/// <Docs>The Canvas to which the View is rendered.</Docs>
/// <summary>
/// Draw the specified canvas.
/// </summary>
/// <param name="canvas">Canvas.</param>
public override void Draw(Android.Graphics.Canvas canvas)
{
if (Element == null)
{
base.Draw(canvas);
return;
}
// Draws the background and default android setup. Children will also be redrawn here
// base.Draw(canvas);
// Set up clipping
if (Element.IsClippedToBounds)
{
canvas.ClipRect(new Android.Graphics.Rect(0, 0, Width, Height));
}
// Perform custom drawing from the NGraphics subsystems
var ncanvas = new CanvasCanvas(canvas);
var rect = new NGraphics.Rect(0, 0, Width, Height);
// Fill background
ncanvas.FillRectangle(rect, new NGraphics.Color(Element.BackgroundColor.R, Element.BackgroundColor.G, Element.BackgroundColor.B, Element.BackgroundColor.A));
// Custom drawing
Element.Draw(ncanvas, rect);
// Redraw children - since we might have a composite control containing both children
// and custom drawing code, we want children to be drawn last. The reason for this double-
// drawing is that the base.Draw(canvas) call will handle background which is needed before
// doing NGraphics drawing - but unfortunately it also draws children - which then will
// be drawn below NGraphics drawings.
base.Draw(canvas);
}
protected override void DispatchDraw(Android.Graphics.Canvas canvas)
{
base.DispatchDraw(canvas);
if (Header == null && Divider != null)
{
//Drawable.setbounds does not work on pre honeycomb, so you have to do a little work around
//for anything pre-HC.
if ((int)Build.VERSION.SdkInt < 11)
{
canvas.ClipRect(0, 0, Width, DividerHeight);
}
Divider.Draw(canvas);
}
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int saveCount = canvas.Save();
RectF arcBounds = mTempBounds;
arcBounds.Set(bounds);
mPaint.Color = new Color(mColor);
//calculate fish clip bounds
//clip the width of the fish need to increase mPathDottedLineSize * 1.2f
RectF fishRectF = new RectF(mFishHeadPos[0] - mFishWidth / 2.0f - mPathDottedLineSize * 1.2f, mFishHeadPos[1] - mFishHeight / 2.0f, mFishHeadPos[0] + mFishWidth / 2.0f + mPathDottedLineSize * 1.2f, mFishHeadPos[1] + mFishHeight / 2.0f);
Matrix matrix = new Matrix();
matrix.PostRotate(mFishRotateDegrees, fishRectF.CenterX(), fishRectF.CenterY());
matrix.MapRect(fishRectF);
//draw river
int riverSaveCount = canvas.Save();
mPaint.SetStyle(Paint.Style.Stroke);
canvas.ClipRect(fishRectF, Region.Op.Difference);
canvas.DrawPath(CreateRiverPath(arcBounds), mPaint);
canvas.RestoreToCount(riverSaveCount);
//draw fish
int fishSaveCount = canvas.Save();
mPaint.SetStyle(Paint.Style.Fill);
canvas.Rotate(mFishRotateDegrees, mFishHeadPos[0], mFishHeadPos[1]);
canvas.ClipPath(CreateFishEyePath(mFishHeadPos[0], mFishHeadPos[1] - mFishHeight * 0.06f), Region.Op.Difference);
canvas.DrawPath(CreateFishPath(mFishHeadPos[0], mFishHeadPos[1]), mPaint);
canvas.RestoreToCount(fishSaveCount);
canvas.RestoreToCount(saveCount);
}
