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