private Path CreateFishPath(float fishCenterX, float fishCenterY)
{
Path path = new Path();
float fishHeadX = fishCenterX;
float fishHeadY = fishCenterY - mFishHeight / 2.0f;
//the head of the fish
path.MoveTo(fishHeadX, fishHeadY);
//the left body of the fish
path.QuadTo(fishHeadX - mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.222f, fishHeadX - mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.444f);
path.LineTo(fishHeadX - mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.666f);
path.LineTo(fishHeadX - mFishWidth * 0.5f, fishHeadY + mFishHeight * 0.8f);
path.LineTo(fishHeadX - mFishWidth * 0.5f, fishHeadY + mFishHeight);
//the tail of the fish
path.LineTo(fishHeadX, fishHeadY + mFishHeight * 0.9f);
//the right body of the fish
path.LineTo(fishHeadX + mFishWidth * 0.5f, fishHeadY + mFishHeight);
path.LineTo(fishHeadX + mFishWidth * 0.5f, fishHeadY + mFishHeight * 0.8f);
path.LineTo(fishHeadX + mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.666f);
path.LineTo(fishHeadX + mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.444f);
path.QuadTo(fishHeadX + mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.222f, fishHeadX, fishHeadY);
path.Close();
return(path);
}
void UpdateShape()
{
if (_points != null && _points.Count > 1)
{
APath path = new APath();
path.SetFillType(_fillMode ? FillType.Winding : FillType.EvenOdd);
path.MoveTo(_density * (float)_points[0].X, _density * (float)_points[0].Y);
for (int index = 1; index < _points.Count; index++)
path.LineTo(_density * (float)_points[index].X, _density * (float)_points[index].Y);
path.Close();
UpdateShape(path);
}
}
public override Carto.Graphics.Bitmap OnDrawPopup(PopupDrawInfo popupDrawInfo)
{
PopupStyle style = popupDrawInfo.Popup.Style;
// Calculate scaled dimensions
float DPToPX = popupDrawInfo.DPToPX;
float PXTODP = 1 / DPToPX;
if (style.ScaleWithDPI)
{
DPToPX = 1;
}
else
{
PXTODP = 1;
}
float screenWidth = popupDrawInfo.ScreenBounds.GetWidth() * PXTODP;
float screenHeight = popupDrawInfo.ScreenBounds.GetHeight() * PXTODP;
// Update sizes based on scale (uses extension method, cf. Shared/Extensions
int fontSize = FontSize.Update(DPToPX);
int triangleWidth = TriangleSize.Update(DPToPX);
int triangleHeight = TriangleSize.Update(DPToPX);
int strokeWidth = StrokeWidth.Update(DPToPX);
int screenPadding = ScreenPadding.Update(DPToPX);
// Set font
var font = Android.Graphics.Typeface.Create("HelveticaNeue-Light", Android.Graphics.TypefaceStyle.Normal);
// Calculate the maximum popup size, adjust with dpi
int maxPopupWidth = (int)(Math.Min(screenWidth, screenHeight));
float halfStrokeWidth = strokeWidth * 0.5f;
int maxTextWidth = maxPopupWidth - (2 * screenPadding + strokeWidth);
// Measure text
TextPaint textPaint = new TextPaint {
Color = TextColor, TextSize = fontSize
};
textPaint.SetTypeface(font);
var textLayout = new StaticLayout(text, textPaint, maxTextWidth, Layout.Alignment.AlignNormal, 1, 0, false);
int textX = (int)Math.Min(textPaint.MeasureText(text), textLayout.Width);
int textY = textLayout.Height;
int popupWidth = textX + (2 * PopupPadding + strokeWidth + triangleWidth);
int popupHeight = textY + (2 * PopupPadding + strokeWidth);
var bitmap = Android.Graphics.Bitmap.CreateBitmap(popupWidth, popupHeight, Android.Graphics.Bitmap.Config.Argb8888);
var canvas = new Android.Graphics.Canvas(bitmap);
var trianglePath = new Android.Graphics.Path();
trianglePath.MoveTo(triangleWidth, 0);
trianglePath.LineTo(halfStrokeWidth, triangleHeight * 0.5f);
trianglePath.LineTo(triangleWidth, triangleHeight);
trianglePath.Close();
int triangleOffsetX = 0;
int triangleOffsetY = (popupHeight - triangleHeight) / 2;
// Create paint object
var paint = new Android.Graphics.Paint();
paint.AntiAlias = true;
paint.SetStyle(Android.Graphics.Paint.Style.Stroke);
paint.StrokeWidth = strokeWidth;
paint.Color = StrokeColor;
// Stroke background
var background = new Android.Graphics.RectF();
background.Left = triangleWidth;
background.Top = halfStrokeWidth;
