* @param string the encoded text
* @throws IOException if there is an error processing the string
*/
protected void showText(byte[] string) throws IOException
{
PDGraphicsState state = getGraphicsState();
PDTextState textState = state.getTextState();
// get the current font
PDFont font = textState.getFont();
if (font == null)
{
LOG.warn("No current font, will use default");
font = PDFontFactory.createDefaultFont();
}
float fontSize = textState.getFontSize();
float horizontalScaling = textState.getHorizontalScaling() / 100f;
float charSpacing = textState.getCharacterSpacing();
// put the text state parameters into matrix form
Matrix parameters = new Matrix(
fontSize * horizontalScaling, 0, // 0
0, fontSize, // 0
0, textState.getRise()); // 1
// read the stream until it is empty
InputStream in = new ByteArrayInputStream(string);
while (in.available() > 0)
{
// decode a character
int before = in.available();
int code = font.readCode(in);
int codeLength = before - in.available();
String unicode = font.toUnicode(code);
// Word spacing shall be applied to every occurrence of the single-byte character code
// 32 in a string when using a simple font or a composite font that defines code 32 as
// a single-byte code.
float wordSpacing = 0;
if (codeLength == 1 && code == 32)
{
wordSpacing += textState.getWordSpacing();
}
// text rendering matrix (text space -> device space)
Matrix ctm = state.getCurrentTransformationMatrix();
Matrix textRenderingMatrix = parameters.multiply(textMatrix).multiply(ctm);
// get glyph's position vector if this is vertical text
// changes to vertical text should be tested with PDFBOX-2294 and PDFBOX-1422
if (font.isVertical())