public static CGSize TPKeyboardAvoiding_calculatedContentSizeFromSubviewFrames(this UIScrollView scrollView)
{
bool wasShowingVerticalScrollIndicator = scrollView.ShowsVerticalScrollIndicator;
bool wasShowingHorizontalScrollIndicator = scrollView.ShowsHorizontalScrollIndicator;
scrollView.ShowsVerticalScrollIndicator = false;
scrollView.ShowsHorizontalScrollIndicator = false;
CGRect rect = new CGRect(0, 0, 0, 0);
foreach (var subview in scrollView.Subviews)
{
rect = CGRect.Union(rect, subview.Frame);
}
var size = rect.Size;
size.Height += kCalculatedContentPadding;
rect.Size = size;
scrollView.ShowsVerticalScrollIndicator = wasShowingVerticalScrollIndicator;
scrollView.ShowsHorizontalScrollIndicator = wasShowingHorizontalScrollIndicator;
return(rect.Size);
}
private void UpdateSelectedPosition(bool animated)
{
// Labels
this.UpdateLabelColors();
// Strip
var y = this.selectedView.Frame.Y;
var x = TabWidth * SelectedIndex + (TabWidth / 2);
var height = this.selectedView.Frame.Height;
var width = TabWidth;
if (style.SelectedStripStyle == PagerStyle.StripStyle.Rounded)
{
width -= 2 * this.style.SelectedStripMargin;
}
else if (style.SelectedStripStyle == PagerStyle.StripStyle.Dot)
{
width = this.style.SelectedStripSize;
}
x -= width / 2;
var destination = new CGRect(x, y, width, height);
if (animated && this.style.SelectedStripAnimation != PagerStyle.StripAnimation.None)
{
if (this.style.SelectedStripAnimation == PagerStyle.StripAnimation.Stretched)
{
var step = CGRect.Union(selectedView.Frame, destination);
var stepDuration = this.style.SelectedStripAnimationDuration / 2;
UIView.Animate(stepDuration, 0, UIViewAnimationOptions.CurveEaseIn, () => this.selectedView.Frame = step, () =>
{
UIView.Animate(stepDuration, 0, UIViewAnimationOptions.CurveEaseOut, () => this.selectedView.Frame = destination, () => { });
});
UIView.Animate(this.style.SelectedStripAnimationDuration, 0, UIViewAnimationOptions.CurveEaseInOut, () =>
{
this.selectedView.BackgroundColor = GetStripColor(SelectedIndex);
}, () => { });
}
else if (this.style.SelectedStripAnimation == PagerStyle.StripAnimation.Constant)
{
UIView.Animate(this.style.SelectedStripAnimationDuration, 0, UIViewAnimationOptions.CurveEaseInOut, () =>
{
this.selectedView.Frame = destination;
this.selectedView.BackgroundColor = GetStripColor(SelectedIndex);
}, () => { });
}
}
else
{
this.selectedView.Frame = destination;
this.selectedView.BackgroundColor = GetStripColor(SelectedIndex);
}
}
public override void LayoutSubviews()
{
this.layoutPopupIfNeeded();
var boundingBox = (this.popup != null ? CGRect.Union(this.Bounds, this.popup.Frame) : this.Bounds);
if (this.Bounds.Width == 0 || this.Bounds.Height == 0)
{
return;
}
if (oldBounds != null && boundingBox.Size.Equals(oldBounds?.Size))
{
return;
}
oldBounds = boundingBox;
base.LayoutSubviews();
CATransaction.Begin();
CATransaction.DisableActions = (true);
this.background.Frame = this.Bounds;
this.label.Frame = new CGRect(this.labelInset, this.labelInset, this.Bounds.Width - this.labelInset * 2, this.Bounds.Height - this.labelInset * 2);
this.displayView.Frame = boundingBox;
this.shadowView.Frame = boundingBox;
this.borderView.Frame = boundingBox;
