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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.internal.gtk.*;
import org.eclipse.swt.*;
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++;
}
int [] w = new int [1], h = new int [1];
OS.gdk_drawable_get_size (image.pixmap, w, h);
boolean hasMask = image.mask != 0;
int /*long*/ pixbuf = OS.gdk_pixbuf_new (OS.GDK_COLORSPACE_RGB, hasMask, 8, w [0], h [0]);
if (pixbuf == 0) SWT.error (SWT.ERROR_NO_HANDLES);
int /*long*/ colormap = OS.gdk_colormap_get_system ();
OS.gdk_pixbuf_get_from_drawable (pixbuf, image.pixmap, colormap, 0, 0, 0, 0, w [0], h [0]);
if (hasMask) {
int /*long*/ gdkMaskImagePtr = OS.gdk_drawable_get_image (image.mask, 0, 0, w [0], h [0]);
if (gdkMaskImagePtr == 0) SWT.error (SWT.ERROR_NO_HANDLES);
int stride = OS.gdk_pixbuf_get_rowstride (pixbuf);
int /*long*/ pixels = OS.gdk_pixbuf_get_pixels (pixbuf);
byte [] line = new byte [stride];
for (int y=0; y<h[0]; y++) {
int /*long*/ offset = pixels + (y * stride);
OS.memmove (line, offset, stride);
for (int x=0; x<w[0]; x++) {
if (OS.gdk_image_get_pixel (gdkMaskImagePtr, x, y) == 0) {
line[x*4+3] = 0;
}
}
OS.memmove (offset, line, stride);
}
OS.g_object_unref (gdkMaskImagePtr);
}
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;
}
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;
}
pixbufs [index] = pixbuf;
images [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 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;
}
}
}
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;
}
}
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