Java example source code file (XIconWindow.java)
The XIconWindow.java Java example source code
/*
* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package sun.awt.X11;
import java.awt.*;
import java.awt.image.*;
import sun.awt.IconInfo;
import sun.awt.image.ToolkitImage;
import sun.awt.image.ImageRepresentation;
import sun.util.logging.PlatformLogger;
public class XIconWindow extends XBaseWindow {
private final static PlatformLogger log = PlatformLogger.getLogger("sun.awt.X11.XIconWindow");
XDecoratedPeer parent;
Dimension size;
long iconPixmap = 0;
long iconMask = 0;
int iconWidth = 0;
int iconHeight = 0;
XIconWindow(XDecoratedPeer parent) {
super(new XCreateWindowParams(new Object[] {
PARENT, parent,
DELAYED, Boolean.TRUE}));
}
void instantPreInit(XCreateWindowParams params) {
super.instantPreInit(params);
this.parent = (XDecoratedPeer)params.get(PARENT);
}
/**
* @return array of XIconsSize structures, caller must free this array after use.
*/
private XIconSize[] getIconSizes() {
XToolkit.awtLock();
try {
AwtGraphicsConfigData adata = parent.getGraphicsConfigurationData();
final long screen = adata.get_awt_visInfo().get_screen();
final long display = XToolkit.getDisplay();
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest(adata.toString());
}
long status =
XlibWrapper.XGetIconSizes(display, XToolkit.getDefaultRootWindow(),
XlibWrapper.larg1, XlibWrapper.iarg1);
if (status == 0) {
return null;
}
int count = Native.getInt(XlibWrapper.iarg1);
long sizes_ptr = Native.getLong(XlibWrapper.larg1); // XIconSize*
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest("count = {1}, sizes_ptr = {0}", Long.valueOf(sizes_ptr), Integer.valueOf(count));
}
XIconSize[] res = new XIconSize[count];
for (int i = 0; i < count; i++, sizes_ptr += XIconSize.getSize()) {
res[i] = new XIconSize(sizes_ptr);
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest("sizes_ptr[{1}] = {0}", res[i], Integer.valueOf(i));
}
}
return res;
} finally {
XToolkit.awtUnlock();
}
}
private Dimension calcIconSize(int widthHint, int heightHint) {
if (XWM.getWMID() == XWM.ICE_WM) {
// ICE_WM has a bug - it only displays icons of the size
// 16x16, while reporting 32x32 in its size list
log.finest("Returning ICE_WM icon size: 16x16");
return new Dimension(16, 16);
}
XIconSize[] sizeList = getIconSizes();
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest("Icon sizes: {0}", (Object[]) sizeList);
}
if (sizeList == null) {
// No icon sizes so we simply fall back to 16x16
return new Dimension(16, 16);
}
boolean found = false;
int dist = 0xffffffff, newDist, diff = 0, closestHeight, closestWidth;
int saveWidth = 0, saveHeight = 0;
for (int i = 0; i < sizeList.length; i++) {
if (widthHint >= sizeList[i].get_min_width() &&
widthHint <= sizeList[i].get_max_width() &&
heightHint >= sizeList[i].get_min_height() &&
heightHint <= sizeList[i].get_max_height()) {
found = true;
if ((((widthHint-sizeList[i].get_min_width())
% sizeList[i].get_width_inc()) == 0) &&
(((heightHint-sizeList[i].get_min_height())
% sizeList[i].get_height_inc()) ==0)) {
/* Found an exact match */
saveWidth = widthHint;
saveHeight = heightHint;
dist = 0;
break;
}
diff = widthHint - sizeList[i].get_min_width();
if (diff == 0) {
closestWidth = widthHint;
} else {
diff = diff%sizeList[i].get_width_inc();
closestWidth = widthHint - diff;
}
diff = heightHint - sizeList[i].get_min_height();
if (diff == 0) {
closestHeight = heightHint;
} else {
diff = diff%sizeList[i].get_height_inc();
closestHeight = heightHint - diff;
}
newDist = closestWidth*closestWidth +
closestHeight*closestHeight;
if (dist > newDist) {
saveWidth = closestWidth;
saveHeight = closestHeight;
dist = newDist;
}
}
}
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest("found=" + found);
}
if (!found) {
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest("widthHint=" + widthHint + ", heightHint=" + heightHint