this.underView.Frame = boundingBox;
CATransaction.Commit();
this.refreshViews();
}
public override void Draw(CGRect rect)
{
using (var context = UIGraphics.GetCurrentContext()) {
var bounds = Bounds;
//UIColor background = Enabled ? isPressed ? HighlightedColor : NormalColor : DisabledColor;
UIColor buttonColor = NormalColor; //UIColor.FromRGBA (0.00f, 0.37f, 0.89f, 1.00f);
var buttonColorRGBA = new nfloat[4];
buttonColor.GetRGBA(
out buttonColorRGBA [0],
out buttonColorRGBA [1],
out buttonColorRGBA [2],
out buttonColorRGBA [3]
);
if (isPressed)
{
// Get the Hue Saturation Brightness Alpha copy of the color
var buttonColorHSBA = new nfloat[4];
buttonColor.GetHSBA(
out buttonColorHSBA [0],
out buttonColorHSBA [1],
out buttonColorHSBA [2],
out buttonColorHSBA [3]
);
// Change the brightness to a fixed value (0.5f)
buttonColor = UIColor.FromHSBA(buttonColorHSBA [0], buttonColorHSBA [1], 0.5f, buttonColorHSBA [3]);
// Re-set the base buttonColorRGBA because everything else is relative to it
buttonColorRGBA = new nfloat[4];
buttonColor.GetRGBA(
out buttonColorRGBA [0],
out buttonColorRGBA [1],
out buttonColorRGBA [2],
out buttonColorRGBA [3]
);
}
using (var colorSpace = CGColorSpace.CreateDeviceRGB()) {
//// Abstracted Graphic Attributes
var textContent = this.Title(UIControlState.Normal); //"STOP";
var font = UIFont.SystemFontOfSize(18);
// ------------- START PAINTCODE -------------
//// Color Declarations
UIColor frameColorTop = UIColor.FromRGBA(0.20f, 0.20f, 0.20f, 1.00f);
UIColor frameShadowColor = UIColor.FromRGBA(1.00f, 1.00f, 1.00f, 0.40f);
UIColor glossyColorBottom = UIColor.FromRGBA(
(buttonColorRGBA [0] * 0.6f + 0.4f),
(buttonColorRGBA [1] * 0.6f + 0.4f),
(buttonColorRGBA [2] * 0.6f + 0.4f),
(buttonColorRGBA [3] * 0.6f + 0.4f)
);
UIColor glossyColorUp = UIColor.FromRGBA(
(buttonColorRGBA [0] * 0.2f + 0.8f),
(buttonColorRGBA [1] * 0.2f + 0.8f),
(buttonColorRGBA [2] * 0.2f + 0.8f),
(buttonColorRGBA [3] * 0.2f + 0.8f)
);
//// Gradient Declarations
var glossyGradientColors = new CGColor [] {
glossyColorUp.CGColor,
glossyColorBottom.CGColor
};
var glossyGradientLocations = new nfloat [] { 0, 1 };
var glossyGradient = new CGGradient(colorSpace, glossyGradientColors, glossyGradientLocations);
//// Shadow Declarations
var frameInnerShadow = frameShadowColor.CGColor;
var frameInnerShadowOffset = new CGSize(0, -0);
var frameInnerShadowBlurRadius = 3;
var buttonInnerShadow = UIColor.Black.CGColor;
var buttonInnerShadowOffset = new CGSize(0, -0);
var buttonInnerShadowBlurRadius = 12;
var textShadow = UIColor.Black.CGColor;
var textShadowOffset = new CGSize(0, -0);
var textShadowBlurRadius = 1;
var buttonShadow = UIColor.Black.CGColor;
var buttonShadowOffset = new CGSize(0, isPressed ? 0 : 2); // ADDED this code after PaintCode
var buttonShadowBlurRadius = isPressed ? 2 : 3; // ADDED this code after PaintCode
//// outerFrame Drawing
var outerFramePath = UIBezierPath.FromRoundedRect(new CGRect(2.5f, 1.5f, 120, 32), 8);
context.SaveState();
context.SetShadow(buttonShadowOffset, buttonShadowBlurRadius, buttonShadow);
frameColorTop.SetFill();
outerFramePath.Fill();
context.RestoreState();
UIColor.Black.SetStroke();
outerFramePath.LineWidth = 1;
