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Re: [platform-swt-dev] Cannot layout new widgets on a non rectangular shell
|
You can place a Composite into a ScrolledComposite, this works for me.
Do you need
to be able to resize the ScrolledComposite? But the shell (main window)
itself is fixed since it is based on
a transparent image correct (or do you create those images on the fly
and need the window to
reflect changes done to the image?)?
Could you please explain in more detail?
/nick
PS: I had problems to use multiple shells within an application. You
might want to avoid
this.
Abhishek Misra wrote:
Hi Carolyn,
I was trying to create a custom widget where the shell
could be created from a transparent image and i could at the very
minimum layout a Composite on a ScrolledComposite which will be on the
shell. I have so far been unable to accomplish the same probably
because of the fact that Scrolled composite is not fixed in size. Any
insights what is the best way to this?
Thanks,
abhi
On 4/2/07, *Carolyn MacLeod* <Carolyn_MacLeod@xxxxxxxxxx
<mailto:Carolyn_MacLeod@xxxxxxxxxx>> wrote:
Hi, Abhishek,
I think it would be easier in this case to just draw your label
text on
the shell instead of using a control.
For example, delete the Composite and CLabel code, and add
something like
the following to the Paint event, right after the drawImage:
e.gc.drawString("Hello there", imageData.x + 10,
imageData.y, true
);
Also, please note that CLabel does not support SWT.WRAP style.
Nick,
Please use SWT.NONE instead of SWT.NO <http://SWT.NO> when
creating a Composite or Button
with none of their style bits set.
Hope this helps,
Carolyn
nick <nick@xxxxxxxxxxxxxxxx <mailto:nick@xxxxxxxxxxxxxxxx>>
Sent by: platform-swt-dev-bounces@xxxxxxxxxxx
<mailto:platform-swt-dev-bounces@xxxxxxxxxxx>
04/02/2007 08:40 PM
Please respond to
"Eclipse Platform SWT component developers list."
<platform-swt-dev@xxxxxxxxxxx <mailto:platform-swt-dev@xxxxxxxxxxx>>
To
"Eclipse Platform SWT component developers list."
<platform-swt-dev@xxxxxxxxxxx <mailto:platform-swt-dev@xxxxxxxxxxx>>
cc
Subject
Re: [platform-swt-dev] Cannot layout new widgets on a non rectangular
shell
I don't think that this is related to the non-rectangular shape
of the
shell. Looks
more like a layout problem.
replace
-----------------------
final Composite comp = new Composite(shell, SWT.NONE);
comp.setBackgroundMode(SWT.INHERIT_FORCE);
GridLayout layout = new GridLayout(1, false);
.
.
-----------------------
with
-----------------------
Composite composite = new Composite(shell, SWT.NO <http://SWT.NO>);
composite.setLayout(new FillLayout());
Button button1 = new Button(shell, SWT.NO
<http://SWT.NO>);
button1.setLocation(5, 5);
button1.setSize(150, 20);
button1.setText("hello");
-----------------------
and the button will show up
/nick
Abhishek Misra wrote:
> Created from snippet 219.
>
http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet219.java?view=co
<http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet219.java?view=co>
> <
http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet219.java?view=co
<http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet219.java?view=co>
>
>
> I changed the image in the above snippet to a bigger 500*200 image
> which is transparent and use that.
>
> I am trying to create a new composite on the shell created in above
> step and put a label on it, but it doesn't work. All that shows
up is
> shell with the image.
>
> final Display display = new Display ();
> final Image image = ImageManager.getImage
("info_window.png");
> final Shell shell = new Shell (display, SWT.NO_TRIM);
> Region region = new Region();
> final ImageData imageData = image.getImageData();
> if ( imageData.alphaData != null) {
> Rectangle pixel = new Rectangle(0, 0, 1, 1);
> for (int y = 0; y < imageData.height; y++) {
> for (int x = 0; x < imageData.width ; x++) {
> if (imageData.getAlpha(x, y) == 255) {
> pixel.x = imageData.x + x;
> pixel.y = imageData.y + y;
> region.add(pixel);
> }
> }
> }
> } else {
> ImageData mask = imageData.getTransparencyMask();
> Rectangle pixel = new Rectangle(0, 0, 1, 1);
> for (int y = 0; y < mask.height; y++) {
> for (int x = 0; x < mask.width; x++) {
> if (mask.getPixel(x, y) != 0) {
> pixel.x = imageData.x + x;
> pixel.y = imageData.y + y;
> region.add(pixel);
> }
> }
> }
> }
> shell.setRegion(region);
>
> final Composite comp = new Composite(shell, SWT.NONE);
> comp.setBackgroundMode(SWT.INHERIT_FORCE);
> GridLayout layout = new GridLayout(1, false);
> layout.marginRight = 10;
> comp.setLayout(layout);
> GridData data = new GridData(GridData.FILL_BOTH);
> comp.setLayoutData(data);
> CLabel label = new CLabel(comp, SWT.WRAP);
>
label.setForeground(display.getSystemColor(SWT.COLOR_BLACK));
>
> final GridData textData = new
> GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL);
> textData.horizontalIndent = 0;
> textData.verticalIndent = 0;
> label.setLayoutData(textData);
> label.setBackgroundMode(SWT.INHERIT_DEFAULT);
>
> Listener l = new Listener() {
> int startX, startY;
> public void handleEvent(Event e) {
> if (e.type == SWT.KeyDown && e.character ==
SWT.ESC) {
> shell.dispose ();
> }
> if (e.type == SWT.MouseDown && e.button == 1) {
> startX = e.x;
> startY = e.y;
> }
> if (e.type == SWT.MouseMove && (e.stateMask &
> SWT.BUTTON1) != 0) {
> Point p = shell.toDisplay(e.x, e.y);
> p.x -= startX;
> p.y -= startY;
> shell.setLocation(p);
> }
> if (e.type == SWT.Paint) {
> e.gc.drawImage(image, imageData.x, imageData.y);
> }
> }
> };
> shell.addListener(SWT.KeyDown, l);
> shell.addListener(SWT.MouseDown, l);
> shell.addListener(SWT.MouseMove, l);
> shell.addListener(SWT.Paint, l);
>
> shell.setSize(imageData.x + imageData.width, imageData.y +
> imageData.height);
> shell.layout();
> shell.open ();
> while (!shell.isDisposed ()) {
> if (!display.readAndDispatch ())
> display.sleep ();
> }
> region.dispose();
> image.dispose ();
> display.dispose ();
> }
>
> Any idea what's wrong?
>
>
>
> Thanks,
> abhi
>
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>
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>
>
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