public Size Measure(Size constraints)
{
if (Dimensions == Size.Empty)
{
return(Size.Empty);
}
constraints.Width = Math.Min(constraints.Width, int.MaxValue);
constraints.Height = Math.Min(constraints.Height, int.MaxValue);
Frame = new RectangleF(0, 0, 0, 0);
SizeToFit();
nfloat width = Frame.Width;
nfloat height = Frame.Height;
double scale = 1;
if (constraints.Width < width || stretch != UI.ContentStretch.None)
{
scale = constraints.Width / width;
}
if (constraints.Height < height || stretch != UI.ContentStretch.None)
{
scale = Math.Min(scale, constraints.Height / height);
}
return(new Size(width * scale, height * scale));
}
public void Paint(Graphics g)
{
if (Visibility != Visibility.Visible || BitmapData == null || BitmapData.GetBytes() == null)
{
return;
}
BitmapImage.ImageInfo imgInfo;
var image = BitmapData.CreateImage();
image.GetImageInfo(out imgInfo);
var bitmapSize = new Size(imgInfo.Width, imgInfo.Height);
var dest = new Rect
{
Left = (int)Location.X,
Top = (int)Location.Y,
Right = (int)(Location.X + Size.Width),
Bottom = (int)(Location.Y + Size.Height),
};
var source = new Rectangle(0, 0, (int)bitmapSize.Width, (int)bitmapSize.Height);
if (_stretch == ContentStretch.UniformToFill)
{
var ratio = Size.Width / Size.Height;
double width = source.Width;
double height = source.Height;
if (width / height < ratio)
{
height = width / ratio;
}
else
{
width = height * ratio;
}
var xdiff = (source.Width - width) / 2;
var ydiff = (source.Height - height) / 2;
source = new Rectangle((int)xdiff, (int)ydiff, (int)width, (int)height);
}
double scaleFactorX = 1 / imgInfo.Xdpi * 2540;
double scaleFactorY = 1 / imgInfo.Ydpi * 2540;
var rcScaled = new Rect
{
Left = (int)(source.X * scaleFactorX),
Top = (int)(source.Y * scaleFactorY),
Right = (int)((source.X + source.Width) * scaleFactorX),
Bottom = (int)((source.Y + source.Height) * scaleFactorY),
};
// Draw the image, with alpha channel if any
IntPtr hdcDest = g.GetHdc();
image.Draw(hdcDest, ref dest, ref rcScaled);
g.ReleaseHdc(hdcDest);
}
public void SetLocation(Point location, Size size)
{
Width = (int)size.Width;
Height = (int)size.Height;
_hasMeasured = size.Height > 0 && size.Width > 0;
FitText();
Location = location.ToPoint();
}
public virtual void SetBackground(string imagePath, ContentStretch stretch)
{
BackgroundHexCode = null;
Backer = new ImageControl {
Size = Size.ToSize(), Stretch = stretch,
};
Backer.Loaded += (o, ev) => Redraw();
Backer.FilePath = imagePath;
}
/// <summary>
/// Sets the location and size of the control within its parent grid.
/// This is called by the underlying grid layout system and should not be used in application logic.
/// </summary>
/// <param name="location">The X and Y coordinates of the upper left corner of the control.</param>
/// <param name="size">The width and height of the control.</param>
public void SetLocation(Point location, Size size)
{
var left = location.X;
var right = location.X + MeasuredWidth;
var top = location.Y;
var bottom = location.Y + MeasuredHeight;
Layout((int)left, (int)top, (int)right, (int)bottom);
}
/// <summary>
/// Sets the location and size of the control within its parent grid.
/// This is called by the underlying grid layout system and should not be used in application logic.
/// </summary>
/// <param name="location">The X and Y coordinates of the upper left corner of the control.</param>
/// <param name="size">The width and height of the control.</param>
public void SetLocation(Point location, Size size)
{
var left = location.X;
var top = location.Y;
var right = left + size.Width;
var bottom = top + size.Height;
Layout((int)left, (int)top, (int)right, (int)bottom);
}
public Size Measure(Size constraints)
{
if (constraints.Width > 0 && !double.IsInfinity(constraints.Width))
{
SetWidth((int)constraints.Width);
}
this.MeasureView(constraints);
return(new Size(constraints.Width, MeasuredHeight));
}
/// <summary>
/// Sets the location and size of the control within its parent grid.
