void RemoveTweetItemControl(TweetsPanelItem tic, TweetsPanelLayoutMode mode, Storyboard sb)
{
tweetControls.Remove(tic);
switch (mode)
{
case TweetsPanelLayoutMode.AddNew:
case TweetsPanelLayoutMode.Left:
case TweetsPanelLayoutMode.Relayout: // 右に押し出す
{
DoubleAnimation da = new DoubleAnimation() {
To = (double)tic.GetValue(Canvas.LeftProperty) + ActualWidth,
Duration = moveDuration,
EasingFunction = moveEasing,
};
da.Completed += (sender, e) =>
{
Children.Remove(tic);
recycleTweetControls.Add(tic);
};
Storyboard.SetTarget(da, tic);
Storyboard.SetTargetProperty(da, canvasLeftPropertyPath);
sb.Children.Add(da);
}
break;
case TweetsPanelLayoutMode.Right:
{
DoubleAnimation da = new DoubleAnimation() {
To = (double)tic.GetValue(Canvas.LeftProperty) - ActualWidth,
Duration = moveDuration,
EasingFunction = moveEasing,
};
da.Completed += (sender, e) =>
{
Children.Remove(tic);
recycleTweetControls.Add(tic);
};
Storyboard.SetTarget(da, tic);
Storyboard.SetTargetProperty(da, canvasLeftPropertyPath);
sb.Children.Add(da);
}
break;
default: // すぐ消す
Children.Remove(tic);
recycleTweetControls.Add(tic);
break;
}
}
/// <summary>
/// ツイートをレイアウトする
/// </summary>
public void LayoutTweets(TweetsPanelLayoutMode mode)
{
Panel container = (Panel)Parent;
Debug.WriteLine("cursor: {0}/{1}", TopItemIndex, Tweets.Count);
const int sideMargin = 6;
int tweetMargin = TweetMargin;
double width = container.ActualWidth - (sideMargin * 2);
double height = container.ActualHeight;
double columnWidth = Math.Floor( width / Columns);
double tweetWidth = columnWidth - tweetMargin;
double x = sideMargin;
double y = 0;
int column = 0;
TimeSpan newItemDelay = moveDuration.TimeSpan;
Duration newItemDuration = moveDuration;
Storyboard sb = new Storyboard();
var newItems = new List<TweetsPanelItem>();
switch (mode)
{
case TweetsPanelLayoutMode.Right:
TopItemIndex = Math.Min(TopItemIndex + tweetControls.Count, Tweets.Count - 1);
break;
case TweetsPanelLayoutMode.Left:
{
for (; TopItemIndex >= 0; TopItemIndex--)
{
var tweet = Tweets[TopItemIndex];
var tic = tweetControls.FirstOrDefault(c => c.Tweet == tweet);
bool newItem = false;
if (tic == null)
{
newItem = true;
tic = AddTweetItemControl();
tic.Tweet = tweet;
tic.SetValue(Canvas.WidthProperty, tweetWidth);
tic.UpdateLayout();
newItems.Add(tic);
Debug.WriteLine("newItems.Add {0} {1}", TopItemIndex, tweet.Text);
}
y += tic.ActualHeight + tweetMargin;
if (y > height)
{
y = 0;
column++;
if (column >= Columns)
{
if (newItem)
{
RemoveTweetItemControl(tic, TweetsPanelLayoutMode.None, sb);
Debug.WriteLine("newItems.Remove {0} {1}", TopItemIndex, tweet.Text);
newItems.Remove(tic);
}
TopItemIndex++;
break;
}
}
}
if (TopItemIndex < 0) TopItemIndex = 0;
column = 0;
y = 0;
}
break;
}
bool outside = false;
int index = -1;
foreach (var tweet in Tweets)
{
index++;
//if (index > 0) break; // テスト用
var tic = tweetControls.FirstOrDefault(c => c.Tweet == tweet);
if (tic != null)
{
if (outside || index < TopItemIndex)
{
RemoveTweetItemControl(tic, mode, sb);
continue;
}
}
if (index < TopItemIndex)
{
continue;
}
bool newItem = false;
if (tic == null)
{
if (outside)
{
continue;
}
newItem = true;
tic = AddTweetItemControl();
tic.Tweet = tweet;
}
// 高さ決定
if (tic.Width != tweetWidth)
{
tic.SetValue(Canvas.WidthProperty, tweetWidth);
}
tic.UpdateLayout();
tic.UpdateTime();
// 表示位置決定
if (y + tic.ActualHeight > height)
{
y = 0;
x += columnWidth;
column++;
if (column >= Columns)
{
outside = true;
RemoveTweetItemControl(tic, newItem ? TweetsPanelLayoutMode.None : mode, sb);
continue;
}
}
if (mode == TweetsPanelLayoutMode.None)
{
tic.SetValue(Canvas.LeftProperty, x);
tic.SetValue(Canvas.TopProperty, y);
}
else
{
DoubleAnimation daLeft = new DoubleAnimation() {
Duration = moveDuration,
To = x,
EasingFunction = moveEasing,
};
DoubleAnimation daTop = new DoubleAnimation() {
Duration = moveDuration,
To = y,
EasingFunction = moveEasing,
};
// 新アイテムの扱い
if (newItem)
{
switch (mode) {
case TweetsPanelLayoutMode.AddNew: // 左から入ってくる
daLeft.BeginTime = newItemDelay;
daTop.BeginTime = newItemDelay;
daLeft.Duration = newItemDuration;
daTop.Duration = newItemDuration;
tic.SetValue(Canvas.LeftProperty, -columnWidth);
tic.SetValue(Canvas.TopProperty, y);
break;
case TweetsPanelLayoutMode.Relayout: // 右から入ってくる
case TweetsPanelLayoutMode.Right:
tic.SetValue(Canvas.LeftProperty, width+x);
tic.SetValue(Canvas.TopProperty, y);
break;
case TweetsPanelLayoutMode.Left:
break;
}
}
else if (mode == TweetsPanelLayoutMode.Left && newItems.Remove(tic))
{ // 左から入ってくる
Debug.WriteLine("使った: {0} {1}", TopItemIndex, tweet.Text);
tic.SetValue(Canvas.LeftProperty, x - width);
tic.SetValue(Canvas.TopProperty, y);
}
sb.Children.Add(daLeft);
sb.Children.Add(daTop);
Storyboard.SetTarget(daLeft, tic);
Storyboard.SetTarget(daTop, tic);
Storyboard.SetTargetProperty(daLeft, canvasLeftPropertyPath);
Storyboard.SetTargetProperty(daTop, canvasTopPropertyPath);
}
y += (int)tic.ActualHeight + tweetMargin;
}
foreach (var t in newItems)
{
Debug.WriteLine("残った!!: {0}", t.Tweet.Text);
}
Width = Math.Max(x + columnWidth, container.ActualWidth);
container.UpdateLayout();
sb.Begin();
}