outerFramePath.Stroke();
//// innerFrame Drawing
var innerFramePath = UIBezierPath.FromRoundedRect(new CGRect(5.5f, 4.5f, 114, 26), 5);
context.SaveState();
context.SetShadow(frameInnerShadowOffset, frameInnerShadowBlurRadius, frameInnerShadow);
buttonColor.SetFill();
innerFramePath.Fill();
////// innerFrame Inner Shadow
var innerFrameBorderRect = innerFramePath.Bounds;
innerFrameBorderRect.Inflate(buttonInnerShadowBlurRadius, buttonInnerShadowBlurRadius);
innerFrameBorderRect.Offset(-buttonInnerShadowOffset.Width, -buttonInnerShadowOffset.Height);
innerFrameBorderRect = CGRect.Union(innerFrameBorderRect, innerFramePath.Bounds);
innerFrameBorderRect.Inflate(1, 1);
var innerFrameNegativePath = UIBezierPath.FromRect(innerFrameBorderRect);
innerFrameNegativePath.AppendPath(innerFramePath);
innerFrameNegativePath.UsesEvenOddFillRule = true;
context.SaveState();
{
var xOffset = buttonInnerShadowOffset.Width + (float)Math.Round(innerFrameBorderRect.Width);
var yOffset = buttonInnerShadowOffset.Height;
context.SetShadow(
new CGSize(xOffset + (xOffset >= 0 ? 0.1f : -0.1f), yOffset + (yOffset >= 0 ? 0.1f : -0.1f)),
buttonInnerShadowBlurRadius,
buttonInnerShadow);
innerFramePath.AddClip();
var transform = CGAffineTransform.MakeTranslation(-(float)Math.Round(innerFrameBorderRect.Width), 0);
innerFrameNegativePath.ApplyTransform(transform);
UIColor.Gray.SetFill();
innerFrameNegativePath.Fill();
}
context.RestoreState();
context.RestoreState();
UIColor.Black.SetStroke();
innerFramePath.LineWidth = 1;
innerFramePath.Stroke();
//// Rounded Rectangle Drawing
var roundedRectanglePath = UIBezierPath.FromRoundedRect(new CGRect(8, 6, 109, 9), 4);
context.SaveState();
roundedRectanglePath.AddClip();
context.DrawLinearGradient(glossyGradient, new CGPoint(62.5f, 6), new CGPoint(62.5f, 15), 0);
context.RestoreState();
//// Text Drawing
var textRect = new CGRect(18, 6, 90, 28);
context.SaveState();
context.SetShadow(textShadowOffset, textShadowBlurRadius, textShadow);
glossyColorUp.SetFill();
// Use default button-drawn text
//new NSString(textContent).DrawString(textRect, font, UILineBreakMode.WordWrap, UITextAlignment.Center);
context.RestoreState();
// ------------- END PAINTCODE -------------
}
}
}
public override void Draw(CGRect rect)
{
using (var context = UIGraphics.GetCurrentContext()) {
var bounds = Bounds;
//UIColor background = Enabled ? isPressed ? HighlightedColor : NormalColor : DisabledColor;
UIColor buttonColor = NormalColor; //UIColor.FromRGBA (0.00f, 0.37f, 0.89f, 1.00f);
var buttonColorRGBA = new nfloat[4];
buttonColor.GetRGBA(
out buttonColorRGBA [0],
out buttonColorRGBA [1],
out buttonColorRGBA [2],
out buttonColorRGBA [3]
);
if (isPressed)
{
// Get the Hue Saturation Brightness Alpha copy of the color
var buttonColorHSBA = new nfloat[4];
buttonColor.GetHSBA(
out buttonColorHSBA [0],
out buttonColorHSBA [1],
out buttonColorHSBA [2],
out buttonColorHSBA [3]
);
// Change the brightness to a fixed value (0.5f)
buttonColor = UIColor.FromHSBA(buttonColorHSBA [0], buttonColorHSBA [1], 0.5f, buttonColorHSBA [3]);
// Re-set the base buttonColorRGBA because everything else is relative to it
buttonColorRGBA = new nfloat[4];
buttonColor.GetRGBA(
