/**
*
*/
package com.aelitis.azureus.ui.swt.skin;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.widgets.*;
import org.gudy.azureus2.core3.util.AERunnable;
import org.gudy.azureus2.core3.util.Constants;
import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.ui.swt.Utils;
import com.aelitis.azureus.ui.swt.utils.ImageLoader;
/**
* @author TuxPaper
* @created Jun 8, 2006
*
*/
public class SWTBGImagePainter
implements Listener
{
private static boolean DEBUG = false;
private static boolean TEST_SWT_PAINTING = Constants.isOSX;
private Rectangle lastResizeRect = new Rectangle(0, 0, 0, 0);
private final Shell shell;
private Image imgSrc;
private Image imgSrcLeft;
private Image imgSrcRight;
private Rectangle imgSrcBounds;
private Rectangle imgSrcLeftBounds;
private Rectangle imgSrcRightBounds;
private Image lastImage = null;
boolean inEvent = false;
Rectangle lastBounds = new Rectangle(0, 0, 0, 0);
Point lastShellBGSize = new Point(0, 0);
private final int tileMode;
private final Control control;
private boolean bDirty;
private SWTBGImagePainter(Control control, int tileMode) {
this.control = control;
this.shell = control.getShell();
this.tileMode = tileMode;
control.setData("BGPainter", this);
}
public SWTBGImagePainter(Control control, Image bgImage, int tileMode) {
this(control, null, null, bgImage, tileMode);
}
public SWTBGImagePainter(Control control, Image bgImageLeft,
Image bgImageRight, Image bgImage, int tileMode) {
this(control, tileMode);
setImages(bgImageLeft, bgImageRight, bgImage);
// TODO: Change layoutdata if image size changes?
if ((tileMode & SWTSkinUtils.TILE_BOTH) != SWTSkinUtils.TILE_BOTH) {
int width = SWT.DEFAULT;
int height = SWT.DEFAULT;
if (tileMode == SWTSkinUtils.TILE_Y || tileMode == SWTSkinUtils.TILE_NONE) {
width = imgSrcBounds.width + imgSrcLeftBounds.width
+ imgSrcRightBounds.width;
}
if (tileMode == SWTSkinUtils.TILE_X || tileMode == SWTSkinUtils.TILE_NONE) {
height = imgSrcBounds.height;
}
control.setLayoutData(new FormData(width, height));
}
if (bDirty) {
if (control.isVisible()) {
buildBackground(control);
}
}
if (!TEST_SWT_PAINTING) {
control.addListener(SWT.Resize, this);
control.addListener(SWT.Paint, this);
control.getShell().addListener(SWT.Show, this);
}
}
/**
* @param bgImageLeft
* @param bgImageRight
* @param bgImage
*/
public void setImage(Image bgImageLeft, Image bgImageRight, Image bgImage) {
setImages(bgImageLeft, bgImageRight, bgImage);
if (bDirty) {
Utils.execSWTThread(new AERunnable() {
public void runSupport() {
if (!control.isVisible()) {
return;
}
buildBackground(control);
}
});
}
}
private boolean imagesEqual(Image image1, Image image2) {
if (image1 == image2) {
return true;
}
if (!ImageLoader.isRealImage(image1) && !ImageLoader.isRealImage(image2)) {
return true;
}
return false;
}
private void setImages(Image bgImageLeft, Image bgImageRight, Image bgImage) {
if (imagesEqual(imgSrc, bgImage) && imagesEqual(imgSrcLeft, bgImageLeft)
&& imagesEqual(imgSrcRight, bgImageRight)) {
if (DEBUG) {
System.out.println("same");
}
return;
}
if (DEBUG) {
System.out.println("SI " + bgImageLeft + ";" + bgImageRight + ";"
+ bgImage + ";" + control.getData("SkinObject") + "/"
+ Debug.getStackTrace(true, false));
}
imgSrc = bgImage;
imgSrcBounds = imgSrc.getBounds();
lastShellBGSize = new Point(0, 0);
if (ImageLoader.isRealImage(bgImageLeft)) {
imgSrcLeft = bgImageLeft;
imgSrcLeftBounds = imgSrcLeft.getBounds();
} else {
imgSrcLeft = null;
imgSrcLeftBounds = new Rectangle(0, 0, 0, 0);
