/**
* The Td operator.
*
* @param x The x coordinate.
* @param y The y coordinate.
* @throws IOException If there is an error writing to the stream.
*/
public void moveTextPositionByAmount(float x, float y) throws IOException {
if (!inTextMode) {
throw new IOException("Error: must call beginText() before moveTextPositionByAmount");
}
appendRawCommands(formatDecimal.format(x));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(y));
appendRawCommands(SPACE);
appendRawCommands(MOVE_TEXT_POSITION);
}
/**
* This will draw a string at the current location on the screen.
*
* @param text The text to draw.
* @throws IOException If an io exception occurs.
*/
public void drawString(String text) throws IOException {
if (!inTextMode) {
throw new IOException("Error: must call beginText() before drawString");
}
COSString string = new COSString(text);
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
string.writePDF(buffer);
appendRawCommands(new String(buffer.toByteArray(), "ISO-8859-1"));
appendRawCommands(SPACE);
appendRawCommands(SHOW_TEXT);
}
/**
* Draw a rectangle on the page using the current non stroking color.
*
* @param x The lower left x coordinate.
* @param y The lower left y coordinate.
* @param width The width of the rectangle.
* @param height The height of the rectangle.
* @throws IOException If there is an error while drawing on the screen.
*/
public void fillRect(float x, float y, float width, float height) throws IOException {
appendRawCommands(formatDecimal.format(x));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(y));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(width));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(height));
appendRawCommands(SPACE);
appendRawCommands(APPEND_RECTANGLE);
appendRawCommands(FILL);
}
/**
* Set the color components of current non stroking colorspace.
*
* @param components The components to set for the current color.
* @throws IOException If there is an error while writing to the stream.
*/
public void setNonStrokingColor(float[] components) throws IOException {
for (int i = 0; i < components.length; i++) {
appendRawCommands(formatDecimal.format(components[i]));
appendRawCommands(SPACE);
}
if (currentNonStrokingColorSpace instanceof PDSeparation
|| currentNonStrokingColorSpace instanceof PDPattern
|| currentNonStrokingColorSpace instanceof PDDeviceN
|| currentNonStrokingColorSpace instanceof PDICCBased) {
appendRawCommands(SET_NON_STROKING_COLOR_COMPLEX);
} else {
appendRawCommands(SET_NON_STROKING_COLOR_SIMPLE);
}
}
/**
* Set the non stroking color, specified as CMYK, 0-255.
*
* @param c The cyan value.
* @param m The magenta value.
* @param y The yellow value.
* @param k The black value.
* @throws IOException If an IO error occurs while writing to the stream.
*/
public void setNonStrokingColor(int c, int m, int y, int k) throws IOException {
appendRawCommands(formatDecimal.format(c / 255d));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(m / 255d));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(y / 255d));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(k / 255d));
appendRawCommands(SPACE);
appendRawCommands(K_NON_STROKING);
}
/**
* Set the non stroking color, specified as CMYK, 0.0-1.0.
*
* @param c The cyan value.
* @param m The magenta value.
* @param y The yellow value.
* @param k The black value.
* @throws IOException If an IO error occurs while writing to the stream.
*/
public void setNonStrokingColor(double c, double m, double y, double k) throws IOException {
appendRawCommands(formatDecimal.format(c));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(m));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(y));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(k));
appendRawCommands(SPACE);
appendRawCommands(K_NON_STROKING);
}
/**
* Begin some text operations.
*
* @throws IOException If there is an error writing to the stream or if you attempt to nest
* beginText calls.
*/
public void beginText() throws IOException {
if (inTextMode) {
throw new IOException("Error: Nested beginText() calls are not allowed.");
}
appendRawCommands(BEGIN_TEXT);
inTextMode = true;
}
/**
* End some text operations.
*
* @throws IOException If there is an error writing to the stream or if you attempt to nest
* endText calls.
*/
public void endText() throws IOException {
if (!inTextMode) {
throw new IOException("Error: You must call beginText() before calling endText.");
}
appendRawCommands(END_TEXT);
inTextMode = false;
}
private void writeColorSpace(PDColorSpace colorSpace) throws IOException {
COSName key = null;
if (colorSpace instanceof PDDeviceGray
|| colorSpace instanceof PDDeviceRGB
|| colorSpace instanceof PDDeviceCMYK) {
key = COSName.getPDFName(colorSpace.getName());
} else {
COSDictionary colorSpaces =
(COSDictionary) resources.getCOSDictionary().getDictionaryObject(COSName.COLORSPACE);
if (colorSpaces == null) {
colorSpaces = new COSDictionary();
resources.getCOSDictionary().setItem(COSName.COLORSPACE, colorSpaces);
}
key = colorSpaces.getKeyForValue(colorSpace.getCOSObject());
if (key == null) {
int counter = 0;
String csName = "CS";
while (colorSpaces.containsValue(csName + counter)) {
counter++;
}
key = COSName.getPDFName(csName + counter);
colorSpaces.setItem(key, colorSpace);
}
}
key.writePDF(output);
appendRawCommands(SPACE);
}
/**
* Set the non stroking color, specified as RGB, 0-255.
*
* @param r The red value.
* @param g The green value.
* @param b The blue value.
* @throws IOException If an IO error occurs while writing to the stream.