out buttonColorRGBA [0],
out buttonColorRGBA [1],
out buttonColorRGBA [2],
out buttonColorRGBA [3]
);
}
using (var colorSpace = CGColorSpace.CreateDeviceRGB()) {
// ------------- START PAINTCODE -------------
//// Color Declarations
UIColor upColorOut = UIColor.FromRGBA(0.79f, 0.79f, 0.79f, 1.00f);
UIColor bottomColorDown = UIColor.FromRGBA(0.21f, 0.21f, 0.21f, 1.00f);
UIColor upColorInner = UIColor.FromRGBA(0.17f, 0.18f, 0.20f, 1.00f);
UIColor bottomColorInner = UIColor.FromRGBA(0.98f, 0.98f, 0.99f, 1.00f);
UIColor buttonFlareUpColor = UIColor.FromRGBA(
(buttonColorRGBA [0] * 0.3f + 0.7f),
(buttonColorRGBA [1] * 0.3f + 0.7f),
(buttonColorRGBA [2] * 0.3f + 0.7f),
(buttonColorRGBA [3] * 0.3f + 0.7f)
);
UIColor buttonTopColor = UIColor.FromRGBA(
(buttonColorRGBA [0] * 0.8f),
(buttonColorRGBA [1] * 0.8f),
(buttonColorRGBA [2] * 0.8f),
(buttonColorRGBA [3] * 0.8f + 0.2f)
);
UIColor buttonBottomColor = UIColor.FromRGBA(
(buttonColorRGBA [0] * 0 + 1),
(buttonColorRGBA [1] * 0 + 1),
(buttonColorRGBA [2] * 0 + 1),
(buttonColorRGBA [3] * 0 + 1)
);
UIColor buttonFlareBottomColor = UIColor.FromRGBA(
(buttonColorRGBA [0] * 0.8f + 0.2f),
(buttonColorRGBA [1] * 0.8f + 0.2f),
(buttonColorRGBA [2] * 0.8f + 0.2f),
(buttonColorRGBA [3] * 0.8f + 0.2f)
);
UIColor flareWhite = UIColor.FromRGBA(1.00f, 1.00f, 1.00f, 0.83f);
//// Gradient Declarations
var ringGradientColors = new CGColor [] {
upColorOut.CGColor,
bottomColorDown.CGColor
};
var ringGradientLocations = new nfloat [] { 0, 1 };
var ringGradient = new CGGradient(colorSpace, ringGradientColors, ringGradientLocations);
var ringInnerGradientColors = new CGColor [] {
upColorInner.CGColor,
bottomColorInner.CGColor
};
var ringInnerGradientLocations = new nfloat [] { 0, 1 };
var ringInnerGradient = new CGGradient(colorSpace, ringInnerGradientColors, ringInnerGradientLocations);
var buttonGradientColors = new CGColor [] {
buttonBottomColor.CGColor,
buttonTopColor.CGColor
};
var buttonGradientLocations = new nfloat [] { 0, 1 };
var buttonGradient = new CGGradient(colorSpace, buttonGradientColors, buttonGradientLocations);
var overlayGradientColors = new CGColor [] {
flareWhite.CGColor,
UIColor.Clear.CGColor
};
var overlayGradientLocations = new nfloat [] { 0, 1 };
var overlayGradient = new CGGradient(colorSpace, overlayGradientColors, overlayGradientLocations);
var buttonFlareGradientColors = new CGColor [] {
buttonFlareUpColor.CGColor,
buttonFlareBottomColor.CGColor
};
var buttonFlareGradientLocations = new nfloat [] { 0, 1 };
var buttonFlareGradient = new CGGradient(colorSpace, buttonFlareGradientColors, buttonFlareGradientLocations);
//// Shadow Declarations
var buttonInnerShadow = UIColor.Black.CGColor;
var buttonInnerShadowOffset = new CGSize(0, -0);
var buttonInnerShadowBlurRadius = 5;
var buttonOuterShadow = UIColor.Black.CGColor;
var buttonOuterShadowOffset = new CGSize(0, 2);
var buttonOuterShadowBlurRadius = isPressed ? 2 : 5; // ADDED this code after PaintCode
//// outerOval Drawing
var outerOvalPath = UIBezierPath.FromOval(new CGRect(5, 5, 63, 63));
context.SaveState();
context.SetShadow(buttonOuterShadowOffset, buttonOuterShadowBlurRadius, buttonOuterShadow);
context.BeginTransparencyLayer(null);