}
if (ImageLoader.isRealImage(bgImageRight)) {
imgSrcRight = bgImageRight;
imgSrcRightBounds = imgSrcRight.getBounds();
} else {
imgSrcRight = null;
imgSrcRightBounds = new Rectangle(0, 0, 0, 0);
}
if (TEST_SWT_PAINTING) {
control.removeListener(SWT.Resize, this);
control.removeListener(SWT.Paint, this);
if (imgSrcRight == null && imgSrcLeft == null
&& tileMode == SWTSkinUtils.TILE_NONE) {
control.setBackgroundImage(imgSrc);
} else {
control.addListener(SWT.Resize, this);
control.addListener(SWT.Paint, this);
bDirty = true;
}
} else {
bDirty = true;
}
}
public void buildBackground(Control control) {
if (inEvent || shell == null || shell.isDisposed() || control == null
|| control.isDisposed()) {
return;
}
//System.out.println("BB: " + control.getData("ConfigID"));
inEvent = true;
Point size = control.getSize();
if (size.x <= 0 || size.y <= 0) {
inEvent = false;
if (DEBUG) {
System.out.println("- size " + control.getData("ConfigID"));
}
Image image = new Image(shell.getDisplay(), 1, 1);
control.setBackgroundImage(image);
lastBounds = control.getBounds();
return;
}
Composite parent = control.getParent();
Image imgBG = parent.getBackgroundImage();
if (imgBG != null && imgBG.isDisposed()) {
imgBG = null;
}
Rectangle imgBGBounds = imgBG == null ? new Rectangle(0, 0, 1, 1)
: imgBG.getBounds();
Rectangle compositeArea = control.getBounds();
boolean bTileY = (tileMode & SWTSkinUtils.TILE_Y) > 0;
boolean bTileX = (tileMode & SWTSkinUtils.TILE_X) > 0;
// TODO: Can also exit early if size shrunk but position
// same and imgBGBounds same.
if (!bDirty && imgBG == null && bTileX && bTileY) {
inEvent = false;
return;
}
if (!bDirty && imgBG == null && compositeArea.width == lastBounds.width
&& compositeArea.height == lastBounds.height) {
inEvent = false;
return;
}
if (!bDirty && compositeArea.equals(lastBounds)
&& imgBGBounds.width == lastShellBGSize.x
&& imgBGBounds.height == lastShellBGSize.y) {
inEvent = false;
return;
}
if (TEST_SWT_PAINTING && !bDirty && compositeArea.width == lastBounds.width
&& compositeArea.height == lastBounds.height) {
inEvent = false;
return;
}
//control.setRedraw(false);
try {
if (DEBUG) {
System.out.println(System.currentTimeMillis() + "@"
+ Integer.toHexString(hashCode()) + "BGPain: "
+ control.getData("SkinObject") + "/" + "; image" + size + ";"
+ tileMode + ";lB=" + lastBounds + "/" + compositeArea + ";"
+ "lBG=" + lastShellBGSize + "/" + imgBGBounds.width + "x"
+ imgBGBounds.height + ";" + bDirty);
//+ "\n" + Debug.getCompressedStackTrace());
}
lastBounds = compositeArea;
lastShellBGSize = new Point(imgBGBounds.width, imgBGBounds.height);
//System.out.println(size);
//size.x = 10;
//size.y = 10;
Image newImage = new Image(shell.getDisplay(), size.x, size.y);
// GC gc = new GC(newImage);
// gc.setBackground(shell.getDisplay().getSystemColor(
// (int) (Math.random() * 16)));
// gc.fillRectangle(0, 0, size.x, size.y);
// gc.dispose();
Point ofs;
if (control.getParent() == shell) {
ofs = control.getLocation();
Rectangle clientArea = shell.getClientArea();
ofs.x += clientArea.x;
ofs.y += clientArea.y;
} else {
Point controlPos = new Point(0, 0);
if (control instanceof Composite) {
Composite composite = (Composite) control;
Rectangle compArea = composite.getClientArea();
//System.out.println("comparea=" + compArea);
controlPos.x = compArea.x;
controlPos.y = compArea.y;
}
Point locControl = control.toDisplay(controlPos.x, controlPos.y);
Rectangle clientArea = shell.getClientArea();
