internal static CGPath CreateClippingPath(RectangleF rect, float radius)
{
var path = new CGPath();
path.MoveToPoint(rect.GetMinX(), rect.GetMinY());
path.AddLineToPoint(rect.GetMinX(), rect.GetMaxY() - radius);
path.AddArcToPoint(rect.GetMinX(), rect.GetMaxY(), rect.GetMinX() + radius, rect.GetMaxY(), radius);
path.AddLineToPoint(rect.GetMaxX() - radius, rect.GetMaxY());
path.AddArcToPoint(rect.GetMaxX(), rect.GetMaxY(), rect.GetMaxX(), rect.GetMaxY() - radius, radius);
path.AddLineToPoint(rect.GetMaxX(), rect.GetMinY());
path.CloseSubpath();
return path;
}
public override void Draw (RectangleF rect)
{
using (var context = UIGraphics.GetCurrentContext ()) {
// get the scale from the context by getting the current transform matrix, then asking for
// its "a" component, which is one of the two scale components. We could also ask for "d".
// This assumes (safely) that the view is being scaled equally in both dimensions.
var scale = context.GetCTM ().xx;
CATiledLayer tiledLayer = (CATiledLayer)this.Layer;
var tileSize = tiledLayer.TileSize;
// Even at scales lower than 100%, we are drawing into a rect in the coordinate system of the full
// image. One tile at 50% covers the width (in original image coordinates) of two tiles at 100%.
// So at 50% we need to stretch our tiles to double the width and height; at 25% we need to stretch
// them to quadruple the width and height; and so on.
// (Note that this means that we are drawing very blurry images as the scale gets low. At 12.5%,
// our lowest scale, we are stretching about 6 small tiles to fill the entire original image area.
// But this is okay, because the big blurry image we're drawing here will be scaled way down before
// it is displayed.)
tileSize.Width /= scale;
tileSize.Height /= scale;
// calculate the rows and columns of tiles that intersect the rect we have been asked to draw
int firstCol = (int)Math.Floor (rect.GetMinX () / tileSize.Width);
int lastCol = (int)Math.Floor ((rect.GetMaxX () - 1) / tileSize.Width);
int firstRow = (int)Math.Floor (rect.GetMinY () / tileSize.Height);
int lastRow = (int)Math.Floor ((rect.GetMaxY () - 1) / tileSize.Height);
for (int row = firstRow; row <= lastRow; row++) {
for (int col = firstCol; col <= lastCol; col++) {
UIImage tile = TileForScale (scale, row, col);
var tileRect = new RectangleF (tileSize.Width * col, tileSize.Height * row, tileSize.Width, tileSize.Height);
// if the tile would stick outside of our bounds, we need to truncate it so as to avoid
// stretching out the partial tiles at the right and bottom edges
tileRect.Intersect (this.Bounds);
tile.Draw (tileRect);
}
}
}
}
void FillRoundedRect (RectangleF rect, CGContext context)
{
float radius = 10.0f;
context.BeginPath ();
context.SetGrayFillColor (0.0f, this.Opacity);
context.MoveTo (rect.GetMinX () + radius, rect.GetMinY ());
context.AddArc (rect.GetMaxX () - radius, rect.GetMinY () + radius, radius, (float)(3 * Math.PI / 2), 0f, false);
context.AddArc (rect.GetMaxX () - radius, rect.GetMaxY () - radius, radius, 0, (float)(Math.PI / 2), false);
context.AddArc (rect.GetMinX () + radius, rect.GetMaxY () - radius, radius, (float)(Math.PI / 2), (float)Math.PI, false);
