Re: [platform-swt-dev] timeline/schedule

[Carolyn MacLeod <Carolyn_MacLeod@xxxxxxxxxx>]

To recap:
When you are looking at the PaintExample, look at drawing a solid-filled 
rectangle. If your users are just resizing a date, this may be what you 
want.
For tearing off a date and moving it to a different location or a 
different timeline, use a borderless shell (or a tracker if you just want 
them to drag an outline).
If you want your users to drag from a timeline and drop onto another 
application (i.e. drop text describing a date range into Notepad) then you 
need to use drag & drop.
(There are lots of drag & drop snippets here: 
http://www.eclipse.org/swt/snippets/#dnd and there's also the DNDExample).
HTH,
Carolyn






Re: [platform-swt-dev] timeline/schedule

Carolyn MacLeod 
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Eclipse Platform SWT component developers list. 
04/10/2008 12:20 AM


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If you want complete control over the look and feel of your timeline, you 
probably want to draw it all yourself on a Canvas.
You'll need to add events for painting & resize, events for handling 
traversal and other key events, drag & drop handling, etc.

There are a couple of SWT graphics examples that you might find useful.
One is called PaintExample (which shows how to do rubber-band line drawing 

- might be useful), and one is called GraphicsExample (lots of animations 
and moving lines <grin>).
You can see how to download and run both of these examples here: 
http://www.eclipse.org/swt/examples.php

Also, depending on how you want the date line to look when it is being 
dragged, you might find Tracker interesting:
http://www.eclipse.org/swt/snippets/#tracker

Or maybe you prefer to have your users drag around a borderless shell 
containing their selected date range, something like this:

import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class ShellNoTrimDrag {
public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display, SWT.NO_TRIM | SWT.ON_TOP);
        shell.setBackground(display.getSystemColor(SWT.COLOR_RED));
        shell.setSize(200, 100);
        Listener listener = new Listener() {
                Point origin;
                public void handleEvent(Event e) {
                        switch (e.type) {
                                case SWT.MouseDown:
                                        origin = new Point(e.x, e.y);
                                        break;
                                case SWT.MouseUp:
                                        origin = null;
                                        shell.close();
                                        break;
                                case SWT.MouseMove:
                                        if (origin != null) {
                                                Point p = 
display.map(shell, null, e.x, e.y);
                                                shell.setLocation(p.x - 
origin.x, p.y - origin.y);
                                        }
                                        break;
                        }
                }
        };
        shell.addListener(SWT.MouseDown, listener);
        shell.addListener(SWT.MouseUp, listener);
        shell.addListener(SWT.MouseMove, listener);
        shell.open();
        while (!shell.isDisposed()) {
                if (!display.readAndDispatch())
                        display.sleep();
        }
        display.dispose();
}
}

Hope this helps,
Carolyn






[platform-swt-dev] timeline/schedule

Javier Godinez 
to:
platform-swt-dev
04/09/2008 09:38 PM


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Hey guys/gals,

I am trying to build a timeline/schedule application where one can
choose a start and end date and populate the timeline with events of
different types. The events should be draggable as to extend the time
interval as well as to shift the dates (move both start and end
dates). I am just wondering which widget/widgets would be the best to
use. I am thinking I can use some sort of canvas? Does anyone know
anything that has similar functionality? Here is an image of what I'm
talking about: http://www.flickr.com/photos/25490294@N02/2401496683/


Thanks,
Javier Godinez
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