Point locShell = control.getParent().toDisplay(clientArea.x,
clientArea.y);
//System.out.println("locC="+ locControl + ";locS=" + locShell);
ofs = new Point(locControl.x - locShell.x, locControl.y - locShell.y);
}
ofs.x = (ofs.x % imgBGBounds.width);
ofs.y = (ofs.y % imgBGBounds.height);
GC gc = new GC(newImage);
try {
control.setBackgroundImage(null);
gc.setBackground(control.getBackground());
gc.fillRectangle(0, 0, size.x, size.y);
if (imgBG != null) {
for (int y = 0; y < size.y; y += imgBGBounds.height) {
for (int x = 0; x < size.x; x += imgBGBounds.width) {
gc.drawImage(imgBG, x - ofs.x, y - ofs.y);
}
}
}
int maxY = bTileY ? size.y : imgSrcBounds.height;
int maxX = bTileX ? size.x : imgSrcBounds.width;
int x0 = 0;
if ((tileMode & SWTSkinUtils.TILE_CENTER_X) > 0) {
x0 = (size.x - imgSrcBounds.width) / 2;
maxX += x0;
}
int y0 = 0;
if ((tileMode & SWTSkinUtils.TILE_CENTER_Y) > 0) {
y0 = (size.y - imgSrcBounds.height) / 2;
maxY += y0;
}
if (imgSrcRight != null) {
int width = imgSrcRightBounds.width;
maxX -= width;
}
if (imgSrcLeft != null) {
// TODO: Tile down
gc.drawImage(imgSrcLeft, 0, 0);
x0 += imgSrcLeftBounds.width;
}
for (int y = y0; y < maxY; y += imgSrcBounds.height) {
for (int x = x0; x < maxX; x += imgSrcBounds.width) {
if (x + imgSrcBounds.width >= maxX) {
int width = maxX - x;
gc.drawImage(imgSrc, 0, 0, width, imgSrcBounds.height, x, y,
width, imgSrcBounds.height);
} else {
gc.drawImage(imgSrc, x, y);
}
}
}
if (imgSrcRight != null) {
// TODO: Tile down
gc.drawImage(imgSrcRight, maxX, 0);
}
} finally {
gc.dispose();
}
control.setBackgroundImage(newImage);
if (lastImage != null) {
lastImage.dispose();
}
lastImage = newImage;
bDirty = false;
} finally {
//control.setRedraw(true);
//control.update();
//control.getShell().update();
// if (control instanceof Composite) {
// Control[] children = ((Composite)control).getChildren();
// ((Composite)control).layout(true, true);
// for (int i = 0; i < children.length; i++) {
// Control control2 = children[i];
// control2.redraw();
// control2.update();
// }
// }
inEvent = false;
}
}
public static void main(String[] args) {
Display display = Display.getDefault();
Shell shell = new Shell(display, SWT.DIALOG_TRIM);
shell.setLayout(new FillLayout());
Composite c = new Composite(shell, SWT.BORDER);
c.setLayout(new FillLayout());
c.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
e.gc.drawLine(0, 0, 100, 50);
}
});
Label lbl = new Label(c, SWT.NONE);
lbl.setText("text");
shell.open();
while (!shell.isDisposed()) {
if (display.readAndDispatch()) {
display.sleep();
}
}
}
public void handleEvent(final Event event) {
if (event.type == SWT.Resize) {
Control control = (Control) event.widget;
Rectangle resizeRect = control.getBounds();
if (resizeRect.equals(lastResizeRect)) {
return;
}
lastResizeRect = resizeRect;
if (DEBUG) {
System.out.println("BGPaint:HE: " + control.getData("ConfigID") + ";"
+ event + ";" + control.isVisible());
}
buildBackground(control);
} else if (event.type == SWT.Paint) {
Control control = (Control) event.widget;
if (DEBUG) {
System.out.println("BGPaint:P: " + control.getData("ConfigID") + ";"
+ event + ";" + control.isVisible());
}
if (!TEST_SWT_PAINTING) {
buildBackground(control);
}
} else if (event.type == SWT.Show) {
if (DEBUG) {
System.out.println("BGPaint:S: " + control.getData("ConfigID") + ";"
+ event + ";" + control.isVisible());
}
if (!TEST_SWT_PAINTING) {
buildBackground(control);
}
}
}
}
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