class DrawTextParagraph method breakText.

/**
     * break text into lines, each representing a line of text that fits in the wrapping width
     *
     * @param graphics The drawing context for computing text-lengths.
     */
protected void breakText(Graphics2D graphics) {
    lines.clear();
    DrawFactory fact = DrawFactory.getInstance(graphics);
    StringBuilder text = new StringBuilder();
    AttributedString at = getAttributedString(graphics, text);
    boolean emptyParagraph = ("".equals(text.toString().trim()));
    AttributedCharacterIterator it = at.getIterator();
    LineBreakMeasurer measurer = new LineBreakMeasurer(it, graphics.getFontRenderContext());
    for (; ; ) {
        int startIndex = measurer.getPosition();
        // add a pixel to compensate rounding errors
        double wrappingWidth = getWrappingWidth(lines.size() == 0, graphics) + 1;
        // shape width can be smaller that the sum of insets (this was proved by a test file)
        if (wrappingWidth < 0) {
            wrappingWidth = 1;
        }
        int nextBreak = text.indexOf("\n", startIndex + 1);
        if (nextBreak == -1) {
            nextBreak = it.getEndIndex();
        }
        TextLayout layout = measurer.nextLayout((float) wrappingWidth, nextBreak, true);
        if (layout == null) {
            // layout can be null if the entire word at the current position
            // does not fit within the wrapping width. Try with requireNextWord=false.
            layout = measurer.nextLayout((float) wrappingWidth, nextBreak, false);
        }
        if (layout == null) {
            // exit if can't break any more
            break;
        }
        int endIndex = measurer.getPosition();
        // skip over new line breaks (we paint 'clear' text runs not starting or ending with \n)
        if (endIndex < it.getEndIndex() && text.charAt(endIndex) == '\n') {
            measurer.setPosition(endIndex + 1);
        }
        TextAlign hAlign = paragraph.getTextAlign();
        if (hAlign == TextAlign.JUSTIFY || hAlign == TextAlign.JUSTIFY_LOW) {
            layout = layout.getJustifiedLayout((float) wrappingWidth);
        }
        AttributedString str = (emptyParagraph) ? // we will not paint empty paragraphs
        null : new AttributedString(it, startIndex, endIndex);
        DrawTextFragment line = fact.getTextFragment(layout, str);
        lines.add(line);
        maxLineHeight = Math.max(maxLineHeight, line.getHeight());
        if (endIndex == it.getEndIndex()) {
            break;
        }
    }
    rawText = text.toString();
}

Example 52 with AttributedCharacterIterator

use of java.text.AttributedCharacterIterator in project chipKIT32-MAX by chipKIT32.

the class InputMethodSupport method inputMethodTextChanged.

/**
   * Handles events from InputMethod.
   * This method judges whether beginning of input or 
   * progress of input or end and call related method.
   * 
   * @param event event from Input Method.
   */
public void inputMethodTextChanged(InputMethodEvent event) {
    AttributedCharacterIterator text = event.getText();
    committed_count = event.getCommittedCharacterCount();
    if (isBeginInputProcess(text, textManager)) {
        textManager.beginCompositionText(text, committed_count);
        caretPositionChanged(event);
        return;
    }
    if (isInputProcess(text)) {
        textManager.processCompositionText(text, committed_count);
        caretPositionChanged(event);
        return;
    }
    textManager.endCompositionText(text, committed_count);
    caretPositionChanged(event);
}