/// <summary>
/// Sets the image source.
/// </summary>
/// <param name="targetButton">The target button.</param>
/// <param name="model">The model.</param>
private void SetImageSource(global::Android.Widget.Button targetButton, ImageButton model)
{
var packageName = Context.PackageName;
const int padding = 10;
const string resourceType = "drawable";
var resId = Resources.GetIdentifier(model.ImagePath, resourceType, packageName);
if (resId > 0)
{
var scaledDrawable = GetScaleDrawableFromResourceId(resId, GetWidth(model.ImageWidthRequest),
GetHeight(model.ImageHeightRequest));
Drawable left = null;
Drawable right = null;
Drawable top = null;
Drawable bottom = null;
targetButton.CompoundDrawablePadding = padding;
switch (model.Orientation)
{
case (ImageOrientation.ImageToLeft):
targetButton.Gravity = GravityFlags.Left | GravityFlags.CenterVertical;
left = scaledDrawable;
break;
case (ImageOrientation.ImageToRight):
targetButton.Gravity = GravityFlags.Right | GravityFlags.CenterVertical;
right = scaledDrawable;
break;
case (ImageOrientation.ImageOnTop):
top = scaledDrawable;
break;
case (ImageOrientation.ImageOnBottom):
bottom = scaledDrawable;
break;
}
targetButton.SetCompoundDrawables(left, top, right, bottom);
}
}
/// <summary>
/// Sets the image source.
/// </summary>
/// <param name="targetButton">The target button.</param>
/// <param name="model">The model.</param>
/// <returns>A <see cref="Task"/> for the awaited operation.</returns>
private async Task SetImageSourceAsync(global::Android.Widget.Button targetButton, CustomImageButton model)
{
if (targetButton == null || targetButton.Handle == IntPtr.Zero || model == null)
{
return;
}
// const int Padding = 10;
var source = model.IsEnabled ? model.Source : model.DisabledSource ?? model.Source;
using (var bitmap = await GetBitmapAsync(source).ConfigureAwait(false))
{
if (bitmap == null)
{
targetButton.SetCompoundDrawables(null, null, null, null);
}
else
{
var drawable = new BitmapDrawable(bitmap);
var tintColor = model.IsEnabled ? model.ImageTintColor : model.DisabledImageTintColor;
if (tintColor != Xamarin.Forms.Color.Transparent)
{
drawable.SetTint(tintColor.ToAndroid());
drawable.SetTintMode(PorterDuff.Mode.SrcIn);
}
using (var scaledDrawable = GetScaleDrawable(drawable, GetWidth(model.ImageWidthRequest), GetHeight(model.ImageHeightRequest)))
{
Drawable left = null;
Drawable right = null;
Drawable top = null;
Drawable bottom = null;
//System.Diagnostics.Debug.WriteLine($"SetImageSourceAsync intptr{targetButton.Handle}");
int padding = 10; // model.Padding
targetButton.CompoundDrawablePadding = RequestToPixels(padding);
switch (model.Orientation)
{
case ImageOrientation.ImageToLeft:
targetButton.Gravity = GravityFlags.Left | GravityFlags.CenterVertical;
left = scaledDrawable;
break;
case ImageOrientation.ImageToRight:
targetButton.Gravity = GravityFlags.Right | GravityFlags.CenterVertical;
right = scaledDrawable;
break;
case ImageOrientation.ImageOnTop:
targetButton.Gravity = GravityFlags.Top | GravityFlags.CenterHorizontal;
top = scaledDrawable;
break;
case ImageOrientation.ImageOnBottom:
targetButton.Gravity = GravityFlags.Bottom | GravityFlags.CenterHorizontal;
bottom = scaledDrawable;
break;
case ImageOrientation.ImageCentered:
targetButton.Gravity = GravityFlags.Center; // | GravityFlags.Fill;
top = scaledDrawable;
break;
}
targetButton.SetCompoundDrawables(left, top, right, bottom);
}
}
}
}