context.AddArc (rect.GetMinX () + radius, rect.GetMinY () + radius, radius, (float)Math.PI, (float)(3 * Math.PI / 2), false);
context.ClosePath ();
context.FillPath ();
}
public CGPath GetCellBorderPath(RectangleF rect)
{
var cornerRadius = 10;
float minx = rect.GetMinX(), midx = rect.GetMidX(), maxx = rect.GetMaxX();
float miny = rect.GetMinY(), midy = rect.GetMidY(), maxy = rect.GetMaxY();
CGPath path = new CGPath();
var cellPosition = CellPosition;
if (cellPosition == CellPosition.Top)
{
minx = minx + 1;
miny = miny + 1;
maxx = maxx - 1;
path.MoveToPoint(minx, maxy);
path.AddArcToPoint(minx, miny, midx, miny, cornerRadius);
path.AddArcToPoint(maxx, miny, maxx, maxy, cornerRadius);
path.AddLineToPoint(maxx, maxy);
}
else if (cellPosition == CellPosition.Bottom)
{
minx = minx + 1;
maxx = maxx - 1;
maxy = maxy - 1;
path.MoveToPoint(minx, miny);
path.AddArcToPoint(minx, maxy, midx, maxy, cornerRadius);
path.AddArcToPoint(maxx, maxy, maxx, miny, cornerRadius);
path.AddLineToPoint(maxx, miny);
}
else if (cellPosition == CellPosition.Middle)
{
minx = minx + 1;
maxx = maxx - 1;
path.MoveToPoint(minx, miny);
path.AddLineToPoint(maxx, miny);
path.AddLineToPoint(maxx, maxy);
path.AddLineToPoint(minx, maxy);
}
else if (cellPosition == CellPosition.Single)
{
minx = minx + 1;
miny = miny + 1;
maxx = maxx - 1;
maxy = maxy - 1;
path.MoveToPoint(minx, midy);
path.AddArcToPoint(minx, miny, midx, miny, cornerRadius);
path.AddArcToPoint(maxx, miny, maxx, midy, cornerRadius);
path.AddArcToPoint(maxx, maxy, midx, maxy, cornerRadius);
path.AddArcToPoint(minx, maxy, minx, midy, cornerRadius);
}
path.CloseSubpath();
return path;
}
public void SSDrawRoundedRect(CGContext context, RectangleF rect, float cornerRadius)
{
var minx = rect.GetMinX();
var midx = rect.GetMidX();
var maxx = rect.GetMaxX();
var miny = rect.GetMinY();
var midy = rect.GetMidY();
var maxy = rect.GetMaxY();
context.MoveTo(minx, midy);
context.AddArcToPoint(minx, miny, midx, miny, cornerRadius);
context.AddArcToPoint(maxx, miny, maxx, midy, cornerRadius);
context.AddArcToPoint(maxx, maxy, midx, maxy, cornerRadius);
context.AddArcToPoint(minx, maxy, minx, midy, cornerRadius);
context.ClosePath();
context.FillPath();
}
public override void Draw(RectangleF a_rect)
{
// Set the back color to black
GL.ClearColor (0.0f, 0.0f, 0.0f, 1.0f);
// Clear all old bits
GL.Clear ((int)(All.ColorBufferBit));
GL.PushMatrix();
RectangleF bds;
if (_vertical)
{
GL.Scale (1f, -1f, 1f);
bds = new RectangleF (0f, -1f,
this.Bounds.Width * _scaleFactor,
this.Bounds.Height * _scaleFactor);
} else {
GL.Translate(0f, this.Bounds.Height * _scaleFactor, 0f);
GL.Rotate(-90f, 0f, 0f, 1f);
bds = new RectangleF (0f, 1f,
this.Bounds.Height * _scaleFactor,
this.Bounds.Width * _scaleFactor);
}
if (_numLights == 0)
{
int i;
float currentTop = 0f;
for (i=0; i<_colorThresholds.Length; i++)
{
LevelMeterColorThreshold thisThresh = _colorThresholds[i];
float val = Math.Min (thisThresh.maxValue, _level);
RectangleF rect = new RectangleF(
0,
(bds.Height) * currentTop,
bds.Width,
(bds.Height) * (val - currentTop)
);
float [] vertices = new float[] {
rect.GetMinX (), rect.GetMinY (),
rect.GetMaxX (), rect.GetMinY (),
rect.GetMinX (), rect.GetMaxY (),
rect.GetMaxX (), rect.GetMaxY ()
};
CGColor clr = thisThresh.color.CGColor;
