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The Java Developers Almanac 1.4Order this book from Amazon. |
e663. Getting the Transparent Pixel and Number of Colors Used in a GIF ImageAIndexColorModel is used to represent the color table of a GIF
image.
// Get GIF image Image image = new ImageIcon("image.gif").getImage(); // Get the color model; this method is implemented in // e662 Getting the Color Model of an Image IndexColorModel colorModel = (IndexColorModel)getColorModel(image); // Get transparent pixel int trans = colorModel.getTransparentPixel(); if (trans == -1) { // There is no transparent pixel } // Get the number of colors int numColors = colorModel.getMapSize();
e661. Determining If an Image Has Transparent Pixels e662. Getting the Color Model of an Image e664. Getting a Sub-Image of an Image e665. Filtering the RGB Values in an Image
© 2002 Addison-Wesley. |