Re: increasing height during back to front transition

stretcher.>

stretcher.stretch();

} else {

showPrefs();

}

function showPrefs () {

if (window.widget) {

window.widget.prepareForTransition("ToBack");

}

document.getElementById("front").style.display = "none";

document.getElementById("back").style.display = "block";

if (window.widget) {

setTimeout("window.widget.performTransition()", 0);

}

When going back to the front, you can do a delayed "shrink" that will go back to the appropriate front height after the front transition is complete, like below. This is a little sketchy because it assumes a specific time interval for the transition to be performed. There is already an enhancement request for a "transitionFinished" notification which would make this less sketchy.

function goToFront () {

if (window.widget) {

window.widget.prepareForTransition("ToFront");

}

document.getElementById("back").style.display = "none";

document.getElementById("front").style.display = "block";

var stretcherTimeout = 0;

if (window.widget) {

setTimeout("window.widget.performTransition();", 0);

stretcherTimeout = 800; // give some time for the transition

}

if (stretcher. showPrefs && stretcher.isStretched()) {

// We stretched in order to show the prefs; shrink back when the front is shown

stretcher.>

setTimeout("stretcher.stretch();", stretcherTimeout);

}

----------------------------------------------

Matt Drance

DTS Engineer

Java - Dashboard - Address Book

email@hidden

On Nov 4, 2005, at 2:09 PM, Chuck Soper wrote:

This message is a little long - feel free to just read the last paragraph.

I have a widget has a variable height on the front and a fixed height for the backside. When the front is taller than the back, I have a problem flipping the widget from back to front.

It doesn't appear to be possible to increase the height of the widget before preparing or performing the transition from back to front. Because of this, the flip transition is not smooth at all. I see the first half of the back to front transition animation then the front suddenly appears.

The work-around to this problem is to use the same height for the front and the backside whenever the front is taller than the back. This is the approach that the Stocks widget takes. The purpose of the resizedWhenFlippedOver boolean in Stocks.js is to remember when the front is shorter than the back otherwise the height of the backside is not resized during front to back transitions. This can be verified by doing the following:
- use seven or more stock symbols.
- flip the Stocks to its backside.
- mouse down on the widget and deactivate the dashboard to bring the widget to the desktop (you need to have debugmode turned on).
- Capture the window using Grab.
Notice that the height of the backside graphic equals the height of the front side.

The reason that I don't want to use this work-around is because I need to have backside elements that are offset from the bottom of the widget not the top.

Is it possible to increase the height of the widget during back to front transition and have smooth animation of the flip? The fact that the Stocks widget uses a special case to avoid that scenario suggests that this is not possible. Does anyone know otherwise? If not, I can file a bug report.

Chuck
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References:
	>increasing height during back to front transition (From: Chuck Soper <email@hidden>)