javauis/eswt_qt/com.nokia.swt.extensions/extensions/org/eclipse/swt/internal/extension/ImageUtil.java
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/*******************************************************************************
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 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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 * All rights reserved. This program and the accompanying materials 
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 * are made available under the terms of the Eclipse Public License v1.0
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 * which accompanies this distribution, and is available at
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 * http://www.eclipse.org/legal/epl-v10.html
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 * 
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 * Contributors:
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 *     Nokia Corporation - initial implementation 
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 *******************************************************************************/
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package org.eclipse.swt.internal.extension;
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import org.eclipse.swt.graphics.Device;
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import org.eclipse.swt.graphics.Image;
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import org.eclipse.swt.graphics.Point;
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import org.eclipse.swt.graphics.Internal_GfxPackageSupport;
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import java.io.InputStream;
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public final class ImageUtil{
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    public static Image createImageWithoutSecurityCheck(Device device, String filename) {
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        return Internal_GfxPackageSupport.createImageWithoutSecurityCheck(device, filename);
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    }
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    /**
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     * @deprecated Use createImageFromTheme(Device device, String name) instead.
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     * @param device
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     * @param id
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     * @return
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     */
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    public static Image createImageFromTheme(Device device, int id) {
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        return null;
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    }
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    /**
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     * Creates an eSWT Image from a theme icon.
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     * Example:
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     *      Image image = ImageUtil.createImageFromTheme(display, "qtg_fr_rocker_normal_c");
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     * @param device
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     * @param name
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     * @return
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     */
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    public static Image createImageFromTheme(Device device, String name) {
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        Image res = null;
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        int iconHandle = org.eclipse.swt.internal.qt.OS.HbIcon_new(name);
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        org.eclipse.swt.internal.qt.graphics.Image cgImage = 
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            org.eclipse.swt.internal.qt.graphics.Image.createImageFromPixmap(
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                    org.eclipse.swt.internal.qt.OS.HbIcon_pixmap(iconHandle));
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        res = Internal_GfxPackageSupport.new_Image(device, cgImage);
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        org.eclipse.swt.internal.qt.OS.HbIcon_delete(iconHandle);
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        return res;
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    }
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    /**
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     * Returns the bounds of an Image without creating an actual Image instance.
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     * Useful if there's a need to check the bounds of large collection of images
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     * to choose one that gets initialized.
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     *
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     * For bitmap files the function returns the size of the bitmap. For SVG
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     * the default size of the image is returned.
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     *
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     * Note that contents of the file are loaded to memory even when using
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     * this function. If you are going to load the image anyway, using this 
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     * function is not efficient.
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     *
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     * @param device The device to use when loading
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     * @param filename Filename from where to read the image data from. File is loaded from the classpath, not from the file system. 
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     * @return Size of the image
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     * @throws IOException if image cannot be loaded
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     */
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    public static Point getImageSize(Device device, String filename) {
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        return Internal_GfxPackageSupport.getImageSize(device, filename);
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    }
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    /**
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     * Returns the bounds of an Image without creating an actual Image instance.
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     * Useful if there's a need to check the bounds of large collection of images
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     * to choose one that gets initialized.
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     *
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     * For bitmap files the function returns the size of the bitmap. For SVG
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     * the default size of the image is returned.
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     *
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     * Note that contents of the file are loaded to memory even when using
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     * this function. If you are going to load the image anyway, using this 
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     * function is not efficient.
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     *
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     * @param is The InputStream from where to read the image data from
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     * @return Size of the image
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     * @throws IOException if image cannot be loaded
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     */
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    public static Point getImageSize(InputStream stream) {
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        return Internal_GfxPackageSupport.getImageSize(stream);
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    }
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}