background.Right = popupWidth - strokeWidth;
background.Bottom = popupHeight - strokeWidth;
canvas.DrawRect(background, paint);
// Stroke triangle
canvas.Save();
canvas.Translate(triangleOffsetX, triangleOffsetY);
canvas.DrawPath(trianglePath, paint);
canvas.Restore();
// Fill background
paint.SetStyle(Android.Graphics.Paint.Style.Fill);
paint.Color = BackgroundColor;
canvas.DrawRect(background, paint);
// Fill triangle
canvas.Save();
canvas.Translate(triangleOffsetX, triangleOffsetY);
canvas.DrawPath(trianglePath, paint);
canvas.Restore();
if (textLayout != null)
{
// Draw text
canvas.Save();
canvas.Translate(halfStrokeWidth + triangleWidth + PopupPadding, halfStrokeWidth + PopupPadding);
textLayout.Draw(canvas);
canvas.Restore();
}
return(BitmapUtils.CreateBitmapFromAndroidBitmap(bitmap));
}
public override Carto.Graphics.Bitmap OnDrawPopup(PopupDrawInfo popupDrawInfo)
{
PopupStyle style = popupDrawInfo.Popup.Style;
// Calculate scaled dimensions
float DPToPX = popupDrawInfo.DPToPX;
float PXTODP = 1 / DPToPX;
if (style.ScaleWithDPI)
{
DPToPX = 1;
}
else
{
PXTODP = 1;
}
float screenWidth = popupDrawInfo.ScreenBounds.GetWidth() * PXTODP;
float screenHeight = popupDrawInfo.ScreenBounds.GetHeight() * PXTODP;
// Update sizes based on scale (uses extension method, cf. Shared/Extensions
int fontSize = FontSize.Update(DPToPX);
int triangleWidth = TriangleSize.Update(DPToPX);
int triangleHeight = TriangleSize.Update(DPToPX);
int strokeWidth = StrokeWidth.Update(DPToPX);
int screenPadding = ScreenPadding.Update(DPToPX);
// Set font
var font = Android.Graphics.Typeface.Create("HelveticaNeue-Light", Android.Graphics.TypefaceStyle.Normal);
// Calculate the maximum popup size, adjust with dpi
int maxPopupWidth = (int)(Math.Min(screenWidth, screenHeight));
float halfStrokeWidth = strokeWidth * 0.5f;
int maxTextWidth = maxPopupWidth - (2 * screenPadding + strokeWidth);
// Measure text
TextPaint textPaint = new TextPaint { Color = TextColor, TextSize = fontSize };
textPaint.SetTypeface(font);
var textLayout = new StaticLayout(text, textPaint, maxTextWidth, Layout.Alignment.AlignNormal, 1, 0, false);
int textX = (int)Math.Min(textPaint.MeasureText(text), textLayout.Width);
int textY = textLayout.Height;
int popupWidth = textX + (2 * PopupPadding + strokeWidth + triangleWidth);
int popupHeight = textY + (2 * PopupPadding + strokeWidth);
var bitmap = Android.Graphics.Bitmap.CreateBitmap(popupWidth, popupHeight, Android.Graphics.Bitmap.Config.Argb8888);
var canvas = new Android.Graphics.Canvas(bitmap);
var trianglePath = new Android.Graphics.Path();
trianglePath.MoveTo(triangleWidth, 0);
trianglePath.LineTo(halfStrokeWidth, triangleHeight * 0.5f);
trianglePath.LineTo(triangleWidth, triangleHeight);
trianglePath.Close();
int triangleOffsetX = 0;
int triangleOffsetY = (popupHeight - triangleHeight) / 2;
// Create paint object
var paint = new Android.Graphics.Paint();
paint.AntiAlias = true;
paint.SetStyle(Android.Graphics.Paint.Style.Stroke);
paint.StrokeWidth = strokeWidth;
paint.Color = StrokeColor;
// Stroke background
var background = new Android.Graphics.RectF();
background.Left = triangleWidth;
background.Top = halfStrokeWidth;
background.Right = popupWidth - strokeWidth;
background.Bottom = popupHeight - strokeWidth;
canvas.DrawRect(background, paint);
// Stroke triangle
canvas.Save();
canvas.Translate(triangleOffsetX, triangleOffsetY);
canvas.DrawPath(trianglePath, paint);
canvas.Restore();
// Fill background
paint.SetStyle(Android.Graphics.Paint.Style.Fill);
paint.Color = BackgroundColor;
canvas.DrawRect(background, paint);
// Fill triangle
canvas.Save();
canvas.Translate(triangleOffsetX, triangleOffsetY);
canvas.DrawPath(trianglePath, paint);
canvas.Restore();
if (textLayout != null)
{
// Draw text
canvas.Save();
canvas.Translate(halfStrokeWidth + triangleWidth + PopupPadding, halfStrokeWidth + PopupPadding);
textLayout.Draw(canvas);
canvas.Restore();
}
return BitmapUtils.CreateBitmapFromAndroidBitmap(bitmap);
}
