| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.graphics.*; |
| |
| class ImageList { |
| int /*long*/ [] pixbufs; |
| int width = -1, height = -1; |
| Image [] images; |
| |
| public ImageList() { |
| images = new Image [4]; |
| pixbufs = new int /*long*/ [4]; |
| } |
| |
| public int add (Image image) { |
| int index = 0; |
| while (index < images.length) { |
| if (images [index] != null) { |
| if (images [index].isDisposed ()) { |
| OS.g_object_unref (pixbufs [index]); |
| images [index] = null; |
| pixbufs [index] = 0; |
| } |
| } |
| if (images [index] == null) break; |
| index++; |
| } |
| if (index == images.length) { |
| Image [] newImages = new Image [images.length + 4]; |
| System.arraycopy (images, 0, newImages, 0, images.length); |
| images = newImages; |
| int /*long*/ [] newPixbufs = new int /*long*/ [pixbufs.length + 4]; |
| System.arraycopy (pixbufs, 0, newPixbufs, 0, pixbufs.length); |
| pixbufs = newPixbufs; |
| } |
| set (index, image); |
| return index; |
| } |
| |
| public void dispose () { |
| if (pixbufs == null) return; |
| for (int index=0; index<pixbufs.length; index++) { |
| if (pixbufs [index] != 0) OS.g_object_unref (pixbufs [index]); |
| } |
| images = null; |
| pixbufs = null; |
| } |
| |
| public Image get (int index) { |
| return images [index]; |
| } |
| |
| int /*long*/ getPixbuf (int index) { |
| return pixbufs [index]; |
| } |
| |
| public int indexOf (Image image) { |
| if (image == null) return -1; |
| for (int index=0; index<images.length; index++) { |
| if (image == images [index]) return index; |
| } |
| return -1; |
| } |
| |
| int indexOf (int /*long*/ pixbuf) { |
| if (pixbuf == 0) return -1; |
| for (int index=0; index<images.length; index++) { |
| if (pixbuf == pixbufs [index]) return index; |
| } |
| return -1; |
| } |
| |
| public boolean isDisposed () { |
| return images == null; |
| } |
| |
| public void put (int index, Image image) { |
| int count = images.length; |
| if (!(0 <= index && index < count)) return; |
| if (image != null) { |
| set (index, image); |
| } else { |
| images [index] = null; |
| if (pixbufs [index] != 0) OS.g_object_unref (pixbufs [index]); |
| pixbufs [index] = 0; |
| } |
| } |
| |
| public void remove (Image image) { |
| if (image == null) return; |
| for (int index=0; index<images.length; index++) { |
| if (image == images [index]){ |
| OS.g_object_unref (pixbufs [index]); |
| images [index] = null; |
| pixbufs [index] = 0; |
| } |
| } |
| } |
| |
| void set (int index, Image image) { |
| int [] w = new int [1], h = new int [1]; |
| OS.gdk_drawable_get_size (image.pixmap, w, h); |
| int /*long*/ pixbuf = Display.createPixbuf (image); |
| if (width == -1 || height == -1) { |
| width = w [0]; |
| height = h [0]; |
| } |
| if (w [0] != width || h [0] != height) { |
| int /*long*/ scaledPixbuf = OS.gdk_pixbuf_scale_simple(pixbuf, width, height, OS.GDK_INTERP_BILINEAR); |
| OS.g_object_unref (pixbuf); |
| pixbuf = scaledPixbuf; |
| } |
| int /*long*/ oldPixbuf = pixbufs [index]; |
| if (oldPixbuf != 0) { |
| if (images [index] == image) { |
| OS.gdk_pixbuf_copy_area (pixbuf, 0, 0, width, height, oldPixbuf, 0, 0); |
| OS.g_object_unref (pixbuf); |
| pixbuf = oldPixbuf; |
| } else { |
| OS.g_object_unref (oldPixbuf); |
| } |
| } |
| pixbufs [index] = pixbuf; |
| images [index] = image; |
| } |
| |
| public int size () { |
| int result = 0; |
| for (int index=0; index<images.length; index++) { |
| if (images [index] != null) { |
| if (images [index].isDisposed ()) { |
| OS.g_object_unref (pixbufs [index]); |
| images [index] = null; |
| pixbufs [index] = 0; |
| } |
| if (images [index] != null) result++; |
| } |
| } |
| return result; |
| } |
| |
| } |