outerOvalPath.AddClip();
context.DrawLinearGradient(ringGradient, new CGPoint(36.5f, 5), new CGPoint(36.5f, 68), 0);
context.EndTransparencyLayer();
context.RestoreState();
//// overlayOval Drawing
var overlayOvalPath = UIBezierPath.FromOval(new CGRect(5, 5, 63, 63));
context.SaveState();
overlayOvalPath.AddClip();
context.DrawRadialGradient(overlayGradient,
new CGPoint(36.5f, 12.23f), 17.75f,
new CGPoint(36.5f, 36.5f), 44.61f,
CGGradientDrawingOptions.DrawsBeforeStartLocation | CGGradientDrawingOptions.DrawsAfterEndLocation);
context.RestoreState();
//// innerOval Drawing
var innerOvalPath = UIBezierPath.FromOval(new CGRect(12, 12, 49, 49));
context.SaveState();
innerOvalPath.AddClip();
context.DrawLinearGradient(ringInnerGradient, new CGPoint(36.5f, 12), new CGPoint(36.5f, 61), 0);
context.RestoreState();
//// buttonOval Drawing
var buttonOvalPath = UIBezierPath.FromOval(new CGRect(14, 13, 46, 46));
context.SaveState();
buttonOvalPath.AddClip();
context.DrawRadialGradient(buttonGradient,
new CGPoint(37, 63.23f), 2.44f,
new CGPoint(37, 44.48f), 23.14f,
CGGradientDrawingOptions.DrawsBeforeStartLocation | CGGradientDrawingOptions.DrawsAfterEndLocation);
context.RestoreState();
////// buttonOval Inner Shadow
var buttonOvalBorderRect = buttonOvalPath.Bounds;
buttonOvalBorderRect.Inflate(buttonInnerShadowBlurRadius, buttonInnerShadowBlurRadius);
buttonOvalBorderRect.Offset(-buttonInnerShadowOffset.Width, -buttonInnerShadowOffset.Height);
buttonOvalBorderRect = CGRect.Union(buttonOvalBorderRect, buttonOvalPath.Bounds);
buttonOvalBorderRect.Inflate(1, 1);
var buttonOvalNegativePath = UIBezierPath.FromRect(buttonOvalBorderRect);
buttonOvalNegativePath.AppendPath(buttonOvalPath);
buttonOvalNegativePath.UsesEvenOddFillRule = true;
context.SaveState();
{
var xOffset = buttonInnerShadowOffset.Width + (float)Math.Round(buttonOvalBorderRect.Width);
var yOffset = buttonInnerShadowOffset.Height;
context.SetShadow(
new CGSize(xOffset + (xOffset >= 0 ? 0.1f : -0.1f), yOffset + (yOffset >= 0 ? 0.1f : -0.1f)),
buttonInnerShadowBlurRadius,
buttonInnerShadow);
buttonOvalPath.AddClip();
var transform = CGAffineTransform.MakeTranslation(-(float)Math.Round(buttonOvalBorderRect.Width), 0);
buttonOvalNegativePath.ApplyTransform(transform);
UIColor.Gray.SetFill();
buttonOvalNegativePath.Fill();
}
context.RestoreState();
//// flareOval Drawing
var flareOvalPath = UIBezierPath.FromOval(new CGRect(22, 14, 29, 15));
context.SaveState();
flareOvalPath.AddClip();
context.DrawLinearGradient(buttonFlareGradient, new CGPoint(36.5f, 14), new CGPoint(36.5f, 29), 0);
context.RestoreState();
// ------------- END PAINTCODE -------------
}
}
}
public override void PrepareLayout()
{
base.PrepareLayout();
// Get the number of sections
var numberofSections = CollectionView.NumberOfSections();
if (numberofSections == 0)
{
return;
}
// Reset collections
_headersAttributes.Clear();
_footersAttributes.Clear();
_unionRects.Clear();
_columnHeights.Clear();
_allItemAttributes.Clear();
_sectionItemAttributes.Clear();
// Initialize column heights
for (int n = 0; n < ColumnCount; n++)
{
_columnHeights.Add((nfloat)0);
}
// Process all sections
nfloat top = 0.0f;