/// This is called by the underlying grid layout system and should not be used in application logic.
/// </summary>
/// <param name="location">The X and Y coordinates of the upper left corner of the control.</param>
/// <param name="size">The width and height of the control.</param>
public void SetLocation(Point location, Size size)
{
Location = location;
Size = size;
var par = Parent as GridControl;
if (par != null)
{
par.Redraw();
}
}
public static Size MeasureView(this IElement view, Size constraints)
{
var nativeView = DroidFactory.GetNativeObject <View>(view, nameof(view));
if (nativeView == null)
{
return(new Size());
}
nativeView.Measure(View.MeasureSpec.MakeMeasureSpec(GetMeasureSpec(constraints.Width),
view.HorizontalAlignment == HorizontalAlignment.Stretch ? MeasureSpecMode.Exactly : MeasureSpecMode.AtMost),
View.MeasureSpec.MakeMeasureSpec(GetMeasureSpec(constraints.Height), MeasureSpecMode.Unspecified));
return(new Size(nativeView.MeasuredWidth, nativeView.MeasuredHeight));
}
public void FitText()
{
if (!_hasMeasured)
{
return;
}
const string ellipsisChars = "... ";
var constraints = Size.ToSize();
Size s = CoreDll.MeasureString(" " + _title + " ", Font.ToFont(), constraints, false, true) + _margins;
// control is large enough to display the whole text
if (s.Width <= Width)
{
return;
}
int len = 0;
int seg = _title.Length;
string fit = string.Empty;
// find the longest string that fits into the control boundaries using bisection method
while (seg > 1)
{
seg -= seg / 2;
int left = len + seg;
int right = _title.Length;
if (left > right)
{
continue;
}
// build and measure a candidate string with ellipsis
string tst = " " + _title.Substring(0, left).TrimEnd() + ellipsisChars;
s = CoreDll.MeasureString(tst, Font.ToFont(), constraints, false, true) + _margins;
// candidate string fits into control boundaries,
// try a longer string
// stop when seg <= 1
if (s.Width <= Width)
{
len += seg;
fit = tst;
}
}
base.Text = len == 0 ? ellipsisChars : fit;
}
public Size Measure(Size constraints)
{
var frame = Frame;
constraints.Width = Math.Min(constraints.Width, int.MaxValue);
constraints.Height = Math.Min(constraints.Height, int.MaxValue);
Frame = new CGRect(CGPoint.Empty, new CGSize((float)constraints.Width, (float)constraints.Height));
SizeToFit();
var size = new Size(Frame.Width, Frame.Height);
Frame = frame;
return(size);
}
public void SetLocation(Point location, Size size)
{
Frame = new RectangleF((float)location.X, (float)location.Y, (float)size.Width, (float)size.Height);
if (stretch == UI.ContentStretch.None)
{
if (Frame.Width < Dimensions.Width || Frame.Height < Dimensions.Height)
{
ContentMode = UIViewContentMode.ScaleAspectFit;
}
else
{
ContentMode = UIViewContentMode.Center;
}
}
}
/// <summary>
/// Sets the location and size of the control within its parent grid.
/// This is called by the underlying grid layout system and should not be used in application logic.
