public NItem(NImage image, NColor color, NFill fill, NStroke stroke)
{
Image = image;
Color = color;
Fill = fill;
Stroke = stroke;
}
void OnCanvasPrePaint(NCanvasPaintEventArgs args)
{
NCanvas canvas = args.TargetNode as NCanvas;
if (canvas == null)
{
return;
}
NStroke stroke = (NStroke)canvas.Tag;
NPaintVisitor visitor = args.PaintVisitor;
visitor.SetStroke(stroke);
visitor.SetFill(null);
double strokeWidth = stroke.Width;
double rectWidth = 300;
double ellipseWidth = 150;
double polylineWidth = 180;
double dist = 20;
double x1 = 10 + strokeWidth / 2;
double x2 = x1 + rectWidth + dist + strokeWidth;
double x3 = x2 + ellipseWidth;
double x4 = x3 + dist + strokeWidth;
double x5 = x4 + polylineWidth + dist + strokeWidth / 2;
double y1 = 10 + strokeWidth / 2;
double y2 = y1 + strokeWidth + 10;
double y3 = y1 + 50;
// draw a horizontal line
visitor.PaintLine(x1, y1, x3, y1);
// draw a rectangle
visitor.PaintRectangle(x1, y2, rectWidth, 100);
// draw an ellipse
visitor.PaintEllipse(x2, y2, ellipseWidth, 100);
// draw a polyline
NPolyline polyLine = new NPolyline(4);
polyLine.Add(new NPoint(x4, y2 + 90));
polyLine.Add(new NPoint(x4 + 60, y2));
polyLine.Add(new NPoint(x4 + 120, y2 + 90));
polyLine.Add(new NPoint(x4 + 180, y2));
visitor.PaintPolyline(polyLine);
// draw text
string dashStyleName = stroke.DashStyle.ToString();
visitor.ClearStroke();
visitor.SetFont(m_LabelFont);
visitor.SetFill(m_LabelFill);
NPaintTextRectSettings settings = new NPaintTextRectSettings();
visitor.PaintString(new NRectangle(x5, y3, 200, 50), dashStyleName, ref settings);
}
void OnEditStrokeChanged(NEventArgs args)
{
NValueChangeEventArgs localValueChangeArgs = args as NValueChangeEventArgs;
if (localValueChangeArgs != null)
{
for (int i = 0; i < m_arrStrokes.Length; i++)
{
NStroke stroke = m_arrStrokes[i];
stroke.SetValue(localValueChangeArgs.Property, localValueChangeArgs.NewValue);
NCanvas canvas = m_CanvasStack[i] as NCanvas;
double strokeWidth = stroke.Width;
if (strokeWidth < 0)
{
strokeWidth = 0;
}
canvas.PreferredSize = GetCanvasPreferredSize(strokeWidth);
if (canvas != null)
{
canvas.InvalidateDisplay();
}
}
}
}
protected override NWidget CreateExampleContent()
{
m_PathAngle = 0;
m_PathPositionX = 200;
m_PathPositionY = 100;
m_Stroke = new NStroke(1, NColor.Red);
// create an image fill using an embedded image
m_ImageFill = new NImageFill(NResources.Image_Artistic_Plane_png);
// create a custom texture mapping and assign it to the image fill
m_MyTextureMapping = new MyTextureMapping();
m_MyTextureMapping.TextureAngle = 45;
m_MyTextureMapping.PinPoint = new NPoint(m_PathPositionX, m_PathPositionY);
m_ImageFill.TextureMapping = m_MyTextureMapping;
m_Canvas = new NCanvas();
m_Canvas.PreferredSize = new NSize(800, 600);
m_Canvas.BackgroundFill = new NColorFill(new NColor(220, 220, 200));
m_Canvas.HorizontalPlacement = ENHorizontalPlacement.Center;
m_Canvas.VerticalPlacement = ENVerticalPlacement.Center;
m_Canvas.PrePaint += new Function <NCanvasPaintEventArgs>(OnCanvasPrePaint);
NScrollContent scroll = new NScrollContent();
scroll.Content = m_Canvas;
scroll.NoScrollHAlign = ENNoScrollHAlign.Center;
scroll.NoScrollVAlign = ENNoScrollVAlign.Center;
return(scroll);
}
protected override NWidget CreateExampleContent()
{
double width = 1;
NColor color = NColor.Black;
m_arrStrokes = new NStroke[]
{
new NStroke(width, color, ENDashStyle.Solid),
new NStroke(width, color, ENDashStyle.Dot),
new NStroke(width, color, ENDashStyle.Dash),
new NStroke(width, color, ENDashStyle.DashDot),
new NStroke(width, color, ENDashStyle.DashDotDot),
new NStroke(width, color, new NDashPattern(2, 2, 2, 2, 0, 2))
};
m_EditStroke = new NStroke();
m_EditStroke.Width = width;
m_EditStroke.Color = color;
m_EditStroke.DashCap = ENLineCap.Square;
m_EditStroke.StartCap = ENLineCap.Square;
m_EditStroke.EndCap = ENLineCap.Square;
for (int i = 0; i < m_arrStrokes.Length; i++)
{
NStroke stroke = m_arrStrokes[i];
stroke.DashCap = m_EditStroke.DashCap;
stroke.StartCap = m_EditStroke.StartCap;
stroke.EndCap = m_EditStroke.EndCap;
}
m_LabelFont = new NFont(NFontDescriptor.DefaultSansFamilyName, 12, ENFontStyle.Bold);
m_LabelFill = new NColorFill(ENNamedColor.Black);
m_CanvasStack = new NStackPanel();
m_CanvasStack.FillMode = ENStackFillMode.None;
m_CanvasStack.FitMode = ENStackFitMode.None;
NSize preferredSize = GetCanvasPreferredSize(m_EditStroke.Width);
for (int i = 0; i < m_arrStrokes.Length; i++)
{
NCanvas canvas = new NCanvas();
canvas.PrePaint += new Function <NCanvasPaintEventArgs>(OnCanvasPrePaint);
canvas.PreferredSize = preferredSize;
canvas.Tag = m_arrStrokes[i];
canvas.BackgroundFill = new NColorFill(NColor.White);
m_CanvasStack.Add(canvas);
}
// The stack must be scrollable
NScrollContent scroll = new NScrollContent();
scroll.Content = m_CanvasStack;
return(scroll);
}