if (clr.NumberOfComponents != 4)
goto bail;
float [] rgba;
rgba = clr.Components;
GL.Color4 (rgba[0], rgba[1], rgba[2], _maxIntensity);
GL.VertexPointer(2, All.Float, 0, vertices);
GL.EnableClientState (All.VertexArray);
GL.DrawArrays(All.TriangleStrip, 0, 4);
if (_level < thisThresh.maxValue)
break;
currentTop = val;
}
}
else
{
int light_i;
float lightMinVal = 0f;
float insetAmount, lightVSpace;
lightVSpace = bds.Height / (float)_numLights;
if (lightVSpace < 4f)
insetAmount = 0f;
else if (lightVSpace < 8f)
insetAmount = 0.5f;
else
insetAmount = 1f;
int peakLight = -1;
if (_peakLevel > 0f)
{
peakLight = (int)(_peakLevel * _numLights);
if (peakLight >= _numLights)
peakLight = (int)(_numLights - 1);
}
for (light_i=0; light_i<_numLights; light_i++)
{
float lightMaxVal = (float)(light_i + 1) / (float)_numLights;
float lightIntensity;
RectangleF lightRect;
UIColor lightColor;
if (light_i == peakLight)
{
lightIntensity = _maxIntensity;
}
else
{
lightIntensity = (_level - lightMinVal) / (lightMaxVal - lightMinVal);
lightIntensity = LevelMeter.LEVELMETER_CLAMP(0f, lightIntensity, _maxIntensity);
if ((!_variableLightIntensity) && (lightIntensity > 0f)) lightIntensity = _maxIntensity;
}
lightColor = _colorThresholds[0].color;
int color_i;
for (color_i=0; color_i<(_colorThresholds.Length-1); color_i++)
{
LevelMeterColorThreshold thisThresh = _colorThresholds[color_i];
LevelMeterColorThreshold nextThresh = _colorThresholds[color_i + 1];
if (thisThresh.maxValue <= lightMaxVal)
lightColor = nextThresh.color;
}
lightRect = new RectangleF(
0f,
bds.Y * (bds.Height * ((float)(light_i) / (float)_numLights)),
bds.Width,
bds.Height * (1f / (float)_numLights)
);
lightRect = lightRect.Inset (insetAmount, insetAmount);
float [] vertices = {
lightRect.GetMinX (), lightRect.GetMinY (),
lightRect.GetMaxX (), lightRect.GetMinY (),
lightRect.GetMinX (), lightRect.GetMaxY (),
lightRect.GetMaxX (), lightRect.GetMaxY ()
};
GL.VertexPointer(2, All.Float, 0, vertices);
GL.EnableClientState (All.VertexArray);
if (lightIntensity == 1f)
{
CGColor clr = lightColor.CGColor;
if (clr.NumberOfComponents != 4)
goto bail;
float [] rgba;
rgba = clr.Components;
GL.Color4 (rgba[0], rgba[1], rgba[2], 1f);
GL.DrawArrays(All.TriangleStrip, 0, 4);
} else if (lightIntensity > 0f) {
CGColor clr = lightColor.CGColor;
if (clr.NumberOfComponents != 4)
goto bail;
float [] rgba;
rgba = clr.Components;
GL.Color4(rgba[0], rgba[1], rgba[2], lightIntensity);
GL.DrawArrays(All.TriangleStrip, 0, 4);
}
lightMinVal = lightMaxVal;
}
}
bail:
GL.PopMatrix ();
GL.Flush ();
}
private RectangleF GetTitleFrame(out NSDictionary titleTextStyles, AppStoreWindow window)
{
var drawsAsMainWindow = window.DrawsAsMainWindow();
var titleTextShadow = drawsAsMainWindow ? window.TitleTextShadow : window.InactiveTitleTextShadow;
if (titleTextShadow == null)
{
titleTextShadow = new NSShadow
{
ShadowBlurRadius = 0f,
ShadowOffset = new SizeF(0f, -1.0f),
ShadowColor = NSColor.FromDeviceWhite(1.0f, 0.5f),
};
}
var titleTextColor = drawsAsMainWindow ? window.TitleTextColor : window.InactiveTitleTextColor;
if (titleTextColor == default(NSColor))
{
titleTextColor = AppStoreWindow.DefaultTitleTextColor(drawsAsMainWindow);
}
var titleFont = window.TitleFont ??