/// </summary>
/// <param name="location">The X and Y coordinates of the upper left corner of the control.</param>
/// <param name="size">The width and height of the control.</param>
public void SetLocation(Point location, Size size)
{
var left = location.X;
var right = location.X + size.Width;
var top = location.Y;
var bottom = location.Y + size.Height;
Layout((int)left, (int)top, (int)right, (int)bottom);
var widthSpec = MeasureSpec.MakeMeasureSpec((int)size.Width, MeasureSpecMode.Exactly);
var heightSpec = MeasureSpec.MakeMeasureSpec((int)size.Height, MeasureSpecMode.Exactly);
_button.Measure(widthSpec, heightSpec);
_button.Layout(-Padding, -Padding, (int)size.Width + Padding, (int)size.Height + Padding);
}
protected override void OnResize(EventArgs e)
{
var t = CompactFactory.MetricStopwatch.ElapsedTicks;
if (Parent == null || Width == _width)
{
return;
}
var minSize = new Size(MinWidth, MinHeight);
var maxSize = new Size(MaxWidth, MaxHeight);
var size = this.PerformLayout(minSize, maxSize);
if (Backer != null && Backer.Size != size)
{
Backer.Size = size;
if (CellBitmap != null)
{
var bit = CellBitmap;
Bitmaps.Remove(this);
bit.Dispose();
mem -= Width * Height * 4;
}
}
if (size.ToSize() == Size)
{
Debug.WriteLine(string.Format("Unnecessary resize at {0}", size));
return;
}
Debug.WriteLine(string.Format("Resize {0} -> {1}", Size.ToSize(), size));
if (Size.Height != (int)size.Height)
{
Size = size.ToSize();
if (Parent != null && Parent.Parent is SmoothListbox)
{
((SmoothListbox)Parent.Parent).LayoutItems(this);
}
}
else
{
Size = size.ToSize();
}
_width = Size.Width;
Debug.WriteLineIf(CompactFactory.MetricStopwatch.IsRunning, string.Format("[{1}] Grid resize took {0}ms", new TimeSpan(CompactFactory.MetricStopwatch.ElapsedTicks - t).TotalMilliseconds, CompactFactory.MetricStopwatch.ElapsedMilliseconds));
}
public Size Measure(Size constraints)
{
var originalSize = Dimensions;
if (constraints.Height < .001)
{
return(originalSize);
}
Size imageSize;
var ratio = originalSize.Width / originalSize.Height;
if (_stretch == ContentStretch.None)
{
double width = originalSize.Width, height = originalSize.Height;
if (constraints.Height > 0 && originalSize.Height > constraints.Height)
{
height = constraints.Height;
width = height * ratio;
}
if (constraints.Width > 0 && width > constraints.Width)
{
width = constraints.Width;
height = width / ratio;
}
imageSize = new Size(width, height);
}
else
{
imageSize = constraints;
}
if (imageSize.Height > int.MaxValue)
{
imageSize.Height = imageSize.Width / ratio;
}
if (imageSize.Width > int.MaxValue)
{
imageSize.Width = imageSize.Height * ratio;
}
return(imageSize);
}
public Size Measure(Size constraints)
{
var originalSize = Dimensions;
var ratio = originalSize.Width / originalSize.Height;
double width = Math.Min(originalSize.Width, constraints.Width);
double height = Math.Min(originalSize.Height, constraints.Height);
if (width / height < ratio)
{
height = width / ratio;
}
else
{
width = height * ratio;
}
return(new Size(width, height));
}
public Size Measure(Size constraints)
{
if (string.IsNullOrEmpty(Text))
{
return(Size.Empty);
}
constraints.Width = Math.Min(constraints.Width, int.MaxValue);
constraints.Height = Math.Min(constraints.Height, int.MaxValue);
var lineHeight = Lines > 0 ? base.Font.LineHeight * Lines : int.MaxValue;
var size = CGSize.Empty;
if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0))
{
size = MeasureString(Text, new CGSize((float)constraints.Width, lineHeight)).Size;
}
return(new Size((double)size.Width, Math.Min((double)size.Height, constraints.Height)));
}
/// <summary>
/// Handles the TextChanged event of the Label control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="TextChangedEventArgs"/> instance containing the event data.</param>
private void Label_TextChanged(object sender, TextChangedEventArgs e)
{
var old = StringValue;
var ellipsized = _text != base.Text && base.Text != null && base.Text.EndsWith(Ellipsis);
var infinitySize = new Size(double.PositiveInfinity, double.PositiveInfinity);
if (!ellipsized && StringValue != base.Text)
{
_constraints = infinitySize;
_text = base.Text;
StringValue = Text;
}
this.RequestResize();
if (old == StringValue)
{
return;
}
this.RaiseEvent("ValueChanged", new ValueChangedEventArgs <string>(old, StringValue));
this.OnPropertyChanged("Text");
this.OnPropertyChanged("StringValue");
}
public void SetLocation(Point location, Size size)
{
Frame = new CGRect((float)location.X, (float)location.Y, (float)size.Width, (float)size.Height);
}
/// <summary>
/// Measure the view and its content to determine the measured width and the measured height.
