Examples with java.awt.image java.awt.image used on opensource projects

Example 91 with java.awt.image

use of java.awt.image in project JFramework by gugumall.

the class JUtilImage method resize.

/**
 * 将srcFile调整为newWidth*newHeight大小，并保存为destFile
 *
 * @param srcFile
 * @param destFile
 * @param newWidth
 * @param newHeight
 * @param imageFormat
 * @return
 * @throws Exception
 */
public void resize(File srcFile, File destFile, int newWidth, int newHeight, String imageFormat) throws Exception {
    if (!chkImageFormat(imageFormat)) {
        throw new Exception("图片类型不合法");
    }
    if (imageFormat.equalsIgnoreCase(FORMAT_GIF) || srcFile.getName().toLowerCase().endsWith(".gif")) {
        resizeGifImage(srcFile, destFile, newWidth, newHeight, true);
        return;
    }
    Image src = Toolkit.getDefaultToolkit().getImage(srcFile.getAbsolutePath());
    src = new ImageIcon(src).getImage();
    BufferedImage tag = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = tag.createGraphics();
    // 设置透明
    if (imageFormat.equals(JUtilImage.FORMAT_PNG)) {
        tag = g2d.getDeviceConfiguration().createCompatibleImage(newWidth, newHeight, Transparency.TRANSLUCENT);
    }
    g2d.dispose();
    g2d = tag.createGraphics();
    // 设置透明 end
    // 绘制缩小后的图
    g2d.drawImage(src, 0, 0, newWidth, newHeight, this);
    // 如果父目录不存在，则创建目录
    if (!destFile.getParentFile().exists()) {
        destFile.getParentFile().mkdirs();
    }
    // 输出到文件流
    FileOutputStream os = new FileOutputStream(destFile);
    ImageWriter writer = (ImageWriter) ImageIO.getImageWritersByFormatName(imageFormat).next();
    ImageOutputStream ios = ImageIO.createImageOutputStream(os);
    writer.setOutput(ios);
    ImageWriteParam param = new JPEGImageWriteParam(Locale.getDefault());
    param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    param.setCompressionQuality(quality);
    writer.write(null, new IIOImage(tag, null, null), param);
    writer.dispose();
    ios.flush();
    ios.close();
    os.close();
}

Example 92 with java.awt.image

use of java.awt.image in project JFramework by gugumall.

the class JUtilImage method zoomToWidth.

/**
 * 将srcFile按比例缩放，使其宽度等于width，并保存为destFile
 *
 * @param srcFile
 * @param destFile
 * @param width
 * @param imageFormat
 * @return
 * @throws Exception
 */
public void zoomToWidth(File srcFile, File destFile, int width, String imageFormat) throws Exception {
    if (!chkImageFormat(imageFormat)) {
        throw new Exception("图片类型不合法");
    }
    Image src = Toolkit.getDefaultToolkit().getImage(srcFile.getAbsolutePath());
    src = new ImageIcon(src).getImage();
    double oldWidth = (double) src.getWidth(this);
    double scale = width / oldWidth;
    zoom(srcFile, destFile, scale, imageFormat);
}

Example 93 with java.awt.image

use of java.awt.image in project JFramework by gugumall.

the class JUtilImage method zoomToSize.

/**
 * 将srcFile按比例缩放，使其较长一边的长度等于longerSideSize，并保存为destFile
 *
 * @param srcFile
 * @param destFile
 * @param longerSideSize
 * @param imageFormat
 * @return
 * @throws Exception
 */
public void zoomToSize(File srcFile, File destFile, int longerSideSize, String imageFormat) throws Exception {
    if (!chkImageFormat(imageFormat)) {
        throw new Exception("图片类型不合法");
    }
    Image src = Toolkit.getDefaultToolkit().getImage(srcFile.getAbsolutePath());
    src = new ImageIcon(src).getImage();
    double oldWidth = (double) src.getWidth(this);
    double oldHeight = (double) src.getHeight(this);
    double scale = 1;
    if (oldWidth > oldHeight) {
        scale = longerSideSize / oldWidth;
    } else {
        scale = longerSideSize / oldHeight;
    }
    zoom(srcFile, destFile, scale, imageFormat);
}

Example 94 with java.awt.image

use of java.awt.image in project JFramework by gugumall.

the class JUtilImage method zoomToHeight.

/**
 * 将srcFile按比例缩放，使其高度等于height，并保存为destFile
 *
 * @param srcFile
 * @param destFile
 * @param height
 * @param imageFormat
 * @return
 * @throws Exception
 */
public void zoomToHeight(File srcFile, File destFile, int height, String imageFormat) throws Exception {
    if (!chkImageFormat(imageFormat)) {
        throw new Exception("图片类型不合法");
    }
    Image src = Toolkit.getDefaultToolkit().getImage(srcFile.getAbsolutePath());
    src = new ImageIcon(src).getImage();
    double oldHeight = (double) src.getHeight(this);
    double scale = height / oldHeight;
    zoom(srcFile, destFile, scale, imageFormat);
}

Example 95 with java.awt.image

use of java.awt.image in project JFramework by gugumall.

the class JUtilImage method zoomToSizeByShorterSideIfLarger.

/**
 * 将srcFile按比例缩放，使其较长一边的长度等于longerSideSize，并保存为destFile
 *
 * @param srcFile
 * @param destFile
 * @param longerSideSize
 * @param imageFormat
 * @return
 * @throws Exception
 */
public void zoomToSizeByShorterSideIfLarger(File srcFile, File destFile, int shorterSideSize, String imageFormat) throws Exception {
    if (!chkImageFormat(imageFormat)) {
        throw new Exception("图片类型不合法");
    }
    Image src = Toolkit.getDefaultToolkit().getImage(srcFile.getAbsolutePath());
    src = new ImageIcon(src).getImage();
    double oldWidth = (double) src.getWidth(this);
    double oldHeight = (double) src.getHeight(this);
    if (oldWidth <= shorterSideSize && oldHeight <= shorterSideSize) {
        JDFSFile.saveStream(new FileInputStream(srcFile), destFile.getAbsolutePath());
        return;
    }
    double scale = 1;
    if (oldWidth < oldHeight) {
        scale = shorterSideSize / oldWidth;
    } else {
        scale = shorterSideSize / oldHeight;
    }
    zoom(srcFile, destFile, scale, imageFormat);
}