NSFont.TitleBarFontOfSize(NSFont.SystemFontSizeForControlSize(NSControlSize.Regular));
var titleParagraphStyle = (NSParagraphStyle)NSParagraphStyle.DefaultParagraphStyle.MutableCopy();//new NSParagraphStyle { LineBreakMode = NSLineBreakMode.TruncatingTail };
titleParagraphStyle.LineBreakMode = NSLineBreakMode.TruncatingTail;
titleTextStyles = NSDictionary.FromObjectsAndKeys(
new object[]
{
titleFont, titleTextColor,
titleTextShadow, titleParagraphStyle
},
new object[]
{
NSAttributedString.FontAttributeName, NSAttributedString.ForegroundColorAttributeName,
NSAttributedString.ShadowAttributeName, NSAttributedString.ParagraphStyleAttributeName
});
var titleSize = new NSAttributedString(window.Title, titleTextStyles).Size;
var titleTextRect = new RectangleF(0, 0, titleSize.Width, titleSize.Height);
var docIconButton = window.StandardWindowButton(NSWindowButton.DocumentIconButton);
var versionButton = window.StandardWindowButton(NSWindowButton.DocumentVersionsButton);
var closeButton = window.ButtonToLayout(NSWindowButton.CloseButton);
var minimizeButton = window.ButtonToLayout(NSWindowButton.MiniaturizeButton);
var zoomButton = window.ButtonToLayout(NSWindowButton.ZoomButton);
if (docIconButton != null)
{
var docIconButtonFrame = ConvertRectFromView(docIconButton.Frame, docIconButton.Superview);
titleTextRect.X = docIconButtonFrame.GetMaxX() + TITLE_DOCUMENT_BUTTON_OFFSET.Width;
titleTextRect.Y = docIconButtonFrame.GetMidY() - titleSize.Height / 2f +
TITLE_DOCUMENT_BUTTON_OFFSET.Height;
}
else if (versionButton != null)
{
var versionsButtonFrame = ConvertRectFromView(versionButton.Frame, versionButton.Superview);
titleTextRect.X = versionsButtonFrame.GetMinX() - titleSize.Width + TITLE_VERSIONS_BUTTON_OFFSET;
var document = ((NSWindowController)window.WindowController).Document;
if (document.HasUnautosavedChanges || document.IsDocumentEdited)
{
titleTextRect.X += TITLE_DOCUMENT_STATUS_X_OFFSET;
}
}
else if (closeButton != null || minimizeButton != null || zoomButton != null)
{
var closeMaxX = closeButton == null ? 0f : closeButton.Frame.GetMaxX();
var minimizeMaxX = minimizeButton == null ? 0f : minimizeButton.Frame.GetMaxX();
var zoomMaxX = zoomButton == null ? 0f : zoomButton.Frame.GetMaxX();
var adjustedX = Math.Max(Math.Max(closeMaxX, minimizeMaxX), zoomMaxX) + TITLE_MARGINS.Width;
var proposedX = Bounds.GetMidX() - titleSize.Width / 2f;
titleTextRect.X = Math.Max(proposedX, adjustedX);
}
else
{
titleTextRect.X = Bounds.GetMidX() - titleSize.Width / 2f;
}
var fullScreenButton = window.ButtonToLayout(NSWindowButton.FullScreenButton);
if (fullScreenButton != null)
{
var fullScreenX = fullScreenButton.Frame.X;
var maxTitleX = titleTextRect.GetMaxX();
if ((fullScreenX - TITLE_MARGINS.Width) < titleTextRect.GetMaxX())
{
titleTextRect.Width = titleTextRect.Size.Width - (maxTitleX - fullScreenX) - TITLE_MARGINS.Width;
}
}
titleTextRect.Y = Bounds.GetMaxY() - titleSize.Height - TITLE_MARGINS.Height;
return titleTextRect;
}
public void DetermineGeometry(SizeF size, RectangleF anchorRect, RectangleF displayArea, UIPopoverArrowDirection supportedDirections)
{
_Offset = PointF.Empty;
_BackgroundRect = RectangleF.Empty;
_ArrowRect = RectangleF.Empty;
PopoverArrowDirection = UIPopoverArrowDirection.Unknown;
var biggestSurface = 0.0f;
var currentMinMargin = 0.0f;
var upArrowImage = UIImage.FromBundle(this.Properties.UpArrowImage);
var downArrowImage = UIImage.FromBundle(this.Properties.DownArrowImage);
var leftArrowImage = UIImage.FromBundle(this.Properties.LeftArrowImage);