/// This method is invoked by <see cref="View.Measure"/> and should be overriden by subclasses to provide accurate and efficient measurement of their contents.
/// </summary>
/// <param name="widthMeasureSpec">Horizontal space requirements as imposed by the parent. The requirements are encoded with <see cref="View.MeasureSpec"/>.</param>
/// <param name="heightMeasureSpec">Vertical space requirements as imposed by the parent. The requirements are encoded with <see cref="View.MeasureSpec"/>.</param>
protected override void OnMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
int parentHeight;
int parentWidth;
View frame = null;
var fragmentId = ((Parent as BaseFragment)?.Stack as FragmentHistoryStack)?.FragmentId;
if (fragmentId != null)
{
frame = DroidFactory.MainActivity.FindViewById <FrameLayout>(fragmentId.Value);
}
else
{
frame = base.Parent as View;
}
if (frame != null)
{
parentWidth = frame.MeasuredWidth;
parentHeight = (int)(frame.MeasuredHeight / DroidFactory.DisplayScale);
}
else
{
var metrics = new DisplayMetrics();
DroidFactory.MainActivity.WindowManager.DefaultDisplay.GetMetrics(metrics);
parentWidth = (int)(metrics.WidthPixels * .6);
parentHeight = (int)(parentWidth * .75);
}
var basicGrid = !(this is GridCell) && !(this is Grid);
if (MinWidth < 1)
{
MinWidth = parentWidth;
}
if (MaxWidth < MinWidth)
{
MaxWidth = MinWidth;
}
if (basicGrid && MinHeight < 1 && parentHeight > 0)
{
MinHeight = parentHeight;
}
if (MaxHeight < 1 && parentHeight > 0)
{
MaxHeight = basicGrid ? parentHeight : double.PositiveInfinity;
}
var size = new Size(MeasuredWidth, MeasuredHeight);
if (MinWidth < 0 || MinHeight < 0 || MaxWidth < 0 || MaxHeight < 0)
{
SetMeasuredDimension(ResolveSize((int)size.Width, widthMeasureSpec), ResolveSize((int)size.Height, heightMeasureSpec));
return;
}
if (ResizeRequested ||
size.Width < MinWidth || size.Height < MinHeight * DroidFactory.DisplayScale ||
size.Width > MaxWidth || size.Height > MaxHeight * DroidFactory.DisplayScale)
{
var minSize = new Size(Math.Min(MaxWidth, MinWidth), Math.Min(MinHeight, MaxHeight));
var maxSize = new Size(Math.Max(MaxWidth, MinWidth), Math.Max(MinHeight, MaxHeight));
size = this.PerformLayout(minSize, maxSize);
ResizeRequested = false;
}
SetMeasuredDimension(ResolveSize((int)size.Width, widthMeasureSpec), ResolveSize((int)size.Height, heightMeasureSpec));
DroidFactory.ShowKeyboard(TextBase.CurrentFocus);
}
public void SetLocation(UI.Point location, Size size)
{
base.Width = (int)size.Width;
base.Height = (int)size.Height;
Location = location.ToPoint();
}
public Size Measure(Size constraints)
{
return(new Size(constraints.Width, Math.Min((int)constraints.Height, Height)));
}
public Size Measure(Size constraints)
{
if (string.IsNullOrEmpty(FilePath))
{
return(new Size());
}
var originalSize = Dimensions;
if (originalSize == new Size(1, 1))
{
return(originalSize);
}
if (constraints.Height < .001)
{
return(new Size(MeasuredWidth, MeasuredHeight));
}
Size imageSize;
var ratio = originalSize.Width / originalSize.Height;
if (_stretch != ContentStretch.Fill)
{
double width = originalSize.Width, height = originalSize.Height;
if (constraints.Height > 0 && originalSize.Height > constraints.Height)
{
height = constraints.Height;
width = height * ratio;
}
if (constraints.Width > 0 && width > constraints.Width)
{
width = constraints.Width;
height = width / ratio;
}
double scale;
switch (_stretch)
{
