Java Swing Font getMultiLineTextForBBox(JComponent comp, double bboxWth, String txt, Font font)

Description

get Multi Line Text For B Box

License

Apache License

Declaration

public static Vector<String> getMultiLineTextForBBox(JComponent comp, double bboxWth, String txt, Font font)

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.awt.Font;
import java.awt.Graphics2D;

import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextAttribute;

import java.text.AttributedCharacterIterator;
import java.text.AttributedString;

import java.util.Hashtable;

import java.util.Vector;

import javax.swing.JComponent;

public class Main {
    public static Vector<String> getMultiLineTextForBBox(JComponent comp, double bboxWth, String txt, Font font) {
        int startPos = 0, currPos = 0;
        String origText = txt;/*  w  ww .  j a v a2s  .  c o  m*/
        Graphics2D g2d = (Graphics2D) comp.getGraphics();
        Hashtable<TextAttribute, Object> fontAttrib = new Hashtable<TextAttribute, Object>();
        fontAttrib.put(TextAttribute.FONT, font);

        Vector<String> multiLine = new Vector<String>();
        while (true) {
            currPos = getText4BBox(g2d, txt, startPos, bboxWth, fontAttrib, true);
            System.out.println("Start Pos: " + startPos + " :Curr Pos: " + currPos);
            String newText = origText.substring(startPos, currPos);
            multiLine.addElement(newText);
            if (currPos == origText.length())
                break;
            startPos = currPos;
            if (origText.charAt(startPos) == '\n')
                startPos = startPos + 1;
        }
        return multiLine;
    }

    public static int getText4BBox(Graphics2D g2d, String text, int startPos, double width, Hashtable fontAttrib,
            Boolean isParaSelection) {

        AttributedString textString = new AttributedString(text, fontAttrib);
        AttributedCharacterIterator charIter = textString.getIterator();
        int paragraphStart = charIter.getBeginIndex();
        int paragraphEnd = charIter.getEndIndex();
        LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(charIter, g2d.getFontRenderContext());

        // This Margin is provided to avoid text overlap. If 1.0 No Margin set.
        double margin = 1.0;
        double formatWidth = width * margin;

        // Get line offset from lineMeasurer until the entire paragraph has been
        // displayed. This is added to UserSetValue to get the Exact Text during
        // PDF Generation
        int currPos = 0;
        String userSelText;
        if (startPos >= paragraphEnd)
            return -1;
        lineMeasurer.setPosition(startPos);
        while (lineMeasurer.getPosition() < paragraphEnd) {
            // Retrieve next layout.
            lineMeasurer.setPosition(startPos);
            currPos = lineMeasurer.nextOffset((float) formatWidth);
            // userSelText = vdpText.substring(startPos, currPos);
            System.out.println(
                    "Text Start: " + startPos + " :CurrPos: " + currPos + " VDP Text Length: " + text.length());
            break;
        }

        // The New Lines are supported only when the VDP Text Mode is Para.
        if (!isParaSelection) {
            return currPos;
        }
        // Checking for New Line
        int charIndex = 0;
        for (char c = charIter.first(); c != charIter.DONE; c = charIter.next()) {
            charIndex = charIter.getIndex();
            if (charIndex <= startPos)
                continue;
            if (charIndex >= currPos) {
                return currPos;
            }
            if (c == '\n') {
                System.out.println("Found New Line at Char Index: " + charIndex);
                return charIndex;
            }
        }

        return currPos;
    }
}

Java Swing Font getMultiLineTextForBBox(JComponent comp, double bboxWth, String txt, Font font)

Description

License

Declaration

Method Source Code

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