public UICheckbox() : base()
{
this.falseImage = UIImageCache.GetUIImage("Images/checkbox.off.png");
this.trueImage = UIImageCache.GetUIImage("Images/checkbox.on.png");
this.Image = falseImage;
this.Value = false;
}
public override UITableViewCell GetCell(UITableView tv)
{
// always create a new cell instead of dequeuing a proper cell - this is because
// each ButtonListElement may have a different number of buttons and so will have different
// subviews - therefore not recyclable
var cell = new UITableViewCell(UITableViewCellStyle.Default, "ButtonListElementCell");
cell.Accessory = UITableViewCellAccessory.None;
cell.SelectionStyle = UITableViewCellSelectionStyle.None;
if (App.ViewModel.Theme == null)
{
cell.BackgroundColor = UIColor.FromPatternImage(UIImageCache.GetUIImage("Images/background.png"));
}
else
{
cell.BackgroundColor = UIColorHelper.FromString(App.ViewModel.Theme.PageBackground);
}
// if no child buttons, return a blank cell
if (Buttons.Count == 0)
{
return(cell);
}
float margin = Margin ?? defaultMargin;
float spacing = margin > minSpacing ? margin : minSpacing;
// compute button width:
// [margin] { [button] { [buttonspacing] [ button] }* [margin] }
// the total available width is the bounds minus the margins and button spacing (minus 20 fudge factor
// since CocoaTouch seems to pad the cell by 10 pixels on each side)
// divide this available width by the number of buttons and deduct the margin
// to get the button width
float availableWidth = cell.Bounds.Width - 20f - 2 * margin - (Buttons.Count - 1) * spacing;
float buttonWidth = Convert.ToSingle(Math.Round(availableWidth / Buttons.Count));
float buttonHeight = (cell.Bounds.Height) - 2 * margin;
int x = 0;
foreach (var btn in Buttons)
{
UIButton button = UIButton.FromType(UIButtonType.RoundedRect);
button.Frame = new RectangleF(margin + x * (buttonWidth + spacing), margin, buttonWidth, buttonHeight);
button.SetTitle(btn.Caption, UIControlState.Normal);
if (btn.Background != null)
{
// set the background image, and also change the font color to white
button.SetBackgroundImage(UIImageCache.GetUIImage(btn.Background), UIControlState.Normal);
button.SetTitleColor(btn.TextColor ?? UIColor.White, UIControlState.Normal);
button.Font = btn.Font ?? UIFont.BoldSystemFontOfSize(17);
}
Button savedButton = btn;
if (btn.Clicked != null)
{
button.TouchUpInside += (s, e) => { savedButton.Clicked(savedButton, e); };
}
// retain a reference to the button (otherwise it somehow falls out of scope and gets GC'd
// causing a SIGSEGV when the event handler is invoked)
btn.ButtonReference = button;
cell.ContentView.AddSubview(button);
x++;
}
return(cell);
}