case ContentStretch.Uniform:
scale = Math.Min(constraints.Width / width, constraints.Height / height);
break;
case ContentStretch.UniformToFill:
scale = Math.Max(constraints.Width / width, constraints.Height / height);
break;
default:
scale = 1;
break;
}
imageSize = new Size(width * scale, height * scale);
}
else
{
imageSize = constraints;
}
if (imageSize.Height > int.MaxValue)
{
imageSize.Height = imageSize.Width / ratio;
}
if (imageSize.Width > int.MaxValue)
{
imageSize.Width = imageSize.Height * ratio;
}
this.MeasureView(imageSize);
return(imageSize);
}
public Size Measure(Size constraints)
{
return(this.MeasureView(constraints));
}
public static System.Drawing.Size ToSize(this Size size)
{
return(new System.Drawing.Size((int)size.Width, (int)size.Height));
}
Size IElement.Measure(Size constraints)
{
return(this.MeasureView(constraints));
}
/// <summary>
/// Calculates and returns an appropriate width and height value for the contents of the control.
/// This is called by the underlying grid layout system and should not be used in application logic.
/// </summary>
/// <param name="constraints">The size that the control is limited to.</param>
/// <returns>The label size, given a width constraint and a measured height.</returns>
public Size Measure(Size constraints)
{
if (string.IsNullOrEmpty(StringValue))
{
return(new Size());
}
if (_constraints == constraints)
{
return(new Size(MeasuredWidth, MeasuredHeight));
}
_constraints = constraints;
var height = _constraints.Height > int.MaxValue ? int.MaxValue : (int)Math.Ceiling(_constraints.Height);
var width = _constraints.Width > int.MaxValue ? int.MaxValue : (int)Math.Ceiling(_constraints.Width);
var measuredWidth = 0;
// Do not resize if the view does not have dimensions or there is no text
if (string.IsNullOrEmpty(StringValue) || height <= 0 || width <= 0 || TextSize <= 0)
{
if (Text != string.Empty)
{
SetText(string.Empty, BufferType.Normal);
}
_measuredLines = 0;
}
else
{
// modified: make a copy of the original TextPaint object for measuring
// (apparently the object gets modified while measuring, see also the
// docs for TextView.getPaint() (which states to access it read-only)
var paint = new TextPaint(Paint)
{
TextSize = TextSize,
};
// Measure using a static layout
var layout = new StaticLayout(StringValue, paint, width, Layout.Alignment.AlignNormal, 1.0f, 0, true);
float totalWidth = 0;
// If we had reached our minimum text size and still don't fit, append an ellipsis
if (layout.Height > height || _maxLineCount > 0 && layout.LineCount > _maxLineCount)
{
var ellipsisWidth = Paint.MeasureText(Ellipsis);
var addEllipsis = false;
int lastLineIndex;
if (height == int.MaxValue)
{
lastLineIndex = Math.Max(layout.LineCount - 1, 0);
}
else
{
lastLineIndex = Math.Max(layout.GetLineForVertical(height) - 1, 0);
if (lastLineIndex < layout.LineCount - 1)
{
addEllipsis = true;
}
}
if (_maxLineCount > 0 && lastLineIndex > _maxLineCount - 1)
{
lastLineIndex = _maxLineCount - 1;
addEllipsis = true;
}
_measuredLines = lastLineIndex + 1;
var ellipsizeIndex = layout.GetLineEnd(lastLineIndex);
var lastLineStartIndex = layout.GetLineStart(lastLineIndex);
ellipsizeIndex = lastLineStartIndex + (int)Math.Ceiling((ellipsizeIndex - lastLineStartIndex) * 1.4);
if (StringValue.Length < ellipsizeIndex)
{
ellipsizeIndex = StringValue.Length;
addEllipsis = false;
}
var text = StringValue.Substring(lastLineStartIndex, ellipsizeIndex - lastLineStartIndex).TrimEnd();
