/// <summary>
/// Draws the content of the control.
/// </summary>
/// <param name="canvas">The canvas to draw on.</param>
protected override void OnDraw(Canvas canvas)
{
base.OnDraw(canvas);
var actualModel = this.ActualModel;
if (actualModel == null)
{
return;
}
if (actualModel.Background.IsVisible())
{
canvas.DrawColor(actualModel.Background.ToColor());
}
else
{
// do nothing
}
lock (this.invalidateLock)
{
if (this.isModelInvalidated)
{
((IPlotModel)actualModel).Update(this.updateDataFlag);
this.updateDataFlag = false;
this.isModelInvalidated = false;
}
}
lock (this.renderingLock)
{
if (this.rc == null)
{
var displayMetrics = this.Context.Resources.DisplayMetrics;
// The factors for scaling to Android's DPI and SPI units.
// The density independent pixel is equivalent to one physical pixel
// on a 160 dpi screen (baseline density)
this.Scale = displayMetrics.Density;
this.rc = new CanvasRenderContext(Scale, displayMetrics.ScaledDensity);
}
this.rc.SetTarget(canvas);
((IPlotModel)actualModel)
.Render
(
this.rc
,
//2019-01-09
//new OxyRect(0, 0, 200, 200)
new OxyRect(0, 0, Width / Scale, Height / Scale)
//Width / Scale, Height / Scale
);
}
}
/// <summary>
/// Draws the content of the control.
/// </summary>
/// <param name="canvas">The canvas to draw on.</param>
protected override void OnDraw(Canvas canvas)
{
base.OnDraw(canvas);
var actualModel = this.ActualModel;
if (actualModel == null)
{
return;
}
if (!actualModel.Background.IsUndefined())
{
canvas.DrawColor(actualModel.Background.ToColor());
}
else
{
// Use white as default background color
canvas.DrawColor(Color.White);
}
lock (this.invalidateLock)
{
if (this.isModelInvalidated)
{
((IPlotModel)actualModel).Update(this.updateDataFlag);
this.updateDataFlag = false;
this.isModelInvalidated = false;
}
}
lock (this.renderingLock)
{
if (this.rc == null)
{
this.rc = new CanvasRenderContext(Scale);
}
this.rc.SetTarget(canvas);
using (var bounds = new Rect())
{
canvas.GetClipBounds(bounds);
var width = bounds.Right - bounds.Left;
var height = bounds.Bottom - bounds.Top;
((IPlotModel)actualModel).Render(this.rc, width / Scale, height / Scale);
}
}
}
/// <summary>
/// Draws the content of the control.
/// </summary>
/// <param name="canvas">The canvas to draw on.</param>
protected override void OnDraw(Canvas canvas)
{
base.OnDraw(canvas);
var actualModel = this.ActualModel;
if (actualModel == null)
{
return;
}
if (actualModel.Background.IsVisible())
{
canvas.DrawColor(actualModel.Background.ToColor());
}
else
{
// do nothing
}
lock (this.invalidateLock)
{
if (this.isModelInvalidated)
{
((IPlotModel)actualModel).Update(this.updateDataFlag);
this.updateDataFlag = false;
this.isModelInvalidated = false;
}
}
lock (this.renderingLock)
{
if (this.rc == null)
{
this.rc = new CanvasRenderContext(Scale);
}
this.rc.SetTarget(canvas);
((IPlotModel)actualModel).Render(this.rc, Width / Scale, Height / Scale);
}
}