public static BufferedImage ConvertPageToImage(File afile, int i)
throws IOException, InterruptedException, IM4JavaException {
IMOperation op = new IMOperation();
op.addImage(afile.getAbsolutePath() + "[" + i + "]"); // look at myscript.sh
op.colorspace("RGB");
op.resize(640, 830);
op.type("TrueColor");
op.addImage("jpg:-"); // place holder for output file
// op.alpha("off"); //this command is slow and not needed anymore
// op.interpolate("spline");
// op.colorspace("RGB");
ConvertCmd convert = new ConvertCmd();
// convert.setSearchPath("/usr/local/Cellar/imagemagick/6.7.7-6/bin/convert");
// convert.setSearchPath("/usr/bin/convert");
// convert.setSearchPath("/Volumes/Main
// Drive/Users/angellopozo/ImageMagick-6.7.8/bin/convert");
// convert.setSearchPath("Users/angellopozo/ImageMagick-6.7.8/bin/convert");
// convert.setSearchPath("/usr/local/bin");
Stream2BufferedImage s2b = new Stream2BufferedImage();
convert.setOutputConsumer(s2b);
convert.run(op);
// convert.createScript("myscript.sh",op);//debug`` line
BufferedImage aPDF_img = s2b.getImage(); // PDF_img is the pdf_image
ImageIO.write(
aPDF_img,
"jpeg",
new File("Page_" + (i + 1) + "of_PDF.jpg")); // write whole pdf page to png
return aPDF_img;
} // end of ConvertPagetoImage
private void assembleOperation(IMOperation op, Parameters params, Dimension fullSize) {
// region transformation
Region region = params.getRegion();
if (!region.isFull()) {
if (region.isPercent()) {
// im4java doesn't support cropping x/y by percentage (only
// width/height), so we have to calculate them.
int x = Math.round(region.getX() / 100.0f * fullSize.width);
int y = Math.round(region.getY() / 100.0f * fullSize.height);
int width = Math.round(region.getWidth());
int height = Math.round(region.getHeight());
op.crop(width, height, x, y, "%");
} else {
op.crop(
Math.round(region.getWidth()), Math.round(region.getHeight()),
Math.round(region.getX()), Math.round(region.getY()));
}
}
// size transformation
Size size = params.getSize();
if (size.getScaleMode() != Size.ScaleMode.FULL) {
if (size.getScaleMode() == Size.ScaleMode.ASPECT_FIT_WIDTH) {
op.resize(size.getWidth());
} else if (size.getScaleMode() == Size.ScaleMode.ASPECT_FIT_HEIGHT) {
op.resize(null, size.getHeight());
} else if (size.getScaleMode() == Size.ScaleMode.NON_ASPECT_FILL) {
op.resize(size.getWidth(), size.getHeight(), "!".charAt(0));
} else if (size.getScaleMode() == Size.ScaleMode.ASPECT_FIT_INSIDE) {
op.resize(size.getWidth(), size.getHeight());
} else if (size.getPercent() != null) {
op.resize(Math.round(size.getPercent()), Math.round(size.getPercent()), "%".charAt(0));
}
}
// rotation transformation
Rotation rotation = params.getRotation();
if (rotation.shouldMirror()) {
op.flop();
}
if (rotation.getDegrees() != 0) {
op.rotate(rotation.getDegrees().doubleValue());
}
// quality transformation
Quality quality = params.getQuality();
if (quality != Quality.COLOR && quality != Quality.DEFAULT) {
switch (quality) {
case GRAY:
op.colorspace("Gray");
break;
case BITONAL:
op.monochrome();
break;
}
}
}
