public void AddCustomControlBox(CustomRenderBox ctrlBox)
{
_controlPoints.Add(ctrlBox);
//important: don't forget to set parent link
//this will route update graphics msg from client to parent
CustomRenderBox.SetParentLink(ctrlBox, this);
}
protected override void RenderClientContent(DrawBoard d, UpdateArea updateArea)
{
//1. save canvas origin, (don't forget to restore this)
int enter_canvas_x = d.OriginX;
int enter_canvas_y = d.OriginY;
//d.FillRectangle(Color.FromArgb(100, Color.Yellow),
// _approxRectBounds.Left,
// _approxRectBounds.Top,
// _approxRectBounds.Width,
// _approxRectBounds.Height);
foreach (CustomRenderBox renderE in _controlPoints)
{
int x = renderE.X;
int y = renderE.Y;
//2. set canvas origin
d.SetCanvasOrigin(enter_canvas_x + x, enter_canvas_y + y);
//3. offset update area (see opposite direction)
updateArea.Offset(-x, -y);
//4.
RenderElement.Render(renderE, d, updateArea);
//5. restore only update area back
updateArea.Offset(x, y);
}
//restore enter canvas x, y
d.SetCanvasOrigin(enter_canvas_x, enter_canvas_y);
////lets draw lines that link control points
int j = _controlPoints.Count;
float strokeW = d.StrokeWidth;
Color strokeColor = d.StrokeColor;
d.StrokeWidth = 2;
d.StrokeColor = Color.Black;
for (int i = 1; i < j; ++i)
{
CustomRenderBox b_0 = _controlPoints[i - 1];
CustomRenderBox b_1 = _controlPoints[i];
d.DrawLine(b_0.X, b_0.Y, b_1.X, b_1.Y);
}
{
CustomRenderBox b_0 = _controlPoints[j - 1];
CustomRenderBox b_1 = _controlPoints[0];
d.DrawLine(b_0.X, b_0.Y, b_1.X, b_1.Y);
}
//and the last one
d.StrokeColor = strokeColor;
d.StrokeWidth = strokeW;
}
protected override void OnStartDemo(SampleViewport viewport)
{
var bgRenderBox = new CustomRenderBox(viewport.Root, 800, 600);
bgRenderBox.BackColor = Color.LightGray;
viewport.AddContent(bgRenderBox);
//---------------------------------------------------------------------
var miniAggg = new MyMiniAggCanvasRenderElement(viewport.Root, 400, 600);
var lionFill = new PixelFarm.Agg.LionFillSprite();
miniAggg.AddSprite(lionFill);
viewport.AddContent(miniAggg);
}
//--------------------------------------------------------------------------
void CreateVScrollbarContent(RootGraphic rootgfx)
{
CustomRenderBox bgBox = new CustomRenderBox(rootgfx, this.Width, this.Height);
bgBox.HasSpecificSize = true;
bgBox.SetController(this);
bgBox.SetLocation(this.Left, this.Top);
//MinButton
SetupMinButtonProperties(bgBox);
//MaxButton
SetupMaxButtonProperties(bgBox);
//ScrollButton
SetupVerticalScrollButtonProperties(bgBox);
//--------------
this.mainBox = bgBox;
}
//--------------------------------------------------------------------------
void CreateVScrollbarContent()
{
CustomRenderBox bgBox = new CustomRenderBox(this.Width, this.Height);
//bgBox.HasSpecificWidthAndHeight = true;
bgBox.SetController(this);
bgBox.SetLocation(this.Left, this.Top);
//MinButton
SetupMinButtonProperties(bgBox);
//MaxButton
SetupMaxButtonProperties(bgBox);
//ScrollButton
SetupVerticalScrollButtonProperties(bgBox);
//--------------
_mainBox = bgBox;
}
public void UpdateRectBounds()
{
//find max bounds of this control
var rectBoundsAcc = new RectBoundsAccum();
rectBoundsAcc.Init();
int j = _controlPoints.Count;
for (int i = 0; i < j; ++i)
{
CustomRenderBox p = _controlPoints[i];
rectBoundsAcc.Update(p.X, p.Y);
}
//
_approxRectBounds = rectBoundsAcc.ToRectF();
_approxRectBounds.Width += 10;
_approxRectBounds.Height += 10;
}
public override bool HasCustomHitTest => true; //set to true, CustomHitTest() will be called
protected override bool CustomHitTest(HitChain hitChain)
{
if (_approxRectBounds.Contains(hitChain.TestPoint))
{
//in rgn
//check hit test on each child
for (int i = _controlPoints.Count - 1; i >= 0; --i)
{
CustomRenderBox ctrlPoint = _controlPoints[i];
if (ctrlPoint.HitTestCore(hitChain))
{
hitChain.AddHitObject(ctrlPoint);
return(true);
}
}
}
return(false);
}