var rightArrowImage = UIImage.FromBundle(this.Properties.RightArrowImage);
foreach(var direction in (UIPopoverArrowDirection[])Enum.GetValues(typeof(UIPopoverArrowDirection))) {
if(supportedDirections.HasFlag(direction)) {
var bgRect = RectangleF.Empty;
var arrowRect = RectangleF.Empty;
var offset = PointF.Empty;
var xArrowOffset = 0.0f;
var yArrowOffset = 0.0f;
var anchorPoint = PointF.Empty;
switch(direction) {
case UIPopoverArrowDirection.Up: {
anchorPoint = new PointF(anchorRect.GetMidX(), anchorRect.GetMaxY());
xArrowOffset = size.Width / 2 - upArrowImage.Size.Width / 2;
yArrowOffset = Properties.TopBgMargin - upArrowImage.Size.Height;
offset = new PointF(anchorPoint.X - xArrowOffset - upArrowImage.Size.Width / 2, anchorPoint.Y - yArrowOffset);
bgRect = new RectangleF(0, 0, size.Width, size.Height);
if(offset.X < 0) {
xArrowOffset += offset.X;
offset.X = 0;
}
else if(offset.X + size.Width > displayArea.Size.Width) {
xArrowOffset += (offset.X + size.Width - displayArea.Size.Width);
offset.X = displayArea.Size.Width - size.Width;
}
xArrowOffset = Math.Max(xArrowOffset, Properties.LeftBgMargin + Properties.ArrowMargin);
xArrowOffset = Math.Min(xArrowOffset, size.Width - Properties.RightBgMargin - Properties.ArrowMargin - upArrowImage.Size.Width);
arrowRect = new RectangleF(xArrowOffset, yArrowOffset, upArrowImage.Size.Width, upArrowImage.Size.Height);
break;
}
case UIPopoverArrowDirection.Down: {
anchorPoint = new PointF(anchorRect.GetMidX(), anchorRect.GetMinY());
xArrowOffset = size.Width / 2 - downArrowImage.Size.Width / 2;
yArrowOffset = size.Height - Properties.BottomBgMargin;
offset = new PointF(anchorPoint.X - xArrowOffset - downArrowImage.Size.Width / 2,
anchorPoint.Y - yArrowOffset - downArrowImage.Size.Height);
bgRect = new RectangleF(0, 0, size.Width, size.Height);
if(offset.X < 0) {
xArrowOffset += offset.X;
offset.X = 0;
}
else if(offset.X + size.Width > displayArea.Size.Width) {
xArrowOffset += (offset.X + size.Width - displayArea.Size.Width);
offset.X = displayArea.Size.Width - size.Width;
}
//cap arrow offset;
xArrowOffset = Math.Max(xArrowOffset, Properties.LeftBgMargin + Properties.ArrowMargin);
xArrowOffset = Math.Min(xArrowOffset, size.Width - Properties.RightBgMargin - Properties.ArrowMargin - downArrowImage.Size.Width);
arrowRect = new RectangleF(xArrowOffset, yArrowOffset, downArrowImage.Size.Width, downArrowImage.Size.Height);
break;
}
case UIPopoverArrowDirection.Left: {
anchorPoint = new PointF(anchorRect.GetMaxX(), anchorRect.GetMidY());
xArrowOffset = Properties.LeftBgMargin - leftArrowImage.Size.Width;
yArrowOffset = size.Height / 2 - leftArrowImage.Size.Height / 2;
offset = new PointF(anchorPoint.X - xArrowOffset, anchorPoint.Y - yArrowOffset - leftArrowImage.Size.Height / 2);
bgRect = new RectangleF(0, 0, size.Width, size.Height);
if(offset.Y < 0) {
yArrowOffset += offset.Y;
offset.Y = 0;
}
else if(offset.Y + size.Height > displayArea.Size.Height) {
yArrowOffset += (offset.Y + size.Height) - displayArea.Size.Height;
offset.Y = displayArea.Size.Height - size.Height;
}
//cap arrow offset;
yArrowOffset = Math.Max(yArrowOffset, Properties.TopBgMargin + Properties.ArrowMargin);
yArrowOffset = Math.Min(yArrowOffset, size.Height - Properties.BottomBgMargin - Properties.ArrowMargin - leftArrowImage.Size.Height);
arrowRect = new RectangleF(xArrowOffset, yArrowOffset, leftArrowImage.Size.Width, leftArrowImage.Size.Height);
break;
}
case UIPopoverArrowDirection.Right: {
anchorPoint = new PointF(anchorRect.GetMinX(), anchorRect.GetMidY());
