public override void GetOutline(Android.Views.View view, Outline outline)
{
var inset = (int)MaterialHelper.ConvertToDp(6);
var cornerRadius = (int)MaterialHelper.ConvertToDp(_cornerRadius);
outline.SetRoundRect(inset, inset, view.Width - inset, view.Height - inset, cornerRadius);
}
private void SetButtonIcon()
{
var withIcon = !string.IsNullOrEmpty(_materialButton.Image);
_helper.UpdateHasIcon(withIcon);
if (!withIcon)
{
return;
}
var drawable = Control.GetCompoundDrawables().FirstOrDefault(s => s != null);
if (drawable == null)
{
return;
}
var drawableCopy = drawable.GetDrawableCopy();
var width = _materialButton.ButtonType == MaterialButtonType.Text ? (int)MaterialHelper.ConvertToDp(18) : (int)MaterialHelper.ConvertToDp(18 + 4);
var height = (int)MaterialHelper.ConvertToDp(18);
var left = _materialButton.ButtonType == MaterialButtonType.Text ? 0 : (int)MaterialHelper.ConvertToDp(4);
drawableCopy.SetBounds(left, 0, width, height);
drawableCopy.TintDrawable(_materialButton.TextColor.ToAndroid());
Control.SetCompoundDrawables(drawableCopy, null, null, null);
Control.CompoundDrawablePadding = 0;
}
private void UpdateStrokeColor()
{
var borderColor = _materialCard.BorderColor.IsDefault ? _materialCard.BackgroundColor : _materialCard.BorderColor;
var drawable = (GradientDrawable)this.Control.Background;
drawable.SetStroke((int)MaterialHelper.ConvertToDp(1), borderColor.ToAndroid());
}
protected override void OnElementChanged(ElementChangedEventArgs <Button> e)
{
base.OnElementChanged(e);
if (Control == null)
{
return;
}
if (e?.OldElement != null)
{
_helper.Clean();
}
if (e?.NewElement == null)
{
return;
}
_materialButton = Element as MaterialButton;
_helper = new MaterialDrawableHelper(_materialButton, Control);
_helper.UpdateDrawable();
Control.SetMinimumWidth((int)MaterialHelper.ConvertToDp(64));
Control.SetAllCaps(_materialButton != null && _materialButton.AllCaps);
SetButtonIcon();
SetTextColors();
SetTextLetterSpacing();
}
private void SetButtonIcon()
{
var withIcon = !string.IsNullOrEmpty(_materialButton.Image);
_helper.UpdateHasIcon(withIcon);
if (!withIcon)
{
return;
}
var fileName = _materialButton.Image.File.Split('.').First();
var id = this.Resources.GetIdentifier(fileName, "drawable", Material.Context.PackageName);
var width = _materialButton.ButtonType == MaterialButtonType.Text ? (int)MaterialHelper.ConvertToDp(18) : (int)MaterialHelper.ConvertToDp(18 + 4);
var height = (int)MaterialHelper.ConvertToDp(18);
var left = _materialButton.ButtonType == MaterialButtonType.Text ? 0 : (int)MaterialHelper.ConvertToDp(4);
using (var drawable = MaterialHelper.GetDrawableCopyFromResource <Drawable>(id))
{
drawable.SetBounds(left, 0, width, height);
drawable.TintDrawable(_materialButton.TextColor.ToAndroid());
this.Control.SetCompoundDrawables(drawable, null, null, null);
this.Control.CompoundDrawablePadding = 0;
}
}
private void UpdateBorderWidth()
{
if (_button.ButtonType == MaterialButtonType.Text)
{
_borderWidth = 0;
return;
}
_borderWidth = (int)MaterialHelper.ConvertToDp(_button.BorderWidth);
}
private void SetControl()
{
if (Control == null)
{
return;
}
Control.Background = new ColorDrawable(Color.Transparent.ToAndroid());
Control.SetPadding(0, 0, 0, 0);
Control.SetIncludeFontPadding(false);
Control.SetMinimumHeight((int)MaterialHelper.ConvertToDp(20));
var layoutParams = new MarginLayoutParams(Control.LayoutParameters);
layoutParams.SetMargins(0, 0, 0, 0);
Control.LayoutParameters = layoutParams;
}
private void SetControl()
{
if (this.Control == null)
{
return;
}
this.Control.Background = new ColorDrawable(Color.Transparent.ToAndroid());
this.Control.SetPadding(0, 0, 0, 0);
this.Control.SetIncludeFontPadding(false);
this.Control.SetMinimumHeight((int)MaterialHelper.ConvertToDp(20));
// This removes the 'Next' button and shows a 'Done' button when the device's orientation is in landscape.