totalWidth = Paint.MeasureText(text) + (addEllipsis ? ellipsisWidth : 0);
// Trim characters off until we have enough room to draw the ellipsis
while (width < totalWidth && text != string.Empty)
{
addEllipsis = true;
text = StringValue.Substring(lastLineStartIndex, --ellipsizeIndex - lastLineStartIndex);
totalWidth = Paint.MeasureText(text) + ellipsisWidth;
}
if (addEllipsis)
{
text = StringValue.Substring(0, ellipsizeIndex).TrimEnd() + Ellipsis;
if (text != Text)
{
SetText(text, BufferType.Normal);
}
}
}
else if (base.Text != StringValue)
{
SetText(StringValue, BufferType.Normal);
_measuredLines = layout.LineCount;
}
else
{
_measuredLines = layout.LineCount;
}
// Some devices try to auto adjust line spacing, so force default line spacing
// and invalidate the layout as a side effect
SetLineSpacing(0, 1.0f);
for (var i = 0; i < _measuredLines; i++)
{
var lineWidth = layout.GetLineWidth(i);
if (lineWidth > totalWidth)
{
totalWidth = lineWidth;
}
}
measuredWidth = (int)Math.Ceiling(totalWidth);
}
var size = this.MeasureView(constraints);
return(new Size(measuredWidth, size.Height));
}
public Size Measure(Size constraints)
{
var measure = CoreDll.MeasureString(" " + _title + " ", Font.ToFont(), constraints, false, true) + _margins;
return(new Size(measure.Width, Math.Max(measure.Height, 33 * CompactFactory.Instance.DpiScale)));
}
protected override void OnPaint(PaintEventArgs e)
{
if (_forceLayout)
{
var minSize = new Size(MinWidth, MinHeight);
var maxSize = new Size(MaxWidth, MaxHeight);
var size = this.PerformLayout(minSize, maxSize).ToSize();
_forceLayout = false;
if (size != Size)
{
Size = size;
_width = size.Width;
return;
}
}
var backgroundView = Parent.Parent as SmoothListbox;
if (backgroundView == null || backgroundView.BackgroundBitmap == null)
{
if (InitializeBitmap())
{
using (var g = Graphics.FromImage(CellBitmap))
{
if (BackgroundHexCode != null)
{
g.Clear(new Color(BackgroundHexCode).ToColor());
}
else if (Backer != null)
{
Backer.Paint(g);
}
else
{
g.Clear(CompactFactory.Instance.Style.LayerItemBackgroundColor.ToColor());
}
Draw(g);
}
}
if (CellBitmap != null)
{
e.Graphics.DrawImage(CellBitmap, 0, 0);
}
}
else
{
//Transparent cells
var rect = new Rectangle(0, 0, Width, Height);
if (backgroundView.BackgroundBitmap != null)
{
var backgroundRect = new Rectangle(0, Top + backgroundView.Controls[0].Top, Width, Height);
e.Graphics.DrawImage(backgroundView.BackgroundBitmap, rect, backgroundRect, GraphicsUnit.Pixel);
}
if (InitializeBitmap())
{
_imageAttr = new ImageAttributes();
_imageAttr.SetColorKey(System.Drawing.Color.Transparent, System.Drawing.Color.Transparent);
using (var grp = Graphics.FromImage(CellBitmap))
{
grp.Clear(System.Drawing.Color.Transparent);
Draw(grp);
}
}
e.Graphics.DrawImage(CellBitmap, rect, 0, 0, Width, Height, GraphicsUnit.Pixel, _imageAttr);
}
}
/// <summary>
/// Calculates and returns an appropriate width and height value for the contents of the control.
/// This is called by the underlying grid layout system and should not be used in application logic.
/// </summary>
/// <param name="constraints">The size that the control is limited to.</param>
/// <returns>The label size, given a width constraint and a measured height.</returns>
public Size Measure(Size constraints)
{
return(this.PerformLayout(new Size(MeasuredWidth, MeasuredHeight / DroidFactory.DisplayScale), constraints));
}