+ ", saveWidth=" + saveWidth + ", saveHeight=" + saveHeight
+ ", max_width=" + sizeList[0].get_max_width()
+ ", max_height=" + sizeList[0].get_max_height()
+ ", min_width=" + sizeList[0].get_min_width()
+ ", min_height=" + sizeList[0].get_min_height());
}
if (widthHint > sizeList[0].get_max_width() ||
heightHint > sizeList[0].get_max_height())
{
// Icon image too big
/* determine which way to scale */
int wdiff = widthHint - sizeList[0].get_max_width();
int hdiff = heightHint - sizeList[0].get_max_height();
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest("wdiff=" + wdiff + ", hdiff=" + hdiff);
}
if (wdiff >= hdiff) { /* need to scale width more */
saveWidth = sizeList[0].get_max_width();
saveHeight =
(int)(((double)sizeList[0].get_max_width()/widthHint) * heightHint);
} else {
saveWidth =
(int)(((double)sizeList[0].get_max_height()/heightHint) * widthHint);
saveHeight = sizeList[0].get_max_height();
}
} else if (widthHint < sizeList[0].get_min_width() ||
heightHint < sizeList[0].get_min_height())
{
// Icon image too small
saveWidth = (sizeList[0].get_min_width()+sizeList[0].get_max_width())/2;
saveHeight = (sizeList[0].get_min_height()+sizeList[0].get_max_height())/2;
} else {
// Icon image fits within right size
saveWidth = widthHint;
saveHeight = widthHint;
}
}
XToolkit.awtLock();
try {
XlibWrapper.XFree(sizeList[0].pData);
} finally {
XToolkit.awtUnlock();
}
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest("return " + saveWidth + "x" + saveHeight);
}
return new Dimension(saveWidth, saveHeight);
}
/**
* @return preffered icon size calculated from specific icon
*/
Dimension getIconSize(int widthHint, int heightHint) {
if (size == null) {
size = calcIconSize(widthHint, heightHint);
}
return size;
}
/**
* This function replaces iconPixmap handle with new image
* It does not replace window's hints, so it should be
* called only from setIconImage()
*/
void replaceImage(Image img)
{
if (parent == null) {
return;
}
//Prepare image
//create new buffered image of desired size
//in current window's color model
BufferedImage bi = null;
if (img != null && iconWidth != 0 && iconHeight != 0) {
GraphicsConfiguration defaultGC = parent.getGraphicsConfiguration().getDevice().getDefaultConfiguration();
ColorModel model = defaultGC.getColorModel();
WritableRaster raster = model.createCompatibleWritableRaster(iconWidth, iconHeight);
bi = new BufferedImage(model, raster, model.isAlphaPremultiplied(), null);
Graphics g = bi.getGraphics();
try {
//We need to draw image on SystemColors.window
//for using as iconWindow's background
g.setColor(SystemColor.window);
g.fillRect(0, 0, iconWidth, iconHeight);
if (g instanceof Graphics2D) {
((Graphics2D)g).setComposite(AlphaComposite.Src);
}
g.drawImage(img, 0, 0, iconWidth, iconHeight, null);
} finally {
g.dispose();
}
}
//create pixmap
XToolkit.awtLock();
try {
if (iconPixmap != 0) {
XlibWrapper.XFreePixmap(XToolkit.getDisplay(), iconPixmap);
iconPixmap = 0;
log.finest("Freed previous pixmap");
}
if (bi == null || iconWidth == 0 || iconHeight == 0) {
return; //The iconPixmap is 0 now, we have done everything
}
AwtGraphicsConfigData adata = parent.getGraphicsConfigurationData();
awtImageData awtImage = adata.get_awtImage(0);
XVisualInfo visInfo = adata.get_awt_visInfo();
iconPixmap = XlibWrapper.XCreatePixmap(XToolkit.getDisplay(),
XlibWrapper.RootWindow(XToolkit.getDisplay(), visInfo.get_screen()),
iconWidth,
iconHeight,
awtImage.get_Depth()
);
if (iconPixmap == 0) {
log.finest("Can't create new pixmap for icon");
return; //Can't do nothing
}
//Transform image data
long bytes = 0;
DataBuffer srcBuf = bi.getData().getDataBuffer();
if (srcBuf instanceof DataBufferByte) {
byte[] buf = ((DataBufferByte)srcBuf).getData();
ColorData cdata = adata.get_color_data(0);
int num_colors = cdata.get_awt_numICMcolors();
for (int i = 0; i < buf.length; i++) {
buf[i] = (buf[i] >= num_colors) ?
