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author | Alexander Sulfrian <alexander@sulfrian.net> | 2010-06-08 08:22:05 +0200 |
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committer | Alexander Sulfrian <alexander@sulfrian.net> | 2010-06-08 08:22:05 +0200 |
commit | d7c5ad7d6263fd1baf9bfdbaa4c50b70ef2fbdb2 (patch) | |
tree | ae0b65da6432f4c26c8d5a7319efbda5d172846c /infrastructure/framework-src/modules/image.js | |
parent | fa61221dcd89fcd72cba2c97971626f456c86e5d (diff) | |
download | etherpad-d7c5ad7d6263fd1baf9bfdbaa4c50b70ef2fbdb2.tar.gz etherpad-d7c5ad7d6263fd1baf9bfdbaa4c50b70ef2fbdb2.tar.xz etherpad-d7c5ad7d6263fd1baf9bfdbaa4c50b70ef2fbdb2.zip |
reverted folder structure change for better mergeing with upstream
Diffstat (limited to 'infrastructure/framework-src/modules/image.js')
-rw-r--r-- | infrastructure/framework-src/modules/image.js | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/infrastructure/framework-src/modules/image.js b/infrastructure/framework-src/modules/image.js deleted file mode 100644 index 8aec74b..0000000 --- a/infrastructure/framework-src/modules/image.js +++ /dev/null @@ -1,110 +0,0 @@ -/** - * Copyright 2009 Google Inc. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS-IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -import("blob"); - -jimport("java.awt.image.BufferedImage"); -jimport("org.apache.sanselan.Sanselan"); -jimport("org.apache.sanselan.ImageFormat"); - -if (java.lang.System.getProperty("java.awt.headless") == null) { - // If the system property isn't set either way, then default to "headless" mode, - // so that we don't start calling the window manager when the AWT classes - // are loaded. For example, on OS X the java process is given a Dock icon - // when we create our first BufferedImage. - java.lang.System.setProperty("java.awt.headless", "true"); -} - -/** - * Encodes the given pixel data into an image blob, ready to be served to - * the client. Pixels are specified as 32-bit ints in the format AARRGGBB, - * and the order is across rows first, then down columns. If useTransparency - * is true, then all pixels should have an alpha channel as their - * most-significant byte, with 0xff being fully opaque. If useTransparency - * is false, all pixels are fully opaque and the high byte is ignored. - * Supported formats: GIF. - * <p> - * For example, to create a GIF image consisting of a green pixel followed - * by a transparent pixel to the right of it, use: - * imageBlobFromPixels(2, 1, [0xff00ff00, 0x00000000], true, "gif") - */ - -function pixelsToImageBlob(width, height, pixelArrayARGB, useTransparency, format) { - var image = _makeBufferedImage(width, height); - var array = _makePixelArray(width, height); - var alphaMask = (useTransparency ? 0x00000000 : 0xff000000); - - for(var i=0; i<array.length; i++) { - // bitwise operations cause a JS number to become a signed 32-bit int - array[i] = (pixelArrayARGB[i] | alphaMask); - } - - _setImagePixels(image, array); - - if (format.toLowerCase() == "gif") { - return _bufferedImage2gifBlob(image); - } - return null; -} - -/** - * Creates a blob of image data in a format readable by a web browser - * that consists of a solid, opaque color and has the given width - * and height. The sixHexDigits must be a number, such as - * 0x12fda3, or a string, such as "12fda3". - */ -function solidColorImageBlob(width, height, sixHexDigits) { - var image = _makeBufferedImage(width, height); - var array = _makePixelArray(width, height); - - var pixel = 0xffffff; - if ((typeof sixHexDigits) == "number") { - pixel = sixHexDigits; - } - else if ((typeof sixHexDigits) == "string") { - pixel = Number("0x"+sixHexDigits); - } - - // bitwise operations cause a JS number to become a signed 32-bit int - pixel = ((pixel & 0xffffff) | 0xff000000); - - java.util.Arrays.fill(array, pixel); - _setImagePixels(image, array); - - return _bufferedImage2gifBlob(image); -} - -function _makeBufferedImage(width, height) { - return new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); -} - -function _makePixelArray(width, height) { - return java.lang.reflect.Array.newInstance(java.lang.Integer.TYPE, - width*height); -} - -function _setImagePixels(image, array) { - var width = image.getWidth(); - var height = image.getHeight(); - - image.setRGB(0, 0, width, height, array, 0, width); -} - -function _bufferedImage2gifBlob(image) { - // Use the Apache Sanselan image library because it nails transparent GIFs. - var bytes = Sanselan.writeImageToBytes(image, ImageFormat.IMAGE_FORMAT_GIF, null); - return blob.byteArrayToBlob("image/gif", bytes); -} |