magick.java

来自「手机图像自动转换」· Java 代码 · 共 59 行

package magick;


import java.awt.Rectangle;


/**
 * The sole purchase of this class is to cause the native
 * library to be loaded whenever a concrete class is used
 * and provide utility methods.
 *
 * @author Eric Yeo
 * @author Max Kollegov <[e-mail]>
 */
public class Magick {

    static {
        String clprop = System.getProperty("jmagick.systemclassloader");
        if (clprop == null || clprop.equalsIgnoreCase("yes")) {
            try {
                ClassLoader.getSystemClassLoader()
                    .loadClass("magick.MagickLoader").newInstance();
            }
            catch(ClassNotFoundException e) {
                throw new RuntimeException("Can't load MagickLoader " +
                                           "(class not found)");
            }
            catch(IllegalAccessException e) {
                throw new RuntimeException("Access to SystemClassLoader "+
                                           "denied (IllegalAccessException)");
            }
            catch(InstantiationException e) {
                throw new RuntimeException("Can't instantiate MagicLoader " +
                                           "(InstantiationException)");
            }
        }
        else {
            System.loadLibrary("JMagick");    
        }
    }

    /**
     * Parses a geometry specification and returns the
     * width, height, x, and y values in the rectangle.
     * It also returns flags that indicates which of the
     * four values (width, height, xoffset, yoffset) were
     * located in the string, and whether the x and y values
     * are negative.  In addition, there are flags to report
     * any meta characters (%, !, <, and >).
     * @param geometry String containing the geometry specifications
     * @param rect The rectangle of values x, y, width and height
     * @return bitmask indicating the values in the geometry string
     * @see magick.GeometryFlags
     */
    public static native int parseImageGeometry(String geometry,
                                                Rectangle rect);

}