0 : cdata.get_awt_icmLUT2Colors(buf[i]);
}
bytes = Native.toData(buf);
} else if (srcBuf instanceof DataBufferInt) {
bytes = Native.toData(((DataBufferInt)srcBuf).getData());
} else if (srcBuf instanceof DataBufferUShort) {
bytes = Native.toData(((DataBufferUShort)srcBuf).getData());
} else {
throw new IllegalArgumentException("Unknown data buffer: " + srcBuf);
}
int bpp = awtImage.get_wsImageFormat().get_bits_per_pixel();
int slp =awtImage.get_wsImageFormat().get_scanline_pad();
int bpsl = paddedwidth(iconWidth*bpp, slp) >> 3;
if (((bpsl << 3) / bpp) < iconWidth) {
log.finest("Image format doesn't fit to icon width");
return;
}
long dst = XlibWrapper.XCreateImage(XToolkit.getDisplay(),
visInfo.get_visual(),
(int)awtImage.get_Depth(),
(int)XConstants.ZPixmap,
0,
bytes,
iconWidth,
iconHeight,
32,
bpsl);
if (dst == 0) {
log.finest("Can't create XImage for icon");
XlibWrapper.XFreePixmap(XToolkit.getDisplay(), iconPixmap);
iconPixmap = 0;
return;
} else {
log.finest("Created XImage for icon");
}
long gc = XlibWrapper.XCreateGC(XToolkit.getDisplay(), iconPixmap, 0, 0);
if (gc == 0) {
log.finest("Can't create GC for pixmap");
XlibWrapper.XFreePixmap(XToolkit.getDisplay(), iconPixmap);
iconPixmap = 0;
return;
} else {
log.finest("Created GC for pixmap");
}
try {
XlibWrapper.XPutImage(XToolkit.getDisplay(), iconPixmap, gc,
dst, 0, 0, 0, 0, iconWidth, iconHeight);
} finally {
XlibWrapper.XFreeGC(XToolkit.getDisplay(), gc);
}
} finally {
XToolkit.awtUnlock();
}
}
/**
* This function replaces iconPixmap handle with new image
* It does not replace window's hints, so it should be
* called only from setIconImage()
*/
void replaceMask(Image img) {
if (parent == null) {
return;
}
//Prepare image
BufferedImage bi = null;
if (img != null && iconWidth != 0 && iconHeight != 0) {
bi = new BufferedImage(iconWidth, iconHeight, BufferedImage.TYPE_INT_ARGB);
Graphics g = bi.getGraphics();
try {
g.drawImage(img, 0, 0, iconWidth, iconHeight, null);
} finally {
g.dispose();
}
}
//create mask
XToolkit.awtLock();
try {
if (iconMask != 0) {
XlibWrapper.XFreePixmap(XToolkit.getDisplay(), iconMask);
iconMask = 0;
log.finest("Freed previous mask");
}
if (bi == null || iconWidth == 0 || iconHeight == 0) {
return; //The iconMask is 0 now, we have done everything
}
AwtGraphicsConfigData adata = parent.getGraphicsConfigurationData();
awtImageData awtImage = adata.get_awtImage(0);
XVisualInfo visInfo = adata.get_awt_visInfo();
ColorModel cm = bi.getColorModel();
DataBuffer srcBuf = bi.getRaster().getDataBuffer();
int sidx = 0;//index of source element
int bpl = (iconWidth + 7) >> 3;//bytes per line
byte[] destBuf = new byte[bpl * iconHeight];
int didx = 0;//index of destination element
for (int i = 0; i < iconHeight; i++) {
int dbit = 0;//index of current bit
int cv = 0;
for (int j = 0; j < iconWidth; j++) {
if (cm.getAlpha(srcBuf.getElem(sidx)) != 0 ) {
cv = cv + (1 << dbit);
}
dbit++;
if (dbit == 8) {
destBuf[didx] = (byte)cv;
cv = 0;
dbit = 0;
didx++;
}
sidx++;
}
}
iconMask = XlibWrapper.XCreateBitmapFromData(XToolkit.getDisplay(),
XlibWrapper.RootWindow(XToolkit.getDisplay(), visInfo.get_screen()),
Native.toData(destBuf),
iconWidth, iconHeight);
} finally {
XToolkit.awtUnlock();
}
}
/**
* Sets icon image by selecting one of the images from the list.
* The selected image is the one having the best matching size.
*/
void setIconImages(java.util.List<IconInfo> icons) {
if (icons == null || icons.size() == 0) return;
int minDiff = Integer.MAX_VALUE;
Image min = null;
for (IconInfo iconInfo : icons) {
if (iconInfo.isValid()) {
Image image = iconInfo.getImage();
Dimension dim = calcIconSize(image.getWidth(null), image.getHeight(null));
int widthDiff = Math.abs(dim.width - image.getWidth(null));
int heightDiff = Math.abs(image.getHeight(null) - dim.height);
// "=" below allows to select the best matching icon
if (minDiff >= (widthDiff + heightDiff)) {
minDiff = (widthDiff + heightDiff);
min = image;
}
}
}
if (min != null) {
if (log.isLoggable(PlatformLogger.Level.FINER)) {
log.finer("Icon: {0}x{1}", min.getWidth(null), min.getHeight(null));
}
setIconImage(min);
}
}
void setIconImage(Image img) {
if (img == null) {
//if image is null, reset to default image
replaceImage(null);
replaceMask(null);
} else {
//get image size
int width;
int height;
if (img instanceof ToolkitImage) {
ImageRepresentation ir = ((ToolkitImage)img).getImageRep();
ir.reconstruct(ImageObserver.ALLBITS);
width = ir.getWidth();
height = ir.getHeight();
}
else {
width = img.getWidth(null);
height = img.getHeight(null);
}
Dimension iconSize = getIconSize(width, height);
if (iconSize != null) {
if (log.isLoggable(PlatformLogger.Level.FINEST)) {
log.finest("Icon size: {0}", iconSize);
}
iconWidth = iconSize.width;
iconHeight = iconSize.height;
} else {
log.finest("Error calculating image size");
iconWidth = 0;
iconHeight = 0;
}
replaceImage(img);
replaceMask(img);
}
//create icon window and set XWMHints
XToolkit.awtLock();
try {
AwtGraphicsConfigData adata = parent.getGraphicsConfigurationData();
awtImageData awtImage = adata.get_awtImage(0);
XVisualInfo visInfo = adata.get_awt_visInfo();
XWMHints hints = parent.getWMHints();
window = hints.get_icon_window();
if (window == 0) {
log.finest("Icon window wasn't set");
XCreateWindowParams params = getDelayedParams();
params.add(BORDER_PIXEL, Long.valueOf(XToolkit.getAwtDefaultFg()));
params.add(BACKGROUND_PIXMAP, iconPixmap);
params.add(COLORMAP, adata.get_awt_cmap());
params.add(DEPTH, awtImage.get_Depth());
params.add(VISUAL_CLASS, (int)XConstants.InputOutput);
params.add(VISUAL, visInfo.get_visual());
params.add(VALUE_MASK, XConstants.CWBorderPixel | XConstants.CWColormap | XConstants.CWBackPixmap);
params.add(PARENT_WINDOW, XlibWrapper.RootWindow(XToolkit.getDisplay(), visInfo.get_screen()));
params.add(BOUNDS, new Rectangle(0, 0, iconWidth, iconHeight));
params.remove(DELAYED);
init(params);
if (getWindow() == 0) {
log.finest("Can't create new icon window");
} else {
log.finest("Created new icon window");
}
}
if (getWindow() != 0) {
XlibWrapper.XSetWindowBackgroundPixmap(XToolkit.getDisplay(), getWindow(), iconPixmap);
XlibWrapper.XClearWindow(XToolkit.getDisplay(), getWindow());
}
// Provide both pixmap and window, WM or Taskbar will use the one they find more appropriate
long newFlags = hints.get_flags() | XUtilConstants.IconPixmapHint | XUtilConstants.IconMaskHint;
if (getWindow() != 0) {
newFlags |= XUtilConstants.IconWindowHint;
}
hints.set_flags(newFlags);
hints.set_icon_pixmap(iconPixmap);
hints.set_icon_mask(iconMask);
hints.set_icon_window(getWindow());
XlibWrapper.XSetWMHints(XToolkit.getDisplay(), parent.getShell(), hints.pData);
log.finest("Set icon window hint");
} finally {
XToolkit.awtUnlock();
}
}
static int paddedwidth(int number, int boundary)
{
return (((number) + ((boundary) - 1)) & (~((boundary) - 1)));
}
}
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