// This prevents the crash that is caused by a `java.lang.IllegalStateException'.
// Reported here https://github.com/xamarin/Xamarin.Forms/issues/4832.
this.Control.ImeOptions = Android.Views.InputMethods.ImeAction.Done;
}
protected override void OnElementChanged(ElementChangedEventArgs <Button> e)
{
base.OnElementChanged(e);
if (e?.NewElement != null)
{
_materialButton = this.Element as MaterialButton;
_cornerRadius = MaterialHelper.ConvertToDp(_materialButton.CornerRadius);
_borderWidth = (int)MaterialHelper.ConvertToDp((int)_materialButton.BorderWidth);
this.Control.SetMinimumWidth((int)MaterialHelper.ConvertToDp(64));
this.Control.SetAllCaps(_materialButton.AllCaps);
this.SetupColors();
this.SetButtonIcon();
this.UpdateDrawable();
}
}
private void SetButtonIcon()
{
_withIcon = !string.IsNullOrEmpty(_materialButton.Image);
if (_withIcon)
{
var fileName = _materialButton.Image.File.Split('.').First();
var id = this.Resources.GetIdentifier(fileName, "drawable", Material.Context.PackageName);
var width = (int)MaterialHelper.ConvertToDp(18);
var height = (int)MaterialHelper.ConvertToDp(18);
var drawable = MaterialHelper.GetDrawableCopyFromResource <Drawable>(id);
drawable.SetBounds(0, 0, width, height);
drawable.SetTint(_materialButton.TextColor.ToAndroid());
this.Control.SetCompoundDrawables(drawable, null, null, null);
this.Control.CompoundDrawablePadding = 8;
}
}
protected override void OnElementChanged(ElementChangedEventArgs <Button> e)
{
base.OnElementChanged(e);
if (e?.OldElement != null)
{
_helper.Clean();
}
if (e?.NewElement != null)
{
_materialButton = this.Element as MaterialButton;
_helper = new MaterialDrawableHelper(_materialButton, this.Control);
_helper.UpdateDrawable();
this.Control.SetMinimumWidth((int)MaterialHelper.ConvertToDp(64));
this.Control.SetAllCaps(_materialButton.AllCaps);
this.SetButtonIcon();
this.SetTextColors();
}
}
private StateListAnimator CreateStateListAnimator()
{
if (_button.ButtonType != MaterialButtonType.Elevated || !_aView.Enabled)
{
return(null);
}
var stateListAnimator = new StateListAnimator();
var objAnimTransZEnabled = ObjectAnimator.OfFloat(_aView, "translationZ", MaterialHelper.ConvertToDp(_button.Elevation.RestingElevation))
.SetDuration(100);
objAnimTransZEnabled.StartDelay = 100;
var objAnimElevationEnabled = ObjectAnimator.OfFloat(_aView, "elevation", MaterialHelper.ConvertToDp(_button.Elevation.RestingElevation))
.SetDuration(0);
var objAnimTransZPressed = ObjectAnimator.OfFloat(_aView, "translationZ", MaterialHelper.ConvertToDp(_button.Elevation.PressedElevation))
.SetDuration(100);
var objAnimElevationPressed = ObjectAnimator.OfFloat(_aView, "elevation", MaterialHelper.ConvertToDp(_button.Elevation.RestingElevation))
.SetDuration(0);
var b = new AnimatorSet();
b.PlayTogether(objAnimTransZEnabled, objAnimElevationEnabled);
b.SetTarget(_aView);
var bb = new AnimatorSet();
bb.PlayTogether(objAnimTransZPressed, objAnimElevationPressed);
bb.SetTarget(_aView);
stateListAnimator.AddState(new[] { R.Attribute.StatePressed }, bb);
stateListAnimator.AddState(new[] { R.Attribute.StateFocused, R.Attribute.StateEnabled }, bb);
stateListAnimator.AddState(new[] { R.Attribute.StateEnabled }, b);
stateListAnimator.AddState(new[] { R.Attribute.StateFocused }, bb);
if (!(_aView is AppCompatImageButton))
{
return(stateListAnimator);
}
_aView.OutlineProvider = new MaterialOutlineProvider(_button.CornerRadius);
_aView.ClipToOutline = false;
return(stateListAnimator);
}
private void UpdateCornerRadius()
{
_cornerRadius = (int)MaterialHelper.ConvertToDp(_button.CornerRadius);
}
