protected override void OnAttached()
{
SeekBar nativeSeekBar = Control as SeekBar;
Slider formsSlider = Element as Slider;
// make the thumb image invisible if the user hasn't previously changed the slider's value
if (!_userHasChangedSliderValue)
{
_visibleThumbDrawable = nativeSeekBar.Thumb;
nativeSeekBar.SetThumb(new ColorDrawable(global::Android.Graphics.Color.Transparent));
}
nativeSeekBar.ProgressChanged += (sender, e) =>
{
// make the thumb image visible if we haven't already
if (!_userHasChangedSliderValue)
{
nativeSeekBar.SetThumb(_visibleThumbDrawable);
_userHasChangedSliderValue = true;
}
// set the value on the forms slider control. note that SeekBars have a fixed minimum (0) and
// a variable maximum. rescale the SeekBar's value to be in the range desired for the forms control.
double percent = nativeSeekBar.Progress / (double)nativeSeekBar.Max;
formsSlider.Value = formsSlider.Minimum + (percent * (formsSlider.Maximum - formsSlider.Minimum));
};
}
protected override void OnElementChanged(ElementChangedEventArgs <Xamarin.Forms.Slider> e)
{
base.OnElementChanged(e);
if (e.OldElement == null)
{
_model = e.NewElement;
var seekbarLayout = LayoutInflater.From(Context).Inflate(Resource.Layout.Seekbar, null);
_seekbar = (SeekBar)seekbarLayout.FindViewById(Resource.Id.seekbar);
_seekbar.Max = (int)_model.Maximum;
_seekbar.Progress = (int)_model.Value;
_seekbar.SetThumb(new ColorDrawable {
Alpha = 0
});
SetNativeControl(_seekbar);
e.NewElement.SizeChanged += OnSizeChanged;
}
}
public void OnDetachedIfNotDisposed()
{
if (notSupported)
{
return;
}
_seekbar.ProgressDrawable = _orgProgress;
_seekbar.SetThumb(_orgThumb);
}
public override void InitTheme()
{
lblEventsMax.SetTextColor(rootActivity.GetTextColorByTheme());
lblEventsDuration.SetTextColor(rootActivity.GetTextColorByTheme());
lblDiskStatus.SetTextColor(rootActivity.GetTextColorByTheme());
lblTheme.SetTextColor(rootActivity.GetTextColorByTheme());
lblServerConnection.SetTextColor(rootActivity.GetTextColorByTheme());
lblEventsMaxValue.SetTextColor(rootActivity.GetToggleTextColorByTheme(true));
lblEventsDurationValue.SetTextColor(rootActivity.GetToggleTextColorByTheme(true));
lblDiskUsageValue.SetTextColor(rootActivity.GetToggleTextColorByTheme(true));
lblServerIP.SetTextColor(rootActivity.GetTextColorByTheme(false));
lblPort.SetTextColor(rootActivity.GetTextColorByTheme(false));
lblPassword.SetTextColor(rootActivity.GetTextColorByTheme(false));
bgEditEventsMax.SetImageResource(rootActivity.GetImageByTheme(FN_BG_TEXT_SLIDER));
bgEditEventsDuration.SetImageResource(rootActivity.GetImageByTheme(FN_BG_TEXT_SLIDER));
bgEditDiskUsage.SetImageResource(rootActivity.GetImageByTheme(FN_BG_TEXT_SLIDER));
bgEditServerIP.SetImageResource(rootActivity.GetImageByTheme(FN_BG_TEXT_SETTINGS));
bgEditPort.SetImageResource(rootActivity.GetImageByTheme(FN_BG_TEXT_SETTINGS));
bgEditPassword.SetImageResource(rootActivity.GetImageByTheme(FN_BG_TEXT_SETTINGS));
txtServerIP.SetTextColor(rootActivity.GetToggleTextColorByTheme(true));
txtPort.SetTextColor(rootActivity.GetToggleTextColorByTheme(true));
txtPassword.SetTextColor(rootActivity.GetToggleTextColorByTheme(true));
btnScanQR.SetImageResource(rootActivity.GetImageByTheme(FN_BG_BTN_SCAN_QR_SETTINGS));
viewLineSeperator1.SetBackgroundColor(rootActivity.GetLineSeperatorColorByTheme());
viewLineSeperator2.SetBackgroundColor(rootActivity.GetLineSeperatorColorByTheme());
viewLineSeperator3.SetBackgroundColor(rootActivity.GetLineSeperatorColorByTheme());
viewLineSeperator4.SetBackgroundColor(rootActivity.GetLineSeperatorColorByTheme());
var progressResource = AppSettings.CurrentTheme == TYPE_THEME.DARK ? Resource.Drawable.item_seekBar_dark : Resource.Drawable.item_seekBar_light;
sliderEventsMax.ProgressDrawable = Resources.GetDrawable(progressResource);
