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com.aspose.imaging.fileformats.webp

Class WebPFrameBlock

    • Constructor Detail

      • WebPFrameBlock

        public WebPFrameBlock(RasterImage rasterImage)

        Initializes a new instance of the WebPFrameBlock class.

        Parameters:
        rasterImage - The raster image.

      • WebPFrameBlock

        public WebPFrameBlock(int width,
                      int height)

        Initializes a new instance of the WebPFrameBlock class.

        Parameters:
        width - The width.
        height - The height.
        Code example:

        This example shows how to create a multi-frame animated WebP image with the specified options.

        String dir = "c:\\temp\\";

com.aspose.imaging.imageoptions.WebPOptions createOptions = new com.aspose.imaging.imageoptions.WebPOptions();
createOptions.setLossless(true);
createOptions.setQuality(100f);
createOptions.setAnimBackgroundColor((long) com.aspose.imaging.Color.getGray().toArgb());

// The default frame plus 36 + 36 additional frames.
createOptions.setAnimLoopCount(36 + 36 + 1);

// Create a WebP image of 100x100 px.
com.aspose.imaging.fileformats.webp.WebPImage webPImage = new com.aspose.imaging.fileformats.webp.WebPImage(100, 100, createOptions);
try {
    // The first circle is red
    com.aspose.imaging.brushes.SolidBrush brush1 = new com.aspose.imaging.brushes.SolidBrush(com.aspose.imaging.Color.getRed());

    // The second circle is black
    com.aspose.imaging.brushes.SolidBrush brush2 = new com.aspose.imaging.brushes.SolidBrush(com.aspose.imaging.Color.getBlack());

    // Gradually increase the angle of the red arc shape.
    for (int angle = 10; angle <= 360; angle += 10) {
        com.aspose.imaging.fileformats.webp.WebPFrameBlock block = new com.aspose.imaging.fileformats.webp.WebPFrameBlock(100, 100);
        com.aspose.imaging.Graphics graphics = new com.aspose.imaging.Graphics(block);
        graphics.fillPie(brush1, block.getBounds(), 0, angle);

        webPImage.addBlock(block);
    }

    // Gradually increase the angle of the black arc and wipe out the red arc.
    for (int angle = 10; angle <= 360; angle += 10) {
        com.aspose.imaging.fileformats.webp.WebPFrameBlock block = new com.aspose.imaging.fileformats.webp.WebPFrameBlock(100, 100);

        com.aspose.imaging.Graphics graphics = new com.aspose.imaging.Graphics(block);
        graphics.fillPie(brush2, block.getBounds(), 0, angle);
        graphics.fillPie(brush1, block.getBounds(), angle, 360 - angle);

        webPImage.addBlock(block);
    }

    // Save to a WebP file
    webPImage.save(dir + "output.webp");
} finally {
    webPImage.dispose();
}

    • Method Detail

      • getBitsPerPixel

        public int getBitsPerPixel()

        Gets the image bits per pixel count.

        Specified by:
        getBitsPerPixel in class Image
        Returns:
        The image bits per pixel count.

      • hasAlpha

        public boolean hasAlpha()

        Gets a value indicating whether this instance has alpha.

        Overrides:
        hasAlpha in class RasterImage
        Returns:
        true if this instance has alpha; otherwise, false.
        Code example:

        The following example loads a WEBP image and prints information about raw data format and alpha channel.

        String dir = "c:\\temp\\";
String fileName = dir + "sample.webp";
com.aspose.imaging.Image image = com.aspose.imaging.Image.load(fileName);
try {
    com.aspose.imaging.fileformats.webp.WebPImage webpImage = (com.aspose.imaging.fileformats.webp.WebPImage) image;

    // If the active TIFF frame has alpha channel, then the entire TIFF image is considered to have alpha channel.
    System.out.printf("ImageFile=%s, FileFormat=%s, HasAlpha=%s\r\n", fileName, webpImage.getRawDataFormat(), webpImage.hasAlpha());

    int i = 0;
    for (com.aspose.imaging.fileformats.webp.IFrame frame : webpImage.getBlocks()) {
        if (frame instanceof com.aspose.imaging.fileformats.webp.WebPFrameBlock) {
            com.aspose.imaging.fileformats.webp.WebPFrameBlock frameBlock = (com.aspose.imaging.fileformats.webp.WebPFrameBlock) frame;
            System.out.printf("Frame=%s, FileFormat=%s, HasAlpha=%s\r\n", i++, frameBlock.getRawDataFormat(), frameBlock.hasAlpha());
        }
    }
} finally {
    image.dispose();
}

// The output may look like this:
// ImageFile=c:\temp\sample.webp, FileFormat=RgbIndexed1Bpp, used channels: 1, HasAlpha=False
// Frame=0, FileFormat=RgbIndexed1Bpp, used channels: 1, HasAlpha=False

      • getDuration

        public short getDuration()

        Gets or sets the frame duration.

        Specified by:
        getDuration in interface IFrame
        Returns:
        The duration.

      • setDuration

        public void setDuration(short value)

        Gets or sets the frame duration.

        Specified by:
        setDuration in interface IFrame
        Parameters:
        value - The duration.

      • getLeft

        public short getLeft()

        Gets or sets the frame position left.

        Specified by:
        getLeft in interface IFrame
        Returns:
        The left.

      • setLeft

        public void setLeft(short value)

        Gets or sets the frame position left.

        Specified by:
        setLeft in interface IFrame
        Parameters:
        value - The left.

      • getTop

        public short getTop()

        Gets or sets the frame position top.

        Specified by:
        getTop in interface IFrame
        Returns:
        The top.

      • setTop

        public void setTop(short value)

        Gets or sets the frame position top.

        Specified by:
        setTop in interface IFrame
        Parameters:
        value - The top.

      • getFrameTime

        public final int getFrameTime()

        Gets the duration.

        Value: The duration. <autogeneratedoc></autogeneratedoc>
        Specified by:
        getFrameTime in interface IAnimationFrame
        Returns:
        the duration.

      • getFrameTop

        public final int getFrameTop()

        Converts to p.

        Value: The top. <autogeneratedoc></autogeneratedoc>
        Specified by:
        getFrameTop in interface IAnimationFrame

      • getFrameLeft

        public final int getFrameLeft()

        Gets the left.

        Value: The left. <autogeneratedoc></autogeneratedoc>
        Specified by:
        getFrameLeft in interface IAnimationFrame
        Returns:
        the left.