public void changepage(int mpagenum)
{
if (this.pagenum != mpagenum)
{
this.pagenum = mpagenum;
if (this.pagenum >= this.strokes_page_all.Count)
{
var numadd = this.pagenum - this.strokes_page_all.Count + 1;
for (int i = 0; i < numadd; i++)
{
var pagetemp = new ZBBPage();
pagetemp.lines.Add(new ZBBPageStep());
strokes_page_all.Add(pagetemp);
}
}
var page = strokes_page_all[this.pagenum];
if (page != null)
{
if (page.lines.Last().lines_curr.Count > 0)
{
undoOrRedo += 1;
}
if (m_canvas.Strokes.Count > 0)
{
undoOrRedo += 1;
m_canvas.Strokes.Clear();
}
m_canvas.Strokes.Add(page.lines.Last().lines_curr);
}
}
}
public ZJBlackboardNew(InkCanvas canvas)
{
this.m_canvas = canvas;
var page = new ZBBPage();
page.lines.Add(new ZBBPageStep());
strokes_page_all.Add(page);
if (canvas != null)
{
canvas.EditingMode = InkCanvasEditingMode.Ink;
DrawingAttributes drawingAttributes = new DrawingAttributes();
canvas.DefaultDrawingAttributes = drawingAttributes;
drawingAttributes.Color = Colors.White;
drawingAttributes.FitToCurve = true;
drawingAttributes.IgnorePressure = false;
canvas.Strokes.StrokesChanged += Strokes_StrokesChanged;
canvas.StrokeCollected += Canvas_StrokeCollected;
canvas.StrokeErasing += Canvas_StrokeErasing;
canvas.StrokeErased += Canvas_StrokeErased;
canvas.MouseUp += Canvas_MouseUp;
}
}