*/
public void setNonStrokingColor(int r, int g, int b) throws IOException {
appendRawCommands(formatDecimal.format(r / 255d));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(g / 255d));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(b / 255d));
appendRawCommands(SPACE);
appendRawCommands(RG_NON_STROKING);
}
private boolean markupMatch(Color color, PDPageContentStream contentStream, Match markingMatch)
throws IOException {
final List<PDRectangle> textBoundingBoxes = getTextBoundingBoxes(markingMatch.positions);
if (textBoundingBoxes.size() > 0) {
contentStream.appendRawCommands("/highlights gs\n");
contentStream.setNonStrokingColor(color);
for (PDRectangle textBoundingBox : textBoundingBoxes) {
contentStream.fillRect(
textBoundingBox.getLowerLeftX(),
textBoundingBox.getLowerLeftY(),
Math.max(
Math.abs(textBoundingBox.getUpperRightX() - textBoundingBox.getLowerLeftX()), 10),
10);
}
return true;
}
return false;
}
/**
* Set the font to draw text with.
*
* @param font The font to use.
* @param fontSize The font size to draw the text.
* @throws IOException If there is an error writing the font information.
*/
public void setFont(PDFont font, float fontSize) throws IOException {
String fontMapping = (String) fontMappings.get(font);
if (fontMapping == null) {
fontMapping = MapUtil.getNextUniqueKey(fonts, "F");
fontMappings.put(font, fontMapping);
fonts.put(fontMapping, font);
}
appendRawCommands("/");
appendRawCommands(fontMapping);
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(fontSize));
appendRawCommands(SPACE);
appendRawCommands(SET_FONT);
}
/**
* Draw a line on the page using the current non stroking color and the current line width.
*
* @param xStart The start x coordinate.
* @param yStart The start y coordinate.
* @param xEnd The end x coordinate.
* @param yEnd The end y coordinate.
* @throws IOException If there is an error while drawing on the screen.
*/
public void drawLine(float xStart, float yStart, float xEnd, float yEnd) throws IOException {
// moveTo
appendRawCommands(formatDecimal.format(xStart));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(yStart));
appendRawCommands(SPACE);
appendRawCommands(MOVE_TO);
// lineTo
appendRawCommands(formatDecimal.format(xEnd));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(yEnd));
appendRawCommands(SPACE);
appendRawCommands(LINE_TO);
// stroke
appendRawCommands(STROKE);
}
/**
* Set the non stroking color, specified as Grayscale 0.0-1.0.
*
* @param g The gray value.
* @throws IOException If an IO error occurs while writing to the stream.
*/
public void setNonStrokingColor(double g) throws IOException {
appendRawCommands(formatDecimal.format(g));
appendRawCommands(SPACE);
appendRawCommands(G_NON_STROKING);
}
/**
* Draw an xobject(form or image) at the x,y coordinates and a certain width and height.
*
* @param xobject The xobject to draw.
* @param x The x-coordinate to draw the image.
* @param y The y-coordinate to draw the image.
* @param width The width of the image to draw.
* @param height The height of the image to draw.
* @throws IOException If there is an error writing to the stream.
*/
public void drawXObject(PDXObject xobject, float x, float y, float width, float height)
throws IOException {
String xObjectPrefix = null;
if (xobject instanceof PDXObjectImage) {
xObjectPrefix = "Im";
} else {
xObjectPrefix = "Form";
}
String objMapping = (String) xobjectMappings.get(xobject);
if (objMapping == null) {
objMapping = MapUtil.getNextUniqueKey(xobjects, xObjectPrefix);
xobjectMappings.put(xobject, objMapping);
xobjects.put(objMapping, xobject);
}
appendRawCommands(SAVE_GRAPHICS_STATE);
appendRawCommands(formatDecimal.format(width));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(0));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(0));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(height));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(x));
appendRawCommands(SPACE);
appendRawCommands(formatDecimal.format(y));
appendRawCommands(SPACE);
appendRawCommands(CONCATENATE_MATRIX);
appendRawCommands(SPACE);
appendRawCommands("/");
appendRawCommands(objMapping);
appendRawCommands(SPACE);
appendRawCommands(XOBJECT_DO);
appendRawCommands(SPACE);
appendRawCommands(RESTORE_GRAPHICS_STATE);
}
/**
* Set the stroking color space. This will add the colorspace to the PDResources if necessary.
*
* @param colorSpace The colorspace to write.
* @throws IOException If there is an error writing the colorspace.
*/
public void setNonStrokingColorSpace(PDColorSpace colorSpace) throws IOException {
currentNonStrokingColorSpace = colorSpace;
writeColorSpace(colorSpace);
appendRawCommands(SET_NON_STROKING_COLORSPACE);
}
/**
* Set linewidth to the given value.
*
* @param lineWidth The width which is used for drwaing.
* @throws IOException If there is an error while drawing on the screen.
*/
public void setLineWidth(float lineWidth) throws IOException {
appendRawCommands(formatDecimal.format(lineWidth));
appendRawCommands(SPACE);
appendRawCommands(LINE_WIDTH);
}
/**
* This will append raw commands to the content stream.
*
* @param commands The commands to append to the stream.
* @throws IOException If an error occurs while writing to the stream.
*/
public void appendRawCommands(String commands) throws IOException {
appendRawCommands(commands.getBytes("ISO-8859-1"));
}
/**
* Set the stroking color, specified as grayscale, 0-255.
*
* @param g The gray value.
* @throws IOException If an IO error occurs while writing to the stream.
*/
public void setStrokingColor(int g) throws IOException {
appendRawCommands(formatDecimal.format(g / 255d));
appendRawCommands(SPACE);
appendRawCommands(G_STROKING);
}
