/// <summary>
/// Set the state for this panel
/// </summary>
private void SetState()
{
if (captionCtrl.Width >= captionCtrl.Height)
{
if (captionCtrl.Height == Height)
{
state = ExtendedPanelState.Collapsed;
}
else
{
state = ExtendedPanelState.Expanded;
}
}
else
{
if (captionCtrl.Width == Width)
{
state = ExtendedPanelState.Collapsed;
}
else
{
state = ExtendedPanelState.Expanded;
}
}
}
/// <summary>
/// Event raised for exapanding/collapsing the control
/// </summary>
/// <param name = "sender">instance of the object raising the event</param>
/// <param name = "e">instance of an object containing the event data</param>
private void CollapsingHandler(object sender, ChangeStyleEventArgs e)
{
//check to see if Anchoring needs special treatment
if (captionAlign == DirectionStyle.Right || captionAlign == DirectionStyle.Down)
{
backupAnchor = Anchor;
Anchor |= AnchorStyles.Left;
Anchor |= AnchorStyles.Top;
Anchor &= ~AnchorStyles.Right;
Anchor &= ~AnchorStyles.Bottom;
}
//create the thread for collasping/expanding the control
if (null == collapseAnimation)
{
collapseAnimation = new CollapseAnimation();
//set the events to be raised by the animation worker thread
collapseAnimation.NotifyAnimation += OnNotifyAnimationEvent;
collapseAnimation.NotifyAnimationFinished += OnNotifyAnimationFinished;
if (backupHeight == 0)
{
backupHeight = Height;
}
if (backupWidth == 0)
{
backupWidth = Width;
}
}
switch (captionAlign)
{
case DirectionStyle.Up:
if (e.Old == DirectionStyle.Up)
{
backupHeight = Height;
backupWidth = Width;
collapseAnimation.Maximum = Height;
collapseAnimation.Minimum = captionCtrl.Height;
if (animation == Animation.Yes)
{
collapseAnimation.Step = step;
}
else
{
collapseAnimation.Step = Height - captionCtrl.Height;
}
}
else
{
collapseAnimation.Maximum = backupHeight;
collapseAnimation.Minimum = captionCtrl.Height;
if (animation == Animation.Yes)
{
collapseAnimation.Step = -step;
}
else
{
collapseAnimation.Step = -(backupHeight - captionCtrl.Height);
}
}
break;
case DirectionStyle.Down:
if (e.Old == DirectionStyle.Down)
{
//have to extract caption ctrl because of the flickering involved
ChangeCaptionParent();
//save the size as will need them for expanding the control back
backupHeight = Height;
backupWidth = Width;
collapseAnimation.Maximum = Height;
collapseAnimation.Minimum = captionCtrl.Height;
if (animation == Animation.Yes)
{
collapseAnimation.Step = step;
}
else
{
collapseAnimation.Step = Height - captionCtrl.Height;
}
}
else
{
//have to extract caption ctrl because of the flickering involved
ChangeCaptionParent();
collapseAnimation.Maximum = backupHeight;
collapseAnimation.Minimum = captionCtrl.Height;
if (animation == Animation.Yes)
{
collapseAnimation.Step = -step;
}
else
{
collapseAnimation.Step = -(backupHeight - captionCtrl.Height);
}
}
break;
case DirectionStyle.Left:
if (e.Old == DirectionStyle.Left)
{
//save the size as will need them for expanding the control back
backupHeight = Height;
backupWidth = Width;
collapseAnimation.Maximum = Width;
collapseAnimation.Minimum = captionCtrl.Width;
if (animation == Animation.Yes)
{
collapseAnimation.Step = step;
}
else
{
collapseAnimation.Step = Width - captionCtrl.Width;
}
}
else
{
collapseAnimation.Maximum = backupWidth;
collapseAnimation.Minimum = captionCtrl.Width;
if (animation == Animation.Yes)
{
collapseAnimation.Step = -step;
}
else
{
collapseAnimation.Step = -(backupWidth - captionCtrl.Width);
}
}
break;
case DirectionStyle.Right:
if (e.Old == DirectionStyle.Right)
{
//have to extract caption ctrl because of the flickering involved
ChangeCaptionParent();
backupHeight = Height;
backupWidth = Width;
collapseAnimation.Maximum = Width;
collapseAnimation.Minimum = captionCtrl.Width;
if (animation == Animation.Yes)
{
collapseAnimation.Step = step;
}
else
{
collapseAnimation.Step = Width - captionCtrl.Width;
}
}
else
{
//have to extract caption ctrl because of the flickering involved
ChangeCaptionParent();
collapseAnimation.Maximum = backupWidth;
collapseAnimation.Minimum = captionCtrl.Width;
if (animation == Animation.Yes)
{
collapseAnimation.Step = -step;
}
else
{
collapseAnimation.Step = -(backupWidth - captionCtrl.Width);
}
}
break;
}
SetState();
ShowControls();
//start collapsing/expanding and set the new state
if (state == ExtendedPanelState.Collapsed)
{
state = ExtendedPanelState.Expanding;
}
else
{
if (state == ExtendedPanelState.Expanded)
{
state = ExtendedPanelState.Collapsing;
}
}
collapseAnimation.Start();
}