sliderEventsDuration.ProgressDrawable = Resources.GetDrawable(progressResource);
sliderDiskStatus.ProgressDrawable = Resources.GetDrawable(progressResource);
var thumbResource = AppSettings.CurrentTheme == TYPE_THEME.DARK ? Resource.Drawable.item_seekBarThumb_dark : Resource.Drawable.item_seekBarThumb_light;
sliderEventsMax.SetThumb(Resources.GetDrawable(thumbResource));
sliderEventsDuration.SetThumb(Resources.GetDrawable(thumbResource));
}
public static async Task UpdateThumbImageSourceAsync(this SeekBar seekBar, ISlider slider, IImageSourceServiceProvider provider, Drawable?defaultThumb)
{
var context = seekBar.Context;
if (context == null)
{
return;
}
var thumbImageSource = slider.ThumbImageSource;
if (thumbImageSource != null)
{
var service = provider.GetRequiredImageSourceService(thumbImageSource);
var result = await service.GetDrawableAsync(thumbImageSource, context);
Drawable?thumbDrawable = result?.Value;
seekBar.SetThumb(thumbDrawable ?? defaultThumb);
}
}
public static void SetTheme(SeekBar seekBar, FlatTheme theme)
{
// setting thumb
var thumb = new PaintDrawable(theme.DarkAccentColor);
thumb.SetCornerRadius(15);
thumb.SetIntrinsicWidth(30);
thumb.SetIntrinsicHeight(30);
seekBar.SetThumb(thumb);
// progress
var progress = new PaintDrawable(theme.BackgroundColor);
progress.SetCornerRadius(10);
progress.SetIntrinsicHeight(10);
progress.SetIntrinsicWidth(5);
progress.SetDither(true);
var progressClip = new ClipDrawable(progress, GravityFlags.Left, ClipDrawableOrientation.Horizontal);
// secondary progress
var secondary = new PaintDrawable(theme.LightAccentColor);
secondary.SetCornerRadius(10);
secondary.SetIntrinsicHeight(10);
var secondaryProgressClip = new ClipDrawable(secondary, GravityFlags.Left, ClipDrawableOrientation.Horizontal);
// background
PaintDrawable background = new PaintDrawable(theme.VeryLightAccentColor);
background.SetCornerRadius(10);
background.SetIntrinsicHeight(10);
// applying drawable
LayerDrawable ld = (LayerDrawable)seekBar.ProgressDrawable;
ld.SetDrawableByLayerId(Android.Resource.Id.Background, background);
ld.SetDrawableByLayerId(Android.Resource.Id.Progress, progressClip);
ld.SetDrawableByLayerId(Android.Resource.Id.SecondaryProgress, secondaryProgressClip);
}
public AlterColorSlider(SeekBar seekbar, Element element)
{
_seekbar = seekbar;
_element = element;
_orgProgress = _seekbar.ProgressDrawable.Current as LayerDrawable;
if (_orgProgress == null)
{
notSupported = true;
return;
}
_progress = (LayerDrawable)(_seekbar.ProgressDrawable.Current.GetConstantState().NewDrawable());
_orgProgressBackground = _seekbar.ProgressBackgroundTintList;
_orgThumb = _seekbar.Thumb;
_thumb = _seekbar.Thumb.GetConstantState().NewDrawable();
_seekbar.ProgressDrawable = _progress;
_seekbar.SetThumb(_thumb);
}
public static void SetTint(SeekBar seekBar, Color color)
{
ColorStateList s1 = ColorStateList.ValueOf(color);
if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
{
seekBar.ThumbTintList = s1;
seekBar.ProgressTintList = s1;
}
else if (Build.VERSION.SdkInt > BuildVersionCodes.GingerbreadMr1)
{
Drawable progressDrawable = DrawableCompat.Wrap(seekBar.ProgressDrawable);
seekBar.ProgressDrawable = progressDrawable;
DrawableCompat.SetTintList(progressDrawable, s1);
if (Build.VERSION.SdkInt >= BuildVersionCodes.JellyBean)
{
Drawable thumbDrawable = DrawableCompat.Wrap(seekBar.Thumb);
DrawableCompat.SetTintList(thumbDrawable, s1);
seekBar.SetThumb(thumbDrawable);
}
}
else
{
PorterDuff.Mode mode = PorterDuff.Mode.SrcIn;
if (Build.VERSION.SdkInt <= BuildVersionCodes.GingerbreadMr1)
{
mode = PorterDuff.Mode.Multiply;
}
if (seekBar.IndeterminateDrawable != null)
{
seekBar.IndeterminateDrawable.SetColorFilter(color, mode);
}
if (seekBar.ProgressDrawable != null)
{
seekBar.ProgressDrawable.SetColorFilter(color, mode);
}
}
}