xArrowOffset = size.Width - Properties.RightBgMargin;
yArrowOffset = size.Height / 2 - rightArrowImage.Size.Width / 2;
offset = new PointF(anchorPoint.X - xArrowOffset - rightArrowImage.Size.Width, anchorPoint.Y - yArrowOffset - rightArrowImage.Size.Height / 2);
bgRect = new RectangleF(0, 0, size.Width, size.Height);
if(offset.Y < 0) {
yArrowOffset += offset.Y;
offset.Y = 0;
}
else if(offset.Y + size.Height > displayArea.Size.Height) {
yArrowOffset += (offset.Y + size.Height) - displayArea.Size.Height;
offset.Y = displayArea.Size.Height - size.Height;
}
//cap arrow offset;
yArrowOffset = Math.Max(yArrowOffset, Properties.TopBgMargin + Properties.ArrowMargin);
yArrowOffset = Math.Min(yArrowOffset, size.Height - Properties.BottomBgMargin - Properties.ArrowMargin - rightArrowImage.Size.Height);
arrowRect = new RectangleF(xArrowOffset, yArrowOffset, rightArrowImage.Size.Width, rightArrowImage.Size.Height);
break;
}
}
//end switch statement
// var bgFrame = bgRect.RectOffset(offset.X, offset.Y);
// var bgFrame = RectangleFExtensions.Offset(bgRect, offset.X, offset.Y);
var bgFrame = bgRect;
bgFrame.X += offset.X;
bgFrame.Y += offset.Y;
var minMarginLeft = bgFrame.GetMinX() - displayArea.GetMinX();
var minMarginRight = displayArea.GetMaxX() - bgFrame.GetMaxY();
var minMarginTop = bgFrame.GetMinY() - displayArea.GetMinY();
var minMarginBottom = displayArea.GetMaxY() - bgFrame.GetMaxY();
if(minMarginLeft < 0) {
// Popover is too wide and clipped on the left; decrease width
// and move it to the right
offset.X -= minMarginLeft;
bgRect.Size.Width += minMarginLeft;
minMarginLeft = 0;
if(direction == UIPopoverArrowDirection.Right) {
arrowRect.X = bgRect.GetMaxX() - Properties.RightBgMargin;
}
}
if(minMarginRight < 0) {
// Popover is too wide and clipped on the right; decrease width.
bgRect.Size.Width += minMarginRight;
minMarginRight = 0;
if(direction == UIPopoverArrowDirection.Left) {
arrowRect.X = bgRect.GetMinX() - leftArrowImage.Size.Width + Properties.LeftBgMargin;
}
}
if(minMarginTop < 0) {
// Popover is too high and clipped at the top; decrease height and move it down
offset.Y -= minMarginTop;
bgRect.Size.Height += minMarginTop;
minMarginTop = 0;
if(direction == UIPopoverArrowDirection.Down) {
arrowRect.Y = bgRect.GetMaxY() - Properties.BottomBgMargin;
}
}
if(minMarginBottom < 0) {
// Popover is too high and clipped at the bottom; decrease height.
bgRect.Size.Height += minMarginBottom;
minMarginBottom = 0;
if(direction == UIPopoverArrowDirection.Up) {
arrowRect.Y = bgRect.GetMinY() - upArrowImage.Size.Height + Properties.TopBgMargin;
}
}
bgFrame = bgRect.RectOffset(offset.X, offset.Y);
var minMargin = Math.Min(minMarginLeft, minMarginRight);
minMargin = Math.Min(minMargin, minMarginTop);
minMargin = Math.Min(minMargin, minMarginBottom);
// Calculate intersection and surface
var intersection = RectangleF.Intersect(displayArea, bgFrame);
var surface = intersection.Size.Width * intersection.Size.Height;
if(surface >= biggestSurface && minMargin >= currentMinMargin) {
biggestSurface = surface;
_Offset = offset;
_ArrowRect = arrowRect;
_BackgroundRect = bgRect;
PopoverArrowDirection = direction;
currentMinMargin = minMargin;
}
} // end if
} //end foreach
switch(PopoverArrowDirection) {
case UIPopoverArrowDirection.Up:
_ArrowImage = upArrowImage;
break;
case UIPopoverArrowDirection.Down:
_ArrowImage = downArrowImage;
break;
case UIPopoverArrowDirection.Left:
_ArrowImage = leftArrowImage;
break;
case UIPopoverArrowDirection.Right:
_ArrowImage = rightArrowImage;
break;
}
}