var attributes = new UICollectionViewLayoutAttributes();
var columnIndex = 0;
for (nint section = 0; section < numberofSections; ++section)
{
// Calculate section specific metrics
var minimumInterItemSpacing = (MinimumInterItemSpacingForSection == null) ? MinimumColumnSpacing :
MinimumInterItemSpacingForSection(CollectionView, this, section);
// Calculate widths
var width = CollectionView.Bounds.Width - SectionInset.Left - SectionInset.Right;
var itemWidth = (nfloat)Math.Floor((width - ((ColumnCount - 1) * MinimumColumnSpacing)) / ColumnCount);
// Calculate section header
var heightHeader = (HeightForHeader == null) ? HeaderHeight :
HeightForHeader(CollectionView, this, section);
if (heightHeader > 0)
{
attributes = UICollectionViewLayoutAttributes.CreateForSupplementaryView(UICollectionElementKindSection.Header, NSIndexPath.FromRowSection(0, section));
attributes.Frame = new CGRect(0, top, CollectionView.Bounds.Width, heightHeader);
_headersAttributes.Add(section, attributes);
_allItemAttributes.Add(attributes);
top = attributes.Frame.GetMaxY();
}
top += SectionInset.Top;
for (int n = 0; n < ColumnCount; n++)
{
_columnHeights [n] = top;
}
// Calculate Section Items
var itemCount = CollectionView.NumberOfItemsInSection(section);
List <UICollectionViewLayoutAttributes> itemAttributes = new List <UICollectionViewLayoutAttributes> ();
for (nint n = 0; n < itemCount; n++)
{
var indexPath = NSIndexPath.FromRowSection(n, section);
columnIndex = NextColumnIndexForItem(n);
var xOffset = SectionInset.Left + (itemWidth + MinimumColumnSpacing) * (nfloat)columnIndex;
var yOffset = _columnHeights [columnIndex];
var itemSize = (SizeForItem == null) ? new CGSize(0, 0) : SizeForItem(CollectionView, this, indexPath);
nfloat itemHeight = 0.0f;
if (itemSize.Height > 0.0f && itemSize.Width > 0.0f)
{
itemHeight = (nfloat)Math.Floor(itemSize.Height * itemWidth / itemSize.Width);
}
attributes = UICollectionViewLayoutAttributes.CreateForCell(indexPath);
attributes.Frame = new CGRect(xOffset, yOffset, itemWidth, itemHeight);
itemAttributes.Add(attributes);
_allItemAttributes.Add(attributes);
_columnHeights [columnIndex] = attributes.Frame.GetMaxY() + MinimumInterItemSpacing;
}
_sectionItemAttributes.Add(itemAttributes);
// Calculate Section Footer
nfloat footerHeight = 0.0f;
columnIndex = LongestColumnIndex();
top = _columnHeights [columnIndex] - MinimumInterItemSpacing + SectionInset.Bottom;
footerHeight = (HeightForFooter == null) ? FooterHeight : HeightForFooter(CollectionView, this, section);
if (footerHeight > 0)
{
attributes = UICollectionViewLayoutAttributes.CreateForSupplementaryView(UICollectionElementKindSection.Footer, NSIndexPath.FromRowSection(0, section));
attributes.Frame = new CGRect(0, top, CollectionView.Bounds.Width, footerHeight);
_footersAttributes.Add(section, attributes);
_allItemAttributes.Add(attributes);
top = attributes.Frame.GetMaxY();
}
for (int n = 0; n < ColumnCount; n++)
{
_columnHeights [n] = top;
}
}
var i = 0;
var attrs = _allItemAttributes.Count;
while (i < attrs)
{
var rect1 = _allItemAttributes [i].Frame;
i = (int)Math.Min(i + _unionSize, attrs) - 1;
var rect2 = _allItemAttributes [i].Frame;
_unionRects.Add(CGRect.Union(rect1, rect2));
i++;
}
}