diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ImageList.java')
-rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ImageList.java | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ImageList.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ImageList.java new file mode 100644 index 0000000000..cab405e065 --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/ImageList.java @@ -0,0 +1,154 @@ +/******************************************************************************* + * 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; +} + +} |