internal void UpdatePicture(string imgData, List <Dictionary <string, object> > coordIndexList)
{
var picture = BinaryToBitmap(imgData);
if (picture != null)
{
image.SetImageBitmap(picture);
}
if (coordIndexList == null && coordIndexList.Count == 0)
{
return;
}
for (int i = 0; i < coordIndexList.Count; i++)
{
var x = Convert.ToInt32(coordIndexList[i]["X"]);
var y = Convert.ToInt32(coordIndexList[i]["Y"]);
var control = new Button(zoomLayout.Context);
var param = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WrapContent, ViewGroup.LayoutParams.WrapContent);
param.SetMargins(x, y, 0, 0);
param.Width = DpToPx(30, this.Context);
param.Height = DpToPx(30, this.Context);
control.LayoutParameters = param;
control.SetBackgroundColor(Color.Black);
control.Text = coordIndexList[i]["Index"].ToString();
control.SetTextColor(Color.White);
zoomLayout.AddView(control);
}
}
public virtual Com.Zhy.Adapter.Abslistview.ViewHolder SetImageBitmap(int viewId,
Android.Graphics.Bitmap bitmap)
{
Android.Widget.ImageView view = GetView <ImageView>(viewId);
view.SetImageBitmap(bitmap);
return(this);
}
async protected override void OnElementChanged(ElementChangedEventArgs <ImageControl> e)
{
base.OnElementChanged(e);
m_control = e.NewElement;
if (e.OldElement == null)
{
var nativeControl = new Android.Widget.FrameLayout(Context);
nativeControl.LayoutParameters = new FrameLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent);
nativeControl.SetBackgroundColor(m_control.BackgroundColor.ToAndroid());
m_iconImageView = new Android.Widget.ImageView(Context);
m_iconImageView.LayoutParameters = new FrameLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent);
nativeControl.AddView(m_iconImageView);
m_iconBitmap = await GetBitmapAsync(m_control.ImageUrl);
if (m_iconBitmap != null)
{
m_iconImageView.SetImageBitmap(m_iconBitmap);
}
SetNativeControl(nativeControl);
}
else
{
if (m_control.ImageUrl != e.OldElement.ImageUrl)
{
m_iconBitmap = await GetBitmapAsync(m_control.ImageUrl);
if (m_iconBitmap != null)
{
m_iconImageView.SetImageBitmap(m_iconBitmap);
}
}
}
}
/// <summary>
/// Modifies the view before adding it to the gridview.
/// </summary>
protected override void InvokeCallback(string url, Android.Widget.ImageView iv, Android.Graphics.Bitmap bitmap, AjaxStatus status)
{
//imageViewOriginial = iv;
iv.LayoutParameters = new RelativeLayout.LayoutParams(WindowManagerLayoutParams.MatchParent, _width);
iv.SetScaleType(Android.Widget.ImageView.ScaleType.FitXy);
//iv.SetPadding (2, 2, 2, 2);
//Matrix used to crop image
Matrix matrix = new Matrix();
matrix.PostScale(0.5f, 0.5f);
int size = _bm.Width;
if (size >= 40)
{
size = 40;
}
iv.SetImageBitmap(global::Android.Graphics.Bitmap.CreateBitmap(_bm, 0, 0, size, size, matrix, true));
iv = null;
_bm.Recycle();
}
