public ColorPickerHueGridViewController()
: base()
{
_colors = new List <UIColor>();
for (var i = 0; i < 12; i++)
{
var hue = (float)(i * 30f / 360f);
var colorCount = DisplayHelper.Is4InchDisplay() ? 32 : 24;
for (var j = 0; j < colorCount; j++)
{
var row = j / 4;
var column = j % 4;
var saturation = (float)column * 0.25f + 0.25f;
var luminosity = 1f - (float)row * 0.12f;
var color = UIColor.FromHSBA(hue, saturation, luminosity, 1f);
_colors.Add(color);
}
}
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
this.View.BackgroundColor = UIColor.Clear;
_colorBarView = new UIImageView(new RectangleF(10f, 10f, 300f, 30f))
{
Image = new UIImage("*****@*****.**")
};
this.View.AddSubview(_colorBarView);
_paletteView = new UIScrollView(new RectangleF(0, 50f, 320f, this.View.Frame.Height - 120f))
{
BackgroundColor = UIColor.Clear,
Bounces = true,
AlwaysBounceHorizontal = true,
AlwaysBounceVertical = false,
PagingEnabled = true
};
this.View.AddSubview(_paletteView);
var layer = new CALayer
{
Frame = new RectangleF(130f, 16f, 100f, 40f),
CornerRadius = 6f,
ShadowColor = UIColor.Black.CGColor,
ShadowOffset = new SizeF(0f, 2f),
ShadowOpacity = 0.8f
};
_paletteView.Layer.AddSublayer(layer);
var index = 0;
for (var i = 0; i < 12; i++)
{
var colorCount = DisplayHelper.Is4InchDisplay() ? 32 : 24;
for (var j = 0; j < colorCount && index < _colors.Count; j++)
{
var colorIndex = index++;
layer = new CALayer
{
Name = $"Color_{colorIndex}",
CornerRadius = 6f,
BackgroundColor = _colors[colorIndex].CGColor
};
var column = j % 4;
var row = j / 4;
layer.Frame = new RectangleF(i * 320 + 8 + (column * 78), 8 + row * 48, 70f, 40f);
LayerHelper.SetupShadow(layer);
_paletteView.Layer.AddSublayer(layer);
}
}
_paletteView.ContentSize = new SizeF(3840f, 296f);
var colorRecognizer = new UITapGestureRecognizer(ColorGridTapped);
_paletteView.AddGestureRecognizer(colorRecognizer);
_colorBarView.UserInteractionEnabled = true;
var barRecognizer = new UITapGestureRecognizer(ColorBarTapped);
_colorBarView.AddGestureRecognizer(barRecognizer);
}
private void SetSliders()
{
var y = DisplayHelper.Is4InchDisplay() ? 40f : 35f;
var sliderSize = new SizeF(320f - 135f, 20f);
var sliderX = 55f;
_sliderR = new UISlider(new RectangleF(new PointF(sliderX, 270f), sliderSize))
{
MaxValue = 255,
MinValue = 0,
Value = 255
};
_sliderR.ValueChanged += Slider_ValueChanged;
this.View.AddSubview(_sliderR);
_sliderG = new UISlider(new RectangleF(new PointF(sliderX, 270f + y), sliderSize))
{
MaxValue = 255,
MinValue = 0
};
_sliderG.ValueChanged += Slider_ValueChanged;
this.View.AddSubview(_sliderG);
_sliderB = new UISlider(new RectangleF(new PointF(sliderX, 270f + (y * 2)), sliderSize))
{
MaxValue = 255,
MinValue = 0
};
_sliderB.ValueChanged += Slider_ValueChanged;
this.View.AddSubview(_sliderB);
var labelX = 40f;
var labelSize = new SizeF(20f, 20f);
var labelR = new UILabel(new RectangleF(new PointF(labelX, _sliderR.Frame.Y), labelSize))
{
Text = "R",
TextColor = UIColor.White
};
this.View.AddSubview(labelR);
var labelG = new UILabel(new RectangleF(new PointF(labelX, _sliderG.Frame.Y), labelSize))
{
Text = "G",
TextColor = UIColor.White
};
this.View.AddSubview(labelG);
var labelB = new UILabel(new RectangleF(new PointF(labelX, _sliderB.Frame.Y), labelSize))
{
Text = "B",
TextColor = UIColor.White
};
this.View.AddSubview(labelB);
var labelValueX = sliderSize.Width + 65f;
var labelValueSize = new SizeF(40f, 20f);
_labelRValue = new UILabel(new RectangleF(new PointF(labelValueX, _sliderR.Frame.Y), labelValueSize))
{
Text = "255",
TextColor = UIColor.White
};
this.View.AddSubview(_labelRValue);
_labelGValue = new UILabel(new RectangleF(new PointF(labelValueX, _sliderG.Frame.Y), labelValueSize))
{
Text = "0",
TextColor = UIColor.White
};
this.View.AddSubview(_labelGValue);
_labelBValue = new UILabel(new RectangleF(new PointF(labelValueX, _sliderB.Frame.Y), labelValueSize))
{
Text = "0",
TextColor = UIColor.White
};
this.View.AddSubview(_labelBValue);
}