//削除
public async Task Delete(PostItItem item)
{
item.DeleteFlg = true;
await _client.GetTable <PostItItem>().UpdateAsync(item);
Items.Remove(item);
}
//挿入
public async Task Insert(PostItItem item)
{
try {
await _client.GetTable <PostItItem>().InsertAsync(item);
Items.Insert(0, item);
} catch (MobileServiceInvalidOperationException e) {
//ERROR
}
}
public void Insert(int index, PostItItem item)
{
var postItView = new PostItView(item, PostItWidth);
postItView.HorizontalOptions = LayoutOptions.Start;
postItView.LongTap += i => {
if (LongTap != null)
{
LongTap(i);
}
};
_layout.Children.Insert(index, postItView);
//Androidの場合、Delayがないとスクロールできない?
Task.Delay(1).ContinueWith(t => Device.BeginInvokeOnMainThread(() => {
//一番下までスクロール
//View.Position = new Point(0, View.ContentSize.Height - View.Bounds.Height);
//一番上までスクロール
View.Position = new Point(0, 0);
}));
}
public PostItView(PostItItem item, int width)
{
_item = item;
var absoluteLayout = new AbsoluteLayout();
var margin = width / 50;
//フォントのサイズが基準値となる
var fontSize = width / 20; //フォントサイズ
const int shadow = 5; //影の幅
//文字が表示できる幅の計算
var col = width - margin * 2 - fontSize;
//必要行数
var row = (item.Text.Length * fontSize) / col + 1;
var height = (int)((row + 2) * (fontSize * 1.2) + margin * 2) + fontSize / 2;
//影（塗りつぶし）の描画
var color = Color.FromRgba(0, 0, 0, 0.2);
var turnedColor = Color.FromRgba(0, 0, 0, 0);//全透過
var shadowBox = new PostItBox(width - margin * 2, height - margin * 2, color, turnedColor);
absoluteLayout.Children.Add(shadowBox, new Point(margin + shadow, margin + shadow));
//本体（塗りつぶし）の描画
color = Color.FromRgb(255, 200, 200);
turnedColor = Color.FromRgb(255, 220, 220);
var postItBox = new PostItBox(width - margin * 2, height - margin * 2, color, turnedColor);
absoluteLayout.Children.Add(postItBox, new Point(margin, margin));
//ラベル(本文)の描画
var labelText = new Label {
Text = item.Text,
Font = Font.SystemFontOfSize(fontSize),
TextColor = Color.Black,
WidthRequest = col,
};
absoluteLayout.Children.Add(labelText, new Point(fontSize / 2 + margin, fontSize / 2 + margin));
//ラベル(日付)の描画
var labelDate = new Label {
Text = string.Format("CreateAt {0}", item.CreateAt.ToString("g")),
Font = Font.SystemFontOfSize(fontSize * 0.7),
TextColor = Color.Black,
WidthRequest = col,
};
absoluteLayout.Children.Add(labelDate, new Point(fontSize / 2 + margin, height - margin - fontSize * 1.5));
//透過ボタン(長押しを取得するため透明のボタンを置く)
var exButton = new ExButton {
WidthRequest = width,
HeightRequest = height,
};
absoluteLayout.Children.Add(exButton, new Point(0, 0));
exButton.LongTap += (sender, args) => {
if (LongTap != null)
{
LongTap(_item);
}
};
Content = absoluteLayout;
}
