package be.nikiroo.utils.ui;
+import java.awt.Dimension;
+import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
+import be.nikiroo.utils.IOUtils;
import be.nikiroo.utils.Image;
import be.nikiroo.utils.ImageUtils;
import be.nikiroo.utils.StringUtils;
* @author niki
*/
public class ImageUtilsAwt extends ImageUtils {
+ /**
+ * A rotation to perform on an image.
+ *
+ * @author niki
+ */
+ public enum Rotation {
+ /** No rotation */
+ NONE,
+ /** Rotate the image to the right */
+ RIGHT,
+ /** Rotate the image to the left */
+ LEFT,
+ /** Rotate the image by 180° */
+ UTURN
+ }
+
@Override
protected boolean check() {
// Will not work if ImageIO is not available
* in case of IO error
*/
public static BufferedImage fromImage(Image img) throws IOException {
+ return fromImage(img, Rotation.NONE);
+ }
+
+ /**
+ * Convert the given {@link Image} into a {@link BufferedImage} object,
+ * respecting the EXIF transformations if any.
+ *
+ * @param img
+ * the {@link Image}
+ * @param rotation
+ * the rotation to apply, if any (can be null, same as
+ * {@link Rotation#NONE})
+ *
+ * @return the {@link Image} object
+ *
+ * @throws IOException
+ * in case of IO error
+ */
+ public static BufferedImage fromImage(Image img, Rotation rotation)
+ throws IOException {
InputStream in = img.newInputStream();
BufferedImage image;
try {
String extra = "";
if (img.getSize() <= 2048) {
try {
- extra = ", content: "
- + new String(img.getData(), "UTF-8");
+ byte[] data = null;
+ InputStream inData = img.newInputStream();
+ try {
+ data = IOUtils.toByteArray(inData);
+ } finally {
+ inData.close();
+ }
+ extra = ", content: " + new String(data, "UTF-8");
} catch (Exception e) {
extra = ", content unavailable";
}
break;
}
+ if (rotation == null)
+ rotation = Rotation.NONE;
+
+ switch (rotation) {
+ case RIGHT:
+ if (affineTransform == null) {
+ affineTransform = new AffineTransform();
+ }
+ affineTransform.translate(height, 0);
+ affineTransform.rotate(Math.PI / 2);
+
+ int tmp = width;
+ width = height;
+ height = tmp;
+
+ break;
+ case LEFT:
+ if (affineTransform == null) {
+ affineTransform = new AffineTransform();
+ }
+ affineTransform.translate(0, width);
+ affineTransform.rotate(3 * Math.PI / 2);
+
+ int temp = width;
+ width = height;
+ height = temp;
+
+ break;
+ case UTURN:
+ if (affineTransform == null) {
+ affineTransform = new AffineTransform();
+ }
+ affineTransform.translate(width, height);
+ affineTransform.rotate(Math.PI);
+ break;
+ default:
+ break;
+ }
+
if (affineTransform != null) {
AffineTransformOp affineTransformOp = new AffineTransformOp(
affineTransform, AffineTransformOp.TYPE_BILINEAR);
return image;
}
+
+ /**
+ * Scale a dimension.
+ *
+ * @param imageSize
+ * the actual image size
+ * @param areaSize
+ * the base size of the target to get snap sizes for
+ * @param zoom
+ * the zoom factor (ignored on snap mode)
+ * @param snapMode
+ * NULL for no snap mode, TRUE to snap to width and FALSE for
+ * snap to height)
+ *
+ * @return the scaled (minimum is 1x1)
+ */
+ public static Dimension scaleSize(Dimension imageSize, Dimension areaSize,
+ double zoom, Boolean snapMode) {
+ Integer[] sz = scaleSize(imageSize.width, imageSize.height,
+ areaSize.width, areaSize.height, zoom, snapMode);
+ return new Dimension(sz[0], sz[1]);
+ }
+
+ /**
+ * Resize the given image.
+ *
+ * @param image
+ * the image to resize
+ * @param areaSize
+ * the base size of the target dimension for snap sizes
+ * @param zoom
+ * the zoom factor (ignored on snap mode)
+ * @param snapMode
+ * NULL for no snap mode, TRUE to snap to width and FALSE for
+ * snap to height)
+ *
+ * @return a new, resized image
+ */
+ public static BufferedImage scaleImage(BufferedImage image,
+ Dimension areaSize, double zoom, Boolean snapMode) {
+ Dimension scaledSize = scaleSize(
+ new Dimension(image.getWidth(), image.getHeight()), areaSize,
+ zoom, snapMode);
+
+ return scaleImage(image, scaledSize);
+ }
+
+ /**
+ * Resize the given image.
+ *
+ * @param image
+ * the image to resize
+ * @param targetSize
+ * the target size
+ *
+ * @return a new, resized image
+ */
+ public static BufferedImage scaleImage(BufferedImage image,
+ Dimension targetSize) {
+ BufferedImage resizedImage = new BufferedImage(targetSize.width,
+ targetSize.height, BufferedImage.TYPE_4BYTE_ABGR);
+ Graphics2D g = resizedImage.createGraphics();
+ try {
+ g.drawImage(image, 0, 0, targetSize.width, targetSize.height, null);
+ } finally {
+ g.dispose();
+ }
+
+ return resizedImage;
+ }
}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff