Package sk.iway.iwcm.common

Class ImageTools

java.lang.Object
sk.iway.iwcm.common.ImageTools
public class ImageTools extends Object
Manipulacia s obrazkami

  • Method Details

    • supportsTransparency

      public static boolean supportsTransparency(String fileName)
      Returns true if the image format supports transparency (eg. PNG, WEBP, GIF).
      Parameters:
      fileName - - file name with extension
      Returns:
      true if file format supports transparency

    • getBufferedImageType

      public static int getBufferedImageType(String fileName)
      Returns BufferedImage type based on file format. For transparent images returns TYPE_INT_ARGB to preserve transparency, for others TYPE_INT_RGB.
      Parameters:
      fileName - - file name with extension
      Returns:
      BufferedImage.TYPE_INT_ARGB or BufferedImage.TYPE_INT_RGB

    • writeImage

      public static int writeImage(BufferedImage image, String fileName, int imageQuality, IwcmFile outputFile)
      Writes BufferedImage to file in correct format based on file extension. For transparent images preserves transparency. For JPG uses JPEG compression with 0.85 quality.
      Parameters:
      image - - BufferedImage to write
      fileName - - original file name to detect format (e.g. "photo.png")
      outputFile - - output IwcmFile to write to
      Returns:
      0 on success, 2 on error

    • isImage

      public static boolean isImage(String fileName)
      Returns true if fileName is image file (ends with .jpg, png...)
      Parameters:
      fileName -
      Returns:

    • isResizableImage

      public static boolean isResizableImage(String fileName)
      Returns true if fileName is image file and can be resized (ends with .jpg, png... but not .svg)
      Parameters:
      fileName -
      Returns:

    • resizeImage

      public static int resizeImage(IwcmFile imageFile, int width, int height)

    • resizeImage

      public static int resizeImage(String srcUrl, int width, int height)
      Resizne obrazok, vrati: 0-vsetko je OK 1-obrazok je uz teraz mensi 2-nepodarilo sa ulozit obrazok 3-nastala neznama chyba 4-obrazok je v nepodporovanom formate
      Parameters:
      srcUrl - - url adresa obrazku
      width - - sirka
      height - - vyska
      Returns:

    • cropImage

      public static int cropImage(IwcmFile imageFile, int width, int height, int startX, int startY)

    • cropImage

      public static int cropImage(String srcUrl, int width, int height, int startX, int startY)

    • rotateImage

      public static int rotateImage(IwcmFile imageFile, double angle)

    • executeImageMagick

      public static int executeImageMagick(IwcmFile imageFile, List<String> args)
      Executes ImageMagick command. Handles IwcmFSDB storage, if image is stored in DB, it is first written to disk, then processed and finally written back to DB.
      Parameters:
      imageFile -
      args - - list of arguments, replaces from and to placeholders with real file paths, if they are present in args
      Returns:

    • executeImageMagick

      public static int executeImageMagick(IwcmFile from, IwcmFile to, List<String> args)
      Executes ImageMagick command. Handles IwcmFSDB storage, if image is stored in DB, it is first written to disk, then processed and finally written back to DB.
      Parameters:
      from -
      to -
      args - - list of arguments, replaces from and to placeholders with real file paths, if they are present in args
      Returns:

    • existsImageMagickConvertCommand

      public static boolean existsImageMagickConvertCommand()
      Checks if ImageMagick convert command exists in configured directory.
      Returns:

    • rotateImage

      public static int rotateImage(String srcUrl, double angle)

    • convertCmykToRgb

      public static void convertCmykToRgb(String filePath)
      Skonvertuje fotku do RGB ak je v CMYK, ak je konverzia povolena.
      Parameters:
      filePath -

    • getIdentifyRuntimeFile

      public static String getIdentifyRuntimeFile()
      ziska prikaz programu Identify (sucast Imagemagick)
      Returns:

    • getMogrifyRuntimeFile

      public static String getMogrifyRuntimeFile()
      prikaz mogrify funguje rovnako ako convert ale ma ako parameter iba jednu cestu, prepisuje povodny vstupny subor http://www.imagemagick.org/www/mogrify.html
      Returns:

    • convertImageFormat

      public static String convertImageFormat(IwcmFile imageFile, String targetFormat)
      Convert image to target format (jpg, png, gif). If image is already in target format, no conversion is done and null is returned.
      Parameters:
      imageFile -
      targetFormat -
      Returns:
      - new file name (without path) if conversion was done, null otherwise